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A collaborative research initiative for the environmental management of ostrich production
Provedor de dados: 89
Autores: Rodrigues,GS; Buschinelli,CC de A; Rodrigues,IA; Medeiros,CB.
A collaborative research initiative was proposed by the Federation of Cooperatives of Ostrich Producers of Southeastern Brazil (FECOAVESTRUZ-Sudeste) and Embrapa Environment to training technicians and to develop environmental management procedures in order to establish criteria for the definition of 'Terms of Reference' for sustainable ostrich production for FECOAVESTRUZ associates. Eight farms with different scales of operation were selected by FECOAVESTRUZ-Sudeste for the application of 'integrated environmental indicator systems', designed to develop Environmental Management Reports and to propose best management practices in the farms. The results showed that, in general, indicators relative to Use of inputs and resources, Use of veterinary inputs and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: APOIA-NovoRural; Eco-cert.Rural; Environmental impact assessment; Ostrich; Scientific cooperation; Sustainability indicators.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400003

A hybrid model of uniform design and artificial neural network for the optimization of dietary metabolizable energy, digestible lysine, and methionine in quail chicks
Provedor de dados: 89
Autores: Mehri,M; Ghazaghi,M.
A uniform design (UD) was used to construct models to explain the growth response of Japanese quails to dietary metabolizable energy (ME), and digestible methionine (dMet) and lysine (dLys) under tropical condition. In total, 100 floor pens with seven birds each were fed 25 UD different diets containing 25 ME (2808-3092 kcal/kg), dMet (0.31-0.49% of diet), and dLys (0.91-1.39% of diet) levels from 7 to 14 d of age. A platform of artificial neural network based on UD (ANN-UD) was generated to describe the growth response of the birds to dietary inputs using random search. Artificial neural networks of body weight gain (BWG) and feed conversion ratio (FCR) were optimized using random search algorithm. The optimization the ANN-UD results showed that maximum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quail chick; Nutritional requirement; Uniform design; Neural network.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300013

A morphometric method of sexing white layer eggs
Provedor de dados: 89
Autores: Yilmaz-Dikmen,B; Dikmen,S.
The present study was carried out to determine the sex of the fertilized white layer eggs with using morphological measurements. A total of 300 Super Nick White Layer (54 wks of age) eggs were incubated and sexed in the end of incubation period. Before incubation egg length, width and weight were measured. The egg volume and shape index were estimated with using these measurements for each egg. The effect of egg weight and replicate number was not significant on the sex of the hatching chick (p &amp;gt; 0.05). The effects of egg shape index (p = 0.001), egg length (p = 0.0018), egg width (p &lt; 0.01) and volume (p = 0.004) of the egg had significant effect on the sex of hatching chick. According to the results of the current study, morphological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphometric measurements; Pre-incubation; Sexing; Layer.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300006

A Novel Polymorphism of VLDLR Signal Peptide Coding Region and Its Association with Growth and Abdominal Fat Traits of Gaoyou Domestic Ducks
Provedor de dados: 89
Autores: Ming-liang,C; Cong,W; Xuan,D; Lu,L; Tang-jie,Z.
ABSTRACT The VLDLR gene plays important roles in the growth and adiposity in humans and mice. The purpose of this study was to investigate the relationship between VLDLR gene genetic polymorphisms and growth and abdominal fat traits of the Gaoyou domestic duck. A total of 267 Gaoyou ducks were employed for testing. A 18bp deletion was identified in VLDLR signal peptide coding region. The results of c2 test suggested that the genotype frequencies of VLDLR signal peptide coding region were not in Hardy-Weinberg equilibrium. Least squares analysis showed that body weight (BW) of -18bp/-18bp genotype ducks was significantly higher than those of other genotypes from six (BW6) (p&lt;0.05) to ten weeks of age (BW10) (p&lt;0.01). The association analysis was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polymorphism; VLDLR; Abdominal fat trait; Growth; Duck.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400577

A Review of Approaches Targeting the Replacement of Coccidiostat Application in Poultry Production
Provedor de dados: 89
Autores: Barbour,EK; Ayyash,DB; Iyer,A; Harakeh,S; Kumosani,T.
ABSTRACT The classical and the most commonly used approach for the prevention of coccidiosis in chickens is the incorporation of synthetic coccidiostats into their feed during the first weeks of their life. This approach has been challenged by consumers, objecting against residual antimicrobials and drug resistant microorganisms that may contaminate poultry products. Moreover, the coccidiostat application approach has been challenged in the last decade by the emerging regulations in the developed world, targeting the cessation of such a practice. The pressures from the consumers as well as from regulation agencies resulted in a great need for alternative methods to reduce, or completely replace the use of coccidiostats in modern chicken production. This...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coccidiostat replacement; New approaches.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400405

Ação Isolada ou Combinada de Ácidos Orgânicos e Promotor de Crescimento em Rações de Frangos de Corte
Provedor de dados: 89
Autores: Garcia,RG; Ariki,J; Moraes,VMB; Kronka,SN; Borges,SA; Murata,LS; Campos,VA.
O experimento teve como objetivo verificar a ação da apramicina (10 ppm) e dos ácidos fórmico + propiônico (0,0; 0,1 e 0,2%) no desempenho de frangos de corte sexados. A mistura dos ácidos orgânicos foi de 1:1. O delineamento foi inteiramente casualizado, em esquema fatorial 2 x 3 x 2 (apramicina x ácidos orgânicos x sexos), com 4 repetições de 45 aves por parcela, totalizando 2.160 pintos Cobb de 1 dia. As aves receberam ração à vontade. Na fase inicial, a adição da apramicina (10 ppm) e 0,1% dos ácidos orgânicos, isoladamente, melhorou o ganho de peso das aves. A adição conjunta dos produtos não promoveu ganho acumulado. Na presença da apramicina, a adição dos ácidos orgânicos piorou a conversão alimentar. Nas fases final e total, os dados de desempenho...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácido propiônico; Ácido fórmico; Apramicina; Frangos de corte; Promotor de crescimento.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200004

Accuracy of Nonlinear Formulation of Broiler Diets: Maximizing Profits
Provedor de dados: 89
Autores: Gonçalves,CA; de Almeida,MA; Faria-Júnior,MJA; Pinto,MF; Garcia-Neto,M.
Nutritionists need to make commercial decisions about the optimal nutrient content broiler feeds. In order to demonstrate that broiler prices may influence dietary nutrient density, this study developed quadratic feed intake and weight gain equations, according to broiler sex and feeding phase, to be applied in a nonlinear feed formulation model. Four hundred and eighty Cobb broilers were allotted to a completely randomized experimental with six treatments, each with four replicates of 10 birds each, from 1 to 56 days old. Treatments consisted of diets containing 2800, 2900, 3000, 3100, 3200, or 3300 kcal metabolizable energy (ME)/kg and constant nutrient to ME ratio. A nonlinear version of the PPFR feed formulation software (http://www.fmva.unesp.br/ppfr)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy; Excel; Mathematical modeling; Nutrition; Response surface.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200173

Action of Antimicrobial Copper on Bacteria and Fungi Isolated from Commercial Poultry Hatcheries
Provedor de dados: 89
Autores: Depner,RFR; Pontin,KP; Depner,RA; Flores Neto,A; Lucca,V; Lovato,M.
ABSTRACT Since 2008, when the US Environmental Protection Agency (EPA) registered copper and its alloys as an antimicrobial agent for contact surfaces, research has demonstrated their antimicrobial activity. The aim of this study was to evaluate the efficacy of antimicrobial copper against bacteria and fungi isolated from commercial poultry hatcheries in order to develop a microbiological control alternative in these environments. Samples were collected from the surfaces of hatcher baskets from two hatcheries. Mesophilic microorganisms and fungi/yeasts were isolated and standardized in concentration of 105 cells/mL. Four copper plates and four stainless steel plates were completely immersed for one minute in bacteria and fungi/yeasts solutions and left to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial copper; Hatchery; Stainless steel; Copper surfaces.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600095

Activities and Ergonomics of Workers in Broiler Hatcheries
Provedor de dados: 89
Autores: Carvalho,CCS; Souza,C de F; Tinôco,I de FF; Santos,LV; Minette,LJ; Silva,EP da.
The objective this study was to assess ergonomic factors, posture and biomechanics of workers of a broiler egg hatchery. The analysis of ergonomic factors was based on physical work load, thermal environment, and exposure to light and noise. The posture of workers was analyzed using photographic records which were evaluated by the software program OWAS (Ovako Working Posture Analysing System). A biomechanics analysis was also performed based on the photographs taken of the employee at various angles, which were used as inputs to the Michigan two-dimensional biomechanical model software program. The results show that certain activities can be considered unhealthy due to the exposure of employees to physical and thermal overload. The continuous noise levels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicken production; Ergonomics; Egg hatching; Workplace safety.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200123

ACTIVITY OF SOME BRAZILIAN ISOLATES OF ENTOMOPATHOGENIC FUNGI AGAINST THE POULTRY RED MITE DERMANYSSUS GALLINAE DE GEER (ACARI: DERMANYSSIDAE)
Provedor de dados: 89
Autores: Kasburg,CR; Alves,LFA; Oliveira,DGP; Rohde,C.
ABSTRACT Poultry red mite Dermanyssus gallinae is a cosmopolitan and hematophagous species commonly found in layer houses around the world. Poultry mite infestations may cause anemia, stress, low body weight and egg production, and mortality. Mite control is typically based on chemical products, but they are not effective and leave residues in eggs; therefore, alternative control methods, such as entomopathogenic fungi, need to researched. This study aimed at evaluating, in the laboratory, the activity of Brazilian isolates of entomopathogenic fungi against D. gallinae. The mites were collected from a commercial layer house and were sprayed with conidial suspensions (1 × 108 conidia/mL) of five isolates of Beauveria bassiana and Metarhizium anisopliae. All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hematophagous mites; Microbial control; Ectoparasites; Laying hens.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300457

Adaptação de linhagens de galinhas para corte ao sistema de criação semi-intensivo
Provedor de dados: 89
Autores: Silva,MAN; Hellmeister Filho,P; Rosário,MF; Martins,E; Coelho,AAD; Savino,VJM; Silva,IJO; Menten,JFM.
Aves de quatro linhagens de galinhas para corte foram criadas no sistema semi-intensivo, em 16 boxes, sendo 4 boxes por linhagens, com 4,5 m² de área interna (abrigo) e 35 m² de área de pastejo, com o objetivo de analisar a adaptação dessas linhagens a esse sistema de criação, através de parâmetros ambientais e comportamentais. O período experimental desenvolveu-se entre 35 e 75 dias de idade, durante o qual foram coletados dados relativos à quantidade de aves presentes no pasto, temperatura e umidade relativa nos boxes e no pasto e porcentagem de sombra no pasto. Os parâmetros ambientais monitorados influenciaram o comportamento das aves. A análise bioclimática e a observação do comportamento permitiram diferenciar as linhagens estudadas no que diz...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptação; Bem-estar; Comportamento; Sistema semi-intensivo.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300006

Adding value to the meat of spent laying hens manufacturing sausages with a healthy appeal
Provedor de dados: 89
Autores: Souza,KMR de; Araujo,RB; Santos,AL dos; Rodrigues,CEC; Faria,DE de; Trindade,MA.
The aim of this study was to evaluate the viability of the use of spent laying hens' meat in the manufacturing of mortadella-type sausages with healthy appeal by using vegetable oil instead of animal fat. 120 Hy-line® layer hens were distributed in a completely randomized design into two treatments of six replicates with ten birds each. The treatments were birds from light Hy-line® W36 and semi-heavy Hy-line® Brown lines. Cold carcass, wing, breast and leg fillets yields were determined. Dry matter, protein, and lipid contents were determined in breast and leg fillets. The breast and legg fillets of three replicates per treatment were used to manufacture mortadella. After processing, sausages were evaluated for proximal composition, objective color,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Color; Microbiology testing; Sensory evaluation; Soybean oil; Spent layers.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100009

Addition of Amylase from Aspergillus Awamori to the Diet of Broiler Chickens
Provedor de dados: 89
Autores: Morgado,HS; Cysneiros,CSS; Sousa,CM; Stringhini,JH; Ulhoa,CJ; Silva,AS; Fabino Neto,R; Freitas,PVDX; Oliveira,HP; Batista,LHC.
ABSTRACT Two experiments were performed to evaluate the hematological and blood biochemistry parameters, biometry of digestive organs, enzyme activities, protein content and absolute weight of the pancreas of broilers fed pre-starter and pre-starter diets supplemented or not with amylase from Aspergillus awamori. In total, 120 male Cobb chicks were housed in heated cages in each experiment. A completely randomized experimental design, with two treatments (feed with and without amylase) and six replicates per treatment of 10 birds each was applied. The data were subjected to analysis of variance using the F-test at 5% probability level. The dietary amylase addition did not affect hematological and blood biochemistry parameters and the biometry of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood; Chickens; Fungi; Nutrition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400725

Advances and Perspectives of the use of the entomopathogenic fungi beauveria bassiana and metarhizium anisopliae for the control of arthropod pests in poultry production
Provedor de dados: 89
Autores: Oliveira,DGP; Alves,LFA; Sosa-Gómez,DR.
Global poultry production is plagued by a wide variety of arthropods. The problems associated with their chemical control have led to an increasing search for control alternatives, and entomopathogenic fungi seem to be a promising strategy. Despite the large number of insects and mites considered as important pests in animal production, studies on the use of entomopathogenic fungi for their control are still scarce compared with agricultural pests, particularly in Brazil. This article reviews some damages and control aspects of the main arthropod pests that affect Brazilian poultry production, including house flies, lesser mealworms, and feather mites, by the use of the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae. Studies published...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal production; Microbial control Musca domestica Alphitobius diaperinus Dermanyssus gallinae.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100001

Aggressive behavior in the genus Gallus sp
Provedor de dados: 89
Autores: Queiroz,SA; Cromberg,VU.
The intensification of the production system in the poultry industry and the vertical integration of the poultry agribusiness have brought profound changes in the physical and social environment of domestic fowls in comparison to their ancestors and have modified the expression of aggression and submission. The present review has covered the studies focusing on the different aspects linked to aggressiveness in the genus Gallus. The evaluated studies have shown that aggressiveness and subordination are complex behavioral expressions that involve genetic differences between breeds, strains and individuals, and differences in the cerebral development during growth, in the hormonal metabolism, in the rearing conditions of individuals, including feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggressiveness; Behavior; Fighting birds; Gallus sp.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100001

Albumen foam stability and s-ovalbumin contents in eggs coated with whey protein concentrate
Provedor de dados: 89
Autores: Alleoni,ACC; Antunes,AJ.
Food products such as breads, cakes, crackers, meringues, ice creams and several bakery items depend on air incorporation to maintain their texture and structure during or after processing. Proteins are utilized in the food industry since they improve texture attributes through their ability to encapsulate and retain air. The objectives of this work were to quantify s-ovalbumin contents in albumen and to determine alterations in egg white foam stability in fresh eggs, and in eggs coated and non-coated with a whey protein-based concentrate film (WPC), stored at 25°C for 28 days. The volume of drained liquid was higher in non-coated eggs than in coated eggs stored at 25°C at all storage periods. The difference on the third day of storage was in the order of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albumen foam; Albumen proteins; S-ovalbumin; Protein coating.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200006

Alimentação de Codornas com Milho Moído e Ração de Postura no Período Pós-jejum Durante a Muda Forçada e Seus Efeitos Sobre o Desempenho
Provedor de dados: 89
Autores: Garcia,EA; Mendes,AA; Pizzolante,CC; Veiga,N; Mattos,TK.
O experimento foi realizado com o objetivo de avaliar o desempenho de codornas poedeiras alimentadas por diferentes períodos com milho moído ou ração de postura durante sete dias após três dias de jejum, método de muda utilizado. Após esse período, as aves foram alimentadas com ração de postura durante as 20 semanas do período experimental. Utilizou-se um delineamento inteiramente ao acaso com três tratamentos (ração de postura por sete dias, ração de postura por três dias e milho moído por quatro dias e milho moído por sete dias), e quatro repetições de 24 aves por parcela. Os resultados mostraram que aves alimentadas apenas com ração de postura nos sete primeiros dias após o jejum apresentaram maior produção de ovos nas seis primeiras semanas do período...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Codornas; Muda forçada; Produção de ovos.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200004

Alterações Morfólogicas de Codornas Poedeiras Submetidas a Muda Forçada
Provedor de dados: 89
Autores: Garcia,EA; Mendes,AA; Pizzolante,CC; Veiga,N.
Objetivou-se avaliar as alterações físicas, produção de ovos e mortalidade de codornas poedeiras submetidas a muda forçada, durante um período de jejum. Utilizou-se um delineamento inteiramente ao acaso, com quatro tratamentos (0, 1, 2, e 3) dias de jejum, com três repetições de 36 aves por parcela. No início e ao final do período de jejum 2 aves por parcela foram abatidas, pesadas individualmente e sacrificadas para retirada e avaliação do ovário, oviduto, e fígado. Os resultados mostraram que no período de jejum de três dias houve uma redução de 25,64% no peso vivo, a produção de ovos caiu a 2,81% e a mortalidade foi de 4,60%.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Codornas; Jejum; Muda forçada; Produção de ovos.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300009

Alterações Morfológicas e Desempenho de Cordornas Poedeiras Tratadas com Diferentes Programas de Alimentação no Período de Repouso, da Muda Forçada
Provedor de dados: 89
Autores: Garcia,ES; Mendes,AA; Pizzolante,CC; Veiga,N.
O experimento objetivou avaliar as alterações físicas, produção de ovos e mortalidade de codornas poedeiras alimentadas por diferentes períodos com milho moído após muda forçada. Utilizou-se um delineamento inteiramente ao acaso, com três tratamentos (0, 4 e 7) dias de alimentação com milho moído e quatro repetições de 30 aves por parcela para análise do peso vivo e mortalidade e duas aves por parcela para análise das características físicas. Os resultados mostraram involução do aparelho reprodutivo até o quarto dia após muda forçada. Após sete dias, as aves alimentadas com ração de produção atingiram o peso que possuíam antes da muda forçada, e aos onze dias, as aves alimentadas com milho moído por sete dias não haviam ainda recuperado o peso de aparelho...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Codornas; Muda forçada; Produção de ovos; Programa de alimentação.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300010

Alternative calcium source effects on commercial egg production and quality
Provedor de dados: 89
Autores: Pelícia,K; Garcia,EA; Scherer,MRS; Móri,C; Dalanezi,JA; Faitarone,ABG; Molino,AB; Berto,DA.
This study aimed at verifying the possibility of replacing calcitic limestone by marine calcium in the diet of layers. A total number of 321 Hi-sex hens, with 40 weeks of age at the beginning of the experiment, was used. A completely randomized experimental design was applied, with 5 treatments (0, 15, 30, 45, and 60 % of calcitic limestone replacement by marine calcium source) and eight replicates of eight birds each. Treatments significantly affected specific gravity (p&lt;0.05), with the inclusion of 60% marine calcium (T5) presenting the worst result as compared to T1, which included only calcitic limestone as calcium source. It was concluded that marine calcium can replace up to 45% of calcitic limestone with no effects on performance or egg quality.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative calcium source; Eggshell quality; Limestone replacement; Marine algae; Marine calcium.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200005

Alternative Transcription of Peroxisome Proliferator-Activated Receptor Gamma in the Liver Is Associated with Fatness of Chickens
Provedor de dados: 89
Autores: Parada,R; Malewski,T; Jaszczak,K; Kawka,M.
ABSTRACT The expression of four transcription variant of peroxisome proliferator-activated receptor gamma gene (PPARG) (XM_015292931.1; XM_015292932.1; XM_015292933.1 and NM_001001460.1) in the liver of broilers was measured and its correlation with abdominal fat weight and relative abdominal fat content was investigated. The study was conducted with 92 slow-growing crossbred chickens (Cobb males x indigenous Green-legged Partridge female chickens) divided into “fat” and “lean” groups, according to their abdominal fat yield. The NM_001001460.1 transcriptwas upregulated with ratio of means 4.26 (p≤0.01) in the “fat” group in relation to the “lean” group. Expression of this transcript was highly correlated with relative abdominal fat content (0.71, p≤0.01)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fat deposition; PPARG; Transcription factor; SNP; Slow-growing chickens.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300447

Amino acid content of soybean samples collected in different Brazilian states: harvest 2003/2004
Provedor de dados: 89
Autores: Goldflus,F; Ceccantini,M; Santos,W.
Soybean is the most important protein source in animal nutrition and is widely used in poultry diets. Several factors influence the concentration of amino acids present in soybean grains cultivated in Brazil, such as climatic changes, genetics, topography, and soil fertility. Many technologies of soybean processing are used in order to eliminate or inactivate both heat-labile and heat-stable anti-nutritional factors. During processing, soybean by-products with different nutritional values are also produced. Processing conditions may as well affect the coefficients of digestibility of nutrients that are present in soybean protein sources. Furthermore, positive and negative effects of the environment may be masked by changes in processing conditions. This...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; NIRS; Poultry nutrition; Soybean; States of Brazil.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200006

Amino Acid Digestibility of Feed Ingredients in Cecectomized Adult Roosters
Provedor de dados: 89
Autores: Leme,BB; Sakomura,N; Viana,GS; Soares,L; Melaré,MC; Oliveira,MJK; Mansano,CFM.
ABSTRACT A digestibility assay was conducted in order to determine the digestibility coefficients (DC) of amino acids of feed ingredients in cecectomized adult roosters. In total 48 cecectomized adult roosters were used to assess the coefficient of digestibility of 7 ingredients: corn, soybean meal, soybean concentrate, corn gluten meal, wheat bran, peanut meal, and feather meal. Each ingredient was replicated six times and a group of 6 rooster was used to measure endogenous amino acid losses. After 48 hours of fasting, the roosters were tube fed 20g of ingredients tested twice during a day. At 12 hour-intervals excreta and endogenous losses were collected and immediately freeze-dried for further chemical analysis. At the end of the assay, excreta were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cecectomized; Digestible amino acids; Poultry.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200340

Ammonia emissions in tunnel-ventilated broiler houses
Provedor de dados: 89
Autores: Lima,KAO; Moura,DJ; Carvalho,TMR; Bueno,LGF; Vercellino,RA.
Gas production in broiler houses and their emissions are closely related to the microclimate established inside the house according to air temperature, humidity, and velocity. Therefore, the internal house environment is influenced by building typology and ventilation system. The objective of the present study was to evaluate ammonia emission rates in broiler houses equipped with different ventilation systems (negative or positive pressure) and litter conditions (new or built-up). The environment of six commercial broiler houses was evaluated internal and external NH3 concentrations. Ventilation rates were recorded to estimate ammonia emission rates. The efficiency of circulation and exhaust fans was assessed, and higher ventilation rates were determined...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Gas emissions; Ventilation systems.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400008

An alternative for antibiotic se in poultry: probiotics
Provedor de dados: 89
Autores: Edens,FW.
Over the past 50 years, there has been increasing amounts of antibiotics used prophylactically and as growth promoters. Today, there is a consumer and governmental outcry to eliminate that practice from poultry and livestock production. Evidence has been accumulated to show that there is a link between risk of zoonotic disease and growth promoting antibiotic usage in livestock and poultry. Therefore, alternatives to the use of growth promoting antibiotics must be found to promote growth or production at or near the genetic potential of the modern day broiler, turkey, and egg producer. The use of probiotics has many potential benefits and include modified host metabolism, immuno-stimulation, anti-inflammatory reactions, exclusion and killing of pathogens in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Antibiotic resistance; Benefits; Characteristics; Chickens; Defined culture; Functions; History; Human health risk; Mechanism of action; Probiotics; Turkeys; Undefined culture; Zoonotic disease.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200001

An Assessment of Chemical and Microbiological Properties of Different Types of Poultry Waste Compost Prepared by Bin and Windrow Composting System
Provedor de dados: 89
Autores: Irfan,M; Mehmood,S; Mahmud,A; Anjum,AA.
ABSTRACT The present study aimed to evaluate the physical, chemical, and microbiological characteristics of 4 different poultry waste (dead birds, hatchery waste, offal, and a mixture of all) processed under two composting systems (bin and windrow). For this purpose, 12 compost bins and 12 windrow piles having different poultry waste were placed according to 2 × 4 factorial arrangements under Completely Randomized Design. Treatments consisted of 2 composting systems (bin and windrow) and 4 compost types (dead birds, offal, hatchery waste, and a mixture of all). The bins were comprised of 3 compartments (primary, secondary, and curing) and filled with dead birds, offal, hatchery waste, and a mixture of all. A similar procedure was adopted for the windrow...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bin; Chemical; Composting; Microbiological; Poultry Waste; Windrow.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400301

An Intelligent Procedure for the Detection and Classification of Chickens Infected by Clostridium Perfringens Based on their Vocalization
Provedor de dados: 89
Autores: Sadeghi,M; Banakar,A; Khazaee,M; Soleimani,MR.
ABSTRACT In this study, an intelligent method was implemented for the detection and classification of chickens by infected Clostridium perfringens type A based on their vocalization. To this aim, the birds were first divided into two groups that were placed in separate cages with 15 chickens each. Chickens were inoculated with Clostridium perfringens type A on day 14. In order to ensure the absence of secondary diseases and their probable effect on bird vocalization, vaccines for common diseases were administered. During 30 days of the experiment, chicken vocalization was recorded every morning at 8 a.m. using a microphone and a data collection card under equal and controlled conditions. Sound signals were investigated in time domains, and 23 features were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry health; Bird sound classification; Clostridium perfringens type A; Data mining; Artificial neural network.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400537

An Outbreak of Intestinal Obstruction by Ascaridia Galli in Broilers in Minas Gerais
Provedor de dados: 89
Autores: Torres,ACD; Costa,CS; Pinto,PN; Santos,HA; Amarante,AF; Gómez,SYM; Resende,M; Martins,NRS.
ABSTRACT Industrial broilers raised on helminthic medication-free feed were diagnosed with a severe disease caused by Ascaridia galli, characterized by intestinal hemorrhage and obstruction. A. galli was identified based on the morphological features of the nematode. Broilers were raised for a longer period (63 days) for weight recovery, grouped as stunted (n=500), had low body score and had fetid diarrhea. The duodenum-jejunum segment was the most severely affected with obstruction and had localized accumulation of gas. The intestinal mucosa was severely congested with petechial and suffusive hemorrhages. The outbreak resulted in morbidity of about 10% and mortality of up to 4% and was associated to the absence of preventive medication on feed and slack...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascaroidea; Broiler chicken; Nematode; Enteriitis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400322

An overview on avian influenza
Provedor de dados: 89
Autores: Martins,Nelson Rodrigo da Silva.
Avian influenza (AI) is considered an exotic disease in the Brazilian poultry industry, according to the National Avian Health Program (PNSA), with permanent monitoring of domestic, exotic and native avian species. Brazil presents privileged environmental conditions of reduced risk. In addition, all commercial poultry and conservation holdings are registered in state or national inventories and geographically located (GPS) for health control. Poultry health standards are adopted for the conformity to the international market, mostly for the intensified poultry destined for exportation, but also for companion exotic and native conservation facilities. Guidelines for monitoring and the diagnosis of AI are published by the PNSA and follow the standards...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian influenza; Epidemics; Global health.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200001

An Overview on Marek’s Disease Virus Evolution and Evidence for Increased Virulence in Brazil
Provedor de dados: 89
Autores: Torres,ACD; Marin,SY; Costa,CS; Martins,NRS.
ABSTRACT Marek’s disease virus (MDV) has been shown to be evolving to higher virulence. One of the genetic sites involved in virulence which enables such characterization is the 339-amino acid Meq protein encoding gene (meq). The reemergence of clinical Marek’s disease (MD) in vaccinated flocks can be associated to changes in meq. Our studies have shown the presence of very virulent MDV strains in the Brazilian industrial and free-range poultry. We present an overview of MD increasing severity and indicate the necessity of using phylogenetic tools for best accompanying MDV evolution.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gallid herpesvirus 2; Marek’s disease virus; Gallus gallus domesticus; Meq gene; Virulence.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100325

ANALYSIS OF AIR QUALITY IN SELECTED AREAS OF A POULTRY PROCESSING PLANT WITH THE USE OF A MICROBIOLOGICAL AIR SAMPLER
Provedor de dados: 89
Autores: Konieczny,P; Cegielska-Radziejewska,R; Mroczek,E; Dziedzic,J.
ABSTRACT The aim of the study was to analyze the air quality in selected production facilities specified as the so-called "high-risk zones". Air samples were analyzed using either the sedimentation or the impaction methods. The impaction method showed the applicability of the air sampler in in-situ measurements. An increase in the numbers of aerobic bacteria was observed in most air sample collection sites as the duration of the production time increased. At the three successive dates, it amounted to 163 cfu/m3, 205 cfu/m3, and 324 cfu/m3, respectively. Such dependence was not observed by the of sedimentation method. It was stated that the impaction technique is better to precisely determine numbers of bacteria, yeast, and molds in the air of poultry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry processing plant; Microbiological air quality; Impaction technique.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300401

Analysis of Barriers to Brazilian Chicken Meat Imports
Provedor de dados: 89
Autores: Aranda,MA; Sgavioli,S; Domingues,CHF; Santos,ET; Nääs,IA; Moura,JB; Garcia,RG.
ABSTRACT Trade liberalization during the last decades has increased among nations as a result of decreased tariffs. However, during the same period, market agents have created new protection measures to replace such mechanisms in an attempt to promote the domestic economic stability of countries, while expanding and ensuring the trade between nations. Considering that Brazil is the second largest broiler producer and chicken-meat exporter worldwide, the present study proposed to analyze the main barriers imposed on Brazilian chicken meat imports by the ten major importing countries. This is a documentary research with primary and secondary data, of a descriptive-exploratory nature, under a qualitative approach. Semi-structured questionnaires including...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry production; International trade; Exports; Protectionism.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200312

Analysis of Behavioural Profile of Hens with the Use of Computer Software
Provedor de dados: 89
Autores: Rozempolska-Rucinska,I; Bownik,A; Prochniak,T; Zieba,G; Slaska,B; Kasperek,K; Kozak,A.
ABSTRACT The aim of the study was to evaluate the emotional reactivity of hens with the use of physical parameters such as movement velocity and position of the selected parts of the body analysed by computer software - Tracker®. 200 Rhode Island White hens kept individually in a laying hen breeding farm were used in the study. The analysis of hens behaviour was performed with the use of Novel Object Test. Afterwards the video clips were analysed to determine behavioural reactivity with the use of Tracker® software by analysis of two control points: the upper part of the head and the peak of the tail. The results suggest that it is possible to use Tracker® software for evaluation of hens behavioural profile and this sort of analysis enables to classify...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emotional reactivity; Laying hens; Novel Object Test; Tracker® software.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300413

Analysis of Variables Affecting Carcass Weight of White Turkeys by Regression Analysis Based on Factor Analysis Scores and Ridge Regression
Provedor de dados: 89
Autores: Çelik,Ş; Şengül,T; Söğüt,B; Inci,H; Şengül,AY; Kayaokay,A; Ayaşan,T.
ABSTRACT In this study, the influence of carcass parts weights (thigh, breast, wing, back weight, gizzard, heart, and feet) on whole carcass weight of white turkeys (Big-6) was analyzed by regression analysis based on ridge regression and factor analysis scores. For this purpose, a total of 30 turkey carcasses of 15 males and 15 females with 17 weeks of age, were used. To determine the carcass weight (CW), thigh weight (TW), breast weight (BRW), wing weight (WW), back weight (BW), gizzard weight (GW), heart weight (HW), and feet weight (FW) were used. In the ridge regression model, since the Variance Inflation Factor (VIF) values of the variables were less than 10, the multicollinearity problem was eliminated. Furthermore, R2=0.988 was obtained in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass weight; Carcass parts; Factor analysis score based regression; Ridge regression; White turkeys.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200273

Analysis of Water in the Chicken Eggshell Using the 1H Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
Provedor de dados: 89
Autores: Szeleszczuk,Ł; Pisklak,DM; Wawer,I.
ABSTRACT The water content of the chicken eggshell has a major influence on gas (CO2 and O2) permeability. Inappropriate water loss during the incubation period increases embryo mortality and decreases chick quality. So far only the procedures that enable to determine the total water content in the eggshell have been described and developed. Our analysis of the 1H MAS NMR spectra of the chicken eggshell samples revealed three signals, differing significantly in the chemical shift and relaxation times (T1) parameters. In this work we have assigned those signals and described the changes in their intensities that occur during the incubation period. Using 1H MAS NMR it is possible to distinguish two types of water reservoirs in the chicken eggshell. This...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water; Chicken eggshell; NMR; Incubation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600027

Analyzing Growth Curves of Turkeys Reared in Different Breeding Systems (Intensive and Free-Range) with some Nonlinear Models
Provedor de dados: 89
Autores: Sogut,B; Celik,S; Ayasan,T; Inci,H.
ABSTRACT The objective of this study was to identify the growth curve of live weight of turkeys reared in different systems (intensive and free- range) with the best mathematical model. To achieve this goal, the live weight of male and female turkeys (Large White) reared for 0-18 weeks were used. Logistic, Gompertz, Von Bertalanffy, and Gauss were used to determine the best model for the turkeys. In comparison of the models, values of Coefficient of Determination (R2), Mean Squares of Error (MSE) and Model Efficiency (ME) were used. In Von Bertalanffy model, the coefficient of determinations for males and females were found as 0.9974 and 0.99915 in intensive system and 0.9794 and 0.9804 in Free-Range system, respectively. As a result of this study, because...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding system; Growth models; Large white turkey; Live weight.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400619

Animal welfare concepts and strategy for poultry production: a review
Provedor de dados: 89
Autores: Moura,DJ; Nääs,IA; Pereira,DF; Silva,RBTR; Camargo,GA.
Well being of animals had been historically a public concern, since the beginning of human kind history. As world's population grows there is a need for food including meat. In the last decades there has been a great improvement in poultry production based on the careful control of several aspects, among which nutrition and management (environment, health and rearing systems). Nowadays, the search for good welfare conditions is a global tendency in animal production; however issues surrounding farm animal welfare or well-being, such as definitions, measurements, interpretation, and perception, continue to be controversial. It is known that the result of a broiler not adequately housed is a direct loss in production which leads towards a thought that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird welfare; Housing; Behavioral pattern; Welfare assessment.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300001

Antibacterial efficacy of commercial disinfectants on dirt floor used in poultry breeder houses
Provedor de dados: 89
Autores: Pilotto,F; Rodrigues,LB; Santos,LR; Klein,WA; Colussi,FM; Nascimento,VP.
Dirt floors are used on most Brazilian poultry farms since the construction of concrete floors is very expensive. In vitro tests carried out to verify the effectiveness of disinfectants do not consider the adverse conditions found in poultry farms. Therefore, the present study aimed at evaluating the effect of six commercial disinfectants on the reduction of total and fecal coliforms on the dirt floor of breeder houses. The amount of disinfectant solution to be used per square meter was defined by counting total and fecal coliforms at different soil depths and by analyzing soil physical properties. Coliforms were detected at 0.5 cm, and one liter of disinfectant solution was sufficient for soil saturation at this depth. After that, the efficacy of six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial activity; Dirt floor; Disinfectants; Poultry breeder houses.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200009

Anticorpos Para o Vírus da Anemia das Galinhas (CAV) em Matrizes de Corte no Brasil
Provedor de dados: 89
Autores: Brentano,L; Silva,BG; Sayd,S; Flores,SW.
Apesar do diagnóstico da anemia infecciosa e mais evidências recentes de infecção em campo (Brentano &amp;amp; Ottati, 1999), não havia até hoje dados disponíveis da prevalência do vírus da anemia das galinhas (CAV) no Brasil. Uma vez que o conhecimento da prevalência do vírus e da distribuição de anticorpos nos lotes de matrizes é essencial para o delineamento de estratégias de controle da doença, realizamos um levantamento em 5 Estados com produção comercial intensiva de linhas de corte, abrangendo lotes de aves com diferentes idades. De 2.355 soros testados por ELISA, 89% foram positivos, indicando a alta prevalência do CAV no Brasil, em todos os Estados testados. A análise do soro de aves das 6 até as 70 semanas de idade demonstrou que lotes de 6 a 18...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anemia infecciosa das galinhas; Vírus da anemia das galinhas; Anticorpos; ELISA.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200006

Antimicrobial effect of turmeric (Curcuma longa) on chicken breast meat contamination
Provedor de dados: 89
Autores: Lourenço,TC; Mendonça,EP; Nalevaiko,PC; Melo,RT; Silva,PL; Rossi,DA.
The aim of this study was to evaluate the efficacy of turmeric (Curcuma longa), also known in Brazil as saffron, on the reduction of Staphylococcus aureus and Escherichia coli counts in chicken meat. Forty breast meat samples were divided in two groups (A and B). In group A, 10³-10(4)E. coli (ATCC 25922) cells were inoculated and group B samples were inoculated with 10(4)-10(5)S. aureus (ATCC 9801) cells, after which each group was divided in three samples. The first sample was analyzed immediately after inoculation. The second sample (control group) was stored at 4 ºC for 48 hours and turmeric at 1% (w/w) was added to the third sample, which was homogenized and then stored under the same conditions as the second sample. E. coli and S. aureus were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Turmeric; Bacterial growth; Escherichia coli; Staphylococcus aureus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200002

Antimicrobial Resistance and Molecular Characterization of Salmonella Enterica Serotypes Isolated from Poultry Sources in Brazil
Provedor de dados: 89
Autores: Borges,KA; Furian,TQ; Souza,SN; Salle,CTP; Moraes,HLS; Nascimento,VP.
ABSTRACT Salmonella spp. remain among the most important agents of foodborne diseases worldwide. The importance of Salmonella spp. in public health is linked to their wide range of antimicrobial resistance and to their pathogenicity and virulence in both human and animal hosts. The aim of this study was to determine the antimicrobial resistance patterns for Salmonella serotypes isolated from poultry sources in Brazil and to detect virulence-associated genes and verify their association with specific serotypes. A total of 163 strains of Salmonella enterica isolated from poultry sources in Southern Brazil were selected, and each belonged to one of 11 different serotypes. They were tested against ten antibiotics and examined for the presence of 26...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Antibiotic susceptibility; Genetic virulence; Chicken; Salmonellosis; Serovars.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100500

Antimicrobial Resistance in Campylobacter jejuni Isolated from Brazilian Poultry Slaughterhouses
Provedor de dados: 89
Autores: Paravisi,M; Laviniki,V; Bassani,J; Kunert Filho,HC; Carvalho,D; Wilsmann,DE; Borges,KA; Furian,TQ; Salle,CTP; Moraes,HLS; Nascimento,VP.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial resistance; Campylobacter jejuni; GyrA; Mutation; Poultry; TetO.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200323

Antimicrobial Resistance in Salmonella Serovars Isolated From an Egg-Producing Region in Brazil
Provedor de dados: 89
Autores: Benevides,VP; Rubio,MS; Alves,LBR; Barbosa,FO; Souza,AIS; Almeida,AM; Casas,MRT; Guastalli,EAL; Soares,NM; Berchieri Jr,A.
ABSTRACT Fowl paratyphoid infections are caused by different Salmonella serovars that can affect a wide range of hosts. Due to its complex epidemiology, Salmonella serovar identification is crucial for the development and implementation of monitoring and control programs in poultry farms. Moreover, the characterization of the antimicrobial resistance profiles of Salmonella strains isolated from livestock is relevant to public health because they are a common causative agent of foodborne diseases. The objective of this study was to investigate the presence of Salmonella spp. and to identify the antimicrobial resistance profiles of strains isolated in the midwestern region of São Paulo state, which accounts for the highest production of table eggs in Brazil....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial susceptibility; Foodborne disease; Salmonellosis; Multi-drug resistance; Public health.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200319

Antimicrobial resistance of bacterial strains isolated from avian cellulitis
Provedor de dados: 89
Autores: Santos,MM; Alcântara,ACM; Perecmanis,S; Campos,A; Santana,AP.
Avian cellulitis is an inflammatory process in the subcutaneous tissue, mainly located in the abdomen and thighs. This problem is commonly observed in poultry at slaughter and it is considered one of the major causes of condemnation of carcasses in Brazil. The aim of this study was to perform the microbial isolation of lesions of avian cellulitis from a processing plant located in the State of Goiás in order to analyze antimicrobial resistance by antibiogram test and to detect resistance genes by polymerase chain reaction. A total of 25 samples of avian cellulitis lesions were analyzed, from which 30 bacterial strains were isolated. There were eleven (44%) strains of Escherichia coli, nine (36%) strains of Staphylococcus epidermidis, seven (28%) strains of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PCR; Antibiotic susceptibility test; Poultry carcasses.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100002

Antimicrobial Susceptibility and Biofilm Production by Salmonella sp. Strains Isolated from Frozen Poultry Carcasses
Provedor de dados: 89
Autores: Sereno,MJ; Ziech,RE; Druziani,JT; Pereira,JG; Bersot,LS.
ABSTRACT The objectives of this study were to evaluate the antimicrobial resistance and the biofilm-producing ability of Salmonella sp. strains isolated from frozen poultry carcasses. Antimicrobial susceptibility was tested by the disk-diffusion method. Biofilm-producing ability was determined in 96-well polystyrene microplates stained with crystal violet at 1%. Out of the 22 strains tested, all were multiresistant, that is, resistant to more than three antimicrobial classes, and 72.7% were able to form biofilms. The highest resistance rates obtained were against sulfonamides, tetracycline, and quinolones. On the other hand, 100% of the strains were sensitive to chloramphenicol. According to the rate of biofilm formation, 3 (13.6%) and 13 (59.1%) strains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm formation; Food pathogens; Multidrug-resistance; Poultry meat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100103

Antioxidant and bacteriostatic effects of the addition of extract of quillay polyphenols (Quillaja saponaria) in the marinade of broiler chicken
Provedor de dados: 89
Autores: Fellenberg,MA; Espinoza,A; Peña,I; Alarcón,J.
The nutritional and sensorial characteristics of chicken meat can be affected by oxidative rancidity, process of oxidation of lipids in the meat that constitutes one of the main forms of food deterioration. This problem may be prevented or reduced by adding antioxidants to the meat during the process of marination. In the present study, the addition of a polyphenol-rich quillay extract (QLPerm®) at 5 levels (0, 0.05, 0.10, 0.15, and 0.20%) to the marinade of chicken meat was evaluated. The marinated meat was stored under refrigeration (6 ºC) for 0, 2, 4, 6, and 8 days. Basal and induced lipid oxidation was evaluated by TBARS analysis. Microbiological quality was assessed by total coliforms and mesophillic aerobe counts. The application of this natural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler meat; Lipid oxidation; Marinade; Polyphenols; Quillay.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100011

Apparent Faecal Digestibility of Essential Amino Acids from Ω3 Pufa Diets for Laying Hens
Provedor de dados: 89
Autores: Varzaru,I; Panaite,TD; Cornescu,GM; Olteanu,M.
ABSTRACT The apparent faecal digestibility of the essential amino acids from Ω3 PUFA layer diets and feeding solutions to avoid possible adverse effects of such diets were investigated in two experiments conducted on Lohmann Brown laying hens. Experiment 1 used 72 layers assigned to three groups (C1, E1-1, E2), while experiment 2 used 96 layers assigned to four groups (C2, E1-2, E3, E4). All experimental diets have been enriched in Ω 3 PUFA by supplementing a conventional diet (C1, C2) with 5% flaxseed meal and 2% camelina meal. Diets E2 and E4 had an increased level of Cu (150 mg/kg), diets E3 and E4 were supplemented with 0.0125% enzyme mix, while diets E1-1 and E1-2 were only supplemented with 5% flaxseed meal and 2% camelina meal. The digestibility...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid digestibility; PUFA enriched diets; Laying hen.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300317

Appearance and Digestive System Comparison of Lonchura Striata and Copsychus Saularis: Searching for the Effect of Staple Feeding Ingredients on Avian Morphology
Provedor de dados: 89
Autores: Huang,R; Li,L; Song,B; Lyu,Y; Wu,B.
ABSTRACT This study explores the differences of appearance and the digestive systems of two birds (Lonchura striata and Copsychus saularis), which have the same eating pattern in staple ingredients. Each bird was caught naturally and euthanized in appropriate manner, followed by morphology survey on bill, duodenum, jejunum, ileum and appearance of the body parts such as Culmen, Claw, Wing, Tarsus, Toe and Tail. The results showed that the appearance feature between them presented significant differences in the beak length, wing length and tail length, which were correlated to their staple feeding habits. In addition, in the digestive system, the length of duodenum and duodenal indexes showed significant differences (p&lt;0.05 or p&lt;0.01), which was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lonchura striata; Copsychus saularis; Feature parameters; Digestive system; Feeding habits.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400309

APPLICABILITY OF NON-FEED REMOVAL PROGRAMS TO INDUCE MOLTING INSTEAD OF THE CONVENTIONAL FEED WITHDRAWAL METHOD IN BROWN LAYING HENS
Provedor de dados: 89
Autores: Sariozkan,S; Kara,K; Güçlü,BK.
ABSTRACT This study was conducted to compare the applicability of non-feed removal (NFR) programs to induce molting in brown laying hens by feedusing alfalfa meal and barley grain on molting of instead of feed withdrawal in terms of performance, egg quality and profitability. A total of 240, 75-week-old Hy-Line brown laying hens were randomly divided into three groups as conventional feed withdrawal (CONV), and two non-feed removal programs using alfalfa meal (A+F) or barley grain (B+F), each containing 80 hens with 20 replicates (4 hens x 20 replicates = 80 hens). After 10 days of the induced molting the lowest body weight loss (20.01%) was found in the B+F method (p&lt; 0.01). In the second cycle, onset of egg production days were significantly different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alfalfa; Barley; Performance; Profit; Quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300535

Artemisia Annua as Phytogenic Feed Additive in the Diet of Broilers (14-35 Days) Reared under Heat Stress (32 ºC)
Provedor de dados: 89
Autores: Saracila,M; Criste,RD; Panaite,TD; Vlaicu,PA; Tabuc,C; Turcu,RP; Olteanu,M.
ABSTRACT The 21 days feeding trial was conducted on 90, Cobb 500 broilers (aged 14 days), assigned to 3 groups (C, E1 and E2) housed in an experimental hall at 32° C constant temperature and 23 h light regimen. During the growth period (14-35 days), the conventional diet (C) had corn and soybean meal as basic ingredients. Unlike the conventional diet formulation (C), the diet formulations for the experimental groups also included 0.005% Artemisia annua oil (E1) and 0.005% Artemisia annua oil plus 1% Artemisia annua powder (E2). Six broilers per group were slaughtered at 35 days of age in order to measure the weight of the carcass and internal organs of broilers, and samples of intestinal and caecal content were collected for bacteriological assessment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemisia annua; Broiler chickens; Growth performance; Gut microbiota; Heat stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400825

Arthrospira (Spirulina) Platensis Can Be Considered as a Probiotic Alternative to Reduce Heat Stress in Laying Japanese Quails
Provedor de dados: 89
Autores: Hajati,H; Zaghari,M; Oliveira,HC.
ABSTRACT This study was conducted to investigate the effects of Arthrospira platensis (Spirulina platensis, SP) on feed intake, feed conversion ratio, egg weight, hen day egg production, intestinal microflora, heat stress biomarkers, and HSP70 gene expression in laying Japanese quails (Coturnix coturnix japonica) suffering heat stress condition. A total of 250 female quails were allocated to 5 treatments, 5 replicates and 10 birds in each replicate in a completely randomized design. Experimental treatments included: 1) basal diet, 2) basal diet+ 0.03 % probiotic, 3) basal diet+ 0.1 % SP, 4) basal diet+ 0.3 % SP, 5) basal diet+ 0.5 % SP. During the last 6 days of the experiment, the quails were exposed to 8h of 34±1°C. The birds had free access to feed and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Heat stress; HSP70 gene; Japanese quails; Spirulina platensis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100307

Ascorbic acid and citric flavonoids for broilers under heat stress: effects on performance and meat quality
Provedor de dados: 89
Autores: Peña,JEM; Vieira,SL; López,J; Reis,RN; Barros,R; Furtado,FVF; Silva,PX.
The aim of this study was to evaluate the effects of increasing doses of ascorbic acid (AA) and citric flavonoids (quercetin and rutin) on the performance and meat quality characteristics of broilers submitted to cyclic heat stress. Four-hundred one-day-old female Ross 308 were housed in 40 battery cages a in temperature controlled room. Treatments consisted of 0, 250, 500, and 1000 g/ton on of AA + citric flavonoids. Birds were fed ad libitum until 32 day of age. Beginning on day 14 post-hatch until the end of the experiment, in order to simulate cyclic heat stress, the temperature inside the room was increased to 32°C for 5 hours, and decreased until reaching the comfort temperature corresponding to the age of the animals. Birds were slaughtered at 33...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascorbic acid; Broiler; Heat stress; Flavonoids.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200008

Aspectos Microbiológicos e Demanda de Cloro de Amostras de Água de Dessedentação de Frangos de Corte Coletadas em Bebedouros Pendulares
Provedor de dados: 89
Autores: Barros,LSS; Amaral,LA; Rossi Jr,OD.
Foram analisadas 72 amostras da água de dessedentação de frangos de corte, 18 da entrada e 54 dos bebedouros pendulares. As amostras foram submetidas às mensurações de coliformes totais, coliformes fecais, estreptococos fecais, Escherichia coli e organismos mesófilos, além da detecção da presença de Salmonella sp e da taxa de demanda de cloro. Os resultados evidenciaram uma elevada contaminação bacteriológica, já na primeira semana, com os indicadores na ordem de 10³ a 10(5). Não houve isolamento de nenhuma cepa de Salmonella sp, provavelmente por não haver ave infectada no plantel. A taxa de demanda de cloro mostrou-se elevada, devido ao maior acúmulo de matéria orgânica nos bebedouros, com o ápice na quinta semana (98,7%), seguida de uma leve diminuição...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Água; Frangos de corte; Bebedouro pendular; Qualidade microbiológica; Demanda de cloro.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200009

Assessing bone mineral density, eggshell characteristics and their relationship at peak egg production of laying hens in response to various levels of vitamin C
Provedor de dados: 89
Autores: Saki,AA; Rahmati,MMH; Eskandarlou,A; Zamani,P; Hosseini Siyar,SA.
In this study, the effects of the inclusion of different vitamin C levels in the diet on bone mineral density (BMD) and eggshell quality was determined. Four experimental diets with four levels of vitamin C (0, 250, 500 and 750 mg/kg) were used. During the experiment, environmental temperature and humidity were 19±1°C and 55±5% respectively. Correlation coefficients of BMD index and shell characteristics with production parameters were also determined. Egg weight, egg mass, hen-day egg production and eggshell quality were not significantly influenced by vitamin C levels. BMD was not affected by vitamin C utilization. A positive correlation was observed between BMD and egg weight and hen-day egg production. A significant positive correlation between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineralization; Egg quality; Layer hen; Vitamin C.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300007

Assessing paternity in japanese quails (Coturnix japonica) using microsatellite markers - inferences for its mating system and reproductive success
Provedor de dados: 89
Autores: Gomes,ML; Hatanaka,T; Campos,WN de; Wasko,AP.
Microsatellite markers were analyzed in Japanese quails, Coturnix japonica, using different methodologies (PAGE and automated genotyping), in order to evaluate their use in paternity testing. Ten animal triplets composed by a female and two males were used to mate and generate an offspring. Paternity was determined in five-day-old embryos, and the data generated by fluorescent labeled and tailored primers in PCR and further automated genotyping were robust. Three microsatellite markers were polymorphic (Na = 5-8, H E = 0.75) and no loci were found to deviate significantly from Hardy-Weinberg equilibrium or showed any evidence of linkage disequilibrium (p &gt; 0.05). A slight heterozygote deficiency and some incompatibilities between the female known parent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix japonica; Parentage testing; Polyandry; Quail; SSRs.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400007

Assessment of 47Ca Distribution and Biological Half-Life in Japanese Quail Chicks
Provedor de dados: 89
Autores: Hassanin,WF; Ibrahim,NS; El-Barkouky,EE; Abu-Taleb,AM.
ABSTRACT A study was conducted to assess 47Calcium (47Ca) distribution and biological half-life in different body organs of Japanese quail chicks. A total of 85, 4 week old chicks, were dosed with 1ml/chick volume of 1% (w/v) CaCl2 solution containing 7.51x10-08 Ci 47Ca which is equivalent to 1.27x10-13 g. 47Ca activity, in terms of decay per minute (DPM), was measured in different body organs at 12 hours time intervals, after 24 hours from ingestion for five days. The total activity of 47Ca for each organ and activity per gram of organ (D.min-1.g-1) was calculated. Data were Statistically analyzed using completely randomized design (CRD), one way analysis of variance (ANOVA) as per the procedure given by SPSS (2002), 9.0 version for Windows. The results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 47 Ca Distribution; Quail chicks; Biological half-life.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400304

Assessment of a probiotic Containing Bacillus Subtilis on the Performance and Gut Health of Laying Japanese Quails (Coturnix Coturnix Japonica)
Provedor de dados: 89
Autores: Manafi,M; Khalaji,S; Hedayati,M.
ABSTRACT The present study was carried out to determine the effects of the inclusion of a spore-forming probiotic (Bacillus subtilis) in laying Japanese quail diets as an alternative to growth-promoting antibiotics to help produce healthy eggs and meat. This experiment was conducted as a completely randomized design with three treatments (control, 0.05% bacitracin methylene disalicylate (BMD), or 0.1% Bacillus subtilis) of five replicates of 11 quails each. Feed intake and egg production were recorded daily on cage basis. Body weight was determined at the beginning and end of the trial (36 and 42 weeks). At the end of the experiment (42 weeks), antibodies against Newcastle disease and avian influenza, egg components, Haugh units, eggshell quality and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Japanese quails; Egg production; Gut health; Immune response.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400599

ASSESSMENT OF BENZOPHENANTHRIDINE AND PROTOPINE ALKALOIDS IN BROILER CHALLENGED AND NOT BY SALMONELLA HEIDELBERG
Provedor de dados: 89
Autores: Previato do Amaral,PFG; Otutumi,LK; Rodrigues,GV; Lima,ET; Fernandes,JIM; Vendrame,A; Mezalira,TS; Suenaga,SS; Sestari,DAO; Cestari,IED; Martins,LA.
ABSTRACT Salmonellosis is a globally important zoonosis, and Salmonella Heidelberg is one of the most prevalent serovars in poultry production worldwide, as well as in food poisoning cases. Antimicrobial drugs were previously widely used to face health challenges in animal production; however, since their ban as performance enhancers, many alternative strategies have been proposed. One of these strategies is the use of plant extracts, such as those containing the alkaloids benzophenanthridine and protopine. These compounds have antimicrobial, anti-inflammatory, immunomodulation, and nutritional effects. The objective of the present study was to evaluate the effects of the supply of a product containing benzophenanthridine and protopine (Sangrovit(r)WS 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaloids; Broilers; Intestinal morphology; Performance; Sanguinarine.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300525

Assessment of Broiler Chicken Welfare in Southern Brazil
Provedor de dados: 89
Autores: Federici,JF; Vanderhasselt,R; Sans,ECO; Tuyttens,FAM; Souza,APO; Molento,CFM.
Abstract Scientific literature on broiler chicken welfare in Brazilian industrial systems is scarce. This study aimed at assessing broiler chicken welfare on industrial farms in the State of Rio Grande do Sul, Southern Brazil, using the Welfare Quality(r) assessment protocol for poultry, to provide directly applicable scientific information. Results are presented as criteria scores ranging from 0 to 100, with higher scores indicating better welfare; and percentages of prevalence. The scores classified as excellent (above 80) were absence of prolonged thirst, absence of prolonged hunger, litter quality, breast blister and touch test. Enhanced scores (between 55 and 80) were comfort around resting, plumage cleanliness and dust sheet test. Acceptable scores...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Assessment; Diagnosis; Poultry welfare; Welfare Quality(r).
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100133

Assessment of broiler surface temperature variation when exposed to different air temperatures
Provedor de dados: 89
Autores: Nascimento,GR; Nääs,IA; Pereira,DF; Baracho,MS; Garcia,R.
This study was conducted to determine the effect of the air temperature variation on the mean surface temperature (MST) of 7- to 35-day-old broiler chickens using infrared thermometry to estimate MST, and to study surface temperature variation of the wings, head, legs, back and comb as affected by air temperature and broiler age. One hundred Cobb® broilers were used in the experiment. Starting on day 7, 10 birds were weekly selected at random, housed in an environmental chamber and reared under three distinct temperatures (18, 25 and 32 ºC) to record their thermal profile using an infrared thermal camera. The recorded images were processed to estimate MST by selecting the whole area of the bird within the picture and comparing it with the values obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Image analysis; Poultry; Thermal comfort.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400007

Assessment of Egg Quality in Native and Foreign Laying Hybrids Reared in Different Cage Densities
Provedor de dados: 89
Autores: Ozenturk,U; Yildiz,A.
ABSTRACT This study aimed to compare the eggs of the native-Turkish Atak-S (A-S) hybrid and the foreign brown layer Isa Brown (IB) and white layer Novogen White (NW) hybrids reared in two different cage densities (468.75 cm2/hen and 312.50 cm2/hen) in terms of the internal and external quality parameters of the eggs. A total of 540 hens including 180 from each genotype were used. To determine the egg quality characteristics, one randomly selected egg was taken out of each cage every 4 weeks in the yield period of 24-68 weeks, and analysis were carried out. A total of 648 eggs were used. In the study, the effect of genotype on all parameters was found to be significant. The shell thickness, Haugh unit and albumen index were lower in the Atak-S hybrid. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Atak-S; Cage density; Egg quality; Laying hens.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300313

Assessment of Egg Quality in Native and Foreign Laying Hybrids Reared in Different Cage Densities
Provedor de dados: 89
Autores: Ozenturk,U; Yildiz,A.
ABSTRACT This study aimed to compare the eggs of the native-Turkish Atak-S (A-S) hybrid and the foreign brown layer Isa Brown (IB) and white layer Novogen White (NW) hybrids reared in two different cage densities (468.75 cm2/hen and 312.50 cm2/hen) in terms of the internal and external quality parameters of the eggs. A total of 540 hens including 180 from each genotype were used. To determine the egg quality characteristics, one randomly selected egg was taken out of each cage every 4 weeks in the yield period of 24-68 weeks, and analysis were carried out. A total of 648 eggs were used. In the study, the effect of genotype on all parameters was found to be significant. The shell thickness, Haugh unit and albumen index were lower in the Atak-S hybrid. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Atak-S; Cage density; Egg quality; Laying hens.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400313

Assessment of serological response of chickens to Salmonella Gallinarum and Salmonella Pullorum by Elisa
Provedor de dados: 89
Autores: Oliveira,GH de&lt;A NAME="nt01a"&gt;&lt;/A&gt;; Berchieri Júnior,Â; Montassier,HJ; Fernandes,AC.
This study was done to assess an enzyme-linked immunosorbent assay (ELISA) to detect chicken serological response against Salmonella enterica serotypes Gallinarum and Pullorum. The assays have used soluble bacterial proteins of Salmonella Gallinarum strain 9 (AgSG) as detecting antigen and peroxidase and alkaline phosphatase conjugates. According to the results, the antigen, sera and conjugate concentrations were optimized. In addition, the assay using alkaline phosphatase and peroxidase conjugates was helpful to distinguish positive serological reaction to serotypes Gallinarum and Pullorum from Enteritidis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickens; Conjugate; ELISA; Salmonella sp; Serology.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200007

Association Analysis Between Polymorphism of Gonadotrophin Releasing Hormone Genes and Growth Traits of Quail (Coturnix Coturnix)
Provedor de dados: 89
Autores: Bai,J; Dong,ZH; Lei,Y; Yang,YB; Jia,XP; Li,JY.
ABSTRACT This study investigated SNP mutation sites of Gonadotrophin releasing hormone (GnRH) gene in China yellow quail, Beijing white quail and Korean quail through PCR amplification and DNA sequencing technologies. Moreover, polymorphism of GnRH gene and its association with growth traits of quail were analyzed, aiming to get molecular markers associated to growth traits of quail, which could provide references for breeding of new quail species. According to research results, a total of 14 SNP mutation sites of GnRH were detected in China yellow quail, Beijing white quail and Korean quail, which were C71T, C108T, C168T, C178T, A184G, C206T, A209C, C215T, A252G, A279T, C281T, C293G, C339T and C458T. Except that only 2 genotypes were detected for A209C...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gonadotrophin releasing hormone (GnRH) gene; DNA sequencing; SNP; Polymorphism; Body weight.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100312

Atividade enzimática pancreática de frangos de corte alimentados com dietas contendo enzima ou probiótico
Provedor de dados: 89
Autores: Lima,ACF; Macari,M; Pizauro Júnior,JM; Malheiros,EB.
Este trabalho foi realizado para avaliar o efeito da adição de enzima e/ou probiótico, bem como do estresse calórico sobre a atividade de enzimas digestivas de frangos de corte aos 7, 14, 28 e 42 dias de idade. O delineamento experimental utilizado foi o inteiramente casualizado em parcelas subdivididas com 6 tratamentos primários, constituindo um esquema fatorial 6x2 (rações x temperatura) e 4 tratamentos secundários (idades de amostragem), com 2 repetições. Não foi verificado efeito significativo dos tratamentos sobre a atividade específica das enzimas, exceto para as atividades de amilase aos 14 dias e tripsina aos 28 dias de idade, nas quais a adição de enzima proporcionou maiores atividades. Já a idade de criação afetou significativamente todas as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzima; Probiótico; Frangos de corte; Atividade enzimática; Estresse calórico.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300002

Available Phosphorus Levels in Diets for Muscovy Ducks in Housing
Provedor de dados: 89
Autores: Costa,VR; Cruz,FGG; Rufino,JPF; Silva,AF; Freitas,BKM; Feijó,JC; Guimarães,CC.
ABSTRACT The present study aimed to determine ideal levels of available phosphorus for muscovy ducks in housing. Two hundred and forty muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized with treatments consisting of six nutritional plans that included the initial, growth and termination phases and differed in relation to available phosphorus levels, and four replicates of 10 muscovy ducks each. The birds had weekly performance evaluations, and after 90 days, eight birds (four males and four females) in each treatment were slaughtered for evaluation of carcass traits. Data collected were subjected to Tukey test at 5% of significance. Differences were not observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Cairinamoschata domesticus; Carcass; Mineral; Waterfowl.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200338

Avaliação da Farinha de Carne e Ossos na Alimentação de Frangos de Corte
Provedor de dados: 89
Autores: Faria Filho,DE; Faria,DE; Junqueira,OM; Rizzo,MF; Araújo,LF; Araújo,CSS.
Um mil quatrocentos e quarenta pintos de um dia, machos, foram utilizados com o objetivo de avaliar a utilização da farinha de carne e ossos (FCO) sobre o desempenho e rendimento de carcaça de frangos de corte. Foi utilizado o delineamento inteiramente ao acaso em esquema fatorial 2 x 2 x 2, com os fatores: níveis de inclusão da FCO (3 e 6%), tipos de FCO (37,51 e 41,58% de proteína bruta), valores de energia metabolizável da FCO conforme equações de predição sugerida pelo NRC (1994) ou tabela de Rostagno et al. (1994), mais um tratamento controle sem a inclusão de FCO, com quatro repetições de 40 aves cada. O consumo de ração e ganho de peso (GP) foram influenciados pela inclusão de FCO, sendo verificado maior GP quando a FCO não foi utilizada. As demais...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Energia metabolizável; Farinha de carne e ossos; Frangos de corte; Rendimento de carcaça.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100005

Avaliação da Polpa de Citros Peletizada como Material para Cama de Frangos de Corte
Provedor de dados: 89
Autores: Sorbara,JOB; Rizzo,MF; Laurentiz,AC; Schocken-Iturrino,RP; Berchielli,TT; Moraes,VMB.
O objetivo deste trabalho foi avaliar a utilização da polpa de citros peletizada (PCP) como cama de frango, bem como analisar a composição bromatológica desse material. O experimento foi constituído de 1.792 pintos de um dia-machos e dividido em duas fases: 1 a 21 e 35 a 49 dias. Foi utilizado o delineamento em blocos ao acaso, com quatro repetições, em esquema fatorial 2x2x2, sendo os fatores tipo de cama: PCP e maravalha x altura de cama: 7 e 10 cm x densidade: 10 e 14aves/m². Foram avaliados os parâmetros: gsnho de peso(GP), consumo de ração (CR), conversão alimentar (CA),viabilidade (V), incidência de lesões no coxim plantar e de calo de peito, matéria seca (MS) e pH da cama aos 21 e 49 dias. Para verificar as possíveis alterações bromatológicas na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composição nutricional da cama; Densidades em frangos de corte; Polpa cítrica; Tipos de cama.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300010

Avaliação das Propriedades do Ácido Nicotínico no Desempenho e no Balanço Térmico de Frangos de Corte Durante Estresse por Calor
Provedor de dados: 89
Autores: Ribeiro,AML; Mahmoud,H; Teeter,RG; Penz Jr,AM.
Foram oferecidas 4 doses de ácido nicotínico (AN) na água de beber de frangos de corte, a fim de estudar seu efeito no desempenho e na produção de calor em condições de estresse por calor (6 h de 35º C). As doses foram 15, 100, 330 e 1000 mg/L. Não houve efeito do AN nas doses usadas para ganho de peso, consumo de alimento, eficiência alimentar, consumo de água e temperatura retal. Foram observadas algumas alterações devido ao AN e estresse por calor nos parâmetros sangüíneos das aves. A produção de calor (kcal/h/peso metabólico) diminuiu com o uso de 100 e 1000 mg/L comparados com 15 mg/L. Nas dosagens usadas não foi observado efeito benéfico do AN no controle do estresse por calor.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácido nicotínico; Frangos de corte; Estresse por calor.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100004

Avaliação do Desempenho e Excreção de Cálcio em Duas Linhagens de Frangos de Corte, na Fase Inicial, Alimentados com Diferentes Níveis de Aminoácidos e de Cálcio
Provedor de dados: 89
Autores: Araújo,CSS; Artoni,SMB; Araújo,LF; Junqueira,OM; Borges,SA.
Dois experimentos foram realizados com o objetivo de avaliar os efeitos de diferentes níveis de aminoácidos e de cálcio sobre o desempenho e excreção de cálcio de duas linhagens de frangos de corte (Cobb e Avian Farms) na fase inicial de criação. Foram avaliados os dados de desempenho (consumo de ração, ganho de peso e conversão alimentar) e excreção de cálcio. Foram utilizadas 540 aves, em cada experimento, distribuídas em delineamento inteiramente casualizado, em esquema fatorial 3x2, ou seja, 3 perfis de aminoácidos (metionina, metionina+cistina, lisina e treonina - 100%, 125% e 150% dos níveis do NRC,1994) e 2 níveis de cálcio (75% e 100% dos níveis do NRC,1994), com 30 aves por repetição. Analisou-se o cálcio excretado das aves, e para tanto,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos; Cálcio; Desempenho; Frangos de corte; Linhagens.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200003

Avaliação do Metabolismo Nutricional em Poedeiras pela Técnica dos Isótopos Estáveis do Ccarbono (13C/12C)
Provedor de dados: 89
Autores: Carrijo,AS; Pezzato,AC; Ducatti,C.
Os isótopos estáveis do carbono que eram utilizados em estudos ecológicos e paleoecológicos apresentaram um incremento nos últimos trinta anos, na utilização em estudos dietéticos em animais. Entretanto, existem poucas informações sobre o padrão metabólico e sobre as taxas de turnover do 13C em aves. O presente experimento estabeleceu curvas de substituição e taxas de movimentação do 13C no ovo e no fígado de aves de postura adultas, pela substituição da ração comercial por dietas compostas de grãos dos ciclos fotossintéticos C3 e C4, durante 50 dias. A diferença no conteúdo isotópico do delta per mil do carbono-13 (delta‰ 13C) entre as duas dietas foi de 16,13‰. A taxa de substituição do 13C das dietas, nos tecidos, adequou-se num modelo exponencial,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbono-3; Carbono-4; Fracionamento isotópico; Isótopos estáveis; Metabolismo nutricional.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300003

Avaliação do perfil eletroforético das proteínas séricas em matrizes pesadas (Gallus Gallus Domesticus) da linhagem Avian Farm
Provedor de dados: 89
Autores: Hasegawa,MY; Fonteque,JH; Kohayagawa,A; Boretti,LP.
O objetivo do presente trabalho foi determinar o perfil eletroforético das proteínas séricas em matrizes pesadas (Gallus Gallus Domesticus) sadias, da linhagem Avian Farm. Foram utilizadas 15 matrizes com 63 semanas de idade, provenientes do município de Conchas, São Paulo. Utilizou-se o método de biureto para a obtenção dos valores da proteína sérica total e a separação das frações protéicas pela técnica da eletroforese em gel de agarose, e a leitura do filme realizada por densitometria em 520nM. Obteve-se um total de sete frações, sendo que a beta1 - globulina e beta2 - globulina encontradas não foram citadas pelos autores consultados na literatura. A fração pré-albumina foi identificada em apenas seis das 15 amostras examinadas. Observou-se em cinco...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eletroforese; Proteína; Matrizes pesadas; Galinha.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300004

Avaliação Macroscópica e Morfométrica do Oviduto de Codornas (Coturnix coturnix japonica) Quando Alimentadas com Diferentes Níveis de Proteína
Provedor de dados: 89
Autores: Artoni,SMB; Carneiro,APM; Giacomini,G; Moraes,VMB; Araújo,CSS; Araújo,LF.
Foram utilizadas doze codornas domésticas, divididas em três grupos de quatro aves cada. As aves receberam rações padronizadas contendo 16%, 20% e 24% de proteína, sendo alimentadas por um período de quinze semanas, quando foram pesadas e sacrificadas imediatamente. Após a abertura da cavidade abdominal e evisceração do trato gastrointestinal, os ovários e ovidutos foram dissecados e pesados. Com o auxílio de um paquímetro mediu-se o comprimento das partes do oviduto: infundíbulo, magno, istmo, útero e vagina e avaliou-se o número de pregas do magno e do istmo. Foram realizados cortes histológicos do magno, istmo e útero onde se obteve medidas das espessuras das camadas epitelial e glandular. Os dados foram submetidos a análise de variância (ANOVA) e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Codornas; Morfometria; Níveis de proteína; Oviduto.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300004

Avian cytokines in health and disease
Provedor de dados: 89
Autores: Wigley,P; Kaiser,P.
Cytokines are proteins secreted by cells that play an important role in the activation and regulation of other cells and tissues during inflammation and immune responses. Although well described in several mammalian species, the role of cytokines and other related proteins is poorly understood in avian species. Recent advances in avian genetics and immunology have begun to allow the exploration of cytokines in health and disease. Cytokines may be classified in a number of ways, but may be conveniently arranged into four broad groups on the basis of their function. Proinflammatory cytokines such as interleukin-6 and interleukin-1beta play a role in mediating inflammation during disease or injury. Th1 cytokines, including interleukin-12 and interferon-gamma,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytokines; Immunity; Infectious disease; Inflammation; Vaccination.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100001

Avian infectious bronchitis virus in Brazil: a highly complex virus meets a highly susceptible host population
Provedor de dados: 89
Autores: Brandão,PE.
Infectious bronchitis (IB) is a highly aggressive disease for poultry in terms of symptoms and economic losses, and the control of this disease is difficult if flocks are not protected against type-specific challenges by the Avian infectious bronchitis virus (IBV). This article summarizes data presented by the author at the Workshop on Infectious Bronchitis 2009 on IB and IBV, including future developments on the field.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IBV; Genealogy; Pathogeny; Epidemiology.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200008

Avian mycoplasmosis update
Provedor de dados: 89
Autores: Nascimento,ER; Pereira,VLA; Nascimento,MGF; Barreto,ML.
Avian mycoplasmas occur in a variety of bird species. The most important mycoplasmas for chickens and turkeys are Mycoplasma gallisepticum (MG), M. synoviae (MS), and M. meleagridis. Besides, M. iowe (MI) is an emerging pathogen in turkeys, but of little concern for chickens. Mycoplasmas are bacteria that lack cell wall and belong to the class Mollicutes. Although they have been considered extracellular agents, scientists admit nowadays that some of them are obligatory intracellular microorganisms, whereas all other mycoplasmas are considered facultative intracellular organisms. Their pathogenic mechanism for disease include adherence to host target cells, mediation of apoptosis, innocent bystander damage to host cell due to intimate membrane contact,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Airsacculitis; Diagnosis; Mycoplasma; Mollicutes; Poultry.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100001

Avicultura Industrial: Novos Conceitos de Materiais, Concepções e Técnicas Construtivas Disponíveis para Galpões Avícolas Brasileiros
Provedor de dados: 89
Autores: Tinôco,IFF.
Ao grande crescimento das fronteiras mercadológicas e ao extraordinário progresso científico verificado na avicultura industrial, contrapõe-se a pouca atenção que se deu, até recentemente, às técnicas de alojamento e, efetivamente, ao ambiente de criação das aves. Somente há questão de sete anos, com a perspectiva do processo de globalização que hoje movimenta a economia mundial, essa indústria passou a buscar, nas instalações e no ambiente, as possibilidades de melhoria no desempenho avícola e a redução dos custos de produção como forma de manter a competitividade. A produção de aves em alta densidade passou a ser imperativa e, dessa forma, a exigência de conforto térmico ambiental, que já havia crescido muito com o aumento da precocidade das aves,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Instalações avícolas; Materiais e técnicas construtivas para avicultura; Concepção arquitetônica de galpões; Ambiência avícola; Acondicionamento térmico de galpões avícolas; Novo conceitos de materiais para avicultura.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100001

Bacillus Coagulans Enhance the Immune Function of the Intestinal Mucosa of Yellow Broilers
Provedor de dados: 89
Autores: Xu,L; Fan,Q; Zhuang,Y; Wang,Q; Gao,Y; Wang,C.
ABSTRACT This experiment was conducted to investigate the effects of Bacillus coagulans on the growth performance and immune functions of the intestinal mucosa of yellow broilers. Three hundred and sixty one-day-old yellow chicks were randomly allocated to four treatments groups with six replicates of 15 chicks each. The broilers were randomly subjected to one of the following treatments for 28 days: control group (group1, fed a basal diet) and three treatments (group 2, 3, 4) fed the basal diet supplemented with 100, 200, or 300 mg/kg Bacillus coagulans , respectively). The results showed that for 28 days, compared with the control diet, the dietary addition of 200 mg/kg Bacillus coagulans significantly decreased the feed/gain ratio (F/G) (p&lt;0.05),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus coagulans; Yellow broilers; Growth performance; Intestinal mucosa immune function.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100115

Bacteriological and Histopathological Evaluation of Articulations of Chickens Diagnosed with Arthritis
Provedor de dados: 89
Autores: Marcon,AV; Oliveira,GF De; Caldara,FR; Garcia,RG; Matins,RA; Marcon,A; Crone,C; Assunción,ASA.
ABSTRAT Arthritis implies inflammation of the intra-articular structures and is one of the causes of condemnation in broilers. The disease is associated with infectious agents such as Staphylococcus aureus, which may pose a potential public health risk. This work was conducted with the objective to determine the occurrence of arthritis in broiler chickens, predominantly of bacterial staphylococcal origin and if there is a difference between the degrees of injury regarding the presence of the bacterium and the histological lesion. Sixty samples of chickens diagnosed with arthritis by Federal Inspection Service from commercial slaughterhouse were collected according to their severity (of mild and severe degree) and submitted to bacteriological and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious; Inflammatory; Public health; Staphylococcus aureus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200500

Bacteriological Characteristics of Fresh Ostrich Sausage (Linguiça)
Provedor de dados: 89
Autores: Nascimento,RS; Fonseca,ABM; Franco,RM; Miranda,ZB.
The aim of this study was to evaluate bacteriological characteristics and shelf life of three formulations of ostrich sausages (linguiças), only differing in lean meat percentage: Formula 1, 100% ostrich meat; Formula 2, 75% ostrich meat + 25% pork; and Formula 3, 50% ostrich meat + 25% pork + 25% chicken. All linguiças were vacuum-packed and stored at 5 ± 2ºC. Mesophilic and psychrotrophic bacteria, sulfite-reducing Clostridia, coagulase-positive Staphylococci, and Escherichia coli were enumerated and Salmonella spp were isolated and identified. Initial mesophilic and psychotropic bacteria counts were high. During storage time, sulfite-reducing Clostridia, coagulase-positive Staphylococci, and Escherichia coli counts never reached the tolerance limit...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ostrich meat; Bacteriological analysis; Vacuum-packing.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200151

Bacteriological investigation of microorganisms (Salmonella sp. and other Enterobacteriaceae) in common quails (Coturnix coturnix) submitted to different forced-molting procedures
Provedor de dados: 89
Autores: Teixeira,RSC; Cardoso,WM; Lopes,ES; Rocha-e-Silva,RC; Albuquerque,AH; Horn,RV; Salles,RPR.
The aim of this study was to investigate the presence of Salmonella in common quails submitted to forced molting. A total of 240 quails were divided at 40 weeks of age into four groups: CG (control, quails not submitted to molting); FM (fasting method); WM (fed wheat midds ad libitum); and ZM (zinc oxide method). From each group, 10 cloacal swabs, 10 fecal samples, and 20 egg samples were collected before molting (two weeks) and after molting (two weeks). The microbiological procedures for Salmonella spp. identification were performed in four steps. The agglutination test, using somatic and flagellar antigens, was used to confirm Salmonella-suspected colonies. According to the methodology applied, none of the samples was positive for Salmonella spp. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Forced molting; Zinc oxide; Fasting; Wheat midds diet.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100008

Bayesian Analysis for the Comparison of Nonlinear Regression Model Parameters: an Application to the Growth of Japanese Quail
Provedor de dados: 89
Autores: Firat,MZ; Karaman,E; Başar,EK; Narinc,D.
ABSTRACT This paper discusses the Bayesian approach as an alternative to the classical analysis of nonlinear models for growth curve data in Japanese quail. A Bayesian nonlinear modeling method is introduced and compared with the classical nonlinear least squares (NLS) method using three non-linear models that are widely used in modeling the growth data of poultry. The Gompertz, Richards and Logistic models were fitted to 499 Japanese quail weekly averaged body weight data. Normal prior was assumed for all growth curve parameters of the models with assuming Jeffreys' non-informative prior for residual variances. Models were compared based on the Bayesian measure of fit, deviance information criterion (DIC), and our results indicated the better fit of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gompertz; Logistic; Richards; Non-linear; Bayesian.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500019

BEAK TRIMMING BY INFRARED RADIATION OF LAYERS
Provedor de dados: 89
Autores: Pelicia,K; Garcia,EA; Santos,TA; Santos,GC; Vieira Filho,JA; Silva,AP; Moreira,J; Rabello,CBV; Garcia,RG.
ABSTRACT This study aimed at evaluating beak-trimming methods and intensities on the performance, beak length and uniformity, and egg parameters of commercial layers. During the rearing period, birds were distributed in randomized blocks, with a 2x3 factorial design + two treatments, consisting of beak trimming with infrared (IR) radiation (moderate or severe); three IR intensities (low: 42 nm, intermediate: 46 nm, or high: 52 nm); and two control hot blade (HB) beak trimming treatments (moderate or severe) with eight treatments and five replicates of 21 chicks each, totaling 840 birds. During the growing phase (second experiment) the factorial design was modified to 2 x 3 x 2 + 4, comprising two IR beak-trimming intensities (moderate or severe); three IR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative beak-trimming methods; Beak-trimming; Infrared radiation; Lohmann White layers.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100300

Beak trimming methods and their effect on the performance and egg quality of Japanese quails (Coturnix japonica) during lay
Provedor de dados: 89
Autores: Pizzolante,CC; Garcia,EA; Saldanha,ESPB; Laganá,C; Faitarone,ABG; Souza,HBA; Pelicia,K.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Beak trimming; Feathering; Performance; Quails.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100003

Beak-trimming methods and their effect on the performance of japanese quail pullets (Coturnix japonica)
Provedor de dados: 89
Autores: Pizzolante,CC; Garcia,EA; Saldanha,EAPB; Laganá,C; Batista,L; Deodato,Ap; Souza,ALP.
This study aimed at verifying if beak-trimming methods in Japanese quail pullets could optimize production by decreasing stress caused by cannibalism. A total number of 816 day-old Japanese quails was distributed in a completely randomized experimental design in a 2 x 3 factorial arrangement, with two beak-trimming ages (14 and 21 days of age) and three beak-trimming sizes (not trimmed, 1/3 trimmed, or 1/2 trimmed), and 4 replicates of 34 birds per replicate. Birds were submitted to the same management and feeding conditions. Weight gain, feed intake, feed conversion ratio, and mortality were evaluated. There was no significant effect of age at beak trimming on the evaluated parameters (P&gt;0.05), as well as no significant interaction between age at beak...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Japanese quail; Beak trimming; Performance; Pullet phase.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400002

Beauveria Bassiana Applied to Broiler Chicken Houses as Biocontrol of Alphitobius Diaperinus Panzer (Coleoptera: Tenebrionidae), an Avian Pathogens Vector
Provedor de dados: 89
Autores: Alves,LFA; Oliveira,DGP; Lambkin,T; Bonini,AK; Alves,V; Pinto,FGS; Scur,MC.
ABSTRACT Beauveria bassiana is naturally found in broiler chicken houses, and has been shown to be active against the lesser mealworm, Alphitobius diaperinus. The effectiveness of soil application of B. bassiana in emulsifiable oil-type formulation (Unioeste 4 isolate) to control the lesser mealworm in commercial poultry house was evaluated. The fungus was applied to the dirt floor of poultry house at 4.2 × 109 conidia/m2 (treated aviary) and the insect population was assessed before and 96, 146 and 216 days after application (DAA). In the control aviary, no treatment was performed to control those insects. Molecular techniques were used to confirm the presence of the fungus in dead A. diaperinus. Significant treatment effects were observed, with 56% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal production; Biological control; Entomopathogenic fungi.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400459

Behavior and performance of broiler strains reared under semi-intensive system with shaded areas
Provedor de dados: 89
Autores: Barbosa Filho,JAD; Silva,MAN; Silva,IJO; Coelho,AAD; Savino,VJM.
The matter of animal welfare has led to studies in order to evaluate alternative rearing systems for livestock in order to improve well-being. The semi-intensive system is an alternative method of rearing broilers in which the birds are kept in a poultry house and have free access to a pasture area during the day. It is known that ambient conditions may directly affect the behavior of birds reared in the semi-intensive system. Therefore, this research evaluated the behavior of four broiler strains reared under a semi-intensive system with a shaded area (provided by a black plastic screen - 50%) and the bioclimatic characteristics of this environment when compared with the non-shaded pasture. Thirty-five birds were reared in pens with 4.5 m² and 35 m² of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Broiler; Semi-intensive system; Welfare.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400003

Behavior of broiler chickens in four different substrates: a choice test
Provedor de dados: 89
Autores: Villagrá,A; Olivas,I; Althaus,RL; Gómez,EA; Lainez,M; Torres,AG.
The aim of this study was to determine the selection of bedding material by broiler chickens during the rearing period and whether the choice was determinant to their performing a specific behavior. To achieve this objective, a choice test was designed. A choice pen was constructed where birds could move freely around the four selected materials (straw, wood shavings, rice hulls and sand). Chickens were introduced in this pen in four groups of eight birds, three days a week for one hour per day and group, for four weeks. The location and the activity performed by each broiler were recorded every five minutes. Results showed a preference for sand compared with the other three substrates. However, differences between the behaviors performed in each bedding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Broiler; Choice test; Litter; Preference.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100010

Behavior of Layers under Different Light Sources
Provedor de dados: 89
Autores: Tavares,BO; Pereira,DF; Bueno,LGF; Silva,GF.
ABSTRACT Light is an important factor in the management of laying poultry. The ideal lamp spectrum that provides the best welfare conditions still needs to be determined. Wavelength and light intensity influence poultry behavior and their welfare. This study evaluated the influence of four lamps types with different light spectra on the behavior of seventy 52-week laying hens. Incandescent, fluorescent, and sodium and mercury vapor lamps were set in a different poultry house each and supplied similar light intensities. Layer behavior was video-recorded three times weekly using video cameras installed on the ceiling. The effects of different wavelengths emitted by the light sources on layer behavior were evaluated by the Kruskal-Wallis median test. Results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal behavior; Light; Animal precision.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400511

Bioavailability comparison of free and esterified lutein for layer hens
Provedor de dados: 89
Autores: Wu,L; Huang,X; Shi,K; Tan,R.
Lutein supplements are often used to pigment and enrich layer chicken eggs. This experiment was conduced to compare the bioavailability of free and esterified lutein, by depletion method. Forty chickens were randomly divided into two groups. After 2 weeks of washout period, when all birds were fed the same low lutein basal diet, the two groups were fed for another 2 weeks with diets supplemented with free lutein or esterified lutein. Two experimental diets were supplemented with the same amount of 15 mg lutein/kg. On day 0 (baseline) and days 3, 7, and 14, birds fasting morning plasma samples were collected and stored for lutein analysis by high performance liquid chromatography method (HPLC). Results showed that: 1) Plasma lutein concentration increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioavailability; Depletion method; Free lutein; Layer hens; Lutein ester.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200004

Biochemical Parameters and Histopathological Findings in the Forced Molt Laying Hens
Provedor de dados: 89
Autores: Mert,N; Yildirim,BA.
ABSTRACT The aim of this study was to evaluate the effects of forced molting using biochemical parameters and histopathological findings in laying hens. 36 Hyline W36 strain laying hens, 90 weeks old were chosen for this research. Eight of these chickens were randomly selected and placed in a cage as the control group before the molting program began. All the others 28 chickens were used for the forced molting program. Eight laying hens were slaughtered at the end of the molting program named as molting group. The remaining 20 hens were fed for 37 days, weighted and slaughtered when they reached the maximum egg production (80%) as postmolting group. Then, blood was analyzed for malondialdehyde, glutathione, catalase, glucose, calcium, phosphorus, albumin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Lipid peroxidation; Molting; Ovarium; Thyroid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400711

Bioimpedance as a Non-Invasive Method to Evaluate Eggs and Poultry
Provedor de dados: 89
Autores: Klein,DR; Vale,MM; Silva,LP; Santos,JPA; Branco,T; Fernandes,MO.
ABSTRACT The need to comply with animal welfare has motivated the research for non-invasive methods that allow the evaluation of poultry and eggs to be painless while providing accurate measurements. In this scenario, bioelectrical impedance was tested as a minimally invasive tool for sexing day-old chicks of two different chicken strains and for evaluating the quality of eggs submitted to different days of storage relative to their hatchability. The resistance and phase angle measured allowed the differentiation between chicken strains, but not between sexes. Eggs stored for seven days showed higher resistance and lower phase angle those stored for only one day. Although the bioimpedance method seems to be a promising method to evaluate egg and chick...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conductance; Day-old chicks; Egg storage; Reactance; Sexing.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200203

Black bone syndrome in chiken meat
Provedor de dados: 89
Autores: Baldo,GAA; Almeida Paz,ICL; Alves,MCF; Nääs,IA; Garcia,RG; Caldara,FR; Gavilan,CWS.
Black bone syndrome (BBS) affects poultry industry, and it is caused by the darkening of the tissue adjacent to the bone due to leak age of bone marrow contents during cooking. The objective of this experiment was to estimate BBS incidence in chicken thighs. A completely randomized experimental design, with two treatments (refrigerated or frozen) of 50 replicates each, was applied. The influence of BBS on meat quality was assessed according to bone lightness (*L), and meat appearance and sensorial characteristics. Lightness was measured using a colorimeter (Minolta® 410R) positioned on the proximal epiphyseal growth plate. Meat quality was evaluated after roasting by assigning scores for appearance (acceptable = no darkening, intermediate = little...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone darkening; Commercial processing plant; Meat quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400005

Blood serum components and serum protein test of Hybro-PG broilers of different ages
Provedor de dados: 89
Autores: Silva,PRL; Freitas Neto,OC; Laurentiz,AC; Junqueira,OM; Fagliari,JJ.
Blood serum samples of HYBRO PG broilers were analyzed, with 30 samples collected from 21-day-old broilers (G1), 30 from 35-day-old birds (G2), and 30 from 42-day-old birds (G3), with the aim of establishing normal values of some blood serum parameters. The activities of the enzymes gamma-glutamyl-transferase (GGT), aspartate aminotransferase (AST), creatine kinase (CK), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH), serum levels of total calcium, calcium ion, phosphorus, sodium, potassium, magnesium, chlorides, creatinine, uric acid, triglycerides, cholesterol, total protein, albumin, total and indirect and direct bilirubin, and electrophoretic profile of serum proteins in acrylamide (SDS-PAGE) and agarose gel were determined. There was no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Serum biochemistry; Serum protein test.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400004

Body Conformation and Internal Organs Characteristics of Different Commercial Broiler Lines
Provedor de dados: 89
Autores: Kokoszyński,D; Bernacki,Z; Saleh,M; Stęczny,K; Binkowska,M.
ABSTRACT The aim of the study was to determine body weight and dimensions, body conformation, length of the esophagus, length of intestine and its segments, as well as weight of internal organs and their proportions relative the body weight of broiler chickens from three commercial lines - Ross 308, Hubbard Flex and Hubbard F15. At the age of 42 days, Ross 308 chickens had significantly (p≤0.05) shorter trunk, but greater chest circumference and compactness index, as well as shorter esophagus and longer large intestine compared with Hubbard F15. The longest large and total intestine was found in Ross 308 broilers. Chicken genotype had no significant effect on the percentage of the main internal organs, i.e. liver, heart, proventriculus, gizzard, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body dimensions; Broiler; Digestive tract; Genotype; Internal organs.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100047

Body Morphometry and Development of the Digestive System of Grey Partridge (Perdix Perdix) Depending on Age and Gender
Provedor de dados: 89
Autores: Kokoszyński,D; Biegniewska,M; Wilkanowska,A; Saleh,M; Bernacki,Z; Stęczny,K; Kmiecik,M.
ABSTRACT The experiment used 100 grey partridges (Perdix perdix L.), which were reared first in confinement and later in aviaries. Partridges were lighter and had greater body dimensions at 36 weeks compared to 12 weeks except for trunk length. Older birds showed greater values (p&gt;0.05) of compactness and lower values of massiveness and long-leggedness. Significant differences were found for keel length in females. At 36 weeks, male and female partridges had significantly greater total intestinal length, males had significantly longer small intestine and rectum, and females were characterized by significantly longer caeca and greater (p&lt;0.05) intestine to body length ratio. Older birds had significantly greater gizzard weight and percentage and heart...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body dimensions; Gender; Grey partridge; Growth; Intestine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400695

BONE CHARACTERISTICS OF BROILERS SUPPLEMENTED WITH VITAMIN D
Provedor de dados: 89
Autores: Colet,S; Garcia,RG; Almeida Paz,ICL; Caldara,FR; Borille,R; Royer,AFB; Nääs,IA; Sgavioli,S.
ABSTRACTVitamin D is added to broiler diets to supply its physiological requirement for bone formation. The fast growth rate of modern broilers is often associated with poor bone formation. Increasing vitamin D supplementation levels and the use of more available sources have applied to try to prevent leg problems, to increase carcass yield, and to improve the performance of broilers. The present study evaluated three vitamin D supplementation levels (1) 3,500 IU (control); (2) control + 1,954 IU of 25-hydroxycholecalciferol; and (3) control + 3,500 IU of vitamin D in broiler diets supplied up to 21 days of age. The objective was to investigate if the vitamin D levels above the recommendations could reduce leg problems in broilers. In this experiment, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gait score; Tibial dyschondroplasia; Valgus; Varus; Pododermatitis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300325

Bone densitometry and calcium serum levels in chickens treated with filtered or unfiltered water
Provedor de dados: 89
Autores: Amoroso,L; Baraldi,ASM; Barreiro,FR; Pacheco,MR; Alva,JCR; Soares,NM; Pacheco,LG; Melaré,MC.
The aim of this study was to evaluate whether the drinking water of the School of Agricultural and Veterinary Sciences, UNESP, Jaboticabal, Brazil, affected bone mineral density and serum calcium levels of 14-, 21-, and 45-day-old broilers. Bone mineral density (BMD) of the tibiae was assessed using optical densitometry radiographic technique and serum calcium levels. Tibial BMD increased as broilers aged, and achieved its peak at 45 days of age. It was higher in the distal epiphysis of the birds that ingested filtered water (p&lt;0.05) compared with those supplied with unfiltered water. Therefore, it is concluded that filtered water promoted better bone quality in relative to those ingested unfiltered water.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Broilers; Serum calcium levels; Tibia; Water quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400013

Bone mineral density of tibae and femura of broiler breeders: growth, development and production
Provedor de dados: 89
Autores: Almeida Paz,ICL; Mendes,AA; Quinterio,RR; Vulcano,LC; Takahashi,SE; Garcia,RG; Komiyama,CM; Balog,A; Pelícia,K; Wescheler,FS; Scudeller,PSO; Piccinin,A.
The aim of this study was to follow-up the physiological variations in the development of the bone tissue, associating them with the egg production curve. This study was carried out in the facilities of the Faculdade de Medicina Veterinária e Zootecnia of the UNESP, Botucatu, Brazil. Twenty-three families of Ross broiler breeders were used, each family consisting of 13 females and 1 male, distributed in 23 pens of 5.0m² each. The management was that recommended by the genetic company manual (Agroceres Ross, 2003), with daily feeding until 6th week of age; and birds were fed according to a 5:2 schedule (5 days fed, 2 days of fasting) between 7 and 17 weeks of age, returning to daily feeding starting at 18 weeks of age. Birds did not receive afternoon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Bone density; Broiler breeders; Egg production; Shell quality.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200002

Bone mineral density: review
Provedor de dados: 89
Autores: Almeida Paz,ICL; Bruno,LDG.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Bone quality; Densitometry and poultry.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200001

Boron supplementation in broiler diets
Provedor de dados: 89
Autores: Fassani,EJ; Bertechini,AG; Brito,JAG; Kato,RK; Fialho,ET; Geraldo,A.
Boron supplementation in broiler feed is not a routine practice. However, some reports suggest a positive effect of boron on performance. This study assessed the effects of boron supplementation on broiler performance. Diets were based on maize and soybean meal, using boric acid P.A. as boron source. Six supplementation levels (0, 30, 60, 90, 120 and 150 ppm) were evaluated using 1,440 one-day old males housed at a density of 30 chickens in each of 48 experimental plots of 3m². A completely randomized block design was used with 8 replicates. Feed intake, weight gain and feed conversion were assessed in the periods from 1 to 7 days, 1 to 21 days and 1 to 42 days of age, and viability was evaluated for the total 42-day rearing period. No performance variable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal nutrition; Boron; Broiler; Chicken; Performance.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400004

Bovine meat and Bone Meal as an Economically Viable Alternative in Quail Feeding in the Final Phase
Provedor de dados: 89
Autores: Pizzolante,CC; Moraes,JE; Kakimoto,SK; Budiño,FEL; Móri,C; Soares,DF; Saccomani,APO.
ABSTRACT Bovine meat and bone meal (MBM) has been used as a low-cost protein source in corn- and soybean meal-based poultry diets. However, to date, no studies investigating the effect of the dietary inclusion of MBM on the performance of Japanese quails and on egg production costs were found in literature. In this study, 600 Japanese quails in lay were distributed in a completely randomized experimental design consisting of six treatments (replacement levels of soybean meal by MBM:0, 1, 2, 3, 4, and 5%) with five replicates of 20 birds each to investigate if MBM is a viable alternative to maintain or to improve the live and economic performances of these birds. Treatments consisted of a control diet, based on corn and soybean meal, with no inclusion of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuff; Performance; Costs; Levels; Egg quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500007

Brain and hepatic Hsp70 protein levels in heat-acclimated broiler chickens during heat stress
Provedor de dados: 89
Autores: Guerreiro,EN; Giachetto,PF; Givisiez,PEN; Ferro,JA; Ferro,MIT; Gabriel,JE; Furlan,RL; Macari,M.
In the present study we have investigated the effects of heat acclimation on brain and hepatic Hsp70 protein levels and body temperature of broiler chickens in response to gradual heat stress. Two groups of broilers were raised up to 47 days of age under distinct temperature conditions: thermoneutral (TN, according to bird age) or hot environmental (HS, 31-33°C). At 46 days of age, the birds reared at high ambient temperature were transferred to thermoneutrality conditions. After 18 h, these birds and the birds reared at thermoneutral temperature were submitted to gradual heat stress in a climatic chamber so that environment temperature was increased from 28 to 40ºC at a rate of 2ºC/h. Colonic temperature was measured using a thermometer sensor probe at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acclimation; Broiler chickens; Heat shock protein; Heat stress.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400002

Brazilian chicken meat production chain:a 10-year overview
Provedor de dados: 89
Autores: Nääs,IA; Mollo Neto,M; Canuto,SA; Waker,R; Oliveira,DRMS; Vendrametto,O.
Brazil is the world's largest broiler meat exporter. Health control, knowledge and technology, as well as the natural aspects of the country are pointed out as the keys for the success of that product in the market. Brazilian broiler production grew significantly in the last decade; it creates jobs and has a significant social role in Brazilian economy. This study aimed at evaluating the Brazilian broiler meat supply chain from 2000 to 2010 using the social network analysis (SNA). Data from governmental and private sources were organized and analyzed. The focus of this study was the broiler production supply chain segment involving the hatchery, the broiler farm, the feed mill, the processing plant, and the government. The inputs considered were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat market; Broiler meat supply chain; Social network analysis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100087

Breed and Sex Differences in the Gross Anatomy, Digesta pH and Histomorphology of the Gastrointestinal Tract of Gallus Gallus Domesticus
Provedor de dados: 89
Autores: Mabelebele,M; Norris,D; Brown,D; Ginindza,MM; Ngambi,JW.
ABSTRACT A study was conducted to investigate the influence of breed and sex in the gross anatomy, digesta and histology of Ross 308 broiler and Venda chickens. Chickens were slaughtered at 90 days of age and the pH of the digestive organs was measured immediately after slaughter. The digestive organ weights and lengths of Ross 308 broiler and Venda chickens were measured. Tissue samples of the duodenum, ileum and jejunal from each treatment group were collected and histologically examined. Higher (p&lt;0.05) gizzard pH values were observed in male and female of Ross 308 broiler and Venda chickens. The jejunal and ileal pH values were lower (p&lt;0.05) for Venda chickens than in Ross 308 broiler chickens. The absolute weights of the gastrointestinal tract,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Chickens crypt depth digestive system villi height.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200339

Breeder nutrition and offspring performance
Provedor de dados: 89
Autores: Calini,F; Sirri,F.
Vertical integration in poultry industry strongly emphasizes the importance of cost control at all levels. In the usual broiler production operations, the costs involved with the production of the hatching egg or the day old chick are negligible if seen in the perspective of the cost per kg of live bird. From a research point of view, anyway, the greatest attention is usually given to the performance of broiler breeders, and most of the research in the field is focused on the improvement of their relative performance, mainly in terms of saleable chicks produced per hen, while less attention has been given to the quality of the chick and to the improvement of its growth performances, even if these last parameters have an effective impact on the overall...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder; Progeny; Nutrition.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200001

Broiler breeder behavior and egg production as function of environmental temperature
Provedor de dados: 89
Autores: Pereira,DF; Nääs,IA; Romanini,CEB; Salgado,DD; Pereira,GOT.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder; Heat stress; Behavioral pattern.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100002

Broiler Chicken Meat Inspection Data in Brazil: A First Glimpse into an Animal Welfare Approach
Provedor de dados: 89
Autores: Souza,APO; Taconeli,CA; Plugge,NF; Molento,CFM.
ABSTRACT We aimed to study the potential use of carcass condemnation data of broiler chicken slaughterhouses in Brazil as indicators in an animal welfare monitoring program, and to identify points to be addressed to increase data reliability. Data from 2010 to 2015 in the states of Paraná (PR), Santa Catarina (SC) and Rio Grande do Sul (RS) were used. Fractures and bruising were recorded together, representing the most prevalent welfare problem, followed by skin lesion or inflammation. In PR, progressive increases on injury, arthritis, ineffective bleeding, and air sacculitis condemnation may reveal important welfare aspects. High correlation between AWI within PR was more commonly observed than in RS and SC, perhaps as a result of earlier implementation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal-based indicators; Carcass downgrading; Risk analysis; Welfare assessment; Welfare surveillance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300547

Broiler litter reutilization applying different composting concepts
Provedor de dados: 89
Autores: Sonoda,LT; Moura,DJ; Bueno,LGF; Cordeiro,DC; Mendes,AS.
Broiler litter reutilization consists in using the same bedding material to cover the house floor for several broiler flocks. This requires the litter to be treated in order to reduce the amount of microorganisms, according to international recommendations. The aim of this study was to evaluate two methods of broiler litter fermentation based on composting concepts and their effect on litter and the air quality during fermentation in small-scale broiler houses. The experiment was carried out in the Environmental Laboratory I of the School of Agricultural Engineering of the State University of Campinas, utilizing six small-scale houses. Litter from the same grow-out (one, two or three) was distributed in two experimental houses, where it was either piled or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermentation; Nitrogen; Waste treatment; Broiler.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300011

Broiler Pre-Slaughter Water Diet with Grass Lemongrass (Cymbopogon Citratus Stapf)
Provedor de dados: 89
Autores: Garcia,RG; Royer,AF; Nääs,IA; Borille,R; Santana,M; Caldara,FR.
ABSTRACT The pre-slaughter management is one of the predisposing factors to the reduction in the quality of the carcass and broiler meat, mainly for being a stressful condition. This study evaluates the inclusion of lemongrass (Cymbopogon citratus Stapf) in the water used in the diet of pre-slaughter broilers for the first time. The carcass and meat quality parameters were evaluated. The experiment was carried out in the poultry production of an experimental sector of the Federal University of Grande Dourados - UFGD. A total of 2,594 broilers were distributed in an entirely randomized design in a factorial arrangement of 3x2x2, with three different lemongrass concentrations in the form of infusion (0. 1 and 5 g/L), two sexes and two genetic strains (Ross...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat; Welfare; Phytotherapy; Pre-slaughter; Meat quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400725

Broiler Surface Temperature and Behavioral Response under Two Different Light Sources
Provedor de dados: 89
Autores: Araújo,FE; Garcia,RG; Nääs,IA; Lima,NDS; Silva,RBTR; Caldara,FR.
Light is an important environmental variable for the regulation and control of broiler behavior. Some light sources may also add heat to the rearing environment, and indirectly affect the heat exchange between the birds and the environment. This study aimed at investigation the surface temperature and behavioral response of broilers reared in an environment with monochromatic light emitted diode (LED). Broilers were reared inside commercial dark houses under two treatments: fluorescent or LED light sources. Bird surface temperature and behavior was monitoredfrom the first day of grow-out. The houses were virtually divided in four quadrants, and the variables were monitored in the geometric center of each quadrant. Surface temperature results were mapped,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monochromatic light; LED; Welfare; Broiler activity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200219

Broiler walking ability and toe asymmetry under harsh rearing conditions
Provedor de dados: 89
Autores: Baracho,MS; Nääs,IA; Bueno,LGF; Nascimento,GR; Moura,DJ.
Morphological asymmetry has been described as a potential broiler welfare indicator, for interpreting the birds' ability to cope with the challenges that may affect its growth. The objective of this study was to evaluate the use of morphological asymmetry data to estimate broiler walking ability and welfare.dBroilers werefed diets supplemented or not with vitamin D. Toes were measured when birds were 42 and 49 days old using digital caliper.the left and right sides of the following four bilateral traits (tarsometatarsus length, outer toe length, mid toe length, and back toe length) were measured twice on intact alive birds by two different researcherh. Data from right and left sides were compared in the two treatments using the Student t-test, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asymmetry; Welfare; Poultry.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300009

Broiler-Housing Conditions Affect the Performance
Provedor de dados: 89
Autores: Mesa,D; Muniz,E; Souza,A; Geffroy,B.
ABSTRACT In the last decades animal production has considerably increased worldwide to sustain an ever-growing human population. Among animal reared for consumption purposes, chickens are undoubtedly one of the most successful, mainly due to their rapid growth rate. The development of broiler farming has been accompanied in recent years by a substantial attention to animal welfare. This study is aimed at assessing the effects of different housing conditions on both feed conversion ratio and mortality of male broiler flocks through a large-scale study (more than 100 million birds) involving 977 farms belonging to one major producer. For this, we evaluated nine features of the housing system using a linear model with random effect. The features were:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickens; Sheds; Feed conversion ratio; Mortality; Welfare.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200263

Calcium and available phosphorus levels for laying hens in second production cycle
Provedor de dados: 89
Autores: Pelicia,K; Garcia,EA; Faitarone,ABG; Silva,AP; Berto,DA; Molino,AB; Vercese,F.
This experiment studied the effect of four calcium (3.0, 3.5, 4.0, and 4.5%) and four available phosphorus levels (0.25, 0.30, 0.35, and 0.40%) in the diet of semi-heavy commercial layers after molting. Hisex Brown® layers between 90 and 108 weeks of age were distributed in a completely randomized experimental design with a 4x4 factorial arrangement with 16 treatments of five replicates of eight birds each. mortality, egg production, feed intake, egg mass, average egg weight, calcium and phosphorus intake, feed conversion ratio (per dozen eggs and per kg eggs), eggshell percentage and thickness, eggshell strength, eggshell weight per surface area (ESWSA), yolk percentage and color, albumen percentage, albumen and yolk heights, and blood and excreta calcium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Egg quality; Nutritional requirements; Post-molting; Semi-heavy layers.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100007

Calcium levels and limestone particle size in the diet of commercial layers at the end of the first production cycle
Provedor de dados: 89
Autores: Pelicia,K; Garcia,E; Móri,C; Faitarone,ABG; Silva,AP; Molino,AB; Vercese,F; Berto,DA.
This study evaluated the effect of dietary calcium levels and limestone particle size distribution on first-cycle layer performance and egg quality. A completely randomized experimental design in 4x3 factorial arrangement (four Ca levels - 3.0, 3.5, 4.0, 4.5%; and three limestone particle size distributions - 100% fine, 50% fine and 50% coarse, 30% fine and 70% coarse) was applied, totaling 12 treatments with six replicates of eight birds each. The treatments did not influence the most of evaluated performance and internal and external egg quality parameters. However, limestone particle size distribution quadratically affected with percentage of defective eggs, with the lowest percentage obtained with the distribution 61.75% fine limestone and 38.25%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Limestone; Marketable eggs; Nutrition; Poultry.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200003

Campylobacter Jejuni Increases Transcribed Il-1 B and Causes Morphometric Changes in the Ileal Enterocytes of Chickens
Provedor de dados: 89
Autores: Fonseca,BB; Ferreira Júnior,A; Santos,JP dos; Coelho,LR; Rossi,DA; Melo,RT; Mendonça,EP; Araújo,TG; Alves,RN; Beletti,ME.
Abstract Campylobacteriosis is a worldwide foodborne zoonosis disease caused by Campylobacter jejuni. This microorganism is considered a commensal bacterium in chicken hosts. C. jejuni produces epithelial cell modifications and induces a cytokine gene transcription innate immunity repertoire. In the present study, we describe the invasiveness, morphological cellular modifications, and transcript level expressions of innate immune cytokines from C. jejuni-inoculated chicken ileum explants. C. jejuni was internalized by epithelial ileum cells at 15 minutes postinoculation (p.i.) and was detected intracellularly for 4hs (p.i.). Inoculated explants displayed significant increases in cell height. C. jejuni induced a significant elevation of Transforming Growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter jejuni; Chicken; Explants; TGF-b3; IL-1b.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100063

Campylobacter sp in organs and meconium of day-old broiler chicks derived from naturally infected breeder hens
Provedor de dados: 89
Autores: Fonseca,BB; Soncini,RA; Vieira,FL; Siqueira,MS; Guimarães,AR; Beletti,ME; Rossi,DA.
Campylobacter sp is an important agent that causes foodborne infection, particularly in food of poultry origin. Therefore, the efficient control of the transmission routes in chicken farms is of outmost importance to prevent it from spreading. In chicken farms, the main transmission route of this microorganism is horizontal, as the vertical route continues to be the object of inconclusive researches. The objective of this study was to verify the presence of Campylobacter sp in breeder hens, meconium, and other organs of day-old chicks derived from these breeders in order to obtain information on vertical transmission. Microbiological analyses were performed, using cloacal swabs from 279 breeder hens. Positive breeders were segregated, and the presence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter sp; Chickens; Vertical transmission; Epidemiology.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400010

Can the Fine Wheat Bran be a Betaine Source in Poultry Diets?
Provedor de dados: 89
Autores: Somensi,ML; Monteiro,ANTR; Marx,FR; Bockor,L; Vieira,MS; Kessler,AM.
ABSTRACT The effect of fine wheat bran (FWB) as a methyl donor source on performance, metabolism, body composition and blood traits of growing broilers was studied. Three hundred and twenty broilers from eight to 28 d of age, distributed in a randomized block design, with five treatments and eight replicates of eight animals each were used. The experimental diets were: NC, formulated with 72% of the Met+Cys requirement; Met, formulated with 85% of the Met+Cys equivalents by DL-methionine addition; Bet, formulated with 85% of the Met+Cys equivalents by anhydrous betaine addition; Fwb-, formulated with 72% of the Met+Cys requirement and 20% FWB; and Fwb+, formulated with 85% of the Met+Cys requirement and 20% FWB. Feed intake was reduced (p&lt;0.05) by FWB...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Byproduct; Feather synthesis; Methyl groups; Methionine; Nutrition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100321

Características de qualidade óssea e desempenho de avestruzes
Provedor de dados: 89
Autores: Almeida Paz,ICL; Mendes,AA; Balog,A; Vulcano,LC; Almeida,ICL; Takahashi,SE; Komiyama,CM.
Tipo: Info:eu-repo/semantics/report
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100012

Caracterização da degeneração femoral em frangos de corte por meio da densidade mineral óssea
Provedor de dados: 89
Autores: Almeida Paz,ICL; Mendes,AA; Balog,A; Almeida,ICL; Vulcano,LC; Komiyama,CM.
Tipo: Info:eu-repo/semantics/report
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100011

Carcass and cut yields and meat qualitative traits of broilers fed diets containing probiotics and prebiotics
Provedor de dados: 89
Autores: Pelicano,ERL; Souza,PA; Souza,HBA; Oba,A; Boiago,MM; Zeola,NMBL; Scatolini,AM; Bertanha,VA; Lima,TMA.
This study evaluated the use of different probiotics, prebiotics and symbiotics on the quality of carcasses and meat of broiler chickens. One hundred and eight day-old Cobb male broilers were used (n=108) in a completely randomized design according to a 3x3 factorial, with 3 probiotics in the diet (no probiotics, probiotics 1, probiotics 2) and 3 prebiotics in the diet (no prebiotics, prebiotics 1, prebiotics 2). There were nine treatments with 4 replicates and 3 birds per replicate. The results showed that the carcass and cut yields, color (L* - lightness, a* - redness, and b* - yellowness), pH, cooking losses, shearing force and sensory analysis were not affected by the use of different growth promoters at 42 days of age. It was concluded that growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carcass yield; Cut yield; Meat quality; Prebiotics; Probiotics.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300006

Carcass and parts yield of broilers reared under a semi-extensive system
Provedor de dados: 89
Autores: Faria,PB; Bressan,MC; Souza,XR de; Rossato,LV; Botega,LMG; Gama,LT da.
An experiment was carried out to evaluate carcass traits of male and female broilers of two genetic strains (Paraíso Pedrês and Pescoço Pelado), slaughtered at 65, 75, 85 and 95 days of age, and reared under a semi-extensive production system. The following parameters were evaluated: body weight at slaughter (BWs), carcass weight (CW), carcass yield (CY), parts yield, including breast, drumstick, thighs, back, neck, feet, wings, abdominal fat pad (AF), and giblets (gizzard, heart, liver). Paraíso Pedrês males presented higher BWs and CW. Paraíso Pedrês females had higher breast yield. Thighs and drumstick yields were higher in Pescoço Pelado males. Back yield was similar at 85 and 95 days of age, wing yield declined with age. AF yield was higher in Paraíso...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Carcass traits; Semi-extensive system.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300003

Carcass Traits and Immune Response of Broiler Chickens Fed Dietary L-Carnitine, Coenzyme Q10 and Ractopamine
Provedor de dados: 89
Autores: Asadi,H; Sadeghi,AA; Eila,N; Aminafshar,M.
ABSTRACT This study was conducted to evaluate the effects of coenzyme Q10, L-carnitine and ractopamine supplementation, alone and in combinations, on carcass traits and immune response of broiler chickens. Five hundred and twelve one-day-old Ross 308 male broiler chickens were randomly allocated into eight treatments with four replicates each. A 2×2×2 factorial arrangement was applied, with two levels of coenzyme Q10 (0 and 40 mg/kg), two levels of L-carnitine (0 and 200 mg/kg) and two levels of ractopamine (0 and 10 mg/kg). The birds were reared until day 42 of age under standard conditions. Blood samples were collected at the end of grower and finisher periods from the wing vein. Four birds per group were sacrificed at day 42 of age. Except for carcass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coenzyme Q10; L-carnitine; Ractopamine; Broiler chicken.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400677

Carcass Washing as an Alternative to Trimming - Is It Possible to Use Carcass Washing as an Alternative to Trimming in Commercial Broiler Slaughterhouses in Brazil?
Provedor de dados: 89
Autores: Santos,RA; Garcia,RG; Gandra,ERS; Burbarelli,MFC; Muchon,JL; Caldara,FR.
ABSTRACT This study aimed to evaluate visual contamination rates of carcasses of broilers slaughtered in establishments supervised by the Federal Inspection Service (SIF) and efficiency of carcass washing in replacement of trimming. The work was divided into three parts: analysis of partial and total carcass condemnation by contamination in hot (October to March) and cold (April to September) periods; evaluation of microbiological contamination before and after washing 800 carcasses (400 that did not go through washing x 400 that went through washing); and carcass washing test. For the test, twenty carcasses were evaluated in five treatments: carcasses without contamination - before washing; carcasses without contamination - after washing; contaminated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Condemnation; Poultry; Sanitation; Slaughter; Trimming.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200309

Cardiac Indicators, Serum Antioxidant Activity, and Growth Performance as Affected by Hawthorn Extract (Crateagus oxyacantha) in Pulmonary Hypertensive Chickens
Provedor de dados: 89
Autores: Ahmadipour,B; Kalantar,M; Kalantar,MH.
ABSTRACT Hawthorn has been traditionally used to improve blood circulation and medicating cardiac disorders as well as blood stasis and elimination of pulmonary hypertension. An experiment was conducted to evaluate the effect of different levels of hawthorn extract in the drinking water on cardiac indicators, serum antioxidant activity, growth and immunity of pulmonary hypertensive broilers reared at high altitude and prone to ascites. A total of 225 one-day-old unsexed broiler chicks (Ross308) were randomly assigned to 15 floor pens. A basal corn-soy based diet was formulated for all treatments. The treatments consisted of the addition of 0, 0.1, or 0.2 mL of hawthorn extract per liter of drinking water. Both levels of hawthorn flavonoid extract...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Hawthorn flavonoid extract; PHS.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300320

Cassava root meal as substitute for maize in layers ration
Provedor de dados: 89
Autores: Anaeto,M; Adighibe,LC.
The effect of replacing maize with graded levels of cassava root meal (CRM) as energy source in the diet of laying hens was evaluated during the eight weeks of feeding experiment on performance and cost benefits on layers. Forty-five Nera black laying hens of 24 weeks of age were allocated to five dietary treatments, with nine birds per treatment in a completely randomized design. CRM was used to formulate the diets at 0, 25, 50, 75, and 100%. The result showed that the feed intake of birds in the control group was significantly (p&lt;0.05) different from those fed the CRM diets. The average weight gain of layers receiving up to 50% CRM was similar to the control birds, but significantly different from layers fed 75 and 100% CRM. No mortality was recorded....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cassava root meal; Cost benefit; Laying hen; Performance.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200010

Central Opioidergic System Interplay with Histamine on Food Intake in Neonatal Chicks: Role of µ-Opioid and H1/H3 Receptors
Provedor de dados: 89
Autores: Jaefari-Anari,M; Zendehdel,M; Gilanpour,H; Asghari,A; Babapour,V.
ABSTRACT The present study was designed to examine the role of Opioidergic and Histaminergic systems on feeding behavior in 3-hour food deprived neonatal meat- type chicks. In experiment 1, chicks received intracerebroventricular (ICV) injection of (A) control solution, (B) α-FMH (alpha fluoromethyl histidine; 250 nmol), (C) DAMGO (µ-opioid receptor agonist, 125 pmol) and (D) α-FMH + DAMGO. Experiments 2-4 were similar to experiment 1, except chicken ICV injected with Chlorpheniramine (histamine H1 receptors antagonist; 300 nmol), famotidine (histamine H2 receptors antagonist; 82 nmol) and Thioperamide (histamine H3 receptors antagonist; 300 nmol) instead of the α-FMH. In experiments 5-8, birds ICV injected with the same procedure as experiments 1-4,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central opioidergic; Histamine; Food intake; Broiler chicken.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300595

CHANGE OF THE MTOR PATHWAY IN TISSUES OF OVERFED GEESE
Provedor de dados: 89
Autores: Han,C; Ye,F; Shen,X; Liu,D; He,F; Wei,S; Xu,H; Li,L; Liu,H.
ABSTRACTThis study aimed at examining the effect of overfeeding on the activity of the mTOR pathway in the liver and muscle tissues of Gang geese. Eighty healthy male Gang geese were reared under the same feeding conditions, and were divided at 14 weeks of age into a control group and an overfed group. All birds were slaughtered after three weeks of over feeding. Gene expression and protein content of several genes involved in the mTOR pathway were evaluated. The results showed that the gene expression of mTOR, raptor, and rictor, and the protein contents of mTOR and PI3K were higher in liver, breast muscle, and leg muscle of the overfed group than that of control group. However, the S6K expression level was clearly lower in the liver of the overfed group...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goose; MTOR pathway; Overfeeding; Tissues.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300293

Characterization and Differentiation of Chicken Mycoplasma Isolates Using 16S-23S Intergenic Spacer Region Sequencing
Provedor de dados: 89
Autores: Santos,FF; Li,J; Brandão,MDM; Machado,LS; Soares,NM; Nascimento,ER; Khan,MI; Pereira,VLA.
ABSTRACT The objective of this study was to identify the species and characterize the genetic relationships among mycoplasma isolates from commercial layer hen flocks using 16S-23S rDNA intergenic spacer region (IGSR) sequencing. Twenty-one isolates were obtained from samples collected from commercial layer flocks in four Brazilian states: São Paulo, Minas Gerais, Rio de Janeiro and Espírito Santo. The isolates were recovered from the São Paulo, Rio de Janeiro and Espírito Santo states. Eleven isolates were originated from tracheal swabs, five from shell gland swabs and five from ovary fragment collection. The 16S-23S rDNA IGSR of isolates were amplified by PCR, and the obtained products were subsequently sequenced. The consensus of each isolate was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycoplasma gallinaceum; Mycoplasma pullorum; Mycoplasma gallisepticum; Intergenic spacer region; 16S-23S.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200309

Characterization and Digestibility of Detoxified Castor Oil Meal for Japanese Quails
Provedor de dados: 89
Autores: Santos,PA dos; Ludke,MCMM; Ludke,JV; Rabello,CBV; Santos,MJB dos; Torres,TR.
ABSTRACT These experiments were performed to determine the chemical composition, coefficients of nutrient and energy metabolizability, amino acid composition, and cytotoxicity of different castor oil meals subjected to different detoxification processes and added to the diet of Japanese quails. In the trial, 180 46-d-old female Japanese quails were distributed according to a completely randomized design into five treatments and with replicates of six bird each. The treatments consisted of following detoxification methods of castor oil meal: Castor oil meal A (CMA) - recovery in alcohol at 80 °C for 20 minutes and drying at 80 °C; castor oil meal B (CMB) and C (CMC) - recovery in alcohol at 80 °C for 6 minutes, neutralization with 5% NaOH, and drying under...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative food; Poultry; Cytotoxicity; Digestibility; Energy.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000065

Characterization of Breast Meat Collected from Spent Lohmann Brown Layers in Comparison to Commercial Ross Broilers
Provedor de dados: 89
Autores: Limpisophon,K; E-tun,S; Koeipudsa,C; Charoensuk,D; Malila,Y.
ABSTRACT The objective of this study was to compare characteristics and properties of breast meat from spent Lohmann Brown layers (SP, 90 weeks old, n = 24) and those of commercial broilers (BR, 6 weeks old, n = 24). The breasts of both SP and BR were collected from a local processing plant, vacuum-packed in a plastic bag, and stored at -18ºC until further analyses. The SP showed a greater water-holding capacity, tougher and chewier texture (p&lt;0.05). Both raw and cooked SP breasts comprised the greater total collagen but lower soluble collagen than those of BR (p&lt;0.05). Muscle fibers of the SP, observed under scanning electron microscope, were small, with average fiber diameter of 37.85±1.40 μm, densely packed and surrounded by complex networks of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Muscle fiber; Physicochemical properties; Protein fractionation; Technological properties; Thermal properties.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300315

Characterization of heat waves affecting mortality rates of broilers between 29 days and market age
Provedor de dados: 89
Autores: Vale,MM; Moura,DJ; Nääs,IA; Pereira,DF.
Climate may affect broiler production, especially where there are heat waves, which may cause high mortality rates due to the heat stress. Heat wave prediction and characterization may allow early mitigation actions to be taken. Data Mining is one of the tools used for such a characterization, particularly when a large number of variables is involved. The objective of this study was to classify heat waves that promote broiler chicken mortality in poultry houses equipped with minimal environmental control. A single day of heat, a heat-shock day, is capable of producing high broiler mortality. In poultry houses equipped with fans and evaporative cooling, the characterization of heat waves affecting broiler mortality between 29 days of age and market age...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat shock day; Heat wave; Mortality; Productivity losses.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400010

Characterization of Hilly Chickens in Consideration of Climate Change Factors: Light and Heat
Provedor de dados: 89
Autores: Khan,MKI; Ali,M; Akter,MA; Zaman,S; Miah,G.
ABSTRACT Hilly chickens were characterized from January 2015 to September 2016 considering climate factors (light and heat). The experimental birds were divided into three groups (heat stress; light and control). The heat was generated in the chicken’s shelter by a black shaded light (Lantern) for two to three hours more after sunset. A lighting device (Lantern) was kept in the chicken’s shelter for the same period for increasing daylight duration. The individual chicken’s egg production, egg weight and mature live weight were studied from onset of egg production. It was observed that reddish brown hilly type chicken produced more (100.80 no/year/chicken) and larger sized (43.21g) eggs than spotted chicken (83.4 no/year/chicken and 40.46g). Among the three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Climatic factors; Microsatellite; Genetic diversity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400731

Characterization of selection effects on broiler lines using DNA fingerprinting
Provedor de dados: 89
Autores: Schmidt,GS; Hellmeister Filho,P; Zanella,EL.
The objective of this study was to evaluate the effect of selection for body weight on the genetic variability and diversity in broiler lines. Two paternal broiler lines (LL and LLc) were used. LL line was selected for 12 generations for growth and carcass and reproduction characteristics. The LLc line was established from LL line in 1985 and mated at random. Blood samples from six chickens per line were collected and used for molecular analysis. Also, a DNA pool was made for each line to compare effects between lines. Data were analyzed considering the collected information on the presence or absence of DNA bands. Band sharing scores were calculated using the DICE coefficient. The pattern of the 21 most representative bands was used. DNA fingerprinting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Fingerprinting; Molecular markers; Variability.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200005

Chelated Minerals and Limestone Particle Sizes on Performance and Bone Quality of Brown-Egg Layers
Provedor de dados: 89
Autores: Cordeiro,CN; Bastos-Leite,SC; Vasconcelos,FC; Goulart,CC; Sousa,AM; Costa,AC.
ABSTRACT This study aimed to evaluate productive performance, egg quality, and bone quality of commercial brown-egg layers fed diets containing organic and inorganic minerals and three limestone particle sizes. A total of 288 birds at 64 weeks of age were distributed in a completely randomized design in a 2 × 3 factorial arrangement (two mineral sources and three limestone particle sizes) and eight replicates. The experiment lasted 112 days, divided into four periods. The following treatments were tested: T1 = inorganic minerals + 100% fine limestone; T2 = inorganic minerals + 50% fine limestone + 50% coarse limestone; T3 = inorganic minerals + 100% coarse limestone; T4 = inorganic + organic minerals + 100% fine limestone; T5 = inorganic + organic minerals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying; Organic; Sources of calcium; Tibia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500035

Chelated minerals for poultry
Provedor de dados: 89
Autores: Vieira,SL.
Organic minerals have been subject of an increasing number of investigations recently. These compounds can be considered the most significant event regarding commercial forms of minerals targeting animal supplementation in the last decades. Minerals, especially metals, are usually supplemented in poultry feeds using cheap saline sources and have never required a lot of attention in terms of quality. On the other hand, definitions of organic minerals are very broad and frequently lead to confusion when decision-making becomes necessary. Organic minerals include any mineral bound to organic compounds, regardless of the type of existing bond between mineral and organic molecules. Proteins and carbohydrates are the most frequent candidates in organic mineral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Chelated mineral; Organic mineral; Poultry.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200001

Chemical composition and metabolizable energy values of corn germ meal obtained by wet milling for layers
Provedor de dados: 89
Autores: Albuquerque,CS; Rabello,CBV; Santos,MJB; Lima,MB; Silva,EP; Lima,TS; Ventura,DP; Dutra Jr,WM.
An experiment was carried out to determine the chemical composition, metabolizable energy values, and coefficients of nutrient digestibility of corn germ meal for layers. The chemical composition of corn germ meal was determined, and then a metabolism assay was performed to determine its apparent metabolizable energy (AME) and apparent metabolizable energy corrected for nitrogen (AMEn) values and its dry matter and gross energy apparent metabolizability coefficients (CAMDM and CAMGE, respectively). In the 8-day assay (four days of adaptation and four days of total excreta collection), 60 29-week-old white Lohman LSL layers were used. A completely randomized experimental design, with three treatments with five replicates of four birds each, was applied....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Coefficient of digestibility; Metabolizable energy.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100015

Chicken embryo utilization of egg micronutrients
Provedor de dados: 89
Autores: Vieira,SL.
Tipo: Info:eu-repo/semantics/article
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100001

Chicken meat quality as a function of fasting period and water spray
Provedor de dados: 89
Autores: Komiyama,CM; Mendes,AA; Takahashi,SE; Moreira,J; Garcia,RG; Sanfelice,C; Borba,HS; Leonel,FR; Almeida Paz,ICL; Balog,A.
This study aimed at evaluating the effect of different fasting periods and water spray during lairage on the quality of chicken meat. A number of 300 male Ross broilers were reared up to 42 days of age, and submitted to four pre-slaughter fasting periods (4, 8, 12, and 16 hours) and sprayed with water or not during lairage. Deboned breast meat was submitted to the following analysis: pH, color, drip loss, water retention capacity, cooking loss, and shear force. There was a significant effect (p &lt; 0.05) of fasting period on meat luminosity was significantly different, with the highest value obtained for 4-hour fasting, whereas no difference was found among the other fasting periods. Meat pH values were different among fasting periods when birds received...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Color; Meat; PH.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300008

Chicken Meat Submitted to Gamma Radiation and Packed with or without Oxygen
Provedor de dados: 89
Autores: Pelicia,K; Garcia,EA; Molino,AB; Santos,GC; Vieira Filho,JA; Santos,TA; Berto,DA.
The objective of this study was to evaluate the effects on gamma radiation levels on the physical and microbiological characteristics of chicken breast meat. A completely randomized experimental design in a 4x2x3 factorial arrangement was adopted. Treatments consisted of four radiation concentrations (0, 2, 4, or 8kGy), two package sealing methods (with or without vacuum), and three storage times (01, 07, or 14 days), with ten replicates each, totaling 240 chicken breast fillets. Packaging and radiation had no influence (p&gt;0.05) on chicken breast meat pH, water retention capacity, or presence of Salmonella spp. Breast fillets not submitted to radiation and vacuum packed presented higher water retention capacity (p&lt;0.05) than those radiated at 4kGy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry production; Vacuum preservation; Storage period; Ionizing radiation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200255

Chicken serologic response to Salmonella enterica serotype Typhimurium assessed by Elisa
Provedor de dados: 89
Autores: Oliveira,GH; Berchieri Jr,A; Montassier,HJ.
This study evaluated two enzyme-linked immunosorbent assays (ELISA) in the detection of chicken serologic response against Salmonella enterica sorotype Typhimurium. The assays have used as detecting antigen the soluble bacterial proteins of a non-flagellated strain of Salmonella Typhimurium (AgTM), and antibody conjugated to peroxidase or alkaline phosphatase. According to the results, optimal dilutions of antigen (concentration 5.49 mg/mL) and serum samples in both assays were 1:20,000 and 1:1,000, respectively. In such conditions, the ELISA/AgTM was able to detect serological response to Salmonella Typhimurium. Cross-reactions to Salmonella serotypes Gallinarum and Pullorum were seen, but not with other serotypes such as Enteritidis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; ELISA; Enzyme; Salmonella sp; Serology.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100008

Cholesterol levels and nutritional composition of commercial layers eggs fed diets with different vegetable oils
Provedor de dados: 89
Autores: Faitarone,ABG; Garcia,EA; Roça,R de O; Ricardo,H de A; Andrade,E N de; Pelícia,K; Vercese,F.
This experiment aimed at evaluating the effects of the supplementation of different vegetable oils at different levels to the diet of commercial layers on egg cholesterol levels and nutritional composition (proteins, total solids, lipids, and ashes) for 112 days. Birds were distributed according to a completely randomized experimental design with 10 treatments (T1 - control; T2 - inclusion of 2.5% rapeseed oil; T3 - inclusion of 2.5% canola oil; T4 - inclusion of 2.5% soybean oil; T5 - inclusion of 5% rapeseed oil; T6 - inclusion of 5% canola oil; T7 - inclusion of 5% soybean oil; T8 - inclusion of 2.5% rapeseed oil + 2.5% soybean oil; T9 - inclusion 2.5% canola oil + 2.5% soybean oil; T10 - inclusion of 2.5% rapeseed oil + 2.5% canola oil) of six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids; Cholesterol; Nutritional composition; Vegetable oils; Commercial eggs.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100006

Circulation of Major Respiratory Pathogens in Backyard Poultry and their Association with Clinical Disease and Biosecurity
Provedor de dados: 89
Autores: Batista,IA; Hoepers,PG; Silva,MFB; Nunes,PLF; Diniz,DCA; Freitas,AG; Cossi,MVC; Fonseca,BB.
SUMMARY Raising backyard birds is a common practice in Brazil, mainly in the countryside or suburban areas. However, the level of respiratory pathogens in these animals is unknown. We sampled two hundred chickens from 19 backyard flocks near commercial poultry farms and performed ELISA to Infectious Bronchitis Virus, avian Metapneumovirus, Mycoplasma synoviae and Mycoplasma gallisepticum. We evaluated the association between the predictive ability of ELISA and Hemagglutination-inhibition (HI)by comparing results from eight flocks positive to Mycoplasma gallisepticum on ELISA. Besides, we assessed essential biosecurity measures in the properties (multiple species birds, rodent control, hygienic conditions, and water quality for the bird`s consumption). We...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian Metapneumovirus; ELISA; Hemagglutination-inhibition; Infectious Bronchitis Virus; Mycoplasma.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100324

Citrus Peel Oils Supplementation in Broiler Diet: Effects on Performance, Jejunum Microflora and Jejunum Morphology
Provedor de dados: 89
Autores: Erhan,MK; Bölükbaş&amp;#305;,ŞC.
ABSTRACT This study was carried out to determine citrus peel oils (orange, lemon, bergamot) as food supplementation in different levels on performance, microflora and morphology in broilers. The trial consisted of 1-day-old male and female Ross 308 chicks (250 male 250 female). The study consisted of 10 groups in total and each group was replicated five times. Experimental diets were prepared by adding orange, lemon and bergamot peel oil levels (1,2 and 3 mL/kg) to basal diet. It was observed that the supplementation of citrus peel oils to the diet improved significantly the feed conversion rate. Especially the lowest feed intake and the best feed conversion ratio were received from broilers which were fed 3 mL/kg of orange peel oil. The study shows that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Citrus peel oil; Microflora; Performance; Villus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500015

Classification of coefficients of variation in experiments with commercial layers
Provedor de dados: 89
Autores: Faria Filho,DE; Dias,AN; Veloso,ALC; Bueno,CFD; Couto,FAP; Matos Júnior,JB; Barreto,KZO; Rodrigues,PA; Carneiro,WA.
This study aimed at determining a specific classification of coefficients of variation in experiments with commercial layers. Coefficients of variation were collected from papers published in Brazilian journals between 2000 and 2009 for performance, internal egg quality, and eggshell quality parameters. The coefficients of variation of each parameter were classified as low, intermediate, high, and very high according to the ratio between the median and the pseudo-sigma. It was concluded that the parameters used in experiments with commercial layers have a specific classification of coefficients of variation, and that this must be considered to evaluate experimental accuracy.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Experimental accuracy; Experimental statistics; Gallus domesticus; Poultry.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400006

Classification of the coefficients of variation of parameters evaluated in Japanese quail experiments
Provedor de dados: 89
Autores: Leal,DHV; Faria Filho,DE de; Oliveira,EMB.
The objective of this study was to design a classification range of the coefficients of variation (CV) of traits used in experiments with eggtype Japanese quails (Coturnix coturnix japonica). The journal Revista Brasileira de Zootecnia was systematically reviewed, using the key word 'quail' during the period of January, 2000 to 2010. The CV of feed intake (g/bird/d), egg production (%/bird/d), egg weight (g), egg mass (g/bird/d), feed conversion ratio per dozen eggs (g/dozen), feed conversion ratio per egg mass (g/g), and egg specific gravity (g/mL) were collected. For each parameter, CV were classified using the following median (MD) and pseudo-sigma (PS) ratio as follows: low (CV &lt; MD - PS), medium (MD - PS &lt; CV &lt; MD + PS), high (MD + PS &lt; CV...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix japonica; Experimental statistics; Experimental precision.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200014

Climate Change in Layer Poultry Farming: Impact of Heat Waves in Region of Bastos, Brazil
Provedor de dados: 89
Autores: Lamarca,DSF; Pereira,DF; Magalhães,MM; Salgado,DD.
ABSTRACT The region around the municipality of Bastos, state of São Paulo, accounted for about 7% of Brazilian egg production in 2015. In 2012, it experienced a heat wave that resulted in the death of approximately 500,000 hens, according to information released at the time. Considering the impact of heat waves on layer mortality, the objective of this study was to analyze how heat waves impact the layer farming in the region of Bastos, considering the climate change scenarios forecasted by the IPCC for the next years. This study was conducted in three stages: i) analysis of the IPCC reports to understand climate change scenarios; ii) analysis of historical temperature data in the region of Bastos; iii) analysis of how climate change, through heat waves,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Extreme event; IPCC; Laying hens; Mortality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400657

Climate Variability and Avian Cholera Transmission in Guangxi, China
Provedor de dados: 89
Autores: Qin,HY; Xiao,JH; Li,JX; Gao,X; Wang,HB.
ABSTRACT In recent years, Guangxi has become one of the most severely affected provinces by epidemics of avian cholera in China. To date, the major determinant climatic factors of the disease in the region have remained largely unknown, making it difficult to effectively target countermeasures for avian cholera surveillance and control. This study aimed to quantify the relationship between climatic variables and cases of avian cholera in subtropical areas of China. Data relating to local meteorological variables and notified cases of avian cholera were supplied by the relevant authorities between January 2006 and December 2015. Spearman correlation, co-linearity statistics and cross-correlation analysis were applied to the data, controlling for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian cholera; Climate variables; Guangxi; Time-series Poisson regression.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200211

Climatic Variation: Effects on Stress Levels, Feed Intake, and Bodyweight of Broilers
Provedor de dados: 89
Autores: Osti,R; Bhattarai,D; Zhou,D.
ABSTRACT Chickens tolerate a very narrow range of climatic variation, and therefore, it is essential to determine the most suitable climatic area and weather for broiler production in open-house systems. In this study, 3060 broilers were used as experimental birds to investigate the effects of seasonal differences and climatic variations on the growth performance of broilers reared in an open-house system. Birds were kept under various treatment models that differ in climate Tropic zone, sub tropic zone and temperate zones. Data were recorded during July-August as summer months and January-February as winter months. Collected data was analyzed using the least square procedure given by Harvey-1990. Significantly higher (p&lt;0.05) level of corticosteroids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Climatic variation; FCR; Open housing system; Stress level.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300489

Cobalt and vitamin B12 in diets for commercial laying hens on the second cycle of production
Provedor de dados: 89
Autores: Kato,RK; Bertechini,AG; Fassani,EJ; Santos,CD; Dionizio,MA; Fialho,ET.
The supplementation of cobalt and vitamin B12 in diets for commercial laying hens on the second production cycle was studied. Four hundred and eighty light commercial laying hens, Lohmann LSL, were used at initial phase of forced molting laying period. The trial was conducted in a randomized design. The plots were the treatments which were constituted by combination of five cobalt levels (0.00; 0.30; 0.60; 0.90 and 1.20ppm) and two vitamin B12 levels (without and with 10µ/kg), and the split-plots were four periods (21, 42, 63 and 84 days) during the second period of production, with 4 repetitions and 12 hens per experimental unit. Food and water were provided ad libitum and eggs were collected twice daily. Performance and egg quality parameters were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cobalt; Egg production; Laying hens; Nutrition; Vitamin B12.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100006

Cobre e Antibiótico como Promotores de Crescimento em Rações para Frangos de Corte
Provedor de dados: 89
Autores: Iafigliola,MC; Menten,JFM; Racanicci,AMC; Gaiotto,JB.
Foi realizado um experimento objetivando avaliar os efeitos de promotores de crescimento sobre o desempenho e a temperatura corporal de frangos de corte, no período de 1 a 42 dias de idade. Os tratamentos consistiram de uma ração basal não suplementada (Controle), ou suplementada com 200 mg de Cu/kg de sulfato cúprico pentahidratado (Sulfato), 75 mg de Cu/kg de citrato cúprico anidro (Citrato), 20 mg/kg de virginiamicina (VM), ou a associação Citrato + VM, em um experimento em blocos casualizados com seis repetições de 40 aves, criadas sobre cama reutilizada. Não se observou efeito de tratamentos na fase inicial. Na fase final os tratamentos não afetaram o consumo de ração e o ganho de peso, enquanto a conversão alimentar foi melhor para o VM comparado ao...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frangos de corte; Desempenho; Cobre; Virginiamicina; Temperatura corporal.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300002

Coccidiosis in japanese quails (Coturnix japonica): characterization of a naturally occurring infection in a commercial rearing farm
Provedor de dados: 89
Autores: Teixeira,M; Teixeira Filho,WL; Lopes,CWG.
A study about coccidiosis in Japanese quails was carried out in order to identify species of the genus Eimeria and characterize a naturally occurring infection in a commercial rearing farm. For this purpose, fecal exams, oocyst counting and morphological study were performed, besides necropsy and histopathology to confirm diagnosis. Three species of the genus Eimeria were found and identified as E. tsunodai, E. uzura and E. bateri. The natural infection was characterized as subclinical because of the mild and nonspecific clinical signs. Nevertheless, coccidiosis was considered an important disease because endogenous stages of the parasites and a high number of oocysts in feces were associated with intestinal lesions. The results suggest that such infection...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coccidiosis; Coturnix japonica; Japanese quails; Natural infection.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200010

Coconut Cake in Diets for Quail in the Laying Phase
Provedor de dados: 89
Autores: Moraes,SS; Pereira,AA; Almeida,VVS; Lima Júnior,DM; Silva,WA; Mariz,CBL; Vieira,GMN; Silva,WA; Moreno,GMB.
ABSTRACT Currently, agro-industrial by-products have increasingly been used in animal feeding, as they constitute an alternative source of nutrients for the animal diet and a way to simultaneously reduce environmental pollution. The objective of this study was to examine increasing levels of inclusion of coconut cake in Japanese quail diets in the laying phase on their production performance and egg quality. A total of 360 Japanese quails were allotted to eight treatments with nine replicates and eight birds per experimental unit, in a randomized-block design. Five diets were formulated: a diet without inclusion of the by-product; and diets containing 3, 6, 9, and 12% coconut cake. The experiment lasted 63 days, with evaluations occurring at every 21 days....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feed; Poultry; Production performance.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100306

Cold-Induced Ascites in Broilers: Effects of Vitamin C and Coenzyme Q10
Provedor de dados: 89
Autores: Nemati,MH; Shahir,MH; Harakinezhad,MT; Lotfalhian,H.
ABSTRACT We hypothesized that the supplementation of vitamin C (Vit. C) and coenzyme Q10 (CoQ10) alone or in combination could reduce the negative effects of cold stress in broilers. Four hundred male chicks were exposed for 24 h to cold stress (15 ºC) starting from 15d of age, while a positive control group (PC, 100 birds) was kept under normal temperature condition. The experimental groups under cold stress (four treatments in 5 replicates of 20 birds) were: negative control (NC, basal diet), Vit. C (basal diet + 300 mg/kg Vit. C), CoQ10 (basal diet + 40 mg/kg CoQ10) and Vit. C plus CoQ10 (basal diet + Vit. C+ CoQ10at above mentioned doses). Vit. C or CoQ10 supplementation were restored (p&lt;0.01) performance and lowered (p&lt;0.01) ascites mortality....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascites; Broiler; Coenzyme Q10; Cold stress; Vitamin C.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300537

Commercial laying hen diets formulated according to different recommendations of total and digestible amino acids
Provedor de dados: 89
Autores: Casartelli,EM; Filardi,RS; Junqueira,OM; Laurentiz,AC; Assuena,V; Duarte,KF.
An experiment was conducted to evaluate different commercial laying hen diets formulated based on recommendations for total and digestible amino acids. One hundred and twenty Lohmann LSL commercial laying hens aged 25 weeks were distributed in a completely randomized experimental design involving five replications of six birds in four treatments. Diet formulation on a total amino acid basis followed the recommendations of NRC (1994) and Rostagno et al. (2000), whereas formulation on digestible amino acids basis was according to Rostagno et al. (2000) and Degussa (1997) recommendations. The experimental period was divided into five periods of fourteen days. Performance parameters (egg production, feed intake, feed conversion, egg mass) were evaluated for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Layers; Nutrition; Performance; Poultry.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300007

Comparação de Meios de Enriquecimento e de Plaqueamento Utilizados na Pesquisa de Salmonella em Carcaças de Frango e Fezes de Aves
Provedor de dados: 89
Autores: Nascimento,MS; Berchieri Jr,A; Barbosa,MD; Zancan,FT; Almeida,WAF.
Este trabalho foi desenvolvido para avaliar, comparativamente, os caldos de enriquecimento Rapapport-novobiocina (RVN), selenito-cistinanovobiocina (SCN) e tetrationato-novobiocina (TN) e os meios para plaqueamento ágar Hektoen (HE), ágar MacConkey (MC), ágar Salmonella-Shigella (SS), ágar verde brilhante (VB) e ágar xilose lisina desoxicolato (XLD), utilizados no isolamento de Salmonella em carcaças de frango e fezes de aves. O procedimento bacteriológico consistiu das etapas de pré-enriquecimento, enriquecimento em caldos seletivos, plaqueamento, testes bioquímicos presuntivos e confirmação sorológica com soros polivalentes anti antígenos somáticos e flagelares de Salmonella.. As fezes foram experimentalmente contaminadas com 8 sorotipos de Salmonella...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Enriquecimento; Plaqueamento; Isolamento; Carcaça de aves; Fezes.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100012

Comparative Effect of Zinc Concentration and Sources on Growth Performance, Accumulation in Tissues, Tibia Status, Mineral Excretion and Immunity of Broiler Chickens
Provedor de dados: 89
Autores: Azad,SK; Shariatmadari,F; Torshizi,MAK; Chiba,LI.
ABSTRACT This experiment was conducted to investigate the effect of feeding different concentrations and sources of zinc (Zn) on the growth performance, tissue mineral status, bone morphology and immunity responses in 0-4-week broiler chickens. Four hundred and forty 1-d-old broiler chickens were assigned randomly to 11 dietary treatments with 4 cages per treatment and 10 broiler chickens per cage in a completely randomized design. Dietary treatments were: corn-soybean meal basal diet (negative control), basal diet supplemented with 5 g yeast/kg (yeast), and basal diet supplemented with 20, 50, or 80 mg of added Zn/kg as ZnSO4, Zn-Met, or Zn-yeast in a 3 x 3 factorial arrangement of treatments. The results showed that broilers fed Zn supplemented diets had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Growth performance; Bone characteristic; Immunity; Zinc.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200322

Comparative evaluation of dietary oregano, anise and olive leaves in laying Japanese quails
Provedor de dados: 89
Autores: Christaki,EV; Bonos,EM; Florou-Paneri,PC.
Aim of the present study was the comparative evaluation of the effect of ground oregano, anise and olive leaves as feed additives on performance and some egg quality characteristics of laying Japanese quails. A total of 189 Coturnix japonica quails (126 females and 63 males), 149 days old, were randomly allocated into seven equal groups with three subgroups of 9 birds each (6 females and 3 males). A commercial laying diet was fed to the control group. The remaining six groups were fed the same diet supplemented with oregano at 10 g/kg or 20 g/kg, anise at 10 g/kg or 20 g/kg and olive leaves at 10 g/kg or at 20 g/kg. The birds were offered feed and water ad libitum for a period of 29 days, while being kept under commercial conditions. During the experiment,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anise; Egg characteristics; Egg laying percentage; Olive leaves; Oregano.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200003

Comparative Evaluation of the Effects of Binzalkonium Chloride, Iodine, Gluteraldehyde and Hydrogen Peroxide Disinfectants against Avian Salmonellae Focusing on Genotypic Resistance Pattern of the Salmonellae Serotypes toward Benzalkonium Chloride
Provedor de dados: 89
Autores: Aksoy,A; El Kahlout,KEM; Yardimci,H.
ABSTRACT Using disinfectants in poultry houses is a common practice to ban the zoonotic pathogens like Salmonella. A major concern in using disinfectants is the emergence of bacteria strains that resist some disinfectants. This phenomenon is manifested in the resistance of some Salmonella serotypes against quaternary ammonium compounds. Such resistance is attributed to qacEΔ1 gene which may be possessed by some Salmonella serotypes. This work aimed to evaluate the resistance of Salmonella serotypes (S. Typhimurium, S. Infantis and S. Entiridis) against different disinfectants (benzalkonium chloride, iodine, gluteraldehyde and hydrogen peroxide). The effect of the disinfectants were evaluated by treatment of the bacteria with different concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disinfectants; PCR; Poultry; Resistance; Salmonella.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100301

COMPARATIVE EVALUATION OF THE PROTECTIVE EFFICACY OF DIFFERENT VACCINATION PROGRAMS AGAINST A VIRULENT FIELD STRAIN OF THE NEWCASTLE DISEASE VIRUS IN BROILERS
Provedor de dados: 89
Autores: Sarcheshmei,M; Dadras,H; Mosleh,N; Mehrabanpour,MJ.
ABSTRACT Despite the intensive vaccination programs used for controlling Newcastle disease (ND) in the Iranian poultry industry, outbreaks of ND have been reported in poultry farms. This study was conducted to evaluate the effectiveness of vaccines for the protection against ND infection and virus-shedding period of velogenic Newcastle disease virus (vNDV) field strain after different immunization schemes. Eight groups of commercial broiler chickens were used. Six groups were vaccinated with different vaccination programs using commercial live and inactivated ND vaccines. All groups, except for group 8, were challenged with a virulent field isolate (104EID50/bird) at 28 days of age. Clinical signs, mortality rate and gross lesions were investigated....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Newcastle disease virus; Vaccination program; Virus shedding period.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300363

Comparative Study of Three Different ELISA to Measure the Antibodies Against Infectious Bronchitis Virus in Vaccinated and Unvaccinated Broilers
Provedor de dados: 89
Autores: Cardoso,TC; Oliveira,C; Da-Silva,SEL; Ferreira,HL; Pinto,AA.
Broilers were spray-vaccinated (n=150) with H120 serotype at one-day-old, challenged after 28 days with M41 IBV serotype and after bled at day 28, 34 and 46 after challenged. The respective sera were tested by the indirect ELISA (I-ELISA), sandwich ELISA (S-ELISA), liquid phase blocking ELISA (LPB-ELISA) and the standard serum neutralization test (SNT). For this purpose, a total of 300 sera samples, 150 from non vaccinated and 150 from vaccinated broilers were titrated by all the serological methods and the correlation coefficients were determined. The correlation values (r) between LPB-ELISA x SNT, S-ELISA x SNT, I-ELISA x SNT found werer = 0.98, r = 0.79, and r = 0.74, respectively. Nevertheless, the r between LPB-ELISA x S-ELISA, LPB-ELISA x I-ELISA and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ELISA; Post vaccinal response; Infectious bronchitis virus; Broilers.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100010

Comparative Study on Carcass Traits, Meat Quality and Taste in Broiler, Broiler Breeder and Aseel Chickens
Provedor de dados: 89
Autores: Khan,U; Hussain,J; Mahmud,A; Khalique,A; Mehmood,S; Badar,IH; Usman,M; Jaspal,MH; Ahmad,S.
ABSTRACT Present study evaluated carcass and meat quality attributes of broilers, broiler breeders and Aseel chickens. Sixty birds from each chicken genotype (broiler, broiler breeder and Aseel chickens; five-wk-old broilers and 60-wk-old Aseel chickens and broiler breeders) were evaluated. Birds were maintained under similar environment for 21 days, and then slaughtered to analyze their carcass qualitative and organoleptic characteristics. No carcass yield differences were detected among genotypes. Aseel chickens had heavier neck, followed by broiler breeder and broiler (p&lt;0.0001). Higher liver (p&lt;0.0001), intestine (p&lt;0.0001), ribs and back (p=0.0014) yields were obtained in broilers than in broiler breeders and Aseel chickens. Females showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aseel; Breeder; Broiler; Carcass traits; Meat quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100316

Comparing the profitability of organic and conventional broiler production
Provedor de dados: 89
Autores: Cobanoglu,F; Kucukyilmaz,K; Cinar,M; Bozkurt,M; Catli,AU; Bintas,E.
Recently, organic broiler chicken production has received more attention worldwide. This study has carried out an economic analysis to compare the profitability of organic versus conventional growing systems per unit of broiler meat production. To achieve this goal, 400 slow-growing broiler chickens (Hubbard Red-JA) were reared in an organic production system, and the same number of fast-growing birds (Ross-308) in a conventional system. The profitability was deduced with an economic analysis that compared total costs and net income. Results showed that organic broiler meat can cost from 70% to 86% more with respect to variable and fixed costs when compared with conventional production. The main reasons for the higher cost of organic broiler meat were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Conventional; Organic; Net income; Total costs.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100013

Comparing the profitability of organic and conventional broiler production
Provedor de dados: 89
Autores: Cobanoglu,F; Kucukyilmaz,K; Cinar,M; Bozkurt,M; Catli,AU; Bintas,E.
Organic broiler chicken production has recently received more attention worldwide. This study carried out an economic analysis to compare the profitability of organic versus conventional growing systems per unit of broiler meat production. In this study, 400 slow-growing broilers (Hubbard Red-JA) were reared in an organic production system and the same number of fast-growing broilers (Ross-308) were reared in a conventional system. Profitability was deduced from an economic analysis that compared total costs and net income. Results showed that organic broiler meat can cost from 70% to 86% more with respect to variable and fixed costs when compared with conventional production. The main reasons for the higher cost of organic broiler meat were feed, labor,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Conventional; Organic; Net income; Total costs.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400010

Comparison between linear and nonlinear systems of feed formulation for broilers
Provedor de dados: 89
Autores: Dadalt,JC; Butzen,FM; Ribeiro,AML; Renz,SV; Kessler,A de M; Penz Júnior,AM.
Two experiments were simultaneously carried out to compare feed formulation models: a linear model for minimum cost with a nonlinear model for maximum profitability for one-to 42-d-old broilers. One-d-old male or female Cobb 500 broilers (n=2368) were allocated to one of the two trials according to sex. The experiments were performed simultaneously in an experimental poultry farm. Two housing densities were used: high density (HDH), with 14 birds/m2, and low density (LDH), with 10 birds/m2. The following treatments were evaluated: linear feed formulation and LDH (LF10); nonlinear formulation and LDH (NF10); linear formulation and HDH (LF14); and nonlinear formulation and HDH (NF14). A completely randomized design with four treatments of eight replicates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed efficiency; Nutritional strategies; Profitability.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100109

Comparison of chemical restraint techniques in ostrich (Struthio camelus)
Provedor de dados: 89
Autores: Ciboto,R; Cortopassi,SRG; Lopes,MAE; Carvalho,RC; Baitelo,CG.
Chemical restraint in ostriches is usually required for short-time interventions. Thus, this study established and evaluated intravenous anesthetics formulated from commonly used drugs in order to accomplish total restraint on this species and allow painful procedures to be performed. Thirty male and female ostriches weighing from 40 to 90 kg were randomly distributed into five groups. Animals in Groups I, II and III were given acepromazine (0.25 mg/kg i.m.) and those in Groups IV and V were given xylazine (1.0 mg/kg i.m.). The following drugs were administered intravenously 15 to 20 min later: Group I - propofol (4.0 mg/kg), Groups II and IV - ketamine (5.0 mg/kg) and diazepam (0.25 mg/kg), Groups III and V - tiletamine-zolazepam (3.0 mg/kg). All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anesthesia; Chemical restraint; Muscular relaxation; Ostrich.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200008

Comparison of free range broiler chicken strains raised in confined or semi-confined systems
Provedor de dados: 89
Autores: Santos,AL; Sakomura,NK; Freitas,ER; Fortes,CMS; Carrilho,ENVM.
The present study was carried out to compare the growth curve, performance and carcass yield of two broiler strains, Paraíso Pedrês (PP) and ISA Label (ISA), raised in confined or semi-confined systems. It was used a completely randomized design with five replicates, consisting of 20 and 29 birds in semi-confined and confined systems, respectively. Semi-confined birds had free access to pasture at 28 days of age. Performance data were recorded weekly by building growth curves as well as calculating the growth rate. After reaching the recommended body weight (2.5 kg), male birds were slaughtered for physicochemical analysis of carcass, parts and organs. Semi-confined PP and ISA birds showed higher growth potential, higher weight gain, lower feed intake and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth curve; ISA Label; Meat quality; Paraíso Pedrês; Raising system.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200004

Comparison of Gut Microbial Diversity in Beijing Oil and Arbor Acres Chickens
Provedor de dados: 89
Autores: Chen,ZM; Chang,WH; Zheng,AJ; Zhang,S; Cai,HY; Liu,GH.
ABSTRACT The Beijing oil (BJO) chicken is an autochthona Chinese breed which shows outstanding meat quality characteristics compared with fast-growing imported chickens such as Arbor Acres (AA) chickens. Gut microbial diversity has been shown to influence host factors such as energy and nutrient metabolism, immune response and fertility. Consequently, it is hoped that analyses into host microbial populations will ultimately help to improve the quality of associated meat products. Two distinct chicken breeds, Arbor Acres (AA) and Beijing oil (BJO), were selected to analyze the composition of the 16S rRNA gene V3-V5 hypervariable regions using high-throughput sequencing technology. Upon elucidation of gut-colonizing bacteria, the Firmicutes were observed to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beijing oil chicken; Arbor Acres chicken; Gut microbial diversity; High-throughput sequencing.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100037

Comparison of Mycoplasma gallisepticum Infection in Different Samples and Ages of Chicken Breeder Flocks
Provedor de dados: 89
Autores: Demirbilek,SK; Ardicli,Ö; Carli,KT.
ABSTRACT This study aimed to compare method-based and newly developed sample-based methods for Mycoplasma gallisepticum (MG) detection in different samples of breeder flocks suffering from respiratory disease problems by using culture, real-time PCR (rPCR) and ELISA from chicks and embryonated eggs. Overall, 450 samples of 19-day-old chicken embryo’s trachea, 450 samples of 8-day-old chicken tracheal swabs and 900 blood samples of 20-, 27-, 34-, 40- and 46-week-old breeder chickens from 5 flocks were sampled for 26 weeks, and were all tested for MG by culture, MG-rPCR and MG-ELISA. Culturing assays and rPCR were applied to 450 mixture samples from 19-day-old chicken embryo’s trachea and 450 tracheal swab samples (each pooled into groups of 3) from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Culture; Egg yolk; Mycoplasma gallisepticum; Real-time PCR; Tracheal swab.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200320

Comparison of National and International Standards of Good Egg Production Practices
Provedor de dados: 89
Autores: Sousa,GP; Pereira,DF; Watanabe,K; Cataneo,PF.
ABSTRACT Egg production is an important economic activity in Brazil, with about 697 million eggs produced annually. The conventional cage system is commonly used for egg production. However, there has been a growing concern for the welfare of laying hens around the world. In this context, many countries have issued laws, protocols, and other normative technical specifications to ensure the welfare of layers. This study aims at identifying similarities and differences between international standards and Brazilian protocols using the Comparative Law perspective. This article reports an analytical study of selected protocols, performing three analyses using the Comparative Law method. The research concludes that some items of the Brazilian protocols of good...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Animal welfare; Comparative Law; Legislation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400581

Comparison of Physicochemical and Functional Properties of Chicken and Duck Egg Albumens
Provedor de dados: 89
Autores: Chaiyasit,W; Brannan,RG; Chareonsuk,D; Chanasattru,W.
ABSTRACT The aim of this research was to investigate the physicochemical and functional properties of fresh and pasteurized chicken and duck egg albumens. The results showed that pasteurization of both chicken and duck albumens significantly decreased (p≤0.05) viscosity, but had no impact (p&gt;0.05) on pH or free sulfhydryl groups. Chicken albumen was shown to have higher (p≤0.05) foam expansion, but lower (p≤0.05) foam stability than duck albumen. Pasteurization decreased (p≤0.05) the foam expansion of both albumens while decreasing (p≤0.05) the foam stability only of duck albumen. Investigation of the gel properties showed that duck albumen has greater hardness and lower expressible water (p≤0.05) than chicken albumen. Pasteurization increased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg albumen; Egg white; Chicken egg; Duck egg; Protein functionalities; Gelling; Foaming.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100304

Comparison of Several Turning Frequencies During the Storage Period of Red-Legged Partridge (Alectoris rufa) Hatching Eggs
Provedor de dados: 89
Autores: González-Redondo,P; Martínez-Domínguez,AR.
ABSTRACT The effects of three egg-turning regimes during the pre-incubation storage period on egg weight loss, hatchability, embryonic mortality, chick weight at hatching and incubation length of red-legged partridge (Alectoris rufa) compared with unturned eggs were investigated. Two hundred eggs were allocated to four 50-egg batches stored at 15ºC and 80% RH that being turned one, four and 24 times a day or remaining unturned, respectively. Eggs were incubated at 37.8ºC and 55% RH during the first 21 days and at 37.5ºC and 75% RH until hatching. Fertility was 70.5% and a good hatchability performance was obtained, characterised by 81.6% hatchability of fertile eggs, and weight losses of 0.78% during storage and of 10.04% during the first 21 days of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg turning; Game farming; Hatchability; Red-legged partridge; Egg storage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300301

Comparison of Some Biomechanical Properties of Tibiotarsus in Four Different Feather Color Lines of 60-Day Old Female Quails
Provedor de dados: 89
Autores: Suzer,B; Petek,M; Tufekci,K; Arican,I; Abdourhamane,IM; Yildiz,H.
ABSTRACT This study aimed to compare some morphological and mechanical measurements of four different color female quails to contribute to the formation of the morphological database. Quails are the smallest farmed avian species which are becoming more important for the poultry industry. They are also used as experimental animals and are valuable birds for researches. Genetic factors are important determinants of bone strength. Thus, skeletal disorders may be reduced by breeding selection in quails. Forty female quails with four different feather colors, including wild, white, yellow, and black, were compared at 60 days of age. Each quail group contained ten individuals. A three-point bending test was performed with a custom-made testing machine designed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone strength; Feather mutation; Quail; Tibiotarsus.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200308

Comparison of Some Relative Gene Expressions in the Yolk Sac Membrane and Small Intestine of the Embryos in the Layer Hybrid and Pure Breeds
Provedor de dados: 89
Autores: Onbaşilar,EE; Erdoğan,M; Erol,S; Kahraman,M; Güngör,ÖF.
ABSTRACT Pure breeds are important due to the fact that they adapt well to poor husbandry conditions. However, gene expression of digestive enzymes and nutrient transporters of pure breeds and layer hybrids have not been studied yet. Therefore, this study was directed to detect the gene expression of digestive enzymes and nutrient transporters in the yolk sac membrane and small intestine of the embryos in layer hybrid and pure breeds. A total of 354 hatching eggs were collected from 29 wk old Denizli, Gerze and Lohman White (LW) breeder flocks. Twelve eggs from each genotype were selected at embryonic day 19 (E19) and day 21 (E21). APN, SI, PepT1, EAAT3, CAT1, B0AT, SGLT1 and GLUT5 mRNA expressions were evaluated in the yolk sac membrane (YSM) and small...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryo; Gene expression; Layer hybrid; Pure breed.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300435

Comparison of techniques for tibial dyschondroplasia assessment in broiler chickens
Provedor de dados: 89
Autores: Almeida Paz,ICL; Mendes,AA; Takita,TS; Vulcano,LC; Guerra,PC; Wechsler,FS; Garcia,RG; Takahashi,SE; Moreira,J; Pelícia,K; Komiyama,CM; Quinteiro,RR.
This study was carried out at Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, SP, Brazil, with the objective of evaluating the efficacy of four techniques in the assessment of tibial dyschondroplasia lesions in broiler chickens. Four hundred Cobb male chicks were reared from 1 to 39 days of age. At 39 days, forty birds were selected and tibial dyschondroplasia status was assessed by four different techniques: evaluation using the lixiscope, macroscopic examination, histological examination and bone mineral density assessment using optical radiographic densitometry. The efficacy of each technique to assess dyschondroplasia lesions in the tibial growth plate was determined in comparison to histology, which was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histology; Lixiscope; Macroscopic lesions; Optical radiographic densitometry; Tibial dyschondroplasia.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100005

Comparison of the Dietary Supplementation of Lactobacillus plantarum, and Fermented and Non-Fermented Artemisia Annua on the Performance, Egg Quality, Serum Cholesterol, and Eggyolk-Oxidative Stability During Storage in Laying Hens
Provedor de dados: 89
Autores: Lee,AR; Niu,KM; Lee,WD; Kothari,D; Kim,SK.
ABSTRACT Artemisia annua L. is a widely distributed medicinal plant and well-known for treating malaria due to the artemisinin content. We previously found enhanced antioxidant and antibacterial activities of Lactobacillus plantarum-fermented A. annua dried leaves in vitro. The present study compared the effects of the dietary supplementation of L. plantarum, fermented (FA) or non-fermented (NFA) A. annua on laying performance, egg quality, serum cholesterol, and egg yolk oxidative stability during storage in 40-weeks-old Hy-Line Brown layers. In total, 180 layers were randomly allocated into four treatments for 6 weeks: basal diet (CON), basal diet + 0.5% L. plantarum only (LO), basal diet + 0.5% NFA, and basal diet + 0.5% FA. Each treatment comprised...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemisia annua L; Egg quality; Lactobacillus plantarum; Laying hens; Malondialdehyde.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400311

Comparison of the effects of semi-refined rice oil and soybean oil on meat oxidative stability, carcass yield, metabolism, and performance of broilers
Provedor de dados: 89
Autores: Moraes,ML de; Ribeiro,AML; Kessler,A de M; Cortés,MM; Ledur,VS; Cura,E.
Two experiments (EXP 1 and EXP 2) were conducted to compare soybean oil (SO) and semi-refined rice oil (RBO) added to broilers diets. In EXP 1, 400 male Ross x Ross 308 broilers were reared in battery cages, and their performance was evaluated. A metabolism assay was performed. In EXP 2, 1344 broilers from the same strain were reared in floor pens with rice husks litter. In addition to performance, carcass yield and meat oxidative stability were evaluated. In both EXP, birds were distributed in a 2x4 factorial arrangement, with two types of oils (SO or RBO) and four oil inclusion levels (1%, 2.5%, 4%, or 5.5%). Two periods were considered: starter (1 to 21 days of age) and grower (22 to 42 days). In both EXP, oil type had no influence on starter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Carcass; Metabolism; Rice oil; Soybean oil; Performance.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300004

Comparison of the effects of several feed restriction periods to control ascites on performance, carcass characteristics and hematological indices of broiler chickens
Provedor de dados: 89
Autores: Boostani,A; Ashayerizadeh,A; Mahmoodian,Fard HR; Kamalzadeh,A.
This experiment was conducted to evaluate the effect of some feed restriction regimes on the performance, carcass characteristics and hematological values of broiler chickens. A number of 480 one-day-old Cobb broilers were distributed into 24 floor pens and reared for 42 days. A basal diet was formulated according to the NRC (1994) recommendations for starter (1-11 d), grower (12-28 d) and finisher (29-42 d) periods. The restricted birds were fed 8 h per day from 7 to 21 (R7-21d), 14 to 28 d (R14-28d) or from 21 to 35d (R21-35d), while the control birds were fed ad libitum. Birds and feed were weekly weighed, and dead birds were submitted to necropsy to determine the cause of death. At the end of experiment, blood samples were taken from 3 birds per pen,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascites; Broiler; Feed restriction; Hematological indices; Performance.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300006

Comparison of the Growth and Mineralization of the Femur, Tibia, and Metatarsus of Broiler Chicks
Provedor de dados: 89
Autores: Han,JC; Qu,HX; Wang,JG; Chen,GH; Yan,YF; Zhang,JL; Hu,FM; You,LY; Cheng,YH.
ABSTRACTThis study aimed at comparing the growth and mineralization of the femur, tibia, and metatarsus of male and female broiler chicks. On the day of hatch, 100 male and 100 female Ross 308 broiler chicks were transferred stainless cages with 10 birds per cage. On d 7, 14, 21, 28, 35, and 42, five males and five females were sacrificed and their femur, tibia, and metatarsus were collected. Results showed that the tibia was the heaviest and the longest and contained the highest content of ash and calcium (Ca) among the three leg bones. The femur had the greatest diameter. The weight, length, diameter, and ash weight of the femur, tibia, and metatarsus linearly increased with age. The ash, Ca, and phosphorus (P) content in the femur and the tibia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Mineralization; Calcium; Phosphorus; Broiler chick.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300333

Comparison of the Quality Adjusting of Nonlinear Models for Organs, Carcass and Body Components in Meat-Type (Coturnix Coturnix Coturnix) and Laying-Type (Coturnix Coturnix Japonica) Quail
Provedor de dados: 89
Autores: Grieser,DO; Furlan,AC; Ribeiro,PM; Zancanela,V; Del Vesco,AP; Gasparino,E; Zardin,AMSO; Marcato,SM.
ABSTRACT The objective of this study was to evaluate the adjustment quality of nonlinear models to data organs growth, carcass and body components of meat-type (Coturnix coturnix coturnix) and japanese laying-type (Coturnix coturnix japonica) quail. A total of 1350 quails from one to 42 d old were distributed in a completely randomized design, with five replicates each. To determine the organs growth (gut, heart, liver and gizzard), carcass and body components (wing, thigh and drumstick, back and breast), two quails per repetition were slaughtered weekly. The data were evaluated in function of different nonlinear models (Logistical, Brody, Richards, Von Bertalanffy and Gompertz). All models studied adjusted the data, differing in adjustment quality. Brody...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gompertz equation; Growth parameters; Breast; Number of interaction; Strains.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400701

Comparison of Three Temperatures for the Hatching Phase in the Artificial Incubation of Red-legged Partridge (Alectoris rufa) Eggs
Provedor de dados: 89
Autores: González-Redondo,P; Díaz-Merino,R.
ABSTRACT This study aimed at investigating the effects of three incubation temperatures during the hatching period on egg weight loss, hatchability, chick weight at hatching and length of the incubation period of red-legged partridge (Alectoris rufa) under artificial incubation. One hundred and fifty eggs obtained from a red-legged partridge game farm were randomly allocated to three batches of 50 eggs each. Eggs were incubated at 37.8ºC during the first 20 days, and subsequently at 37.0, 37.4 or 37.8ºC until hatching. Fertility was 74.7% and a good hatching performance was obtained, characterized by 85.7% hatchability, 9.1% egg weight loss after 20 days of incubation, 13.8±0.1 g chick weight at hatching, and 23.2±0.1 days incubation length. Hatchability,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Game farming; Hatching synchrony; Incubation temperature; Red-legged partridge.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100057

Compensatory water consumption of broilers submitted to water restriction from 1 to 21 days of age
Provedor de dados: 89
Autores: Viola,TH; Ribeiro,AML; Penz Jr.,AM.
A hundred and fifty male Ross 308 broilers were submitted to water restriction (WR) in different levels (0 to 40%) until 21 days of age. The birds received water ad libitum from 22 to 28 days of age and the compensatory consumption of water (CConW) was calculated as the difference in water intake between birds submitted and not submitted to WR. All WR groups showed a compensatory consumption of water, mainly during the first days of the ad libitum period. The water intake in such groups decreased as the birds adapted to the new condition. Higher water intake was observed in birds with 30 and 40% WR than in birds with 10% WR. Furthermore, chickens showed an unusual drinking and feeding behavior during the restriction period.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Compensatory water consumption; Water restriction.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400008

Complete replacement of corn by white or red sorghum in japanese quail feeds
Provedor de dados: 89
Autores: Freitas,ER; Raquel,DL; Nascimento,AJN; Watanabe,PH; Lopes,IRV.
This study aimed at evaluating the total replacement of corn by white or red sorghum and the inclusion or not of pigment in the diet on the performance and yolk color of Japanese quail eggs. In the trial, 210 Japanese quails were distributed according to a completely randomized experimental design consisting of five treatments with six replicates of seven birds each. Treatments consisted of Corn-based diet (C), white sorghum-based diet (WS), white sorghum-based diet + pigment (WSP), red sorghum-based diet (RS), and red sorghum-based diet + pigment (RSP). Feed intake, feed conversion ratio, egg production, and egg mass were no influenced by the treatments. However, paler egg yolks were produced when corn was replaced by sorghum. When red and white sorghum...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Yolk color; Egg production; Egg quality.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300016

Composição e Digestibilidade dos Aminoácidos das Sojas Integrais Processadas para Aves
Provedor de dados: 89
Autores: Café,M B; Sakomura,NK; Junqueira,OM; Malheiros,EB; Del Bianchi,M.
O presente trabalho foi realizado com o objetivo de determinar a composição em aminoácidos e os coeficientes de digestibilidade dos aminoácidos da soja integral extrusada, tostada e do farelo de soja reconstituído de óleo. Foi utilizada a metodologia da alimentação forçada (Sibbad, 1976) com galos adultos. Para o cálculo dos coeficientes de digestibilidade dos aminoácidos das sojas testadas, foram consideradas as perdas endógenas e metabólicas obtidas de galos em jejum. Os dados médios de digestibilidade verdadeira de todos os aminoácidos testados foram de 91,1% para a soja extrusada, 78,6% para a soja tostada e 90,5% para o farelo de soja. Os resultados obtidos permitem concluir que a digestibilidade dos aminoácidos da soja integral tostada foi inferior a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composição em aminoácidos; Digestibilidade de aminoácidos; Soja integral extrusada; Soja integral tostada.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100009

Consumption Pattern of Bromadiolone in Presence of Alternative Food by House Mice (Mus musculus) Infesting Poultry Farms
Provedor de dados: 89
Autores: Aristegui,E; Miño,MH; Mansilla,PR; Guidobono,JS; Cueto,GR.
ABSTRACT Poultry farms in Central Argentina are often infested by Mus musculus L., despite the regular application of the rodenticide bromadiolone. This failure may be explained by the consumption pattern of mice, which may prefer alternative foods available on the farms to bromadiolone baits. Here we examine the consumption pattern of bromadiolone in the presence of wheat by M. musculus infesting poultry farms compared with the laboratory CF1 mouse strain. Overall, the poultry farm mice had longer survival and lower total food consumption in comparison with the CF1 mice. On the first day of the experiment, rodents from both strains and sexes consumed bromadiolone in the same proportion as wheat. On the second day, female mice of both origins showed a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry farms; Mus musculus; Rodent control; Rodenticides.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100095

Control of airborne microbes in a poultry setting using Dioxy MP 14
Provedor de dados: 89
Autores: Mbamalu,O; Uebel,R; Meki,B.
In this study, Dioxy MP 14, a locally developed form of chlorine dioxide, was tested in a commercial chicken pen to determine its effectiveness as an airborne environmental sanitizing agent. The biocide was introduced via an overhead misting system with a variable dosing pump. The extent of airborne microbial control was determined with settle plates. Performance and mortality rate of the chickens in the experimental pen was compared to that in the control pen. Results show a decrease in airborne microbial load and a significantly higher egg productivity rate at a 5% level in the treated pen. However, no significant difference in mortality rates between the two pens was observed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Airborne microorganisms; Biocide; Chicken pen; Chlorine dioxide; Misting system.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100077

Control of the Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae) with entomopathogenic fungi
Provedor de dados: 89
Autores: Rezende,SRF; Curvello,FA; Fraga,ME; Reis,RCS; Castilho,AMC; Agostinho,TSP.
The beetle Alphitobius diaperinus (Panzer), considered a worldwide pest in the poultry industry, is difficult to control and it is a vector for pathogens. The objective of this study was to evaluate the biological control of the lesser mealworm, by strains of fungi Beauveria bassiana, Cladosporium sp. and Trichoderma sp. Larvae and adults of the A. diaperinus were inoculated with suspensions of conidia in the concentration of 10(7) conídia.mL-1. The B. bassiana isolate caused higher insect mortality as compared to Cladosporium sp. and Trichoderma sp. isolates, with the larvae being more susceptible than adults. The entomopathogenicity of B. bassiana was further evaluated with 200 larvae and 200 adults of A. diaperinus inoculated with suspensions 10(6),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alphitobius diaperinus; Beauveria bassiana; Cladosporium sp.; Ltry litter; Trichoderma sp.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200008

Corn and soybean meal metabolizable energy with the addition of exogenous enzymes for poultry
Provedor de dados: 89
Autores: Dourado,LRB; Sakomura,NK; Barbosa,NAA; Bonato,MA; Kawuauchi,IM; Fernandes,JBK; Costa,FGP.
Two metabolism assays were carried out to determine corn and soybean meal metabolizable energy when enzymes were added. In the first trial, 35 cockerels per studied feedstuff (corn and soybean meal) were distributed in a completely randomized experimental design with four treatments of seven replicates of one bird each. The evaluated treatments were: ingredient (corn and soybean meal) with no enzyme addition, with the addition of an enzyme complex (xylanase, amylase, protease - XAP), xylanase, or phytase. Precise feeding method was used to determine true metabolizable energy corrected for nitrogen balance (TMEn). The use of enzymes did not result in any differences (p&gt;0.05) in soybean meal TMEn, but phytase improved corn TMEn in 2.3% (p=0.004). In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amylase; Forced feeding; Phytase; Protease; Xylanase.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100008

Corn replacement by broken rice in meat-type quail diets
Provedor de dados: 89
Autores: Filgueira,TMB; Freitas,ER; Quevedo Filho,IB; Fernandes,DR; Watanabe,PH; Oliveira,AN de.
An experiment was conducted to evaluate the effects of broken rice inclusion as substitute for corn in the diet on the performance, carcass yield, and economic viability of meat-type quails between 7 and 49 days of age. A number of 288 quails was distributed according to a completely randomized design into six treatments with six replicates of eight birds each. Treatments consisted of increasing levels of broken rice (0, 20, 40, 60, 80 and 100%) in replacement of corn. Increasing levels of corn substitution by broken rice in the diet of 7- to 49-day-old meat-type quails did not affect feed intake, weight gain or feed conversion ratio (p&gt;0.05). Relative to carcass traits, the inclusion of broken rice in the diets did not influence (p&gt;0.05) dressing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuff; Coturnix coturnix; Kani rice; Rice by product.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400002

Corn texture and particle size in broiler diets
Provedor de dados: 89
Autores: Benedetti,MP; Sartori,JR; Carvalho,FB; Pereira,LA; Fascina,VB; Stradiotti,AC; Pezzato,AC; Costa,C; Ferreira,JG.
The objective of this study was to evaluate the effect of corn texture and the particle size on broiler performance, carcass yield, nutrient digestibility, and digestive organ morphometrics. In Experiment I, 720 male Cobb chicks were distributed in a completely randomized experimental design with a 2 x 3 factorial arrangement, consisting two corn textures (dented and hard) and three corn particle sizes, was applied, with four replicates of 30 birds each. Corn particle size was classified according to geometric mean diameter (GMD) as fine - 0.46 mm; medium - 0.73 mm, and coarse - 0.87 mm. In Experiment II, 120 broiler chicks were used to evaluate corn digestibility during the periods of 16 to 22 days and 35 to 41 days of age, using the method of total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass traits; Digestibility; GMD; Particle size; Performance.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400002

Correlation Analysis of Relative Expression of Apob, Adfp and Fatp1 with Lipid Metabolism in Daweishan Mini Chickens
Provedor de dados: 89
Autores: Decai,X; Zhiyong,Z; Bin,Z; Zhongcheng,H; Quanshu,W; Jing,L.
ABSTRACT Quantitative RT-PCR was applied to measure the relative expression levels of the adipose differentiation-related protein (ADFP) gene, fatty acid transport protein 1 (FATP1) gene and apolipoprotein B (ApoB) gene in subcutaneous fat, abdominal fat, liver and muscle at five growth stages (28, 49, 70, 91 and 112 d) to determine the effect of the expression ofthese genes on fat deposition in Daweishan Mini chickens.The relative expression of ADFP gene mRNA in the abdominal fat andthe liver was significantly different between 49 d and 70 d (p&lt;0.05). The relative ApoB gene expression on 91d was higher in the liver, followed by muscles,subcutaneous fat, and abdominal fat, and was significantly higher in the liver than in the other three tissues. FATP1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ADFP; FATP1; ApoB; Daweishan Mini chicken; Fat traits; RT-PCR.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100151

Correlations among behavior, performance and environment in broiler breeders using multivariate analysis
Provedor de dados: 89
Autores: Pereira,DF; Nääs,A; Salgado,DA; Gaspar,CR; Bighi,CA; Penha,NLJ.
Animal welfare issues have received much attention not only to supply farmed animal requirements, but also to ethical and cultural public concerns. Daily collected information, as well as the systematic follow-up of production stages, produces important statistical data for production assessment and control, as well as for improvement possibilities. In this scenario, this research study analyzed behavioral, production, and environmental data using Main Component Multivariable Analysis, which correlated observed behaviors, recorded using video cameras and electronic identification, with performance parameters of female broiler breeders. The aim was to start building a system to support decision-making in broiler breeder housing, based on bird behavioral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Behavior; Heat stress.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400001

Correlations between Breast Yield and Morphometric Traits in Broiler Pure Lines
Provedor de dados: 89
Autores: Erensoy,K; Noubandiguim,M; Cilavdaroglu,E; Sarica,M; Yamak,US.
ABSTRACT Broiler pure lines are valuable breeding species and morphometric traits are advantageous for the selection of breast yield since they could be applied practically and without any negative impact on welfare. In this study, live weight (LW), carcass weight and ratio (CW and CR), breast weight and ratio (BW and BR), abdominal fat weight and ratio (AFW and AFR), morphometric traits such as breast width, length and index (BWD, BL and BI) were investigated in broiler pure lines. The research material consisted of 3 dam (A1, A2 and A3) and 2 sire (B1, B2) pure lines of 42 days of age. LW, CW, BW, AFW, AFR, BR, BL, BWD and BI values were different between the two lines (p&lt;0.05). LW, CW, BW and BI were higher in sire lines. The relationship between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast index; Breast length; Breast width; Broiler; Pure-lines.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100314

Correlations between endogen amylin hormone and some hormonal, biochemical and bone parameters in pullets
Provedor de dados: 89
Autores: Guzel,S; Gunes,N.
The objective of this study was to assess the correlations of amylin (a pancreatic polypeptide hormone) with some hormonal, biochemical and bone parameters in pullets. Forty 18-week-old pullets were used. Plasma amylin, CT (calcitonin), 1,25 (OH)2 vitamin D (1,25 dihydroxycholecalciferol ), serum osteocalcin, glucose, ALP (alkaline phosphatase), cholesterol, and triglycerides, as well as weight, length and total volume of tibiotarsi were measured. Plasma amylin concentration was negatively correlated with serum cholesterol (p&lt;0.05) and triglycerides (p&lt;0.05) concentrations. Plasma amylin concentration was significantly and positively correlated with plasma calcitonin concentrations (p&lt;0.001). Serum ALP and plasma amylin concentrations were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amylin; Calcitonin; Alkaline Phosphatase; Tibiotarsus.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400006

Correlations Between Muscle Fibers Characteristics and Meat Quality Attributes of Biceps Femoris Muscle: a Comparative Study of 2 Distinctive Broiler Breeds
Provedor de dados: 89
Autores: Mehmood,W; Zhang,C.
ABSTRACT The current study was conducted to develop the correlations between muscle fiber characteristics and meat quality attributes in the biceps femoris muscle of Arbor Acres (AA) and Yellow-feathered chicken (YFC). A total of fourty pure breed birds of AA (n=20) and YFC (n=20) were used in the experiment. After slaughtering at their respective market age of slaughtering: AA 40 d and YFC 120 d, samples were collected for meat quality attributes and myosin ATPase staining for fiber types analyses. Meat quality attributes and muscle fiber characteristics i-e; diameter, cross-sectional area (CSA) and density of AA were significantly different from the YFC (p&lt;0.05). Type I fibers number percentage was significantly higher in YFC than AA, whereas CSA and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Muscle fibers; Arbor Acres; Yellow-feathered chicken; Meat quality; Correlations.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400300

Correlations between thermal environment and egg quality of two layer commercial strains
Provedor de dados: 89
Autores: Pereira,DF; Vitorasso,G; Oliveira,SC; Kakimoto,SK; Togashi,CK; Soares,NM.
Heat stress limits the productivity of laying hens, as reflected by egg production and egg quality. The present study aimed at showing the correlations between egg quality parameters and environmental variables recorded on the day eggs were laid and on the previous days. Birds were housed in battery cages in a commercial poultry house. Main component analyses were used to verify associations between environmental and production variables, and Pearson's linear correlation tests were used to further investigate those associations. Analyses were carried out separately for to layer strains, Dekalb® White and Hy-Line® w36, and the variables egg weight (g), eggshell weight (g), specific gravity (g/cm³) and eggshell percentage (%) were compared with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cage; Egg quality; Environment; Layer; Poultry house.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200002

Co-Supplementation of Dietary Seaweed Powder and Antibacterial Peptides Improves Broiler Growth Performance and Immune Function
Provedor de dados: 89
Autores: Bai,J; Wang,R; Yan,L; Feng,J.
ABSTRACT The feasibility of Laminaria japonica powder (LJP) combined with cecropin as a dietary supplement to enhance broiler growth performance and immune function was evaluated in this study. In total, 648 one-day-old Arbor Acres broiler chicks were randomly distributed into nine numerically-equal treatment groups: T1 (control group; fed a basal diet); T2 (fed the basal diet supplemented with 1% LJP);T3 (fed the basal diet supplemented with 300mg cecropin/kg); and T4,T5,T6,T7,T8 and T9, individually fed with the dietary supplemented with varying levels of LJP and cecropin). Compared with the control, dietary of LJP or cecropin supplementation slightly improved feed conversion ratio (FCR). However, the dietary supplementation of LJP combined with cecropin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cecropin; Laminaria japonica powder; Live Performance.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200308

CRF1/CRF2 and MC3/MC4 Receptors Affect Glutamate- Induced Food Intake in Neonatal Meat-Type Chicken
Provedor de dados: 89
Autores: Ahmadi,F; Zendehdel,M; Babapour,V; Panahi,N.
ABSTRACT Central glutamate, melanocortin and corticotropin systems have mediatory role on several physiologic functions in the brain, but their interactions on appetite regulation are not fully elicited. So, the aim of the current study was to determine interaction of the glutamate with melanocortin and corticotropin systems on food intake in 3-h food-deprived (FD3) neonatal meat-type chicken. In experiment 1, chicken intracerebroventricular (ICV) injected (A) phosphate-buffered saline (PBS), (B) glutamate (75 nmol), (C) glutamate (150 nmol) and (D) glutamate (300 nmol). In experiment 2, (A) PBS, (B) astressin-B (CRF1/CRF2 receptors antagonist, 30 µg), (C) glutamate (300 nmol) and (D) astressin-B+glutamate were ICV injected. Experiments 3-5 were similar to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glutamate; Melanocortin; Corticotrophin; Food intake; Neonatal chicken.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100322

Crude Glycerin and Energy Density of Diets for Growing, Pre-Lay and Pre-Peak Backcob Brown Egg-Laying Hens
Provedor de dados: 89
Autores: Avellaneda,Y; Ariza-Nieto,C; Afanador-Téllez,G.
ABSTRACT A total of 320 13-weeks-old pullets were weighed and randomly allocated to treatments comprised by four levels of crude glycerin (0, 3, 6 or 9%) and two levels of ME (metabolizable energy, difference of 100 kcal/kg) in the diets growing (14 to 17 weeks of age), pre-lay and pre-peak (low: 2750, 2800 and 2750 kcal/kg and high: 2850, 2900 and 2850 kcal/kg, respectively). During the study, body weight was registered until 30 weeks of age, feed intake, egg weight and egg-production for each repetition and for individual hens were measured every week. The information was analyzed through a completely randomized design with a 4x2 factorial arrangement. During the growing phase, hens that received low energy diets consumed more feed (p&lt;0.05), gained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed intake; Feed conversion; Transitional diets; Egg production.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200317

Crude protein and metabolizable energy levels for layers reared in hot climates
Provedor de dados: 89
Autores: Almeida,VR; Dias,AN; Bueno,CFD; Couto,FAP; Rodrigues,PA; Nogueira,WCL; Faria Filho,DE.
The objective of the present study was to evaluate the effects of different dietary crude protein (CP) and metabolizable energy (ME) levels on the performance, internal and external egg quality, and cloacal temperature of commercial layers reared in hot climate. In this trial, 100 commercial Hy-Line W-36 layers between 20 and 32 weeks of age were distributed according to a completely randomized experimental design with a 2 x 2 factorial arrangement, consisting of two CP levels (15 e 18%) and two ME contents (2700 and 3100 kcal/kg) with five replicates per treatment and 10 birds per replicate. Performance (feed intake, egg production, egg mass, and feed conversion ratio), internal (Haugh units and albumen and yolk percentage) and external (eggshell % and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermal homeostasis; Nutrition; Environmental temperature; Cloacal temperature.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300007

Crude protein equivalence value of a multi-enzyme product for 28- and 42-day-old broilers
Provedor de dados: 89
Autores: Malakzadegan,A; Zaghari,M; Khalaji,S; Shivazad,M.
In order to estimate the crude protein (CP) equivalence value of Natuzyme-p (NP) enzyme by using regression response equations, two experiments were carried out using Ross (308) broiler chicks. Graded levels of dietary CP (while amino acids levels were kept constant) and NP enzyme were used to derive the regression equation in the first experiment. Four levels of dietary CP and NP enzyme were fed to 160 feather-sexed male broiler chicks during the starter (0-28 d of age) and grower (28-42 d of age) period. Each diet was offered to four replicates of five chicks in a completely randomized design. Results obtained in experiment one failed to fit a regression equation between BW, dietary CP levels and NP enzyme. In experiment two, graded levels of CP changed...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Multi enzyme; Y equivalent value; Crude; Broiler.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400010

Cryptosporidium infection in ostriches (Struthio camelus) in Brazil: clinical, morphological and molecular studies
Provedor de dados: 89
Autores: Santos,MMAB; Peiró,JR; Meireles,MV.
Avian cryptosporidiosis has been reported in more than 30 species of birds. To date, the species infecting birds are C. baileyi, C. galli and C. meleagridis. In this study, the morphological, clinical and molecular characteristics of a Brazilian ostrich isolate of Cryptosporidium are described. The oocysts of this Brazilian isolate are larger and more elongated than those of Cryptosporidium previously reported in ostriches, which were morphologically similar to C. meleagridis. Morphological, biological and molecular analyses demonstrated similarity of this ostrich isolate with C. baileyi, suggesting that there are at least two Cryptosporidium species infecting ostriches; one with molecular, biological and morphological characteristics related to C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clinical signs; Cryptosporidium; Morphology; Ostriches; PCR-RFLP.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200008

Descriptive Anatomy of Hepatic and Portal Veins with Special Reference to Biliary Duct System in Broiler Chickens (Gallus gallus domesticus): A Recent Illustration
Provedor de dados: 89
Autores: Maher,MA.
ABSTRACT Chickens have a great participation in meat and egg production. The anatomical scientific data of poultry is important to support the recent researches either for illustrations in academic studies or clinically in diagnosis and treatment of some poultry nutritional diseases. The current investigation was performed on twenty broiler chickens of both sexes. The chickens were anaesthetized, slaughtered then the venous system was flushed with a normal saline to anatomically investigate the distribution of hepatic portal veins both intra and extrahepatic, as well as the hepatic venous and biliary duct systems. The fowl had two hepatic portal veins draining the gastrointestinal tract with its associated organs as spleen and pancreas. The left hepatic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biliary system; Chicken; Hepatic vein; Intrahepatic and Porta vein.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200344

Desempenho de Frangos de Corte Alimentados com Ovo em Pó
Provedor de dados: 89
Autores: Junqueira,OM; Araújo,LF; Araújo,CSS; Faria,DE; Laurentiz,AC; Dahlke,F.
Um experimento foi conduzido para estudar a adição do ovo em pó na dieta de frangos de corte no período de 1 a 28 dias, sendo dividido em duas fases (1 a 7 e 8 a 28 dias). No período de 1 a 7 dias, as aves receberam dietas contendo 0%, 5%, 10%, 15% e 20% de ovo em pó e de 8 a 28 dias de idade as aves foram distribuídas em um arranjo fatorial 2x5 (2 níveis de ovo em pó - 0% e 5% - e os 5 níveis da fase anterior). No período de 1 a 7 dias as aves do tratamento controle apresentaram melhor ganho de peso e as aves alimentadas com dietas contendo 20% de ovo em pó apresentaram menor ganho de peso e pior conversão alimentar. As aves deste mesmo tratamento apresentaram também menor peso e comprimento do intestino. Na segunda fase (8 a 28 dias) não houve interação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Frangos de corte; Ovo em pó.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100007

Desempenho de Poedeiras Comerciais Alimentadas com Levedura Seca (Saccharomyces Crevisiae) de Cana-de-Açúcar
Provedor de dados: 89
Autores: Maia,GAR; Fonseca,JB; Soares,RTRN; Silva,MA; Souza,CLM.
Essa pesquisa teve por objetivo avaliar o efeito da adição de levedura seca de álcool (LSA) à dieta de poedeiras. Foram utilizadas 120 poedeiras Isabrown com 33 semanas de idade, distribuídas em um delineamento estatístico de blocos ao acaso, com cinco tratamentos (0, 7, 14, 21 e 28% de levedura), quatro repetições e seis aves por unidade experimental. Rações isoprotéicas (18% PB), isoenergéticas (2.800 kcal EM/kg), isocálcicas (3,8% Ca) e isofosfóricas (0,38% Pd) foram formuladas à base de milho e farelo de soja. Os níveis de LSA não afetaram a produção galinha dia (PGD=94,71± 0,96%), peso dos ovos (PO=64,35± 0,85g), peso médio final das aves (PMF=1.872,07± 50,36g), ganho de peso das aves (GP=-52± 25,84g) e umidade das excretas (UE=75,85± 3,81%)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Levedura seca; Produção de ovo; Poedeiras comerciais.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200005

Desempenho Produtivo da Perdiz (Rhynchotus rufescens) Submetida a Rações com Diferentes Níveis Energéticos
Provedor de dados: 89
Autores: Moro,MEG; Tavares,FA; Lima,CG.
Este trabalho teve como objetivo definir o melhor nível energético na ração para perdizes na fase de reprodução, avaliando consumo de ração, produção e peso médio dos ovos e conversão alimentar. Os tratamentos foram três rações isoprotéicas (15%PB) com níveis de energia de 2650, 2800 e 2950 kcal EM/kg. Foram utilizadas 24 aves em fase de reprodução da espécie Rynchotus rufescens, com 10 meses de idade. O delineamento experimental foi inteiramente casualizado, com 3 tratamentos (níveis de energia) e 4 repetições, com um casal por parcela. Os resultados mostraram que não houve diferença significativa para consumo, mas houve efeito significativo positivo do nível de energia sobre o peso médio e a produção dos ovos. A conversão alimentar para os níveis de 2650...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimentação; Peso de ovos; Produção de ovos; Reprodução.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100002

Desenvolvimento de Órgãos da Digestão e Rendimento de Carcaça de Frangos de Corte de Diversas Origens Genéticas Criados com Bebedouros Pendular e Nipple
Provedor de dados: 89
Autores: Fernandes,LM; Vieira,SL; Baptista,CB.
O uso de linhas genéticas de diferentes fontes comerciais em programas de reprodução de frangos de corte permite produzir gerações comerciais mais bem adaptadas a realidades diversas e otimizar os potenciais de desempenho do frango de corte com os da reprodutora. Entretanto, a prática predominante no Brasil é o uso de pais e mães de mesma origem. O uso de bebedouros tipo "nipple" vem sendo difundido com a perspectiva de gerar benefícios ainda não comprovados inteiramente na prática. Esse estudo avaliou a evolução dos órgãos da digestão, o desempenho vivo e o rendimento de carcaça e das partes de frangos de corte de diferentes cruzamentos entre reprodutores machos de diversos cruzamentos entre linhagens comerciais (R, I, S, e H) com fêmeas também de origem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frango de corte; Linhagem; Rendimento de carcaça; Bebedouro; Órgãos da digestão.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100009

Desenvolvimento do Trato Gastrointestinal de Embriões Oriundos de Matrizes Pesadas de 30 e 60 Semanas de Idade
Provedor de dados: 89
Autores: Maiorka,A; Santin,E; Fischer da Silva,AV; Bruno,LDG; Boleli,IC; Macari,M.
O objetivo deste trabalho foi investigar o efeito da idade das matrizes pesadas sobre o desenvolvimento do trato gastrointestinal (TGI) dos embriões no terço final do período de incubação, bem como a utilização das reservas do saco vitelino nas 24 h pós-eclosão, em pintos alimentados ou em jejum. Foram utilizados ovos férteis da linhagem Cobb 500, oriundos de matrizes pesadas com 30 e 60 semanas de idade. O desenvolvimento do TGI (proventrículo+moela, segmentos do intestino delgado e saco vitelino) foi estudado entre o 17º e 21º dias de incubação (Experimento 1). Nas 24 h pós-eclosão foi pesquisado o efeito da presença ou não de alimento no lúmen intestinal sobre a utilização das reservas do saco vitelino (Experimento 2). Os achados deste trabalho...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Matrizes pesadas; Embrião; Incubação; Trato grastrointestinal; Saco vitelino.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200003

Detection and molecular characterization of infectious laryngotracheitis virus in laying hens in Brazil
Provedor de dados: 89
Autores: Villarreal,LYB; Brandão,PEB; Chacón,JLV; Doretto Junior,L; Ito,N; Gama,NS; Ishizuka,MM; Luchese,A; Buchala,F; Astolfi-Ferreira,CS; Ferreira,AJP.
Avian Infectious Laryngotracheitis, caused by Infectious Laryngotracheitis Virus (ILTV), has been reported for decades in Brazilian laying and broiler flocks. More recently, outbreaks have occurred in São Paulo State. This study reports the application of PCR and DNA sequencing targeted to the p32 gene of ILTV using laying chicken samples from Bastos, São Paulo, Brazil. Three out of four field samples were positive by PCR. DNA sequencing of two samples evidenced homology of the amplified fragments with the p32 gene of ILTV. The results definitely confirmed the presence of ILTV in the birds during the outbreak. Further studies are needed to establish the sources of infection and to determine whether the detected virus was originated from vaccine or field...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian infectious laryngotracheitis; Brazil; P32; PCR; Sequencing.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400011

Detection and transfer of antimicrobial resistance gene integron in Salmonella Enteritidis derived from avian material
Provedor de dados: 89
Autores: Okamoto,AS; Andreatti Filho,RL; Rocha,TS; Menconi,A; Marietto-Gonçalves,GA.
The expansion of global poultry production has increased the need to reduce or control the agents responsible for economic losses, including Salmonella spp. These bacteria are also of public health concern due to their potential to cause food poisoning, and, more recently, due to the antimicrobial resistance presented by these bacteria. Molecular biology is an important tool currently used in the diagnosis and research studies of main poultry diseases. The present studied analyzed 100 samples of Salmonella Enteritidis (SE) isolated from avian material aiming at detecting the class 1 integron gene, Integroninvolved in antimicrobial resistance, by means of polymerase chain reaction (PCR), and comparing it with plate inhibition test. Subsequently, SE samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Integron; Gene transfer; Resistance to antimicrobials; Salmonella Enteritidis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300009

Detection by Rt-Pcr and Molecular Characterization of Tremovirus A Obtained from Clinical Cases of Avian Encephalomyelitis (AE) Outbreaks in Brazil
Provedor de dados: 89
Autores: Torre,D De la; Nuñez,LF; Parra,SHS; Astolfi-Ferreira,CS; Ferreira,AJP.
ABSTRACT This study determined the presence of Tremovirus A as the possible agent related to Avian Encephalomyelitis in broiler chicks from the states of São Paulo (SP) Paraná (PR), Goiás (GO), Santa Catarina (SC) and Rio Grande do Sul (RS), between the years 2006 and 2015. Samples of the nervous, digestive, respiratory, immune, and renal systems, plus muscular organs from broiler chicks with neurological problems such as ataxia and muscle tremors, and four (4) commercial vaccines as positive control, were tested by reverse-transcriptase (RT-PCR) amplification and DNA sequencing. A highly conserved region (P1) of the viral genome, was used to amplify a segment which encodes a structural protein VP4. Out of 112 samples, 46 were positive (42%) for Tremovirus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Tremovirus A; Avian Encephalomyelitis; Detection; Molecular characterization.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300527

Detection of CD4+ and CD8+ lymphocytes in the intestine of broiler chicks treated with Lactobacillus spp. and challenged with Salmonella enterica serovar Enteritidis
Provedor de dados: 89
Autores: Noujaim,JC; Andreatti Filho,RL; Lima,ET de; Okamoto,AS.
The expression of immune response as a leukocytic infiltrate by CD4+ and CD8+ cells in the epithelium and in the intestinal lamina propria of chicks fed Lactobacillus spp or cecal microflora (CM) and experimentally challenged or not with Salmonella enterica serovar Enteritidis (SE) was studied using immunohistochemistry. Three hundred and twenty day-of-hatch broiler chicks were divided into four groups of 80 birds each and orally received L. reuteri, L. salivarius, L. acidophilus, or CM. Each group was subdivided into four subgroups of 20 birds each, classified as follows: a subgroup did not receive any oral treatment (negative control), subgroup treated with L. spp or CM, subgroup treated with L. spp or CM and challenged with SE, and subgroup only...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Immunohistochemistry; Lymphocytes CD4+ and CD8+; Probiotic; Salmonella.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300008

Detection of Mycoplasma gallisepticum in dead captive psittacines in Belo Horizonte, Brazil
Provedor de dados: 89
Autores: Gomes,AM; Costa,LL; Vilela,DAR; Marques,MVR; Carvalhaes,AG; Marin,SY; Costa,MP; Horta,RS; Resende,JS; Martins,NRS.
Mycoplasma gallisepticum (Mg) infection of wild native Brazilian psittacines (Psittaciformes) which died of any cause during sorting, rehabilitation, or conservation, was investigated by PCR. Two previously described PCR methodologies using Mg specific primers were employed for the analyses of 140 swab samples (cloaca, trachea, or palatine cleft). Average positive Mg detection in cloacal swabs was 51.9%, with 80.0% (n=5) of Blue-and-yellow Macaws (Ara ararauna), 60.0% (n=3) Dusky Parrots (Pionus fuscus), 52.5% (n=59) Amazon Parrots (Amazona aestiva), 50.0% (n=2) Orange-winged Parrots (Amazona amazonica), 50.0% (n=2) Jandaya Parakeetsor Jandaya Conures (Aratinga jandaya), 0% (n=2) Golden Conures or Golden Parakeets (Guarouba guarouba), and 0% (n=2) Hyacinth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazona aestiva; Amazona amazonica; Anodorhynchus hyacinthinus; Aratinga jandaya; Brazilian psittacine fauna; Guarouba guarouba; Mycoplasma gallisepticum; PCR; Pionus fuscus; Psittaciformes; Psittacidae.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200001

Detection of Salmonella spp. by Conventional Bacteriology and by Quantitative Polymerase-Chain Reaction in Commercial Egg Structures
Provedor de dados: 89
Autores: Moraes,DMC; Duarte,SC; Bastos,TSA; Rezende,CLG; Leandro,NSM; Café,MB; Stringhini,JH; Andrade,MA.
Abstract Conventional bacteriology techniques and quantitative polymerase-chain reaction (qPCR) were applied to the eggshell, albumen, and yolk of washed and unwashed commercial white and brown eggs, to detect Salmonella spp. Pooled samples of eggshells, albumen, and yolk of white and brown eggs were collected at the poultry house and at the egg-storage room. Salmonella spp. was detected by conventional bacteriology in 5.4% (21/387) of analyzed samples and in 16% (68/387) by qPCR. In the 114 unwashed white eggs samples of eggshell, albumen and yolk, the bacterium was identified in 2.6% of the eggs (3/114) by conventional bacteriology and in 13.2% (15/114) by qPCR. In the 90 samples of washed eggs, 6.7% (6/90) were contaminated as detected by conventional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: QPCR; Eggshells; Albumen; Yolk.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100117

Detection of SNPs in the BMP6 Gene and Their Association with Carcass and Bone Traits in Chicken
Provedor de dados: 89
Autores: Cui,C; Ye,F; Li,Y; Yin,H; Ye,M; He,L; Zhao,X; Xu,H; Li,D; Qiu,M; Zhu,Q; Wang,Y.
ABSTRACT BMP6, a member of the subfamilies of the morphogenetic proteins (BMPs), plays a crucial role in osteogenic and chondrocyte differentiation in vitro and stimulates chondrogenesis, making chondrocytes differen-tiate on their terminal stage. The objective of this study is to explore the relationship between polymorphism of BMP6 gene and slaughter traits in chicken respectively. We screened the exonic and intronic regions of BMP6 gene by DNA pool construction and amplified DNA fragment by PCR, and finally, we got nine SNPs. Association analysis revealed that BMP6 had no significant association among all slaughter traits in Yellow bantam chicken. However, BMP6 had a significant difference with femur weight, tibia weight, femur length (p&lt;0.05), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BMP6 gene; Bone traits; Carcass traits; Chicken; Polymorphisms.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400673

Detection of Snps in the Melanocortin 1-Receptor (MC1R) and Its Association with Shank Color Trait in Hs Chicken
Provedor de dados: 89
Autores: Shen,X; Wang,Y; Cui,C; Zhao,X; Li,D; Zhu,Q; Jiang,X; Yang,C; Qiu,M; Yu,C; Li,Q; Du,H; Zhang,Z; Yin,H.
ABSTRACT The melanocortin 1 receptor (MC1R) gene plays a key role in controlling the deposition of melanin. In mammals, the MC1Rgene is regarded as a major candidate gene in the control of melanin formation. In domestic animals, the MC1R gene mainly controls the expression of coat, skin, and plumage color in mammals and birds. In order to breed chickens with dark-green shank faster, we screened the molecular markers for shank color in a HS chicken population by exploring the relationship between polymorphism of the MC1R gene and three different shank colors (light green, dark green and yellow). Two primer pairs for code region of the MC1R gene were designed in the basic of chicken genomic sequence. DNA sequencing was performed to detect the polymorphisms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HS chicken; MC1R gene; Polymorphisms; Shank color.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300314

Determinação do Valor Nutricional das Sojas Integrais Processadas para Aves
Provedor de dados: 89
Autores: Café,MB; Sakomura,NK; Junqueira,OM; Carvalho,MRB; Del Bianchi,M.
Três ensaios biológicos foram realizados com o objetivo de determinar o conteúdo de energia metabolizável e do coeficientes de digestibilidade do extrato etéreo da soja integral processada por diferentes métodos (extrusão e tostagem) e do farelo de soja reconstituído com óleo. No primeiro e segundo ensaios, foram utilizadas a metodologia tradicional de coleta total de excretas, utilizando pintos no primeiro ensaio e galos no segundo. No terceiro ensaio, empregou-se a metodologia de alimentação forçada (Sibbald, 1976) com galos adultos. De acordo com os resultados obtidos, as sojas testadas apresentaram composições bromatológicas semelhantes. Os processamentos usados para a soja integral conferiram diferenças na digestibilidade dos nutrientes da soja e os...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibilidade; Energia metabolizável; Soja integral; Soja extrusada; Soja tostada.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100010

Determination of apparent metabolizable energy of crude glycerin in broilers chickens
Provedor de dados: 89
Autores: Gianfelici,MF; Ribeiro,AML; Penz Jr,AM; Kessler,AM; Vieira,MM; Machinsky,T.
The objective of the experiment was to determine the Apparent Metabolizable Energy corrected for nitrogen (AMEn) of a glycerin product derived from biodiesel production for broilers. A number of 35 male Ross 308 broilers, with 35 days of age was fed ad libitum diets containing 0, 5, 10, 15, or 20% glycerin. AMEn was determined using total excreta collection, with four days of adaptation and three days of collection. Increasing glycerin intakes resulted in increased water excretion. Glycerin AMEn varied as a function of dietary inclusion levels, and a cubic equation was identified by regression analysis. Maximum AMEn level- 4890 kcal/kg DM- was obtained with 15% glycerin inclusion. However, this level caused excessive water excretion, making its use...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycerol; Metabolism; Water excretion.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400006

Determination of Moisture Levels, Protein and Water Absorption of Chicken Giblets
Provedor de dados: 89
Autores: Scaratti,D; Geremias,R; Franchin,PR; Scaratti,G.
Abstract This study aimed at evaluating the levels of moisture, protein, water to protein ratio, and water absorption during chilling of chicken giblets (heart, liver, and gizzard) to set legal limits of water absorption during this process. The survey was conducted in the southern Brazil, the largest broiler-producing region of this country. Giblets (heart, liver, and gizzard) were collected fresh from the processing line after evisceration and at the exit of the chiller after the immersion process from two processing plants. One of the plants (PP1) processes small chickens (1,100g live weight) and PP2 processes chickens with 2,800g live weight. In total, 448 samples were collected. Laboratory tests were performed in duplicate for each parameter measured....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken giblets; Chiller; Moisture; Protein; Water absorption.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100193

Determination of Ochratoxin A Levels in Mixed Feed and Feed Stuffs Used in Some Laying Hens and Ruminant Enterprises of Sivas City
Provedor de dados: 89
Autores: Gumus,R; Ercan,N; Imik,H.
ABSTRACT Mycotoxins, which are produced by some fungi under improper storage conditions before or after harvesting in plant products, cause acute or chronic toxicities. Ochratoxin A (OA) which is also one of the harmful mycotoxins pose a threat to animal and human health. This study was carried out in order to determine OA levels in mixed feed and feedstuffs materials used in livestock enterprises throughout Sivas province. The 59 mixed feeds and 30 feedstuffs materials collected from different enterprises was analysed. Ochratoxin A concentrations were quantified using immunoassay (ELISA). In result, OA was found to be positive in 64 (71.91%) of the 89 samples analysed, whereas OA was not found in 25 samples (28.09%).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feedstuffs; Laying hen feed; Mixed feed; Ochratoxin A; Sivas.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100085

Determination of the chemical composition, amino acid levels and energy values of different poultry offal meals for broilers
Provedor de dados: 89
Autores: Silva,EP da; Rabello,CBV; Lima,MB de; Arruda,EMF de; Ludke,JV; Ludke,MCMM.
The aim of this study was to determine the chemical composition, amino acid content and energy values, as well as to quantify the passage rate in the digestive tract of three different poultry offal meals (POM), in two experiments carried out with broilers. In the first experiment, metabolizable energy values were determined (AMEn and TMEn) using the method of total excreta collection. In this experiment, 150 15-d-old male and female broilers were distributed according to a completely randomized experimental design with 5 treatments of 5 replicates of 6 birds each. The following treatments were applied: a reference diet, three test diets consisting of 250 g/kg of the tested ingredient (POM) + 750 g/kg of the reference diet, and one group of birds fasted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Poultry by-products; Passage rate.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200003

Determination of the energetic value of corn, soybean meal and micronized full fat soybean for newly hatched chicks
Provedor de dados: 89
Autores: Longo,FA; Menten,JFM; Pedroso,AA; Figueiredo,AN; Racanicci,AMC; Gaiotto,JB; Sorbara,JOB.
There are some evidences described in the literature showing reduced energy metabolizability of ingredients for newly hatched chicks. Hence, a metabolism trial was carried out with the objective of determining the metabolizable energy of corn grain, soybean meal and micronized full fat soybean for newly hatched chicks. The method of total excreta collection was used in an experiment with 192 male chicks from one to seven days, distributed in a completely randomized design with four treatments and four replicates of twelve birds. Excreta were collected from four to seven days of age. The treatments included a reference diet, two test-diets consisting of 60% of the reference diet and 40% of the test ingredients: corn grain (CG) and soybean meal (SM), and one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicks; Corn; Metabolizable energy; Micronized full fat soybean; Soybean meal.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300003

Determination of the Quality and Shelf Life of Sous Vide Cooked Turkey Cutlet Stored at 4 and 12ºC
Provedor de dados: 89
Autores: Akoğlu,IT; Bıyıklı,M; Akoğlu,A; Kurhan,Ş.
ABSTRACT The aim of this study was to determine the quality and shelf life of sous vide turkey cutlet stored at 4 and 12ºC. Samples were packaged under vacuum into polyamide-polypropylene pouches, cooked using sous vide technology (65ºC/40 min), chilled at 3ºC and stored at 4 and 12ºC for 5 weeks. Microbial (TMAB, lactic acid bacteria, Enterobacteriaceae, moulds and yeasts, Salmonella spp., L. monocytogenes, Cl. perfringens), physical-chemical (pH, water activity, TBARS, L*a*b* colour, texture profile analysis and shear force) and sensory (appearance, colour, odour, flavour, juiciness, chewiness and acceptance) parameters were determined. According to the results of mesophilic bacterial counts and sensory analysis, the shelf life of the sous vide turkey...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sous vide (SV); Storage; Turkey cutlet; Cooking; Food preservation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100001

Determining Factors Affecting Consumer’s Decision to Purchase Organic Chicken Meat
Provedor de dados: 89
Autores: Kaygisiz,F; Bolat,BA; Bulut,D.
ABSTRACT In the present study, the effect of consumers’ perception levels (product, price, and benefit perception), consciousness levels (health, environment, and animal welfare), and sociodemographic characteristics on the purchase decision of organic chicken meat were examined.Logistic regression analysis was used to determine the relationship between the purchase decision of organic chicken meat and the perception level, consciousness level, sociodemographic characteristics. As a result of the analyses made, it has been determined that organic chicken meat naturalness perception, value-quality perception, health control awareness, awareness of animal life quality, and income level havestatistically significant effects on the probability of purchasing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Consumer behavior Logistic regression analysis; Organic chicken meat; Perception Turkey.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400320

Determining the Best Sectioning Method and Intestinal Segment for Morphometric Analysis in Broilers
Provedor de dados: 89
Autores: Gava,MS; Moraes,LB; Carvalho,D; Chitolina,GZ; Fallavena,LCB; Moraes,HLS; Herpich,J; Salle,CTP.
Brazilian poultry production is very efficient and demands maximum broiler performance. Therefore, digestive system pathologies have a relevant role. Considering it is difficult to obtain consistent information on intestinal morphometric analysis, this study aimed at establishing essential and clear criteria for the collection of intestinal segments for morphometric analysis. Fifteen 13-d-old broilers were sacrificed and three intestinal segments were collected per bird. Two 3-cm long sections were obtained from each of the intestinal segments. Samples were collected open or closed. The closed samples were transversely, hemicylindrically, or longitudinally sectioned. Samples were processed and stained with hematoxylin and eosin. The number of microscopic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Image; Intestine; Morphometry; Poultry; Villus.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200145

Determining the Contribution of Ventilation and Insulation of Broiler Breeding Houses in Production Performance Using Analytic Hierarchy Process (AHP)
Provedor de dados: 89
Autores: Samadpour,E; Zahmatkesh,D; Nemati,MH; Shahir,MH.
ABSTRACT This study was conducted using Analytic Hierarchy Process (AHP) in order to rank broiler breeding farms in Zanjan province, Iran, regarding buildings, installations, and equipment to determine their effects on production factors. Data on 108 farms were collected using designed forms. This data was analyzed based on the effectiveness of each parameter in the production and management category according to experts’ opinion. The results indicated that ventilation systems (fans, inlets, and damper) as well as wall and roof insulation in poultry houses, constituted 66% of the technology coefficient. The stocking density increased through improvement of the mechanization coefficient. Most of these farms used longitudinal or tunnel ventilation and a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Analytic Hierarchy Process; Broiler; Buildings; Installations; Mechanization.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200211

Detoxified Castor Seed Cake for Broilers
Provedor de dados: 89
Autores: Faria Filho,DE; Dias,AN; Carneiro,WA; Bueno,CFD; Matos Júnior,JB; Veloso,ALC; Rodrigues,PA.
Abstract The objective of the present study was to evaluate the effect of the dietary detoxified castor seed cake (DCC) inclusion on broiler performance and carcass traits. Two hundred and fifty Cobb-500(r) broilers were distributed according to a completely randomized experimental design consisting of five treatments (dietary inclusion of 0.0, 2.5, 5.0, 7.5, and 10.0% DCC) with five replicates of 10 birds each (five males and five females). Feed intake (FI), body weight gain (WG), and feed conversion ratio (FCR) were evaluated from one to 40 days of age. Carcass yield and the yields of the breast, leg (drumstick+thighs), and wings were determined when broilers were 40 days old. Live performance parameters were influenced by DCC dietary inclusion, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Performance; Carcass yield; Ricinuscommunis L.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100069

Development and Application of Est-Ssr Markers in Quails
Provedor de dados: 89
Autores: Bai,JY; Pang,YZ; Qi,YX; Zhang,XH; Yun,XY.
ABSTRACT Aiming at accelerating the application of molecular markers in the genetic improvement of quails, six EST-SSR markers were successfully developed using a bioinformatics method. Polymorphisms of three quail populations (Chinese yellow quail, China black quail and Korean quail) were detected. The results showed that there were 2-6 alleles in six EST-SSR markers. Mean polymorphism information contents of Chinese yellow quails, Chinese black quails and Korean quails were determined as 0.5451, 0.4962 and 0.4937, respectively. Average heterozygosity valuesof 0.6134, 0.5759 and 0.5613 were calculated. Among the six EST-SSR markers, three were highly polymorphic, and the other three were moderately polymorphic. The newly-developed six EST-SSR markers may...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chinese yellow quail EST-SSR Bioinformatics; Genetic diversity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500027

Development and Performance of a Mechanical Egg Collection System Versus the Hand-Operated Dutch Nest
Provedor de dados: 89
Autores: Pilotto,F; Ribeiro,AML; Cargnelutti Filho,A; Klein,VA.
ABSTRACT The aim of this study was to design a new mechanical nesting system based on scientific works on the behavior of laying hens, and to compare its performance with that of a hand-operated Dutch nest. The equipment was assessed in two poultry houses; in the first one, the eggs were collected manually, whereas in the second one, the newly designed mechanical nest was used for the collection. A total of 7,800 hens and 800 males were housed in each poultry house, and the percentages of eggs produced, nest dirty eggs, floor eggs, and cracked and discarded eggs were determined between weeks 25 and 52. The percentage of eggs with microcracks, infertility, embryo mortality, bacterial contamination, fungal contamination, chicks with stunting syndrome and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Laying behavior; Mechanical nest.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400523

Development of an enzyme-linked immunosorbent assay for quantification of Salmonella enteritidis-specific antibodies in egg yolk
Provedor de dados: 89
Autores: Tayeb,IT; Nehme,P; Jaber,L; Barbour,EK.
The present study aims at developing an indirect ELISA to quantify yolk antibodies specific to all surface proteins of the invasive Salmonella Enteritidis (SE), which acquired the 1.8, 14.1, and ~ 50 Kb plasmids. An ELISA checkerboard was used in four different experiments to account for the different parameters included in the preliminary ELISA procedure, and consequently to maximize the difference in Optical Density (OD) values between control positive and negative yolk samples. The first experiment aimed at studying the impact of 5% Bovine Serum Albumin (BSA) dissolved in distilled water as a blocking reagent on a 28 µg/well SE antigen-coated plate, while applying the positive and negative control yolk samples to different concentrations of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibodies; Egg yolk; ELISA; Salmonella Enteritidis.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400009

Dexamethasone Regulates Macrophage and Cd4+Cd25+ Cell Numbers in the Chicken Spleen
Provedor de dados: 89
Autores: Calefi,AS; Quinteiro-Filho,WM; Fukushima,AR; Cruz,DSG da; Siqueira,A de; Salvagni,FA; Namazu,LB; Gomes,COMS; Ferreira,AJP; Palermo Neto,J.
Abstract Dexamethasone (DEX) is a corticoid hormone that is experimentally used to mimic the effects of increased levels of endogenous corticosterone observed during the stress response. Currently, stress is considered one of the major predisposing factors for diseases in the poultry industry. The aim of this study was to analyze the effects of DEX and/or of a 20-fold coccidial vaccine dose on leukocyte phenotypes in the spleen and cecal tonsils of chickens. Twenty specific-pathogen-free (SPF) Leghorn chickens were divided into four groups: a non-treated group (NT), a DEX-treated group (Dex), a vaccinated group (V) and a DEX-treated+vaccinated group (Dex+V). On experimental day (ED) 42, each bird in the vaccinated groups received a anti-coccidial vaccine....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coccidiosis; Eimeria; Avian immunology; Flow cytometry; Neuroimmunomodulation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100093

Diagnosis and evaluation of fungi presence in the air of two different ventilation sytems for broiler houses
Provedor de dados: 89
Autores: Gigli,ACS; Baracho,MS; Nääs,IA; Silva,RA; Zago,R; Dall'Anese,FP.
Intensive broiler production in tropical climates requires adequate air circulation to control heat stress. Excess of air speed may lead to dust production and reduction of air quality and, consequently, production parameters. Brazilian regulations prohibit the presence of pathogens that may deteriorate air quality, and the presence of fungi in the air inside the poultry houses is limited to 750CFU/m³. The aim of this study was to evaluate the presence of fungi in two distinct types of broiler houses. The research compared two types of air ventilation: conventional (G1) and positive tunnel ventilation (G2). The fungi were collected using a dust sampling pump, with the air flow calibrated to 1.5 L/min. The filter impregnated with dust was submitted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment; Fungi; Poultry housing.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400002

Diagnosis of Gallibacterium Anatis in Layers: First Report in Turkey
Provedor de dados: 89
Autores: Yaman,S; Sahan Yapicier,O.
ABSTRACT Gallibacterium anatis, a member of the Pasteurellaceae family, leads to decrease in egg-production, animal welfare and increase in mortality. This study aimed to diagnose G. Anatis, which caused economic losses in laying hens by using conventional and molecular techniques. In this study, G. anatis was examined from a total of 200 dead chicken tissues (heart, liver, lung, spleen and trachea) in laying hen farms that observed a decrease in egg production with respiratory system infection. Conventional methods based on colony morphology, sugar fermentation tests and hemolytic properties and molecular conformation using 16S rRNA-23S rRNA specific primers were performed to identify G. anatis. G. anatis was isolated in 20 (10%) of the examined samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gallibacterium anatis; Isolation and identification; Layers; PCR.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300307

Diagnosis of infectious bronchitis: an overview of concepts and tools
Provedor de dados: 89
Autores: Villarreal,LYB.
Infectious bronchitis (IB) casues multi-systemic infection in chickens with signs similar caused by other poultry pathogens and thus a high diagnostic accuracy can only be achieved by s series of laboratory assays. This article reviews in a brief way the traditional virus assays such as embryo innoculation, tracheal rings and virus neutralization assays for the direct detection of Avian infectious bronchitis virus (IBV) and methods based on gene molecular biology and some assays for the detection of anti-IBV antibodies, including ELISA. A critical view on each technique is also provived by the author.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibodies; Diagnosis; IBV; Typing.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200006

DIAGNOSTIC APPLICATION OF MULTIROW COMPUTED TOMOGRAPHY OF THE HIP JOINT OF JAPANESE QUAILS (COTURNIX JAPONICA)
Provedor de dados: 89
Autores: Paśko,S; Bartyzel,BJ; Dzierzęcka,M; Murawska,D; Szlufik,K; Bakoń,L; Gruszczyńska,J; Grzegrzółka,B; Nowicki,M.
ABSTRACT The morphological assessment of selected parts of the hindlimb of Japanese quails (Temminck &amp; Schlegel, 1849), with particular emphasis on hip joint structures, was performed, using a 128-row scanner (GE Optima Aquilion, Toshiba, Japan). Eight dead 3-month-old Japanese quails were evaluated. During intravital examination of those birds, no hindlimb abnormalities or locomotion disorders were detected. Bird body, which hip joints and other structures of hindlimbs were studied, was examined in posterioranterior position. The following hip joint structures, on both sides, were assessed in this study: hip joint gap width, acetabulum width, femoral head diameter, and femoral shaft width. The applied imaging method allowed accurate assessment of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Computed tomography; Hip joint; Japanese quail.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300501

Diet formulation techniques and lysine requirements of 1- to 22-day-old broilers
Provedor de dados: 89
Autores: Siqueira,JC; Sakomura,NK; Dourado,LRB; Ezequiel,JMB; Barbosa,NAA; Fernandes,JBK.
Two experiments were carried out to compare two techniques (amino acid supplementation and dilution) for formulating experimental diets for pre-starter (1 to 8 days) and starter (8 to 22 days) broiler chicks and to estimate digestible lysine requirements using the dose-response method. In each experiment, 1,200 male Cobb 500 chickens were randomly distributed according to a 5x2 factorial arrangement (lysine level x formulation technique) with six replicates of 20 birds each. For the supplemented diet, a basal diet was formulated to meet the nutritional requirements, then L-lysine HCl was added to achieve digestible lysine levels of 0.975, 1.082, 1.189, 1.296 and 1.403% in the pre-starter diets and 0.840, 0.932, 1.024, 1.116 and 1.208% in the starter diets....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Diet formulation; Dose-response; Lysine; Performance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200008

Dietary Effects of Natural Polyphenol Antioxidant on Laying Performance and Egg Quality of Laying Hens Fed Diets with Oxidized Oil
Provedor de dados: 89
Autores: Lee,HH; Kim,DH; Lee,KW; Kim,KE; Shin,DE; An,BK.
ABSTRACT This study was conducted to investigate the effects of dietary oxidized oil and natural polyphenol antioxidants on laying performances and egg quality of laying hens. A total of two hundred, 61-week-old Lohmann Brown laying hens were divided into five groups, consisting in four replicates of 10 birds each. They were fed one of the five experimental diets (fresh oil only, oxidized oil without antioxidants, oxidized oil with vitamin E 200 ppm, oxidized oil with vitamin E 100 ppm + Cabanin CSDⓇ 100 ppm, oxidized oil with Cabanin CSDⓇ 500 ppm)respectively, for 6 weeks. There were no significant differences in laying performances and egg weight among the treatments. However, egg mass in group fed oxidized oil with vitamin E 100 ppm + Cabanin CSDⓇ 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hens; Oxidized oil; Natural antioxidants; Vitamin E; Egg quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100319

Dietary fiber inclusion as an alternative to Feed Fasting to induce molting in Commercial Layers
Provedor de dados: 89
Autores: Sgavioli,S; Filardi,R da S; Praes,M F F M; Domingues,C H de F; Pileggi,J; Andrade,P de C; Boleli,I C; Junqueira,O M.
The objective of the present experiment was to compare the performance, egg quality and organ morphometrics of commercial layers submitted to alternative forced molting methods using dietary fibers. The experimental period included the phases of molting, rest, and second laying cycle (six periods of 28 days each). In the trial, 320 commercial Isa Brown layers with 72 weeks of age were distributed, according to a completely randomized experimental design into five treatments with eight replicates of eight birds each, totaling 40 experimental units. Molting was induced by feeding diets with the inclusion of alfalfa or soybean husks at 80% and 60% or feed fasting. Treatments were applied for 14 days. Performance and egg quality parameters were evaluated for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alfalfa; Soybean husks; Egg production; Morphometrics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400011

Dietary Lactic Acid Bacteria Modulate Yolk Components and Cholesterol Metabolism by Hmgr Pathway in Laying Hens
Provedor de dados: 89
Autores: Deng,Q; Shi,H; Luo,Y; Liu,N; Deng,X.
ABSTRACT This study aimed to investigate the effect of dietary lactic acid bacteria (LAB) on egg production, yolk components, cholesterol metabolism, and enterohepatic circulation of bile acids in hens. Four treatment diets included a control and LAB added at 3 × 105 (low), 3 × 107 (medium), or 3 × 109 (high) cfu/kg. The treatment LAB contained equal amounts of Lactobacillus acidophilus, Lactobacillus plantarum, and Enterococcus faecium. Results showed that high LAB increased (p&lt;0.05) laying rate, egg mass, and yolk phospholipid, but decreased (p&lt;0.05) yolk triglyceride and phosvitin. Diets with LAB decreased (p&lt;0.05) yolk and serum cholesterol content, and serum bile acid by 9.3 to 39.9%. In liver, high LAB downregulated (p&lt;0.05) mRNA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cholesterol metabolism; HMGR pathway; Lactic acid bacteria; Laying hens; Yolk components.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300303

Dietary levels of potassium for broiler chickens
Provedor de dados: 89
Autores: Oliveira,JE; Albino,LFT; Rostagno,HS; Páez,LE; Carvalho,DCO.
Three experiments were conducted to determine the nutritional requirements of potassium (K) for male Ross broiler chickens, from 8 to 21, 22 to 42 and 43 to 53 days of age. The following parameters were evaluated: body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR). In each experiment, a completely randomized experimental design was used, with six treatments (K levels), and six, eight and eight numbers of replicates, and eight, five and four birds per pen, respectively. The experimental diets were basal diets deficient in K but supplemented with K carbonate to result in levels of 0.30, 0.44, 0.58, 0.72, 0.86 and 1.00% K. Estimated requirements for BWG were 0.628, 0.714 and 0.798% K, for the periods 8-21, 22-42 and 43-53 d, respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Ion; Mineral; Potassium; Requirement; Weight gain.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100006

Dietary Levels of Zinc and Manganese on the Performance of Broilers Between 1 to 42 Days of Age
Provedor de dados: 89
Autores: Pacheco,BHC; Nakagi,VS; Kobashigawa,EH; Caniatto,ARM; Faria,DE; Faria Filho,DE.
ABSTRACT The objective of this study was to determine the optimal dietary concentration of zinc and manganese on the performance characteristic and the requirement of these trace minerals derived from organic sources for broilers from 1 to 42 days of age. In experiment 1, zinc was evaluated, whereas manganese was evaluated in experiment 2. In each experiment, 320 males chicks were distributed in iron mesh metabolic cages (0.9m x 0.7m x 0.5m), according to a completely randomized experimental design in eight treatments with five replicates of eight birds each. In experiment 1, zinc sulfate was included at 0,60 and 100mg/kg and zinc methionine at 20, 40, 60, 80 and 100mg/kg. In experiment 2, manganese sulfate was added at 0, 65 and 105mg/kg and manganese...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian; Feed conversion ratio; Nutrition; Requirements; Trace minerals.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200171

Dietary nutrient manipulation to improve the performance and tibia characteristics of broilers fed oak acorn (Quercus Brantii Lindl)
Provedor de dados: 89
Autores: Houshmand,M; Hojati,F; Parsaie,S.
An experiment was conducted to evaluate the effects of dietary nutrients (protein, methionine, and choline) manipulation on the performance and tibia characteristics of broilers fed diets containing 15% oak acorn. A completely randomized design with five treatments and four replicates of 15 chicks each, was used. One group was fed a diet based on corn (without oak acorn) as control and other four groups were fed diets containing oak acorn with one of the following nutrient manipulation: without nutrient manipulation, high level of methionine (100% more than NRC), high level of CP (10% more than NRC), and addition of 0.2% choline. Starter and finisher diets were fed from one to 21 and 22 to 42 d of age, respectively. The results indicated that group fed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Nutrient manipulation; Oak acorn; Performance; Tibia.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100017

Dietary oxidized poultry offal fat: broiler performance and oxidative stability of thigh meat during chilled storage
Provedor de dados: 89
Autores: Racanicci,AMC; Menten,JFM; Regitano-d'Arce,MAB; Torres,EAFS; Pino,LM; Pedroso,AA.
Two experiments were conducted to evaluate the effects of dietary oxidized poultry offal fat on the performance of broilers and on the oxidative stability of dark chicken meat. One hundred and sixty male chicks were fed a corn-soybean meal diet containing 4% fresh or oxidized poultry fat from 10 to 47 days of age. Fresh fat was stored frozen until diets were produced, and oxidized fat was obtained by electrical heating (110 to 120 ºC). Birds were slaughtered at 47 days of age, and carcass characteristics were measured. Skinless and deboned thigh meat was stored chilled during 12 days, and samples were periodically collected to assess their quality and oxidative stability. Dietary oxidized fat did not affect bird performance or carcass characteristics....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipid oxidation; Meat quality; TBARS; Oxidized fat.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100005

Dietary protein effects on growth performance, carcass traits and expression of selected jejunal peptide and amino acid transporters in broiler chickens
Provedor de dados: 89
Autores: Corzo,A; Loar,II RE; Kidd,MT; Burgess,SC.
The effect of dietary protein on growth, carcass traits and some specific intestinal intestinal peptide and amino acid transporters in broiler chickens was studied. Birds received a common pre-test diet, and were subsequently fed either a standard positive control diet (PC) or a reduced CP diet (RCP) from 21 to 42 d of age. Growth was negatively impacted with feeding of RCP as manifested by an increase in feed consumption and feed conversion ratio. Carcass traits also showed evidence of negative effects of feeding the RCP diet, leading to a reduction in carcass and breast meat yield and an increase in abdominal fat percentage. Blood plasma total protein was reduced when the broilers were fed the RCP diet. Expression of mRNA for one peptide (PepT1) and four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid transporters; Chicken; Crude protein; PepT1; Protein absorption.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200008

Dietary Supplementation of Alternative Methionine and Choline Sources in the Organic Broiler Production in Brazil
Provedor de dados: 89
Autores: Demattê Filho,LC; Pereira DC de,O; Possamai,E.
ABSTRACT The objective of this study was to evaluate the use of natural and alternative sources of methionine and choline which can be allowed to use in organic livestock systems to feed broilers produced in Brazil. Seven hundred and twenty one-d-old male Cobb broilers were randomly allocated to four treatments with six replicates of 24 birds each. The treatments consisted in substituting the commonly used DL-methionine 99% by a vegetable source of methionine and cholinechloride 60% by alternative source of choline in the form of phosphatidylcholine. The following treatments were evaluated: I) feed with DL-methionine 99% and choline chloride 60%, II) feed with an vegetable methionine source and choline chloride 60%, III) feed with DL-methionine 99% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Choline; DL-methionine 99%; Organic agriculture; Organic broiler.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400489

Dietary Supplementation of Barbatimão (Stryphnodendron Adstringens) and Pacari (Lafoensia Pacari) Extracts on the Oxidative Stability and Quality of Chicken Meat
Provedor de dados: 89
Autores: Lima,CB; Migotto,DL; Oliveira,GR; Souza,TC; Santana,RO; Castejon,FV; Tanure,CBGS; Santana,AP; Stringhini,JH; Racanicci,AMC.
ABSTRACT In order to evaluate the antioxidant effects of barbatimão (BAR) or pacari (PAC) on chicken meat oxidative stability and quality, seven dietary treatments containing in three different BAR and PAC concentrations (200, 400 and 600ppm) plus a negative control (CONT) were fed to 350 broilers from 1 to 41 days of age. Ten birds per treatment were slaughtered to collect breast and thigh meat to evaluate pH, color (L*, a*, b*), cooking weight loss (CWL), and shear force (SF) 24 hours postmortem, and TBARS levels in precooked meatballs stored chilled for 8days. The dietary supplementation with BAR and PAC extracts did not affect pH and color, but reduced (p&lt;0.05) SF in breast meat compared with CONT suggesting improved tenderness. PAC200 increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant activity; Brazilian plants; Broiler meat; Quality attributes; TBARS.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400669

Dietary Supplementation of Different Levels of Phytogenic Feed Additive in Broiler Diets: The Dynamics of Growth Performance, Caecal Microbiota, and Intestinal Morphometry
Provedor de dados: 89
Autores: Ahsan,U; Kuter,E; Raza,I; Köksal,BH; Cengiz,Ö; Yıldız,M; Kızanlık,PK; Kaya,M; Tatlı,O; Sevim,Ö.
ABSTRACT The present study was conducted to investigate the influence of different levels of dietary phytogenic feed additive (PFA) on growth performance, caecal microbiota, and intestinal morphology of broilers. A total of 480 Ross-308 one-day-old male broilers chicks (body weight 43±3 g) were randomly assigned to 32 replicate pens of four experimental groups, each experimental group consisting of 8 replicates (each replicate pen consisting of 15 chicks). A basal diet was formulated based on corn and soybean meal that was fed to the control group. Other dietary treatments received a commercial PFA at 100 mg/kg (PFA100), 125 mg/kg (PFA125), and 150 mg/kg (PFA150). Body weight gain, feed intake, and feed conversion rate of broilers were recorded on 1-21,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Intestinal microbiota; Intestinal morphology; Performance; Phytogenic feed additive.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400737

Diets formulated on total or digestible amino acid basis with different energy levels and physical form on broiler performance
Provedor de dados: 89
Autores: Maiorka,A; Dahlke,F; Penz,AM; Kessler,AM.
We studied the effects of two different systems of expressing amino acid requirements (total - TAA or digestible - DAA), two energy levels (2,900 or 3,200 kcal of ME/kg) and two physical forms (mash or pellet) on the performance of male broilers from 21 to 42 d of age. Diets formulated on DAA basis improved feed conversion (p&lt;0.001) and the conversion of consumed ME into body weight gain (p&lt;0.001). Birds fed 3,200 kcal ME/kg presented better feed conversion (p&lt;0.001), higher abdominal fat deposition (p&lt;0.001) and worse conversion of consumed ME into body weight gain (p&lt;0.001) as compared to birds fed 2,900 kcal ME/kg. Birds fed pelleted feed had higher feed intake (p&lt;0.001), higher weight gain (p&lt;0.001), better feed conversion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestible aminoacid; Energy; Ideal protein; Pellet.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100008

Diferentes critérios de formulação de rações para frangos de corte no período de 1 a 21 dias de idade
Provedor de dados: 89
Autores: Araújo,LF; Junqueira,OM; Araújo,CSS; Artoni,SMB; Faria Filho,DE.
Dois experimentos foram realizados com o objetivo de avaliar diferentes critérios de formulação de rações, baseados em aminoácidos totais e digestíveis, para frangos de corte no período de 1 a 21 dias de idade. As dietas foram formuladas para atender às exigências de metionina, metionina+cistina, lisina e treonina. No primeiro experimento, foram utilizados 800 pintos machos, Hubbard, distribuídos em delineamento inteiramente casualizado com 4 critérios de formulação, para atender às exigências em aminoácidos totais - NRC (1994), Rostagno et al. (1992), Degussa (1997) e AEC (1993), com 4 repetições de 50 aves. No segundo experimento, foram utilizados 600 pintos machos, Cobb, distribuídos em delineamento inteiramente casualizado com 3 critérios de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos; Critérios de formulação; Desempenho; Frangos de corte.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300003

Different criteria for feed formulation based on digestible amino acids for broilers
Provedor de dados: 89
Autores: Araújo,LF; Junqueira,OM; Araújo,CSS; Laurentiz,AC; Assuena,V; Gomes,GA.
An experiment was carried out to evaluate different criteria in feed formulation based on digestible amino acids for broilers during the grower phase. Diets were formulated according to the recommendations for digestible methionine, methionine + cysteine, lysine, and threonine. A total number of six hundred Cobb 500 male day-old chicks were distributed in a completely randomized experimental design, with three formulation criteria supplying the recommendations established by Baker &amp;amp; Chung (1992), Degussa (1997), and Rostagno et al. (2000), with 4 replicates of 50 birds each. No significant differences were observed for weight gain and feed intake. However, feed conversion ratio improved when birds were fed the diets containing the profiles...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carcass yield; Digestible amino acids; Performance.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400005

Different criteria of feed formulation for broilers aged 43 to 49 days
Provedor de dados: 89
Autores: Araújo,LF; Junqueira,OM; Araújo,CSS; Faria,DE; Andreotti,MO.
An experiment was carried out to evaluate different formulated feeds for broilers from 43 to 49 days of age. Six hundred male Cobb broilers were distributed in a completely at random experimental design with 3 treatments (3 different criteria of feed formulation) and 4 repetitions per treatment, with 50 birds each. Diets were formulated with different criteria of digestible amino acid inclusion (methionine, methionine+cystine, lysine and threonine), according to the profiles recommended by Baker and Chung (1992), Degussa (1997) and Rostagno (2000) Live performance and carcass yield were evaluated in birds fed the different diets from 43 to 49 days of age). The profile established by Degussa (1997) resulted in best live performance. All profiles supplied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carcass yield; Digestible amino acids; Performance.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100008

Different Selection Strategies for the Improvement of the Growth Performance and Carcass Traits of Japanese Quails
Provedor de dados: 89
Autores: Ahmad,S; Mehmood,S; Javed,K; Mahmud,A; Usman,M; Rehman,A; Ishaq,HM; Hussain,J; Ghayas,A.
ABSTRACT The present study evaluated different selection strategies to improve the growth performance and carcass traits of Japanese quails. To this end, 540 Japanese quails previously selected for high body weight at three ages (10, 12 and 14 weeks) from four close-bred flocks (Major, Kaleem, Saadat and Zahid) were subjected to three selection strategies: pedigree-based, mass selection or random-bred (controls). For pedigree-based selection, 108 birds (4 close-bred flocks × 3 age groups × 9 replicates × 1 bird each) with full pedigree and selected for high body weight were used, whereas in mass selection 324 birds (4 close-bred flocks × 3 age groups × 9 replicates × 3 birds each) with high body weight were selected to be the parents of next generation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pedigree Selection; Mass Selection; Parental Age groups; Close-bred Flocks; Feed Conversion Ratio; Carcass yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300497

Different sodium levels and electrolyte balances in pre-starter diets for broilers
Provedor de dados: 89
Autores: Maiorka,A; Magro,N; Bartels,HAS; Kessler,AM; Penz Jr,AM.
An experiment with 400 one-day-old male chicks (Ross) was conducted to evaluate the effects of different Na levels (0.10, 0.22, 0.34 and 0.46%) and different cation/anion balances (Na+K-Cl) (100, 150, 200, 250 and 300 meq/kg) in pre-starter diets on broiler performance. The corn and soybean-based diets had 22% crude protein and 2,900 kcal/kg metabolizable energy and were fed ad libitum. Performance data showed a positive quadratic effect of increasing Na levels on feed and water consumption, weight gain and feed conversion. Na+K-Cl also had a quadratic influence on feed intake and weight gain. None of the effects tested affected the amount of water measured in excreta. Derivatives of obtained regression equations pointed to optimal Na levels of 0.45% for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Chlorine; Electrolyte balance; Performance; Potassium; Sodium; Water.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300002

Digestibility and Physicochemical Characteristics of Tambaqui Waste Biological Silage Meal Included in Commercial Layer Diets*
Provedor de dados: 89
Autores: Guimarães,CC; Silva,AJI; Cruz,FGG; Rufino,JPF; Silva,AF; Costa,VR.
ABSTRACT This study aimed at evaluating the effects of the physicochemical and nutritional characteristics of a biological silage meal made of tambaqui waste on dietary nutrient apparent digestibility and energy metabolism of commercial layer diets. Seventy-two 61-week-old Hisex White hens were assigned according to a completely randomized experimental design in two treatments: control diet and diet with 5% tambaqui waste biological silage meal (TWBSM), with six replicates of six birds each. The ensiled biomass presented grey brown color, acid aroma, viscous texture, 5.27±0.016pH, 96.28% dry matter (DM), 33.29% crude protein (CP), 33.65% ether extract (EE), 14.37% ashes, 13.63% non-nitrogen extract (NNE), 65.16 g.kg-1 calcium (Ca), 22.90 g.kg-1 phosphorus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative food; Fish waste; Metabolizable energy; Nutrients; Silage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300321

Digestibility, Determination of Metabolizable Energy and Bone Mineralization of Broilers Fed with Nutritionally Valued Phytase
Provedor de dados: 89
Autores: Litz,FH; Fernandes,EA; Bueno,JPR; Silva,MCA; Carolino,ACXG; Martins,JMS; Fagundes,NS; Nascimento Jr,DV.
ABSTRACT The objective of this study was to evaluate the effect of using exoenzyme phytase in broiler's diets on digestibility of nutrients, feed energy and tibia bone mineralization. A completely randomized design was used, with the following treatments: sorghum with dicalcium phosphate (SDP), corn with dicalcium phosphate (CDP), sorghum with meat and bone meal (SMBM), sorghum with valued phytase (SVP) and sorghum with phytase without valued (SPWV). For digestibility analysis, eighty 15 day old broilers were used, a total of 1400 male Hubbard Flex chickens, which were submitted to total excreta collection to obtain the percentages of food digestibility, crude protein, ether extract, apparent metabolizable energy, calcium and phosphorus while for tibias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal nutrition; Dicalcium phosphate; Meat-and-bone meal; Tibia.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500067

Digestibility of feeds containing sorghum, with and without tannin, for broiler chickens submitted to three room temperatures
Provedor de dados: 89
Autores: Garcia,RG; Mendes,AA; Sartori,JR; Paz,ICLA; Takahashi,SE; Pelícia,K; Komiyama,CM; Quinteiro,RR.
The traditional method of total excreta collection was applied, using 30 to 40 day old male Ross 308 broiler chickens. One hundred and eight broiler chickens were used, randomly assigned to a 3x3 factorial experimental design. The room temperatures were 14 C (cold), 25 °C (thermoneutral) and 32 °C (hot) and the three diets were 100% maize, 100% sorghum with tannin and 100% sorghum without tannin, with four replicates of each. The digestibility coefficients for the dry matter, crude protein, crude fibre, neutral detergent fibre, acid detergent fibre, ether extract, mineral matter and nitrogen-free extract were determined. It was observed that all the digestibility coefficients were higher in the hot chamber and lower in the cold chamber, and that these...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Digestibility; Sorghum; Tannin.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100007

Digestible Lysine on Live Performance of Chicken Type Naked Neck During the Starter Phase
Provedor de dados: 89
Autores: Oliveira,RG de; Pinheiro,SRF; Castro,MR de; Vieira,DJ; Pires,AV; Abreu,LRA de.
ABSTRACT The poultry market has changed due to a higher consumer interest on products with differentiated organoleptic characteristics, making of free-range broiler production a promising activity. This experiment was conducted to determine the digestible lysine requirements of Redbro Cou Nu male and female chickens during the starter phase (one to 21 days of age). Six hundred and thirty Redbro Cou Nu broilers were distributed into 30 pens (21 chickens/pen) according to a randomized complete design in a 5 x 2 factorial arrangement, consisting of five levels of digestible lysine and two sexes, with three replicates (pens) per treatments. Diets with increasing digestible lysine levels (8.1, 9.5, 10.9, 12.3 and 13.7 g of digestible lysine per kg of diet) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Feed conversion ratio; Ideal protein; Nutritional requirement.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400483

Digestible lysine requirements of broilers
Provedor de dados: 89
Autores: Bernal,LEP; Tavernari,FC; Rostagno,HS; Albino,LFT.
Modern broilers have been submitted to continuous genetic improvement, and therefore, their nutritional requirements must be constantly updated to ensure their performance. Two experiments were carried out to evaluate different digestible lysine levels for starter (1021 days) and grower (22-35 days) phases. The experiments were carried out with male and female Cobb 500 broilers, distributed according to a randomized block experimental design in a 5x2 factorial arrangement (5 increasing digestible lysine levels x 2 sexes), totaling 10 treatments, with 8 replicates of 22 and 20 birds during the starter and grower phase, respectively. Digestible lysine levels of 1.06, 1.12, 1.18, 1.24, and 1.30 were used in the starter diets (10-21 days) and 0.9, 0.98, 1.04,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestible lysine; Requirement; Performance; Broiler.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100007

Digestible Lysine Requirements the Performance, Carcass Traits and Breast Meat Quality of Slow-Growing Broilers
Provedor de dados: 89
Autores: Brasil,RJM; Lima,CAR; Machado,NJB; Curvello,FA; Quaresma,DV; Vieites,FM; Sousa,FDR.
ABSTRACT Three experiments were conducted to estimate the digestible lysine requirements of slow-growing broilers on their performance, carcass traits, and breast meat quality. Different broilers were evaluated in each experiment. In Experiment 1, broilers were evaluated from 29-49 days of age (grower phase I), in Experiment 2, from 50 to 69 days old (grower phase II), and in Experiment 3, from 70-84 days old (finisher phase). A completely randomized design with five treatments of four replicates each was applied in all experiments. The following dietary digestible lysine values were investigated: 0.871, 1.011, 1.151, 1.291 and 1.431% in Experiment 1; 0.803, 0.943, 1.083, 1.223 and 1.363% in Experiment 2; and 0.766, 0.906, 1.046, 1.186 and 1.326% in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Meat quality; Lysine requirements; Slow-growing broilers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300555

Digestible Methionine + Cysteine-to-Lysine Ideal Ratio for Meat-Type Quails at Initial Phase
Provedor de dados: 89
Autores: Reis,RS; Viana,GS; Barreto,SLT; Muniz,JCL; Mendonça,MO; Mencalha,R; Ribeiro,CLN; Barbosa,LMR.
ABSTRACT This trial was performed to determine the ideal ratio of digestible methionine + cysteine (Met/Lys) with digestible lysine for meat-type quails from 1 to 14 days of age. A total of six hundred thirty, one-day-old, not sexed meat type quails were randomly assigned to six groups of treatments, each one with seven replicates and fifteen quails per experimental unit. A basal diet, methionine + cysteine-deficient, was graded supplemented with DL-Methionine (0.108; 0.169; 0.230; 0.291; 0.352 and 0.413%) to obtain the treatments, represented by six digestible Met/Lys ratios (0.60; 0.65; 0.70; 0.75; 0.80 and 0.85). Data was analyzed using ANOVA and polynomial regression and broken-line models were used to estimate the digestible Met/Lys ideal ratio,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix coturnix; Digestible amino acids; Sulphur amino acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500051

Digestible Threonine Levels in the Starter Diet of Broilers Derived from Breeders of Different Ages
Provedor de dados: 89
Autores: Tanure,CBGS; Santos,JS; Oliveira,EM; Laboissiere,M; Racanicci,AMC; Mc Manus,CM; Café,MB; Stringhini,JH.
ABSTRACT The aim of this study was to evaluate the effect of digestible threonine supplementation in the starter diet on the performance, intestinal parameters, and nutrient metabolism of broilers derived from breeders of different ages. In total, 480 one-day-old Cobb chicks, derived from 38-or 49-week-oldbreeders, were housed in experimental battery cages until 21 days of age and fed four different threonine levels (800, 900, 1,000, or 1,100 mg/kg) in the starter feed. A completely randomized experimental design in a 2x4 factorial arrangement (breeder age x threonine levels) was applied, totaling eight treatments with five replicates of 12 birds each. Broilers from older breeders fed 800 mg digestible threonine/kg of diet presented higher weight gain,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Development; Metabolism; Nutrition; Poultry.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000031

Digestible Threonine to Lysine Ratios for Meat-Type Quails
Provedor de dados: 89
Autores: Castro,MR; Pinheiro,SRF; Oliveira,RG; Abreu,LRA; Mota,LFM; Miranda,JA.
ABSTRACT Three experiments were conducted to estimate the optimal digestible threonine to lysine ratios (Thr:Lys) of meat-type quails during the pre-starter (1 to 7 days), starter (8 to 14 days) and grower I (15 to 21 days) phases. In each experiment, 600 birds were distributed according to a completely randomized experimental design into five treatments, consisting of five dietary Thr:Lys ratios (0.66, 0.71, 0.76, 0.81 and 0.86%), with eight replicates of 15 quails each. Performance parameters and intestinal morphology were evaluated. During the pre-starter phase, feed intake, threonine intake, weight gain, and ileal villus height linearly increased (p&lt;0.01) as dietary digestible Thr:Lys increased. During the starter phase, increasing digestible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Coturnix coturnix ideal protein; Performance.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100302

DIGESTIBLE VALINE REQUIREMENTS IN LOW-PROTEIN DIETS FOR BROILERS CHICKS
Provedor de dados: 89
Autores: Nascimento,GR; Murakami,AE; Ospina-Rojas,IC; Diaz-Vargas,M; Picoli,KP; Garcia,RG.
ABSTRACT Three experiments were carried out to evaluate the levels of digestible valine in diets with reduced crude protein on the performance, carcass yield and muscle fiber diameter of male broilers during the pre-starter (1 to 8 d of age), starter (9 to 21 d of age) and grower phases (21 to 42 d of age). A total of 1,080 chickens in the pre-starter phase, 900 in the starter phase and 864 in the grower phase were distributed in a completely randomized design with six treatments, consisting of a control positive diet (C+) and diets with 2 percentage points (p.p.) reduction of crude protein level and five graded levels of digestible valine (Val), with six replicates of 30, 25 and 24 birds per experimental unit, respectively. The recommended level of TID...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Branched-chain; Fiber diameter.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300381

Discondroplasia tibial: mecanismos de lesão e controle
Provedor de dados: 89
Autores: Pizauro Junior,JM; Ciancaglini,P; Macari,M.
A discondroplasia tibial (DT) é atribuída a uma assincronia no processo de diferenciação dos condrócitos, levando à formação de uma camada de condrócitos pré-hipertróficos e de uma cartilagem na tíbia proximal que não é calcificada, mas é resistente à invasão vascular. Além disso, tem sido proposto que, na discondroplasia tíbial, a etapa final do processo de calcificação não ocorre devido ao fato de que os efetores de alguns genes, relacionados com o mecanismo de calcificação do disco de crescimento podem apresentar algumas de suas propriedades químicas ou biológicas alteradas e/ou não serem expressos. Nesse sentido, a compreensão do mecanismo de ação e o papel das biomoléculas e dos minerais relacionados com a discondroplasia tibial poderão contribuir...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcificação; Discondroplasia tibial; Mineral; Ossificação; Endocondral.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300001

Dissemination of Salmonella enteritidis by experimentally-infected pigeons
Provedor de dados: 89
Autores: Albuquerque,ÁH; Cardoso,WM; Teixeira,RSC; Lopes,ES; Sales,RJPF; Horn,RV; Rocha-e-Silva,RC; Bezerra,WGA; Gomes-Filho,VJR.
Two groups of domestic pigeons (Columba livia) were experimentally infected orally with doses of 9.5 x10(7) and 9.5 x10(9) CFU/mL (group A and B, respectively) of a Salmonella Enteritidis (SE) strain isolated from chickens. None of the used doses caused mortality of the inoculated birds; however, the pathogen was successfully recovered from the liver and spleen of group B birds on day 7 post-inoculation (dpi). Pathogen shedding, as evaluated through cloacal swabs, occurred in both groups until the 14th day of observation (p &lt;0.05). Among all fecal samples collected from group B (n=4), three different birds shed the pathogen in their feces, out of which two were positive on 3 dpi and one on 7 dpi. The same number of fecal samples was evaluated in group A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inoculation; Pigeons; Salmonella Enteritidis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300007

Distribution of Ifitm3 in Yellow-Feathered Broilers and Inhibition of Avian Reovirus Multiplication by Ifitm3
Provedor de dados: 89
Autores: Wang,Q; Yuan,X; Li,C; Deng,H; Wang,C.
ABSTRACT This study was carried to express the interferon-induced transmembrane protein 3 (IFITM3) in vitro and examine its function in inhibition of avian reovirus (ARV) replication. The recombinant prokaryotic vector expressing yellow-feathered broiler IFITM3 was successfully constructed, and the recombinant protein was expressed in competent Escherichia coli BL21 cells. New Zealand white rabbits were immunized with the purified recombinant protein to prepare a polyclonal antibody, with a titer of 1:128,000. Immunohistochemistry, reverse transcription-PCR, and real-time fluorescence quantitative PCR showed that IFITM3 was distributed in the yellow-feathered broiler immune organs, and the expression of IFITM3 in bursa of Fabricius was more than in spleen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yellow-feathered broiler; Interferon; Interferon-induced transmembrane protein 3; Gene cloning; Prokaryotic expression; Avian Reovirus.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200377

Diverse uses of feathers with emphasis on diagnosis of avian viral infections and vaccine virus monitoring
Provedor de dados: 89
Autores: Davidson,I.
The large amounts of feathers produced by the poultry industry, that is considered as a waste was explored for possible uses in various industries, such as meals for animals, biofuels, biodegradable plastic materials, combating water pollution and more. That review mentions these uses, but concentrate on the utilization of feathers for the diagnosis of viral infections and for monitoring vaccine viruses in chickens after vaccination. The viral diseases in which diagnosis using nucleic acids extracted from the feather shafts was described are, Marek's disease virus, circoviruses, chicken anemia virus, fowlpox virus, avian retroviruses, avian influenza virus and infectious laryngotracheitis virus. In two cases, of Marek's disease virus and of infectious...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian influenza virus; Avian retroviruses; Infectious laryngotracheitis virus; Circoviruses; Chicken; Chicken anemia virus; Diagnosis of avian viral diseases; Environmental monitoring; Feathers; Fowlpox virus; Marek's disease virus; Malformation of chick feathering; Stability of DNA viruses; Usage of feathers.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300001

DNA Profiles of Salmonella Spp. Isolated from Chicken Products and From Broiler and Human Feces
Provedor de dados: 89
Autores: Tejada,TS; Silva,CSJ; Lopes,NA; Silva,DT; Agostinetto,A; Silva,EF; Menezes,DB; Timm,CD.
ABSTRACT Salmonella species have been isolated from various kinds of food and are accountable for outbreaks of foodborne diseases in humans. This study aimed at identifying the similarities between the DNA profiles of Salmonella isolated from chicken feces, chicken products, and human feces in southern Brazil. Six hundred samples were collected (200 from chicken products, 200 from broiler chicken feces, and 200 from human feces) and tested for the presence of Salmonella. Isolates proven to be Salmonella compatible by biochemical and serological tests were tested by the Polymerase Chain Reaction. Their DNA profiles were then analyzed by PFGE and rep-PCR. Salmonella was isolated from 16 out of 600 analyzed samples, with Schwarzengrund serotype presenting the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mbandaka; Schwarzengrund; Panama; PFGE; Rep-PCR.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400693

Do broilers prefer to eat from a certain type of feeder?
Provedor de dados: 89
Autores: Neves,DP; Nääs,IA; Vercellino,R do A; Moura,DJ de.
This study compared three types of feeders for broilers: Fênix, Tube and Automatic feeders. Bird's feeding behavior and preference were considered in this the evaluation. Preference was assessed by examining birds' behavioral activities, such as eating, standing and lying around the equipments, and meal duration as function of the environmental variables. Data on the behavioral activities and meal size were collected in a broiler commercial farm using a portable video camera, and the direct footages were analyzed. The time spent in each activity, feeding bout duration and time spent near the trough were statistically analyzed using the test of means and medians. Pearson's correlation test was used to evaluate the relationship between ambient environmental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activity; Broiler behavior; Feeder efficiency; Feeding strategic.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300007

Does low-protein diet improve broiler performance under heat stress conditions?
Provedor de dados: 89
Autores: Furlan,RL; Faria Filho,DE de; Rosa,PS; Macari,M.
Nutrition for broilers under high temperatures is extremely important for brazilian broiler chicken industry because the amounts of consumed nutrients and environmental temperature have great effects on bird performance and carcass quality. Among diet nutrients, protein has the highest heat increment; thus, during many years, diets with low protein level were recommended in order to reduce heat production in broiler chickens under heat stress. However, reports have shown that low-protein diets have negative effects on broiler performance when environmental temperature is high, because during heat stress, low food intake associated to a low diet protein induce amino acid deficiencies. Other studies have shown that broilers fed low-protein diets increase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Crude protein; Heat stress; Heat increment; Heat production.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200001

Dried Cassava Residue in Laying Quail Feeding
Provedor de dados: 89
Autores: Almeida,AZ; Eyng,C; Garcia,RG; Nunes,RV; Sangalli,GG; Nunes,KC.
ABSTRACT This study evaluated the performance, egg quality, relative weight of the gastrointestinal organs, and the intestinal morphometry of laying quails fed diets containing levels of dried cassava residue (DCR). A total of 120 150-day-old Japanese quails were distributed in a completely randomized design with five treatments (0.0; 2.5; 5.0; 7.5; and 10.0% of DCR), four replicates, and six birds per experimental unit. The dietary inclusion of DCR did not affect (p&gt;0.05) performance, internal egg quality, yolk color, and the values of villus height, crypt depth, and villus height/crypt depth ratio for the segments of the small intestine. However, a linear increase (p&lt;0.05) was found for eggshell thickness, relative weight of the gizzard, and small...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuff; Coturnix coturnix japonica; Fiber.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100322

Drinking water as a risk factor to poultry health
Provedor de dados: 89
Autores: Amaral,LA do.
In the poultry industry, the use of water with adequate physical, chemical and microbiological quality it is of fundamental importance. Since many birds have access to the same water source, quality problems will affect a great number of animals. The drinking water plays an important role in the transmission of some bacterial, viral and protozoan diseases that are among the most common poultry diseases. Important factors to prevent waterborne diseases in broiler production are the protection of supply sources, water disinfection and the quality control of microbiological, chemical and physical characteristics. Water is an essential nutrient for birds and therefore quality preservation is fundamental for good herd performance. The farmer may prevent many...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiological quality; Poultry industry; Water.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400001

Duckweed in Irrigation Water as a Replacement of Soybean Meal in the Laying Hens’ Diet
Provedor de dados: 89
Autores: Zakaria,HA; Shammout,MW.
ABSTRACT Water lentils (Duckweed [DW])(Lemna gibba), in irrigation ponds, was evaluated by replacing two levels of soybean meal (SBM) on performance and egg quality of laying hens of 54 weeks of age. A total of 72 white Lohmann laying hens were randomly allocated into 3 treatments with 6 replicates/treatment, 4 hens/replicate in a randomized complete block design. Treatments were: control group (DW0%) with (SBM) as the main source of protein, T1 (DW10%) and T2 (DW20%), where duckweed replaced 10% and 20% of SBM for 9 weeks. No significant differences were observed among the dietary treatments in body weight change, feed conversion ratio, egg weight and mortality rate. Replacement with (DW20%) decreased (p&lt;0.05) feed intake, egg laying rate and egg mass....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lemna Gibba; Water quality; Alternative protein source; Egg production; Yolk pigmentation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300573

Duplex Real-Time PCR Using Sybr Green I for Quantification and Differential Diagnosis between Salmonella Enteritidis and Salmonella Typhimurium
Provedor de dados: 89
Autores: Rubio,MS; Penha Fº,RAC; Almeida,AM; Barbosa,FO; Berchieri Jr,A.
ABSTRACT The incidence of foodborne diseases caused by the genus Salmonella spp. in industrialized countries is often high in epidemiological surveys. Obtaining a rapid diagnostic test for identification of bacteria is crucial in order to rapidly implement control measures to contain bacterial spread, to reduce losses in animal production and to avoid risks from food-borne infections to human health. The aim of this study was to standardize duplex real-time PCR using SYBr Green I for differential and quantitative diagnosis of S. Typhimurium and S. Enteritidis. According to the experiment, the melting temperature of 85°C was observed for a 206bp amplified product when S. Enteritidis DNA was added to the reaction. S. Typhimurium DNA showed that the melting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Identification; Melting curve; Non-typhoidal salmonellosis; Standard curve.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100317

Economic effects of avian influenza on egg producers in Turkey
Provedor de dados: 89
Autores: Demircan,V; Yilmaz,H; Dernek,Z; Bal,T; Gül,M; Koknaroglu,H.
This study determined the economic effects of avian influenza on the egg-production sector of Afyon Province, Turkey. Economic indicators were compared before and during the avian influenza outbreak. A questionnaire was conducted with 75 poultry farmers. Farms were divided into three groups according to their size. The profitability of the three farm size groups was compared during two study periods: before and during the avian influenza outbreak. The results indicate that, as compared to previous levels, farms experienced significantly reduced incomes during the avian influenza episode. While net income and profit margin were found to be negative in all three farm groups during the avian influenza period, only group I showed economic loss prior to avian...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian influenza; Economic analysis; Laying hens.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300010

Economic traits and performance of Italian quails reared at different cage stocking densities
Provedor de dados: 89
Autores: Faitarone,ABG; Pavan,AC; Mori,C; Batista,LS; Oliveira,RP; Garcia,EA; Pizzolante,CC; Mendes,AA; Sherer,MR.
This study assessed the effect of different cage stocking densities on the performance of Italian quails in the laying period. Two hundred and sixty four quails with 30 weeks of age and 280g mean body weight were used. Birds were randomly assigned to 96 x 33 x 16 cm cages and distributed in a randomized block design with 4 treatments (12, 15, 18 and 21 quails per cage or 264, 211, 176 and 151 cm² per quail, respectively) and 4 replicates. Birds were given feed and water ad libitum and submitted to the same experimental conditions. The experimental diet was formulated based on NRC (1994) recommendations. There were no significant differences among treatments for feed conversion per egg mass (kg:kg), percentage of broken eggs and mortality. There was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cage stocking density; Economic traits; Italian quail; Performance.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100003

Edible Giblets and Bone Mineral Characteristics of Two Slow-Growing Chicken Genotypes Reared in an Organic System
Provedor de dados: 89
Autores: Eleroğlu,H; Yıldırım,A; Duman,M; Şekeroğlu,A.
ABSTRACT This study was conducted to compare edible giblets weight, tibial bone mineral density (BMD), and bone mineral content (BMC) of two slow-growing broiler genotypes (Hubbard S757; S757 and Hubbard Grey Barred JA; GB-JA) reared with outdoor access, and to determine the relationship between these variables. Day-old chicks (straight-run) of the genotypes S757 (n=120) and GB-JA (n=120) were housed for 98 days. Each genotype was assigned to six pens of 20 birds each. Birds were reared in indoor floor pens and moving shelters with outdoor access (during daylight hours). Absolute body (BW), heart (HW), spleen (SW), liver (LW), gizzard (GW), and abdominal fat pad (AFW) weights of the genotype S757 and male birds were statistically higher than that of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic production; Broiler strain; Bone mineral density; Bone mineral content.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100001

Efeito da Adição do Antioxidante BHT e do Armazenamento Sobre a Qualidade da Farinha de Carne e Ossos Para Frangos de Corte
Provedor de dados: 89
Autores: Racanicci,AMC; Menten,JFM; Iafigliola,MC; Gaiotto,JB; Pedroso,AA.
Este estudo foi desenvolvido com a finalidade monitorar a qualidade da farinha de carne e ossos (FCO), durante o armazenamento prolongado (10 semanas), e avaliar os efeitos da adição do BHT (500mg/kg) a esta farinha. Um lote fresco de FCO (41,12% PB e 9,14% EE) foi dividido em seis partes iguais, sendo uma não tratada (CONTROLE) e as demais tratadas com BHT em diferentes tempos de armazenamento (nos dias 0, 7, 14, 21 e 28: BHT/0, BHT/7, BHT/14, BHT/21 e BHT/28, respectivamente). As FCO foram armazenadas em ambiente diariamente monitorado e sua qualidade foi avaliada por amostragens semanais, com determinação do índice de peróxidos, cujo nível máximo obtido foi de aproximadamente 80meq/kg (CONTROLE). A partir da 4ª semana de armazenamento, foi conduzido um...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Farinha de carne e ossos; Antioxidante; Rancidez oxidativa; Subprodutos de origem animal; Frangos de corte.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200005

Efeito da Densidade de Criação e do Sexo Sobre o Empenamento, Incidência de Lesões na Carcaça e Qualidade da Carne de Peito de Frangos de Corte
Provedor de dados: 89
Autores: Garcia,RG; Mendes,AA; Garcia,EA; Nääs,IA; Moreira,J; Almeida,ICL; Takita,TS.
O experimento foi conduzido nas instalações experimentais da Faculdade de Medicina Veterinária e Zootecnia - UNESP, Campus de Botucatu, SP, Brasil, com o objetivo de avaliar o efeito da densidade de criação e do sexo sobre o empenamento, incidência de lesões na carcaça e a qualidade de carne de peito de frangos de corte. Foram utilizados 1950 pintos de corte sexados, da linhagem Ross, distribuídos em um delineamento inteiramente casualizado, com esquema fatorial com 3 densidades (10, 13 e 16 aves/m²) e dois sexos com 5 repetições, sendo que uma foi destinada exclusivamente para reserva, criados até os 42 dias de idade. Aos 28, 35 e 42 dias foram amostradas 3 aves por repetição para a determinação do empenamento através da porcentagem de penas e 10 aves...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Densidade; Empenamento; Frangos de corte; Lesões na carcaça; Qualidade de peito.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100004

Efeito da Duração do Período de Jejum Pré-Abate Sobre Rendimento de Carcaça e a Qualidade da Carne do Peito de Frangos de Corte
Provedor de dados: 89
Autores: Denadai,JC; Mendes,AA; Garcia,RG; Almeida,ICL; Moreira,J; Takita,TS; Pavan,AC; Garcia,EA.
O objetivo de estudo foi o de avaliar o efeito do jejum de ração e água antes do abate sobre o rendimento de carcaça e cortes, perda de peso vivo, conteúdo do papo, intestino e moela, matéria seca das fezes, bem como volume globular médio e proteína total plasmática do soro. Foram utilizados 600 pintos machos da linhagem Ross, criados até 42 dias de idade, quando foram submetidos a três períodos de jejum (zero, quatro ou oito horas). A duração do período de jejum afetou (p&lt;0,05) a perda de peso vivo, o rendimento de carcaça, carne de pernas, pés, conteúdo do papo e intestino. Aumentando-se o período de jejum até 4 horas, aumentou-se a perda de peso vivo e o rendimento de carcaça e patas, mas diminuiu-se o rendimento de pernas e o conteúdo do papo e do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcaça; Jejum; Maciez; Peito; PH.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200002

Efeito da Energia, Relação Energia: Proteína e Fase de Crescimento Sobre o Desempenho e Composição de Carcaça de Frangos de Corte
Provedor de dados: 89
Autores: Reginatto,MF; Ribeiro,AM; Penz Jr,AM; Kessler,AM; Krabbe,EL.
Dois experimentos (EXP) avaliaram os efeitos da redução de proteína bruta (PB) em dietas com alta (A) (3.200kcal EM/kg) e baixa (B) (2.900kcal EM/kg) energia, sobre o desempenho e composição de carcaças de frangos de corte machos. Os níveis de PB foram reduzidos para obter as relações energia: proteína (E:PB) 139, 146, 153 e 160 (kcal/%) para as dietas iniciais (EXP 1), e 160, 167, 174 e 181(kcal/%) para as dietas de crescimento (EXP 2), em ambos os níveis de energia, mantendo constantes os níveis de MET+CIS e LIS. Todas as aves receberam uma mesma dieta antes (EXP 2) ou após (EXP 1) o fornecimento das dietas experimentais. O fornecimento das dietas A proporcionou melhor desempenho, no entanto resultou em maior deposição de gordura nas carcaças. No EXP 1,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Relação energia:proteína; Frangos de corte; Composição de carcaças; Desempenho.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300005

Efeito da forma física da ração sobre a porosidade, espessura da casca, perda de água e eclodibilidade em ovos de perdiz (Rhynchotus rufescens)
Provedor de dados: 89
Autores: Nakage,ES; Cardozo,JP; Pereira,GT; Queiroz,SA; Boleli,IC.
O objetivo do presente estudo foi avaliar se a forma física da ração (farelada e peletizada) afeta a porosidade e espessura da casca, e porcentagem de perda de água e eclodibilidade de ovos de perdiz. Os ovos foram coletados logo após a postura e separados em diferentes intervalos de peso (35-45g, 46-50g, 51-55g, 56-60g e 61-70g), sendo 10 ovos/classe/ração. O número de poros das cascas foi avaliado nas regiões apical, equatorial e basal dos ovos. Utilizou-se um micrômetro digital para a mensuração da espessura das três regiões da casca dos ovos, a partir dos quais obteve-se a espessura média por ovo. Os ovos para avaliação da eclodibilidade e porcentagem de perda de água do ovo até a transferência para o nascedouro (16º dia) foram pesados, desinfectados,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forma física; Ração; Porosidade; Espessura da casca; Eclodibilidade; Perda de água.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300007

Efeito da Proteína Bruta e de Diferentes Balanços Eletrolíticos das Dietas Sobre o Desempenho de Frangos no Período Inicial
Provedor de dados: 89
Autores: Borges,SA; Laurentiz,AC; Araújo,LF; Araújo,CSS; Maiorka,A; Ariki,J.
Foram realizados dois experimentos utilizando-se 520 pintos machos de um dia para avaliar o efeito da proteína bruta (PB) e do balanço eletrolítico (Na + K- Cl) sobre o desempenho de frangos de corte no período inicial. O Experimento I (1 a 7 dias de idade das aves) foi realizado em baterias, utilizando-se 160 pintos machos "Cobb", no Experimento II (1 a 21 dias) foram utilizados 360 pintos machos "Aviam Farms" que foram alojados em um galpão experimental dividido em box. Nos dois experimentos as aves foram aquecidas com lâmpadas infravermelhas e receberam água e ração à vontade. O delineamento foi inteiramente casualizado, em um esquema fatorial 2 x 2 (PB x balanço eletrolítico - BE), com 5 repetições e 8 aves por unidade experimental no Experimento I e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Balanço eletrolítico; Frangos de corte; Período inicial.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200009

Efeito da Suplementação de Metionina Sobre o Desempenho e a Avaliação de Carcaças de Frangos de Corte
Provedor de dados: 89
Autores: Whitaker,HMA; Mendes,AA; Garcia,EA; Roça,RO; Varolli Jr,JC; Saldanha,EPB.
Um experimento foi conduzido para avaliar os efeitos da suplementação de metionina em dietas de crescimento (22 a 42 dias de idade) sobre o desempenho, rendimento e composição química da carcaça de frangos de corte. Foram utilizados 2000 frangos de corte da linhagem comercial Ross, sexados, distribuídos em um delineamento ao acaso, em esquema fatorial 2 x 5 (sexo e níveis de metionina) com quatro repetições de 50 aves cada. As dietas foram formuladas para conter 100% ,110%, 120%, 130% e 140% dos níveis de metionina recomendados pelo NRC (1994). Aos 42 dias de idade, as aves foram abatidas para avaliar a quantidade de gordura abdominal, bem como o rendimento e a composição química da carcaça. Ao aumentar o nível de metionina da dieta, não houve efeito...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composição química; Frangos de corte; Metionina; Rendimento de carcaça.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100008

Efeito do Nível de Lisina da Dieta e do Sexo Sobre o Desempenho e Rendimento de Carcaça de Frangos de Corte
Provedor de dados: 89
Autores: Almeida,ICL; Mendes,AA; Garcia,RG; Takita,TS; Moreira,J; Garcia,EA.
O experimento foi conduzido nas instalações da Faculdade de Medicina Veterinária e Zootecnia, UNESP, Campus de Botucatu, utilizando-se dois mil pintos de um dia de idade, da linhagem Ross, distribuídos em um delineamento inteiramente casualisado em esquema fatorial 2 x 2 (sexos x níveis de lisina) e criados até 49 dias de idade. As aves foram alimentadas com dietas: inicial (0-21 dias), crescimento (22-42 dias) e acabamento (43-49 dias), contendo 100% dos níveis de lisina recomendados pelo NRC (1994), ou 110% nas rações inicial e de crescimento e 120% na ração de acabamento. Os frangos foram abatidos aos 28, 35, 42 e 49 dias de idade quando os rendimentos de carcaça e de peito foram determinados. Os níveis de lisina não afetaram (p&gt;0,05) o ganho de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Frangos de corte; Lisina; Rendimento de carcaça.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100002

Efeito dos Níveis de Cantaxantina na Dieta Sobre o Desempenho e Qualidade dos Ovos de Poedeiras Comerciais
Provedor de dados: 89
Autores: Garcia,EA; Mendes,AA; Pizzolante,CC; Gonçalves,HC; Oliveira,RP; Silva,MA.
O experimento teve como objetivo estudar os efeitos de níveis de cantaxantina sobre o desempenho e a coloração das gemas dos ovos de galinhas poedeiras. Foram utilizadas 384 galinhas da linhagem Hisex Brown, em um delineamento em blocos ao acaso, contendo seis tratamentos (0, 12, 24, 36, 48 e 60 ppm de cantaxantina), com oito repetições de oito aves por parcela. O período experimental foi de 56 dias. A coleta de ovos foi realizada diariamente e a análise de coloração dos ovos foi efetuada com o abanico colorimétrico da Roche. Durante os 14 dias do período inicial do experimento, a melhor coloração das gemas foi obtida com a adição de 60 ppm de cantaxantina, atingindo-se a cor plateau de 14,3 do leque colorimétrico Roche aos 5,43 dias de inclusão do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coloração da gema; Desempenho galinhas poedeiras; Pigmentos; Qualidade dos ovos.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100007

Efeitos de Diferentes Programas de Alimentação sobre a Ocorrência da Síndrome Ascítica em Frangos de Corte
Provedor de dados: 89
Autores: Albuquerque,R; Fagundes,ACA; Shirama,NN; Moraes,CSD.
Foi estudado, para frangos de corte, mediante a utilização de 3 programas de alimentação (3, 4 e 5 fases de arraçoamento), com níveis nutricionais diferenciados, a ocorrência de ascite , sendo que machos e fêmeas foram criados separadamente durante a época do inverno. Utilizou-se 6 repetições por tratamento, sendo 40 aves por repetição. Avaliou-se o desempenho e a mortalidade (total e por ascite), além de se verificar hipertrofia do ventrículo direito e alteração do hematócrito. Não se obteve diferença significativa apenas para os valores do hematócrito, no entanto, melhores resultados foram atingidos na criação de machos em relação às fêmeas (p&lt;0.05) para peso das aves, consumo de ração e peso dos ventrículos (VD e VT). Obteve-se correlação positiva...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascite; Frangos de corte; Hipertrofia ventricular; Hematócrito; Programas alimentares.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100005

Efeitos de Produto de Exclusão Competitiva na Prevenção dos Efeitos Tóxicos da Ocratoxina A em Frangos
Provedor de dados: 89
Autores: Santin,E; Maiorka,A; Gama,NMSQ; Dahlke,F; Krabbe,EL; Paulillo,AC.
Esse experimento foi realizado com o objetivo de avaliar a ação de produto de exclusão competitiva (EC) sobre os efeitos da ocratoxina A (OA). As aves alimentadas com 2 ppm de OA na dieta reduziram significativamente o consumo de ração e ganho de peso, além de apresentarem pior conversão alimentar quando comparadas às aves não expostas à OA na dieta. O emprego da EC no primeiro dia de vida não minimizou esses efeitos, bem como não afetou os parâmetros zootécnicos estudados. Aves alimentadas com OA apresentaram diminuição nos títulos vacinais contra o vírus da doença de Newcastle, evidenciando-se assim a interferência dessa micotoxina na resposta imune humoral de frangos de corte. De outra forma, a EC não interferiu na resposta imune humoral de frangos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frangos de corte; Exclusão competitiva; Mucosa intestinal; Ocratoxina.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200008

Efeitos dos cloretos de potássio e de amônia sobre o desempenho e deposição de gordura na carcaça de frangos de corte criados no verão
Provedor de dados: 89
Autores: Souza,BB; Bertechini,AG; Teixeira,AS; Lima,JAF; Pereira,SL; Fassani,EJ.
Foram utilizados 240 frangos machos, Hubbard, com peso médio inicial de 1204g, em DIC, com os tratamentos em esquema fatorial 2 x 3 x 2, sendo 2 níveis de KCl (0,0% e 1,2%) x 3 níveis de NH4Cl (0,0%; 0,2% e 0,4%) x 2 níveis de energia (3000 e 3200 kcal EM/kg de ração), com 4 repetições de 5 aves por parcela. Os parâmetros avaliados foram: peso médio (PM), consumo de ração (CR), ganho de peso (GP), conversão alimentar (CA), rendimento de carcaça (RC) e gordura abdominal (GA). Os dados foram analisados pelo programa estatístico Statistical Analyses System (SAS, 1996). As temperaturas máxima e mínima foram de 32,7° e 22,8°C, e o índice de temperatura do globo negro e umidade (ITGU) observado às 9:00 e 15:00 horas foi de 76 e 83, respectivamente. A análise de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cloreto de amônia; Cloreto de potássio; Estresse calórico; Frangos de corte.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300005

Effec t of Freeze-Thaw Cycles on Lipid Oxidation and Myowater in Broiler Chickens
Provedor de dados: 89
Autores: Ali,S; Rajput,N; Li,C; Zhang,W; Zhou,G.
ABSTRACT The present study was carried out to investigate the influence of freezing-thawing cycles (0, 2, 4 and 6) on lipid oxidation and myowater contents and distribution. Nine replicates of chicken breast meat samples were used for each cycle. Lipid oxidation was determined by measuring peroxide value, and malondialdehyde (MDA) concentrations, which reflect thiobarbituric acid reactive substance (TBARS). Color was determined with a digital colorimeter. Muscle moisture contents were determined by drip loss and thawing loss, water holding capacity, and nuclear magnetic resonance (NMR). The results showed that, as the number of freeze-thaw cycles increased, meat redness decreased and MDA and peroxide values increased. Drip loss and thawing loss tended to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freeze-thaw cycles; Chicken meat; Oxidation; Drip loss; Color.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100035

Effect of a Combination of Propionic-Acetic Acid on Body Weight, Relative Weight of Some Organs, Lactic Acid Bacteria and Intestinal pH of Neonatal Broilers
Provedor de dados: 89
Autores: Martínez,Y; Gonzalez,A; Botello,A; Perez,K.
ABSTRACT This study was designed to determine the effect of a combination of propionic-acetic acid on body weight, the relative weight of some organs, lactic acid bacteria, and intestinal pH of neonatal broilers. A total of 60 1-day-old Ross 308® broiler chickens were randomly placed in metabolic cages to two treatments, three replicates, and ten birds per replicates. The treatments consisted of a control diet (CD) and CD + 0.03% of propionic acid and acetic acid in the drinking water at a rate of 4 ml/L of water. The combination of organic acids depressed the body weight in neonatal broilers (p&lt;0.05) and increased the relative weight (p&lt;0.05) of gizzard, proventriculus, small intestine, and liver; also acidified the cecum with a significant decrease...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Organic acid; Cecal beneficial bacteria; Digestive and immune organ; Intestinal pH.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000200300

Effect of acidified drinking water on the recovery of Salmonella enteritidis from broiler crops
Provedor de dados: 89
Autores: Avila,LAF de; Nascimento,VP do; Canal,CW; Salle,CTP; Moraes,HL de S.
Crop is a known source of Salmonella contamination during broiler carcass processing. The effect of drinking water acidification by lactic acid or citric acid or a combination of those with cupric sulfate and d-limonene in the reduction of Salmonella Enteritidis (SE) recovered from the crop of broilers was evaluated. Treatments were administered during 8 hours of preslaughter fasting period (Experiments I and II) and during the last 32 hours of preslaughter (Experiment III). It was observed that acidification reduced water intake when treatments began at preslaughter feed withdrawal, and affected the possible reducing effect of these acids on SE recovering (Experiments I and II). Water intake during preslaughter feed withdrawal was not affected when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Citric acid; Crop; Cupric sulphate; D-Limonene; Lactic acid; Organic acids; Pre-slaughter feed withdrawal; Salmonella enteritidis.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300005

Effect of an Enzymatic Blend and Yeast on the Performance, Carcass Yield and Histomorphometry of the Small Intestine in Broilers from 21 to 42 Days of Age
Provedor de dados: 89
Autores: Sousa,RF; Dourado,LRB; Lopes,JB; Fernandes,ML; Kato,RK; Nascimento,DCN; Sakomura,NK; Lima,SBP; Ferreira,GJBC.
ABSTRACT The present study was conducted to evaluate the performance, carcass yield, and histomorphometry of the small intestine of broilers fed yeast sugarcane supplemented with enzymatic blend from 22 to 42 days of age. Seven hundred broiler chicks were distributed in a completely randomized design in a factorial design (2x3+1), two levels of the enzyme blend (0 and 200 g/ton), three protein levels (0%, 6% and 12%) and a control diet. The level of 6% yeast showed higher feed intake and weight gain after 33 days. From 22 to 42 days there was no significant effect (p&lt;0.05) to the use of yeast in animal performance, carcass yield and cuts. At 42 days an interaction between the factors for width and crypt depth in the duodenum and jejunum, respectively,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cane sugar; Microscopy; Metabolism; Saccharomyces cerevisiae; Xylanase.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200300

Effect of an Enzyme Blend on the Performance, Diet Metabolizability, Phosphorous Retention, and Bone Mineralization of Broilers Fed Diets Containing Defatted Rice Bran
Provedor de dados: 89
Autores: Moraes,ML; Ledur,VS; Kessler,AM; Machado,PHM; Della,MP; Ribeiro,AML.
An experiment was conducted to evaluate the effect of an enzyme blend (EB) on the performance, diet metabolizability, phosphorus (P) retention, and bone mineralization of broilers fed diets containing 10% defatted rice bran (DRB). In total, 432 one- to 38-d-old male Cobb broilers were evaluated according to a completely randomized experimental design in 3 x 2 factorial arrangement. Three diets were tested with two nutrient reductions (NR) in the matrix (standard diet; NR I of 75 kcal/kg ME, 0.1% Ca and 0.1% available P; and NR II of 100 kcal/kg ME, 0.1% Ca and 0.1% available P) with or without the addition of an EB (200 g/t). The coefficients of total tract apparent retention (CTTAR) of the diets and P retention were determined by collecting excreta during...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicken; Defatted rice bran; Enzyme blend; Metabolism; Mineral retention; Performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200191

Effect of an Organic Trace Mineral Premix on the Semen Quality, Testicular Morphology and Gene Expression Related to Testosterone Synthesis of Male Broiler Breeders
Provedor de dados: 89
Autores: Shan,T; Dai,P; Zhu,P; Chen,L; Wu,W; Li,Y; Li,C.
ABSTRACT In order to investigate the effect of organic trace minerals premix (OTM) on the reproductive performance of breeder roosters, a total of 240 San Huang roosters (23 weeks of age) were randomly divided into two treatments with six replicates of 20 roosters each. The first group (n = 120) was fed a basal diet containing an inorganic trace minerals premix (ITM) and the other group (n = 120) was fed the basal diet in which ITM was replaced by OTM. The experiment period was 22 weeks. Semen from one randomly-selected rooster per replicate was collected two weeks after the beginning of the experiment and other 10 times every two weeks. Another rooster per replicate was randomly selected at 30, 35, and 45 weeks of age, and sacrificed. Results showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic trace minerals; San Huang roosters; Semen; Testes.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300481

Effect of Antimicrobials on Salmonella Spp. Strains Isolated from Poultry Processing Plants
Provedor de dados: 89
Autores: Mion,L; Parizotto,L; Calasans,M; Dickel,EL; Pilotto,F; Rodrigues,LB; Nascimento,VP; Santos,LR.
ABSTRACT The routine use of antimicrobials in animal production for the treatment of infections, disease prevention, or as growth promoters is a predisposing factor for the development and dissemination of antimicrobial resistance. In food industries, sanitizers are used for the control of microbial colonization, and their efficacy depends on contact time and on the dilution of the products used. The present study assessed the effect of 12 antimicrobials and four commercial sanitizers on 18 Salmonella spp. strains isolated from poultry processing plants. None of the evaluated antimicrobials was 100% effective against the tested Salmonella spp. strains; however, 94% of the isolates were susceptible to ciprofloxacin, 77% to amoxicillin + clavulanic acid and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobials; Poultry; Sanitizers; Salmonella spp.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200337

Effect of Aqueous Moringa Oleifera (Lam) Leaf Extracts on Growth Performance and Carcass Characteristics of Hubbard Broiler Chicken
Provedor de dados: 89
Autores: Alabi,OJ; Malik,AD; Ng’ambi,JW; Obaje,P; Ojo,BK.
ABSTRACT Two hundred and forty day old broiler chicks were used to investigate the effect of aqueous Moringa oleifera leaf extracts (AMOLE) on growth performance and carcass characteristics of broiler chicken. The birds were randomly allocated into six treatments with four replicates, and each replicate containing 10 broiler chicks; the CRD was used. The treatments contained AMOLE0+ (positive control with antibiotic treatment), AMOLE0- (negative control with ordinary water), AMOLE60 (60 ml/l), AMOLE90 (90 ml/l), AMOLE120 (120 ml/l) and AMOLE150 (150 ml/l) inclusion levels of AMOLE, respectively. Birds on positive control had the highest final body weight and growth rate (2392.00 g and 53.61 g respectively) and the ones on 150 ml/l of AMOLE had the least...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aqueous; Moringa oleifera; Extracts; Growth Performance; Carcass.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200273

Effect of associated vaccines on the interference between Newcastle disease virus and infectious bronchitis virus in broilers
Provedor de dados: 89
Autores: Cardoso,WM; Aguiar Filho,JLC; Romão,JM; Oliveira,WF; Salles,RPR; Teixeira,RSC; Sobral,MHR.
The phenomenon of viral interference between live vaccines against Newcastle Disease and infectious bronchitis has been reported since the 50's and many researchers have reported its prejudicial effects on avian immunization. Therefore, this study evaluated the effect of associated vaccines on the interference between Newcastle disease virus (NDV) and infectious bronchitis virus (IBV) in broilers. There were 400 broiler chicks divided into five groups. The groups were submitted to mono or polyvalent vaccinations against IBV and NDV, except for the non-vaccinated control group (CG). Sera were collected at 35 and 45 days of age and submitted to serologic tests to assess antibody levels. It was observed the occurrence of interference in the immune response...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious bronchitis; Newcastle disease; Vaccines; Viral interference.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300008

Effect of Bacillus subtilis natto on growth performance in Muscovy ducks
Provedor de dados: 89
Autores: Sheng-Qiu,T; Xiao-Ying,D; Chun-Mei,J; Jing-Jing,P; Shan-Shan,L; Jin-Ding,C.
The aim of the present study was to determine whether dietary Bacillus subtilis natto could affect growth performance of Muscovy ducks. A total of 120 hundred Muscovy ducks at the age of 1 day were randomly assigned to four groups (30 Muscovy ducks/group), and fed with diets supplemented with 0% (control group), 0.1%, 0.2%, and 0.4% Bacillus subtilis natto, respectively during the 6-week feeding period. Weight gain, feed intake and feed conversion efficiency of Muscovy ducks were significantly improved by the dietary addition of Bacillus subtilis natto, and the results were more significant in 0.4% dietary Bacillus subtilis natto treatment group; Also, Bacillus subtilis natto reduced Escherichia coli and Salmonella colonies, and increased lactobacilli...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus subtilis natto; Muscovy ducks; Performance; Biochemical parameter Duodenum; Microflora; Immune organ.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300004

Effect of bee pollen on the immunity and tibia characteristics in broilers
Provedor de dados: 89
Autores: Oliveira,MC de; Silva,DM da; Loch,FC; Martins,PC; Dias,DMB; Simon,GA.
This study was carried out to evaluate the effect of bee pollen (BP) levels on the IgG and IgM titers, weight of lymphoid organs, and on the tibia morphometric measures and mineralization in broilers at 21 and 42 days of age. Four hundred birds were used in an entirely randomized design with four treatments (0, 0.5, 1 and 1.5% of BP feed inclusion) and five replicates. At 21 and 42 days of rearing, blood samples were collected for IgG and IgM analysis, as well as lymphoid organs (bursa, thymus and spleen) and the tibiae. There was no effect (p&gt;0.05) of the BP inclusion on IgG titers, bursa and spleen weights, tibia morphometric measures and mineralization at 21 and 42 days, IgM titer at 42 days or thymus weight at 21 days. However, IgM titers at 21 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibodies; Bee products; Lymphoid organs.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400006

Effect of Bone Morphogenetic Protein 6 (BMP6) on Chicken Granulose Cells Proliferation and Progesterone Synthesis
Provedor de dados: 89
Autores: Yang,F; He,L; Luo,B; Ye,F; Cui,C; Yu,X; Xu,H; Zhao,X; Yin,H; Li,D; Zhu,Q; Wang,Y.
ABSTRACT There is increasing evidence that bone morphogenetic protein 6 (BMP6) plays critical roles in regulating various stages of ovarian follicle development in mammals. However, the mechanisms of regulation of BMP6 in the chicken ovary remain unclear. In this study, mRNA and protein expression level of BMP6 in chicken ovarian follicles at different development stages were determined by qRT-PCR and western blot separately. Different concentrations of BMP6 protein and FSH were added to the culture medium, and the effects to proliferation of granulose cells were detected, further effect on expression pattern of progesterone synthesis associated genes were also analyzed by qRT-PCR and Western blotting and the secretion of progesterone was detected by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; BMP6; Granulosa cells; Progesterone; FSH.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200310

Effect of Botanical Extracts on Amino Acid and Fatty Acid Profile of Broiler Meat
Provedor de dados: 89
Autores: Waheed,S; Hasnain,A; Ahmad,A; Tarar,OM; Yaqeen,Z; Ali,TM.
ABSTRACT The objectives of current study were to evaluate the effect of botanical extracts as antioxidants on amino - and fatty acids profile of broiler meat. In total, 200 one-day-old broiler chicks were divided according to a completely randomized design into eight dietary treatments with five replicates of five chicks each. Dietary treatments were: A - positive control (PC) with antibiotics and synthetic antioxidants, B - negative control (NC), C - NC+Trigonellafoenum-graecum, D -NC+Nigella sativa seed, E -NC+Violaodorata, F -NC+Trachyspermumammi, G -PC+Trachyspermumammi+Trigonellafoenum-graecum+Violaodorata, and H -NC+ Trachyspermumammi, Trigonellafoenum-graecum and Viola odorata. Meat amino - and fatty acid contents were analyzed after slaughter at 35...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ajwain; Black cumin; Carcass; Fenugreek; Sweet violet; Omega-3.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300507

Effect of Breed and Caponisation on the Growth Performance, Carcass Composition, and Fatty Acid Profile in the Muscles of Greenleg Partridge and Polbar Breeds
Provedor de dados: 89
Autores: Kwiecień,M; Kasperek,K; Tomaszewska,E; Muszyński,S; Jeżewska-Witkowska,G; Winiarska-Mieczan,A; Grela,ER; Kamińska,E.
ABSTRACT The aim of the study was to determine the impact of­ caponisation of Polbar (Pb) and Greenleg Partridge (Zk) breeds on the production performance, carcass composition, and the nutrient content and fatty acid profile in the breast and thigh muscles and abdominal fat. From 18 weeks of age to the end of the experiment, the Zk capons were significantly heavier than the cocks. The Zk capons had higher (p≤0.05) weight and share of breast and leg muscles. At 24 weeks of age, we noted an increase in the total content of n-3 PUFA and linolenic acid C18:3 in the breast muscles of the Zk and Pb capons. The content of PUFA and n-3 PUFA in thigh muscles and the n6/n3 ratio were reduced in the Pb capons at 24 weeks of age, compared with the Zk cocks....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass quality; Muscle; Polbar; Greenleg Partridge; Capon.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300583

Effect of breeder age on eggshell thickness, surface temperature, hatchability and chick weigh
Provedor de dados: 89
Autores: Gualhanone,A; Furlan,RL; Fernandez-Alarcon,MF; Macari,M.
Two experiments were carried out to study the effect of breeder age on incubation parameters (hatchability, eggshell thickness, egg surface temperature and chick weight). In Exp. 1, fertile eggs (30- and 60-wk-old breeders) were incubated at three different temperatures (36.8, 37.8 and 38.8 ºC). Eggshell surface temperature was measured by attaching a thermocouple to the shell and data were collected in a datalogger every ten minutes. This study was conducted according to a 3 x 2 factorial design (three temperatures and two breeder ages). Data revealed that eggshell surface temperature changed according to incubation temperature, with the main increase occurring between 10 and 13 days of incubation, and that the maximum increase in eggshell surface...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder; Development; Embryo; Temperature; Incubation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100002

Effect of Breeder Age on the Progeny Performance of Three Naked-Neck Chicken Phenotypes
Provedor de dados: 89
Autores: Azhar,M; Mahmud,A; Usman,M; Javed,K; Ishaq,HM; Mehmood,S; Ahmad,S; Hussain,J; Ghayas,A; Abbas,M.
ABSTRACT The study was planned to evaluate the effect of different naked-neck (NN) chicken genotypes and breeder ages on the growth performance of their progenies. A total of 126 chicks, from two breeder ages and three NN varieties, were reared up to 20 weeks of age. A randomized complete block design in factorial arrangement, with six treatments of seven replicates of two females and one male each, was applied. Treatments consisted of three NN varieties (light brown, black, and dark brown) and two breeder age groups (45 and 55 weeks old). Growth performance (body weight gain, feed intake and feed conversion ratio) were evaluated. Higher feed intake was observed in both the male and female progenies of 55-week-old compared with 45-week-old breeders. Light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeder age; Naked-neck chickens; Progeny growth performance; Varieties.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300312

Effect of Broccoli Residues Fermented with Probiotics on the Growth Performance and Health Status of Broilers Challenged with Clostridium Perfringens
Provedor de dados: 89
Autores: Liu,N; Deng,X; Liang,C; Cai,H.
ABSTRACT This study aimed at investigating the effects of broccoli residues fermented with probiotics (BF) on the growth performance, immunity, and gut health in broilers challenged with Clostridium perfringens (C. perfringens). A total of 600 broilers (one day old) were randomly allotted into five treatments with six replicates of 20 birds each and were reared until 42 days of age. The treatments included a positive control (PC, fed a basal diet and reared on uncontaminated litter), a negative control (NC, birds reared on litter contaminated with C. perfringens and fed a basal diet), and NC plus BF at 25, 50 or 75 g/kg of diet. The BF contained yeast 3.1 × 107cfu/g, lactic acid bacteria 9.5 × 106cfu/g and Bacillus subtilis 3.5 × 106cfu/g. Birds in the NC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Broccoli residues fermented with probiotics; Growth performance; Gut health; Immunity.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400625

Effect of Broiler Breeder Age and Glutamine Supplementation on the Development of the Intestinal Mucosa of 7-Day-Old Chicks
Provedor de dados: 89
Autores: Maiorka,A; Silva,AVF; Santin,E; Dahlke,F; Bruno,LDG; Boleli,IC; Macari,M; Trautenmuller,H.
ABSTRACT The aim of this study was to evaluate the possible effects of glutamine and broiler breeder age on the development of intestinal mucosa in broiler chicks during first week of age. For this purpose, 32 one-day-old broiler chicks were distributed according to a completely randomized experimental design in a 2 x 2 factorial arrangement. Treatments consisted of two broiler breeder ages (30 and 60 weeks) and two dietary glutamine supplementation levels (0% and 1%). The morphological development of intestinal mucosa, particularly villus height and crypt depth, was evaluated. The results showed that the supplementation with 1% of glutamine influenced the development of villus height in the duodenum (p=0.009), jejunum (p = 0.006), and ileum (p = 0.001),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder age; Glutamine; Intestinal mucosa; Morphology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100017

Effect of broiler breeder age on pancreas enzymes activity and digestive tract weight of embryos and chicks
Provedor de dados: 89
Autores: Maiorka,A; Santin,E; Silva,AVF; Routman,KS; Pizauro Jr.,JM; Macari,M.
A study was carried out to evaluate the effect of broiler breeder age on the development of the digestive tract of embryos and chicks. Fertilized eggs Cobb from 30 and 60 week-old broiler breeder was utilized in this experiment. The results showed that eggs from older (60 weeks of age) broiler breeders were heavier (p = 0.001) than those from younger (30 weeks of age) broiler breeder. In addition, older broiler breeder had larger (p = 0.001) embryos showing a higher yolk sac (p = 0.001) and higher gastrointestinal tract relative weight (p = 0.007) than those from younger broiler breeder. The activities of pancreatic lipase and trypsin enzymes were also higher in embryos from older broiler breeder than those from younger broiler breeder (p = 0.001 and p =...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder age; Embryo; Enzymatic activity; Gastrointestinal tract.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100003

Effect of Broiler Breeder Age on the Intestinal Mucosa Development of the Embryos at 20 Days of Incubation
Provedor de dados: 89
Autores: Maiorka,A; Silva,AVF; Santin,E; Bruno,LDG; Boleli,IC; Macari,M.
ABSTRACT This study investigated the effect of broiler breeder age on the morphological development of the small intestine broiler embryos (villus height, crypt depth, microvillus height, and villus density) at 20 day of incubation. Eggs obtained from 30- and 60-wk-old broiler breeders were used. The results showed that embryos from older broiler breeders presented longer villi in the duodenum, jejunum, and ileum compared with younger broiler breeders. In addition, embryos from older broiler breeders presented deeper crypts in the jejunum and ileum, longer microvilli in jejunal enterocytes, and lower villus density (microvillus number/mm2) in the duodenum and ileum than younger breeders. These results suggest that breeder age influences the gut mucosa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder age; Embryo; Microvillus; Small intestine; Villus.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600079

Effect of Broiler Crating Density and Transportation Distance on Preslaughter Losses and Physiological Response During the Winter Season in Punjab, Pakistan
Provedor de dados: 89
Autores: Hussnain,F; Mahmud,A; Mehmood,S; Jaspal,MH.
ABSTRACT A study was conducted to determine the impact of crating density and transportation distance on losses and physiological response of broilers during the winter season. For this, ROSS-308 broilers were crated at three densities (i.e., 10, 12, and 15 birds/crate) in plastic crates and transported in three distances (i.e., 80, 160, and 240 km) during the winter season at 3.6 - 9.5ºC temperature and 63.3 - 78.8% relative humidity. Results showed that body weight loss increased significantly with the increase in transportation distance and decrease in crating density, whereas dead on arrival, physical injuries and bruises were not different among different transportation distance and crating density treatments. Significant reduction in carcass and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cold stress; Crating density; Shrinkage; Transportation; Winter.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200306

Effect of cage density on the performance of 25- to 84-week-old laying hens
Provedor de dados: 89
Autores: Rios,RL; Bertechini,AG; Carvalho,JCC; Castro,SF; Costa,VA.
Three experiments were carrie out to evaluate the influence of cage density on the performance of 25- to 84-week-old laying hens. Forty hundred Lohmann-LSL layers were distributed in cages (100x40x 45x50cm) according to a completely randomized experimental design with split plot in time.Three treatments (10, 12, or 14 hens per cage, corresponding, to 450, 375, and 321cm²/bird, respectively), with 15 assessment periods (four weeks each), and eight replicates per treatment were applied. Considering that layer's production cycle is affected by age, three experimental trials (25 to 44; 45 to 64 and 65 to 84 weeks of age) were carried out, and the data collected in each trial was individually analyzed. Increasing cage density significantly reduced feed intake...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds per cage; Cage density; Egg production; Laying hens.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400007

Effect of chick weight, geometric mean diameter and sodium level in prestarter diets (1 to 7 days) on broiler perfomance up to 21 days of age
Provedor de dados: 89
Autores: Ribeiro,AML; Krabbe,EL; Penz Júnior,AM; Renz,SV; Gomes,HA.
Seven hundred and twenty Ross 308 chicks were raised in a controlled environment room, distributed in a factorial design with 3 hatching chick weights (37, 40 and 44 g), 3 geometric mean diameter (GMD) (0.561; 0.783 and 0.997 mm) and 4 total sodium levels (Na) (0.12; 0.24; 0.36 and 0.48%) in the pre-starter diet (1 to 7 days). From 8 to 21 days (d) one single basal diet was used for all treatments. The thirty seven-gram chicks had the smallest yolk sack weight at 4d, smallest body weight (BW) and feed intake (FI) at 7d and 21d, but the same feed conversion (FC) than the other groups of hatching weight. Chicks receiving diet with intermediate GMD had the greatest BW and FI at 7d, but at 21d this effect was no longer seen. The diet with finest particle size...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Average geometric diameter; Broilers; Initial weight; Pre-starter diets; Sodium.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400006

Effect of Cottonseed Meal Fermented with Yeast on the Lipid-related Gene Expression in Broiler Chickens
Provedor de dados: 89
Autores: Nie,CX; Zhang,WJ; Ge,WX; Liu,YF; Wang,YQ; Liu,JC.
ABSTRACT Fermented cottonseed meal (FCSM) is widely used in poultry diets in China. This study was conducted to investigate the effect of FCSM on lipid-related gene expression in broilers. Initially, 180 broiler chickens (21-days-old, equal number of males and females) were randomly divided into three groups, with six pens per group and 10 birds per pen. The chickens in the control group were fed a diet containing unfermented cottonseed meal, and those in the treatment groups were fed with diets including either CSM fermented by Candida tropicalis (Ct group) or CSM fermented by Candida tropicalis plus Saccharomyces cerevisae (Ct-Sc group) until 64 days old. The results revealed that, compared with the control group (p&lt;0.05), the mRNA expression of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fermented cottonseed meal; Fermented feed; Lipid metabolism; Gene expression; Broilers.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000057

Effect of creatine addition in feeds containing animal meals on the performance and carcass yield of broilers
Provedor de dados: 89
Autores: Carvalho,CMC; Fernandes,EA; Carvalho,AP de; Maciel,MP; Caires,RM; Fagundes,NS.
The objective of this study was to evaluate the performance and carcass characteristics of broilers fed exclusively vegetable diets and diets containing animal meal with the addition of creatine or not after day 8. In the experiment, 1080 one-day-old male chicks were distributed according to a completely randomized experimental design into six treatments with six replicates each. A control diet based on corn and soybean meal was formulated, to which animal meals and creatine were included or not. Diets were formulated to contain equal mineral (calcium, phosphorus and sodium) and amino acid (available methionine + cystine, lysine and threonine) levels. The following treatments were applied: A. control (diet based on corn and soybean meal); B. control +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Performance; Blood meal; Carcass yield; Meat and bone meal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300015

Effect of crude protein levels and organic selenium supplementation in the diets fed during the breeding season on reproductive parameters of red-winged tinamous (Rhynchotus rufescens)
Provedor de dados: 89
Autores: Felipe,L; Santos,EC; Tavian,AF; Góes,PAA; Moraes,VMB; Tonhati,H; Boleli,IC; Malheiros,EB; Barnabé,VH; Queiroz,SA.
There is little information on the nutrition of red-winged tinamous (Rhynchotus rufescens) reared in captivity, and their nutritional requirements still need to be determined. This study aimed at determining dietary crude protein requirements and testing four organic selenium supplementation levels in the diet of red-winged tinamous during the breeding season. Birds were housed in a conventional broiler house divided in 16 boxes with one male and three females each. Iso-energy (2800kcal ME/kg) pelleted feeds, based on corn and soybean meal, were supplied in tube feeders. In the first experiment, treatments consisted of four different diets containing different crude protein (CP) contents (15, 18, 21, or 24%) and in the second experiment, the four diets...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg weight; Fertility; Nutrition; Semen quality; Shell thickness.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100010

Effect of deboning time on the quality of broiler breast meat (Pectoralis major)
Provedor de dados: 89
Autores: Souza,PA; Kodawara,LM; Pelicano,ERL; Souza,HBA; Oba,A; Leonel,FR; Norkus,EA; Lima,TMA.
The present study evaluated the effect of different deboning times on the quality of broiler breast meat. Seventy-two broiler breasts were evaluated. They were distributed in a completely randomized experimental design, with six treatments, six repetitions and two birds per parcel. The treatments were denominated as follows: A - deboning immediately after chilling, B - deboning 1 h after chilling, C - deboning 2 h after chilling, D - deboning 3 h after chilling, E - deboning 4 h after chilling, and F - deboning 24 hours after chilling. Lowest pH values (p&lt;0.05) were seen when deboning was performed 24 h after carcass chilling (pH=6.00) in comparison to deboning at 0 h (6.69) and 1 h (6.42) after chilling. R values were inversely proportional to pH...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Deboning time; Meat quality; R value; Shear force.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200010

Effect of diet dilution ratio at early age on growth performance, carcass characteristics and hepatic lipogenesis of Pekin ducks
Provedor de dados: 89
Autores: Wu,L; Guo,X; Fang,Y.
This study was conducted to test the hypothesis that proper diet dilution ratio at early age might improve feed conversion ratio (FCR) and reduce body fat deposition of meat-type ducks. One hundred and fifty 1-day-old male and female White Pekin ducks (44.5±1.0 g) were randomly assigned into three treatments with five replicates (pens) of 10 birds each, respectively representing the experimental diets with 0 (control), 40 or 60% rice hulls inclusion in the basal diet between 8 and 14 d of age. The basal diet was fed before and after this period. The results showed that diluting the diet with 40% rice hulls increased (p &lt; 0.05) feed intake, decreased adjusted (excluding rice hulls) feed:gain and body weight gain of ducks during the diet-dilution period;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass composition; Compensatory growth; Diet dilution; Hepatic lipogenic enzyme activity; Pekin ducks.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100008

Effect of dietary betaine supplementation on the performance, carcass yield, and intestinal morphometrics of broilers submitted to heat stress
Provedor de dados: 89
Autores: Sakomura,NK; Barbosa,NAA; Longo,FA; Silva,EP da; Bonato,MA; Fernandes,JBK.
The objective of this study was to evaluate the effect of betaine in methionine- and choline-reduced diets fed to broilers submitted to heat stress. In total, 1,408 male broilers were randomly distributed into eight treatments, according to 2 x 4 (environment x diet) factorial arrangement, with eight replicates of 2 birds each. Birds were reared environmental chambers under controlled temperature (25-26 °C) or cyclic heat-stressing temperature (25-31 °C). The following diets were tested: positive control (PC), formulated to meet broiler nutritional requirements; negative control (NC), with reduced DL-methionine and choline chloride levels; and with two supplementation levels of natural betaine to the negative control diet (NC+NB1 and NC+NB2). Live...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Environment; Methionine; Temperature.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200005

Effect of Dietary Curcumin on the Antioxidant Status of Laying Hens under High-Temperature Conditions
Provedor de dados: 89
Autores: Nawab,A; Li,G; Liu,W; Lan,R; Wu,J; Zhao,Y; Kang,K; Kieser,B; Sun,C; Tang,S; Xiao,M; An,L.
ABSTRACT Heat stress induces oxidative stress, and reduces body antioxidant metabolite levels, which can affect poultry production performance. Dietary antioxidants protect birds against the adverse effects of heat stress. The effects of increasing concentrations of dietary curcumin on the antioxidant parameters of layers maintained under high-temperature conditions for nine weeks were evaluated. Roman laying hens (n = 336, 22 weeks old, 1420 g BW) were divided into three treatment groups. The first group served as a thermoneutral control (kept at 25 ± 1 °C). The second group was exposed to high temperatures (32 ± 1 °C, 6 h/d), given a basal diet. The third group was further divided into five treatment groups (100, 150, 200, 250, 300 mg/kg Curcumin) fed a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Curcumin; Heat stress; Laying hen; Oxidative damage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200337

Effect of dietary energy and stocking density on the performance and sensible heat loss of broilers reared under tropical winter conditions
Provedor de dados: 89
Autores: Nogueira,WCL; Velásquez,PAT; Furlan,RL; Macari,M.
The objective of the present study was to evaluate the effects of different dietary energy levels and stocking densities on the thermoregulating parameters, live performance, and carcass traits of broilers reared under tropical winter conditions at different times of the day. In total, 1,312 one-d-old male broilers were used. Birds were allotted to three different stocking densities (10, 14 or 18 birds/m²) and two dietary energy levels (2900 or 3200 kcal ME/kg). The following parameters were evaluated:radiant heat load (RHL), rectal temperature (RT), feed intake (FI), weight gain (WG), feed conversion ratio (FCR), livability (L), production of live weight per area (WA), and carcass yield. Stocking density did not affect sensible heat loss (SRL) or rectal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Housing environment; Production capacity; Sensible heat; Broiler; Radiation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100009

Effect of dietary energy concentration on performance parameters and egg quality of white leghorn laying hens
Provedor de dados: 89
Autores: Ribeiro,PAP; Matos Jr,JB; Lara,LJC; Araújo,LF; Albuquerque,R; Baião,NC.
An experiment was carried out with 1200 23-week-old white Dekalb commercial laying hens to investigate production responses, egg quality, and energy utilization of laying hens fed different dietary energy levels at the beginning of lay. Birds were housed and divided in five groups of 240 birds according to dietary apparent metabolizable energy corrected for nitrogen (AMEn): 2700 kcal/kg; 2775 kcal/kg; 2850 kcal/kg; 2925 kcal/kg; and 3000 kcal/kg, with six replicates of 40 birds each. Birds were fed the experimental diets based on corn and soybean meal for 17 weeks. Diets were iso-nutritive, except for energy level. Increasing AMEn levels had a negative effect on egg production and egg mass (p≤0.05). AMEn levels did not influence body weight, egg weight, or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy conversion; Egg quality; Laying hens.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400007

Effect of dietary fiber and genetic strain on the performance and energy balance of broiler chickens
Provedor de dados: 89
Autores: Krás,RV; Kessler,AM; Ribeiro,AML; Henn,JDi; Santos,II dos; Halfen,DP; Bockor,L.
The experiment was conducted to evaluate the effect of dietary fiber on the performance and energy balance of broiler chickens of a fast-growing strain (Cobb500) and a slow-growing strain (Label Rokens during the period of 1 one to 42 days of used In total, 360 male broilers (240 fast-grorain and 120 slow-grtrain)were, housed in collective cages. A completely randomized experimental dewith in a 3x2 factorial arrangement was applied, consisting of three groups of birds (slow-growing - SG; fast-growing fed ad libitum - FGAL; and fast-growing pair-fed with SG broilers - FGPF) and two iso-protein dis (a 3100 kcal ME/kg low-fiber diet and a 2800 kcal ME/kg high-fiber diet- Hwith containing 14% wheat bran and 4% oat hulls). Dietary fiber level did not affect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cobb; Label Rouge; Pair-fed; Wheat bran.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100003

Effect of dietary fiber, genetic strain and age on the digestive metabolism of broiler chickens
Provedor de dados: 89
Autores: Krás,RV; Kessler,A de M; Ribeiro,AML; Henn,JD; Bockor,L; Sbrissia,AF.
In this study, 360 male broilers, out of which 240 of a fast-growing strain (Cobb500), and 120 of a slow-growing strain (Label Rouge), were used to evaluate the effect of dietary fiber on digesta transit time and digestive metabolism during the period of 1 to 42 days of age. A completely randomized experimental design with a 3x2 factorial arrangement was applied, consisting of three groups of birds (slow-growing - SG; fast-growing fed ad libitum - FGAL; and fast-growing pair-fed with SG broilers - FGPF) and two iso-protein diets (a 3100 kcal ME/kg low-fiber diet - LFD- and a 2800 kcal ME/kg high-fiber diet - HFD- with 14% wheat bran and 4% oat hulls). HFD-fed birds presented lower ME retention (p &lt; 0.001) and lower dry matter metabolizability (DMM) (p...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Fiber; Metabolism; Pair-fed; Strain.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200003

Effect of Dietary Frying Fat, Vegetable Oil and Calcium Soaps Of Palm Oil on the Productive Behavior and Carcass Yield of Broiler Chickens
Provedor de dados: 89
Autores: Villanueva-Lopez,DA; Infante-Rodríguez,F; Nájera-Pedraza,OG; Barrios-García,HB; Salinas-Chavira,J.
ABSTRACT Vegetable oils (VO) and animal fats are conventional lipid sources used in feed formulations. Frying fats (FF) and calcium soaps of palm oil (CaSPO) are low-cost lipid sources. This study evaluated the productive performance of broiler chickens fed diets with CaSPO in substitution for VO or FF. Two hundred, 1-day old male broiler chickens were allocated in a randomized design with factorial arrangement (22). Diets included 2 lipid sources (FF and VO) and 2 CaSPO levels (0 and 50%). The study had two phases (starter and finisher) of 21 days each. For the starter phase there was no effect (p&gt;0.05) of dietary treatments on the chickens’ productive performance. For the finisher phase birds fed diets with FF had higher feed intake and feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicken; Calcium soaps; Palm oil; Recycled fat; Vegetable oil.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400310

Effect of Dietary Inclusion of Leucaena (Leucaena leucocephala) and Banana Flour (Musa cavendishii) on Performance of Laying Hens
Provedor de dados: 89
Autores: Dumorné,K.
ABSTRACT The aim of the present study was to evaluate the effects of Leucaena (Leucaena leucocephala) and Banana flour (Musa cavendishii) on performance of laying hens. Fifty laying hens (3 months of age) were randomly distributed into five experimental groups, each consisting of 10 laying hens. The groups were control (10 laying hens); L6 (Leucaena, 6 g/day (10 laying hens)); L8 (Leucaena, 8.0 g/day (10 laying hens)); L10 (Leucaena, 10 g/day (10 laying hens)); and L12 (Leucaena, 12 g/day (10 laying hens)), in addition, five levels of Banana flour control (10 laying hens); 25% (10 laying hens); 50%, (10 laying hens); 75% (10 laying hens); and 100% (10 laying hens), were assessed respectively. The experimental period lasted from 4 to 8 weeks. The results of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal diet; Banana flour; Laying hens; Leucaena.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400725

Effect of Dietary Inclusion of Sodium Bicarbonate on Digestibility of Nutrients and Immune Response in Caged Layers During the Summer
Provedor de dados: 89
Autores: Abbas,G; Ahmad,F; Saeed,M; Ayasan,T; Mahmood,A; Yasmeen,R; Kamboh,A.
ABSTRACT The aim of this project was to investigate the effect of dietary inclusion of sodium bicarbonate (NaHCO3) on nutrient digestibility and immune response of caged layers during summer when the temperature exceeds 40 ˚C. For immune response trial, White Leghorn layers (n=160; 24 weeks old) were purchased from a poultry farm and were divided into five treatment/diets groups (4 replicate/treatment). Diet A, was without NaHCO3 and served as control whereas, diets B, C, D, and E contained 0.5, 1.0, 1.5 and 2.0% NaHCO3, respectively. All these birds were vaccinated against Newcastle disease (ND) virus at the start of the experiment and thereafter with one-month intervals. Blood samples were collected from two birds/replicate at 10 days post vaccination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat stress; Layers; Newcastle disease; Nutrient digestibility; Sodium bicarbonate.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200339

Effect of Dietary Lysine Regimens on Growth Performance and Meat Composition in Aseel Chicken
Provedor de dados: 89
Autores: Hussain,M; Mahmud,A; Hussain,J; Qaisrani,SN.
ABSTRACT A study was designed with the objective, to evaluate the effect of dietary lysine (Lys) regimens on growth performance and meat composition of Aseel chicken. In total, 540 day old chicks, 180 from each variety, were randomly assigned to 9 experimental groups in a 3 (Varieties: Mianwali (MW), Peshawari (PW), and Lakha (LK)) × 3 (Lys regimens: L1, L2 and L3:1.35, 1.30 and 1.25%) factorial arrangement under randomized complete block design (RCBD) with sex as block. Each experimental group was replicated 6 times with 10 birds in each with average weight of 29 gram. Feed intake (FI), weight gain (WG) and feed:gain ratio (F:G) parameters of growth performance and Dry Matter (DM), Ash, Crude Protein (CP) and Ether Extract (EE) parameters of meat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino Acid; Aseel Chicken; Growth Performance; Meat Composition.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200203

Effect of dietary organic selenium and zinc on the internal egg quality of quail eggs for different periods and under different temperatures
Provedor de dados: 89
Autores: Fernandez,IB; Cruz,VC; Polycarpo,GV.
The objective of this study was to evaluate the internal quality of eggs of Japanese quails fed diets supplemented with chelated selenium and zinc. The experiment was carried out for 120 days, and 144 birds were divided in random blocks into four treatments (control; 0.3 ppm Se; 60 ppm Zn and 0.3 ppm Se + 60 ppm Zn). Ten, 14, 18, and 22 weeks after the beginning of lay, eggs were collected and stored under two different temperatures (environmental temperature or refrigeration) and for 10, 20, and 30 days. Eggs were analyzed for: Haugh units (HU), albumen height (AH), yolk index (YI), and albumen index (AI). Parameters were only statistically influenced by the interaction between dietary treatment and storage time. It was concluded that the addition of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Organic trace minerals; Quails; Storage; Temperature.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100006

Effect of dietary phytase suplementation on the performance, bone densitometry, and phosphorus and nitrogen excretion of broilers
Provedor de dados: 89
Autores: Assuena,V; Junqueira,OM; Duarte,KF; Laurentiz,AC; Filardi,RS; Sgavioli,S.
This experiment was carried out to evaluate the effects of the inclusion of different levels of phytase on broiler performance, bone densitometry, and phosphorus and nitrogen excretion. Nine hundred and sixty one-day old broilers, 50% males and 50% females, were distributed in a completely randomized experimental design into five treatments and six replicates 32 birds each. The treatments consisted of a control diet and four diets with the addition 25, 50, 75, and 100 g/ ton of phytase (250, 500, 750 and 1000 FTU of phytase/kg fed). Diets were formulated to contain equal nutritional levels, and considered the phytase product nutritional levels. In general, the addition of phytase resulted in a linear decrease in broiler performance. However, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineralization; Feed conversion ratio; Feed intake; Weight gain.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100005

Effect of Dietary Supplementation of Full-Fat Canola Seeds on Productive Performance, Blood Metabolites and Antioxidant Status of Laying Japanese Quails
Provedor de dados: 89
Autores: Ibrahim,NS; Sabic,EM; Abu-Taleb,AM; Abdel-Moneim,AE.
ABSTRACT The present study was carried out to evaluate the effects of dietary supplementation of different levels of full-fat canola seeds (FFCS) on productive performance, blood metabolites and antioxidant status of laying Japanese quails. A total of 360, 8-week-old quails were divided into a completely randomize design with 4 dietary experimental groups and three pens each, each pen containing 30hens. The experimental groups were fed iso-caloric and iso-nitrogenous diets supplemented with FFCS at levels 0, 50, 100 and 150 g/kg diet. The experiment lasted 16 weeks. All supplemented groups showed significant effects in the final body weight (g), hen feed consumption (g/hen/day), egg mass (g egg/hen/day) and hen-day egg production (%). However, egg weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Full-fat canola seed; Performance; Blood metabolities; Antioxidant; Laying quail.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100318

Effect of dietary supplementation of marigold pigment on immunity, skin and meat color, and growth performance of broiler chickens
Provedor de dados: 89
Autores: Rajput,N; Naeem,M; Ali,S; Rui,Y; Tian,W.
Marigold flower extract, a natural pigment, was used to determine its effect on carcass and skin pigmentation, immunity and growth performance of broiler chickens. Two hundred and forty 1-day-old Arbor Acres broiler chicks were randomly distributed into four treatment groups with six replicates in a randomized block design. Birds were fed basal diet for 42 d with or without supplementation of marigold flower extract at various concentrations, i.e., 0 (MG0, control), 100 (MG100), 150 (MG150) and 200 (MG200) mg/kg of feed, respectively. Feed intake and live body weight were weekly recorded. Carcass and shank color, and antibody titers against Newcastle and Influenza viruses were measured. Results showed that marigold flower extract significantly (p&lt;0.05)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibody titer; Broiler performance; Marigold extract; Pigmentation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400009

Effect of different dietary concentrations of Amino Acids on the performance of two different Broiler Strains
Provedor de dados: 89
Autores: Ebling,PD; Ribeiro,AML; Trevizan,L; Silva,ICM da; Kessler,A de M; Rubin,LL.
Four Nutritional Programs (NP) used in the Brazilian poultry industry were tested in two broiler strains (Cobb 500 and Ross 308). NP varied in the concentrations of their main essential amino acids (AA) and were classified as Low, Regular, High and Mixed (high AA concentrations up to 21 days and regular concentrations after that). Minimum digestible Met+Cys/Lys, Thr/Lys, Arg/Lys, Ile/Lys, and Val/Lys ratios were 0.74, 0.64, 1.05, 0.65 and 0.75, respectively, in all NP, and no minimum amount of CP was fixed. There were no interactions between strain and NP for any of the evaluated responses. From 1 to 47 days of age, birds fed the Low NP presented lower average body weight and body weight gain (BWG). The high NP allowed for better feed conversion ratio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Economic evaluation; Brazilian nutritional programs; Carcass yield.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400008

Effect of Different Dietary Threonine Levels on Optimal Growth Performance and Intestinal Morphology in 1-14 Days Old Ross 308 Broilers
Provedor de dados: 89
Autores: Najafi,R; Ahmar,R; Tazehkand,GN.
SUMMARY This experiment was carried out to evaluate the effects of four levels of dietary threonine (Thr) supplementations on growth performance, gut size and histomorphometric alterations of small intestines in broiler chicks in 1-14 days. Two hundred eighty-eight Ross 308 one-day-old male broiler chicks were randomly assigned to four treatments with six replicates (12 birds per replication) received a common diet based on corn, wheat and soybean meal that met nutrients requirement of Ross 308. Birds were fed dietary treatments consisting of four levels of standardized digestible (SD) Thr: control diets (Basal diets) containing 0.65% SD Thr, 0.89% SD Thr (nutrients requirement of Ross 308), 0.93% and 0.97% SD Thr. Body weight gain (BWG), feed intake (FI)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino Acid; Chicken; Diet Requirement; Immunity; Nutrition.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500059

Effect of different electrolyte balances in broiler diets
Provedor de dados: 89
Autores: Arantes,UM; Stringhini,JH; Oliveira,MC; Martins,PC; Rezende,PM; Andrade,MA; Leandro,NSM; Café,MB.
The aim of this study was to evaluate the performance, tibial density and mineral content, Na, K ,and Cl serum levels, and dry matter content of the litter of broilers fed diets with different levels of dietary electrolyte balances. Two experiments were carried out: during the starter phase (7 to 21 days of age, 960 broilers) and during the growe phase (22 to 38 days of age, 816 broilers). In both experiments, a completely randomized design with four treatments based on dietary electrolyte balance values (200, 240, 280 and 320 mEq/kg of diet) with four replicates was applied. Birds and diets were weighed when birds were seven, 14 and 21 days of age in the first experiment, and 22 and 38 days of age in the second experiment in order to determine weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone density; Performance; Potassium; Poultry litter; Sodium.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300010

Effect of different levels of methionine, protein and tallow on the productive performance and egg quality of laying hens in the late-phase production
Provedor de dados: 89
Autores: Nassiri Moghaddam,H; Kazemi Fard,M; Agah,MJ; Hosseini,SJ; Mirakzehi,MT.
An experiment was conducted to determine the effects of different levels of methionine, protein and tallow on productive performance and egg quality of laying hens in the late phase of production. A completely randomized design with a 3×2×2 factorial arrangement, with three levels (0.34, 0.31, and 0.27%) of methionine (MET), two levels (12.8 and 14.7%) of protein (PRO) and two levels (1 and 3%) of tallow (TAL) with constant level of linoleic acid (1.55 ± 0.02%), was used. A number of 144 Hi-Line W-36 layers from 70 to 76 wk of age was randomly distributed into 12 treatment groups with 4 replicates of 3 hens each. Egg production and egg weight were daily recorded and feed intake and egg quality traits were recorded every 2 wk. There was a significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell; Egg weight; Fat; Specific gravity; Sulfur amino acids.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200010

Effect of different probiotics on broiler carcass and meat quality
Provedor de dados: 89
Autores: Pelicano,ERL; Souza,PA de; Souza,HBA de; Oba,A; Norkus,EA; Kodawara,LM; Lima,TMA de.
The present work evaluated the effect of different probiotics on carcass and meat quality of broilers. One thousand and fifty male Cobb chicks were distributed at one day of age in a randomized design with 3 x 2 + 1 factorial arrangement (3 probiotics, 2 levels of probiotics in drinking water and 1 negative control group), using 5 replications with 30 birds. Carcass yield was higher (p&lt;0.05) in control birds. Nevertheless, the groups fed with probiotics showed higher (p&lt;0.01) leg yield at 45 days of age. There was a significant decrease in color (lightness) and increase in pH of breast muscle 5 hours after slaughter in the probiotics treated birds. In the sensory analysis, meat flavor and general aspect 72 hours after slaughter were better when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carcass yield; Meat quality; Organoleptic characteristics; Probiotics.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300009

Effect of Different Thermal and Non-Thermal Processing Methods on Chemical Composition, Quality Indicators and Apparent Nutrient Digestibility of Full-Fat Soybean
Provedor de dados: 89
Autores: Lehmali,IF; Jafari,MA.
ABSTRACT The aim of this research was to study the effect of thermal and non-thermal processing methods on chemical composition, quality indicators and apparent digestibility of soybean nutrients. For this, four processing methods (unprocessed, extruded, thermal, and gamma radiation) were applied on two soybean varieties (Katol &amp; Caspian). Rations were formulated based on kinds of soybean (processed and unprocessed). The experiment was continued using 600 male Ross broiler chickens during 3 feeding phases (starter, grower, and finisher). Traits were measured and analyzed with the Lsmeans procedure by SAS software. The results showed the interaction effects of soybean varieties and processing methods were significant on the crude fiber, calcium, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Processing; Soybean; Thermal; Varieties.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400327

Effect of different vitamin D sources and calcium levels in the diet of layers in the second laying cycle
Provedor de dados: 89
Autores: Nascimento,GR do; Murakami,AE; Guerra,AFQM; Ospinas-Rojas,IC; Ferreira,MFZ; Fanhani,JC.
This study evaluated the effects of different sources of vitamin D and calcium levels on performance, egg quality and bone strength of hens in the second production cycle. A total of 384 Hy-Line W36 birds with 80 weeks of age were used, alloted into 3 x 4 factorial design (sources of vitamin D: cholecalciferol; 25(OH)D3 and 1.25(OH)2D3 x calcium levels: 2.85, 3.65; 4.45 and 5.25%) with four replicates and eight birds each. The performance was evaluated for three cycles of 28 days each, egg quality was evaluated in the last four days of each cycle and bone strength on the last day of the experimental period. There was no interaction (p &amp;gt; 0.05) between the different sources of vitamin D and calcium levels in all parameters evaluated. There was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cholecalciferol; 25 hydroxycholecalciferol; 1.25 dihydroxycholecalciferol.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200005

Effect of Different Zilpaterol Hydrochloride Levels and Feeding Methods on the Growth Performance, Carcass Traits and Blood Parameters of Male Japanese Quails During Two Weeks of the Finishing Period
Provedor de dados: 89
Autores: Mohammadi-Arekhlo,M; Towhidi,A; Moravej,H; Sharafi,M.
ABSTRACT The objective of this study was to determine the effects of different zilpaterol hydrochloride (ZH) levels and feeding methods on the growth performance and carcass traits of Japanese quails. In this trial, 224 male quails with 34 days of age were distributed into seven treatments. A factorial arrangement with three ZH levels (0.2, 0.225, and 0.25 mg zilpaterol/kg of live weight−1) × two feeding methods (ZH supplementation daily or every two days) plus a control treatment (no ZH supplementation) was applied. The weight gain of birds fed ZH every two days was significantly higher than those fed ZH daily during the period of 41-47 days (p=0.03). During the period of 34-40 days, ZH-supplemented birds presented higher weight gain (p&lt;0.001) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: B-adrenergic agonists; Body weight; Meat quality; Japanese quails.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400567

Effect of Disinfectants and Pesticides Used in Poultry Houses on Beauveria Bassiana (Bals.) Vuill.fungus
Provedor de dados: 89
Autores: Alves,LFA; Mamprim,AP; Formentini,MA; Martins,CC; Pinto,FG.
ABSTRACT This study aimed at evaluating the effect of the use of disinfectants and insecticides recommended for the control of pathogens and insects in poultry houses on the biological parameters of the entomopathogenic fungus Beauveria bassiana strain Unioeste 4. Disinfectants and insecticides were used at recommended concentration (RC), half the recommended concentration (0.5 RC), and twice there commended concentration (2RC). All treatments were sprayed on the fungus previously inoculated on PDA culture media. Germination, colony forming unit (CFU), vegetative growth and conidial yield were evaluated. Germination was the most affected parameter by insecticides, with reduction of up to 25% using Couro Limpo and Cypermil products. Cypermil also reduced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entomopathogenic fungus; Compatibility; Associated control; Animal production.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200283

Effect of dried extract of boldo (Peumus Boldus Mol.) on growth and oxidative tissue status of broiler chickens
Provedor de dados: 89
Autores: Fellenberg,MA; Delporte,C; Backhouse,N; Peña,I; Speisky,H.
The addition of antioxidants to broiler diets has been shown to enhance their antioxidant status. Since boldo (Peumus boldus Mol.) leaves contain highly antioxidant molecules, a dried extract of boldo (DEB) was added to broiler diets to improve "in vivo" antioxidant tissue status and to favor animal growth. A DEB standardized for antioxidant content was prepared and added to poultry diets at three different levels (low-DELB, medium-DEMB, and high-DEHB) for a period of 6 weeks. A single negative control (no added antioxidant) and one positive control (supplementation with 200 mg/kg vitamin E) were used. Plasma antioxidant capacity (PAC), thiol content (GHS), and basal and induced lipoperoxidation of liver, leg and breast tissues were determined in birds at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidants; Boldo; Broiler; Oxidative stress.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400009

Effect of Early Post-Hatch Feeding Time on Growth and Carcass Performance of Mule Ducks Reared Intensively in the Humid Tropics
Provedor de dados: 89
Autores: Willians,MA; Lallo,CHO.
ABSTRACT A prolonged period without feed access negatively impacts the growth and development of poultry. This study evaluated the effect of early post-hatch feeding times on the growth and carcass performance of Mule ducks reared intensively in the tropics. A total of 48 Mule ducklings were obtained from a local hatchery and assigned in a completely randomized design to 4 treatments based on 4 feeding regimes, (T) as follows: T1 3hrs, T2 24hrs, T3 36hrs and T4 48hrs post-hatch. On day 1 the ducklings were individually weighed, followed by weekly weighing until harvest at 63 days. Feed and feed refusal was measured daily for a period of 63 days. At harvest the body weight at slaughter, eviscerated and hot carcass weight, as well as the initial pH and pH24...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass evaluation; Feed conversion; Growth performance; Mule ducklings; PH.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300200

Effect of Egg Position in the Incubator on Broiler Hatching Results
Provedor de dados: 89
Autores: Boz,MA.
ABSTRACT This study investigated whether the effect of egg location during incubation on hatching results in broiler eggs. For this purpose, a total of 756 broiler eggs were incubated for 21 days. The eggs were divided near the door and near the fan, and distributed on top (216 eggs), 324 in the middle (324 eggs), and in the bottom (216 eggs) according to a completely randomized design (CRD). As a result of this study, no significant effect of egg location on incubation yield, hatchability, and embryonic mortalities was found (p&gt;0.05). In some locations the eggs which were closer to the fan had generally higher hatchability (top fan 86.9%, middle fan 69.6%, and bottom fan 81.7%). The value of the incubation yield was among 67.3-85.2%. Embryonic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incubator temperature; Incubator position; Hatchability; Broiler hatching egg; Embryonic mortalities.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400325

Effect of egg storage length on hatchability and weight loss in incubation of egg and meat type Japanese quails
Provedor de dados: 89
Autores: Romao,JM; Moraes,TGV; Teixeira,RSC; Cardoso,WM; Buxade,CC.
The quail raising in Brazil has increased through the last years and the incubation procedures are important to maintenance and improvement of quail egg production. To obtain a sufficient number of eggs to fill an incubator, eggs are usually accumulated in storage over a period from 1 day up to 3 weeks before incubation. The objective of this research was to verify the effect of egg storage on hatchability and egg weight loss for two lineages of Japanese quails. Sixty four Japanese quails were divided in two groups: G1 (n=32) for meat production and G2 (n=32) for egg production. They were used for serial egg collections that were performed every day, during 15 consecutively days, totaling 600 eggs. After collection they were placed in refrigerated room...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg weight loss; Incubation; Japanese quail; Storage.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300001

Effect of Egg Weight and Patio Strategies on Hatching Traits and Subsequent Performance of the Broilers
Provedor de dados: 89
Autores: Yameen,RMK; Hussain,J; Mahmud,A; Saima,.
ABSTRACT Objectives of the present study were to assess the hatchery based interventions and their impact on hatching traits and subsequent performance of broilers. In total, 3000 eggs of Hubbard broiler breeders were equally divided into Small (50-55 g), Medium (56-61 g) and Large (62-70 g) eggs. The eggs from each category were distributed into 20 trays each containing 50 eggs. Each tray was considered as a replicate. At the end of the 18th day of incubation, the eggs of each weight category were divided into four different patio strategies i.e. P0, P3, P5 and P7 where feed and water were provided to the chicks for 0, 3, 5 and 7 days in the hatcher followed by conventional rearing. Data were collected for hatch window, hatching traits, growth, physical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg weight; Patio; Hatch window; Growth; Welfare; Blood biochemistry.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100304

Effect of Egg Weight on External and Internal Qualities, Physiological and Hatching Success of Japanese Quail Eggs (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Hegab,IM; Hanafy,AM.
ABSTRACT This experiment was conducted to evaluate the effect of egg weight and egg physical characteristics on embryonic development, hatchability, and hatchling weight of Japanese quails (Coturnix coturnix japonica). In total, 689 eggs were classified in two categories: small (&lt;13.5 g) or large (≥13.5 g), and different external eggshell and internal quality traits were measured. On days 6 and 14 of incubation, tissue triiodothyronine (T3) and thyroxine (T4) were extracted from embryos in both egg sizes and analyzed. Relative to internal egg-quality traits, large eggs had significantly higher yolk height, yolk diameter, yolk weight, albumen height, and albumen weight than small eggs (p≤0.01). However, Haugh unit score (p=0.27) was not significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg size; Egg quality; Hatchability; Hormones; Parameters.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300300

Effect of Egg Weights on Hatching Results, Broiler Performance and Some Stress Parameters
Provedor de dados: 89
Autores: Duman,M; Şekeroğlu,A.
ABSTRACT The present study was conducted to investigate the effect of hatching egg weight of broiler parent stocks on hatching results, chick performance, carcass characteristics, internal organ weights and some blood stress parameters. Eggs were divided into 3 egg weight groups (55.0 to 60.0 g (light), 60.1 to 65.0 g (medium) and 65.1 to 70.0 g (heavy)) for the experiments. After incubation, mixed-gender broiler chicks from the hatcher were placed into 27 grower pens (2x1 m) with 9 replications for 3 weight groups by using randomized block design. Each pen had 25 broiler chicks. Therefore, 225 chicks were used for each group and 675 chicks in total. The experiment was designed with nine replicates. Chi-square test, variance analysis test and Duncan...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asymmetry; Chicken; Hatchability traits; Growing performance; Tonic immobility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200255

EFFECT OF EGGSHELL COLOR ON THE EGG CHARACTERISTICS AND HATCHABILITY OF GUINEA FOWL (NUMIDA MELEAGRIS) EGGS
Provedor de dados: 89
Autores: Eleroğlu,H; Yıldırım,A; Duman,M; Okur,N.
ABSTRACT The objective of this study was to determine the effects of eggshell color of guinea fowl (Numida meleagris) eggs on eggshell quality and hatchery results. The highest mean grey value (MGV), integrated density (ID), lightness (L*) and Hue angle (H*) values were obtained in eggs with lighter eggshell color. The effects of color difference (DE*) value levels on egg characteristics were evaluated. Eggshell color presented different (p&lt;0.01) MGV, ID, L*, redness (a*), yellowness (b*), H* and Chroma (C*) values. Eggs with lighter color presented thicker eggshells and lower egg weight loss on day 25 of incubation (p&lt;0.05) compared with intermediate and darker eggs. Eggshell color did not have any significant effect on fertility and hatchability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Guinea fowl (Numida meleagris ); Breeder; Eggshell color; Hatchability.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500061

Effect of Embryo Thermal Stimulation on the Serum Levels of Immunoglobulins and Corticosterone, and Organ Histopathology of 1 day-old Broilers
Provedor de dados: 89
Autores: Flores,F; Nääs,IA; Garcia,RG; Quinteiro,WMQ; Souza,LI.
ABSTRACT Embryo thermal stimulation has been studied as a means to promote epigenetic changes and to improve broiler health and performance. This study aimed at evaluating immunoglobulin (IgM, IgG, and IgA) titers, serum corticosterone levels, and organ integrity of day-old male Cobb(r) and Ross(r) broilers. Embryos were submitted to hot and cold stimuli (thermal stimulation) on days 14-18 of incubation. The thermal manipulation treatments did not affect immunoglobulin titers of 1 day-old Cobb(r) or Ross(r) chicks, and caused severe bursal lesions (scores 3 and 4) in both strains. However, serum corticosterone levels of Cobb(r) chicks were higher when embryos were submitted to hot stimulus (+1.39ºC) compared with cold stimulus (+36 ºC). Serum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corticosterone; Caloric stress; Immunoglobulins; Termmanipulation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600071

Effect of energy intake on performance and carcass composition of broiler chickens from two different genetic groups
Provedor de dados: 89
Autores: Rosa,PS; Faria Filho,DE; Dahlke,F; Vieira,BS; Macari,M; Furlan,RL.
In order to evaluate the effect of energy intake and broiler genotype on performance, carcass yield, and fat deposition, 600 one-day-old male chicks from two different genetic groups (AgRoss 308 - commercial line and PCLC - Embrapa non-improved line) were fed diets with different metabolizable energy level (2950, 3200 and 3450 kcal/kg). A completely randomized experimental design in a 2X3 factorial arrangement with four replications of 25 birds per treatment was applied. In order to ensure different energy intake among treatments within each strain, feed intake was daily adjusted by pair-feeding schemes. AgRoss 308 broilers had better performance and carcass yield, and presented lower abdominal fat deposition rate. In both genetic groups, the highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Broiler chickens; Carcass composition; Energy intake; Genetic strains.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200007

Effect of energy levels of diets formulated on total or digestible amino acid basis on broiler performance
Provedor de dados: 89
Autores: Maiorka,A; Dahlke,F; Santin,E; Kessler,AM; Penz Jr.,AM.
This study was conducted to evaluate the performance and carcass and breast yields of broilers fed two different energy levels (3,200 or 2,900 kcal ME/kg) and two ways of expressing amino acid requirements (total - TAA or digestible - DAA) between 21 and 42 days of age. The results showed that broilers fed the diet containing 3,200 kcal ME/kg had higher weight gain (P=0.015), better feed conversion (P=0.001), and higher abdominal fat deposition (P=0.001) as compared to those fed the diet containing 2,900 kcal ME/kg. Diets formulated on DAA basis promoted higher weight gain (P=0.043), better feed conversion (P=0.010) and better conversion of ME intake into weight gain (P=0.007) as compared to those formulated on TAA basis. The results of this study suggest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Broilers; Energy.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200003

Effect of Environmental Enrichment on the Body Weight in Broiler Chickens
Provedor de dados: 89
Autores: Jacob,FG; Salgado,DA; Nää,IA; Baracho,MS.
ABSTRACT The present study had the objective of analysing the impact of the use of environmental enrichment (music and light stimuli), broiler sex, and age in broiler chickens’ weight during growth. The observational study was carried out on a commercial farm. The environmental enrichment consisted of broilers’ stimulation by sound and light, and a house was kept without stimulus (control). The music stimuli consisted of different music styles and was played during the experiment to promote motivation for the birds. The light stimuli came from a coloured (red and green) LED strobe projector. Both stimuli were applied once a day for about 6 minutes, for five weeks. The broilers were weighed at the end of each week of growth. Throughout the growth period,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production broiler welfare; Music; Light.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200303

Effect of Environmental Temperature During the First Week of Brooding Period on Broiler Chick Body Weight, Viscera and Bone Development
Provedor de dados: 89
Autores: Moraes,VMB; Malheiros,RD; Furlan,RL; Bruno,LDG; Malheiros,EB; Macari,M.
The objective of the present study was to assess the development of broiler chicks during the first week post-hatching when reared at three different environmental temperatures. A total of 480 day-old chicks were placed in three environmentally controlled rooms (20, 25 and 35°C) from 1 to 7 days of age. Body weight gain, feed and water intake, as well as liver, gizzard, heart, yolk sac and bursa of Fabricius weights were measured daily. Tibia and femur bones were weighed and their length and width (medial diameter) were also obtained. The chicks reared at 20º C had lower weight gain and ingested less food than chicks reared at 25°C and less water than chicks kept at 35°C. Relative weights of the liver, heart, and gizzard were affected by environmental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Bone growth; Chicks; Environmental temperature; Viscera.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100003

Effect of Essential Fatty Acid Proportion in Feed on Productive and Reproductive Performance of Japanese Quail (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Castro-Tamayo,CB; Rios-Rincón,FG; Castillo-Lopez,RI; Contreras-Pérez,G; Molina-Barrios,RM; Heredia,JB; Muy-Rangel,MDI; Portillo-Loera,JJ.
ABSTRACT This investigation was carried out to determine the effect of Essential Fatty Acids proportion (EFAs [n-6, n-3]) in feed through the mixture of soy, olive, canola or chia oil on EFA profile in eggs as well as productive and reproductive performance of Japanese quail. We used 120 quail from 7 to 22 weeks of age, in 15 cages in groups of 6 females and 2 males assigned according to the completely randomized design to 3 treatments with 5 replicates. The treatments were n-6:n-3 proportions 10:1 (control), 4:1 and 1:1. FA profile in yolk, feed intake, laying rate, egg weight, fertility, hatchability, and embryonic mortality were measured. In the egg yolk, n-6 content was similar in the proportions (p&gt;0.05), while n-3 content increased (p&lt;0.01) as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Omega-3; N-6:n-3 ratio; Linolenic acid; Hatchability; Embryonic mortality.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100308

Effect of evaporated ethyl pyruvate on reducing salmonella enteritidis in raw chicken meat
Provedor de dados: 89
Autores: Cetin,B; Uran,H; Konak,M.
ABSTRACT In this study, the effect of evaporated ethyl pyruvate (EP) was evaluated for the decontamination of Salmonella Enteritidis on chicken leg meat as a safe alternative to antimicrobial agent. Also, total aerobic mesophilic bacteria (TAMB), Enterobacteriaceae, Escherichia coli and yeast-mold counts samples were investigated. Subsequently, the samples were injected with 0, 42, 105 and 420 mg evaporated EP/L air to the paper filter attached to the container cover and stored at +4 °C for 10 days. According to the results, 42 mg EP/L concentration did not cause a significant decrease in Salmonella Enteritidis count (p&gt;0.05). However, it was determined that 105 and 420 mg EP/L treatments reduced the number of Salmonella Enteritidis by more than 1 and 2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken Meat; Decontamination; Ethyl Pyruvate; Salmonella Enteritidis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200301

Effect of Exogenous Emulsifier (Lyso-Phospholipid) Supplementation in the Broiler Diet, on the Feed Intake and Growth Performance During Grower Phase
Provedor de dados: 89
Autores: Shahid,I; Sharif,M; Yousaf,M; Ahmad,F; Virk,MR; Bilal,MQ; Anwar,U; Ali,A; Hussain,M; Chishti,MFA; Rahman,MA.
ABSTRACT The objective of this experiment was to investigate the effect of supplementation of an exogenous emulsifier (lyso-phospholipid) in the diet of growing broilers on growth performance and digestibility. A total of 1224 Ross-308 ten day old broiler chicks were distributed into two experimental treatments in such a way that each treatment had twelve replicates with fifty-one birds per replicate. Two experimental diets were formulated with and without emulsifier supplementation according to the nutrition standards of Ross 308. Feed intake and body weight gain of the broilers were measured on a daily basis and feed conversion ratio was also calculated. Nutrient digestibility was determined on the 25th day of age. Analysis of variance under completely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age; Additivies; Broiler chicks; Carcass; Ross 308.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100307

Effect of Exogenous Protease, Mannanase, and Xylanase Supplementation in Corn and High Protein Corn DDGS Based Diets on Growth Performance, Intestinal Morphology and Nutrient Digestibility in Broiler Chickens
Provedor de dados: 89
Autores: Hussain,M; Mirza,MA; Nawaz,H; Asghar,M; Ahmed,G.
ABSTRACT A study was conducted to evaluate the effects of exogenous enzymes supplementation in high protein (Hi-Pro) corn DDGS-based diets on broiler growth performance, intestinal health, and nutrient digestibility. A total of 200 one-day-old broiler chicks were randomly allocated to four dietary treatments with five replicates of 10 birds each. A basal diet (CON) was formulated (CP: 20%; ME: 2900 Kcal/kg) containing 15% of dietary crude protein share from Hi-Pro corn DDGS. Three experimental diets were developed using basal diets; diet one was supplemented with protease (CON-P), diet two with an enzyme mix of mannanase and xylanase (CON-MX) and diet three with a protease and enzyme mix of mannanase and xylanase. A digestibility assay was carried out...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Exogenous enzymes; Hi-Pro DDGS; Intestinal integrity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400324

Effect of Fat Sources and Emulsifier Levels in Broiler Diets on Performance, Nutrient Digestibility, and Carcass Parameters
Provedor de dados: 89
Autores: Kamran,J; Mehmood,S; Mahmud,A; Saima,.
ABSTRACT The objective of the current study was to check the effect of fat types and polyglycerol polyricinoleate (PGPR) levels in broiler diets on broilers performance. For this purpose, three sources of fat {soy oil (SO), poultry oil (PO), and oxidized oil (OO) (oxidized soy oil)} and four levels of PGPR were used in a 3×4 factorial arrangement. The trial had 12 different dietary treatments: (T1) basal ration (BR) containing SO without PGPR supplementation, (T2) BR containing PO without PGPR supplementation, (T3) BR containing OO without PGPR supplementation, (T4) BR containing SO with PGPR supplementation (0.025%), (T5) BR containing PO with PGPR supplementation (0.025%), (T6) BR containing OO with PGPR supplementation (0.025%), (T7) BR containing SO...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyglycerol polyricinoleate; Digestibility; Performance; Broilers.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100316

Effect of Fat Sources and Emulsifier Supplementation in Broiler Starter, Grower and Finisher Diets on Performance, Nutrient Digestibility, and Carcass Parameters
Provedor de dados: 89
Autores: Kamran,J; Mehmood,S; Rahman,MA; Mahmud,A; Saima,; Hussain,M; Rehman,A; Khalil,S; Qamar,SH.
ABSTRACT The purpose of this study was to evaluate the effect of fat sources and emulsifier supplementation in different phases on growth performance of broilers. Treatments were; (T1) basal ration (BR) which contained soy oil (SO) and had inclusion of emulsifier for whole life, (T2) BR which contained poultry fat (PO) and had inclusion of emulsifier for whole life, (T3) BR which contained oxidized oil (OO) and had inclusion of emulsifier for whole life, (T4) BR which contained SO and had inclusion of emulsifier during starter phase (T5) BR which contained PO and had inclusion of emulsifier during the starter phase, (T6) BR which contained OO and had inclusion of emulsifier during the starter phase, (T7) BR which contained SO and had inclusion of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fat sources; Emulsifier; Phases; Digestibility; Performance; Broilers.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300314

Effect of Feed Restriction and Photoperiod on Reproduction and LEPR, MELR mRNA Expression of Layers
Provedor de dados: 89
Autores: HAO,E; Chen,H; Ge,S; Huang,R.
ABSTRACT Photoperiod and nutrition are major factors that affect the reproductive efficiency particularly in female animals. In this study we examined the interaction of photoperiod and food restriction on growth, sexual maturation and receptor mRNA expressions of leptin, melatonin, and estrogen in abdominal fat and the ovary of pullets. There were no interaction effects between photoperiod and feeding level on body weight, abdominal fat weight, ovary weight at both 14 wk and 18 wk. Abdominal fat weight of feed restriction group was significantly lower compared with the control group at the age of 14 wk, 18 wk, and age of the first egg (AFE) (p&lt;0.05). Ovary LEPR (Leptin receptor) gene expression showed an interaction effect of the first egg. Restricted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed restriction; MELR; Ovary; Photoperiod; Pullet.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300311

Effect of Feeding Conditions on the Methylation Status of Fatp1 Gene in Chicken Breast Muscle
Provedor de dados: 89
Autores: Gao,G; Wang,H; Zhao,X; Li,Q; Wang,C; Li,J; Zhang,K; Zhong,H; Wang,Q.
ABSTRACT The objective of this work was to investigate the effect of feeding conditions on methylation status of FATP1 gene, which is an important candidate gene of Intramuscular fat and important indicator of chicken meat quality. We selected Daninghe (DNH) and Qingjiaoma (QJM) chickens under scatter-feeding and captivity-feeding conditions as experimental animals, and detected the methylation status of FATP1 genes in chicken breast muscle using Bisulfite Sequencing PCR method. The results showed that the methylation level of FATP1 in scatter-fed chicken was lower than in captivity-fed conditions in DNH and QIM chicken breast tissues; DNA methylation in the promoter and exon1 region was demonstrated to negatively regulate the expression of the FATP1 gene....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding conditions; Chicken; FATP1; Meat quality; Intramuscular fat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500055

Effect of Feeding Low-Oil Ddgs to Laying Hens and Broiler Chickens on Performance and Egg Yolk and Skin Pigmentation
Provedor de dados: 89
Autores: Cortes-Cuevas,A; Ramírez-Estrada,S; Arce-Menocal,J; Avila-González,E; López-Coello,C.
Two experiments were conducted to evaluate the nutritional quality of two sources of low-oil distiller's dried grains with solubles (DDGS) and their pigmenting ability for broiler chicken skin and egg yolks. In Experiment 1, 360 Bovan-White hens between 69 and 77 weeks of age were randomly assigned to five dietary treatments with 6 replicates of 12 hens each. In Experiment 2, 375 Ross 308 broiler chickens were randomly assigned to five treatments with three replicates of 25 birds each. The chickens were fed the experimental diets from one to 42 d of age. In both experiments, treatments consisted of a basal diet with no DDGS, and diets with 6% or 12% inclusion of DDGS from two sources. In Experiment 1, no significant differences in performance were detected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Low-oil DDGS; Egg yolk pigmentation; Skin pigmentation; Abdominal fat; Carcass yield.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200247

Effect of Feeding Transcarpathian Zeolite on Gastrointestinal Morphology and Function in Broiler Chickens
Provedor de dados: 89
Autores: Wawrzyniak,A; Kapica,M; Stępień-Pyśniak,D; Szewerniak,R; Olejarska,A; Jarosz,Ł.
ABSTRACT Many kinds of feed additives can be used in chicken diets to stimulate intestinal morphological maturation and, consequently, intestinal function. The purpose of this study was to evaluate the effect of zeolite on broiler performance, gut morphology and gut digestive enzyme activity. The one-day old broiler chickens Ross 308 were assigned randomly into 3 groups with 30 birds per treatment. The 3 dietary treatments were: basal diet only (control group), basal diet + 2% zeolite, basal diet + 3% zeolite. Morphological and morphometric intestinal assessments were conducted using a light microscope. There was observed increase in villus height, villus perimeter, villus section area and crypt depth throughout duodenum and mid jejunum of the broilers fed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestive enzyme; Histology; Small intestine; Zeolite.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400737

Effect of feeding whole linseed as a source of polyunsaturated fatty acids on performance and egg characteristics of laying hens kept at high ambient temperature
Provedor de dados: 89
Autores: Ahmad,S; Ahsan-ul-Haq,; Yousaf,M; Kamran,Z; Ata-ur-Rehman,; Sohail,MU; Shahid-ur-Rahman,.
The present study was conducted to evaluate the effects of feeding whole linseed on the laying performance and egg characteristics in laying hens kept at high ambient environmental temperatures (average 34 ºC; the diurnal temperature range 26 ºC to 41 ºC). Two hundred and forty 38-wk-old white Leghorn laying hens were fed diets containing 0, 5, 10 or 15% whole linseed (as a source of n-3 polyunsaturated fatty acids) for a period of 12 weeks. Egg production was recorded daily, while feed intake and egg characteristics were monitored on weekly basis. The results of the study demonstrated that egg production and feed intake decreased, while feed conversion ratio (FCR) per dozen of eggs increased (p &lt; 0.05) with increasing dietary linseed levels. Egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linseed; N-3 PUFA; Laying hens; Hot climate; Performance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100004

Effect of Feedingarginine on the Growth Performance, Carcass Traits, Relative Expression of Lipogenic Genes, and Blood Parametersof Arian Broilers
Provedor de dados: 89
Autores: Pirsaraei,ZA; Rahimi,A; Deldar,H; Sayyadi,AJ; Ebrahimi,M; Shahneh,AZ; Shivazad,M; Tebianian,M.
ABSTRACT The aim of this study was to investigate the effects of different dietary levels of L-arginine on the growth performance, blood parameters, and lipogenic gene expression of Arian broiler chickens. For this purpose, 168 Arian broiler chicks (40.33±1.7 g) were assigned to four treatments with three replicates of14 birds each, according to completely randomized design. The experimental treatments consisted of 100, 124, 139, and 154% dietary arginine levels relative to the published requirements of Arian broilers. On 42 d of the experiment, blood samples were collected from two birds (six birds per treatment) for blood metabolite measurements. These birds were then euthanized for carcass evaluation and collection of tissue samples. Increasing dietary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arginine; Arian broiler chickens; Lipogenic gene expression; Performance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200363

Effect of Fennel (Foeniculum Vulgare Mill.) Used as a Feed Additive on The Egg Quality of Laying Hens Under Heat Stress
Provedor de dados: 89
Autores: Gharaghani,H; Shariatmadari,F; Torshizi,MA.
In this study, one hundred and twenty 40-wk-old White Leghorn laying hens were submitted to two different thermal conditions (24° C vs. 34° C) and were fed three levels (0, 10, or and 20 g/kg of diet)of fennel fruits (Foeniculum vulgare Mill.) as a feed additive in. This study was carried out according to a factorial design consisting of two temperatures and three fennel levels with five 5 replicates each (n = 2 × 3 × 5). Performance, egg production, egg quality, and oxidative product levels (malondialdehyde, MDA, and carbonyl) in the eggs were measured before and after heat exposure. The results showed that the tested temperatures did not affect egg production (p&gt;0.05), but the production of eggs with broken shell and feed intake were affected by heat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fennel; Heat stress; Laying hens; Antioxidant; Feed.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200199

Effect of floor type (dirt or concrete) on litter quality, house environmental conditions, and performance of broilers
Provedor de dados: 89
Autores: Abreu,VMN; Abreu,PG de; Jaenisch,FRF; Coldebella,A; Paiva,DP de.
This study was conducted with the objective of evaluating the use of concrete or hard-packed dirt floor in broiler houses. This experiment was carried out in two different phases. The following performance parameters were studied: live weight, feed intake, feed conversion ratio, and mortality. Litter moisture, pH and temperature were measured. Litter residual contamination after cleaning and disinfection was also evaluated. A dry bulb thermometer, a wet bulb thermometer, and a black bulb thermometer were placed inside each broiler house at bird height and outside the broiler house for data collection. Environmental data were collected at 3h intervals from 00:00 to 24:00 hours during weeks 4, 5, and 6 of the grow-out. Based on the collected data, air...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coliforms; Litter pH; Litter temperature; Live performance; Thermal comfort.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200007

Effect of Forced Molting on body characteristics and post-molting egg production performance of Layers in Quetta, Pakistan
Provedor de dados: 89
Autores: Rafeeq,M; Rashid,N; Awan,MA; Tariq,MM; Abbas,F; Ahmed,Z; Taj,I.
White leghorn layer (n=2740), with 85weeksof age, were submitted to forced molting by fasting for 13 days and changes in body characteristics and subsequent laying performance during second laying cycle were evaluated. Live body weight (LBW),ovary weight (OW), oviduct weight (OvW) and oviduct length (OvL) were measured before and after fasting. Post-fasting restricted feeding was applied, initially feeding crushed corn with added 2% Ca for 20 days and thereafter layer crumble feed was offered. Layers lost 632.16g (36%) of their LBW and significant reductions of 45.32, 47.53 and 54% were observed in post-fasting/molt OW, OvW and OvL, respectively (p&lt;0.05). Resting period was 49 days and birds consumed 4.79kg feed during resting period. Egg production...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Layer; Force molting; Body characteristics; Production performance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400009

Effect of forced-molting methods and rearing temperatures on the performance and organ biometrics of laying hens
Provedor de dados: 89
Autores: Sgavioli,S; Filardi,R da S; Praes,M F F M; Domingues,C H de F; Andrade,P de C; Pileggi,J; Boleli,I C; Junqueira,O M.
An experiment was conducted to evaluate the biometrics of organs (ovary, oviduct, liver, proventriculus and gizzard) of laying hens submitted to different forced-molting methods of molt and maintained at three different temperature. Organs were evaluated after molting and resting period. Six hundred birds were distributed according to a completely randomized experimental design in a 5x3 factorial arrangement (forced-molting methods x environmental temperatures) into 15 treatments with 5 replicates of 8 birds each. The molting methods applied were the dietary inclusion of 90%, 70%, 50% of alfalfa, 2,800 ppm zinc oxide, or total feed restriction. Birds were kept at ±20 ºC, ±27 ºC, or ±35 ºC. Data were submitted to analysis of variance and means were compared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat stress; Ovary; Feed restriction; Welfare.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300011

Effect of free-choice feeding on the performance and ileal digestibility of nutrients in broilers
Provedor de dados: 89
Autores: Cruz,VC; Pezzato,AC; Pinheiro,DF; Gonçalves,JC; Sartori,JR.
An experiment was conducted to study ileal digestibility of nutrients and to verify the ability of broilers to select feed in order to meet their requirements for protein and energy. The treatments consisted of six diets: R+S: free-choice feeding with rice bran (energy) and soybean meal (protein); C+G: free-choice feeding with corn (energy) and corn gluten meal (protein); R+G: free-choice feeding with rice bran (energy) and corn gluten meal (protein); C+S: free-choice feeding with corn (energy) and soybean meal (protein); R+C+G+S: free-choice feeding with rice bran and corn (energy) and corn gluten meal and soybean meal (protein); and BD: basal diet represented by a complete diet composed of 63% corn and 33% soybean meal. The results indicated that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Digestibility coefficient; Free-choice feeding; Performance.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300002

Effect of Genetic Strain and Sex on Water Absorption and Water-To-Protein Ratio in Chicken Meat
Provedor de dados: 89
Autores: Ferrari,MJGS; Mariussi,AC; Zucatto,DAA; Sereno,MJ; Garcez-Neto,AF; Bersot,LS.
ABSTRACT The objectives of the present study were to evaluate the water and protein contents and the water-to-protein ratio of chicken parts before and after the pre-chilling process, to compare these results with the values officially recommended by the Brazilian Ministry of Agriculture, and to evaluate the effect of genetic strain and sex on these parameters. Water (%) and protein (%) contents, and water-to-protein ratio (WPR) of boneless and skinless breast (FILLETS) and breast with bone and skin (BREAST) were determined before (BPC) and after (APC) carcass pre-chilling. A total of 585 samples were evaluated: 221 fillets/male, 216 breasts/male, 76 fillets/female, and 72 fillets/female of four different broilers strains were evaluated before (BPC) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water absorption; Carcasses; Chicken; Poultry meat; Water.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200299

Effect of Graded Levels of an Enhanced E.coli Phytase with Step-Wise Reduction of Supplemental Inorganic Phosphate on Growth Performance of Broilers Fed Corn-Soy Diet
Provedor de dados: 89
Autores: Poernama,F; Wibowo,TA; Gomes,GA; Aftab,U.
ABSTRACT This study evaluated the potential of incremental doses of an enhanced Escherichia coli-derived phytase to support step-wise reduction of supplemental inorganic phosphate in an all-vegetable broiler diet. Corn-soybean meal-based diets containing 0.40/0.80%, 0.35/0.70%, and 0.30/0.60% avP and Ca, respectively from 0-10, 10-25, and 26-42 days posthatch served as experimental control (PC). Three test diets were formulated with 500, 1000, and 1500 FTU/kg of phytase assigned respectively an avP matrix of 0.15, 0.19, and 0.23% and a fixed Ca matrix of 0.15%. An additional diet (PC++) containing extra avP and Ca (+0.05% avP/+0.1% Ca) to that of PC was included to test if avP and Ca were not limiting in PC. Each diet was offered to 16 replicates of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Phytase; Inorganic phosphate; Phosphorus.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200310

Effect of Hatching Time on Yolk Sac Percentage and Broiler Live Performance
Provedor de dados: 89
Autores: Özlü,S; Shiranjang,R; Elibol,O; Brake,J.
ABSTRACT This study investigated the effects of broiler chick hatching time on the percentage of the yolk sac and subsequent broiler live performance. Broiler hatching eggs were obtained from a commercial flock at 55 wk of age and were stored for 2 d at 18°C and 75% relative humidity (RH) prior to incubation. Chicks were identified as hatching Early (471-477 h), Middle (480-486 h), and Late (494-510 h). All chicks were removed from the trays at 510 h of incubation. Body weight (BW) and yolk weight (YW) were determined at emergence from the shell (initial hatch time) and at placement on feed. Chicks were permanently identified by hatch time with neck tags, feather sexed, weighed, and introduced to feed and water in litter floor pens. Broiler BW and feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Feed consumption; Hatching time; Mortality; Yolk.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200231

Effect of Heat Stress on the Expression of GABA Receptor mRNA in the HPG Axis of Wenchang Chickens
Provedor de dados: 89
Autores: Xie,LJ; Xie,XZ; Zhou,YW; Liang,C; Jiang,YY; Chen,Z.
ABSTRACT We investigated the effect of heat stress (HS) on the expression of the GABA receptor in the hypothalamic-pituitary-gonadal (HPG) axis of Wenchang chickens. Real-time quantitative RT-PCR (qRT-PCR) was used to quantify the GABA receptor mRNA levels along the HPG axis of chickens under HS (40±0.5 °C) for 1-6 weeks. Our results showed that the expression of GABAA and GABAB receptor at the mRNAs levels in the tissues of HPG axis exhibited fluctuation and variability. After HS, the mRNA level of GABAA receptor was significantly reduced in the hypothalamus of 1-week-old and in the pituitary of 3-week-old chickens, but significantly increased in the pituitary of 1-, 4-, and 5-week-old chickens. The GABAB receptor mRNA level significantly declined in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat Stress; GABA receptor mRNA; HPG axis; Chickens.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200277

Effect of High Incubation Temperature on the Blood Parameters of Layer Chicks
Provedor de dados: 89
Autores: Sgavioli,S; Santos,ET; Domingues,CHF; Quadros,TCO; Castiblanco,DMC; Andrade-Garcia,GM; Amoroso,L; Nääs,IA; Garcia,RG; Baraldi-Artoni,SM.
ABSTRACT Adequate environmental temperature control is essential for incubation efficiency. Layer breeder eggs (n=360) were weighed and distributed in a completely randomized experimental design with two treatments, consisting of two incubation temperatures (T1=37.5 °C, control; and T2=39.0 °C, hot), with two incubators per temperature, and 90 eggs per incubator, totaling 360 eggs. Hatchability, embryo mortality, and chick cloacal and body surface temperatures were not affected by incubation temperature. Eggs incubated at the hot temperature presented greater egg mass loss and higher eggshell conductance than those incubated at the control temperature. Layer chicks derived from eggs incubated at control temperature showed greater absolute weight, yolk-free...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Cloacal temperature; Conductance; Hatchability; Loss of mass.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600041

Effect of In Ovo Feeding of L-Glutamine to Chick Embryos
Provedor de dados: 89
Autores: Rufino,JPF; Cruz,FGG; Costa,VR; Silva,AF; Melo,LD; Bezerra,NS.
ABSTRACT In ovo feeding (IOF), injecting nutrients into the amnion of the avian embryo may enhance hatchability, gastrointestinal development and serum metabolism changes. This hypothesis was evaluated with 5 IOF solutions containing L-glutamine. Were used 315 fertile Rhode Island Red eggs were used (breeders with 32-weeks). The experimental design was completely randomized with the treatments constituted by two controls and five solutions containing L-glutamine levels with 45 replicates each. Data collected were subjected to polynomial regression at 5% of significance. Differences (p&gt;0.05) were observed in hatchability and intermediary mortality, with a gradual lower of decrease in hatchability from the IOF of L-glutamine. The yolk sac was higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoacid; Biotechnology; Embryo mortality; Hatchability; In ovo feeding.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400300

Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality
Provedor de dados: 89
Autores: Araújo,ICS; Leandro,NSM; Mesquita,MA; Café,MB; Mello,HHC; Gonzales,E.
ABSTRACT Two experiments were conducted to evaluate the effect of broiler breeder age and incubator type on hatching parameters, hatch window, embryo diagnosis results, and hatchling physical quality. The treatments consisted of a combination of three broiler breeder ages (29, 35 and 59 weeks of age) and two incubator types (single stage, SS; or and multiple stage, MS). A completely randomized design in a 3x2 factorial arrangement was applied. In Experiment I, 1,896 eggs were used and 360 eggs in Experiment II. There was an interaction between breeder age and incubator type only for hatchling physical quality score. Independently of incubator type, hatchability rate, late embryo mortality, and egg contamination were higher in the eggs laid by older...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryo; Hatch window; Multiple-stage and single-stage incubation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600017

Effect of Infectious Bursal Disease (Ibd) Vaccines on Infection of Salmonella Heidelberg in Broiler Chickens
Provedor de dados: 89
Autores: Marín-Gómez,SY; Martins,NRS; Fernando,FS; Coelho,HLG; Freitas Neto,OC.
ABSTRACT Salmonella Heidelberg (SH) has represented a great concern to the Brazilian poultry industry in the last years. It is known that immunosuppression in poultry is a contributing factor to increase Salmonella faecal shedding and to disturb control programmes. Not only infectious bursal disease (IBD) virus but also some live vaccines have been reported to induce immunosuppression. In the present study we assessed the effects of two live vaccines against IBD on SH-infected broiler chicks. At 7 days of age, birds of three groups (vaccinated with recombinant HVT-IBD vector, with immune complex-IBD vaccine and unvaccinated) were orally challenged with 1 x 108 CFU of SH. A group of hatchmates remained unvaccinated/unchallenged to serve as negative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Faecal colonization; HVT-VP2 vector; Immune-complex; Depletion.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100321

Effect of inoculation route on the production of antibodies and histological characteristics of the spleen in laying hens
Provedor de dados: 89
Autores: Eto,SF; Andrade,FG; Pinheiro,JW; Balarin,MR; Ramos,SP; Venancio,EJ.
Recent studies have reported the use of IgY antibody in the prevention or treatment of diseases in animals. IgY can be obtained in large amounts from the yolk of chicken eggs through a low-cost process. This study evaluated the effect of different routes of inoculation on antibody production and spleen morphological characteristics of laying hens (White Leghorn) inoculated with sheep red blood cells. The analysis of the results showed that the intramuscular route is the most efficient for total antibody production in the primary immune response, while the intravenous route is the most efficient in producing IgY antibodies in the secondary immune response. No histological changes were observed in the spleen of laying hens. This study could be useful for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibody production; Humoral immunity; IgY; Laying; Spleen.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100011

Effect of In-Ovo Ascorbic Acid Injection on the Bone Development of Broiler Chickens Submitted to Heat Stress During Incubation and Rearing
Provedor de dados: 89
Autores: Sgavioli,S; Domingues,CHF; Santos,ET; Quadros,TCO de; Borges,LL; Garcia,RG; Louzada,MJQL; Boleli,IC.
Abstract This experiment was conducted to evaluate the effect of in-ovo ascorbic acid (AA) injection on the bone development of broilers submitted to heat stress during incubation and rearing. One thousand (1,000) Cobb(r)fertile broiler eggs were randomly distributed according to the weight into five incubators, with 200 eggs per incubator. The incubation treatments were: eggs not injected with AA and incubated at 37.5°C; eggs not injected with AA and incubated at 39°C; and eggs injected with 6 µg AA/100 µL water prior to incubation and incubated at 39ºC. The hatched birds were reared at three different house temperatures: cold, thermoneutral, or and hot. The high incubation temperature negatively influenced broilers' bone characteristics. The femur of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ash; Mineral density; Femoral bone strength; Tibia; Vitamin C.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100153

Effect of Job Rotation on the Risk of Developing Ul-WMSDS in Poultry Slaughterhouse Workers
Provedor de dados: 89
Autores: Dias,NF; Tirloni,AS; Reis,DC; Moro,ARP.
ABSTRACT This study analyzed the effect of job rotation on the risk of developing UL-WMSDs in a poultry slaughterhouse with 1,200 workers. Three organizational settings were evaluated (“without job rotation”, “with job rotation - tasks &gt;1h” and “with job rotation - tasks &lt;1h”) using the OCRA Checklist method and the fulfillment of requirements for the implementation of rotations established by the Brazilian Regulatory Standard NR-36. The OCRA score of the right upper limbs (16.5±5.7) were significantly higher (p&lt;0.001) relative to the left upper limbs (15.0±5.6). The average scores on all three organizational conditions presented moderate risk. There was a significant difference between the scores of the conditions “without job rotation” and “with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ergonomics; Job rotation; Musculoskeletal disorders; Slaughterhouse.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200311

Effect of Led Lighting Colors for Laying Japanese Quails
Provedor de dados: 89
Autores: Nunes,KC; Garcia,RG; Nääs,IA; Eyng,C; Caldara,FR; Sgavioli,S; Roriz,BC; Ayala,CM.
ABSTRACT Time of exposure and light intensity rearing house may affect the performance and egg quality of laying quails. This research aimed at evaluating the live performance, egg quality, biometry of the reproductive system, and the gastrointestinal tract of Japanese quails (Coturnix coturnix japonica) exposed to artificial light-emitting diodes (LED) of different colors in comparison with fluorescent lamps. A total of 240 Japanese quails were distributed in completely randomized experimental design with four treatments (fluorescent lamp, and green, red, or blue LED lamps) with six replicates of 10 birds each. Average egg weight and eggshell thickness were different (p&lt;0.05) when LED bulbs were compared with fluorescent lamps. The egg weight of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix japonica; Light-emitting diode; Fluorescent light bulb; Egg quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500051

Effect of Litter on Development and Severity of Foot-Pad Dermatitis and Behavior of Broiler Chickens
Provedor de dados: 89
Autores: Zikic,D; Djukic-Stojcic,M; Bjedov,S; Peric,L; Stojanovic,S; Uscebrka,G.
ABSTRACT This study was conducted to evaluate the impact of litter type and litter treatment with enzymatic-bacterial production incidence and severity of footpad dermatitis and consequently on behavior of broiler chickens. A total of 1,200 one day-old Ross 308 broilers were randomly allocated to 4 treatments with 4 replicates in 2 x 2 factorial design. The first factor was the physical form of the straw (chopped on approximately 2 cm or un-chopped) and the second factor was addition of enzymatic-bacterial product applied directly on the straw. Each replicate consisted of 75 as-hatched birds per pen. Occurrence and severity of the footpad dermatitis and histological evaluation of the scores was done at the end of the trial (42 days of age). During the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Broiler; Dermatitis; Footpad; Litter.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200247

EFFECT OF LITTER SUBSTRATES ON THE PERFORMANCE, CARCASS TRAITS, AND ENVIRONMENTAL COMFORT OF RED-WINGED TINAMOU (RHYNCHOTUS RUFESCENS)
Provedor de dados: 89
Autores: Nunes,JC; Carvalho,MM; Sugui,JK; Queiroz,FA; Santana,AE; Hata,ME; Aiura,ALO; Oliveira,JA; Queiroz,SA.
ABSTRACT The study aimed at evaluating the effect of litter substrates on the performance, carcass traits, and environmental comfort of red-winged tinamou (Rhynchotus rufescens). In this experiment, 160 birds, with 100 and 300 days of age, were housed into 20 pens, and distributed according to a completely randomized experimental design into five treatments with four replicates of eight birds each. Treatments consisted of five litter substrates: wood shavings, rice husks, peanut hulls, grass hay, or sand. Feed intake; weight gain; breast, hock, and footpad lesions; back feathering; total meat production; carcass and parts yield; and leukocyte counts were evaluated. Litter substrates were analyzed for dry matter content, standard microbial count, ammonia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grass hay; Leukocyte counts; Litter temperature; Radiant heat load; Sand.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500041

Effect of Marination with Fruit and Vegetable Juice on the Some Quality Characteristics of Turkey Breast Meat
Provedor de dados: 89
Autores: Gök,V; Bor,Y.
ABSTRACT The effect of marination with antioxidant-rich fruit and vegetable juices, including black carrot juice, black mulberry juice, black grape and pomegranate juice, mixed vegetable juice (yellow carrot, tomato, zucchini, pepper, black carrot, cucumber and lettuce) for 24 and 48 hours on chemical, textural and sensorial properties of turkey breast meat was investigated. Moisture content of the samples marinated for 24 hours and cooked varied between 58.85 and 70.51%, with the control sample presenting the moisture highest value. The samples marinated in red grape juice for 48 hours had the highest cooking loss (49.11%), while the lowest cooking loss was recorded in the samples marinated in black carrot juice (40.61%). Moreover, the phenolic content of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Marination; Phenolic compounds; Turkey meat; Texture.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300481

Effect of maternally-derived antibodies on the performance and immunity of broilers induced by in ovo or post-hatching immunizations with a live vaccine against infectious bursal disease
Provedor de dados: 89
Autores: Michell,BC; Gomes,AD; Baião,NC; Resende,M; Lara,LJC; Martins,NRS.
The interference of low or high maternal antibodies titers on the attenuated infectious bursal disease (IBD) virus (IBDV) vaccine infection and its effects on the performance of broilers vaccinated at the 18th day of incubation (in ovo), at one day of age (subcutaneously-SC), or at 15 days of age (drinking water-DW) were investigated. After a series of three live vaccinations, breeders were given or not an IBD oil emulsion vaccine (IBD-OEV) prior to sexual maturity. At day 18 of incubation (in ovo), a commercial vaccine containing HVT and an intermediate IBDV strain or the single HVT vaccine was given. An intermediate IBDV vaccine was given SC at one day of age, or at 15 days of age via DW. The progeny of unvaccinated breeders presented higher neutralizing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Attenuated IBDV; Attenuated IBDV neutralization; Broiler chicken; Infectious bursal disease; Infectious bursal disease virus; IBDV; In-ovo vaccination; Maternal antibody; RT-PCR; Serum neutralization; Vaccination versus performance.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100009

Effect of Moringa Oleifera Leaf Powder Supplementation on Pectoral Muscle Quality and Morphometric Characteristics of Tibia Bone in Broiler Chickens
Provedor de dados: 89
Autores: Rehman,HF; Zaneb,H; Masood,S; Yousaf,MS; Ashraf,S; Khan,I; Shah,M; Khilji,MS; Rehman,H.
ABSTRACT Although in-feed antibiotics work for broiler chicken´s growth, they are a source of public health hazard. Therefore, there is a need for alternates which can act as growth promoter without deleterious effects on the health of meat consumers. Moringa oleifera is one such phytobiotic which is reported to possess antimicrobial and immuno-modulatory properties. This study investigated the effect of Moringa oleifera leaf powder (MOLP) supplementation on meat quality and bone morphometry of broiler. One-day-old chicks (n=100), divided into five groups (four replicates with n=5), were fed a basal diet (control group) or same diet supplemented with 6, 9, 12 or 15 g/kg MOLP. On d-35, two birds per replicate were euthanized to collect samples of breast...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast muscle; PH; Phytobiotic; Tibia; WHC.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400817

Effect of Non-Starch Polysaccharide (NSP) of Wheat and Barley Supplemented with Exogenous Enzyme Blend on Growth Performance, Gut Microbial, Pancreatic Enzyme Activities, Expression of Glucose Transporter (SGLT1) and Mucin Producer (MUC2) Genes of Broiler Chickens
Provedor de dados: 89
Autores: Yaghobfar,A; Kalantar,M.
ABSTRACT The experiment was carried out in a completely randomized design (CRD) with 625 broiler chicks (Ross 308) for 5 repetitions (25 birds per each replicated) on the 5 treatments diet. Treatments included two different types of cereal grains (wheat, and barley) with or without an enzyme supplementation along with a corn-based diet as control group. The experimental diets were formulated to have similar contents of crude protein, metabolizable energy, total non-starch polysaccharides (NSP) and were fed in two periods of starter and grower. Experimental traits were consisted growth performance, ileal flora numeration, villus morphology in 3 parts of the intestine, digesta viscosity and pancreatic enzyme activity, and determining the gene expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Enzyme activity; Gene expression; Micro flora; NSP.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400629

Effect of nucleotides on broiler performance and carcass yield
Provedor de dados: 89
Autores: Pelícia,VC; Sartori,JR; Zavarize,KC; Pezzato,AC; Stradiotti,AC; Araujo,PC; Mituo,MAO; Madeira,LA.
This study aimed at evaluating the effect of nucleotides on the performance and carcass yield of broilers fed diets with no antibiotic growth promoters (AGP), anticoccidials, or animal feedstuffs. In the trial, 600 Ross 308 male broilers were distributed in a completely randomized experimental design into six treatments with four replicates of 25 birds each. Treatments consisted of a control diet (CD), CD + AGP, CD + 0.04%, CD + 0.05%, CD + 0.06%, and CD + 0.07% nucleotides. The experimental diets did not contain anticoccidials, and birds were vaccinated against coccidiosis at three days of age. No significant differences were detected among broilers submitted to the different treatments in none of the studied parameters. Under the conditions of this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Nucleotides; Performance.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100004

Effect of oils sources on blood lipid parameters of commercial laying hens
Provedor de dados: 89
Autores: Murata,LS; Ariki,J; Machado,CR; Silva,L da PG da; Rezende,MJM.
The experiment was carried out to verify if total cholesterol, HDL-cholesterol and triacylglicerol plasma levels are affected when laying hens are fed rations containing different dietary oil sources. One hundred sixty 50 week-old hens, assigned to four treatments with five replicates using 8 hens per replicate were used. The experimental period was of 84 days divided in 3 cycles of 28 days each. In the last day of each cycle, blood samples of 2 hens per replicate were randomly choose and blood samples were collected. On the other hand, blood was also collected at 7 am, 11 am and 3 pm aiming to study the daily changes of these lipids. Blood lipid parameters were not affected by different dietary oil sources (p &gt; 0.05); however, HDL-cholesterol did...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood lipids; Diet; Laying hens; Oil source.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300008

Effect of organic mineral supplementation on the egg quality of semi-heavy layers in their second cycle of lay
Provedor de dados: 89
Autores: Saldanha,ESPB; Garcia,EA; Pizzolante,CC; Faittarone,ABG; Sechinato,A da; Molino,AB; Laganá,C.
This study was carried out to evaluate the effects of dietary trace mineral levels and sources on egg quality parameters of second-cycle semi-heavy layers. A number of 360 72-week-old layers were submitted to forced molting. Upon return of lay (83 weeks of age), birds were distributed according to a completely randomized experimental design of six treatments with six replicates of 10 birds each. The control treatment consisted of 0.10% dietary supplementation of trace minerals from inorganic sources, which was proportionally replaced by five levels (110, 100, 90, 80, 70%) of an organic trace mineral supplement containing 30, 30, 40, 6, 0.61, and 0.3 g/kg product of Zn, Fe, Mn, Cu, I, and Se, respectively. All diets contained equal protein, energy, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell quality; Forced molting; Mineral supplementation; Yolk.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400005

Effect of organic selenium and zinc on the performance and egg quality of Japanese quails
Provedor de dados: 89
Autores: Cruz,VC; Fernandez,IB.
The present study aimed at evaluating the effect of the dietary inclusion of organic trace minerals selenium and zinc on the performance and internal and external egg quality of Japanese quails submitted to heat stress. Data on egg production, feed conversion (kg feed intake/kg eggs and dozen eggs), egg weight, egg specific gravity, eggshell thickness and weight, Haugh unit, yolk index, albumen index and mortality (%) of 144 quails were evaluated for 112 days, divided in eight cycles of 14 days. Birds were distributed according to a randomized block experimental design into four treatments (control; 0.3ppm Se; 60ppm Zn and 0.3ppm Se + 60ppm Zn) with six replicates each. There were no differences (p&amp;gt; 0.05) in egg production (%), egg mass (g/hen/day),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix; Japanese quails; Performance; Quail eggs.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200002

Effect of Origanum syriacum L. Essential Oil on the Storage Stability of Cooked Chicken Meat
Provedor de dados: 89
Autores: Al-Hijazeen,M.
ABSTRACT The effects of the addition of Origanum syriacum L. essential oil (OE) on the lipid and protein oxidation, and sensory attributes of cooked chicken meat were compared with those of synthetic commercial meat preservatives. Ground deboned and skinless chicken breast and thigh meat were distributed according to six treatments: (T1) control (no addition of meat preservative); or the addition of (T2) 100 ppm OE; (T3) 150 ppm OE; (T4) 300 ppm L-ascorbic acid (E-300); (T5) 5 and 14 ppm butylated hydroxyanisoleadded to breast and thigh meat, respectively, (BHA/E-320); and (T6) 150 ppm sodium nitrite (E-250). Meat samples were cooked and analyzed for lipid oxidation (TBARS levels) and protein oxidation (carbonyl levels) on days 0, 4, and 7 days of storage....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken meat; Lipid oxidation; Oregano essential oil; Sensory attributes.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100314

Effect of Oxidized Soybean Oils on Oxidative Status and Intestinal Barrier Function in Broiler Chickens
Provedor de dados: 89
Autores: Tan,L; Rong,D; Yang,Y; Zhang,B.
ABSTRACT The objective of this study was to evaluate the effect of oxidized soybean oils on the growth performance, metabolic oxidative status and intestinal barrier function of broiler chickens. A total of 240 one-day-old female broiler chickens were assigned to four dietary treatments with six replicates (cages) of 10 birds each. The dietary treatments comprised of a basal diet supplemented with 4% of: non-oxidized (fresh) soybean oil (control treatment, SNX); lowly-oxidized soybean oil (SLX) (oil heated for 10h at 200°C); moderately-oxidized soybean oil (SMX) (oil heated for 18h at 200°C); or highly-oxidized soybean oil (SHX) (oil heated for 30h at 200°C). Diets and water were offered ad libitum. The experiment was lasted 21d.The growth performance of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intestinal barrier function; Inflammation-related factor; Oxidative stress; Heat-oxidized oil; Broilers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200333

Effect of ph and temperature on the activity of phytase products used in broiler nutrition
Provedor de dados: 89
Autores: Naves,L de P; Corrêa,AD; Bertechini,AG; Gomide,EM; Santos,CD dos.
The activity of three commercial microbial phytase (Aspergillus oryzae, A. niger, and Saccharomyces cerevisae) products used in broiler nutrition was determined at different pH (2.0 to 9.0) and temperature (20 to 90°C) values. Enzymatic activity was determined according to the reaction of the phytase with its substrate (sodium phytate), in four replicates, and was expressed in units of phytase activity (FTU). A. oryzae phytase exhibited optimal activity at pH 4.0 and 40°C, but its absolute activity was the lowest of the three phytases evaluated. A. niger phytase exhibited maximal activity close to pH 5.0 and 45ºC, whereas S. cerevisae phytase presented its highest activity at pH close to 4.5 and temperatures ranging between 50 and 60°C. It was concluded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzymatic activity; Enzyme; Phytate; Phytic acid.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300004

Effect of Photoperiod on the Egg Production, Plasma Luteinizing Hormone, Follicle-Stimulating Hormone, Gonadal Hormones, and Mrna Levels of Lh and Fsh in the Hypothalamic-Pituitary-Gonadal Axis of Pigeons
Provedor de dados: 89
Autores: Wang,Y; Li,YB; Yang,HM; Wang,ZY.
ABSTRACT We investigated the egg production, changes in luteinizing hormone (LH), follicle-stimulating hormone (FSH), gonadal hormones, and their mRNA levels in the hypothalamic-pituitary-gonadal axis of White King pigeons submitted to different photoperiods. The treatments consisted of three photoperiods (8 h light (L):16 h dark (D), 12L:12D, and 16L:8D), with three replicates of twelve pairs of adult pigeons. The birds were exposed the photoperiods for 45 days. Egg production performance was recorded daily. Six pigeon pairs per replicate were selected for plasma collection, and six pigeon pairs per replicate for the resection of the hypothalamic-pituitary-gonadal (HPG) axis. Egg production was significantly improved by long-day lighting (16L:8D), while...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Day lighting; Expression; Hormone; Pigeon; Reproduction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400314

Effect of phytase in laying hen diets with different phosphorus sources
Provedor de dados: 89
Autores: Casartelli,EM; Junqueira,OM; Laurentiz,AC; Filardi,RS; Lucas Júnior,J; Araujo,LF.
An experiment was conducted to evaluate the effects of the enzyme phytase in diets formulated with different phosphorus sources on performance, eggshell quality and excretion of commercial laying hens. Two hundred and eighty-eight commercial Hyssex Brown laying hens were evaluated during two production phases, which included eight twenty-eight-day cycles, using a completely randomized design in a 3x2 factorial with six replicates of eight birds per treatment. Three phosphorus sources (calcium and sodium phosphate, micro-granulated dicalcium phosphate and triple super phosphate) and two phytase levels (0 or 1000 FTU/kg diet) were tested in the composition of the diets. After the post-peak period, triple super phosphate decreased bird performance and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commercial laying hens; Eggshell quality; Phosphorus sources; Phytase enzyme.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200005

Effect of Plant Essential Oil on Growth Performance and Immune Function During Rearing Period in Laying Hens
Provedor de dados: 89
Autores: Gao,J; Liu,W; Geng,B; Lei,Q; Han,H; Zhou,Y; Liu,J; Cao,D; Li,H; Li,F.
ABSTRACT The effects of plant essential oil (PEO) on the production performance and immune function of laying hens were evaluated to provide theoretical basis for promoting the natural plant extracts. Eight thousand 1-day-old healthy laying hens were randomly divided into a control group or PEO group, with four replicates per treatment and 1000 hens per replicate. The PEO diet was supplemented with 3g/kg plant extract. Diets were fed for 56 days. The tibia length and keel length were detected on an empty stomach at the end of the trial. Blood samples were collected on the 28th and 56th days to detect the level of C3, C4, IL-1, IL-2, IL-17 and immunoglobulin in the serum. The results showed that, compared with the control, PEO supplementation significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hens; Plant essential oil; Production performance; Immune function.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300301

Effect of poultry viscera meal inclusion in broiler diets in different rearing periods on performance, carcass and parts yields
Provedor de dados: 89
Autores: Cruz,VC; Ducatti,C; Araújo,PC; Sartori,JR; Piccinin,A.
The objective of the present study was to evaluate the effect of the dietary inclusion of poultry viscera meal (VM) on broiler performance and carcass, parts, and abdominal fat yields in broilers by replacing a diet containing VM with a strictly vegetable diet and vice-versa. A number of 720 one-day-old broiler chicks were randomly distributed in 6 groups: G1-basal diet (BD) - corn and soybean based meal, with no VM from 1 to 42 days of age, G2- 8% VM diet from 1 to 42 days, G3- BD from 1 to 21 and 8% VM diet from 22 to 42 days, G4- BD from 1 to 35 and 8% VM diet from 36 to 42 days, G5- 8% VM diet from 1 to 21 days and BD from 22 to 42 days, G6- 8% VM diet from 1 to 35 and BD from 36 to 42 days. Average body weight, weight gain, feed intake, feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal byproducts; Broiler chickens; Carcass yield; Performance; Poultry viscera meal.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300006

Effect of Production Systems and Dietary Interventions on Growth Performance, Morphometrics, Physiological Response and Behaviour of the Naked Neck Chickens
Provedor de dados: 89
Autores: Bughio,E; Hussain,J; Mahmud,A; Khalique,A.
ABSTRACT The present study was planned to evaluate the growth performance, morphometrics, physiological and behavioral response of Naked Neck chicken under different production systems and nutritional regimens. For this, a total of 900 Naked Neck chickens of 6-weeks of age were used; the birds were divided into 10 treatment groups consisting of 5 replicates of 18 birds each. A 2×5 factorial arrangement of treatment was employed under Completely Randomized Design. Treatments were consisted of two production systems (intensive and free range) and five nutritional regimens (100% commercial feed, 75% commercial feed +25% kitchen waste, 50% commercial feed +50% kitchen waste, 25% commercial feed +75% kitchen waste and 100% kitchen waste). Body weight, heartbeat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Production systems; Nutritional interventions; Naked neck; Growth performance; Behavioral response.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300311

Effect of protein, carbohydrate, lipid, and selenium levels on the performance, carcass yield, and blood changes in broilers
Provedor de dados: 89
Autores: Hada,FH; Malheiros,RD; Silva,JDT; Marques,RH; Gravena,RA; Silva,VK; Moraes,VMB.
The objective of this study was to evaluate the performance, carcass and parts yield, and blood changes in broilers fed different protein, carbohydrate, and lipid levels. Birds were fed a commercial diet until seven days of age. On day 8, birds were distributed according to a completely randomized experimental design in a 4 x 2 factorial arrangement (control diet, low protein diet, low carbohydrate diet or low lipid diet vs. supplementation of 0 or 0.3ppm organic selenium) with four replicates of 15 birds each. Broilers fed low protein presented lower body weight, feed intake, and worse feed conversion ratio on day 42, as well as lower carcass and breast yields, higher leg and abdominal fat yields, higher triglyceride and lower uric acid blood levels....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrates; Lipids; Blood parameters; Protein; Selenium.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400014

Effect of selection for productive traits in broiler male lines on embryo development
Provedor de dados: 89
Autores: Schmidt,GS; Figueiredo,EAP.
This experiment aimed at evaluating the effect of genetic selection on embryo development of two male broiler lines (LL and LLc). LL line was selected for eight generations for growth, carcass, and reproduction traits. The LLc line was derived from LL line in 1985, and kept under a random mating system with no selection. Fertile eggs were collected and individually weighed for four periods of five consecutive days, with two-week intervals. For every period, a total of 960 eggs/line were identified and separated in four groups of 240 eggs, and then stored for subsequent incubation. At 9 (P9), 11 (P11), 13 (P13), 15 (P15), 17 (P17) and 21 (P21) days of incubation, eggs and embryos were weighed (EmW). Egg weight (EgW) was similar between the two lines. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Correlation; Egg weight; Embryo weight; Genetic gain; Meat lines.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100003

Effect of selection for productive traits in broiler maternal lines on embryo development
Provedor de dados: 89
Autores: Schmidt,GS; Figueiredo,EAP de; Ledur,MC; Alves,HJ.
This study used 300 females and 30 males with 36 weeks of age from the selected PP and control PPc maternal broiler lines. PP has been selected for heavy body weight (PC) and high egg production for eight generations. Fertile eggs were collected and weighed individually for 4 periods of 5 consecutive days at two-week intervals. In each period, a total of 960 eggs/line were identified and separated in groups of 240 eggs, and stored for later incubation. Embryo weight (PE) was evaluated at 9 (P9), 11 (P11), 13 (P13), 15 (P15), 17 (P17) and 21 (P21) days of incubation. The objective was to estimate the effect of selection on embryo development. Egg weight (PO) was similar between the two lines. The differences in PE were significant from P15 on, resulting in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Correlation; Egg weight; Embryo weight; Genetic gain; Meat lines.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200006

Effect of Selenium Supplementation in Broiler Diets on Breast Meat Deposition
Provedor de dados: 89
Autores: Vieira,VI; Durau,JF; Schramm,VG; Bassi,LS; Oliveira,SG; Maiorka,A.
ABSTRACT The objective of the study was to evaluate the deposition of selenium in the breast muscle of broilers fed different selenium sources during different periods. Two experiments were carried out with broilers fed 45% sodium selenite (SS) or 2% hydroxy-selenomethionine (HSM) to determine the selenium deposition rate in the muscle tissue. In Experiment 1, 48 broilers were distributed in a completely randomized design with six treatments with eight replicates each, consisting of diets containing 0 Se (0), 200 or 400 µgSS/kg (200 SS, 400 SS), or 100, 200, or 300 µgHSM/kg (100 HSM, 200 HSM, 300 HSM) for 10 days. The highest Se breast content was obtained with 300 HSM diet, followed by 200 SS diet compared to the other treatments. Experiment 2 had a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast muscle; Hydroxy-selenomethionine; Mineral deposition; Sodium selenite.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100312

Effect of Sodium Chloride Replacement with Potassium Chloride on Quality Traits of Bicarbonate-Marinated Turkey Breast Meat
Provedor de dados: 89
Autores: Mudalal,S; Petracci,M.
ABSTRACT This study aims to evaluate the possibility to formulate low-sodium bicarbonate-marinated turkey breast meat. In total, 60 meat cuts (100 × 50 × 30mm) were divided into four treatments: B1 (0.5% sodium bicarbonate and 0% sodium chloride replacement), B2 (0.5% sodium bicarbonate and 15% sodium chloride replacement), B3 (0.5% sodium bicarbonate and 30% sodium chloride replacement), and B4 (0.5% sodium bicarbonate and 45% sodium chloride replacement). The results showed that sodium replacement up to 45% had no impact on texture (as represented by Allo-Kramer shear values) and water activity. After cooking, Group B1 exhibited the highest L* value (72.1) and the lowest b* (6.6) when compared to other groups. In conclusion, replacing sodium chloride...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical composition; Water activity; Texture; Sensory.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300316

Effect of Sorghum Based Nutritional Programs on Performance, Carcass Yield and Composition of Breast in Broilers
Provedor de dados: 89
Autores: Silveira,MM; Martins,JMS; Litz,F; Carvalho,CMC; Moraes,CA; Silva,MCA; Fernandes,EA.
ABSTRACT An experiment was conducted to compare three nutritional programs, which were developed with tannin-free grain sorghum based diets, evaluating performance, carcass yield and bromatological composition of the pectoral muscle of broilers. A total 1360 chicks mixed (50:50), from one to 42 days old Hubbard Flex Broilers, were housed in a completely randomized design consisting of treatments and 10 replicates each, distributed as follows: three programs with whole sorghum grain based diets (nutritional program with daily adjustment, nutritional program with every three days adjustment and nutritional program with four stages and a program with ground and whole sorghum grain based feed (four stages). The cumulative performance was evaluated at, 21 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromatological; Carcass quality; Performance; Sorghum bicolor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500043

Effect of Sources and Levels of Dietary Zinc on the Performance, Carcass Traits and Blood Parameters of Broilers
Provedor de dados: 89
Autores: Zakaria,HA; Jalal,M; AL-Titi,HH; Souad,A.
ABSTRACT A total of 400 one-day-old, straight-run, commercial (Ross 308) broiler chicks were used to evaluate the effects of two dietary levels of zinc (Zn) sources on broiler chick performance, carcass traits and blood parameters. Corn-soybean diets were formulated for three rearing phases (starter, grower and finisher). The two dietary treatments applied consisted of the addition per kg of diet of 80mg of inorganic Zn (ZnO) (T1), or 80mg of ZnO plus 42mg of an organic Zn-amino acid complex (Availa-Zn120; Zinpro Corporation, Eden Prairie, MN, USA), totaling 122mg of the combined organic and inorganic Zn sources (T2). Birds were distributed according to a completely randomized design in the two treatments with eight replicates (pens) of 25 birds each. Feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Performance; Carcass; Blood parameters; Zinc sources and levels.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300519

Effect of squash seed meal (Cucurbita moschata) on broiler performance, sensory meat quality, and blood lipid profile
Provedor de dados: 89
Autores: Aguilar,YM; Yero,OM; Navarro,MIV; Hurtado,CAB; López,JAC; Mejía,LBG.
In this experiment, 240 Cobb-500® broilers reared from1 to 49 days, and distributed according to a completely experimental randomized design with four treatments of four replicates each in order to evaluate the effect of the dietary inclusion of 0, 33, 66 or 100 g/kg of squash seed meal (SSM) (Cucurbita moschata) on the performance, carcass yield, serum lipid profile and sensory meat quality of broilers. Significant differences (p&lt;0.05) were detected in performance, carcass weight, weight and breast yield, and leg weight. The best results were obtained with 33 and 66 g/kg as compared to the control diet and 100 g SSM /kg. Abdominal fat decreased with the inclusion of 66 and 100 g SSM / kg, but the sensory quality of breast and thighs was not affected by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Feeding; Lipids; Squash seed meal.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400001

Effect of Stocking Density on the Performance and Immunity of 1- to 14-d- Old Broiler Chicks
Provedor de dados: 89
Autores: Qaid,M; Albatshan,H; Shafey,T; Hussein,E; Abudabos,AM.
ABSTRACT The current experiment was conducted to evaluate the effect of stocking density (SD) on the performance and immunity of 1- to 14-d-old broilers. A total of 1836 one-day-old Cobb 500 broilers were housed at four different SD (30, 60, 90 and 120 chicks/m2). Body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR) were estimated on d 2, 5, 8, 11 and 14. Relative lymphoid organ weights, maternal antibody titers against IBV, IBD and NDV, and stress indicators were estimated on d 3, 6, 9 and 12.The results indicated that age significantly (p&lt;0.001) affected the performance and immunity of broiler chicks. Stocking density significantly (p&lt;0.001) affected the performance and physiological stress indicators of broiler chicks, but not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Immune response; Stocking density.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400683

Effect of Storage in Display Cases on the Sensory Quality of Chicken Breast Meat (M. Pectoralis)
Provedor de dados: 89
Autores: Chmiel,M; Słowiński,M.
ABSTRACT This paper describes a study on the determination of sensory quality of chicken breast muscles packaged with a PVC overwrap and under high-oxygen modified atmosphere (MAP: 75% O2 and 25% CO2), and stored in the display case (exposure to light and temperature fluctuations). For a more complete characterization of the raw material, the volume of drip loss in the package, and meat pH, L*, a*, and b* color components were measured. For comparison purposes, the quality of meat maintained under dark cold storage was also evaluated (control samples). In total, 64 PVC overwrap and 64 MAP packages were evaluated. Chicken breast muscles stored in the display case on PVC overwrap and in MAP packaging presented acceptable, despite but not the highest sensory...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken breast muscles; Display case; MAP; Sensory quality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100091

Effect of storage period and egg weight on embryo development and incubation results
Provedor de dados: 89
Autores: Schmidt,GS; Figueiredo,EAP; Saatkamp,MG; Bomm,ER.
A total number of 300 females and 30 males of two experimental broiler lines, TT (male) and PP (female), with 39 and 36 weeks of age, respectively. Experiment 1 (TT) evaluated the effect of storage time (ST) on hatchability and embryo mortality (EM). Eggs were stored for 2 (ST1), 4 (ST2), 6 (ST3), 8 (ST4), 10 (ST5), 12 (ST6), and 24 (ST7) days and EM was assessed in the periods of 0 to 6 (EM1), 7 a 13 (EM2), 14 to 17 (EM3), 18 to 21 (EM4), and 0 to 21 (TEM) days. Experiment 2 (PP) evaluated the effect of egg weight (EW) on embryo development. Eggs were individually collected and weighed. Embryos were collected and weighed on days 9 (EW9), 11 (EW11), 13 (EW13), EW15, 17 (EW17) days of incubation and at hatching (EW21). ST linearly influenced hatchability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chick weight; Broiler breeders; Embryo development; Embryo mortality; Egg weight; Incubation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100001

Effect of Synthetic Emulsifier and Natural Biosurfactant on Feed Process and Quality of Pelletized Feed in Broiler Diet
Provedor de dados: 89
Autores: Cheah,YS; Loh,TC; Akit,H; Kimkool,S.
ABSTRACT A feed production trial was conducted to study the effect of synthetic emulsifier and natural biosurfactant the process and quality of pelletized broiler feed. A corn-soy based broiler diet was formulated with fixed ratio 2:1 of oil-to-water with two types of emulsifiers, namely glyceryl polyethylene glycol ricinoleate synthetic emulsifier and lysophosphatidylcholine natural biosurfactant. T1: Basal diet with no water and no emulsifier; T2: Basal diet with water and no emulsifier; T3: Basal diet with water and synthetic emulsifier glyceryl polyethylene glycol ricinoleate; T4: Basal diet with water and a natural biosurfactant lysophosphatidylcholine as comparative treatment. The treatment diets were manufactured by a commercial feed mill. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emulsifier; Feed intact form; Pellet durability index; Pellet quality; Starch gelatinization.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500023

Effect of temperature on incubation period, embryonic mortality, hatch rate, egg water loss and partridge chick weight (Rhynchotus rufescens)
Provedor de dados: 89
Autores: Nakage,ES; Cardozo,JP; Pereira,GT; ,SA; Boleli,IC.
The aim of this study was to determine the effects of incubation temperature (34.5; 35.5; 36.5; 37.5 and 38.5ºC), on incubation period, embryonic mortality, hatching rate, water loss and chick weight at hatch, using daily incubation of partridge (Rhynchotus rufescens) eggs. The highest hatching percentage was obtained between 35.5 and 36.5ºC. Incubation length and temperature were inversely proportional. Water loss was lower in eggs incubated at low temperatures as compared to high temperatures. There was no difference among incubation temperatures in absolute and relative hatchling weights. Early embryonic mortality increased at low temperatures (&lt;35.5ºC), whereas intermediate and late embryonic mortality increased at high temperatures (&gt;36.5ºC)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incubation; Hatchability; Mortality; Temperature; Water loss.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200007

Effect of the calcium level and limestone particle size on the performance of semi-heavy layers in the second cycle of egg production
Provedor de dados: 89
Autores: Pizzolante,CC; Garcia,EA; Laganá,C; Saldanha,ESPB; Deodato,AP; Faitarone,ABG; Scherer,MR; Batista,L.
An experiment was carried out at the Research and Development Unit of Brotas aiming at evaluating dietary calcium level and limestone particle size on the production performance of commercial (Hy-Line Brown) layers in the second lay cycle. Experiment duration was 112 days. A total number of 288 hens, with 83 weeks of age in the beginning of the experiment, were used in a completely randomized experimental design in a factorial arrangement of 2x3, with two calcium levels (3.5 and 4.0%) and three limestone particle size compositions: 100% fine limestone (FL), 30% coarse limestone (CL) + 70% fine limestone (FL), and 50% (CL) + 50% (FL), with six replicates of eight birds each. Egg weight (g), egg production (%), egg mass (%), feed intake (g), feed conversion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Laying hens; Limestone; Particle size; Performance.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300006

Effect of the Inclusion of Organic Copper, Manganese, And Zinc in The Diet of Layers on Mineral Excretion, Egg Production, and Eggshell Quality
Provedor de dados: 89
Autores: Carvalho,LSS; Rosa,DRV; Litz,FH; Fagundes,NS; Fernandes,EA.
ABSTRACT This study aimed at evaluating the replacement of inorganic copper, manganese, and zinc sources by organic sources in the diet of laying hens during the second laying cycle in trace mineral excretion, egg production, and eggshell quality. Two hundred and fifty 100-week-old Dekalb hens were distributed according to a completely randomized design into five treatments with five replicates of ten birds each. The control treatment consisted of a basal diet with all trace minerals in the inorganic form. The other treatments consisted of a basal diet with a mixture of the minerals copper, manganese, and zinc in the organic form with concentrations of 100%, 90%, 80%, and 70% of the levels of inclusion of inorganic mineral sources in the control treatment....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chelated minerals; Commercial egg production; Egg quality.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000087

Effect of the litter material on drinking water quality in broiler production
Provedor de dados: 89
Autores: Garcia,RG; Almeida,Paz ICL; Caldara,FR; Nääs,IA; Pereira,DF; Freitas,LW; Schwingel,AW; Lima,NDS; Graciano,JD.
Considering the importance of drinking water and its effect on broiler performance, drinking water quality was studied using six different litter materials. The presence of coliform bacteria and Escherichia coli was investigated. The following litter materials were used in the trial: wood shavings, rice husks, chopped Napier grass (Pennisetum pupureum), 50% sugarcane bagasse (Saccharum L.) + 50% wood shavings, 50% sugarcane bagasse (Saccharum L.) + 50% rice husks, and plain sugarcane bagasse (Saccharum L.). A number of 1620 Ross® one-day-old chicks were reared in 54 pens measuring 4.5 m² each, equipped with a bell drinker and a tube feeder. Water samples were collected in sterile tubes on days 28 and 42 of the rearing period, and submitted to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler health; Contamination; Welfare.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300005

Effect of the supplementation of vitamins and organic minerals on the performance of broilers under heat stress
Provedor de dados: 89
Autores: Laganá,C; Ribeiro,AML; Kessler,AM; Kratz,LR; Pinheiro,CC.
The objective of this experiment was to evaluate the effect of diet supplementation with vitamins C and E and organic minerals Zn and Se on the performance of 1 to 35 day-old broilers from, kept under cyclic heat stress (25 to 32ºC). Four levels of vitamin-mineral supplementation were used (T1-control diet (60/30 IU of vit E for starter and growing diet, respectively, zero vit. C, 80 ppm of inorganic Zn, 0.3 ppm of inorganic Se); T2-control diet + 100 UI vit E and 300 ppm vit C/kg; T3-control diet + 40 ppm Zn and 0,3 ppm Se/kg; T4-control diet + T2 and T3 levels) and two environments - thermoneutral and cyclic heat stress (TN and HS) from 14 to 35 days of age. In the period when part of the birds was submitted to HS, from 14 to 35 days, it was observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascorbic acid; Dl-alpha-tocopherol; Selenium; Thermal regulation; Zinc.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100006

Effect of Thermal Embryonic Manipulation on the Quality of Male and Female Broiler Meat Submitted to Thermal Stress Pre-Slaughter
Provedor de dados: 89
Autores: Fernandes,JIM; Santos,TC; Kaneko,IN; Horn,D; Leyter,JR; Pasa,CLB.
ABSTRACT Adverse environmental conditions during rearing may negatively affect productivity and meat quality of the modern fast-growing broiler strains. Temperature manipulation during sensitive embryonic development periods may affect broilers' physiological responses to environmental conditions during rearing on commercial farms. The objective of this trial was to evaluate the effect of temperature manipulation during incubation and breeder age on the meat quality of male and female broilers submitted to heat stress during the pre-slaughter period. In this experiment, 1280 broiler chicks were distributed according to a completely randomized experimental design in a 2x2x2 factorial arrangement. Treatments consisted of two breeder ages (30 and 60 weeks),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Epigenetic; Incubation; Thermoregulation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200343

Effect of Transient Treatment with Propylthiouracil on Some Reproduction Traits and Live Weight of Japanese Quails
Provedor de dados: 89
Autores: Sogut,B; Sengul,T; Inci,H; Sengul,Y; Ayasan,T.
ABSTRACT This study was conducted to investigate the effects of transient treatment with propylthiouracil (PTU) on some reproduction traits and live weight of quails. The trial lasted 8 weeks. To accomplish this goal, 700 1-day-old quail chicks were used, randomly divided into 8 groups. PTU was added to feed by 0.1% and 0.5% /wt. The first 4 groups had 0.5% PTU at the age of 2-4, 4-6, 6-8 and 2-8 wk., respectively. The 5 th, 6 th and 7 th groups had 0.1% PTU at the age of 2-4, 4-6 and 6-8 wk., respectively, and the 8 th group was the control with no PTU. Quails were bled at 60 days of age. Then right and left testes were taken out and weighed. At the end of the trail, least square means of the live weight of the treatment groups were higher than the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quail; Propylthiouracil; Live weight; Reproduction traits.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400711

Effect of Tumbling Marination on Marinade Uptake of Chicken Carcass and Parts Quality
Provedor de dados: 89
Autores: U-chupaj,J; Malila,Y; Petracci,M; Benjakul,S; Visessanguan,W.
ABSTRACT The objectives of this study were to evaluate the effect of marination on marinade uptake of chicken carcasses and to determine the meat quality of carcass parts. In total, 45 eviscerated chicken carcasses were divided into three marinating treatments: no marination, marination in water, marination in non-phosphate and low-salt solution (NPLS). The study showed that the marinade uptake of chicken carcasses was higher than 4.0% for NPLS marination and than 3.5% for water marination when compared with the non-marinated treatment. However, raw chicken meat yield after cut-up was not significantly different (p≥0.05) among treatments. Carcasses marinated in NPLS solution presented higher water-holding capacity (WHC). The results showed that NPLS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marination; Chicken carcass; Marinade uptake; Water-holding capacity; Cut-up meat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100061

Effect of Two Strains of Probiotics on the Antioxidant Capacity, Oxidative Stress, and Immune Responses of Salmonella-Challenged Broilers
Provedor de dados: 89
Autores: Abudabos,AM; Alyemni,AH; Zakaria,HAH.
Abstract The present study aimed at evaluating the effect of two strains of probiotics (Bacillus subtilis PB6 and Bacillus Cereus var. toyoi) on selected indicators of the antioxidant status and immune responses of broilers before and after challenge with Salmonella enterica subsp. Typhimurium (S. typhimurium). Birds were distributed into the following five treatments: negative control (CTL−); negative control+S. typhimurium (CTL+); antibiotic+S. typhimurium, (AB); Toyocerin(r)+S. typhimurium (TOYO); and CloSTATTM+ S. typhimurium (CLOS). Birds in all treatments, except for CTL−, were orally challenged with 3 x109 CFUS. typhimurium at 16 days of age. The results showed that total antioxidant capacity (TAC), superoxide dismutase activity (SOD), and hydrogen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immune responses; Probiotics; Oxidative stress; Salmonella enterica; Total antioxidant capacity (TAC).
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100175

Effect of Ultra-fine Traditional Chinese Medicine Compounds on Regulation of Lipid Metabolism and Reduction in Egg Cholesterol of Laying Hens
Provedor de dados: 89
Autores: Song,Y; Zhu,J; Wang,T; Zhang,C; Yang,F; Guo,X; Liu,P; Cao,H; Hu,G.
ABSTRACT This study has the objective of investigating the effects of traditional Chinese medicine prescriptions (TCM) on serum lipid, abdominal and hepatic fat percentage, cholesterol content in eggs, and mRNA expression of genes apoA I and apoB100. One hundred and thirty five healthy (300-day-old) layers were randomly assigned to three treatments. The hens in control group were fed with the basal diet. The hens in the experimental groups (TCM 1 and TCM 2) were fed with the basal diet supplemented with 1% TCM 1 and 1% TCM 2 respectively over a period of 60 days. Laying performance and the serum parameters relevant to fat metabolism were measured. The results showed that no significant differences were found in average daily feed intake and egg weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hens; Cholesterol; Traditional Chinese medicine; Lipid metabolism; Apolipoprotein.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100153

Effect of Various Concentrations of an Anise Seed Powder (Pimpinella Anisum L.) Supplement on Selected Hematological and Biochemical Parameters of Broiler Chickens
Provedor de dados: 89
Autores: Al-Shammari,KIA; Batkowska,J; Gryzińska,MM.
ABSTRACT The objective of the study was to investigate the influence of anise seed (Pimpinella anisum L.) powder supplemented to the drinking water on selected blood parameters of broilers. In total, 360 one-day-old Hubbard Classic chicks were randomly divided into four groups with three replicates of 30 birds each. Anise seed powder was added at 0, 500, 750, and 1000mg/L to the drinking water offered to the C (control), T1, T2, and T3 groups respectively. The supplement was supplied for 56 days. When broilers were 28 and 56 days old, blood samples were collected (30 birds per group) by brachial vein puncture to evaluate the cellular components of blood (RBC, WBC, Hgb, HCT, H/L). The following serum biochemical parameters were evaluated: CHOL, GLU, TP,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood parameters; Poultry; Medicinal plants; Pimpinella anisum L.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100041

Effect of vitamin E levels on the cell-mediated immunity of broilers vaccinated against coccidiosis
Provedor de dados: 89
Autores: Silva,ICM da; Ribeiro,AML; Canal,CW; Vieira,MM; Pinheiro,CC; Gonçalves,T; de Moraes,ML; Ledur,VS.
Studies on the relationships between animal nutrition and immunity have sought reliable methodologies to measure responses. Cell-mediated immune response is similarly studied in humans. The cutaneous basophil hypersensitivity test (CBH) is one of the methods to measure that response and consists in the infiltration of inflammatory cells, particularly of lymphocytes and basophils, as result of the application of substances capable of inducing cell proliferation in determined sites, such as wings, wattle, and interdigital space in birds. CBH is considered a simple and fast method and can be applied in birds of different ages. In immunocompetence studies with poultry, phytohemagglutinin-P (PHA-P) is a commonly used substance, despite the variability of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Coccidiosis; Cell-mediated immune response; Newcastle disease; Vaccine; Vitamin E.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100008

Effect of Vitamin E Supplementation and High Stocking Density on the Performance and Stress Parameters of Broilers
Provedor de dados: 89
Autores: Selvam,R; Saravanakumar,M; Suresh,S; Sureshbabu,G; Sasikumar,M; Prashanth,D.
ABSTRACT The present study was carried out to investigate the effect of dietary supplementation with vitamin E and stocking density on the mortality, body weight gain, feed conversion ratio, European production efficiency factor, heterophil/lymphocyte (H/L) ratio and liver glutathione (GSH) and malondialdehyde (MDA) levels of broilers. In total, 570 one-day-old Vencobb 400 broiler chickens were randomly assigned to three treatments, with six replicates each. G1 served as normal control and birds were provided a normal floor space (0.0465 m2/bird from day 1 to 21 and 0.0929 m2/bird from day 22 to 42) and basal diet containing vitamin E at 70 g/ton feed (n=150). G2 and G3 birds were subjected to high stocking density (0.0279 m2/bird from day 1 to 21 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler performance; High stocking density; Oxidative stress; Vitamin E.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400587

Effect of Zinc Level and Source (Zinc Oxide Vs. Zinc Glycine) on Bone Mechanical and Geometric Parameters, and Histomorphology in Male Ross 308 Broiler Chicken
Provedor de dados: 89
Autores: Tomaszewska,E; Muszyński,S; Dobrowolski,P; Kwiecień,M; Winiarska-Mieczan,A; Świetlicka,I; Wawrzyniak,A.
ABSTRACT The aim of this study was to evaluate the effect of adding zinc (Zn) mineral supplements from organic (ZnGly) and inorganic (ZnO) sources to growing male Ross 308 chickens on the mechanical, geometric, and histomorphometrical parameters of long bones. A corn-soybean meal basal diet was supplemented with Zn at 50 or 100 mg·kg-1 of a premix, except the control group (0 suppl). The serum concentration of insulin-like growth factor 1 was higher in the ZnGly50 group compared with the control group. Positive influence of Zn on the femur is highlighted when considering the significant increase in parameters such as mean relative wall thickness, and maximum elastic and ultimate strengths after Zn administration. Zinc supplementation did not affect tibial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Chelate; Chicken; Histomorphometry; Zinc.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100159

Effectiveness of the compound chlorpyrifos+ cypermethrin+citronellal against Alphitobius diaperinus: laboratory analysis and residue determination in carcasses
Provedor de dados: 89
Autores: Silva,GS; Michels,MG; Toma,SB; Terra,FE; Soares,VE; Costa,AJ.
Effectiveness, biological security and the absence of residues in meat and/or eggs must be considered when recommending options for the control Alphitobius diaperinus in poultry production environments. This research study evaluated the effectiveness of cypermethrin+ chlorpyrifos+citronellal in the control of A. diaperinus, including analysis for the presence of residues of this compound in poultry carcasses (experimental farm). Two studies were carried out under laboratory conditions. One used paper filters a four dilutions of the compound, and the other used a container including with pulverized broiler litter and the compound. The analysis of carcasses for residues was conducted in broilers that raised in a broiler house treated (floor and/or litter)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alphitobius diaperinus; Broiler; Cypermethrin +Chlorpyrifos+Citronellal; Residue.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300003

Effects of 1.25-Dihydroxycholecalciferol and Hydroalcoholic Extract of Withania Coagulans Fruit on Bone Mineralization and Mechanical and Histological Properties of Male Broiler Chickens
Provedor de dados: 89
Autores: Hosseini,SJ; Kermanshahi,H; Nassirimoghaddam,H; Nabipour,A; Mirakzeh,MT; Saleh,H; Kazemifard,M.
Abstract An experiment was conducted to investigate the effects of hydroalcoholic extract of Withania coagulans (WC) fruit and 1.25-dihydroxycholecalciferol (1.25-(OH)2 D3) on bone mineralization, mechanical and histological properties of male broiler chickens at 21 and 42 d of age. A total of six hundred male day-old Ross 308 broiler chickens were randomly distributed according to a completely randomized experimental design in a 2×3×2 factorial arrangement with 12 treatments of five replicates of 10 birds each. Treatments consisted of two basal diets (positive control with adequate Ca level and negative control with 30% less Ca), three levels of WC (0, 100, or 200 mg/kg diet), and two levels of 1.25-(OH)2 D3 (0 or 0.5 µg/kg diet). Birds were housed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 1.25-dihydroxycholecalciferol; Withania coagulans; Bone; Broiler chickens.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100073

Effects of Acidified Yeast and Whey Powder on Performance, Organ Weights, Intestinal Microflora, and Gut Morphology of Male Broilers
Provedor de dados: 89
Autores: Kermanshahi,H; Heravi,RM; Attar,A; Pour,AR Abbasi; Bayat,E; Zadeh,M Hossein; Daneshmand,A; Ibrahim,SA.
ABSTRACT In the present study, we investigated the effects of acidified dried whey and acidified yeast product and their combination on broiler growth characteristics, intestinal microflora and gut morphology. Seven hundred and fifty day-old Ross 308 male broilers were fed one of 10 dietary treatments with 5 replicates in a randomized design. A corn-soybean meal based diet (control group) was supplemented with 3 levels (0.15, 0.30 and 0.45%) of acidified whey powder (AW), acidified yeast product (AY), and acidified whey powder and yeast product (AWY). Acidified yeast product improved ADG and FCR at d 42, but the effects of additives on productive performance were not significant across the entire rearing period. The highest level of AY increased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Microbial population; Yeast product; Gut morphology; Growth performance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200309

Effects of an Ionophore Coccidiostat (Monensin or Salinomycin), Sodium or Potassium Bicarbonate, or Both, and Bacitracin Methylene Disalicylate in Broiler Chicken Diets
Provedor de dados: 89
Autores: Hooge,DM; Cummings,KR; McNaughton,JL.
Peterson x Arbor Acres chicks were grown on used litter to 45 or 46 days of age in three pen trials. Coccidial inoculations were given by water at 14 days of age. Sodium bicarbonate (SBC; 0.20%) or potassium bicarbonate (PBC; 0.14%) was added to broiler chicken diets containing monensin (MON; 110 mg/kg) or salinomycin (SAL; 66 mg/kg) in Experiment 1. In Experiment 2, using SAL (55 mg/kg), three dietary bicarbonate treatments (SBC, 0.20%; PBC, 0.20%; or SBC + PBC 0.10% each) were tested with or without BMD R (55 mg/kg). Diets differing in SAL, BMD R, and SBC levels were evaluated in Experiment 3. Beneficial interaction was found between ionophores and bicarbonates for mortality (lower when SBC or PBC and MON) in Experiment 1. For main effects, in Experiment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacitracin; Coccidiosis; Ionophore coccidiostat; Potassium bicarbonate; Sodium bicarbonate.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100011

Effects of Arginine Supplementation on Organ Development, Egg Quality, Serum Biochemical parameters, and Immune Status of Laying Hens
Provedor de dados: 89
Autores: Yang,H; Ju,X; Wang,Z; Yang,Z; Lu,J; Wang,W.
Abstract This experiment was conducted to study the effects of arginine supplementation on organ development, egg quality, blood parameters, and immune status of laying hens. A total of 360 25-week-old brown Leghorn laying hens were randomly divided into three groups with six replicates of 20 birds each and fed diets supplemented with 0, 8.5, or 17 mg of L-arginine/kg for 42 days. Results showed that the weight of proventriculus and duodenum in the treatment supplemented with 17 mg/kg L-arginine was heavier than that of 0 mg L-arginine/kg treatment (p&lt;0.05). The weight of oviduct in the treatments supplemented with 17 mg/kg L-arginine was smaller than that of 0 and 8.5 mg L-arginine/kg treatment (p&lt;0.05), and the small yellow follicle amount in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arginine; Clinical blood parameters; Immune status; Laying hens; Organs development.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100181

Effects of Ascorbic Acid Injection in Incubated Eggs Submitted to Heat Stress on Incubation Parameters and Chick Quality
Provedor de dados: 89
Autores: Sgavioli,S; Matos Júnior,JB; Borges,LL; Praes,MFFM; Morita,VS; Zanirato,GL; Garcia,RG; Boleli,IC.
Dose-dependent positive effects on hatchability and hatchling weight have been attributed to ascorbic acid (AA) when eggs were submitted or not to intermittent heat stress during incubation. Fertile breeder (Cobb(r)) eggs were used to determine if the pre-incubation injection of AA in ovo affects the incubation and hatchling quality of egg incubated under thermoneutral or intermittent heat stress conditions. Eggs were not injected or injected with 0, 2,4, or 6% AA/100µL water and incubated at continuous thermoneutral (37.5ºC) or hot (39.0ºC) temperature. Eggshell temperature (EST) increased in the second half of the incubation period in all experimental groups. The EST of non-injected eggs and of those injected with water was higher when incubated at 39°C...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conductance; Hatchability; Egg mass loss; Hatchling weight; Eggshell temperature.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200181

Effects of Bile Acids and Lipase Supplementation in Low-Energy Diets on Growth Performance, Fat Digestibility and Meat Quality in Broiler Chickens
Provedor de dados: 89
Autores: Arshad,MA; Bhatti,SA; Hassan,I; Rahman,MA; Rehman,MS.
ABSTRACT The aim of this study was to investigate the effect of bile acids and lipase supplementation in low energy (LE) diets on growth, fat digestibility, serum lipid profile and meat quality of broilers. Seven hundred one-day-old broiler chicks were divided into 5 dietary treatments with five replicates of 28 birds each. The five treatments were: i) high energy diet (HE; metabolizable energy (ME) = 3,000 and 3,170 kcal/kg for starter and finisher diet), ii) low energy diet (LE; ME = 2,900 and 3,070 kcal/kg for starter and finisher diet), iii) LE diet supplemented with 300 g/ton bile acids (LEB), iv) LE diet supplemented with 180 g/ton lipase (LEL), v) LE diet supplemented both with bile acids (300 g/ton) and lipase (180 g/ton). The experiment lasted 35...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Enzyme; Energy density; Fat; Meat quality.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200315

Effects of boric acid and humate supplementation on performance and egg quality parameters of laying hens
Provedor de dados: 89
Autores: Hakan,KB; Gultekin,Y; Ozge,S.
In this study, the effects of boric acid and humate supplementation into hen diets on egg production and quality parameters and blood cholesterol levels were examined. For this aim, totally 160, 40 weeks of age, Hyline-White 98 layers were randomly divided into control and 3 treatment groups each containing 40 birds and 10 replicates (each with 4 birds). There was no boric acid or humate supplementation to control group diets (basal diet) where as treatment groups were supplemented with (basal diet plus) 90 ppm boric acid or 1 g/kg humate, or combination of these two feed additives, respectively. The experimental period lasted in 14 weeks. End of the trial there were no significant effects of dietary boric acid and humate inclusion on feed intake, egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Boron; Egg production and quality; Humic substance; Performance.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400008

Effects of calcium levels and limestone particle size on the egg quality of semi-heavy layers in their second production cycle
Provedor de dados: 89
Autores: Pizzolante,CC; Saldanha,ESPB; Laganá,C; Kakimoto,SK; Togashi,CK.
A 112-day trial was carried out to evaluate the effect of dietary calcium level and limestone particle size on the egg quality of 288 Hy-Line Brown semi-heavy layers, with 83 weeks of age at the beginning of the experiment. A completely randomized experimental design was applied in a 2x3 factorial arrangement, with two dietary calcium levels (3.5 and 4.0%) e three limestone particle size compositions (100% fine limestone (FL), with 0.185mm; 30% coarse limestone (CL), with 2.83mm, + 70% FL, with 0.185mm; and 50% CL, with 2.83mm, + 50% FL, with 0.185mm), with six replicates of eight birds each. Mean geometric diameter and in-vitro solubility of the limestone sources were, respectively, 0.185mm and 18.7% for the fine limestone, and 2.83mm and 10.5% for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Eggshell quality; Layers; Levels; Minerals.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200002

Effects of Cassava (Manihot Esculenta Crantz) Root Meal in Diets Containing Corn Dried Distillers Grains With Solubles on Production Performance, Egg Quality, and Excreta Noxious Gas Emission in Laying Hens
Provedor de dados: 89
Autores: Lei,XJ; Park,JH; Hosseindoust,A; Kim,IH.
ABSTRACT This study was conducted to evaluate effects of cassava (Manihot esculenta Crantz) root meal (CRM) in laying hen diets containing corn dried distiller grains with soluble (DDGS) on production performance, egg quality, and excreta noxious gas emission. Two hundred and forty Hy-Line brown laying hens (40 weeks of age) were randomly divided into 1 of 4 dietary treatments (10 replications with 6 hens per replication) for 6 weeks. The dietary treatments were as follows: 1) corn-based diet (CON); 2) diet containing 10% CRM and 8% DDGS (CRM10); 3) diet containing 20% CRM and 8% DDGS (CRM20); 4) diet containing 30% CRM and 8% DDGS (CRM30). The inclusion of 30% CRM in the diet containing 8% DDGS significantly decreased (p&lt;0.05) average daily feed intake...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia emission; Cassava root meal; Corn dried distillers grains with solubles; Egg quality; Production performance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200239

Effects of cereal type, enzyme and sodium butyrate addition on growth performance, carcass traits and intestinal morphology of broilers
Provedor de dados: 89
Autores: Shahir,MH; Moradi,S; Afsarian,O; Esmaeilipour,O.
A 2 × 2 × 2 factorial arrangement was conducted to evaluate the effects of cereal type (corn vs. wheat), enzyme supplementation (0 or 0.4 g/kg diet), and sodium butyrate addition (0 or 2 g/kg diet) on growth performance, carcass traits and intestinal morphology of male broilers from 10 to 42 d. A total of 600 male Arbor Acres chickens were assigned to eight dietary treatments in a completely randomized design, providing five replicate pens per treatment. Diets were formulated to meet or exceed NRC nutrient recommendations. When compared with birds fed corn-based diets, chickens fed wheat-based diets had inferior weight gain (1978 vs. 1807 g, p &lt; 0.01) and feed per gain ratio (1.81 vs. 1.93; p &lt; 0.01). Both weight gain (1870 vs. 1915 g; p &lt; 0.01)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzyme; Sodium butyrate; Performance; Intestinal morphology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300003

Effects of cinnamon, thyme and turmeric infusions on the performance and immune response in of 1- to 21-day-old male broilers
Provedor de dados: 89
Autores: Sadeghi,GH; Karimi,A; Padidar Jahromi,SH; Azizi,T; Daneshmand,A.
This study was conducted to investigate the effects of the replacement of drinking water by herb infusions on the performance, relative weight of internal organs, hematocrit and immune response to Newcastle disease virus of broiler chickens. A total of 540 male broiler chicks (Ross 308) were divided into five groups, corresponding to four different treatments and one control group. Treatments were replicated eight times, and the control group four times. Experimental treatments included infusions (5 grams per liter) of cinnamon, thyme and turmeric in equal ratios in replacement of drinking water. Experimental period lasted 21 days and all chicks were fed with a corn-soybean based diet. Results showed that all herbs infusions caused significant (p&lt;0.05)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cinnamon; Infusion; Thyme; Turmeric.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100003

Effects of Coriander Essential Oil on the Performance, Blood Characteristics, Intestinal Microbiota and Histological of Broilers
Provedor de dados: 89
Autores: Ghazanfari,S; Mohammadi,Z; Adib Moradi,M.
ABSTRACT Present study was conducted to investigate the effects of the dietary supplementation of coriander oil on broiler performance, blood characteristics, microbiota, and small intestine morphology measurements. A number of one-day-old broiler chickens (Ross 308) were allocated to five treatments, with four replicates according to a completely randomized design (CRD). Birds were offered either a corn-soybean meal basal diet (control), or the basal diet supplemented with 600 mg/kg of a flavophospholipol antibiotic, 100, 200, or 300 mg/kg coriander essential oil. At 42 days of age, two birds per replicate were selected for blood collection, slaughtered, and its intestinal microbiota and morphology were investigated. The results indicated that weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative growth promoters; Antibiotics; Broiler; Extract; Performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400419

Effects of corn particle size and physical form of the diet on the gastrointestinal structures of broiler chickens
Provedor de dados: 89
Autores: Dahlke,F; Ribeiro,AML; Kessler,AM; Lima,AR; Maiorka,A.
The objective of this experiment was to investigate the effects of different particle sizes, expressed as Geometric Mean Diameter (GMD) of corn (0.336mm, 0.585mm, 0.856mm and 1.12mm) of mash and pelleted broiler chicken diets on the weight of the gizzard, duodenum and jejunum+ileum; on the pH of the gizzard and small intestine and on the characteristics of the duodenal mucous layer (number and height of villi and crypt depth) in 42-day-old broilers. The physical form and the particle size of the diet had no significant effect on gizzard and intestine pH (p &gt; 0.05). A greater gizzard weight was seen in the birds receiving pelleted diet and particle size of 0.336mm (p &lt; 0.008). However, for the particle sizes of 0.856 and 1.12 mm, a greater weight was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crypt depth; Geometric mean diameter; Intestine weight; Intestine pH; Villus height.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100008

Effects of crossbreeding on slaughter traits and breast muscle chemical composition in chinese chickens
Provedor de dados: 89
Autores: Huang,Ai-xia; Li,Jin-jun; Shen,Jun-da; Tao,Zheng-rong; Ren,Jin-dong; Li,Guo-qing; Wang,De-qian; Tian,Yong; Yang,Fu-sheng; Ding,Wei-ping; Wu,Tian-xing; Lu,Li-zhi.
We investigated the effects of crossbreeding on slaughter traits and the chemical composition of chicken breast muscle. Trials were conducted using 120 broilers from four lines: Xiao-Shan chicken (XS), Xian-Ju chicken (XJ), Xiao-Shan chicken♂♂ × Xian-Ju chicken♀♀ (Zhenan 1, ZNY1) and Xiao-Shan chicken♂♂ × (Guang-Xi Yellow chicken♂♂×Xian-Ju chicken♀♀) ♀♀ (Zhenan 2, ZNY2). The birds were slaughtered at 120 days of age and the slaughter traits were measured. Breast muscles were sampled to determine chemical composition. The slaughter traits of hybrid chickens were improved. Both hybrid strains had higher intramuscular fat (IMF) and inosine-5'-monophosphate (inosinic acid, IMP). Concentrations of monounsaturated fatty acids (MUFA) in breast muscles from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Chicken; Crossbreeding; Fatty acid; Inosine-5'-monophosphate; Intramuscular fat; Slaughter traits.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400005

Effects of dietary arginine supplementation on broiler breeder egg production and hatchability
Provedor de dados: 89
Autores: Silva,LMGS; Murakami,AE; Fernandes,JIM; Dalla Rosa,D; Urgnani,JF.
This study investigated the effects of arginine (Arg) supplementation on broiler breeder egg production and egg quality. Male (30) and female (360) Ross® breeders, totaling 390 birds, were studied. A completely randomized design with five Arg levels (0.943%, 1.093%, 1.243%, 1.393%, 1.543% digestible Arg) and six replicates of 12 females and one male per experimental unit was applied. The following performance and egg quality were evaluated: lay percentage, albumen and yolk contents, average egg weight, egg specific gravity, and eggshell percentage and thickness. Hatchability and and embryo mortality were also determined. The applied dietary digestible Arg levels quadratically influenced egg production (p&lt;0.05), with the highest production obtained when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Egg weight; Embryo diagnosis; Hatch.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400006

Effects of Dietary Brewery Spent Grain Inclusion on Egg Laying Performance and Quality Parameters of Bovans Brown Chickens
Provedor de dados: 89
Autores: Gebremedhn,B; Niguse,M; Hagos,B; Tesfamariam,T; Kidane,T; Berhe,A; Gebresilassie,L; Gebreegziabher,L; Gebremariam,T; Gebremeskel,Y.
ABSTRACT Poultry rations are composed mainly of conventional cereal grains and proteins. Using non-conventional agro-industrial by-products may reduce the cost of production and thereby improve productivity. A study was conducted to evaluate the effect of dietary brewery spent grain inclusion on egg laying performance, quality parameters of bovans brown and profitability of the rations. A total of 200 pullets with similar body weight and age were randomly distributed to five treatments with four replications. The treatments were brewery spent grain (BSG) inclusion of 0, 10, 20, 30 and 40% levels for T1, T2, T3, T4 and T5, respectively. The CP and ME contents of treatment rations were 16.54-17.04% and 2871-2903 kcal/kg DM, respectively. Inclusion of the BSG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovans brown; Brewery spent grain; Egg quality; Productivity; Profitability.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200307

Effects of dietary calcium levels and limestone particicle size on the performance, tibia and blood of laying hens
Provedor de dados: 89
Autores: Pelicia,K; Mourao,JLM; Garcia,EA; Pinheiro,VMC; Berto,DA; Molino,AB; Faitarone,ABG; Vercese,F; Santos,GC; Silva,AP.
A total of 405 23-week-old ISA® Brown layers were distributed in a completely randomized experimental design in a factorial arrangement with nine treatments consisting of three dietary calcium levels (3.5, 3.75, and 4.5%) and three limestone particle sizes (100% fine limestone (FL), 70% FL + 30% coarse limestone (CL) and 50% (FL) + 50% (CL)), with nine replicates of five birds per cage. The following parameters were evaluated: percentage of lay, defective eggs, egg weight, egg mass, feed intake, feed conversion ratio (per kg eggs and per dozen eggs), and mortality. Dietary Ca levels significantly affected lay, with birds fed diets containing 4.5% calcium producing less eggs as compared to those fed 3.0 and 3.75% Ca. Egg production linearly decreased as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Mineral nutrition; Mineral particle size.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100005

Effects of dietary clinoptilolite and calcium levels on the performance and egg quality of commercial layers
Provedor de dados: 89
Autores: Berto,DA; Garcia,EA; Pelícia,K; Vercese,F; Molino,A de B; Silveira,AF da; Vieira Filho,JA; Murakami,ESF.
Among the different feed additives studied in poultry production, clinoptilolite, an aluminosilicate capable of adsorbing harmful substances and of improving live performance and egg and meat quality, was evaluated. The objective of the present study was to evaluate the influence of dietary clinoptilolite and calcium levels on the performance and egg quality of layers. In total, 576 layers were distributed according to a completely randomized experimental design in a 3 x 4 factorial arrangement (three calcium levels - 2.5, 3.1, or 3.7% and four clinoptilolite levels - 0.0, 0.15, 0.25, or 0.50%), with 12 treatments of six replicates of eight birds each. The experiment included four 28-d cycles. The experimental diets were based on corn and soybean meal....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia adsorption; Calcium metabolism; Zeolites.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300014

Effects of dietary clinoptilolite and calcium levels on uric acid and calcium blood concentrations and bone quality of commercial layers
Provedor de dados: 89
Autores: Berto,DA; Garcia,EA; Vercese,F; Santos,GC dos; Barreiro,FR; Molino,A de B; Pelícia,K; Silveira,AF da.
The objective of the present study was to evaluate the effect of clinoptilolite and calcium levels on uric acid and calcium blood profile and bone quality of commercial layers. A total of 576 birds were distributed according to a completely randomized experimental design in a 3x4 factorial arrangement (calcium levels of 2.5, 3.1, or 3.7% and clinoptilolite levels of 0.0, 0.15, 0.25, or 0.50%), into 12 treatments with six replicates of eight birds per cage (experimental unit). The experimental period was 112 days. The experimental diets were based on corn and soybean meal. Results were submitted to analysis of variance and means were compared by the test of Tukey at 5% significance level using SISVAR statistical package. Blood uric acid was significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineral homeostasis; Bone quality; Zeolite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200011

Effects of Dietary Copper on Growth Performance, Slaughter Performance and Nutrient Content of Fecal in Growing Goslings from 28 to 70 Days of Age
Provedor de dados: 89
Autores: Yang,Z; Qi,XM; Yang,HM; Dai,H; Xu,CX; Wang,ZY.
ABSTRACT A dose-response experiment with four dietary copper concentrations (4.17, 8.17, 12.17 and 16.17 mg/kg) was conducted to estimate the growth performance, slaughter performance, nutrient content of fecal and liver copper concentrations of growing Goslings from 28 to 70 d of age. Two hundred healthy male Yangzhou geese with similar body weight were randomized to four groups with five replicates per treatment and ten geese per replicate. Average daily feed intake, average daily gain and feed conversion ratio of geese for each pen were measured from 28 to 70 d of age. At 70 d of age, two geese were selected randomly from each pen and slaughtered to evaluate carcass quality. Metabolism experiment was conducted with five male geese from each group (one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goslings; Copper; Growth performance; Slaughter performance; Nutrient content of fecal.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100045

Effects of dietary crude protein on the growth performance, carcass characteristics and serum biochemical indexes of Lueyang black-boned chickens from seven to twelve weeks of age
Provedor de dados: 89
Autores: Liu,SK; Niu,ZY; Min,YN; Wang,ZP; Zhang,J; He,ZF; Li,HL; Sun,TT; Liu,FZ.
This study was undertaken to assess dietary crude protein (CP) concentration for optimum growth performance and carcass characteristics of Lueyang black-boned chicken. In total, six hundred 42-day-old Lueyang black-boned chicks were randomly assigned to five treatments, each with six replicate pens with ten males and ten females. The birds fed experimental diets with different levels of protein concentration of 120, 140, 160, 180 and 200 g kg-1 from seven to twelve weeks of age respectively. On day of 84, weight gain, feed intake, and feed:gain ratio were measured, and two chickens (one male and one female) close to the average weight of all birds in each treatment were selected from each pen and sacrificed to evaluate carcass traits and selected serum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Growth performance; Indigenous fowl; Lueyang black-boned chicken.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100103

Effects of dietary digestible lysine levels on protein and fat deposition in the carcass of broilers
Provedor de dados: 89
Autores: Tavernari,F de C; Buteri,CB; Rostagno,HS; Albino,LFT.
An experiment was carried out to evaluate the effects of different levels of digestible lysine in the diets of male and female broilers on protein and fat deposition. A total of 2160 Avian Farms broilers. A completely randomized experimental design was applied, and treatments consisted of the effects of three digestible lysine levels nested within each sex, with 12 replicates and 30 birds per experimental unit. The adopted digestible lysine levels corresponded to 92.5, 100.0, and 107.5% of the nutritional requirements of phases 1 to 21 days, 22 to 42 days, and 43 to 56 days of age, respectively. In each phase, the experimental diets contained similar calorie and protein levels within each sex. No significant effects of lysine levels were found on dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian Farms; Body composition; Gompertz equation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200005

Effects of Dietary Energy Concentration on Reproductive Hormone Secretion and Gene Expression in the Hypothalamus-Pituitary-Gonad Axis in Laying Geese
Provedor de dados: 89
Autores: Liu,Z; Xue,J; Luo,Y; Wang,Q; Zhong,H; Liang,M; Wang,C.
ABSTRACT The objective of the study was to investigate the mechanism by which dietary energy concentration regulates laying performance in geese. Eighty 558-day-old female Sichuan White geese were randomly allotted to two dietary treatments, each treatment was fed 1 of 2 experimental diets containing 10.00 (deficient) or 11.80MJ/kg metabolizable energy (sufficient) for 30 days. Laying performance, hormone concentration and gene expressions in hypothalamus-pituitary-gonadal axis were examined in geese. Birds fed the sufficient-energy diet had significantly higher average egg weight, daily laying rate, and lower feed to egg ratio than those fed the deficient-energy (p&lt;0.05). The birds fed sufficient-energy diet had higher concentration of serum insulin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy concentration; Laying geese; Reproductive hormone; Gene expression.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300306

EFFECTS OF DIETARY FERMENTED GARLIC ON THE GROWTH PERFORMANCE, RELATIVE ORGAN WEIGHTS, INTESTINAL MORPHOLOGY, CECAL MICROFLORA AND SERUM CHARACTERISTICS OF BROILER CHICKENS
Provedor de dados: 89
Autores: Lee,KW; Lee,KC; Kim,GH; Kim,JH; Yeon,JS; Cho,SB; Chang,BJ; Kim,SK.
ABSTRACT The present study was conducted to evaluate the effects of feeding broilers with garlic fermented by Leuconostoc citreum SK2556. A total of 250 male broiler chicks was randomly housed into 25 floor pens. Five dietary treatments with five replicates of 10 chicks each (n=50 chicks/treatment). A corn and soybean meal based diet was used as the control diet (NC). The experimental diets were formulated by mixing the basal diet either with antibiotics (10 ppm; PC) or fermented garlic (FG) at the concentrations of 0.1% (FG1), 0.3% (FG3) or 0.5% (FG5) in diets. Daily weight gain, feed intake, and feed:gain ratio were not affected by any of the dietary treatments. Average daily gain on day 21 linearly increased (p= 0.024) with increasing FG levels. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Growth performance; Gut morphology; Leuconostoc citreum SK2556.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300511

Effects of Dietary Hot Pepper Waste Powder on Gut Health and Small Intestine Properties in Japanese Quails
Provedor de dados: 89
Autores: Filik,G; Coşkun,I; Tekin,OK; Filik,AG.
ABSTRACT The present study was conducted to evaluate whether dietary hot pepper waste powder (HPWP) would affect the performance and small intestine histology parameters in Japanese quail chicks. A total of 160, one-day-old Japanese quail chicks were divided into 4 treatment groups of similar mean weight, comprising 4 subgroups of 10 chicks each. Chicks were fed on their basal diet supplemented by 0, 100, 200 or 400 mg/kg of dietary HPWP for each kg of starter (0 to 10 days), grower (11 to 24 days) and finisher (25 to 42 days) diets for 7 weeks. At the end of 42 days of age, 10 birds per subgroup were slaughtered and intestinal samples were taken to evaluate histomorphological analyses. The results showed that dietary HPWP supplementation did not affect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hot pepper waste powder; Quails; Growth performance; Small intestine; Gut health.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400304

Effects of Dietary Inclusion of Oil Sources With or Without Vitamin E on Body Composition and Meat Oxidation Level in Broilers*
Provedor de dados: 89
Autores: Taşdelen,EÖ; Ceylan,N.
ABSTRACT The objective of this study was to investigate the effects of rapeseed oil substitution and vitamin E supplemantation on performance and meat quality. 4 replacement levels of rapeseed oil with sunflower oil ( 0, 33.3 , 66.7 and 100%) and 2 levels of vitamin E (0 (50 I.U. from vitamin premix) 300 mg/kg) in a 2 x 3 factorial arrangement for a total of 8 treatments with 4 replicates each, containing 10 day-old male Ross 308 broilers, were examined in the experiment. Dietary treatments had no significant effect on carcass parameters, feed conversion (FCR) and mortality (p&gt;0.05). However, a significant interaction was observed between oil replacement and vitamin E: the negative effect of 100% sunflower oil on BWG (p&lt;0.01) was alleviated by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rapeseed oil; Vitamin E; Performance and meat quality; Oxidative stability; Omega-3 fatty acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500103

Effects of Dietary L-Glutamine or L-Glutamine Plus L-Glutamic Acid Supplementation Programs on the Performance and Breast Meat Yield Uniformity of 42-d-Old Broilers
Provedor de dados: 89
Autores: Ribeiro Jr,V; Albino,LFT; Rostagno,HS; Hannas,MI; Ribeiro,CLN; Vieira,RA; Araújo,WAG de; Pessoa,GBS; Messias,RKG; Silva,DL da.
ABSTRACT This study aimed at evaluating four dietary L-Glutamine (L-Gln) or L-Gln plus L-Glutamate (L-Glu) supplementation programs on the performance, breast yield, and uniformity of broilers. A total of 2,112 one-d-old male Cobb 500(r) broilers were distributed according to a randomized block design in a 2 × 4 factorial arrangement (L-Gln or L-Gln plus L-Glu × 4 supplementation programs), totaling eight treatments with 12 replicates of 22 broilers each. The supplementation programs consisted of the dietary inclusion or not of 0.4% of L-Gln or L-Gln plus L-Glu for four different periods: 0 days (negative control), 9d, 21d, and 42d. Feed intake (FI, g), body weight gain (BWG, g), feed conversion ratio (FCR, kg/kg), coefficient of variation of body weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast; Growth; Non-essential amino acids; Uniformity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000093

Effects of dietary lysine on broiler performance and carcass yield - meta-analysis
Provedor de dados: 89
Autores: Mendes,AS; Api,I; Silva,L; Silva,RTL; Sausen,L; Menezes,LFG; Morello,GM; Carvalho,EH.
There has been a great evolution and improvement in the nutrition of poultry and lysine has been used the reference amino acid to increase animal protein deposition. Therefore, a meta-analysis was performed with the objective of studying the effect of different dietary lysine levels on the performance and carcass yield of broiler chickens. In total, 21 studies published in Brazil since 1999 were included. Bird performance considered daily weight gain (178 observations) and feed conversion ratio (188 observations) results. Carcass quality was evaluated relative to carcass yield (24 observations), abdominal fat (24 observations) and breast meat yield (30 observations). Data were checked for normality and were submitted to analysis of variance. Weight gain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Nutrition; Poultry production.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400013

Effects of Dietary Protein Level and Betaine Supplementation on Nutrient Digestibility and Performance of Japanese Quails
Provedor de dados: 89
Autores: Ratriyanto,A; Indreswari,R; Nuhriawangsa,AMP.
ABSTRACT This study investigated the effects of dietary protein levels and betaine supplementation on nutrient digestibility and performance of Japanese quails. In total, 765 Japanese quails were randomly assigned to a 3×3 factorial arrangement, with five replicates of 17 quails each. Three basal diets were formulated to contain three crude protein levels (16.5, 18.0, and 19.5%). Each protein level was supplemented with 0, 0.06, and 0.12% betaine. The diet with 16.5% dietary crude protein with no betaine supplementation resulted in the lowest crude fiber digestibility, while the 18.0% CP diet supplemented with 0.12% betaine generated the highest crude fiber digestibility (p&lt;0.05). The diets with 18.0 and 19.5% crude protein increased crude fiber...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Betaine; Digestibility; Laying Japanese quails; Performance; Protein.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300445

Effects of Dietary Supplementation of Fumaric Acid on Growth Performance, Blood Hematological and Biochemical Profile of Broiler Chickens Exposed to Chronic Heat Stress
Provedor de dados: 89
Autores: Ding,J; He,S; Xiong,Y; Liu,D; Dai,S; Hu,H.
ABSTRACT The aim of this study was to investigate the effects of dietary fumaric acid (FA) on the growth performance, hematological parameters and serum biochemistry in broilers under heat stress (HS) condition. A total number of 200 broilers were allocated to five treatments including the thermoneutral group, which was reared at standard ambient temperature and fed basal diet (CONT) and four heat-stressed groups, which were held at 32 ± 1ºC aged from 22 to 42 days and fed the basal diet supplemented with 0, 5, 10 and 15 g/kg FA, respectively. On day 42, body weight and feed intake were measured and feed conversion ratio was calculated. Blood was collected for the estimation of hematological and biochemical parameters. HS impaired the growth performance,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fumaric acid; Broiler; Chronic heat stress; Heamatology; Biochemistry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100313

Effects of Dietary Supplementation of Soy Isoflavones on the Performance and Egg Quality in Native Chinese Breeder Hens
Provedor de dados: 89
Autores: Abdelghani,E; Xing,W; Li,Y; Shen,D; Alsiddig,MA; Li,C.
ABSTRACT To investigate the effects of soy isoflavones (ISF) on the laying performance of Xueshan breeder hens at different phases of the egg production cycle, 32 weeks (wks) old local Chinese breeder hens were assigned to two groups with three replicates (750 hens/replicate) for control and treatment groups. Then every group was divided into three sub-groups following 4, 12, and 20 wks administration of control or ISF diet. General Linear Model procedure was used (2× 3), and treatments were considered of two factors (diets and time) with different levels (control and ISF diets; 4, 12, and 20 wks of diet supply time). Basal diet with 3 mg/kg ISF was used. Performance, egg quality, organs relative weight and cholesterol level were measured at three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Xueshan hens; Egg quality; Hatching traits; Organs weight; Cholesterol.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400315

Effects of Dietary Supplementation with Red Algae Powder (Chondrus crispus) on Growth Performance, Carcass Traits, Lymphoid Organ Weights and Intestinal pH in Broilers
Provedor de dados: 89
Autores: Martínez,Y; Ayala,L; Hurtado,C; Más,D; Rodríguez,R.
ABSTRACT The aim of this study was to determine the effects of dietary supplementation with red algae powder (Chondrus crispus) on the growth performance, carcass traits, lymphoid organ weights and intestinal pH y in broiler chickens. A total of 300 1-day-old B34 line male broiler chickens were randomly allotted to three treatments, four replicates per treatment and 25 birds per replicate. The experimental treatments consisted of a basal diet (T0) and dietary supplementation of 0.30 (T2) and 0.40% (T2) red algae powder. Body weight at 1, 21 and 32 days did not show significant differences (p&gt;0.05) among treatments. At 21 days, T1decreased (p&lt;0.05) the feed intake and feed conversion ratio. However, from 22 to up to 32 days, these productive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Red algae broiler performance lymphoid organ; Intestinal pH.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400317

Effects of Dietary Supplementation with Tributyrin and Coated Sodium Butyrate on Intestinal Morphology, Disaccharidase Activity and Intramuscular Fat of Lipopolysaccharide-Challenged Broilers
Provedor de dados: 89
Autores: Xiong,J; Qiu,H; Bi,Y; Zhou,HL; Guo,S; Ding,B.
ABSTRACT The objectives of this study were to investigate the effects of tributyrin (TB) and coated sodium butyrate (CSB) on intestinal morphology, disaccharidase activity and intramuscular fat of broilers challenged with lipopolysaccharide (LPS). A total of 160 1-day-old healthy Cobb broilers were randomly allocated into four groups: (1) control; (2) LPS, in which broilers were fed a basal diet and intraperitoneally injected with 500 μg/kg LPS on days 38, 40 and 42; (3) TB, in which LPS-challenged broilers were fed basal diet supplemented with 500 mg/kg TB; and (4) CSB, in which LPS-challenged broilers were fed basal diet supplemented with 877 mg/kg CSB. Addition of TB and CSB inhibited (p&lt;0.05) the decrease in villus height in the duodenum and ileum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Coated sodium butyrate; Intestine; Lipopolysaccharide; Tributyrin.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400707

Effects of dietary trace mineral sources and levels fed to layers in their second laying cycle on the quality of eggs stored at different temperatures and for different periods
Provedor de dados: 89
Autores: Saldanha,ESPB; Garcia,EA; Pizzolante,CC; Gonçalves,HC; Faittarone,ABG; Sechinato,AS; Laganá,C.
This study aimed at evaluating the effects of trace mineral levels and sources supplemented to diets fed to semi-heavy layers in their second laying cycle on the quality of eggs stored for 14 days at different temperatures. The experimental diets consisted of the inclusion of inorganic trace minerals (T1 - control: 100% ITM) and five supplementation levels of organic trace minerals (carboaminophopho chelates) (110, 100, 90, 80, and 70% OTM). Trace mineral inclusion levels (mg/kg feed) were: T1: control - 100% ITM: Zn (54), Fe (54), Mn (72), Cu (10), I (0.61) Se (0.3); T2 - 110% OTM: Zn (59.4), Fe (59.4), Mn (79.2), Cu (11.88), I (1.21) Se (0.59); T3 - 100%: OTM: Zn (54), Fe (54), Mn (72), Cu (10.8), I (1.10) Se (0.54); T4 - 90% OTM: Zn (48.6), Fe (48.6),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inorganic trace minerals; Organic trace minerals; Trace mineral requirements.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400002

Effects of Dietary Zinc Levels on the Growth Performance, Organ Zinc Content, and Zinc Retention in Broiler Chickens
Provedor de dados: 89
Autores: Zhang,TY; Liu,JL; Zhang,JL; Zhang,N; Yang,X; Qu,HX; Xi,L; Han,JC.
ABSTRACT The objective of this study was to investigate the optimal zinc (Zn) requirement of broiler chickens based on Zn retention. On the day of hatch, 350 male Ross 308 broilers were randomly assigned to seven treatments with five replicates of ten birds each. Zinc was supplemented as ZnSO4·7H2O at 0, 20, 40, 60, 80, 100, or 120 mg/kg in the starter diet (fed from 1 to 21 d of age) and at 0, 16, 32, 48, 64, 80, or 96 mg/kg in the grower diet (fed from 22 to 42 d of age). The analyzed Zn levels were 34.98 and 27.57 mg/kg in the basal starter and grower diets, respectively. Supplemental Zn levels did not influence body weight gain, feed intake, feed conversion ratio, or liver Zn content of broilers at 21 and 42 d of age (p&gt;0.05). Tibia ash Zn content...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Growth; Requirement; Retention; Zinc.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100127

Effects of Dietary Zinc Oxide and a Blend of Organic Acids on Broiler Live Performance, Carcass Traits, and Serum Parameters
Provedor de dados: 89
Autores: Sarvari,BG; Seyedi,AH; Shahryar,HA; Sarikhan,M; Ghavidel,SZ.
ABSTRACT This experiment was carried out to evaluate the effect of different dietary supplementation levels of zinc oxide and of an organic acid blend on broiler performance, carcass traits, and serum parameters. A total of 2400 one-day-old male Ross 308 broiler chicks, with average initial body weight 44.21±0.19g, was distributed according to a completely randomized design in a 2 x 3 factorial arrangement. Six treatments, consisting of diets containing two zinc oxide levels (0 and 0.01% of the diet) and three organic acid blend levels (0, 0.15, and 0.30%) were applied, with eight replicates of 50 birds each. The experimental diets were supplied ad libitum for 42 days. There were significant performance differences among birds fed the different zinc oxide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Organic acid blend; Zinc oxide.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000039

Effects of Diets with Graded Levels of Canola Meal on the Growth Performance, Meat Qualities, Relative Organ Weights, and Blood Characteristics of Broiler Chickens
Provedor de dados: 89
Autores: An,BK; Jung,JH; Oh,ST; Kang,CW; Lee,KW; Lee,SR.
ABSTRACT This experiment was conducted to evaluate the dietary supplementation of canola meal (CM) on the growth performance, carcass characteristics, antibody titers against Newcastle disease virus and Infectious bronchitis virus, and blood profiles of broiler chickens. In total 600 day-old feather-sexed Ross male broiler chicks were randomly assigned into five treatments with six replicates of 20 birds each for 35 days. Treatments consisted of five experimental diets containing 0 (control), 3, 5, 10, or 15% canola meal (CM). Final body weight (BW) was not affected by the dietary treatments. Daily BW gain (DWG) and feed intake linearly decreased as dietary CM inclusion increased during the starter phase (p&lt;0.0001), but not during the grower and total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Canola meal; Growth performance; Meat quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200351

Effects of Different Amounts of Blue Lupine (L. Angustifolius L.) in The Diets of Heavy-Type Turkeys on Their Growth Rate, Carcass and Meat Qualities
Provedor de dados: 89
Autores: Juodka,R; Nainiene,R; Juskiene,V; Juska,R; Stuoge,I; Leikus,R.
ABSTRACT A study was carried out to determine the effects of soybean meal replacement with different amounts of blue lupine in the diets of turkeys on the growth rate, anatomic carcass dissection data, chemical indicators of breast and thigh muscles and the content of tryptophan and oxyprolin. In total three hundred and sixty cross BIG-6 turkeys were allotted to two control and ten experimental groups of 30 one-day-old turkeys. The control group of turkeys was fed the diet containing soybean meal, whereas the trial groups were offered different amounts (from 20 to 30%) of lupines. Group 4 and 5 were additionally given probiotic mixture Bio Plus 2B and allzyme SSF, respectively. Soybean oil replacement from 20 to 30% lupine in the diet had no influence on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomic carcass dissection data; Chemical indicators; Growth rate; Lupine; Turkey.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500117

Effects of Different Anti-Stressors on Growth, Serum Chemistry and Meat Quality Attributes of Japanese Quail
Provedor de dados: 89
Autores: Rasul,M; Mehmood,S; Ahmad,S; Javid,A; Mahmud,A; Rehman,A; Usman,M; Hussain,J; Ahmad,M; Azhar,M.
ABSTRACT The aim of the present study was to evaluate the effect of different anti-stressors on growth performance, carcass traits, bloodchemistry and meat quality attributes of broiler Japanese quail. For this purpose, a total of 1,875 quail chicks were procured and arranged according to completely randomized design, birds were divided into 5 treatment groups having 5 replicates of 75 birds each. The treatments consisted of four anti-stressors i.e., synthetic anti-stressors (Vitamin C and Betaine) and natural anti-stressors (Turmeric and Chia Seed) along with a control group. Bird’s diets were supplemented with vitamin C, betaine, turmeric and chia seed @ 600 mg/kg, 700 mg /kg, 300 mg/kg and 7,000 mg/kg, respectively. After four weeks, 10 birds per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Japanese quail; Anti-stressors; Growth performance; Carcass traits; Serum chemistry.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100307

Effects of Different Dietary Levels of Two Types of Olive Pulp and Exogenous Enzyme Supplementation on the Gastrointestinal tract size, Immunology and Hematology of Broilers
Provedor de dados: 89
Autores: Sayehban,P; Seidavi,A; Dadashbeiki,M; Ghorbani,A; Araújo,WAG; Albino,LFT.
ABSTRACT The effects of the dietary inclusion of olive pulp (OP) and the supplementation of a commercial enzyme blend (ENZ) on the gastrointestinal tract (GIT) size, and immune and hematological parameters were evaluated. In total, 600 one-day-old Ross 308 male broiler chicks were divided into 6 treatments according to a completely randomized design, in a 2×2×2 factorial scheme, consisting of the dietary inclusion of two olive pulp levels (50 and 100 g/kg in diet), two pulp categories (processed and unprocessed), and the inclusion or not of an enzyme blend. On d 42, birds were euthanized and blood samples were collected, and lymphoid, hematologic, and GIT organs were measured. The inclusion of 100g/kg OP in the diets increased jejunum relative weight (J%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Immune responses; Natural antioxidants; Processing; Visceral physiology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000073

Effects of different dietary lipids on the fatty acid composition of broiler abdominal fat
Provedor de dados: 89
Autores: Rondelli,SG; Martinez,O; García,PT.
The effect of three different lipid sources (soybean oil, chicken oil or bovine fat) on the abdominal fat fatty acid composition in 50 day-old broiler chickens was evaluated. A completely randomized design was used, with 4 treatments, 8 repetitions and 40 Arbor Acres broiler chicks of each sex. The four treatments were isocaloric and isoproteic with the following characteristics: T1 Control (Soybean-corn); T2 Control + 3% soybean oil; T3 Control + 3% chicken oil; and T4 Control + 3% bovine fat. The lipids from the diets had significantly statistical effects (p&lt;0,05) on the fatty acid composition of broiler abdominal fat. Multivariate techniques also showed differences in fatty acid composition within treatments due to sex. The studied dietary lipids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abdominal fatty acids; Carcass composition; PUFA.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300007

Effects of Different Dietary Rosmarinus Officinalis Powder and Vitamin E Levels on the Performance and Gut Gross Morphometry of Broiler Chickens
Provedor de dados: 89
Autores: Rostami,H; Seidavi,A; Dadashbeiki,M; Asadpour,Y; Simões,J.
ABSTRACT The main objective of the present study was to evaluate the effects of the dietary addition of different levels of rosemary powder (RP) and vitamin E (VitE) on broiler performance and gut gross morphometry. A total of 270 one-day-old Ross 308 male chicks were randomly assigned to nine dietary treatments with three replicates of10 birds each. Treatments consisted of diets were supplemented with 0, 0.5 or 1.0% RP and 0, 100 or 200 mg/kg VitE (alpha-tocopherol acetate). Feed intake and weight gain were recorded weekly. On day 42, one bird per replicate was euthanized after blood sampling. Gastrointestinal tract segments were measured and/or weighed. Means were compared by least significant difference. Overall, broilers fed1.0% RP presented lower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gut; Nutrition; Rosemary; Vitamin E; Weight gain.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000023

Effects of different dietary vitamin combinations on the egg quality and vitamin deposition in the whole egg of laying hens
Provedor de dados: 89
Autores: Zang,H; Zhang,K; Ding,X; Bai,S; Hernández,JM; Yao,B.
The experiment was conducted to evaluate the effects of different dietary vitamin combinations on the egg quality and vitamin concentrations in the eggs of commercial laying hens. A total of 1,800 25-week-old Lohman pink-shell hens were randomly assigned to four dietary vitamin treatments as follows: NRC(1994) level, NRC (1994) level with Hy.D® (25-hydroxy-cholecalciferol), Local level (current average industry level in China) and OVN® level (optimum vitamin nutrition level), with 10 replicates per treatment and 45 layers per replicate. Hens were housed in commercial laying cages with three birds per cage and given ad libitum access to feed. Results showed the hens that received the fortified vitamin levels in the OVN® treatment had a significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Hy.D®; Laying hen; OVN®; Vitamin deposition.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300005

Effects of different levels of dietary crude protein and threonine on performance, humoral immune responses and intestinal morphology of broiler chicks
Provedor de dados: 89
Autores: Abbasi,MA; Mahdavi,AH; Samie,AH; Jahanian,R.
The present study aimed at investigating the effects of different dietary crude protein (CP) and threonine (Thr) levels on the performance, immune responses and jejunal morphology of broiler chicks. A total of 432 broiler chicks were randomly assigned to a 3×3 factorial arrangement of treatments including three different CP dietary levels (90, 95, and 100% of Ross 308 recommendations) and Thr (100, 110, and 120% of Ross specifications) dietary levels. Performance parameters were recorded for the starter (1-12 days), grower (13-24 days) and finisher (25-42 days) periods. Birds were subjected to different antigen inoculations to evaluate antibody responses. At day 42 of age, two randomly-selected birds per replicate were slaughtered to measure carcass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight gain; Broilers; Immunocompetence; Jejunal histological morphology; Protein and threonine.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100005

EFFECTS OF DIFFERENT LEVELS OF TWO TYPES OF OLIVE PULP WITH OR WITHOUT EXOGENOUS ENZYME SUPPLEMENTATION ON BROILER PERFORMANCE AND ECONOMIC PARAMETERS
Provedor de dados: 89
Autores: Sayehban,P; Seidavi,A; Dadashbeiki,M; Ghorbani,A; Araújo,WAG; Albino,LFT.
ABSTRACT The effects of the dietary inclusion of olive pulp (OP) and supplementation birds with a commercial enzyme blend (ENZ) on the performance of broilers were evaluated. Six hundred one-day-old male Ross 308 broilers were divided according to a completely randomized design into 10 treatments in a 2×2×2+2 factorial arrangement, consisting of two olive pulp levels (50 and 100 g/kg diet), two pulp categories (processed and non-processed), the inclusion or not of an enzyme blend supplement, and two control treatments without OP and the inclusion or not of the enzyme blend in the diet. Feed intake (FI), weight gain (WG), feed efficiency (FE), energy intake (EI), energy efficiency (EE), protein intake (PI), protein efficiency (PE), feed cost per kg live...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feedstuffs; Byproducts; Poultry; Processing.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300489

Effects of Different Mating Strategies on Productive Performance, Bird Welfare and Economic Appraisal of Broiler Breeder under Two Production Systems
Provedor de dados: 89
Autores: Shaheen,MS; Mehmood,S; Mahmud,A; Riaz,A; Mehmood,A; Ahmad,S.
ABSTRACT Objectives of the study were to investigate influence of artificial insemination (AI) in caged and floored flock in comparison to natural mating (NM) on broiler breeders’ welfare, productive performance and economic appraisal. To execute this experiment, a total of 1440 pullets of Ross-308 Parent Stock along with 168 males were picked from a commercial flock and divided into three groups i.e., AIC=AI in cages, AIF=AI on floor and third was NM=NM on floor. Each group carried 480 females (HH) while 168 males were divided into 41, 48 and 58 for AIC, AIF and NM, respectively. During both phases all procedures and studied parameters were the same except the sperm dose rates which were changed during post peak. According to the results, significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Economical appraisal; Housing systems; Mating strategies; Serum chemistry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400311

Effects of different nutritional plans on broiler performance
Provedor de dados: 89
Autores: Buteri,CB; Tavernari,F de C; Lelis,GR; Rostagno,HS; Albino,LFT.
An experiment was carried out at the Department of Animal Science of the Federal University of Viçosa, Brazil, to evaluate the effects of different nutritional plans on the performance of male and female Ross broilers. A completely randomized experimental design with a 6x2 factorial arrangement (six nutritional plans x two sexes) with six replicates of 20 birds per experimental unit was applied. The nutritional plans adopted for males and females included 3, 5, or 28 feeds, and the other 3 plans included 28 feeds containing 92.5, 100, and 107.5% of digestible lysine requirements established according to a mathematical model developed exclusively for Ross broilers. The results showed that the tested 28-feed feeding programs are equivalent, and allow similar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding programs; Lysine levels; Nutritional requirements.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400003

Effects of Different Selection Methods Using Body Weight on Egg Yield Parameters in Japanese Quail
Provedor de dados: 89
Autores: Baylan,M.
ABSTRACT This experiment was conducted to investigate the effects of different selection methods of parent lines on the body weight of Japanese quails. For this purpose, line M55 was subjected to individual selection for body weight at 5 weeks of age, while a reciprocal recurrent selection method was applied to lines R33 and S55. Selection lasted two generations. Body weight changes, age and weight at sexual maturity, egg weight, and egg production were investigated in the parent generations as well as in the selection lines. Body weight at 5 weeks of age of the parents of the M55, R33 and S55 lines were 299.0, 285.3, and 280.4 g in the first generation, and 314.8, 316.6, and 306.8±3.11 g in the second generation, respectively. The first generation of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Egg production; Egg weight; Japanese quail selection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400623

Effects of Different Types of Red Ginseng Marc and Fermented Red Koji Blend as Feed Additives on Blood Parameters and Egg Yolk Fatty Acid Profiles of Laying Hens
Provedor de dados: 89
Autores: Lee,GD; Choi,IH.
ABSTRACT The purpose of this study was to evaluate the effects of three different forms (powder, pellet, and coated pellet) of red ginseng marc (RGM) and fermented red koji (FRK) feed additive on the blood parameters and fatty acid (FA) profiles of laying hens, after two months of dietary supplementation. A number of 240 40-week-old Hy-line Brown laying hens were randomly designated to four dietary treatments, each with six replicates of 10 hens each, in a completely randomized design. The control group was fed a basal diet, and the other three treatments groups were fed 1% RGM powder mixed with FRK, pellets of 1% RGM with FRK, and coated pellets of 1% RGM with FRK. The powder and coated pellet diets contained the lowest total cholesterol and glucose...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Red ginseng marc; Fermented redkoji; Blood parameters; Fatty acid profiles.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300441

Effects of E. Coli Infection on the Expressions of TGF-β/Smads Signaling Pathway in Broiler Intestine
Provedor de dados: 89
Autores: Juang,J; Yin,H; Zhang,C; Wang,J.
ABSTRACT This experiment aimed to investigate whether Escherichia coli (E. coli) infection could affect the TGF-β/smads signaling pathway in the jejunal tissue of chickens. One-day-old Cobb 500 broilers were randomly divided into 2 groups and treated with intraperitoneal E. coli or broth injection. Clinical signs of the birds were assessed every day. Spleen and bursa of Fabricius of the birds, post-infection (pi), were collected to evaluate immune organ index. Jejunal tissues were collected to ascertain the expression of TGF-βs, TβRs, and Smads. The results showed that the infected birds had significantly higher index of the spleen (24hrs and 48hrs pi) compared with birds in the control group (p&lt;0.05). The relative gene expression of TGF-β4 increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: TGF-β/Smads; Intestinal lesion; E. coli; Chicken.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100311

Effects of energy level in finisher diets and slaughter age of on the performance and carcass yield in broiler chickens
Provedor de dados: 89
Autores: Albuquerque,R de; Faria,DE de; Junqueira,OM; Salvador,D; Faria Filho,DE de; Rizzo,MF.
Male broilers were used to evaluate the effects of different energy levels in finisher diets and age of slaughter on performance, production pattern and carcass yield. Experimental design was a 2x3 factorial arrangement: energy level (ME) in the finisher diet (3,200 and 3,600 kcal ME/kg) and age of slaughter (42, 49 and 56 days), resulting in six treatments with four replicates. The finisher diet was fed only in the last week of the growing period. Characteristics evaluated were feed consumption (FC), body weight gain (WG), feed conversion (FC), energy intake (EI), caloric conversion (CC), efficiency production index, production pattern, and carcass yield. The results showed better WG and CC for broilers fed 3,200 kcal ME/kg finisher diet. Broilers...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carcass yield; Energy levels; Feeding program; Finisher diet.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200002

Effects of feeding metabolite combinations from lactobacillus plantarum on plasma and breast meat lipids in Broiler Chickens
Provedor de dados: 89
Autores: Loh,TC; Thanh,NT; Foo,HL; Hair-Bejo,M.
The effects of feeding different doses of metabolite combination of L. plantarum RS5, RI11, RG14 and RG11 strains (Com3456) on cholesterol reduction in plasma and breast meat in broiler chickens and the possible mechanism was studied. A total of 504 male Ross broilers were grouped into 7 treatments and offered with different diets: (i) standard corn-soybean based diet (-ve control); (ii) standard cornsoybean based diet + neomycin and oxytetracycline (+ve control); (iii) standard corn-soybean based diet + 0.1% metabolite combination of L. plantarum RS5, RI11, RG14 and RG11 strains (Com3456); (iv) standard corn-soybean based diet + 0.2% of Com3456; (v) standard cornsoybean based diet + 0.3% of Com3456 (vi) standard corn-soybean based diet + 0.4% of Com3456...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolite combinations; Lactobacillus plantarum; Cholesterol; Very low density lipoprotein; Chicken.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400004

Effects of Flammulinavelutipes Stem Base on Microflora and Volatile Fatty Acids In Caecum of Growing Layers under Heat Stress Condition
Provedor de dados: 89
Autores: Wang,S; Mahfuz,S; Song,H.
ABSTRACT The present study was undertaken to investigate the effects of Flammulinavelutipes stem base (FVS) on growth performance, microbial flora and volatile fatty acids of growing layers under heat stress condition. A total of 72 ISA Brown hens were randomly divided into six treatments: thermoneutral temperature control group (CON), heat stress control group (HS), heat stress antibiotic group (ANT) as positive control and heat stress FVS groups (20, 40 or 60 g/kg FVS). The experimental period had a duration of 28 d (days 84-112). On day 98, daily gain average was significantly higher (p&lt;0.05) in the FVS groups than in the HS group. The number of bands in the FVS groups were higher (p&lt;0.05) than in the HS group on day 98. The microbial similarity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hens; Thermal stress; Microbial flora; Mushroomstembase; Short chain fatty acids.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400303

Effects of Gaba on the Thymus Cytokines of Wenchang Chickens Submitted to Heat Stress
Provedor de dados: 89
Autores: Xie,XZ; Liang,C; Li,MH; Chen,Z.
ABSTRACT Under routine feeding conditions, 1-day-old male chicks were randomly divided into control group (CK), heat-stress group (HS), and GABA + heat stress group (GABA+HS). The thymus contents of IL-1, IL-2, TGF-β1, IFN-γ, GH and HSP70 were determined by enzyme-linked immunosorbent assays. The results showed that: (1) IL-1 and TGF-β1 contents of HS group were significantly lower than those of the CK group (p&lt;0.05), and those of the GABA+HS group were significantly higher relative to the HS group (p&lt;0.05); (2) IL-2 and IFN-γ contents of the HS group were significantly higher than those of the CK group (p&lt;0.05), and those of the GABA+HS group were significantly lower relative to the HS group (p&lt;0.05);(3) the thymus GH content of all three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat stress; GABA; Cytokines; Thymus; Chicks.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100143

Effects of Glutamine on Digestive Function and Redox Regulation in the Intestines of Broiler Chickens Challenged with Salmonella Enteritidis
Provedor de dados: 89
Autores: Wu,Q; Liu,Z; Li,S; Jiao,C; Wang,Y; Wang,Y.
ABSTRACT The aim was to investigate the effect of glutamine (Gln) on broilers challenged with Salmonella Enteritidis. 240 1-day-old birds were divided into four groups in a completely randomized design, each of which included 6 replicates with 10 birds per replicate. Group I served as the unchallenged, untreated control (CON). All birds in groups II (SCC) - IV were challenged with 2.0 × 104 CFU/mL of S. Enteritidis. Birds in group III and IV were treated with 0.5% (Gln 1) and 1.0% (Gln 2), respectively, of Gln. The results indicated that S. Enteritidis infection led to a decrease in the average body weight at d 7, 14, and 21 (p&lt;0.05). Chickens fed the Gln showed improved average body weights in comparison with the SCC group (p&lt;0.05). At d 4, 7, 14,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glutamine; Average body weight; Antioxidant function; Salmonella Enteritidis; Broiler.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400307

Effects of Glutamine on the Mucosal Structure and Immune Cells in the Intestines of Broiler Chickens Challenged with Salmonella Enteritidis
Provedor de dados: 89
Autores: Liu,Z; Wu,Q; Jiao,C; Cheng,B; Zhu,D; Ma,Y; Li,Y; Li,W.
ABSTRACT The aim of this study was to investigate the effects of glutamine (Gln) on the intestinal mucosal structure and immune cells of broilers infected with Salmonella Enteritidis. 160 1-d-old commercial Arbor Acres (AA) broilers were randomly selected to receive one of four treatments, each of which had 5 replicates. Each replicate consisted of 8 chicks subjected to a 21-d feeding trial. Group I served as the unchallenged (CON). All birds in groups II (SCC) - IV were challenged with 2.0 × 104 CFU/mL of S. Enteritidis. The birds in groups III and IV were treated with 0.5% and 1.0% Gln. The results showed that S. Enteritidis infection led to a decrease in the relative length and weight, villus height:crypt depth (VH:CD) of the jejunum and ileum, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glutamine; Intestinal villi; Mucosal immunity; Salmonella Enteritidis; Broiler.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300309

Effects of glycerol on the metabolism of broilers fed increasing glycerine levels
Provedor de dados: 89
Autores: Romano,GG; Menten,JFM; Freitas,LW; Lima,MB; Pereira,R; Zavarize,KC; Dias,CTS.
This study evaluated the metabolic response of broilers fed diets containing increasing crude glycerine levels in two bioassays. Birds were house in metabolic cages, and were distributed according to a completely randomized experimental design with five treatments of 4 replicates each (1st assay: 5 birds/ cage; 2nd assay: 1-20 days = 8 birds/ cage, and 21-42 days = 4 birds/cage). Treatments consisted of a control diet based on corn and soybean meal, and four other diets containing 2.5%, 5.0%, 7.5% and 10.0% glycerine derived from biodiesel. In experiment I, there was no effect (p&amp;gt;0.05) of glycerol level on liver weight or blood parameters. Serum blood glycerol levels of the birds fed 10% crude glycerine increased during the first nine days of diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Energy source; Nutrition; Feed.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100014

Effects of Glycyrrhizic Acid on Productive and Immune Parameters of Broilers
Provedor de dados: 89
Autores: Ocampo,CL; Gómez-Verduzco,G; Tapia-Perez,G; Gutierrez,OL; Sumano,LH.
ABSTRACT Considering that glycyrrhizic acid (GRA) has been shown to have in-vitro and in-vivo antiviral activity against a wide range of viruses as well as immunostimulating activity, a trial to evaluate its effects on the performance and the immune response against Newcastle disease of broiler chickens was carried out. The study was performed with one-day-old Ross x Ross broiler chickens. GRA was added to the drinking water throughout the 49-d production cycle at a dose of 0.03%. Sample size of the trial was established in a pilot assay. Results showed that broiler chickens treated with GRA presented better weight gain, final body weight, feed conversion ratio, and lower mortality rate than the non-treated controls. In addition, GRA-treated birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Growth promotion; Immune system; Glycyrrhizic acid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300435

EFFECTS OF GRADUAL FEED DILUTION WITH INERT OR LESS NUTRITIVE MATERIALS ON GROWTH PERFORMANCE, FEED COST AND MEAT ORGANOLEPTIC PROPERTIES OF BROILER CHICKEN
Provedor de dados: 89
Autores: Atapattu,NSBM; Silva,LMS.
ABSTRACT The objective of the present study was to determine the effects of the gradual dilution of broiler finisher diets with inert or less nutritive materials on growth performance, feed cost, and meat organoleptic properties. Broiler chicks (n=147) were allocated into 49 pens and fed a mash broiler finisher diet (control) or the control diet diluted either with cassava leaf meal (CLM), gliricidia leaf meal (GLM), grass meal (GM), rice bran (RB), sand (SND), or sawdust (SD). For a given diluent, six diets were prepared by mixing the control diet with the respective diluents (w/w) at 0% (fed from 27-28d),2% (fed from 29-30d), 4% (fed from 31-32d), 6% (fed from 33-34d), 8% (fed from 35-36d) and 10% (fed from 37-40d). SD, RB, GLM and GM significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Dilution; Feed; Performance; Phase.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300427

Effects of Guanidionoacetic Acid and Arginine Supplementation to Vegetable Diets Fed to Broiler Chickens Subjected to Heat Stress before Slaughter
Provedor de dados: 89
Autores: Esser,AFG; Gonçalves,DRM; Rorig,A; Cristo,AB; Perini,R; Fernandes,JIM.
ABSTRACT The objective of this study was to evaluate the supplementation of guanidinoacetic acid (GAA) and L-arginine (L-Arg) as creatine precursors to vegetable diets on the carcass yield and meat quality of broilers subjected to two days of heat stress before slaughter. A total of 1260 broiler chicks were distributed according to a completely randomized design into four treatments with nine replicates of 35 birds each. The treatments consisted of: T1 - vegetable diet based on corn and soybean meal (control diet); T2 - control diet with the inclusion of meat meal (3%); T3 - control diet supplemented with GAA (0.08%); and T4 - control diet supplemented with L-Arg (0.8%). The birds were submitted to heat stress for two days before slaughter (from 42 to 44...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abdominal fat; Creatine; Meat quality; Nitric oxide.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300429

Effects of Heat Stress on the Daily Behavior of Wenchang Chickens
Provedor de dados: 89
Autores: Li,M; Wu,J; Chen,Z.
ABSTRACT One-day old chicks were randomly distributed into acute heat stress (AHS) or persistent heat stress (PHS) groups. Each group was further divided into control (CK), and three AHS ages (1, 2,or 3 weeks of age) experimental subgroups. The chicks in AHS subgroups were submitted to acute heat stress (40oC for two hours between 12:00 and 14:00 hours during the weekend) and the effects of heat stress on several daily behaviors were observed. At 8 days of age, the chicks of PHS subgroups were submitted to heat stress (40oC daily). The heat treatment ceased during the weekends and the effects on the behavior were observed three times daily for three consecutive days. The results showed that, compared with the CK group, the duration and frequency of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat stress; Broiler behavior; Behavioral observations; Wenchang chicken.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400559

Effects of Heat Stress on the Development of GABAergic Neurons in the HPG Axis of Wenchang Chicks
Provedor de dados: 89
Autores: Liang,W; Lu,BB; Liang,C; Yu,ZQ; Xie,XZ; Chen,Z.
ABSTRACT This study conducted an in-depth investigation on the development of GABAergic neurons and their receptors in HPG axis-related target organs of Wenchang chicks under heat stress. One-day-old healthy Wenchang chicks were randomly divided into control (CK) and heat stress (HS) groups. Chicks in the HS group were placed in a 40±0.5°C climatic chamber for HS treatment from 13:00 to 15:00 daily. By immunohistochemistry and Western blotting, GABA and GABAA receptor (GABAAR) expression in the hypothalamus of the HS group was significantly higher (p&lt;0.05), but GABAB receptor (GABABR) expression was significantly lower than that of the CK group (p&lt;0.05). Expression of GABA and its two receptors in the pituitary tissues of the HS group was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat stress; GABAergic neurons; HPG axis; Wenchang chick.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200342

Effects of Hen Age and Egg Weight Class on the Hatchability of Free Range Indigenous Chicken Eggs
Provedor de dados: 89
Autores: Abudabos,AM; Aljumaah,RS; Algawaan,AS; Al-Sornokh,H; Al-Atiyat,RM.
ABSTRACT In total, 806 eggs of free-range Hassawi indigenous chickens were collected from local farm in Saudi Arabia. Eggs were weekly collected for 11 weeks. Initial egg weight (IEW) was recorded, and eggs were graded into four classes (A: 35-40 g, B: 40-45 g, C: 45-50 g, and D: 50-55 g). Eggs were stored for seven days at 75-80% relative humidity and 14-16 C, after which egg weight losses (WL0) were calculated. During incubation, eggs were weighed on days 7 (W7) and 14 (W14), and egg weight losses on days 7 (WL7) and 14 (WL14), and total loss (WL0-14) were calculated. Hatchling weight (CW) was measured. The proportion of CW relative to egg weight loss (WL) on days0, 7 and 14 days of incubation (CW:WL0; CW:WL7 and CW:WL14, respectively), and break out...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg weight; Embryo mortality; Hassawi chicken; Hatchability; Hen age.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100033

Effects of in Ovo Infusion of Probiotic Strains on Performance Parameters, Jejunal Bacterial Population and Mucin Gene Expression in Broiler Chicken
Provedor de dados: 89
Autores: Majidi-Mosleh,A; Sadeghi,AA; Mousavi,SN; Chamani,M; Zarei,A.
ABSTRACT The objective of the present study was to evaluate the effects of in ovo infusion of probiotic strains (Bacillus subtilis, Enterococcus faecium, and Pediococcus acidilactici ) on jejunal microbial population and mucin gene expression in broiler chicken. In a completely randomized design, 0.5 ml of mediums containing 107 cfu of different probiotic strains, was administered into amniotic fluid of the 480 Cobb fetus (day 18 of incubation), with four treatments, five replicates with twenty four eggs each. For mucin gene expression, samples from the jejunum were taken on day 21 of incubation and day 3 post-hatch. Microbial profile was determined for total lactobacillus and E. coli by sampling jejunal contents on days 1 and 3 of age. Expression of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In ovo infusion; Jejunum; Microbial population; QPCR; Probiotic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500097

Effects of Incubator Carbon Dioxide and Oxygen Levels, and Egg Weight on Broilers’ Hatchability of Fertile Eggs
Provedor de dados: 89
Autores: Okur,N.
ABSTRACT This study investigated the effects of incubator carbon dioxide (CO2) and oxygen (O2) levels, and egg weight (EW) on embryo mortality (EM) and hatchability of fertile eggs (HFE). A total of 1920 hatching eggs were obtained from a middle-aged (41 weeks) ROSS 308 broiler breeder flock. The eggs were classified according to EW as heavy (69.63 ± 0.09 g), medium (65.20 ± 0.04 g) and light (61.11 ± 0.08 g) and randomly allocated to four separate identical incubators. To these incubators, four different incubator ventilation programmes (IVP) classified as control (C; 0.7% CO2 and 20.9% O2), high CO2 (HC; 1.1% CO2 and 20.3% O2), high O2 (HO; 0.6% CO2 and 22.0% O2), and high CO2 + O2 (HCO; 0.9% CO2 21.0% O2) were applied, and EM and HFE were examined. IVP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Carbon dioxide; Egg weight; Incubation; Oxygen.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300310

Effects of initial body weight and litter material on broiler production
Provedor de dados: 89
Autores: Mendes,AS; Paixão,SJ; Restelatto,R; Reffatti,R; Possenti,JC; Moura,DJ de; Morello,GMZ; Carvalho,TMR de.
This experiment was carried out in a 104 m² poultry house located between the geographical coordinates 25°45'00" south latitude and 53°03'25" west longitude and an average altitude of 550 m, from September to November, 2008. The chickens were placed in 12 pens measuring 2 m² each at a stocking density of 12 chickens m-2. This study aimed at evaluating the effect of two different initial weights (chick weight on first day of experiment) and two types of litter material on broiler production parameters, litter humidity, as well as on breast and footpad lesions. A total of 240 female Cobb® chickens, derived from the same flock of breeders, was distributed in a completely randomized experimental design with a 2 (initial weight) by 2 (litter material) factorial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast lesions; Footpad lesion; Sawdust; Wood shavings.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300001

Effects of In-Ovo Rutin Injection to Fertile Japanese Quail (Coturnix Coturnix Japonica) Egg on Hatchability, Embryonic Death, Hatchling Weight, and Hatchling Liver Oxidative and Nitrosative Stress
Provedor de dados: 89
Autores: Genc,M; Kandemir,FM; Coban,O.
ABSTRACT This study was conducted with the aim of investigating the effects of the antioxidant rutin injected in fertilized quail eggs on incubation parameters and some hatchling liver biochemical parameters. The study was carried out with 6 groups including a control group and 5 different doses of rutin, and it involved 720 fresh Japanese quail (Coturnix coturnix japonica) eggs. It was observed that rutin dose did not affect the early embryo mortality, whereas intermediate and late embryo mortality rates were higher in all groups given rutin in comparison to the control group. The mean hatchability of fertile eggs and total eggs for the control, 0.25 mg, 0.50 mg, 0.75 mg, 1 mg and 1.5 mg groups were calculated as 82.06, 82.23, 64.43, 68.84, 44.08, 22.95 %...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hatchability; In-ovo injection; Oxidative stress; Nitrosative stress; Rutin.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100329

Effects of inverting the position of layers eggs during storage on hatchery performance parameters
Provedor de dados: 89
Autores: Lima,JCS de; Silva,PL; Coelho,LR; Borges,MS; Freitas,AG de; Fonseca,BB.
Storing hatchable eggs is a common practice in commercial hatcheries. However, storage time may negative effects on several performance parameters. An experiment was carried out to evaluate inverting egg position during storage of eggs laid by young and old layer breeders. Fertile eggs of 32 and 58-week-old breeders were stored for seven, 14, and 21 days at 18ºC ± 2ºC and 80% ± 10% relative humidity (RU). The following parameters were evaluated: egg weight loss, hatchability and hatchling weight, and embryodiagnosis results. Eggs stored with the small end up lost less weight during storage compared with the control eggs. Storing eggs for 14 days with the small end up reduced early embryo mortality, improving hatchability. In addition, hatchling weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Storage; Layer breeders; Hatchling weight; Egg position; Hatchery performance.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400003

Effects of Kluyveromyces marxianus Isolated from Tibetan Mushrooms on the Plasma Lipids, Egg Cholesterol Level, Egg Quality and Intestinal Health of Laying Hens
Provedor de dados: 89
Autores: Zhong,S; Liu,H; Zhang,H; Han,T; Jia,H; Xie,Y.
ABSTRACT The effects of the Kluyveromyces marxianus M3 strain, isolated from Tibetan mushrooms, on plasma lipids, egg cholesterol level, egg quality, and intestinal health of laying hens were evaluated. In total, 160 Beijing fatty laying hens (43 weeks old) were divided into four groups and fed a basal diet supplemented with 0%, 0.1%, 0.3%, or 0.5% freeze-dried K. marxianus M3 powder for four weeks. The results showed that yeast supplementation reduced serum total cholesterol (TC), triglyceride (TG), low density lipoprotein-cholesterol (LDL-C), and very low density lipoprotein-cholesterol (VLDL-C) levels (p&lt;0.01), and increased serum high density lipoprotein-cholesterol (HDL-C) level (p&lt;0.05). Moreover, regardless of K. marxianus M3 dietary addition...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood parameters; Cholesterol; Egg production; Poultry nutrition; Serum.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200261

Effects of labor motivation in poultry production
Provedor de dados: 89
Autores: Alencar,M do CB de; Nääs,IA; Gontijo,LA; Salgado,DA.
Broiler production is a significant economic activity in Brazil, and employs a large number of stockpeople in the integration process. Considering that the stockperson's perception may lead to better performance of his/her tasks and flock handling, this study aimed at verifying possible interactions between poultry productivity and stockperson's perception, emotions, and motivation. The study methodology considered two aspects: qualitative analysis, using Ergonomic Work Analysis, with observational method, and by applying a questionnaire and interview, and classification of the answers into positive relationship and "affection" to the job or negative relationship and "disaffection" to the job; and quantitative analysis, applying the Test of Hypothesis for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ergonomics; Labor motivation; Poultry production.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400007

Effects of Lactobacillus Probiotic, P22 Bacteriophage and Salmonella Typhimurium on the Heterophilic Burst Activity of Broiler Chickens
Provedor de dados: 89
Autores: Marietto-Gonçalves,GA; SMR,Curotto; Baptista,AAS; Donato,TC; Takahira,RK; Sequeira,JL; Andreatti Filho,RL.
Due to the constant evolution of industrial poultry production and the global emergence of bacterial resistance to antibiotics there has been an increasing interest in alternatives for the treatment of poultry salmonellosis, such as phage therapy and probiotics. The present study evaluated the effects of the oral administration of the bacteriophage P22 and of a probiotic, consisting of four Lactobacillus species, on the level of circulating heterophils containing a superoxide anion of one-day-old broilers challenged with Salmonella Typhimurium for seven days. It was concluded that the treatment with a probiotic with lactobacilli of broilers experimentally infected with Salmonella spp eliminates this pathogen by increasing the circulating levels of reactive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonellosis; Immune response; Respiratory burst; Poultry.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300005

Effects of Lactobacillus Reuteri E81 Added into Rations of Chukar Partridges (Alectoris Chukar) Fed Under Heat Stress Conditions on Fattening Performance and Meat Quality
Provedor de dados: 89
Autores: Tekce,E; Bayraktar,B; Aksakal,V; Dertli,E; Kamiloğlu,A; Çinar,K; Takma,Ç; Kaya,H; Gül,M.
ABSTRACT This study investigated the effects of the addition of Lactobacillus reuteri E81 (LRE) into rations of chukar partridges (Alectoris chukar) fed under heat stress (HS) conditions on fattening performance and meat quality. This study included 256 chukar partridges aged 1 day. The study comprised an adaptation period of 7 days and a fattening period of 35 days and included 8 different groups with 32 animals in each group. Each group was further divided into four subgroups with eight animals in each subgroup. At the end of the study, the best results in terms of fattening performance in the non-HS groups were obtained in the LRE 600 ppm group and in the HS groups, SLRE 200 ppm had the best effect on average live weight and average live weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chukar partridges (Alectoris chukar); Probiotic; Performance; Meat Quality; Lactobacillus reuteri E81.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200300

Effects of Laser Beak Trimming on the Development of Brown Layer Pullets
Provedor de dados: 89
Autores: Petrolli,TG; Petrolli,OJ; Girardini,LK; Zotti,MLAN; Baggio,RA; Junqueira,OM.
ABSTRACT Laser beak trimming is a promising alternative to conventional hot-blade beak trimming as it is less painful and provides better beak uniformity and better animal welfare. In this study, laser vs. hot-blade beak trimming were compared in 400 Hy-line Brown pullets between 2-16 weeks of age. At 7 days of age, birds were distributed according to a completely randomized design into two treatments, with 10 replicates (pens) of 20 birds each. Birds and feed offer and residues were weekly weighed to determine weight gain, feed intake, and feed conversion ratio. In weeks 4, 8, 12, and 16 weeks, one bird per experimental unit was sacrificed to measure the development of the heart development, liver, proventriculus, gizzard, small intestine, and bursa. And...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Layers; Organs; Oviduct.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100123

Effects of levamisole hydrochloride on cellular immune response and flock performance of commercial broilers
Provedor de dados: 89
Autores: Oladele,OA; Emikpe,BO; Adeyefa,CAO; Enibe,F.
Levamisole hydrochloride (Lev.HCl) has been acclaimed to boost immune response particularly in immunocompromised state. Its routine use as an immunomodulator in poultry production is yet to be well embraced, thus its effects of on cellular immunity and flock performance of commercial broilers were evaluated. One hundred and fifty Anak broiler chicks were separated into two groups of 75 each. Broilers in group 1 were sensitized with 150µg of Staphylococcus aureus antigen each at 4 and 5 weeks, while those in group 2 were not sensitized. Each group was further divided into subgroups A, B, and C. Levamisole hydrochloride (40 mg/kg) was administered orally to 1A and 2A at 45 and 46 days of age and to 1B and 2B at 47 and 48 days of age, while 1C and 2C were not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Cellular immunity; Delayed wattle reaction; Immunocompromised; Levamisole hydrochloride.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400005

Effects of Light Intensity on Growth, Anti-Stress Ability and Immune Function in Yellow Feathered Broilers
Provedor de dados: 89
Autores: Guo,YL; Ma,SM; Du,JJ; Chen,JL.
ABSTRACT An experiment was conducted to investigate the effects of light intensity on growth, anti-stress ability, and immune function of yellow feathered broilers. A total of 480 one-day-old male Lingnan yellow feathered broilers were randomly allocated to 4 treatments based on light intensity (1, 5, 20 and 80 lx) with 8 replicates of 15 chicks each. The experiment lasted for 63 days. Compared with those under high light intensity, broilers exposed to low light intensity had higher (p&lt;0.05) total antioxidant capacity (T-AOC), glutathione peroxidase (GSH-Px), a-Naphthylacetate esterase (ANAE+), antibody titer, but lower (p&lt;0.05) malonaldehyde (MDA) levels and heterophil/lymphocyte ratio (H/L). There was a linear effect for T-AOC(p=0.002),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-stress ability; Growth; Immune function; Light intensity; Yellow feathered broilers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100079

Effects of lysine levels of diets formulated based on total or digestible amino acids on broiler carcass composition
Provedor de dados: 89
Autores: Nasr,J; Kheiri,F.
The study was conducted to evaluate carcass yield and chemical composition of thigh and breast muscles of broilers fed three different lysine requirement levels: high lysine (+10% NRC), standard (NRC) and low lysine (-10% NRC) and two ways of expressing amino acids in feedstuffs (total or digestible amino acids). The results of this study showed that diet formulation based on digestible amino acids significantly influenced breast yield and abdominal fat deposition. The study showed that increasing lysine level (+10% NRC) of diet significantly increased both carcass and breast percentage and also carcass, breast and thigh weight. The interaction between digestible amino acids and lysine requirement levels affected carcass and breast percentage. Feeding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Carcass; Digestible; Lysine; Requirements.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400004

Effects of Lysophospholipid and Lipase Enzyme Supplementation to Low Metabolizable Energy Diets on Growth Performance, Intestinal Morphology and Microbial Population and Some Blood Metabolites in Broiler Chickens
Provedor de dados: 89
Autores: Movagharnejad,M; Kazemi-Fard,M; Rezaei,M; Teimuri-Yansari,A.
ABSTRACT This experiment aimed to evaluate the impacts of dietary lysophospholipid (LPL) and lipase enzyme complementation based on low-energy diets on growth performance, intestinal morphology, blood metabolites, immune response, and carcass traits in broiler chickens. Two hundreds broiler chicks were assigned to a completely randomized design with five treatments and four replications with ten one-day old chicks. The five treatments were: positive control (PC) without LPL supplementation and adequate in all nutrients, negative control (NC) without LPL the reduced 150 kcal/kg of metabolizable energy, NC+ 0.15% LPL (LPL15), NC+ lipase (NCL), NC+ 0.15% LPL+ lipase (NCLL). Feeding LPL improved body weight gain and feed conversion ratio (FCR). In contrast,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler Chicken; Lipase; Metabolizable Energy; Growth Performance; Intestinal Morphology.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200316

Effects of Medicinal Plants Extract with Antibiotic Free Diets on Broilers Growth Performance and Incidence of Muscles Abnormalities
Provedor de dados: 89
Autores: Mudalal,S; Zaazaa,A; Omar,J Abo.
ABSTRACT The objective of this research was to investigate the effects of a natural herb extract1 (HE) on the general growth performance and the incidence of muscle abnormalities (white striping and wooden) of broiler chicks. A total of 504 one-day old chicks (Ross 500) were used in the experiment and randomly partitioned into 3 treatments with 7 replicates in each (24 chicks per replicate). Three experimental diets (C: regular feed; T1 and T2 (supplemented with HE at levels of 0.20 and 0.30 ml/L, respectively). The herbal extract was supplemented in drinking water. Feed intake, body weight and feed conversion ratio were monitored at days 14, 28 and 42 of the feeding trial. Moreover, the yield of visceral organs, carcass cuts, and the incidence of muscle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Herb extract; Performance; White stripping; Wooden meat.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100305

Effects of methionine and arginine dietary levels on the immunity of broiler chickens submitted to immunological stimuli
Provedor de dados: 89
Autores: Rubin,LL; Canal,CW; Ribeiro,ALM; Kessler,A; Silva,I; Trevizan,L; Viola,T; Raber,M; Gonçalves,TA; Krás,R.
The present study aimed at assessing the effects of methionine and arginine on the immune response of broiler chickens submitted to immunological stimuli. Three methionine concentrations (0.31, 0.51, and 0.66% from 1 to 21 days of age; 0.29, 0.49, and 0.64% from 22 to 42 days of age) and 2 arginine concentrations (1.33 and 1.83%; 1.14 and 1.64% for the same life periods) were tested. Birds were divided into two groups for immunological stimuli (3x2x2 arrangement). Vaccines against Marek's disease, fowl pox, infectious bronchitis, Freund's Complete Adjuvant, Sheep red blood cells (SRBC), and avian tuberculin were administered to one group as immunological stimuli; the other group did not receive any stimulus. The experiment was carried out with 432...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Birds; Immune system; Vaccines.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400006

Effects of Methionine Deficiency on the B Lymphocyte and Immunoglobulins of Cecal Tonsil in Cobb Broilers
Provedor de dados: 89
Autores: Zhu,M; Ruan,T; Zeng,Q; Wu,B.
ABSTRACT The present study was conducted on one-day-old broilers to investigate the effects of methionine deficiency on B lymphocytes and immunoglobulins (sIgA, IgA, IgG, IgM) in the cecal tonsil of Cobb broiler chicken. Methods including immunohistochemistry (IHC), western blot (WB), quantitative real-time reverse transcriptase-polymerase chain reaction (qRT-PCR) and Enzyme-Linked Immuno Sorbent Assay (ELISA) were used, and the study lasted for 6 weeks. It was found that the IgA+ B lymphocytes mainly existed in the diffuse lymphoid tissues and lymphoid follicles of the cecal tonsil. The data indicated that the number of IgA+ B lymphocytes was decreased in the methionine deficiency group, and the WB and qRT-PCR results suggested that the protein and mRNA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: B lymphocyte; Cecal tonsil; Immunoglobulins; Methionine deficiency.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400319

Effects of methionine source, arginine: lysine ratio and sodium chloride level in the diets of grower broilers reared under high-temperature conditions
Provedor de dados: 89
Autores: Montanhini Neto,R; Ceccantini,ML; Fernandes,JIM.
The objective of this study was to evaluate the influence of methionine sources (DL-methionine 99% powder (DLM) or methionine hydroxy analog liquid 88% (HMTBA)), arginine:lysine (Arg:Lys) ratio and sodium chloride (NaCl) content in the diet of broilers on their performance, carcass yield, serum biochemistry, duodenal mucosal morphology, and immune response. Birds were kept under high temperature conditions during the grower phase and were inoculated or not with an antigen. The use of HMTBA promoted better live performance and carcass yield than the use of DLM. Diets with 1.05 Arg:Lys ratio resulted in better live performance, higher carcass and breast meat yields, longer villi, shallower crypts, and stronger immune response when broilers were challenged...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DL-methionine; Methionine hydroxy analog; Intestinal morphology; Immunity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200012

Effects of Non-phytate Phosphorus and 1a-Hydroxycholecalciferol on Growth Performance, Bone Mineralization, and Carcass Traits of Broiler Chickens
Provedor de dados: 89
Autores: Han,JC; Ma,K; Wang,JG; Chen,GH; Zhang,JL; Qu,HX; Yan,YF; Cheng,YH.
ABSTRACT This study evaluated the effects of dietary non-phytate phosphorus (NPP) and 1a-hydroxycholecalciferol (1a-OH-D3) on the growth performance, bone mineralization, and carcass traits of 1- to 21-day-old broiler chickens. On the day of hatch, 600 male Ross 308 chicks were weighed and randomly assigned to 12 treatments, with five cages of 10 birds each. A 6 × 2 factorial arrangement was applied, consisting of 0.20%, 0.25%, 0.30%, 0.35%, 0.40%, or 0.45% NPP and 0 or 5 μg/kg of 1a-OH-D3. The basal diet contained 0.52% calcium (Ca) and was not supplemented with vitamin D3. Dietary NPP levels significantly affected growth performance and tibia mineralization (except width) of broilers; by contrast, meat yield and organ relative weight were not influenced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Non-phytate phosphorus; 1a-hydroxycholecalciferol; Growth; Bone; Broiler chicken.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400503

Effects of Nutrient Density and exogenous enzymesin Starter Diet on Performance, Intestinal Microflora, Gut Morphology and Immune Response of Broiler Chickens
Provedor de dados: 89
Autores: Nabizadeh,A; Golian,A; Hassanabadi,A; Zerehdaran,S.
ABSTRACT A total of 810 one-day-old, straight-run broilers were used to evaluate the effects of dietary nutrient density and feed additives included in the starter diet on their performance, intestinal microbiota, gut morphology, and immune response. A 3×3 factorial arrangement with three nutrient densities (100, 103.75 and 107.5%, as recommended) and three feed additives (no additives, 0.5 g/kg diet Maxi-Gen, and Maxi-Gen + Superzyme + Bio-Phytase at the rate of 0.5, 0.25 and 0.1 g/kg diet, respectively), fed from 1 to 10 d of age. Similar commercial corn-soy grower and finisher diets fed to all birds from 10-24 and 24-42 d of age, respectively. There was higher (p&lt;0.05) body weight gain and lower (p&lt;0.05) feed conversion ratio in chicks fed starter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid density; Intestinal morphology; Microbiota; Growth performance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300509

Effects of Nutritional Levels on Performance, Carcass Characteristics and Nutrient Digestibility of Sexed Broilers
Provedor de dados: 89
Autores: Muñoz,JA; Suckeveris,D; Demuner,LF; Saccomani,APO; Silva,AL; Silva,RT; Faria Filho,DE; Faria,DE.
ABSTRACT The objective of this study was to evaluate the effects of dietary nutrient levels on performance, carcass yield, commercial cuts, digestibility and economical viability of broilers from 1 to 42 days of age. During the experiment, 180 COBB 500™ chicks were housed in metal batteries and subjected to a completely randomized design in a 2x3 factorial arrangement, of two sexes and three diets (male, female and mixed), totaling 6 treatments and 6 repetitions of 5 birds each. Data were subjected to statistical analysis and the means were compared using the Tukey test, at 5% probability. The results indicate the effect of sex on performance and commercial cuts, except for breast and thigh fillets, in which males and females showed similar results when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Economic viability; Metabolizability; Nutrition; Nutritional requirement; Poultry.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100053

Effects of ochratoxin a on broiler leukocytes
Provedor de dados: 89
Autores: Moura,MA; Machado,CH; Porfírio,LC; Freire,RB.
This study evaluated alterations in the qualitative cellular profile of leukocytes caused by the administration of low doses of ochratoxin-A (OTA) in poultry. Sixty chicks were separated in three experimental groups: control, PBS-treated and OTA-treated. Blood smears from all birds were analyzed three and six hours post-treatment. Differential leukocyte counting demonstrated that OTA reduced the percentage of lymphocytes and eosinophils and significantly increased the number of heterophils and monocytes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Hematology; Mycotoxin; Ochratoxin A.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300010

Effects of Organic Acids Supplement on Performance, Egg Traits, Blood Serum Biochemical Parameters and Gut Microflora in Female Japanese Quail (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Fouladi,P; Ebrahimnezhad,Y; Shahryar,H Aghdam; Maheri,N; Ahmadzadeh,A.
ABSTRACT This study was conducted to evaluate the effects of acetic acid, lactic acid, and butyric acid on the production performance, egg parameters (quality and quantity traits), blood and liver serum biochemical parameters and gastrointestinal tract microorganism on female Japanese quails. A total of 640 female Japanese quails aged 35-84 days were housedfor eight treatments with four replicates. They were arranged in completely randomized design (CRD) to evaluate the effects of basal diet (BD) with a supplement of acetic acid (AA), lactic acid (LA) and butyric acid (BA). The performance parameters to study this effect are feed intake, feed conversion ratio, egg traits such as egg weight, egg production, and egg mass along with specific gravity, internal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochemical parameters; Egg trials; Gut microflora; Japanese quail; Organic acids.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100133

Effects of organic mineral dietary supplementation on production performance and egg quality of white layers
Provedor de dados: 89
Autores: Fernandes,JIM; Murakami,AE; Sakamoto,MI; Souza,LMG; Malaguido,A; Martins,EN.
This trial aimed at evaluating the effect of organic trace mineral supplementation of commercial layer diets on productive performance and egg quality. One-hundred-ninety-two Hy Line W36 white 69-w-old layers were distributed into a completely randomized design with three treatments, and eight replicates, with eight birds each. Treatments consisted of a basal diet supplemented with inorganic trace minerals (R1), and two others experimental diets containing 0.250 ppm (R2) and 0.500 ppm (R3) of an organic source of zinc, manganese, and selenium. Feed intake (g/bird/day), feed conversion ratio (kg/dozen egg and kg/kg egg), egg weight (g), egg production (%), thin and cracked eggshells (%), specific gravity (g/mL), Haugh Units, total egg solids (%), yolk...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Organic minerals; Productive performance.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100009

Effects of Origanum Syriacum Essential Oil on Blood Parameters of Broilers Reared at High Ambient Heat
Provedor de dados: 89
Autores: Tekce,E; Gül,M.
ABSTRACT The biochemical and hematological blood values of broilers fed under heat stress and that were administered Origanum syriacum (OS) essential oil were investigated in this study. In total, 400 male broilers (Ross-308; age, 1 day) were used for the period of 42-days of the study. The experiment included ten groups (n = 50/group; each group divided into five sub-groups): normal heat, 22°C: basal feed (BF)-positive control group (PC), BF + 100 ppm OS; BF + 300 ppm OS; BF + 600 ppm OS). Heat stress, 36°C: BF-positive control group (PC), BF + 100 ppm SOS; BF + 300 ppm OS; and BF + 600 ppm OS). Biochemical and hematological parameters were measured in blood collected into EDTA tubes. Total bilirubin, cholesterol, low-density cholesterol, Na+, Ca2+, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Origanum Syriacum essential oil; Biochemical and Hematological.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400655

Effects of Phytase Inclusion in Broiler Breeder Diets During Early Lay on their Fecal and Egg Characteristics
Provedor de dados: 89
Autores: Arguelles-Ramos,M; Nusairat,B; Qudsieh,R; Brake,J.
ABSTRACT This study investigated the effects of phytase inclusion in broiler breeder diets on fecal and egg characteristics. A total of 48 female broiler breeders were evaluated in this study from 21 to 31 weeks of age. The dietary treatments were fed from 30 to 31 wks of age, and included a Positive Control (PosCon) diet, containing 3.0% calcium and 0.50% available phosphorus (AvP); a Negative Control (NegCon) diet, with 3.0% calcium and 0.25% AvP; Negative Control diet + 275 FTU/kg phytase (NegCon+275), and Negative control diet + 550 FTU/kg phytase (NegCon+550). Egg, yolk, albumin, and eggshell weight, albumin height, and eggshell thickness were measured. Fecal parameters included fecal moisture, liquid portion, and mineral content. After 14 d on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Fecal minerals; Fecal moisture; Liquid portion; Phytase.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100304

Effects of Phytogenic Additives and Organic Acids, alone or in combination, on the Performance, Intestinal Quality and Immune Responses of Broiler Chickens
Provedor de dados: 89
Autores: Fascina,VB; Pasquali,GAM; Carvalho,FB; Muro,EM; Vercese,F; Aoyagi,MM; Pezzato,AC; Gonzales,E; Sartori,JR.
ABSTRACT The present study was conducted to evaluate the effects of phytogenic additives (PA) and organic acids (OA), alone or in combination, on the performance, intestinal histomorphometry and lipid oxidation, and immune responses of broiler chickens. In this experiment, 820 one-day-old chicks were distributed according to a completely randomized design in a 2 × 2 + 1 factorial arrangement, with four replicates of 41 broilers each. The dietary treatments consisted of a control diet with no PA or OA (CD); CD with OA and no PA (CD+OA-PA); CD with PA and no OA (CD+PA-CD); CDwith both PA and OA (CD+PA+CD); and CD + avilamycin + monesin sodium. Broiler performance was not affected by the alternative feed additives, except from 1 to 21 days, when broilers fed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidifier; Essential oil; Immunity; Intestinal histology; Plant extract.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300497

Effects of Plant Essential Oils on Vitamin C, Malondialdehyde and Some Biochemical Parameters of Rats*
Provedor de dados: 89
Autores: Göze,I; Erşan,S; Aydin,H; Ercan,N; Dönmez,E.
ABSTRACT The aim of this study was to determine the LD30 values of the essential oils of Origanum minutiflorum He Schwarz-PH Davis (OM) and Juniperus excelca by Bieb.subsp. Excel (JE) in vivo investigation on the effects of malondialdehyde (MDA), vitamin C and some biochemical parameters. In this, study the essential oils of OM and JE plants were used. LD50 values of the essential oils were determined by using rats. OM (n=10), JE (n=10), carvacrol (n=10) which dissolve in olive oil were used as experimental group and as control group saline (SF) (n=8) and solvent Olive oil (n=10) were used and applied intraperitoneal on rats for 12 days in LD30 dosages. In the end of 12 days, Vit-C, malondialdehyde (MDA) and routine biochemical analyses were studied on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Origanumminutiflorum O Schwarz-PH Davis; Juniperusexcelca Bieb.subsp.excelca; Essential oil; Vitamin C; Malondialdehyde; Enzyme.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200306

Effects of prebiotics and probiotics on the colonization and immune response of broiler chickens challenged with Salmonella Enteritidis
Provedor de dados: 89
Autores: Ribeiro,AML; Vogt,LK; Canal,CW; Cardoso,MRI; Labres,RV; Streck,AF; Bessa,MC.
The present study aimed at evaluating the effect of the prebiotic Bio Mos™ (2 kg/ton up to 10 days; 1 kg/ton from 10 to 21 days; and 0.5 kg/ton from 21 days to slaughter), of the probiotic Lac XCL 5x™ (by spray-mixing), of a combination of the two supplements (prebiotic + probiotic), and of one growth promoter antimicrobial agent (Avilamycin at 15 ppm). Birds were orally challenged with inoculated Salmonella Enteritidis (SE) 10(6) CFU at 3 days of age. Four hundred and eighty male Ross chicks were used. The experiment lasted 28 days, and the analyses were conducted at 15 and 28 days of age. Cecum and liver bacterial colonization of production of anti-SE antibiodies, intestinal micrometry and bird performance were assessed. Neither the prebiotic, nor the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Birds; Immunity; Salmonellosis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300009

Effects of pre-slaughter fasting on broiler welfare, meat quality, and intestinal integrity
Provedor de dados: 89
Autores: Pereira,REP; Martins,MRFB; Mendes,AA; Almeida,PAZ ICL; Komiyama,CM; Milbradt,EL; Fernandes,BC da S.
The Brazilian Ministry of Agriculture (MAPA) regulations establish 12 hours as the maximum pre-slaughter fasting period for broilers; however, many processing plants have considered this time is not sufficient, and consequently return the birds to the farms, with consequent economic losses and welfare problems. Therefore, it is necessary to investigate the possible effects of longer pre-slaughter fasting times. The objective of the present study was to evaluate the effect of pre-slaughter fasting times longer than those established by MAPA on broiler welfare, breast meat quality, and intestinal integrity. Forty 42-d-old broilers were submitted to different pre-slaughter fasting times: group I: 6 hours, group II 9h, group III 12h, and group IV 15h. Bird...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler industry; Stress; Intestinal morphology; Intestinal morphometrics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200007

Effects of Protein in Diet and Sex Ratio on Egg Production, Egg and Hatching Chick Weight, Fertility, Hatchability and Embryonal Mortality in Pheasants (Phasianus Colchicus)
Provedor de dados: 89
Autores: Uğurlu,M; Akdağ,F; Teke,B; Salman,M.
ABSTRACT This study was performed to investigate the effects of crude protein (CP) in diet and sex ratio on egg production, egg and hatching chick weight and hatchability traits in pheasants (Phasianus Colchicus). In this study, the treatment groups were constructed as 15% CP-5:1; 15% CP-7:1; 18% CP-5:1; 18% CP-7:1 for CP and sex (male:female) ratio respectively. The eggs were obtained from 48 weeks old pheasant. In this study, it was determined that there was positive effective on egg production, egg and hatching weight and hatchability of fertile eggs (HFE) for 18% CP. In contrast, fertility (FR) (p&lt;0.05) and hatchability rate of total eggs (HR) (p&gt;0.05), EPEM (p&gt;0.05) and MPEM (p&gt;0.05) tended to decrease with increasing CP. It was found that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryonal mortality; Hatchability; Pheasant; Protein levels; Sex ratio.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200231

Effects of sorghum on broilers gastrointestinal tract
Provedor de dados: 89
Autores: Silva,MCA; ACXG,Carolino; Litz,FH; Fagundes,NS; Fernandes,E de A; Mendonça,GA.
This study aimed at evaluating the effects of whole and ground sorghum, compared with ground corn, on the live weight, feed conversion ratio, organs weight and intestinal biometrics and histomorphometrics. In total, 960 Hubbard Flex broilers were reared until 42-day-old and distributed into 24 pens, according to the three treatments: ground corn, whole-grain sorghum, and ground sorghum. On day 42, five male birds per treatment were selected by similar body weight and sacrificed. Gizzard absolute weight, and proventriculus, liver, pancreas and heart relative weights, and duodenum, jejunum, ileum, ceca, and colon length and relative weight were determined. Villus characteristics and intestinal mucosa absorption surface area were evaluated. Broilers fed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Intestine; Nutrition; Organs.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100095

Effects of Storage Period, Marketing Channels and Season on Internal and External Quality of Commercial Table Eggs Marketed in Riyadh City (Saudi Arabia)
Provedor de dados: 89
Autores: Alshaikhi,AM; Abdullatif,AA; Badwi,MA; Alsobayel,AA.
ABSTRACT Very sparse information is available regarding quality of commercial Table eggs marketed in Riyadh city. The objective of the current study was to evaluate egg quality by determining the internal and external traits of commercial Table eggs marketed in different marketing channels during the summer and winter. Commercial eggs (n = 1440) were bought from four different supermarkets and groceries during the winter and summer season 2018- 2019. A total of 30 eggs were collected monthly from each marketing channel in the winter and summer. Then, individually numbered, weighed and randomly broken down into three empirical groups and stored for 0, 7 or 14 days. The outcomes show that seven and fourteen days of storage led to significant decrease in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commercial Table eggs; Egg quality; Marketing channels; Season; Storage period.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100314

Effects of Supplementation of Ionized or Chelated Water-Soluble Mineral Mixture on the Live Performance, Nutrient Digestibility, Blood Profile, Egg Quality, and Excreta Microbiota of Laying Hens
Provedor de dados: 89
Autores: Upadhaya,SD; Lee,BR; Park,JW; Kim,IH.
ABSTRACT In total, 216 Hy-Line brown laying hens (40-week-old), were used in a 5-week experiment to evaluate the effects of ionized or chelated water-soluble mineral mixture supplementation on live performance, nutrient digestibility, blood characteristics, egg quality, and excreta microbiota. Layers were randomly assigned to one of three dietary treatments with 12 replicates of six adjacent cages each. The dietary treatments consisted of: 1) CON (basal diet + normal tap water), 2) T1 (CON+0.5% ionized mineral mixture in tap water, pH 3.0); and 3) T2 (CON+ 0.5% chelated mineral mixture in tap water, pH 3.0). Egg production tended to increase in week 1, week 3 and week 4 in the birds supplemented with T1 and T2 diet compared with CON. Moreover, the dietary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ionized mineral mixture; Laying hen; Chelated mineral mixture.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200239

Effects of Supplemented Growth Promoters on Performance and Intestinal Morphology in Broilers Reared under Different Stocking Densities
Provedor de dados: 89
Autores: Altaf,MT; Mahmud,A; Mehmood,S; Saima,.
ABSTRACT The aim of the present study was to investigate the influence of different growth promoters on broiler performance and intestinal morphology reared under various stocking densities. A total of 900 day old (Ross-308) straight run broilers were randomly divided into fifteen treatment groups according to a completely randomized design. A 5 × 3 factorial arrangement of treatment was employed. Treatments were consisted of four growth promoters (antibiotics, prebiotics, probiotics, and symbiotics) and a control group with three stocking densities (0.046, 0.056, 0.065m2). Each treatment was replicated 6 times with 10 birds in each. Regarding growth performance, feed intake (p=0.0008), body weight (p=0.0085) and feed conversion ratio (p=0.0001) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler growth promoters stocking density; Growth performance; Intestinal histology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400306

Effects of the Addition of Glucose, Sodium Bicarbonate, and Vitamin E to the Drinking Water of Pre-Slaughter Broiler Chickens on Carcass Yield, Gastric Emptying and Meat Quality
Provedor de dados: 89
Autores: Petrolli,TG; Junqueira,OM; Domingues,CHF; Pereira,ASC; Santos,ET; Rocha,RX.
ABSTRACT An experiment was conducted of the poultry facilities of La Salle Agricultural College in Xanxerê, SC, Brazil, to evaluate the effect of the administration of sodium bicarbonate, glucose and vitamin E to the drinking water during pre-slaughter feed withdrawal on carcass yield, organ relative weights (heart, liver, proventriculus, and gizzard), gizzard emptying, and meat quality of broiler chickens. The applied treatments were: water as control; 50g/L of glucose; 50g/L de glucose + 200mg/L of vitamin E; 75g/L of glucose; 75g/L + 200mg/L of vitamin E; 0.45% of sodium bicarbonate; 0.45% of sodium bicarbonate + 200mg/L of vitamin E; 0.55% of sodium bicarbonate; 0.55% of sodium bicarbonate + 200mg/L of vitamin E; 200mg/L de vitamin E. On the last day...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler slaughter; Poultry farming; Pre-slaughter feed withdrawal; Tocopherol.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100029

Effects of the Addition of Pure Glycerin Supplementation in the Drinking Water on the Performance of Broilers Submitted to Heat Stress and Feed Restriction
Provedor de dados: 89
Autores: Moraes,PO; Ceron,MS; Borille,R; Gianluppi,RDF; Lovato,GD; Cardinal,KM; Ribeiro,AML.
ABSTRACT The experiment was conducted to study the effect of pure glycerin supplementation (GLYC) in the drinking water of broilers subjected to heat stress and feed restriction. Water with 0, 1, or 2% glycerin was provided ad libitum to broilers in six hours of feed restriction. The birds were housed in two environments: thermoneutral (TN) - 25 ° C, and cyclic heat stress (HS) - 12h with 250C, 6h with 320C, 3h of 250 to 320C and 3h of 320 to 250C. The experimental design was randomized in a factorial arrangement of 2 x 3 + 2, with three GLYC levels, two environments and one control group with ad libitum feeding each environment. When submitted to HS, broiler receiving 2% glycerin presented higher weight gain (WG), water consumption (WC), feed intake (FI)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental temperature; Feed restriction; Glycerol; Performance; Water consumption.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300413

EFFECTS OF THE COMBINATION OF NON-PHYTATE PHOSPHORUS, PHYTASE AND 25-HYDROXYCHOLECALCIFEROL ON THE PERFORMANCE AND MEAT QUALITY OF BROILER CHICKENS
Provedor de dados: 89
Autores: Ren,L; Zuo,J; Li,G; Zheng,L; Zhang,Z; Ye,H; Xia W,I; Feng,D.
ABSTRACTThis experiment was conducted to evaluate the combination effect of low dietary non-phytate phosphorus (NPP) concentrations, phytase (PHY) levels, and 25-hydroxycholecalciferol (25-OH-D3) levels on the growth performance and meat quality of broilers. Two levels of NPP, two levels of PHY, and two levels of 25-OH-D3 resulted in a 2�2�2 factorial arrangements, with eight treatments (TRT). The birds on TRT 1-4 were fed diet 1 (NRC NPP was reduced by 0.1) and the birds on TRT 5-8 were fed with diet 2 (NRC NPP was reduced by 0.2). Each diet was mixed with different levels PHY and 25-OH-D3. Performance and meat quality parameters were measured. Results showed that during entire experiment the most advantageous effects were obtained with TRT 3 (NRC NPP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Non-phytate phosphorus; Performance; Phytase; 25-hydroxycholecalciferol.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300371

Effects of the Dietary Inclusion of a Probiotic, a Prebiotic or their Combinations on the Growth Performance of Broiler Chickens
Provedor de dados: 89
Autores: Murshed,MA; Abudabos,AM.
ABSTRACT A total of 350-one-day old chicks were placed in 70 cages, with 14 cages per treatment. The following five treatment diets were fed for 14 days: T1 = non-supplemented, control diet (CONT); T2 = diet with antimicrobial growth promoter (AGP); T3 = diet with a probiotic (PROB); T4 = diet with a prebiotic(PREB), and T5 = diet with the probiotic and the prebiotic (SYM). The growth experiment was carried out from 1 to 14 days of age. Feed and water were provided ad libitum and birds were maintained at 24-h light schedule. Diets were formulated to contain 3000 kcalME/kg and 21.5% crude protein, and the test materials were added on top. The cumulative results of1 to 14 days of age revealed that broiler fed the AGP and PREB diets presented the highest BWG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial growth promoters (AGP); Probiotic; Prebiotic; Symbiotic; Broiler performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000099

Effects of the Dietary Inclusion of Xylanase on the Performance and Jejunum Morphometry of Meat-Type Quails
Provedor de dados: 89
Autores: Grecco,ET; Marcato,SM; Oliveira,TMM; Stanquevis,CE; Grieser,DO; Perine,TP; Finco,EM; Benites,MI.
ABSTRACT The objective of this study was to evaluate the effects of the supplementation of two xylanase products to diets with reduced metabolizable energy fed to meat-type quails during the starter phase (1-14 days). A completely randomized experimental design in a 2 x 3 + 1 factorial arrangement two reduced metabolizable energy (ME) diets, inclusion or not of xylanase, and a control diet with no enzyme addition) was applied, totaling seven treatments with five replicates of 45 quails each. At 14 days of age, jejunum segments were collected for morphometry evaluation. No interaction between the studied factors were detected for performance and jejunal morphometry parameters. Body weight, weight gain, feed intake and feed conversion were not influenced by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrases; Energy; Enzymes; Intestine; Quail production.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400313

Effects of The Dietary Supplementation of Layer Diets with Natural and Synthetic Antioxidant Additives on Yolk Lipid Peroxidation and Fatty Acid Composition of Eggs Stored at Different Temperatures and Duration
Provedor de dados: 89
Autores: Cimrin,T; Avsaroglu,MD; Tunca,R Ivgin; Kandir,S; Ayasan,T.
ABSTRACT In this study, the effects of the supplementation of natural and synthetic antioxidant additives in layer diets on egg weight loss, yolk lipid peroxidation (TBARS values) and fatty acid composition of eggs stored at different temperatures and duration were evaluated. In total, 112 48- weeks-old Bovans White layers were randomly allotted to four dietary treatments with four replicates of seven birds each. The treatments consisted of a control diet, containing no additives, and diets with the inclusion of 200 mg synthetic vitamin E/kg, 1000 mg thyme extract/kg and 1000 mg rosemary extract/kg. Dietary treatments did not influence (p&gt;0.05) relative weight loss of eggs stored for 14, 28, and 56 days, except for those from rosemary-fed hens stored at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids; Malondialdehyde; Rosemary; Thyme; Vitamin E.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200346

Effects of the Dietary Supplementation of Sucupira (Pterodon Emarginatus Vog.) and Copaiba (Copaifera Langsdorffii) Resinoils on Chicken Breast and Thigh Meat Quality and Oxidative Stability
Provedor de dados: 89
Autores: Lima,CB de; Racanicci,AMC; Oliveira,GR; Migotto,DL; Amador,SA; Souza,TC de; Tanure,CBGS; Vieira,A.
ABSTRACT An experiment was conducted to evaluate the addition of the oil resins ofsucupira (Pterodon emarginatus Vog.) and copaiba (Copaifera langsdorffii) to broiler diets on chicken meat composition, quality, and lipid peroxidation. 350 one-d-old broiler chicks were submitted to seven treatments, consisting of the diets supplemented with copaiba (COP) or sucupira (SUC) resin oils at three different concentrations (500, 900, and 1300 ppm) plus a negative control diet (CONT). At 37 days of age, 10 birds per treatment were selected according to the average weight of the experimental unit and slaughtered to collect breast and thigh meat, which was stored at 4°C for 24 hours to evaluate pH, color (L*, a*, b*), cooking weight loss (CWL), and shear force (SF)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Brazilian plants; Broiler meat; Meat quality; TBARS.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000047

EFFECTS OF THE DIETARY SUPPLEMENTATION WITH A MICROALGA EXTRACT ON BROILER PERFORMANCE AND FATTY-ACID MEAT PROFILE
Provedor de dados: 89
Autores: Petrolli,TG; Petrolli,OJ; Pereira,ASC; Zotti,CA; Romani,J; Villani,R; Leite,F; Zanandréa,FM.
ABSTRACT The present study was carried out in the poultry sector of UNOESC Xanxerê to evaluate the effect of various inclusion levels of seaweed (Schizotrichium ssp.) in the diet of broiler chickens in terms of performance, carcass yield, organ profiles and fatty acids levels in meat. We studied 480 one-day-old Cobb chicks, distributed in a completely randomized experimental design, with four treatments and six replicates containing 20 birds each, totaling 24 experimental units. At 7, 21 and 35 days of age, the birds were weighed for performance evaluation (live weight, weight gain, feed intake, feed conversion and mortality). At 35 days of age, one chicken per experimental unit was sacrificed for evaluation of carcass yield and its parts, together with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Docosahexaenoic acid; Poultry; Nutrition; Meat quality.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300324

Effects of the reduction of dietary heat increment on the performance, carcass yield, and diet digestibility of broilers submitted to heat stress
Provedor de dados: 89
Autores: Laganá,C; Ribeiro,AML; Kessler,AM; Kratz,LR; Pinheiro,CC.
This experiment aimed at verifying the effect of different diets and thermal environments on the performance, carcass yield, and diet digestibility of 21 to 42-day-old broilers. A total number of 288 21-day-old male Ross broilers were distributed in a 2 x 2 + 2 factorial arrangement, with six replicates, including the following factors: two environments (TNE - thermoneutral: 21-25ºC and 73% RH; CHS - cyclic heat stress: 25-32ºC and 65%RH), and two diets (control: 2.4% soybean oil and 19.5% protein; summer: 4.0% soybean oil and 18.5% protein). In TNE, two additional treatments were included with feed restriction of birds fed both the control and summer diets (pair-feeding), thereby maintaining the same feed intake level for both types of diet. Diet did not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment temperature; Fat; Poultry nutrition; Protein; Feed restriction.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100007

Effects of the reduction or withdrawal of the vitamin premix from the diet on chicken performance and meat quality
Provedor de dados: 89
Autores: Moravej,H; Alahyari,SM; Shivazad,M.
The present study was carried out to examine the effect of vitamin premix reduction or withdrawal in finisher diet (29 to 42 days of age) on the performance and meat quality of chicks fed a wheat/barley based diet and reared on floor pens. A total of 504 male broiler chicks (Ross® 308) were allocated to seven treatment groups, with four replicates per treatment and 18 birds per replicate. All data were analyzed according to a completely randomized design. Results showed that the reduction or withdrawal of the vitamin premix from diets in different weeks of finisher period did not affect chicken performance (p&amp;gt;0.05). There were no significant differences in TBARS values of thigh samples of birds slaughtered at 35 days of age. However, the TBARS value...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamin premix; Broiler; Floor; Performance; Wheat; TBARS.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400002

Effects of the Replacement of Soybean Meal with Pea as Dietary Protein Source on the Serum Protein Fractions of Broilers
Provedor de dados: 89
Autores: Bingol,NT; Dede,S; Karsli,MA; Değer,Y; Kılınç,Kılınç D; Kiliçalp,S.
ABSTRACT The aim of this study was to determine the effects of the replacement of different levels of protein derived from soybean meal with that from peas in broiler diets on serum protein fractions. A corn-soybean meal basal diet was formulated as the control diet (Control=C) (NRC, 1994), and then pea was added to the control diet to replace 20% (P20) or 40% (P40) of the crude protein of the control diet. The diets were randomly fed to 12 pens per treatment, each housing five birds, for 42 days. Blood samples were collected from 36 birds (3 birds x 4 pens x3 treatments) and the serum protein fractions were separated. Gamma-globulin percentage was higher in group P20 compared with C and P40 groups. Total protein, beta-globulin, and gamma-globulin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Diet; Peas; Serum protein fractions.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400639

Effects of Thymoquinone on Interleukin-1 and Interferon Gamma Gene Expression and Antibody Titers against Newcastle Disease in Broiler Chickens under Oxidative Stress
Provedor de dados: 89
Autores: Rastad,A; Sadeghi,AA; Chamani,M; Shawrang,P.
ABSTRACT An experiment was conducted to determine the effects of the dietary inclusion of different levels of thymoquinone (TQ) of broilers subjected to oxidative stress or not on the antibody titers against Newcastle disease and on the gene expression of interleukine-1 and interferon gamma. A total of 320 one-day-old broilers was randomly assigned to eight treatments with four replicates of 10 birds each, in a 4 × 2 factorial arrangement, consisting of four thymoquinone (TQ) levels (0, 5, 8, or 11 mg/kg body weight) and two levels tert-butyl hydroperoxide (t-BHP) injection (0 or 0.02 mmol/kg of body weight). Blood samples were collected from two birds per replicate to determine antibody titers against Newcastle disease. At the end of experiment, two birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Interferon gamma; Interleukine-1; Thymoquinone; Tert-butyl hydroperoxide.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400593

Effects of Transportation Distance, Slaughter Age, and Seasonal Factors on Total Losses in Broiler Chickens
Provedor de dados: 89
Autores: Arikan,MS; Akin,AC; Akcay,A; Aral,Y; Sariozkan,S; Cevrimli,MB; Polat,M.
ABSTRACT This study aimed at determining the total losses associated with the season, transportation distance, and slaughter age during the transportation of broilers from poultry farms to slaughterhouses in Turkey. All data and parameters were statistically analyzed and the change in total loss during transportation was evaluated by two-way analysis of variance to determine which factors or variables affect this change. Total transportation losses were compared among the four seasons of the year, two slaughter ages (younger broiler, 31-39 days of age; older broilers 40-46 days of age) and three distance ranges (short, ≤50 km; medium, 51-150 km; and long, ≥151 km). Total losses of 259.40 g, 307.35 g, and 350.14 g were determined for short, medium and long...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transportation; Broiler production; Slaughter age; Season; Weight losses.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300421

Effects of Varying Essential Oil Mixture Concentrations Applied Underconditions of Different Temperature Stress on Cardiac Markers and Other Blood Parameters
Provedor de dados: 89
Autores: Bayraktar,B; Tekce,E.
ABSTRACT Cardiac troponin (cTnI) and erythrocyte distribution width (RDW) have been used as specific markers for the evaluation of cardiac arrhythmias and myocardial diseases. In this experimental study, we aimed to determine the dose-dependent administration of an Essential OilMixture (EOM) (Eucalyptus globulusLabill, Thymus vulgaris, Cymbopogon nardus, and Syzygiumaromaticum) on the serum erythrocyte indices and myocardial damage. We used 400 male, one-day-old, Ross-308 chicks. Each group ((n=8) (22°C Control (C), C+250 mL/1,000 L, C+500 mL/1,000 L, C+750 mL/1,000 L), 36°C (stress control (SC), SC+250 mL/1,000 L, SC+500 mL/1,000 L, SC+750 mL/1,000 L) was further divided into eight groups with 50 animals. Each group of 50 chicks was further subdivided...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cardiac troponin I (cTnI); Erythrocyte distribution width (RDW); Essential fatty acid mixture; Temperature stress.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400329

Effects of varying levels of distillers dried grains with solubles on growth performance of broiler chicks
Provedor de dados: 89
Autores: Loar II,RE; Corzo,A.
There is no formal recommendation, regarding dietary concentration, when it comes to feeding distillers dried grains with solubles (DDGS) to young broilers. This study evaluated the effects of varying levels of DDGS in a diet to young broilers from 0 to 14d of age. Diets ranged from 0 to 32% DDGS concentration, with 8% increments. Increasing inclusion rate of DDGS led to decreased body weight gain (BWG), whereas mortality seemed to be linearly increased. However, there was an increase seen in feed conversion (FCR) in conjunction with the increase in DDGS in the diet. An inclusion level of 8% DDGS or less is recommended for starter diets for broiler chicks.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; DDGS; Feed conversion.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400010

Effects of vitamin C and E dietary supplementation on erythrocyte parameters of layer chickens reared in high ambient temperature and humidity
Provedor de dados: 89
Autores: Ajakaiye,JJ; Pérez-Bello,A; Cuesta-Mazorra,M; García-Díaz,JR; Mollineda-Trujillo,Á.
A 30-day experiment involving 720 White Leghorn (L33) layer chickens of 39 weeks of age and average live weight of 1.8 ± 0.04 kg was carried out in a completely randomized design to evaluate the effects of vitamins C and E on erythrocyte parameters of layers during natural summer conditions. Birds were allotted to 4 treatments containing 0, 150 mg vitamin C, 150 mg vitamin E, and 150 mg vitamin C plus 150 mg vitamin E/kg feed. Each treatment was replicated four times. The exposure of layers to 31±3 °C and 33±0 °C ambient temperature and 84.6% and 81.5% relative humidity, inside and outside the experimental pen, during the study period caused an increase in temperature humidity index 15.5 above the threshold value of 70 established for this species. Total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erythrocyte index; Heat stress; Hematocrit; Hemoglobin.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300010

EFFECTS OF VITAMIN E SUPPLEMENTATION ON SERUM HORMONES AND GENE EXPRESSION OF ANTI-SEASON BREEDING XINGGUO GREY GEESE (ANSER CYGNOIDES)
Provedor de dados: 89
Autores: Yin,L; Ran,J; Lian,T; Yang,C; Li,S; Liu,Y.
ABSTRACT The objective of this study was to analyse the impact of dietary vitamin E supplementation on laying performance, serum reproductive hormones concentration and gene expression in ovary and follicles of anti-season breeding goose. A total of 210 anti-season breeding geese were divided into seven treatments with six replications. Each group was supplied with diets containing different vitamin E (DL-α-tocopherol acetate) contents (0, 10, 20, 40, 80, 160, 320mg/kg). We observed that the egg production and laying rate improved significantly at doses of 10 and 80 mg/kg, while the highest egg weight appeared in the 320 mg/kg group. Meantime, 80 mg/kg of vitamin E supplementation significantly improved the concentration of follicle-stimulating hormone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamin E; Reproductive hormones; Ovary; Follicle; Dicer.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400310

Effects of Wine by-Products on Growth Performance, Complete Blood Count and Total Antioxidant Status in Broilers
Provedor de dados: 89
Autores: Pascariu,SM; Pop,IM; Simeanu,D; Pavel,G; Solcan,C.
ABSTRACT This study aimed to investigate the effect of whole grape pomace (GP), grape seed (GS) and grape pomace polyphenolic extract (GPEP) on growth performance, total antioxidant status (TAS) and complete blood count (CBC) of 40-day-old chicks (hybrid Cobb 500). A total of 432 unsexed one-day-old chicks were divided into six groups: control (CON) and five experimental groups, 10 g/kg GP, 20 g/kg GP, 5 g/kg GS, 10 g/kg GS and 15 mL/L GPEP. The results showed a higher increase in growing rate in 5 g/kg GS group, from the first week of the chicks’ life throughout their growth, the average body weight of the chicks being significantly higher (p&lt;0.01) than CON. The broilers that received 5 g/kg seeds in the diet, 10 g/kg and 20 g/kg GP respectively, have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grape pomace; Growing; Polyphenols.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200191

Effects of Yeast Glucomannan and Sodium Bentonite on the Toxicity of Aflatoxin in Broilers
Provedor de dados: 89
Autores: Azizpour,A; Moghadam,N.
ABSTRACT The aim of this study was to evaluate the efficacy of a yeast glucomannan (YG) and sodium bentonite (SB) in reducing the toxicity of aflatoxin for broilers fed a diet naturally contaminated with aflatoxin. In total, 300 7-day-old Ross 308 broilers were randomly assigned to 10 dietary treatments, consisting of a diet with no aflatoxin (positive control), a diet naturally contaminated with 250 ppb aflatoxin (negative control), and eight aflatoxin-contaminated diets supplemented with different SB and YG and their combinations. Serum biochemical parameters and liver pathological changes were investigated when broilers were 42 days old. The birds fed the negative control diet presented lower uric acid, cholesterol, and triglyceride levels and higher in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aflatoxin; Biochemical parameters; Broilers; Pathological changes; Yeast glucomannan.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000007

Effects of β-mannanase on Egg Production Performance, Egg Quality, Intestinal Microbiota, Viscosity, and Ammonia Concentration in Laying Hens
Provedor de dados: 89
Autores: Zheng,L; Cho,SH; Kang,CW; Lee,KW; Kim,KE; An,BK.
ABSTRACT Two experiments were conducted to evaluate the effects of β-mannanase on egg production performance, egg quality, intestinal microbiota, viscosity, and ammonia concentration in laying hens. In Exp. 1, two hundred and seventy 30-wk-old Hy-Line Brown laying hens were assigned to 6 diets arranged in a 3 × 2 factorial of three levels of MEn and CP [(a corn-soybean meal based diet (HEHP), a diet containing 50 kcal of MEn/kg and 1.0% less energy and CP than the HEHP (MEMP), and a diet containing 80 kcal of MEn/kg and 1.5% less energy and CP than HEHP (LELP)], and β-mannanase supplementation (0 or 0.04%). In Exp. 2, A total of two hundred and sixteen62-wk-old Hy-Line Brown laying hens were assigned to 6 dietary treatments in a 3 × 2 factorial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-mannanase egg quality; Laying hens metabolizable energy performance.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100320

Efficacy and Metabolizable Energy Equivalence of an α-Amylase-β-Glucanase Complex for Broilers
Provedor de dados: 89
Autores: Vieira,SL; Stefanello,C; Rios,HV; Serafini,N; Hermes,RG; Sorbara,JOB.
A trial was conducted to evaluate the effects of adding an exogenous α-amylase-β-glucanase complex produced from Bacillus amyloliquefaciens on the growth performance, carcass yield, and relative AME bioequivalence in broilers fed corn-soy diets from 1 to 40 d of age. One thousand seven hundred and fifty one-day-old Cobb x Cobb 500 slow-feathering male broilers were randomly allotted to seven treatments with 10 replicates of 25 birds each as follows: control diet (C); C diet with reduction of 60 (C-60), 90 (C-90), or 120 (C-120) kcal AME/kg; C diet with reduction of 120 kcal AME/kg and supplemented with 200 (C-120-200), 300 (C-120-300), or 400 (C-120-400) mg of the enzyme complex/kg. Each g of the enzyme complex corresponded to 200 kilo-Novo α-amylase and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Α-amylase; Β-glucanase; Broiler; Carbohydrases; Enzyme.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200227

Efficacy of a Synthetic Antioxidant Treatment in Stabilizing Poultry Byproduct Meal and Subsequent Impact of the Treated Meal on Selected Growth Parameters of Broilers
Provedor de dados: 89
Autores: Ahmad,H; Khalique,A; Naveed,S; Zia,MW; Rasool,Z; Zahid,U; Moeed,A.
ABSTRACT This study was conducted to investigate the effect of a commercial antioxidant (CAO; Rendox Plus®) treatment in stabilizing the poultry byproduct meal (PBPM) and then the subsequent effect of the treated PBPM on growth of broilers. Five batches A, B, C, D and E of PBPM were treated with CAO at 0, 250, 500, 750 and 1000 mL/ton, respectively and stored for 42 days. Oxidative stability of PBPM was estimated on day 0 and then weekly using Peroxide Value and Thiobarbituric Acid tests. PBPMs treated with 750 &amp;1000 mL/ton presented the least oxidation and were selected to be included in broiler diets. A total of 240 one-day-old non-sexed Hubbard broilers were randomly divided into two flocks of 120 birds each. Each flock was further divided into four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Growth parameters; Poultry byproduct meal; Fat oxidation; Antioxidant slaughter traits.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300471

Efficacy of Savory Essential Oil Utilization in Conventional and Encapsulated Forms on Performance of Broiler Chickens
Provedor de dados: 89
Autores: Mousapour,A; Salarmoini,M; Afsharmanesh,M; Ebrahimnejad,H; Meimandipour,A.
ABSTRACT This survey aimed to evaluate the effects of dietary supplementation of different forms of savory essential oil (SEO) on growth performance, intestinal morphology and microbial population in broiler chickens. A total of 360 one-day-old male broilers were randomly allocated to 6 dietary treatment groups with 5 replicates per treatment and 12 birds per pen. The experiment consisted of a 2×3 factorial arrangement including two different forms [encapsulated SEO (ESEO) and nonencapsulated SEO (NSEO)] in three levels (0, 150, and 300 mg/kg diet) of SEO. Growth performance, jejunal morphology and intestine microbial population were examined. Our results revealed that feed intake was not influenced by the dietary treatments in different experimental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oil; Intestinal health; Nutrition; Savory.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400307

Efficacy of several Salmonella vaccination programs against experimental challenge with Salmonella gallinarum in commercial brown layer and broiler breeder hens
Provedor de dados: 89
Autores: Paiva,JB de; Penha Filho,RAC; Argüello,YMS; Silva,MD da; Gardin,Y; Resende,F; Berchieri Junior,A; Sesti,L.
The protective effect of various Salmonella vaccines regimens against an experimental Salmonella Gallinarum challenge (SGNalr strain at 12 wk of age) was evaluated in two experiments. In Experiment 1 commercial brown layers were vaccinated according to one of the following programs: (i) two doses of a SE bacterin (Layermune SE; group 1); (ii) a first dose of a live SG9R vaccine (Cevac SG9R) followed by a SE bacterin (Layermune SE; group 2); (iii) one dose of each of two different multivalent inactivated vaccines containing SE cells (Corymune 4 &amp;amp; Corymune 7; group 3) or (iv) not vaccinated (group 4). In Experiment 2, broiler breeders were given the same vaccination treatments except for the group vaccinated with the multivalent vaccines. Overall, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fowl Typhoid; Killed Salmonella vaccines; Live Salmonella vaccines; Salmonella Gallinarum; Salmonella Gallinarum challenge.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100010

Efficacy of Zinc/Creatine Supplementation on Improving Growth Performance of Local Balady Chicks
Provedor de dados: 89
Autores: Amer,NSI; Hatab,MH; Sabic,EM.
ABSTRACT An experiment was designed to study the efficacy of Zinc and or creatine monohydrate (CMH) supplementation, either alone or in combination, on improving growth performance of Balady chicks. A total number of 144 Balady chicks were randomly divided into four equal groups. The first treatment was fed the basal diet and served as control, while groups 2, 3, and 4 were given the basal diet and supplemented drinking water with, 0.6 mg/ml (zinc sulphat); 0.45 mg/ml (CMH); 0.6 mg/ml (zinc sulphat) + 0.45 mg/ml (CMH), respectively. The results indicated that the live body weight, weekly body weight gain and feed efficiency were significantly (p≤0.05) improved in all treated groups compared with the control. Also, significant decrease (p≤0.05) has been...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zn and CMH supplementation; Balady chicks; Performance; Carcass characteristics; Hematological; Biochemical indices.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200219

Efficiency of Electrical Stunning by Electronarcosis: Current Situation and Perspective of Improvement in a Medium-Size Processing Plant
Provedor de dados: 89
Autores: Barbosa,RL; Adamczuk,GO; Dvojatzki,P; Trentin,MG; Lima,JD.
ABSTRACT The objective of this study was to evaluate the efficiency of electrical stunning by electronarcosis in a medium-size poultry processing plant located in southern Brazil. The current measurement of this type of stunning is presented, and then improvements to this method are proposed. Data were collected for 90 days. A quality indicator was proposed: the Stunning Severity Index (SSI), which includes elements of Statistical Process Control (SPC) using a p-chart (proportion chart) and measures. This index comprises the variables "wing-flapping," "arched head," and "rhythmic breathing." Using the proposed index, 5% of the birds, on average, presented inefficient stunning symptoms.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Animal welfare; Electric stunning by electronarcosis; Stunning severity index; Statistical Process Control; Control charts.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200331

Efficiency of prebiotics and probiotics on the performance, yield, meat quality and presence of Salmonella spp in carcasses of free-range broiler chickens
Provedor de dados: 89
Autores: Takahashi,SE; Mendes,AA; Saldanha,ESPB; Pizzolante,CC; Pelícia,K; Quinteiro,RR; Komiyama,CM; Garcia,RG; Almeida Paz,ICL.
Two trials were carried out in the present study. Trial I evaluated the performance, carcass yield and breast meat quality, whereas Trial II evaluated the efficacy of utilizing prebiotics + probiotics on the control of Salmonella spp incidence in the carcasses of free-range broilers. In Trial I, 688 one-day-old male chicks of the Naked Neck Label Rouge strain were used, distributed in a randomized block design arranged according to a 2 x 2 factorial: control diet or diet supplemented with probiotics and prebiotics; and two rearing systems (confined or with access to paddocks - 3m²/bird), using four replicates with 35 birds each. The birds were reared until 84 days of age following the recommendations of management and nutrition for free-range strains, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yield; Free-range broilers; Performance; Prebiotics and probiotics; Salmonella spp.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300003

Egg hatchability prediction by multiple linear regression and artificial neural networks
Provedor de dados: 89
Autores: Bolzan,AC; Machado,RAF; Piaia,JCZ.
An artificial neural network (ANN) was compared with a multiple linear regression statistical method to predict hatchability in an artificial incubation process. A feedforward neural network architecture was applied. Network trainings were made by the backpropagation algorithm based on data obtained from industrial incubations. The ANN model was chosen as it produced data that fit better the experimental data as compared to the multiple linear regression model, which used coefficients determined by minimum square method. The proposed simulation results of these approaches indicate that this ANN can be used for incubation performance prediction.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial incubation; Artificial neural networks; Hatchability; Multiple linear regression.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200004

Egg quality in layers housed in different production systems and submitted to two environmental conditions
Provedor de dados: 89
Autores: Barbosa Filho,JAD; Silva,MAN; Silva,IJO; Coelho,AAD.
The production system using cages is a highly polemical issue in Europe, because of the space restriction imposed to laying hens. It is considered that the cage system might compromise important comfort movements, welfare and egg quality. This study evaluated egg quality and welfare of two strains of hens housed in a conventional system (battery laying cages) or litter system with nest and perches, and submitted to heat stress or comfort conditions. Two groups of 20 birds (10 Hy-line W36 and 10 Hy-line Brown) were submitted to two environmental conditions (26°C and 60% RH or 35°C and 70% RH) and two housing systems (cages or litter) in the early production phase. Egg quality was analyzed based on egg weight, eggshell thickness, specific gravity, and Haugh...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Environment; Housing systems; Laying hens.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100003

Egg quality of hens fed different digestible lysine and arginine levels
Provedor de dados: 89
Autores: Carvalho,FB de; Stringhini,JH; Matos,MS; Café,MB; Leandro,NSM; Gomes,NA; Santana,ES; Jardim Filho,RM.
This experiment aimed at evaluating the influence of the supplementation of digestible lysine and digestible arginine at different ratios in the diet fed to layers between 24 to 44 weeks of age on egg quality. In total,320 Lohmann LSL laying hens were allotted according to a completely randomized design in a 2 x 4factorial arrangement, consisting of two digestible lysine levels (700 or 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900,or 1000 mg/kg of diet). Diets contained, therefore, digestible Lys:Arg ratios of 100, 114, 128, and 142 when the diet contained 700 mg digestible lysine per kg of diet, and 78, 89, 100, and 111 when 900 mg digestible lysine per kg was supplemented. The data obtained with digestible arginine levels were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonism; Digestible amino acid; Egg components; Haugh units.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100063

Egg traits and physiological neonatal chick parameters from broiler breeder at different ages
Provedor de dados: 89
Autores: Luquetti,BC; Gonzales,E; Bruno,LDG; Furlan,RL; Macari,M.
This investigation was carried out to study egg traits (weight, specific gravity and eggshell thickness), and neonatal chick parameters (weight, blood, cardiac and lung parameters) from breeder at different ages. After hatching, neonatal chicks, male and female, from broiler breeder at three different ages (30, 45 and 60 weeks) were sacrificed and blood (red blood cell number, hematocrit, mean cell volume, blood viscosity, and haemoglobin), cardiac (right ventricle and total ventricle weights, cardiac index) and lung (mean pulmonary pressure, fresh relative lung weight) parameters were measured. No significant differences in eggshell thickness or specific gravity were observed in eggs from the three different breeder age. The incubated eggs and neonatal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder age; Blood; Cardiac; Lung parameters; Neonatal chicks.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100002

Eggshell and Bone Quality in Two Different Genetic Groups of Aged Layer Breeders
Provedor de dados: 89
Autores: Rayan,GN; El-Attar,AH; Fathi,MM.
ABSTRACT The present study was conducted on pair aged commercial laying breeder strains (Hy-Line Brown and Hy-Line W-36) to evaluate genetic differences of eggshell and bone quality. In addition, egg production performance, mortality rate, internal organs and reproductive measurements were determined. Correlation coefficients among some eggshell and bone traits were calculated. White layer breeder hens had significantly higher percentages of hen-day and hen-housed egg production compared to the brown one. Brown Hy-Line layer breeder strain had better eggshell quality compared to W-36 Hy-Line layer breeder strain. The white layer breeder strain had a significantly higher relative oviduct weight compared to the brown one. Brown layer breeder strain recorded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeders strain; Eggshell; Bone quality; Correlation coefficients.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200311

Eggshell apex abnormalities in a free-range hen farm with mycoplasma synoviae and infectious bronchitis virus in Rio de Janeiro state, Brazil
Provedor de dados: 89
Autores: Santos,FC dos; Brandão,MDM; Silva,CC da; Machado,LS; Soares,MV; Barreto,ML; Nascimento,ER do; Pereira,VLA.
A farm with 3,000 free-range hens between 24 and 65 weeks of age was investigated. These hens were separated in small flocks of 400 to 700 birds, presenting 10 to 23% egg production reduction. Twenty serum samples were collected during the period of drop in egg production and three weeks later for the investigation of Mycoplasma synoviae (MS), M. gallisepticum (MG) and Infectious Bronchitis Virus (IBV) antibodies using ELISA. At the time of the second collection, egg production had resumed to normal levels; however, with 10.23% of the eggs showed eggshell abnormalities limited to the apex. Eggshell strength was significantly different between normal and those with eggshell apex abnormalities, but not other egg-quality parameters. ELISA tests showed that MS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Mycoplasm; Egg defects; Egg abnormality; Economic loss.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200015

Eggshell Qualities as Indicative of Eggshell Strength for Layer Selection
Provedor de dados: 89
Autores: Kibala,L; Rozempolska-Rucinska,I; Kasperek,K; Zieba,G; Lukaszewicz,M.
ABSTRACT The study aimed at investigating which of four traits is the most representative of eggshell strength (destructive eggshell thickness measurement, eggshell weight, egg specific gravity, ultrasonic measurement of eggshell thickness) and could be used for selection purposes. To date, investigations focused mostly on pairwise (eggshell strength vs. another eggshell feature) analyses, resulting in two-, maybe three-trait, models when eggshell traits are considered. Since the covariance estimates are also model dependent, we collected five eggshell traits within one analysis, which better reflects what occurs in nature. The eggs were collected from 4571 Rhode Island White and 2426 Rhode Island Red hens. A multiple-trait animal model and the REML method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Variance components; Selection criterion; Trait choice.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100099

Electrolytic Balance in Broiler Chicks During the First Week of Age
Provedor de dados: 89
Autores: Borges,SA; Maiorka,A; Laurentiz,AC; Fischer da Silva,AV; Santin,E; Ariki,J.
Two experiments were carried out using 712 day-old chicks to evaluate the electrolytic balance (Na+K-Cl) in pre-starter (1-7 days) broiler diets. The feed, based on corn and soybean meal with 21.5 % protein and 2,900 kcal ME/kg, was offered ad libitum. In experiment I, K level was fixed, and Na and Cl levels were changed, using four 4 treatments and eight replicates of 16 birds. In experiment II, increasing levels of Na and K were used, with a total of four treatments and five repetitions of 10 birds. In both experiments, the dietary electrolytic balance was 40; 140; 240 and 340 mEq/kg. Electrolytic balance caused a quadratic effect on weight gain and feed:gain ratio, and a linear increase in feed intake when the electrolytic balance was increased by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Chlorine; Electrolytes; Potassium; Sodium.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200008

Elisa evaluation of the levels of antibodies against Infectious Bronchitis Virus in laying hens using egg yolk as substrate
Provedor de dados: 89
Autores: Rauber,RH; Flôres,ML; Pereira,CE; Grigulo,M.
The present work was carried out to compare Infectious Bronchitis Virus (IBV) antibody titers in serum and egg yolk samples from laying hens. Sixty paired blood and egg samples were collected from laying hens of two farms. Serum samples were frozen, while egg yolk samples were diluted (1:500) before freezing. Serum and yolk samples were tested for the presence of IBV antibodies by indirect ELISA (commercial kit) and titers were compared by a correlation test (alpha=0.05). There was a high correlation (r=0.62) between the two kinds of samples, which means that titers of IBV antibodies in the egg yolk and in serum samples are quite the same. Considering that blood collection causes deep stress that leads to economic losses, and since eggs are collected daily...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibody; Egg yolk; ELISA; Infectious bronchitis; Serology.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200008

Emulsifier in broiler diets containing different fat sources
Provedor de dados: 89
Autores: Guerreiro Neto,AC; Pezzato,AC; Sartori,JR; Mori,C; Cruz,VC; Fascina,VB; Pinheiro,DF; Madeira,LA; Gonçalvez,JC.
This present study aimed at evaluating the effect of the addition of an emulsifier to diets containing soybean oil, poultry fat or their blend, on the performance, carcass traits, serum lipid levels, pancreatic lipase concentration and nutrient digestibility of broilers. A randomized block design was applied using a 3 x 2 factorial arrangement, with three fat sources (soybean oil, poultry fat, and a blend of 50% soybean oil and 50% poultry fat) and the addition or not of an emulsifier. In experiment I, broiler performance, carcass traits, serum cholesterol, HDL, and triglyceride levels, and pancreatic lipase activity in 42-day-old broilers were evaluated. In experiment II, dry matter (DM), ether extract (EE), crude protein (CP) and crude fiber (CF)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestibility; Pancreatic lipase; Performance; Poultry offal fat; Serum lipids; Soybean oil.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200006

Emulsifier Supplementation Response in Ross 308 Broilers at 1-10 Days
Provedor de dados: 89
Autores: Shahid,I; Sharif,M; Yousaf,M; Ahmad,F; Anwar,U; Ali,A; Hussain,M; Rahman,MA.
ABSTRACT The study was conducted to check the effect of emulsifier supplementation on growth performance of broiler birds on starter phase, from days 1 to 10. In the current study, a total of twelve hundred twenty-four Ross 308 broiler one day old chicks were used. Ross 308 broiler chicks were divided into two groups in such a way that each group had12 replicates, and each replicate had 51 birds. The duration of the current trial was of 10 days. Chicks were fed experimental diets with or without emulsifier supplementation. Daily feed intake, body weight, feed conversion ratio and nutrient digestibility were recorded. Mortality was recorded on a daily basis, and feed intake was also corrected for mortality. Data collected from the experiment was interpreted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emulsifier; Broiler; Starter Phase; Performance.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300310

Energetic Values and Inclusion Levels of the Dry Residue of Cassava in Broiler Diet
Provedor de dados: 89
Autores: Trautenmüller,H; Broch,J; Pires Filho,IC; Silva,IM; Frank,R; Schöne,RA; Carvalho,PLO; Eyng,C; Nunes,RV.
ABSTRACT The objective of this study was to evaluate the energetic values of dry residue of cassava (DRC) and the effects of its inclusion in broiler diets on performance, intestinal morphometry, protein and fat deposition rate, and carcass and cut yields. In experiment I, two metabolism trials were carried out from 11-21 and from 31-41 days of age. The birds were distributed in a completely randomized design and DRC was included at levels of 10, 20, 30 and 40% in the basal diet. In experiment II, 980 male chicks were distributed in a completely randomized design with seven treatments (0; 2; 4; 6; 8; 10; 12% DRC) and seven replicates. DRC levels did not influence (p&gt;0.05) the energetic values. From days 1-7, weight gain (WG) had a linear adjustment, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry farming; Co-product; Cassava; Intestinal morphometry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400303

Energy and lysine for broilers from 44 to 55 days of age
Provedor de dados: 89
Autores: Araújo,LF; Junqueira,OM; Araújo,CSS; Barbosa,LCGS; Ortolan,JH; Faria,DE; Stringhini,JH.
An experiment was conducted to evaluate the performance and carcass yield of broilers at 55 days of age fed diets with different levels of metabolizable energy and lysine. Evaluated data of performance were weight gain, feed intake, energy intake, lysine intake, caloric conversion and feed conversion. Carcass assessment was performed based on data from carcass yield, breast weight, whole wings, whole legs, back, head + neck, feet and abdominal fat. A 3 x 3 factorial arrangement was used, with 3 levels of metabolizable energy (3,200; 3,400 and 3,600 kcal ME/kg) and 3 lysine levels (0.95%; 1.05% and 1.15%). There was no interaction between the two factors. Nevertheless, increasing levels of metabolizable energy improved weight gain (745 g; 841 g and 910 g,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Lysine; Metabolizable energy; Performance.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400007

Energy utilization of by-products from the soybean oil industry by broiler chickens: acidulated soapstock, lecithin, glycerol and their mixture
Provedor de dados: 89
Autores: Peña,JEM; Vieira,SL; Borsatti,L; Pontin,C; Rios,HV.
Acidulated soy soapstock (ASS) and lecithin (LEC) are by-products from processing soy oil (SO) for human consumption, whereas glycerol (GLY) can be obtained through the transesterification of vegetable oils during the production of biodiesel. These are valuable by-products for poultry feeds that have been underutilized in many parts of the world. One study was conducted to estimate the AMEn of ASS, LEC, GLY as well as of their mixture (MIX: 85% ASS, 5% LEC and 10% GLY). Two hundred and sixty Cobb 500 female broilers of 20 days of age were housed in steel wire battery cages in a controlled temperature room for broilers. A completely randomized (energy sources x fat inclusion level) factorial design was applied, with 4 replicates of three birds per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidulated soapstock; Broiler; Glycerol; Lecithin.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400015

Energy values of traditional ingredients and sugarcane yeast for laying hens
Provedor de dados: 89
Autores: Silva,DAT da; CBV,Rabello; Santos,MJB dos; Lima,MB de; Silva,EP da; Arruda,EMF de; Lopes,CC.
An experiment was conducted to determine the chemical composition and apparent metabolizable energy (AME) and apparent metabolizable energy corrected for nitrogen balance (AMEn) values of corn, soybean meal (SBM), soybean oil (SO) and sugarcane yeast (SY) (Saccharomyces cerevisiae). A metabolism trial was performed with 120 Dekalb White laying hens at 65 weeks of age, using the method of total excreta collection. Birds were housed in metabolism cages and distributed according to a completely randomized design into five treatments with, six replicates of four birds each. The experimental period consisted of four days of adaptation and four days of excreta collection. The experimental diets included: a reference diet based on corn and SBM and four test diets...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corn; Metabolizable energy; Soybean meal; Soybean oil.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300007

Enteric viruses in turkey flocks: a historic review
Provedor de dados: 89
Autores: Alavarez,JM; Ferreira,CSA; Ferreira,AJP.
In this review, diagnostic techniques and viral agents involved in enteric diseases affecting turkeys are described. Data from field observations and laboratory researches have been reported in turkey flocks for over 70 years, and several viruses have been identified. After a period of 30 years of inoculation experiments and neutralization studies, adequate visualization of the viruses was achieved using electronic microscopy. During the following years, several studies were then conducted to isolate and classify those viruses using cell-culture, embryo-propagation, serological tests, genome electropherotyping by polyacrylamide gel electrophoresis of double-stranded RNA viruses, and recently, nucleic acid studies. Thus, since the 1990s, the nucleic-acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Turkey; Enteritis; Viruses; Poults; Diagnosis.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300001

Enterobacteria isolation in ostrich eggs (Struthio Camelus)
Provedor de dados: 89
Autores: Knöbl,T; Cappellete,CP; Vigilato,MAN.
This study was conducted to determine the presence of enterobacteria in the eggs of ostriches reared on a farm with a history of reproductive failure. Ninety samples from twenty eggs were submitted to bacteriological tests. The results showed Enterobacteria growth in 100% of the eggs. The microorganisms isolated were Hafnia alvei in 50% (10/20), Serratia spp. in 20% (4/20), Escherichia coli in 15% (3/20), and Citrobacter freundii in 15% (3/20). All eggs presented poor eggshell quality, which favored enterobacteria contamination. Hafnia alvei was present only in the internal egg structures (albumen and yolk sac), suggesting the possibility of vertical infection.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterobacteria; Hafnia alvei; Ostriches; Reproduction; Struthio camelus.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100006

Entero-hepatic pathobiology: histopathology and semi-quantitative bacteriology of the duodenum
Provedor de dados: 89
Autores: Ito,NMK; Miyaji,CI; Lima,EA; Okabayashi,S; Claure,RA; Graça,EO.
Duodenum swabs were harvested from 80 broilers in 15 flocks of 8 broiler farms and were submitted to bacteriological evaluation. Five broiler breeders were sampled to obtain comparative data. Macro and microscopic lesions in the gut and the liver were evaluated in all birds submitted to swab harvesting and also broilers of two slaughter plants. Semiquantitative bacterial examination in duodenum swabs demonstrated higher microorganism growth in blood agar than in MacConkey medium. Staphylococcus sp, Enterococcus sp and Escherichia coli were found in some broiler flocks. An increased cellularity of the muscular mucosae of duodenum villi and/or the presence of some gametocytes or schizonts of coccidia were found in the lesioned gut in addition to high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Enteritis; Gut bacteriology; Hepatitis.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100005

Environmental and physiological variables during the catching of broilers
Provedor de dados: 89
Autores: Queiroz,ML de V; Barbosa Filho,JAD; Duarte,LM; Brasil,D de F; Gadelha,CRF.
The objective of this study was to determine the critical points of the operation of broiler catching for transport to the processing plant from animal and operational perspectives. During catching, chickens, environmental variables (temperature and relative humidity) were constantly monitored to determine the Enthalpy Comfort Index (IEC). Also, the physiological variable rectal temperature (RT) was monitored as an indicator of stress suffered by the birds during this handling procedure. Bird welfare were evaluated by analyzing their behavior. The bag method was effective to prevent the struggling of birds while being taken from the broiler house to the transport truck, reducing physical injuries and losses during catching.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Environment; Poultry; Pre-slaughter; Rectal temperature.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100037

Enzyme Complex Added to Broiler Diets: Effects on Performance, Metabolizable Energy Content, and Nitrogen and Phosphorus Balance
Provedor de dados: 89
Autores: Pessôa,GBS; Ribeiro Junior,V; Albino,LFT; Araújo,WAG; Silva,DL; Hannas,MI; Rostagno,HS.
ABSTRACT Two trials were performed to evaluate the effects of an enzyme complex (EC) on broiler performance, metabolizable energy, and phosphorus and nitrogen balance. In the first trial, 960 one-day-old male Cobb broilers were randomly distributed in a 3 x 2 factorial arrangement (three nutritional levels and the inclusion or not of EC), totaling six treatments with eight replicates of 20 birds per pen, and reared until 42 days of age. The control diet was formulated to meet the broilers' nutritional requirements. The other diets contained reduced available phosphorus (P), metabolizable energy, and amino acid levels, considering 100% and 150% of the EC nutritional matrix. The inclusion of the EC (200 g/ton) resulted in better broiler performance,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Broiler; Enzyme.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300467

Enzyme Supplementation of Broiler Feeds with Reduced Mineral and Energy Levels
Provedor de dados: 89
Autores: Nunes,JO; Abreu,RD; Brito,JAG; Silva,RF da; Oliveira,LS; Jesus,NA.
ABSTRACT An experiment was conducted with the purpose of evaluating enzyme blends on the performance, carcass traits, and bone mineralization of broilers. In total, 928 one-day-old Cobb 500 male chicks of were used. A completely randomized design with four treatments with eight replicates of 29 birds each was adopted. The evaluated treatments were: 1- Positive Control (PC), feed containing the nutritional recommendations of the genetic company's manual; 2- Negative Control (NC), feed with reductions of 75 kcal/kg AME and 0.10 and 0.12 percent points of phosphorus and calcium, respectively; 3 - NC + enzyme blend (amylase + b-glucanase, xylanase, and phytase; 250 g/t of feed) and 4 - NC + enzyme complex (phytase, amylase, xylanase, glucanase, pectinase,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Bone mineralization; Broilers; Carcass; Performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000015

Epidemiology of Avian Infectious Laryngotracheitis with Special Focus to South America: an update
Provedor de dados: 89
Autores: Parra,SHS; Nuñez,LFN; Ferreira,AJP.
ABSTRACT Avian Infectious laryngotracheitis (AILT) is a respiratory tract disease of great importance because it causes significant economic losses in the poultry industry around the world. It is caused by a Gallid herpesvirus type 1, a member of the genus Iltovirus. The target system for Avian Infectious Laryngotracheitis virus (AILTV) infections is the respiratory system, and the main organ in which the virus remains latent is the trigeminal ganglia. However, the virus has demonstrated tropism for other organs besides the respiratory tract. The main transmission routes are ocular and respiratory. Infected birds with clinical symptoms are main sources of transmission, but birds with latent infections, litter, and contaminated fomites may also transmit the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian infectious laryngotracheitis; Biosecurity; Epidemiology; South America; Chicken.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400551

Epididymal lithiasis in Gallus gallus domesticus
Provedor de dados: 89
Autores: Rocha Jr.,JM; Mahecha,GAB; Dornas,RAP; Kuana,SL; Martins,NRS.
A study on the occurrence of epididymal lithiasis (EL) in Gallus gallus domesticus of different breeds and from different geographical regions of Brazil was carried out. Forty breeding roosters were collected in the states Santa Catarina, São Paulo, Minas Gerais, Espírito Santo and Goiás, representing two specific pathogen free Leghorn lines (SPF), one commercial Leghorn layer breeder (Hy-Line) line, two commercial broiler breeder lines (Ross and Cobb), and two backyard chicken flocks. In commercial poultry breeders, EL was observed mainly after 55 weeks of age, and lithus resulted in lower fertility caused by inadequate maturation of spermatozoa and testicular atrophy, which evolved to more severe testicular dysfunction at 100 weeks of age. One hundred...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epididymal lithiasis; Gallus gallus domesticus; Infertility; Rooster; Testicular calculus.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100004

Epididymal Sperm Characteristics, Testicular Morphometric Traits and Growth Parameters of Rabbit Bucks Fed Dietary Saccharomyces cerevisiae and/or Zinc Oxide
Provedor de dados: 89
Autores: Emmanuel,DC; Amaka,AE; Okezie,ES; Sunday,UP; Ethelbert,OC.
ABSTRACT The objectives of this twelve-week feeding trial were to determine the effects of dietary Saccharomyces cerevisiae and/or zinc oxide on epididymal sperm characteristics, testicular morphometric traits, and growth parameters of bucks. 16 (New Zealand White) bucks 16-wk-old, weighing 2.8kg were randomly allotted to one of 4 treatment groups. Each treatment was replicated four times, with 1 buck per replicate, in a completely randomized design (CRD). Each treatment group was randomly assigned to one of the four commercial experimental diets designated thus: TA = control diet with no additives, TB = 0.12g/kg Saccharomyces cerevisiae, TC = 150mg/kg zinc oxide and TD = 0.12g/kg Saccharomyces cerevisiae +150 mg/kg zinc oxide. Although treatment had no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrition; Bucks; Semen; Saccharomyces cerevisiae; Zinc oxide.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100311

Epigallocatechin Gallate (EGCG) Inhibited the Alv-J-Induced Apoptosis in Df-1 Cells by Inactivation of Nuclear Factor κb Pathway
Provedor de dados: 89
Autores: Zhang,Y; Yang,H; Wu,X; Deng,M; Li,Z; Xu,Z.
ABSTRACT Avian leukosis virus subgroup J (ALV-J), a member of the retroviridae family, can infect both broilers and layers and induce a spectrum of different neoplasms, resulting in serious economic losses in poultry production. Epigallocatechin-3-gallate (EGCG), the major constituent of green tea, has demonstrated remarkable anti-inflammatory and cancer chemopreventive effects in many animal tumor bioassays, cell culture systems and epidemiological studies. To assess the antiviral effects of EGCG on ALV-J-induced cell apoptosis in vitro, DF-1 cells were treated with different EGCG concentrations (0, 5, 10, 20 and 40 µg/mL), and their antiviral effects were examined at different time points (0, 24, 48, 72 and 96 h) using a variety of assays. EGCG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ALV-J; EGCG; NF-kB; DF-1 cell; Apoptosis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100323

Equilibrium Condition during Locomotion and Gait in Broiler Chickens
Provedor de dados: 89
Autores: Alves,MCF; Almeida Paz,ICL; Nääs,IA; Garcia,RG; Caldara,FR; Baldo,GAA; Nascimento,GR; Amadori,MS; Felix,GA; Garcia,EA; Molino,AR.
ABSTRACT The experiment was carried out with the objective of evaluating a methodology to estimate the angulation and equilibrium condition, relating them to gait score and the main diseases of the locomotion system in males and females of commercial broiler strains. A completely randomized experimental design in a factorial arrangement (2x2) was applied, consisting of two sexes and two genetic strains, with five replicates of 53 chickens each. The following characteristics related to broiler locomotion were studied: gait score (GS); incidence of Valgus (VAL) and Varus (VAR) deformities and of pododermatitis (POD); body angle relative the ground (ANG); equilibrium condition (EC); body weight (BW) and breast weight (BrW); and incidence of femoral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angulation; Bone pathologies; Broiler production; Locomotion problems; Posture; Welfare.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300419

Errata
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400011

Errata
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/article
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300011

ERRATA
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100010

Errata
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/article
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300011

ERRATA
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400833

Errata
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100121

ERRATAS: Descriptive Anatomy of Hepatic and Portal Veins with Special Reference to Biliary Duct System in Broiler Chickens (Gallus gallus domesticus): A Recent Illustration
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200900

ERRATUM
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300549

Erratum
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300549

Erratum
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100201

Erratum
Provedor de dados: 89
Tipo: Info:eu-repo/semantics/other
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400747

Escherichia coli in Chicken Carcasses in Southern Brazil: Absence of Shigatoxigenic (STEC) and Isolation of Atypical Enteropathogenic (aEPEC)
Provedor de dados: 89
Autores: Cerutti,MF; Vieira,TR; Zenato,KS; Werlang,GO; Pissetti,C; Cardoso,M.
ABSTRACT The aim of this study was to investigate the presence of shiga toxin-producing Escherichia coli (STEC) and atypical enteropathogenic Escherichia coli (aEPEC) in frozen chicken carcasses sold at stores in southern Brazil. Typical E. coli colonies were enumerated in 246 chicken carcasses, and the presence of stx1, stx2, eae genes was investigated in their rinse liquid and in E. coli strains isolated from those carcasses. Strains of E. coli were also investigated for the presence of bfp gene. A median of 0.6 cfu.g-1(ranging from &lt;0.1 to 242.7 cfu.g-1) of typical E. coli colonies was found in the carcasses. Shiga toxin-encoding genes (stx1 and stx2) were not detected, indicating that the chicken carcasses were negative for STEC. The intimin protein...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken meat; Enteropathogenic Escherichia coli; EPEC; Shigatoxigenic Escherichia coli; STEC.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100310

Establishment of a Pathogenicity Index for Mice to Pasteurella multocida Strains Isolated from Poultry and Swine
Provedor de dados: 89
Autores: Emery,BD; Furian,TQ; Chitolina,GZ; Pilatti,RM; Borges,KA; Salle,CTP; Moraes,HLS.
ABSTRACT Fowl cholera is a contagious disease that results from infection by the bacterium Pasteurella multocida. This microorganism is extensively distributed among animal species, but little is known regarding it’s pathogenesis and specificity to various hosts. Many studies using pathogenicity evaluation methods are subjective and difficult to quantify because they are often only involved in the observation of the lethal capacity of the agent in experimental inoculation. Due to a lack of more consistent data, this study aimed to establish a classification model of P. multocida pathogenicity in mice using strains isolated from poultry and swine. A total of 94 strains of P. multocida isolated from clinical cases of FC and from lungs of swine were tested. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mice; Pasteurella multocida; Pathogenicity index.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200237

Establishment of a Pathogenicity Index for One-day-old Broilers to Pasteurella multocida Strains Isolated from Clinical Cases in Poultry and Swine
Provedor de dados: 89
Autores: Pilatti,RM; Furian,TQ; Lima,DA; Finkler,F; Brito,BG; Salle,CTP; Moraes,HLS.
ABSTRACT Although Pasteurella multocida is a member of the respiratory microbiota, under some circumstances, it is a primary agent of diseases , such as fowl cholera (FC), that cause significant economic losses. Experimental inoculations can be employed to evaluate the pathogenicity of strains, but the results are usually subjective and knowledge on the pathogenesis of this agent is still limited. The objective of this study was to establish a new methodology for classifying the pathogenicity of P. multocida by formulating a standard index. Strains isolated from FC cases and from swine with respiratory problems were selected. One hundred mL of a bacterial culture of each strain, containing 106 CFU, was inoculated in 10 one-day-old broilers. Mortality after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fowl cholera; Inoculation; Pasteurella multocida; Pathogenicity index.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200255

Establishment of Uropygial Gland Growth Curves for White, Three-Way Crossed Mule Ducklings
Provedor de dados: 89
Autores: Chen,YH; Peh,HC; Roan,SW.
Growth curves for the uropygial gland (UG) of white, 3-way crossed mule ducklings were established using the Gompertz function. In total, 144 ducklings were fed in 12 floor pens with 12 birds in each pen. Each pen contained an equal number of animals of each sex. Feed and water were supplied ad libitum throughout the entire experimental period. The weekly change in UG weight was recorded in males and females from hatch to 8 weeks of age. The weight and length of the UG, the width of the lobus glandulae uropygialis, the length and width of the pluma of the circulus uropygialis, and the index of the papilla uropygialis were measured once a week in individual ducklings in one pen. The average UG weight gain observed in white, 3-way crossed drakes was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gompertz function; Mule ducks; Uropygial gland growth curve.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200209

Estimates of methionine and sulfur amino acid requirements for laying hens using different models
Provedor de dados: 89
Autores: Saki,AA; Naseri Harsini,R; Tabatabaei,MM; Zamani,P; Haghight,M.
This experiment was conducted to evaluate the effects of dietary methionine (Met) content on the performance of white commercial laying hens and to determine Met and total sulfur amino acids requirements (TSAA). These requirements were estimated using three statistical models (broken-line regression, exponential and second order equations) to evaluate their abilit to determine amino acid requirements. A total of 216 laying hens (23 wks of age) was used in a completely randomized design (CRD) with six treatments with four replicates of nine birds each. The basal diet contained 15.25% crude protein, 2830.16 kcal/kg ME and 0.24% Met. Synthetic DL-Met was added to the deficient (basal) diet in 0.05% increments to make the other five experimental diets (0.29,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broken-line regression; Exponential equation; Methionine; Second order equation; Total sulfur amino acids.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300008

Estimating mortality in laying hens as the environmental temperature increases
Provedor de dados: 89
Autores: Pereira,DF; do Vale,MM; Zevolli,BR; Salgado,DD.
Layer mortality due to heat stress is an important economic loss for the producer. The aim of this study was to determine the mortality pattern of layers reared in the region of Bastos, SP, Brazil, according to external environment and bird age. Data mining technique were used based on monthly mortality records of hens in production, 135 poultry houses, from January 2004 to August 2008. The external environment was characterized according maximum and minimum temperatures, obtained monthly at the meteorological station CATI in the city of Tupã, SP, Brazil. Mortality was classified as normal (£ 1.2%) or high (&gt; 1.2%), considering the mortality limits mentioned in literature. Data mining technique produced a decision tree with nine levels and 23 leaves,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Data mining; Layer production; Mortality; Thermal comfort.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400008

Estimating the impact of environmental conditions on hatching results using multivariable analysis
Provedor de dados: 89
Autores: Nääs,IA; Gigli,ACS; Baracho,MS; Almeida Paz,ICL; Salgado,DD.
Hatching results are directly related to environmental and biological surroundings. This research study aimed at evaluating the influence of incubation environmental conditions on hatchability and one-day-old chickling quality of five production flocks using multivariable analysis tool. The experiment was carried out in a commercial hatchery located in the state of São Paulo, Brazil. Environmental variables such as dry bulb temperature, relative humidity, carbon dioxide concentration, and number of colony forming units of fungi were recorded inside a broiler multi-stage setter, a hatcher after eggs transference, and a chick-processing room. The homogeneity of parameter distribution among quadrants inside the setter, the hatcher, and the chick room was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chick; Chick quality; Hatchability; Hatchery; Incubation conditions.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400004

Estudo Comparativo de Sistemas de Bebedouros na Qualidade Microbiológica da Água Consumida por Frangos de Corte
Provedor de dados: 89
Autores: Valias,APGS; Silva,EN.
Dois sistemas de bebedouros utilizados na criação avícola, pendular e chupeta (nipple), foram estudados objetivando avaliar a qualidade microbiológica da água fornecida às aves, em relação à presença de coliformes totais e fecais, aeróbios mesófilos, bolores e leveduras. Realizaram-se coletas de água no primeiro, 14, 28 e 42 dias de idade, sendo os dias de amostragem divididos em três períodos, de acordo com o horário de limpeza dos bebedouros pendulares: primeira, antes da limpeza; segunda, logo após a limpeza e terceira, ao meio dia. Os bebedouros avaliados apresentaram índices de contaminação em relação ao NMP de coliformes fecais acima dos limites estabelecidos pela Portaria do MS-Brasil. As contagens para UFC de bolores e leveduras obtidas para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Água; Frango de corte; Bebedouro pendular; Nipple; Bebedouro chupeta; Qualidade microbiológica.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100009

Etiology and immunology of infectious bronchitis virus
Provedor de dados: 89
Autores: Caron,LF.
Infectious bronchitis virus (IBV) of chickens is currently one of the main diseases associated with respiratory syndrome in domestic poultry, as well as with losses related to egg production. The etiological agent is a coronavirus, which presents structural differences in the field, mainly in the S1 spike protein. The immune response against this virus is complicated by the few similarities among serotypes. Environmental and management factors, as well as the high mutation rate of the virus, render it difficult to control the disease and compromise the efficacy of the available vaccines. Bird immune system capacity to respond to challenges depend on the integrity of the mucosae, as an innate compartment, and on the generation of humoral and cell-mediated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken Bronchitis; Immune response; Vaccine.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200007

Europe: history, current situation and control measures for infectious bronchitis
Provedor de dados: 89
Autores: Jones,RC.
The emergence and nature of different strains of infectious bronchitis virus (IBV) in Europe are described. Infectious bronchitis (IB) is the most important endemic viral respiratory disease where highly pathogenic Newcastle disease and avian influenza are not present. IB was first described in the UK in 1948 and identified as Massachusetts type. In the 1970s and 80s new serotypes were reported in Holland and elsewhere and new vaccines were developed. The 1990s saw the emergence of the major variant commonly called 793B, again needing a new vaccine. Two novel types have been recognised since 2000, Italy 02 and QX. Italy 02 appears to be well controlled by the use of two different live vaccines (H120 and the 793B-related 4/91) while for QX, associated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Control; Chickens; Europe; Infectious bronchitis; Vaccine.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200009

Evaluacion de Mediciones Fisicas y de Ultrasonido para Estimaciones del Peso de la Pechuga
Provedor de dados: 89
Autores: Melo,JE; Castillo,JL; Mallo,G; Ciacciariello,M; Canet,Z; Miquel,MC.
El objetivo del presente trabajo fue evaluar la utilización de distintas mediciones como predictores del peso de la pechuga. En la experiencia 1 se utilizaron 32 pollos Anak y 32 pollos Ross, muestreados al azar de dos lotes de 400 animales de cada genotipo. A los 53 dias de edad se realizó la faena y una disección de cortes comerciales. Se tomaron los siguientes pesos: peso vivo (PV), de la canal (PC) y de la pechuga (Pch). Se calculó para el análisis la proporción de cada uno sobre el peso vivo (%PC y %Pch). También se midieron el largo y el ancho de la pechuga con calibre. Se observaron diferencias entre genotipos para PV, PC, %PC, Pch y %Pch (p &lt;0,05). Los animales de la línea Ross resultaron más pesados que los Anak, así coma su carcasa, pechuga y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pechuga; Predicción; Pollos parrilleros; Ultrasonido.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100003

Evaluating two systems of poultry production: conventional and free-range
Provedor de dados: 89
Autores: Lima,AMC; Nääs,IA.
The improvement in production technology was the major factor that lead Brazil to become the third largest poultry producer. The improvement was world´s based on the careful control of several aspects, including which nutrition and management (environment, health and rearing systems). Nowadays, the search for good welfare conditions is a global tendency in animal production. Concomitantly, an extensive production system of free-range broilers has been increasing in Brazil. This study evaluated in situ production indexes of two different commercial broiler productions, an intensive and conventional (farm A) and a semi-extensive free-range production (farm B), in order to assess the relationship between productivity and management. It was observed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Free-range broiler; Poultry meat; Welfare.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400004

Evaluation and Validation of the Six Housekeeping Genes for Normalizing Mrna Expression in the Ovarian Follicles and Several Tissues in Chicken
Provedor de dados: 89
Autores: Qin,N; Shan,X; Sun,X; Liswaniso,S; Chimbaka,IM; Xu,R.
ABSTRACT Expression of housekeeping genes is relatively constant in different tissues and cells by RT-qPCR analysis. Housekeeping genes (HGs) are usually utilized as the reference to evaluate and compare mRNA expression abundances of target genes in different cells or tissues sampled. However, the expression stabilities of different HGs in diverse samples may appear divergence. Currently, there is no exact reference data of HGs in hen ovarian follicular tissues during egg-laying period available yet. In this study, we detected the expression of 18SrRNA, ACTB, HOXC8, GAPDH, alpha-A, and alpha-D mRNA in the varied-size ovarian follicles (1-8 mm in diameter and F5), hearts, livers, spleens, lungs, and breast muscles of the laying hens by RT-qPCR, to analyze...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hen; Housekeeping gene; Ovarian follicle; Inner control.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300302

Evaluation of a commercial ELISA kit (IDEXX) to differentiate AI virus-infected poultry from AI-vaccinated poultry (DIVA)
Provedor de dados: 89
Autores: Talazadeh,F; Mayahi,M; Seifi,M; Pourmehdi,M.
Vaccination programs for the control of avian influenza (AI) in poultry have limitations due to the problem of differentiating between vaccinated and virus-infected birds. The use of AI vaccination in poultry would have greater worldwide acceptance if reliable tests that clearly discriminated between naturally infected and vaccinated-only animals (DIVA) were available. In this study, to differentiate avian influenza virus (AIV)-infected chickens vs. chickens immunized with inactivated avian influenza virus, a commercial ELISA Kit (IDEXX) was used. Using HI as the reference method, the sensitivity of the commercial ELISA kit was 100% and its specificity was 100%. In the present study, we demonstrated that, 3 weeks after infection or vaccination, sera from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian influenza virus (AIV); DIVA; Commercial ELISA.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200010

Evaluation of a Feed Plant Additive for Coocidiosis Control in Broilers Herbals for Coccidiosis Control
Provedor de dados: 89
Autores: Sánchez-Hernández,C; Castañeda-Gómez del Campo,JA; Trejo-Castro,L; Mendoza-Martínez,GD; Gloria-Trujillo,A.
ABSTRACT Coccidiosis negatively impacts health and productive performance in broilers. Anticoccidial resistance has prompted alternatives to prevent and control this disease. Therefore, the objective of this study was to evaluate a plant feed additive consisting of Acacia concinna containing saponins (Peptasan®) and compare its effectiveness with salinomycin in terms of performance of broilers challenged with Eimeria. In the first experiment, 300 Ross chicks (1 day old) were randomly distributed into a negative (uninfected and untreated), and positive control group (infected and untreated), and three levels of dietary Peptasan® (500, 750 and 1000 ppm). In the second experiment, the same number of chicks were distributed in two control groups (negative and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acacia concinna; Broiler chick; Eimeria; Peptasan®; Salinomycin.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100324

Evaluation of a Probiotic and a Competitive Exclusion Product Inoculated In Ovo on Broiler Chickens Challenged with Salmonella Heidelberg
Provedor de dados: 89
Autores: Silva,IGO; Vellano,IHB; Moraes,AC; Lee,IM; Alvarenga,B; Milbradt,EL; Hataka,A; Okamoto,AS; Andreatti Filho,RL.
ABSTRACT The present study evaluated a probiotic and a competitive exclusion product injected in ovo on day 18 of incubation together with Marek's disease vaccine in eggs of 56-week-old broiler breeders. Three experiments were carried out. The first trial evaluated the effect of treatments on hatchability, cecal colonization of Salmonella Heidelberg (SH), and intestinal mucosa immunity (immunoglobulin A levels in the intestinal fluid). The second trial evaluated the viability of the microorganisms in the products inoculated in a solution containing diluent and Marek's disease vaccine. The third trial evaluated the colonization of the cecal microbiota in non-challenged chickens during first four days of life by culturing cecal samples under aerobic and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickens; Competitive exclusion; In-ovo inoculation; Probiotic; Salmonella Heidelberg.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100019

Evaluation of a radiographic method to detect tibial dyschondroplasia lesions in broilers
Provedor de dados: 89
Autores: Pelicia,K; Aparecido Jr,IM; Garcia,EA; Molino,AB; Santos,GC; Berto,DA; Vieira Filho,JA; Murakami,ESM; Montenegro,AT; Silva,AM.
This study aimed at developing radiographic techniques for the early detection of dyschondroplastic lesions in the tibia of broilers. The experiment was carried out at the facilities of UNIFOR/MG and Formiga and UNIFENAS/ Alfenas with 420 one-day-old male Cobb broilers. At 20 days of age, all birds were radiographed and identified with an alpha-numeric metal ring in the right leg. At 40 days of age, 42 broilers previously selected as a function of bone mineral density and lesion thickness scores were again radiographed and scored, and then sacrificed. Their right tibia was removed for gross and histological examination of the growth plate. The results showed that radiographic techniques are correlated with gross and histological examination and that there...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Histology; Gross examination; Radio-diagnosis; Tibia.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200007

Evaluation of Aluminum Chloride As an Effective Short-Term Solution for Reducing Odor - Causing Volatile Fatty Acids in Duck Litter
Provedor de dados: 89
Autores: Chung,TH; Park,JH; Kim,CM; Choi,IH.
ABSTRACT This study evaluated the effects of aluminum chloride (AlCl3) on pH and volatile fatty acid levels in duck litter over the course of a three-week experimental period. Ninety one-day-old Pekin ducks (45 males and 45 females) were distributed into three treatments with three replicates each (10 ducks per replicate) using a completely randomized design. Two treatments were top-dressing duck litter with thin layers (1-2 cm) of 50 g or 100 g of AlCl3 per kg of litter, respectively; the control group received no litter treatment. Although no significant differences in propionic acid levels (p&gt;0.05) were observed in any of the treatments, overall pH values for the 50 g and 100 g AlCl3 treatments were both lower (p&lt;0.05) than those of the control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aluminum chloride; PH; Volatile fatty acids; Duck litter.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300545

Evaluation of Anherbal Compound, a Commercial Probiotic, and an Antibiotic Growth Promoter on the Performance, Intestinal Bacterial Population, Antibody Titers, and Morphology of the Jejunum and Ileum of broilers
Provedor de dados: 89
Autores: Hedayati,M; Manafi,M.
ABSTRACT The current study was conducted to examine the effects of an herbal compound, a probiotic and an antibiotic growth promoter (AGP) on the performance, intestinal bacterial population, antibody titers, and morphology of the jejunum and ileum of broilers. A number of 240 male Ross 308 broilers were distributed into four treatments, with five replicates of 12 bird each. The experimental period was 42 days. Treatments includes: 1) basal diet; 2) basal diet supplemented with an AGP (phospho-flavomycin at 450 mg/kg of diet); 3) basal diet supplemented with a Lactobacillus-containing probiotic (250 mg/kg of diet); and 4) basal diet supplemented with an herbal compound (containing thyme, oregano, chamomile, and peppermint essential oils at 1 g/kg of diet)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibody titers; Broilers; Herbal compound; Intestinal morphology; Probiotic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200305

Evaluation of babassu meal in feed for layer hens during the growth phase
Provedor de dados: 89
Autores: Carneiro,MIF; Sakomura,NK; Malheiros,EB; Araújo,JA; Silva,EP da; Kawauchi,IM; Fernandes,JBK; Sousa,JRST de.
Studies were conducted to evaluate the nutritional value and inclusion levels of babassu meal (BM) in the diet of grower layer pullets in substitution to wheat meal. Digestibility, metabolism and growth trials were conducted. Twelve cecectomized roosters were used in the digestibility assay to determine the coefficients of standardized digestibility of amino acids (CSDAA). The metabolism trial was conducted with 30 adult roosters to determine the apparent metabolizable energy corrected for nitrogen (AMEn) of BM. A growth trial was performed to determine replacement levels of wheat midds by BM diet using 360 six-week-old commercial layer pullets. BM was included at the 0, 75 and 150 g/kg of BM, during grower and development rearing phases, respectively....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Nutritional composition; Digestibility; Performance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200011

Evaluation of Comparative Effect of Feed Additive of Allium Sativum and Zingeber Officinale on Bird Growth and Histomorphometric Characteristics of Small Intestine in Broilers
Provedor de dados: 89
Autores: Javid,MA; Abbas,G; Waqas,MY; Basit,MA; Asif,M; Akhtar,MS; Masood,S; Saleem,MU; Qamar,SH; Kiani,FA.
ABSTRACT The present study was conducted to evaluate the effects of supplementation of garlic, ginger in the diets of broiler chickens and assessment in terms of feed intake, growth performance and economics of feeding. The results showed that groups supplemented with 0.5% garlic powder and 0.5% ginger powder has shown significant effects on body weight as compared to the control group at day 28. Groups supplemented with 0.5% garlic powder and 0.5% ginger powder show significant increase in body weight than the groups supplemented with 0.25% garlic powder and 0.25% ginger powder. Between different supplemented groups, villus length and width of duodenum and jejunum of birds served with 0.5% garlic powder and 0.5% ginger powder is significantly higher than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ginger; Garlic; Bird performance; Histomorphometry; Small intestine.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200347

Evaluation of Dietary Glycerin Inclusion During Different Broiler Rearing Phases
Provedor de dados: 89
Autores: Freitas,LW; Menten,JFM; Zavarize,KC; Pereira,R; Romano,GG; Lima,MB; Dias,CTS.
ABSTRACT The objective of this study was to evaluate the effect of the dietary addition of different levels of glycerin on the performance, litter moisture, pododermatitis incidence, and carcass and parts yield of broilers. In total, 1,610 broilers were reared in 35 pens with 46 birds each. A completely randomized experimental design, with five treatments with seven replicates was applied. The experimental treatments were: T1: control diet; T2: dietary inclusion of 5% glycerin from 1-42 days of age; T3: dietary inclusion of 10% glycerin from 1-42 days of age; T4: dietary inclusion of 5% glycerin from 7-42 days of age; T5: dietary inclusion of 10% glycerin from 7-42 days of age. The diets containing glycerin fed since the pre-starter period improved broiler...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuff; Biodiesel; Broiler litter nutrition; Pododermatitis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500091

Evaluation of different digestible lysine levels for male broilers during the period of 18 to 40 days of age
Provedor de dados: 89
Autores: Carlos,TCF; Marino,CT; Silva,NVP da; Barbosa,LCGS; Reis,RN; Muramatsu,K; Araújo,CS da S; Araújo,LF.
A total of 1.500 male Cobb 500 broilers were used to determine the optimal digestible lysine level for 18 to 40-day-old broilers. The experimental period started when broilers were 18 days old and had an initial average weight of 737 ± 20 g. A completely randomized experimental design was applied, with five lysine levels, totaling five treatments with 10 replicates of 30 birds each. The experimental diets contained equal energy and protein levels, and 0.86, 0.95, 1.04, 1.13, and 1.22% digestible lysine. The following parameters were evaluated: average body weight at 40 days of age, daily weight gain, daily feed intake, feed conversion ratio, carcass yield and parts yield, and abdominal fat percentage. There was a quadratic effect (p&lt;0.05) of digestible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Poultry production; Performance; Ideal protein; Parts yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100012

Evaluation of different pre-slaughter light intensities and fasting duration in broilers
Provedor de dados: 89
Autores: Ramão,IB; Nunes,RV; Bruno,LDG; Tsutsumi,CY; Silva,WTM; Pozza,MSS.
The aim of this study was to determine the effects of different levels of light intensity (0, 5 or 20 lx) and different pre-slaughter feed fasting duration (3, 6, 9, 12 and 15 hours) on the parameters body weight loss, carcass yield, commercial cuts yield, water carcass retention, bacterial counts and breast meat pH. A number of 72 broiler chickens at 45 days of age (Cobb 500 strain) was distributed in three chambers, in a total of 24 broilers per chamber. The results showed that feed fasting significantly influenced (p&lt;0.05) body weight losswhen broilers were submitted to 9 hours of fasting. Broilers kept in the chamber with 0 lx presented higher body weight loss compared with other light intensities. The results showed an increase in carcass yield...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial counts; Carcass yield; Feed fasting; Light intensity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400003

Evaluation of Disinfectants Used in Pre-Chilling water Tanks of Poultry Processing Plants
Provedor de dados: 89
Autores: Guastalli,BHL; Batista,DFA; Souza,AIS; Guastalli,EAL; Lopes,PD; Almeida,AM; Prette,N; Barbosa,FO; Stipp,DT; Freitas Neto,OC.
ABSTRACT In poultry processing plants, disinfectants are often added to pre-chilling water tanks to reduce microbial contamination. The present study aimed at evaluating the effect of five disinfectants (acidified sodium chlorite, alkyl dimethyl benzyl ammonium chloride, chlorine dioxide, peracetic acid, and sodium hypochlorite) on the populations of food quality indicator microorganisms and on Salmonella Enteritidis (SE) in the presence and absence of organic matter. The results showed that chlorine dioxide and sodium hypochlorite did not reduce microbial carcass counts. On the other hand, acidified sodium chlorite, alkyl dimethyl benzyl ammonium chloride and peracetic acid reduced total and fecal coliform counts. Peracetic acid reduced the number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler carcasses; Disinfectant; Indicator microorganisms; Pre-chilling tank; Salmonella Enteritidis.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200217

Evaluation of Free-Range broilers using the welfare quality® protocol
Provedor de dados: 89
Autores: Sans,ECO; Federici,JF; Dahlke,F; Molento,CFM.
Scientific information on the welfare of broilers reared in alternative systems is scarce. The objective of this study was to assess the welfare of free-range broilers using the Welfare Quality® protocol. Free-range broilers reared in ten farms were observed, and measures were made in broilers of five of these farms. The collected data were transformed into scores (0-100), with higher scores indicating better welfare, except for emotional states. Prevalence percentages were calculated for the remaining data. Median (min-max) scores were 81 (63-98) for lameness, 93 (83-99) for hock burn on the farm, 100 (95-100) for plumage cleanliness, 35 (8-70) for podermatitis on the farm, 56 (26-88) for density, 53 (20-53) for dust, 34 (14-67) for litter quality, 93...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feelings; Free range; Protocol; Scores.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300011

Evaluation of genetic divergence among lines of laying hens using cluster analysis
Provedor de dados: 89
Autores: Barbosa,L; Regazzi,AJ; Lopes,PS; Breda,FC; Sarmento,JLR; Torres,RA; Torres Filho,RA.
Cluster analysis was used to investigate the genetic divergence among five lines of laying hens. The following traits were evaluated: body weight at 40, 48 and 56 weeks of age; egg weight at 40, 44, 52 and 60 weeks of age; and laying rate from 40 to 60 weeks of age. Three groups were formed when data were analyzed by the single-linkage hierarchical method using squared Mahalanobis distance (D²) as dissimilarity measures: one group comprised lines 3 and 5, the second group line 1, and the third group comprised lines 2 and 4. Using Tocher's optimization method, only two groups were formed: one group comprised lines 3, 5 and 1, and the second comprised lines 2 and 4. This evidences the disagreement between the methods over the evaluation of genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hens; Mahalanobis distance; Single linkage; Tocher's optimization method.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200003

Evaluation of glycerin as preserving agent of chicken serum for plate agglutination test
Provedor de dados: 89
Autores: Freitas,ES de; Soldá,A; Calegari,DL; Munaretto,FC; Dietrich,GF; Back,A.
Serum is widely used for the purpose of monitoring and diagnosis support for most of poultry diseases. In the case of the serum plate agglutination test (SPA), commonly used to detect antibodies for Salmonella Pullorum (SP), Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS), serum cannot be frozen because it may result in false positive. Without freezing, serum can last only for a few days. In this experiment, glycerin was evaluated as a serum preservering agent. About 50 samples for each disease and analyzed by SPA test previously were separated. Glycerin was added to serum from commercial chickens, with and without antibodies for SP, MG and MS, in the proportion of 1:1 (serum:glycerin) and kept at refrigerated conditions (2 to 8 ºC). For four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seroagglutination; Glycerol; Preservation; Refrigeration; Shelf life.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300015

Evaluation of Incubation Yield, Vaccine Response, and Performance of Broilers Submitted to In-Ovo Vaccination at Different Embryonic Ages
Provedor de dados: 89
Autores: Fernandes,JIM; Prokoski,K; Oliveira,BC; Oro,CS; Oro,PJ; Fernandes,NLM.
ABSTRACT The aim of this study was to evaluate the effects of in-ovo vaccination on different incubation days of broiler embryos derived from young and old breeders on incubation indexes, vaccine response, and broiler performance. A number of 20,160 fertile eggs was distributed according to a completely randomized design in a 4 x 2 factorial arrangement (in-ovo vaccination on 16, 17, 18, or 19 days of incubation, and breeders of 31 or 52 weeks of age), totaling eight treatments with 15 replicates of 168 eggs each. Vaccination procedures and vaccines (strains and doses) were those routinely applied in commercial hatcheries. After hatch, 960 male chicks were housed and distributed according to the same experimental design previously applied in the hatchery....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibody titers; Breeder age; Hatching; Viral vaccines.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600055

Evaluation of induced molting methods on the livability and reproductive system regression of Japanese quails (Coturnix japonica)
Provedor de dados: 89
Autores: Teixeira,RSC; Cardoso,WM; Nogueira,GC; Câmara,SR; Romao,JM; Siqueira,AA; Sampaio,FAC; Moraes,TGV; Campello,CC; Buxade,CC.
This study aimed at evaluating the alternative method of zinc oxide and fasting to induce molt in Japanese quails. A total number of 190 48-week-old quails was used. They were at end of laying cycle, and presented low egg production. Quails molted by zinc oxide (Z) were fed a diet containing 25,000 ppm of zinc oxide, and received water ad libitum. Quails treated by fasting (F) received no feed and a day of water restriction. The treatment period was determined by the experimental level of body weight loss (BWL). Birds were submitted to different levels of BWL in order to analyze reproductive system regression (ovary + oviduct), and livability. The following groups were established according to their BWL: Control (untreated quails); F25 (25% BWL by F); F35...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forced molting; Ovary; Oviduct; Quail; Zinc oxide.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200002

Evaluation of Meat and Egg Traits of Beijing-you Chickens Rotationally Grazing on Chicory Pasture in a Chestnut Forest
Provedor de dados: 89
Autores: Meng,L; Mao,P; Guo,Q; Tian,X.
ABSTRACT Barn and cage-fed chickens have presented several problems, such as high rates of infectious disease and consequent antibiotic abuse, poorer chicken health and welfare, and often poorer meat and egg quality compared with free-range chickens. The poultry agroforestry system is becoming increasingly popular in many poultry farms nowadays. In this study, to evaluate the contribution of poultry agroforestry system to enhance some meat and egg traits of Beijing-you chickens, some indexes of meat and egg qualities, some indexes of slaughter traits, and the feed conversion efficiency were investigated in rotational grazing Beijing-you chickens on chicory (Cichorium intybus L.) pasture (CGRG group) and only free-ranging chickens on bare land without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beijing-you chickens; Chicory; Rotational grazing; Meat and egg traits; Poultry agroforestry system.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500001

Evaluation of nutrient excretion and retention in broilers submitted to different nutritional strategies
Provedor de dados: 89
Autores: Graña,AL; Tavernari,FC; Lelis,GR; Albino,LFT; Rostagno,HS; Gomes,PC.
An experiment was carried out to evaluate the effects of different nutritional strategies on nitrogen (N), phosphorus (P) and calcium (Ca) balance and on copper (Cu), manganese (Mn) and zinc (Zn) excretion in broilers during the periods of 1 to 21 days and 1 to 46 days of age. Four hundred male Cobb-500 broilers were used. A randomized block experimental design was applied, including five treatments with eight replicates of 10 birds each. A five-phase feeding program was adopted (1-8, 9-21, 22-33, 34-40 and 41-46 days of age). Treatments consisted of a control diet (C) with typical protein level and low amino acid supplementation; a reduced-protein diet supplemented with synthetic amino acids formulated on ideal protein concept (IP); C with phytase (C+PHY)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzyme; Phosphorus; Organic trace minerals; Ideal protein.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200013

Evaluation of Physiological Parameters of Broilers with Dorsal Cranial Myopathy
Provedor de dados: 89
Autores: Amaral,PC; Zimermann,C; Santos,LR; Noro,M; Prá,MD; Pilotto,F; Rodrigues,LB; Dickel,EL.
ABSTRACT There are several causes of carcass condemnation in poultry processing plants, including dorsal cranial myopathy (DCM), in which the anterior latissimus dorsi (ALD) muscle is affected. DCM etiology has not been elucidated yet, but this lesion impairs the visual quality of carcasses and causes economic losses due to downgrading and condemnation. The effects of this lesion on the systemic health of broilers are still unknown. In this context, the objective of this study was to evaluate muscle injury and systemic health indicators in broilers presenting or not DCM. The following parameters were evaluated: complete blood count (CBC), total protein, albumin, globulin, cholesterol, lactate, and glucose serum levels, aspartate aminotransferase (AST) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspartate aminotransferase; Complete blood count; Creatine kinase; Lactate; Muscle injury.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100069

Evaluation of Probiotic Potential of Some Native Lactobacillus Strains on the Growth Performance and Serum Biochemical Parameters of Japanese Quails (Coturnix Coturnix Japonica) during Rearing Period
Provedor de dados: 89
Autores: Siadati,SA; Ebrahimnezhad,Y; Salehi Jouzani,Gh; Shayegh,J.
ABSTRACT The objective of the present study was to evaluate the probiotic effects of different concentrations of four selected native Lactobacillus strains on the growth performance and serum biochemical parameters of Japanese quails. A completely randomized design (CRD) was applied, including seven probiotic treatments with four replicates of 20 quails each, totaling 560 quails. Treatments were applied for five weeks. Four native Lactobacillus strains were anaerobically grown in a 10-L batch fermenter and lyophilized (1010 CFU/g). Treatments were as follows: T1: control (basal diet); T2: commercial probiotic CP1; T3: commercial probiotic CP2; and T4, T5, T6, and T7: four native strains added at levels of 50, 100, 150, and 200 g/ton diet, respectively. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth performance; Japanese quails; Native lactobacilli; Serum biochemical parameters.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300399

Evaluation of Quality and Safety Attributes of Slaughtered Versus Dead Chicken Birds Meat
Provedor de dados: 89
Autores: Sohaib,M; Zafar,MS; Arshad,MS; Nauman,K; Malhi,IY.
ABSTRACT The adulteration of dead chicken meat with halal meat is a concern in Pakistan that can harm safety of meat as well as religious beliefs of the Muslims. Accordingly, the present study was conducted to evaluate slaughtering methods (Islamic and decapitation) with dead chicken meat on composition, quality and safety attributes. Purposely, (n=24) birds were slaughtered and (n=12) dead birds samples were collected and subjected to proximate, mineral and quality analysis including pH, color (L*, a*, b*), cooking loss, texture, as well as thiobarbituric acid reactive substances (TBARS), peroxide value (PV), haem and non-haem iron. The results indicated ash content, minerals and oxidation parameters including TBARS, PV affected significantly (p&lt;0.05)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food Safety; Ritual Slaughter; Dead bird meat; Oxidative stability.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200307

Evaluation of recycled tiles and OSB ceiling materials in closed broiler house prototypes
Provedor de dados: 89
Autores: Cravo,JCM; Fiorelli,J; Lahr,FAR; Fonseca,R da; Cruz,VC da.
This study aimed at evaluating the thermal performance of a modular ceiling system for poultry houses. The reduced- and distorted-scale prototypes used ceiling modules made of reforested wood and were covered with recycled long-life package tiles. The following parameters were measured for 21 days: tile internal surface temperature (ST), globe temperature and humidity index (WBGT), and radiant heat load (RHL). Measurements were made at times of highest heat load (11:00 am, 13:00 pm, and 03:00 pm). Collected data were analyzed by "R" statistics software. Means were compared by multiple comparison test (Tukey) and linear regression was performed, both at 5% significance level. The results showed that the prototype with the ceiling was more efficient to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler house environment; Recycled tiles; Thermal comfort.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400002

Evaluation of strain, dietary energy level and stocking density on broiler feathering
Provedor de dados: 89
Autores: Moreira,J; Mendes,AA; Garcia,RG; Garcia,EA; Roça,RO; Nääs,IA; Dalanezi,JA; Pelícia,K.
This study evaluated the effects of strain, stocking density and dietary energy level on the feathering of broiler chickens. Four trials were carried out between September 2000 and April 2002. There were 10,685 broiler chicks from the strains Ross 308, Cobb 500, Hybro PG, Hubbard, MPK, and Isa Vedette. The bids were reared at stocking densities varying between 10 and 16 birds/m² and were given diets containing different metabolizable energy levels. Broiler feathering was evaluated either by atrributing scores from 1 to 10 to feather covering along the thigh and back (visual inspection), or by determining the percentage weight of the feathers at 28 and 42 days of age. Increasing rearing densities resulted in poorer feathering, mainly if 12 or 13 birds/m²...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Dietary energy; Feathering; Strain; Stocking density.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100002

Evaluation of the Chloride Requirement of the Broiler Breeder Hen
Provedor de dados: 89
Autores: Harl,JC; Harms,RH; Wilson,HR; Russel,GB.
Two experiments wore conducted to evaluate the chloride requirement of the broiler breeder hen. Experiments were conducted for a twelve-week period and seven experimental diets wore fed. The diets contained the following dietary chloride levels: 0. 040, 0. 047, 0. 054, 0.060, 0.073, 0.09g, and 0. 174%. Sodiam bicarbonate was used to maintain a constant level of sodium. Levels of dietary chloride below 0.054% reduced EF; EW, &amp;amp; EC (ED X (EW-shell wt). Also, the highest level of dietary chloride reduced all characteristics. Dietary chloride did not have a significant effect on body weight gain or fertility and hatchability of eggs. The Nationa/ Research Council (1994) suggests that the broller breeder hen have daily chloride intake of 185 milligrams...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder; Chloride; Egg production; Egg weight; Hatchability.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300007

Evaluation of the Direct and Enrichment Iso 10272 Methods for the Detection of Campylobacter Spp. in Chicken Meat
Provedor de dados: 89
Autores: Benetti,TM; Abrahão,WM; Ferro,ID; Macedo,REF; Oliveira,TCRM.
ABSTRACT In 2006, the International Organization for Standardization (ISO) published two standard protocols for the detection and enumeration of Campylobacter spp. in foods: the ISO 10272-2(direct method) and the ISO 10272-1 (enrichment method). The aim of this study was to compare the efficiency of these two methods in the detection of Campylobacter spp. and propose a modification in the enrichment method. Compared with the enrichment method, the direct method yielded a higher number of positive results for Campylobacter spp. and, consequently, presented higher sensitivity percentage. The isolation of Campylobacter spp. was more difficult when 10 mL of rinse was used in the enrichment method, which is currently recommended by the ISO protocol. Therefore,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter spp.; Detection; ISO 10272; Refrigerated chicken carcass.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100023

Evaluation of the Effect of Bacillus Subtilis and Pediococcus Acidilactici Mix on Serum Biochemistry, Growth Promotation of Body and Visceral Organs in Lohmann Brown Chicks
Provedor de dados: 89
Autores: Yu,W; Hao,X; Zhiyue,W; Haiming,Y; Lei,X.
ABSTRACT Recently the use of antibiotic growth promoter (AGPs) in poultry feed is banned in China, leading to the increasing demand for AGPs substitutes. Probiotics have been considered as a potential substitute. The purpose of this study was to evaluate the effects of probiotic on serum biochemistry, and growth promotion of body weight and visceral organs and in Lohmann Brown chicks aged 0 to 9 weeks. Five hundred and forty 1-day-old male chicks were randomly divided into three groups, with six replicates and 30 chicks in each replicate. The experiment was carried out over 70 days. Dietary treatments were: (1) basal diet alone (control group); (2) basal diet containing 0.1% probiotics (probiotic group); and (3) basal diet containing 0.01% zinc bacitracin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotic; Bacillus subtilis; Pediococcus acidilactici; Chick; Growth performance; Serum biochemical variables.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300304

Evaluation of the Relationship Between the Breeder’s Age, Breed and the Incubator Types on Quality and Animal Welfare in the Hatchery
Provedor de dados: 89
Autores: Oro,CS; De Souza,FEZ; Rodrigues,WC; Oro,JS; Guirro,ECBP.
ABSTRACT About 33.3% of chicken life is conditioned by the result of embryonic development. Therefore, understanding and improving the early phase of the broiler’s life is critical to guarantee their well-being. Thus, the objective of this research was to evaluate the relationship between the breeder’s age, breed and the incubator types on quality and animal welfare in the hatchery. The experimental design was completely randomized in a 2 x 2 x 3 factorial arrangement (incubator, breed and age), with 12 treatments and 6 replicates each. The eggs derived of Cobb 500 and Ross’s breeders at the beginning of the laying period, middle age and at the end of the laying period. It is concluded that the size of the eggs is related to the breeder’s age and breed,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryos; Hatch; Poultry.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300304

Evaluation of the technical and economic impacts of high-density broiler production in an integrated system
Provedor de dados: 89
Autores: Schmidt,GS.
This study included 35 farmers contracted by a broiler integrator company. Each farmer owned an average of seven poultry houses, housing six flocks per year per farmer, summing up 4.0 million broilers housed. Live performance was evaluated in flocks housed in three densities (D1&lt;12, 12&lt;D2&lt;14, and D3&gt;14 birds/m2), and included the following parameters: market age (MA), average flock weight (AFW), average daily gain (DWG), feed conversion ratio (FCR), livability (LB), production efficiency index (PEI) and carcass yield/m2 (CY). Production costs and gross margin were calculated with birds housed at two densities (11.5&lt;D4&lt;12.4 and 14.5&lt;D5&lt;15.5birds/m2), standardizing MA to 44 days. The economic evaluation included 15 farmers and 1.0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Density; Economic indices; Integration; Performance parameters.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300002

Evaluation of the Viral Interference between Lentogenic Newcastle Disease Virus (Lasota) and Avian Influenza Virus (H9N2) using Real-Time Reverse Transcription Polymerase Chain Reaction in SPF Chicken
Provedor de dados: 89
Autores: Fazel,P; Mehrabanpour,MJ.
ABSTRACT Lentogenic Newcastle disease virus (lNDV) such as Lasota strain and low pathogenicity avian influenza such as H9N2 virus are two of the most economically important viruses affecting poultry worldwide, and little attention in recent years has been paid to simultaneous infections in chickens with these two viruses for the reason that co-infection do occur but are not easily detected. In the present study, chickens were inoculated with lNDV (Lasota) and LPAIV (A/chicken/Tehran/ZMT-173/99(H9N2)) simultaneously or sequentially three days apart. Oropharyngeal and cloacal swabs were collected from chickens from 1 to 14 days after inoculation. RRT-PCR for AIV and NDV detection was performed. The rate of viral shedding was measured within 14 days. No...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Newcastle disease; Influenza virus (H9N2); Viral interference.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300537

Evaluation of yeast cell wall on the performance of broiles fed diets with or without mycotoxins
Provedor de dados: 89
Autores: Santin,E; Paulillo,AC; Nakagui,LSO; Alessi,AC; Maiorka,A.
This experiment aimed at evaluating the effects of the interactions between aflatoxin (500 or 250 ppb) and ochratoxin (500 or 250 ppb), and the possible benefits of adding yeast cell wall to prevent the effects of these mycotoxins in broiler chickens. Relative organ weight gain and live performance were evaluated at 21 and 42 days of age. Results indicated that at the levels of mycotoxins included in the experimental diets, ochratoxin reduced feed intake and body weight gain, and aflatoxin only affect feed intake of 21-day-old birds. No interaction was observed between aflatoxin and ochratoxin at the levels used in experimental study. Yeast cell wall did not significantly reduced the deleterious effects of ochratoxins. No significant differences were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aflatoxin; Ochratoxin; Yeast cell wall; Broilers; Performance.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400004

Exogenous enzymes in pre-starter broiler diets based on corn and soybean meal
Provedor de dados: 89
Autores: Lima,RB; Rabello,CBV; Lima,SBP de; Figueiredo-Lima,DF; Siqueira,JC de; Vilar da Silva,JH; Silva,EP da.
A fibrolytic enzyme complex was added to the pre-starter diet. Broiler chicks were randomly distributed into five treatments, consisting of a diet with no enzyme addition and four test diets supplemented with 100, 200, 300 and 400g/T of an enzyme complex. The dietary inclusion of the enzyme complex increased weight gain, and the dose of 300g/T improved weight gain and worsened feed conversion ratio.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Galactosidase; Galactomannanase; Glucanases; Xylanases.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300010

Experimental Coinfection of Chicken Anemia Virus and Mycoplasma gallisepticum Vaccine Strains in Broiler Chicks
Provedor de dados: 89
Autores: Prezotto,CF; Marin,SY; Araújo,TS; Barbosa,FO; Barrios,PR; Gomes,AM; Peconick,AP; Resende,M; Sousa,RV; Martins,NRS.
ABSTRACT This study aimed at determining the clinical and pathological effects of the coinfection of young SPF chickens with chicken anemia virus (CAV) and Mycoplasma gallisepticum (MG) vaccine strains. The clinical signs, gross and microscopic lesions were determined after the experimental coinfection broilers with a CAV genotype 1 vaccine strain given intraperitoneally on the first day of age and a MG F-strain vaccine given intranasally on the 8th day of age. The experimental groups included the negative control (group 1), a group infected with the MG F-strain vaccine (group 2), and a group coinfected with CAV and MG vaccines (group 3). Chicks were examined clinically and post mortem at 23 days of age, and gross and microscopic lesions of the trachea,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Chicken anemia virus; CAV; Mycoplasma gallisepticum; Coinfection.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300475

Experimental infection by Salmonella enterica subsp enterica serovar kottbus in day-old broiler chickens
Provedor de dados: 89
Autores: Ribeiro,SAM; Berchieri Jr,A; Orsi,MA; Mendonça,AO; Ferrati,AR.
The strain used in this work was a Salmonella enterica subsp enterica serovar Kottbus (6,8:e,h:1,5) isolated from imported day-old ducklings in Laboratório Nacional Agropecuário (LANAGRO/SP) of the Ministry of Agriculture of Brazil (MAPA). In view of the lack of information available about this Salmonella isolate and also because it was detected in day-old imported birds, this study was carried out to investigate the dissemination of S. Kottbus among newly hatched chicks. The birds were placed in three groups: one group of 20 birds received 0.1 mL of S. Kottbus culture containing 1.2 x 10(8) CFU/mL, the second group of 20 birds was inoculated with 1.2 x 10(5) CFU/mL and the third group of 10 birds was untreated (control group). Results were similar for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duck; Poultry; Salmonella Kottbus; Salmonellosis.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200007

Experimental infection of commercial layers using a Salmonella enterica serovar Gallinarum strain: Leukogram and serum acute-phase protein concentrations
Provedor de dados: 89
Autores: Garcia,KO; Berchieri-Júnior,A; Santana,AM; Freitas-Neto,OC; Fagliari,JJ.
The aim of the present study was to evaluate white blood cell counts and serum protein profiles of commercial layers experimentally infected with Salmonella Gallinarum (SG) in order to better understand the pathophysiology of the disease caused by this bacterium. 180 five-day-old commercial layers were divided into 3 groups (G); G1 and G2 received 0.2 mL of inoculate containing 3.3x10(8) CFU or 3.3x10(5) CFU SG resistant to nalidix acid (Nal r)/mL, respectively, directly into their crops. G3 group did not receive the inoculum. Birds were sacrificed 24 hours before (T1) and 24 hours after the infection (T2), and three (T3), five (T4), seven (T5), and ten (T6) days after the administration of the inoculum. White blood cell counts were carried out in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fowl typhoid; Serum protein profile; White blood cell count.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400008

Experimental infection of commercial layers with wild or attenuated Salmonella Gallinarum mutant strains: anatomic pathology, total blood cell count and serum protein levels
Provedor de dados: 89
Autores: Garcia,KO; Berchieri Jr.,A; Santana,AM; Alarcon,MFF; Freitas Neto,OC; Fagliari,JJ.
The aim of the present study was to comparatively evaluate hemogram, blood serum components and anatomopathologic alterations in commercial layers experimentally challenged with an attenuated vaccine candidate strain (SG∆cobS∆cbiA) and other two pathogenic strains (SGDcobS and SGNalr) of Gallinarum (SG). In total, 280 commercial layers were randomly divided into 4 groups (G1, G2, G3 and G4). At five days of age, birds from groups G1 received approximately 107 colony forming units (CFU) of SGDcobS; meanwhile birds from group G2 and G3 received the same dose of SGNalr and SG∆cobS∆cbiA, respectively. Birds from G4 were not infected. At 24 hours before (DBI) and 24 hours after (1 DAI), and three (3 DAI), five (5 DAI), seven (7 DAI) ten (10 DAI), and fifteen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute-phase proteins; Attenuation; Fowl typhoid; Histopathology; Leukogram.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200004

Experimental infection of one-day-old chicks with Salmonella Serotypes Previously isolated from poultry facilities, wild birds, and swine
Provedor de dados: 89
Autores: Sousa,E de; Werther,K; Berchieri Junior,A; Almeida,AM; Ardisson,FA; Silva,AC; Candioto,CG; Fernandes,SA.
In order to maintain the high production and export rates achieved by the Brazilian poultry industry, it is necessary to prevent and control certain disease agents, such as Salmonella spp. Using bacterial cultures, the aim of the present study was to investigate the prevalence of Salmonella spp. in specimens collected from broiler facilities. Local wild birds were also sampled, as well as the feces of swine housed on the poultry farm. After sample collection, the isolated serotypes were subsequently inoculated into broiler chicks to determine their effects. Positive samples were collected from the following locations in the poultry facilities: poultry litter (S. serotype 4,5,12:R:-; S. Heidelberg; S. Infantis), broiler feces (S. Heidelberg; S. serotype...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteriology; Disease of poultry; Diseases of wild birds.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400003

Experimental infection of Salmonella Enteritidis in quails submitted to forced molting by feed fasting
Provedor de dados: 89
Autores: Santos,ICL; Teixeira,RSC; Lopes,ES; Albuquerque,AH; Rocha e Silva,RC; Salles,RPR; Machado,DN; Horn,RV; Bezerra,WGA; Buxade,CC; Maciel,WC.
This study aimed at evaluating bacterial shedding, as detected in swabs, feces, and eggs of quails submitted to forced molting by feed fasting and experimentally infected with a Salmonella Enteritidis (SE) strain. In the experiment, 84 40-week-old Italian female quails were distributed in the following groups: FI (quails induced to molt by fasting and inoculated with Salmonella Enteritidis - SE); CI (quails fed with a laying diet and inoculated with SE); FNI (quails induced to molt by fasting and not inoculated with SE); and CNI (quails fed with a laying feed and not inoculated with SE). Feces, cloacal swabs, and eggs were collected on day 1, 3, 7 and 14 post-inoculation (dpi) and submitted to bacteriological analyses. All samples obtained from cloacal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inoculation; Swabs; Forced molting.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100031

Experimental Study on the Geometrical and Mechanical Properties of Goose Eggshells
Provedor de dados: 89
Autores: Zhang,J; Peng,W; Tang,W; Wang,M.
ABSTRACT This paper examined the properties of goose eggshells to determine possible areas of improvement in egg transport and storage. First, we measured goose egg sizes and performed statistical tests, and found that the major axis, minor axis, and egg-shape index presented normal distribution. Eggshell thickness first increased and then decreased from the blunt end to the sharp end. Second, the shape of individual goose eggshell was measured using a 3D scanner. Volume equation, surface equation, and contour function of goose eggshell shape were obtained, exhibiting a highly symmetrical structure. Finally, goose eggs were compressed along their major and minor axes between two plates. Breaking strength was highly dependent on the shape index. A crack was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goose egg; Shape index; Contour function; Breaking strength; Failure mode.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300455

EXPOSURE TO CARBONIC GAS ENRICHED ATMOSPHERE OR ELECTRICAL WATER BATH TO STUN OR KILL CHICKENS
Provedor de dados: 89
Autores: Nicolau,JP; Pinto,MF; Ponsano,EHG; Perri,SHV; Garcia Neto,M.
ABSTRACTThe objective of this study was to compare the effects of two methods (electrical water bath or carbonic gas atmosphere) for stunning or killing broiler chickens prior to bleeding on weight loss due to bleeding and meat traits. A completely randomized design with 2 x 2 factorial arrangement (electrical or gas system x stunning or killing) was applied. The time required for stunning and killing and the birds' behavior were evaluated for the gas exposure method. The birds killed by the electrical method retained more blood than those killed by the exposure to gas and, therefore, presented redder meat. The exposure to 10 to 15% CO2 atmosphere caused discomfort reactions in 100% of birds, and the intensity of reaction presented a wide variation: 35%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Broiler; Meat characteristic; Slaughter; Stunning.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300341

Expression of Myostatin (Mstn) and Myogenin (Myog) Genes in Zi And Rhine Goose and Their Correlation with Carcass Traits
Provedor de dados: 89
Autores: Zhao,XH; Li,MY; Xu,SS; Sun,JY; Liu,GJ.
ABSTRACT The aim of this study was to investigate the effects of Myostatin (MSTN) and MyoGenin (MyoG) on goose skeletal muscle growth. In this study, MSTN and MyoG gene expression in breast and leg muscle of Zi and Rhine goose were detected by Real-time Polymerase Chain Reaction (PCR), and the correlations between genes expression levels and carcass traits were investigated. The results showed that the breast muscle weight and breast muscle percentage of Rhine goose were significantly higher than Zi goose (p&lt;0.01). MSTN mRNA and MyoG mRNA expression in breast muscle of Zi goose were significantly higher than that of Rhine goose and the level of MSTN in leg muscle of Rhine was significantly higher than that of Zi goose (p&lt;0.01). There was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass traits; Goose; Genes; MRNA expression.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100306

Expression of Nerve Growth Factor (NGF) and Its Receptors TrkA and p75 in the Reproductive Organs of Laying Hens
Provedor de dados: 89
Autores: Shaoxia,PU; Changwei,QU; Zhi,LI; Yansen,LI; ChunMei,LI.
Abstract In order to investigate the expression levels of nerve growth factor (NGF) and its receptors (TrkA and p75) in prehierarchical follicles and oviducts of hens, five 130-day-old laying hens were examined by immunohistochemistry and RT-PCR analysis. NGF and its receptors were expressed in theca cells and granulosa cells of prehierarchical follicles, and they were also expressed in the epithelial cells of oviducts. The expression of the genes NGF, TrkA and p75 were significantly different in prehierarchical follicles (p&lt;0.05 or p&lt;0.01), and NGF and TrkA gene expression was significantly different in different parts of oviduct (p&lt;0.05 or p&lt;0.01). The expression of NGF and p75 mRNA levels was highest in large white follicle (LWF), as well as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: NGF; TrkA; P75; Prehierarchical follicle; Oviduct; Laying hen.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100187

Expression Pattern of Sulf1 and Sulf2 in Chicken Tissues and Characterization of Their Expression During Different Periods in Skeletal Muscle Satellite Cells
Provedor de dados: 89
Autores: He,L; Xu,H; Ye,F; Yu,H; Lu,Y; Yin,H; Zhao,X; Zhu,Q; Wang,Y.
ABSTRACT Heparan sulfate proteoglycans (HSPGs) are present on the cell surface and in the extracellular matrix in all metazoans. HSPGs interact with growth factors and receptors through heparan sulfate (HS) chains. The sulfation pattern of heparan sulfate chains influences signaling events mediated by heparan sulfate proteoglycans located on the cell surface. SULF1 and SULF2 are two endo-sulfatases that can cleave specific 6-O-sulfate groups within the heparan chains. To determine their possible roles in tissues and satellite cells in vitro, their expression pattern was examined in tissues from 40-day-old chickens and in satellite cells from the breast muscles of 1-week-old and 2-week-old chickens using RT-PCR and immunocytochemistry analyses. The SULF1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; SULF1; SULF2; Satellite cell; Immunocytochemistry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300307

Extended Spectrum Beta-Lactamase Production and Biofilm Formation in Salmonella Serovars Resistant to Antimicrobial Agents
Provedor de dados: 89
Autores: Mandelli,JZA; Ehrhardt,A; Manto,L; Borges,KA; Furian,TQ; Weber,B; Rodrigues,LB; Santos,LR.
ABSTRACT Antimicrobial resistance is a serious public health problem and Salmonella spp. is highly resistant to antimicrobial agents. Biofilms are important in the food industry due to their formation on products, utensils, and surfaces and the difficulty in their removal. The objective of this study was to assess extended spectrum beta-lactamase (ESBL) production, antimicrobial resistance, and biofilm production of Salmonella isolated from poultry slaughterhouses. Antimicrobial susceptibility was assessed by the disk diffusion assay and ESBL by double diffusion disk assay using the beta-lactamase inhibitor (amoxicillin+clavulanate). The antimicrobials tested were: ampicillin, amoxicillin+clavulanate, aztreonam, ceftazidime, cefotaxime, chloramphenicol,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilms; Drug resistance; ESBL; Salmonella.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200348

Extended-Spectrum Beta-Lactamase Producing Strains of Escherichia Coli Isolated from Avian Cellulitis Lesions
Provedor de dados: 89
Autores: Kanabata,B; Menck-Costa,MF; Souza,M; Justino,L; Rangel,IG; Kobayashi,RKT; Nakazato,G; Baptista,AAS.
ABSTRACT Avian cellulitis causes significant losses to the poultry industry. Avian-pathogenic Escherichia coli (APEC) is the etiological agent of that disease. This microorganism has zoonotic potential and may act as reservoir of antimicrobial-resistance genes. In this context, the production of extended-spectrum B-lactamase (ESBL) is one of the main antimicrobial resistance mechanisms. The objective of this study was to determine the production of ESBL in an Escherichia coli (E. coli) strain isolated from avian cellulitis lesions. Twenty-two E. Coli isolates were harvested from cellulitis lesions in chicken carcasses in a commercial processing plant. Isolates were then submitted to virulence genotypic profile (iutA, hlyF, iss, ironN, ompT) analysis,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: APEC; Avian cellulitis; ESBL; MDR; Virulence factor.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300326

Factors Affecting Broiler Production: A Meta-Analysis
Provedor de dados: 89
Autores: Baracho,MS; Nääs,IA; Lima,NDS; Cordeiro,AFS; Moura,DJ.
ABSTRACT The meta-analysis data were obtained from a survey of published articles over 15 years. The data were selected to classify the factors that impact broiler production and separated by influence aspects of animal production (thermal environment and other factors). The relevant data for each study were systematized, grouped and later tabulated and inserted into a database prepared in a spreadsheet. The variables used to analyze the thermal environment were temperature (comfort, high and low) and performance data (weight gain, feed intake, and feed conversion). The variables used for other features were ventilation (TER = tunnel + evaporative cooling, PP = positive pressure, NV = natural ventilation) and performance (feed conversion, live weight,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry production; Animal production; Broiler genetic strain; Rearing environment.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300318

Factors that impact the financial performance of broiler production in southern states of Paraná, Brazil
Provedor de dados: 89
Autores: Mendes,AS; Gudoski,DC; Cargnelutti,AF; Silva,EJ; Carvalho,EH; Morello,GM.
This study aimed at identifying the factors that affect the financial performance of broiler chicken production in Southwest of Paraná state in Brazil, as well as to study the relationship of these factors with the social-economic situation of poultry farmers. Data were obtained from a questionnaire applied to broiler chicken farmers between February and March, 2011. The questionnaire included 39 questions relative to farmer's age, family size, land possession, capital invested in broiler farming, gross income per flock, training and broiler farming experience, production size, credit needs, technical service, labor, production problems, and bird weight at slaughter. Data were submitted to descriptive statistical analysis. The relationship between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Costs; Economic efficiency; Poultry production; Social-economic status.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100016

Factors that Influence the Production, Environment, and Welfare of Broiler Chicken: A Systematic Review
Provedor de dados: 89
Autores: Baracho,MS; Nääs,IA; Betin,PS; Moura,DJ.
ABSTRACT The objective of the present study was to characterize the scientific production regarding the factors that influence broiler chicken production, and that were published from 2000 to 2015 in journals indexed in the database of Google Scholar, Scielo, and ScienceDirect. The research was done in the Thermal Comfort Laboratory at FEAGRI- UNICAMP, and the concept of the systematic review was applied. The research criterion was initially defined (the keywords) aiming to identify and evaluate the variables that describe the experimental characteristics and the animals. The primary keywords identified were: broiler chicken from commercial strains, broiler production, rearing conditions, thermal environment, air quality, acoustic environment, light...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Intensive rearing; Poultry housing.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300617

Fat-Soluble Vitamin Supplementation Levels in Diets for Laying Hens from 28 to 44 Weeks of Age
Provedor de dados: 89
Autores: Félix,DO; Silva,AS; Fialho,ATS; Oliveira,CJP; Brito,CO; Tavernari,FC; Ribeiro Jr,V; Rostagno,HS; Albino,LFT.
ABSTRACT This study aimed to examine the impact of levels of dietary supplementation with fat-soluble vitamins on the production performance and egg quality of laying hens. Three hundred Hy-Line White W-36 laying hens were evaluated from 28 to 44 weeks of age. The birds were allotted to one of six treatments in a randomized block design with 10 replicates with five birds each. Performance and egg quality parameters were evaluated in four 28-day periods. A corn and soybean meal-based basal diet was formulated so as to meet the nutritional requirements of the animals, with the exception of fat-soluble vitamins. The treatments consisted of dietary supplementation with 0%, 33.3%, 66.7%, 100.0%, 133.3% or 166.7% of fat-soluble vitamins (100% supplementation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg weight; Performance; White eggs.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300300

Fatty acid profile of eggs of semi-heavy layers fed feeds containing linseed oil
Provedor de dados: 89
Autores: Souza,JG; Costa,FGP; Queiroga,RCRE; Silva,JHV; Schuler,ARP; Goulart,CC.
The incorporation of polyunsaturated fatty acids in chicken eggs by adding oils to the diets has been extensively studied. This experiment aimed at evaluating possible changes in the fatty acid profile of the eggs of layers fed diets supplemented with linseed and soybean oils. The experiment was performed using 192 29 week-old laying hens, distributed in a completely randomized design, into six treatments with four replicates of eight birds each. Treatments consisted of a control diet (no vegetable oil) and diets including 2% of vegetable oil. Linseed oil replaced 0, 25, 50, 75, and 100% soybean oil in the diets, corresponding to 0.0, 0.5, 1.0, 1.5, and 2.0% of linseed oil in the diet. A pool of two egg yolks from each treatment was submitted to lipid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg; Enrichment; Fatty acids.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100006

Fatty-Acid composition of free-choice starter broiler diets
Provedor de dados: 89
Autores: Kessler,AM; Lubisco,DS; Vieira,MM; Ribeiro,AML; Penz Jr,AM.
Two experiments were carried out to evaluate the inclusion of vegetable oils with different fatty acid content in starter and pre-starter broiler diets. In Experiment I 480 1- to 9-day-old male Ross 308 broilers were fed diets containing corn oil (CO), acid corn oil (ACO), linseed oil (LO) or coconut fat (CoF). Chicks were distributed according to a factorial 2x2x2arrangement (2 free fatty acids - FFA ) x (2 n6:n3 ratios) x (2 medium-chain fatty acids levels - AGMC). Performance responses and dry matter (DMM), crude protein (CPM), and crude fat (CFM) metabolizability were evaluated. In Experiment II, 480 1- to 20-day-old male Ross 308 broilers were offered the free choice of 2 different diets: with no fat addition, or with 10% addition of the following fat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linseed oil; Metabolizable energy; N6:n3 ratio; Soybean oil; Voluntary intake.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100006

Feed restriction on performance and blood parameters of broilers fed diets with different sodium levels
Provedor de dados: 89
Autores: Junqueira,OM; Fonseca,LEC; Araújo,LF; Duarte,KF; Araújo,CS da S; Rodrigues,EAp.
The experiment was conducted to evaluate the effect of feed restriction and different sodium levels in the diet on the performance and hematological values (erythrocyte, hemoglobin, hematocrit, mean cell volume, mean cell hemoglobin, mean cell hemoglobin concentration and white blood cell) of broilers from 22 to 42 days of age. A completely randomized design was used in a 4 x 2 x 2 factorial (levels of sodium: 0.16%, 0.19%, 0.22% and 0.25%; with or without feed restriction; male and female), and two replicates of thirty broilers each. Sodium levels did not affect performance (p&gt;0.05). Feed restriction resulted in increased feed intake and affected weight gain and feed conversion negatively (p&lt;0.05). Better weight gain and feed conversion (p&lt;0.05)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood; Broilers; Feed restriction; Nutrition; Sodium; Sodium bicarbonate.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200003

Feeding behaviour of broiler chickens: a review on the biomechanical characteristics
Provedor de dados: 89
Autores: Neves,DP; Banhazi,TM; Nääs,IA.
Feed related costs are the main drivers of profitability of commercial poultry farms, and good nutrition is mainly responsible for the exceptional growth rate responses of current poultry species. So far, most research on the poultry feeding behaviour addresses the productivity indices and birds' physiological responses, but few studies have considered the biomechanical characteristics involved in this process. This paper aims to review biomechanical issues related to feed behaviour of domestic chickens to address some issues related to the feed used in commercial broiler chicken production, considering feed particle size, physical form and the impact of feeders during feeding. It is believed that the biomechanical evaluation might suggest a new way for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feedstuff; Feeding behaviour; Jaw apparatus; Motion.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200001

Feeding high-moisture corn grain silage to broilers fed alternative diets and maintained at different environmental temperatures
Provedor de dados: 89
Autores: Cruz-Polycarpo,VC; Sartori,JR; Gonçalves,JC; Pinheiro,DF; Madeira,LA; Polycarpo,GV; Zanetti,LH; Santos,TS; Pezzato,AC.
The effects of the dietary substitution of dry corn by high-moisture corn grain silage (HMCGS) were evaluated on the performance, nutrient digestibility and serum biochemical parameters of broilers reared in an alternative production system and submitted to different environmental temperatures. A total of 288 one-day-old male Cobb chicks were distributed according to a randomized block design in a 3x4 factorial arrangement: three environmental temperatures (hot, thermoneutral or cold) and four levels of HMCGS in substitution of dry corn (0%, 20%, 40% or 60%). The acid analysis showed that the evaluated HMCGS contained average percentage values of ethanol, lactic acid, and acetic acid (expressed in 100% of dry matter) of 0.7690, 2.7320 and 0.0249%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absorption; Alternative feeds; Poultry; Cholesterol; Metabolism; Triglycerides.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400017

Feeding management strategy for male broiler breeders and its effects on body weight, hatchability and fertility
Provedor de dados: 89
Autores: Silveira,MM; Freitas,AG de; Moraes,CA; Gomes,FS; Litz,FH; Martins,JMS; Fagundes,NS; Fernandes,EA.
The objective of the present study was to evaluate the supply of a specific-male diet on rooster body weight, hatchability, and fertility. Two diets were supplied during the egg production period: treatment 1, diet formulated for females and containing, in average, 2,830 kcal ME/kg and 15% CP; and treatment 2, diet specifically formulated for male broiler breeders, containing 2,750 kcal ME/kg and 13.5% CP. In the experiment, 26 flocks, with approximately 7,000 females and 840 males each, belonging to the same broiler breeder commercial strain, were distributed into 26 houses (1200m²) on the same farm, and submitted to the same management practices. Body weight was evaluated in 13 flocks per treatment and for five weeks (45, 50, 55, 60, 65), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrition; Poultry; Reproductive performance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400009

Feeding Programs for Broiler Breeders in the Start Phase
Provedor de dados: 89
Autores: Tremarin,J; Sakamoto,MI.
ABSTRACT The fast-growing Brazilian aviculture requires studies to improve zootechnical performance indexes for broiler breeders. The purpose of this study was to assess different feeding programs for broiler breeders on performance and development of digestive organs. A total of 48,000, 1d-old, Cobb 500 broiler breeders were divided into two sheds with 24,000 birds each. The experiment was randomized in block design, considering each shed a block, with 4 treatments and 6 replications per treatment with 2,000 birds in each. Treatments consisted of: Shed 1) T1 = starter feed; T2 = T1 + probiotics; Shed 2) T3 = pre-starter feed; T4 = T3 + probiotics. The productive performance characteristics (bird weight, weight gain, feed intake and feed conversion), the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pre-starter feed; Probiotics; Digestive tract.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500125

Feeding programs to induce molting in Japanese quails (Coturnix japonica)
Provedor de dados: 89
Autores: Faitarone,ABG; Garcia,EA; Pizzolante,CC; Molino,AB; Pelícia,K; Berto,DA.
The experiment was carried out in the experimental poultry house of the Research and Development Unit of Brotas of Agência Paulista de Tecnologia dos Agronegócios do Centro-Oeste, SP, Brazil. The objective of the study was to evaluate forced-molting methods and their effects on body weight, egg production, feed intake, and mortality, as well as bird performance during the second laying cycle. A total number of 400 65-week-old Japanese quails was distributed in a completely randomized experimental design into five treatments, with four replicates of 20 birds each. The following treatments were applied: T1= not submitted to forced molting, T2= 01 day of fasting + 13 days receiving 15g feed/bird/day (1F+R), T3= 02 days of fasting + 12 days receiving 15g...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Coturnix japonica; Egg production; Fasting.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100002

Femur Properties of Embryo in the Layer Hybrid and Pure Breeds
Provedor de dados: 89
Autores: Onbaşılar,EE; Güngör,ÖF; Demir,T; Erbay,FK Elibol; Kahraman,M; Taban,S; Çalık,A; Pirpanahi,M.
ABSTRACT Layer hybrids are more superior in the egg yield than pure breeds. But this superiority causes some problems in the bones during the production period. There are a lot of differences among genotypes in the production period that have been examined extensively, however, the differences throughout incubation period aren’t known yet. Thus, the objective of this study was to evaluate the differences in femur properties of pure breed and layer hybrid embryos during the incubation period. A total of 354 fresh hatching eggs were used from one hybrid (Lohman White) and two pure breeds (Denizli &amp; Gerze). The eggs were incubated. Hatching eggs from each genotype at the beginning of embryonic days (E) 19 and E21 were examined. At these embryonic ages, 12...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Layer; Pure breed; Hybrid; Embryo; Femur.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400805

Field evaluation of broiler gait score using different sampling methods
Provedor de dados: 89
Autores: Cordeiro,AFS; Nääs,IA; Salgado,DD.
Brazil is today the world's largest broiler meat exporter; however, in order to keep this position, it must comply with welfare regulations while maintaining low production costs. Locomotion problems restrain bird movements, limiting their access to drinking and feeding equipment, and therefore their survival and productivity. The objective of this study was to evaluate locomotion deficiency in broiler chickens reared under stressful temperature conditions using three different sampling methods of birds from three different ages. The experiment consisted in determining the gait score of 28, 35, 42 and 49-day-old broilers using three different known gait scoring methods: M1, birds were randomly selected, enclosed in a circle, and then stimulated to walk out...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Environmental rearing conditions; Locomotion deficiency.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300002

Firewood Ash as Calcium Source in the Initial Diet of Broiler Chickens
Provedor de dados: 89
Autores: Saccomani,APO; DE,Faria Filho; França,XAA; Dias,AN; Matos Júnior,JB; Faria,DE.
ABSTRACT This experiment aimed to evaluate the utilization of firewood ash as calcium source in the initial diet of broiler chickens. One hundred and twenty eight broiler chickens of Cobb-500® strain, from 1 to 21 days of age, were randomly distributed in four treatments with four repetitions of eight birds each, been four female and four male. The experimental diets were corn-soybean based, been isoenergetic and isonutrients, and had 0, 0.32, 0.98 and 1.27% of firewood ash as calcium source. The firewood ash utilized had 23.8% of calcium, 0.39% of total phosphorus, and 0.11% of sodium. The experimental treatments did not influence the feed intake, body weight, body weight gain, and food conversion from 1 to 7, 1 to 14, and 1 to 21 days of age. The tibia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuff; Bone development; Calcium source; Performance; Poultry.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400645

Fish Waste Oil in Laying Hens* Diets
Provedor de dados: 89
Autores: Brelaz,KCBTR; Cruz,FGG; Brasil,RJM; Silva,AF; Rufino,JPF; Costa,VR; Viana Filho,GB.
ABSTRACT The present study aimed to evaluate increasing levels of fish waste oil in laying hens diets on performance, egg quality, and sensory features of the eggs. 192 Hisex White laying hens with 29 weeks of age were used, with water and food ad libitum. The experimental design was completely randomized consisting of eight treatments corresponding to the inclusion levels of fish waste oil (0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5%) in the diets, with four replicates of six birds each. Data collected were subjected to polynomial regression at 5% of significance. Differences (p&lt;0.05) were observed in feed intake and egg mass. Feed intake increased until 2.50% of fish waste oil in the diets. Differences were not observed (p&gt;0.05) in all variables...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative food; Egg quality; Fish by-product; Flavor; Performance.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400305

Flavonoids and mannanoligosaccharides in broiler diets
Provedor de dados: 89
Autores: Batista,LS; Garcia,EA; Faitarone,ABG; Sherer,MR; Móri,C; Pelícia,K; Pizzolante,CC.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotic; Broilers; Flavonoids; Mannan oligosaccharides; Probiotic.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100005

Fluoroquinolones in industrial poultry production, bacterial resistance and food residues:a review
Provedor de dados: 89
Autores: Gouvêa,R; Santos,FF dos; Aquino,MHC de; Pereira VL de,A.
Fluoroquinolones are antimicrobial agents frequently used in poultry production and in human medicine. The use of such substances must comply with safety criteria, including withdrawal periods, doses, and treatment duration, as their misuse and abuse may cause bacterial resistance and the presence of residues in edible tissues. Consequently, the consumption of animal products with fluoroquinolone residues may result in the transmission of resistant bacteria. In addition, if residues are beyond the acceptable levels, fluoroquinolone active metabolites are harmful to human health. This article presents a review on the use of antimicrobials of the fluoroquinolone class in poultry production, focusing on the development of bacterial resistance to these drugs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluoroquinolones; Bacterial resistance; Food residues; Poultry products.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100001

Fontes de Sódio e Relação Sódio: Cloro para Frangos de Corte
Provedor de dados: 89
Autores: Fischer da Silva,AV; Flemming,JS; Borges,SB.
Foram utilizados 2.880 pintos de corte, para avaliar os efeitos de diferentes fontes de sódio (Na+) e relações sódio:cloro (Na+:Cl-) na ração. As aves receberam ração e água ad libtum. O delineamento experimental foi inteiramente casualizado, com quatro tratamentos e seis repetições. O ganho de peso, consumo de ração, conversão alimentar e mortalidade não foram influenciados (p&gt;0,05) pela substituição da fonte tradicional de Na e pelas diferentes relações Na:Cl. A umidade da cama foi afetada pela fonte e níveis de Na na ração. Os resultados mostraram que pode-se utilizar o NaHCO3 como fonte parcial à exigência de Na para frangos de corte de 1 a 47 dias de idade.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bicarbonato de sódio; Cama; Cloreto de sódio; Desempenho.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100008

Footpad Dermatitis in Broilers: Differences between Strains and Gender
Provedor de dados: 89
Autores: Martins,BB; Martins,MRFB; Mendes,AA; Fernandes,BCS; Aguiar,EF.
ABSTRACT Pododermatitis, also known as "bumblefoot", is an inflammatory lesion of the footpad. The objective of this study was to evaluate the influence of genetic strain and sex on the incidence of footpad lesions in broilers. The experiment was carried out at São Paulo State University, using 480 broilers distributed in a completely randomized experimental design in a 2X2 factorial arrangement (2 strains X2 sexes), with four replicates of 30 broilers each, totaling 16 experimental units. Feed intake, weight gain, feed conversion ratio, and livability were evaluated at 21, 35 and 42 days of age; production efficiency factor was determined at the end of the rearing period. On day 42, the footpads of 100 broilers were grossly examined and assigned a lesion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histopathological; Lesion score; Performance; Pododermatitis.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300461

Forced-Molting methods and their effects on the performance and egg quality of japanese quails (Coturnix japonica) in the second laying cycle
Provedor de dados: 89
Autores: Faitarone,ABG; Garcia,EA; Pizzolante,CC; Molino,AB; Pelícia,K; Berto,DA.
The experiment was carried out in the experimental poultry house of the Research and Development Unit of Brotas of Agência Paulista de Tecnologia dos Agronegócios do Centro-Oeste, SP, Brazil. The objective of the study was to evaluate the performance of Japanese quails submitted to forced molting aiming at optimizing the use of the same quail flock by promoting a second laying cycle. A total number of 400 67-day-old Japanese quails in lay, previously submitted to 14 days of forced molting, was distributed in a completely randomized experimental design into five treatments (T1= not submitted to forced molting, T2= 03 days of fasting + fed ad libitum, T3= 01 days of fasting + 13 days of feed restriction, T4= 02 days of fasting + 12 days of feed restriction,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Feeding management; Feed restriction; Poultry.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100008

Foundation and perspectives of the use of plant extracts as performance enhancers in broilers
Provedor de dados: 89
Autores: Rizzo,PV; Menten,JFM; Racanicci,AMC; Santarosa,J.
Feed is responsible for about 70% of broilers production costs, leading to an increasing number of studies on alternative dietary products that benefit bird performance and lower production costs. Since the 1950s, antimicrobial additives are the most frequently used performance enhancers in animal production and their positive results are observed even in high-challenge conditions. Since the 1990s, due to the ban of the use of some antibiotics as growth promoters and the growing trend of the public to consume natural products, plant extracts have been researched as alternatives to antibiotic growth promoters. The first study that evaluated the antibacterial activities of plant extracts was carried out in 1881; however, they started to be used as flavor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Performance; Plant extracts.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400001

Fowlpox: identification and adoption of prophylactic measures in backyard chickens in Bahia, Brazil
Provedor de dados: 89
Autores: Silva,PS da; Batinga,T de B; Sales,TS; Herval,EFG; Ramos,I; Maia,PCC; Fernandes,LMB.
This paper describes the identification of an outbreak of fowlpox in backyard chickens in two villages the state of Bahia, the intervention strategy to control the disease by adopting health measures and vaccination, as well as the impact of the intervention. The diagnosis was based in clinical and laboratory data. After the diagnosis was confirmed, control measures and the vaccination of non-infected birds were recommended. Finally, the impact of the intervention on re-incidence of the disease was evaluated. A number of 700 chickens was vaccinated, after which only 9% of the farmers reported the occurrence of new cases, and 70% informed the acquisition of new birds after vaccination. The information reported in this paper can be useful to design strategic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Backyard chickens; Control and prevention; Fowlpox.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200007

Full-Length Genomic Characterization of Chicken Anemia Virus in Turkey
Provedor de dados: 89
Autores: Aşkar,S.
ABSTRACT Chicken infectious anemia (CIA) is an immune-suppressive disease caused by chicken anemia virus (CAV). It is characterized by lymphoid atrophy, aplastic anemia, especially in chicks. In this study, full-length genomic characterization of CAV DNA from the broiler flocks in Turkey and phylogenetic analysis were aimed. In the study, CAV DNA were found positive for 37 (53%) flocks with PCR studies from thymus tissues of each 70 broiler flocks. And 17 purified CAV DNA PCR products from these 37 CAV isolates were full length sequenced with the NGS method (Illumina MiSeq). Also with the phylogenetic analyses, full length PCR products of 17 purified CAV isolates have been determined as 2298bp genome size and 99% similarity with each other. The highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Chicken Infectious Anemia; Phylogenetic analysis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300323

Gastrointestinal Parasites in Free-Range Chicken Raised under Extensive System from the Northeast of Brazil
Provedor de dados: 89
Autores: Saraiva,DJ; Campina,ACC; Gonçalves,FCS; Melo-Viegas,D; Santos,ACG; Nogueira,RMS; Costa,AP.
ABSTRACT Brazilian poultry production is growing, mainly due to the cost and benefit that chicken meat provides. The importance of free-range chickens and the susceptibility, to which they are exposed, makes it necessary to know about gastrointestinal parasites and the consequences that large infections can cause for them as such as weight loss. The present study aimed to determine the occurrence of gastrointestinal parasites in free-range hens raised in an extensive regime in the municipality of Santa Rita, state of Maranhão, Brazil. The studied population was composed of adult chickens (Gallus gallus domesticus) acquired from slaughterhouses in the region. The gastrointestinal organs of each chicken were separated and subsequently conditioned in flasks...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cestoda; Economics; Gallus gallus domesticus; Helminthe fauna; Nematoda.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100315

Gene Expression Patterns of Geese Expression Patterns of L-FABP, Spot 14, OB and APO A1 Genes in Different Tissues of Overfed and Control Geese
Provedor de dados: 89
Autores: Ma,YF; Chen,L; He,J; Tian,Y; Xu,XQ; Du,X; Lu,LZ.
ABSTRACT Ten-week-old Langde geese in similar body weight were randomly selected, four for overfeeding and four for routinly feeding. The abundance of liver fatty acid-binding protein (L-FABP), thyroid hormone-responsive (THRSP or Spot 14), obese (OB), and apolipoprotein A1 (Apo A1) genes in goose were detected by quantitative RT-PCR. L-FABP was higher expressed in liver and intestine than other tissues, but no expression was detected in the pancreas or brain. The other three genes were widely expressed in different tissues, OB was higher expressed in pancreas and abdominal fat, Spot 14 and Apo A1 was higher expressed in sebum and abdominal fat. Spot 14 and Apo A1 genes were up-regulated in overfed goose livers compared with that in the control. Thus, Spot...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Langde goose; Lipids related genes; Gene expression; Fatty liver.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200305

Gene Polymorphisms are Associated with Eggshell Ultrastructure Organization in Hens
Provedor de dados: 89
Autores: Wang,D; Liao,B; Zhang,Q; Liu,JS; Duan,Z; Hou,Z; Ning,Z.
ABSTRACT  Background:  Eggshell ultrastructure organization, including effective layer thickness, mammillary layer thickness, and average size of mammillary cones, is important for breeding and significantly influences eggshell mechanical properties. Several matrix proteins were known to be important in eggshell formation. However, the proteins and variations that determine eggshell ultrastructure organization are not known.  Results:  In this study, 17 single-nucleotide polymorphisms of three major genes in a hen population using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Five single-nucleotide polymorphisms with a very low minor allele frequency (&lt; 1%) were excluded from further analysis. The remaining 12...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calmodulin1; Eggshell ultrastructure organization; Ovalbumin; Ovocleidin-116.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100129

Genetic and Environmental Effects on Tonic Immobility Duration of Red-Winged Tinamou Applying Survival Analysis
Provedor de dados: 89
Autores: Hata,ME; Caetano,SL; Boleli,IC; Queiroz,SA.
ABSTRACT Fear behavioral studies provide knowledge on animal welfare, and fearful behaviors can be used as selection criteria of individuals adapted to intensive rearing system. The survival analysis methodology was applied to estimate tonic immobility (TI) duration, as an indicator of fear, of red-winged tinamous (Rhynchotus rufescens) reared in captivity and to determine if TI is genetically influenced. A number of 539 birds born between 2006 and 2010 were evaluated. The exploratory data analysis was performed using the Kaplan-Meier estimate (KM), and the covariates were then fit to a Cox model, considering month of observation nested within year of birth and body weight as fixed effects and the random effect of sire as frailty term. In order to predict...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Behavioral trait; Genetic parameters; Survival kit; Wild birds.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200287

Genetic Diversity and Phyletic Evolution of Eleven Chinese Indigenous and Three Commercial Chicken Breeds by mtDNA Sequences
Provedor de dados: 89
Autores: Yu,C; Qiu,M; Jiang,X; Zhang,Z; Du,H; Li,Q; Xia,B; Song,X; Hu,C; Xiong,X; Yang,L; Peng,H; Chen,J; Wang,Y; Yang,C.
ABSTRACT Chinese indigenous chicken breeds are geographically widespread, and a total of 116 indigenous chicken breeds are listed as Chinese national genetic resources. However, these indigenous chicken breeds are facing serious challenges as declining population and germplasm degeneration because lots of commercial chicken breeds had been introduced. In this study, the genetic variations of eleven Chinese indigenous chicken breeds of Sichuan province and three commercial chicken breeds were investigated based on the partial mitochondrial DNA D-loop of 487bp in length. 147 individuals from 14 breeds were examined and 34 haplotypes were observed. Genetic diversity analysis showed that the highest haplotype diversity level was found in Dahen Chicken (DH)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chinese chicken; Mitochondrial DNA; Cluster analysis; Gene flow; Phylogeny.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400308

Genetic Diversity of Mitochondrial DNA of Chinese Black-bone Chicken
Provedor de dados: 89
Autores: Zhang,T; Du,W; Lu,H; Wang,L.
ABSTRACT The black-bone chicken has special economic value in Chinese poultry breeds, which also are valued for the medicinal properties of their meat in traditional Chinese medicine. In order to protect the genetic resources of native black-bone chicken breeds, we analyzed the genetic diversity and matrilineal components of 64 mtDNA D-loop partial sequences from three native black-bone chicken breeds, together with reported 596 black-bone chicken mtDNA sequences from China, Japan, and Korea. A total of 108 haplotypes were observed from 73 variable sites. These domestic chicken mtDNA sequences could be assigned into seven clades (A-G). The results indicated that 71.97% of the black-bone haplotypes were related to the reference sequence that may originate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chinese Black-bone Chicken; MtDNA; D-loop region; Haplotype; Maternal origin.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300565

Genetic gain for body weight, feed conversion and carcass traits in selected broiler strains
Provedor de dados: 89
Autores: Schmidt,GS; Figueiredo,EAP; Ledur,MC.
The Brazilian Swine and Poultry Research Center (Embrapa Suínos e Aves) maintains a chicken breeding program for meat production since 1985. Two control lines (LLc and PPc) are maintained, whereas two male lines (TT and ZZ) and three female lines (PP, VV and KK) have been selected. This paper reports the genetic gain after 15 generations of combined selection (mass and independent culling levels) in order to develop the commercial broiler stocks Embrapa 021 and Embrapa 022. Selection pressure has been exerted on weight gain, carcass traits and fertility. In addition, female lines have also been selected for egg production, whereas males have been selected for feed efficiency since 1992. All lines have been selected for breast area instead of carcass traits...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Control line; Crossbreeding; Genetic gain; Meat production; Production; Selection.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100004

Genetic relatedness among wild, domestic and Brazilian fighting roosters
Provedor de dados: 89
Autores: Rodrigues,FP; Queiroz,SA; Duarte,JMB.
Except for the meat- and egg-type strains used in commercial poultry farms in Brazil, there are no scientific reports about the origin of birds from the genus Gallus that have been introduced in this country with domestication or fighting purposes. Therefore, the aim of this study was to identify the position of the Brazilian Game Bird in the phylogenetic tree of the genus Gallus by nucleotide sequence analysis of the mitochondrial DNA D-loop region. The results indicate that fighting roosters comprise two different clusters within the species Gallus gallus domesticus. One of the clusters is related to the wild ancestors, while the other one is more related to the birds raised by the poultry industry. In conclusion, Brazilian fighting roosters have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fighting roosters; Gallus gallus; Phylogenetic tree; Wild roosters.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200003

Genetic Similarities of Escherichia Coli Isolated from Different Substrates of the Broiler Production Chain
Provedor de dados: 89
Autores: Teles,PFS; Boiago,MM; Frigo,A; Rampazzo,L; Araújo,DN; Kich,JD; Rebelatto,R; Furian,TQ; Stefani,LM.
ABSTRACT Brazil is the largest exporter of chicken meat and poultry farming is one of the most important productive segments, despite major losses due to the bacterium Escherichia coli, which is also a zoonotic microorganism. The objetive of this study was to isolate E. coli and to evaluate its transmissibility potential from the field to chicken meat using the Pulsed Field Gel Electrophoresis (PFGE) technique. Environmental samples (poultry litter, soil and water) were collected from broiler farms located in the South of Brazil where the majority of the Brazilian poultry production occurs. In addition, chicken meat (gizzard, heart, drumette and tulip) samples were collected from local supermarkets. As results, 47.36% of the samples were positives for E....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment; Epidemiology; Microbiology; Public health; Pulsed field gel electrophoresis.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100308

Genomic variants of bacteriophages against Salmonella enterica serovar Enteritidis with potential application in the poultry industry
Provedor de dados: 89
Autores: Robeson,J; Retamales,J; Borie,C.
Salmonella enterica serovar Enteritidis (SE) is a prevalent gastrointestinal pathogen worldwide, threatening both animal and human health. In the latter, disease is associated to the consumption of SE-contaminated products from the poultry industry. The control of SE infection is largely based on the use of antibiotics and vaccines, but the use of lytic bacteriophages is re-emerging as an additional strategy for SE control. In fact, a number of recent reports point to the adequacy of bacteriophage as an efficient prophylactic or therapeutic countermeasure to SE infections. However, less attention has been focused on the basic biology of these bacteriophages. Here we report on three bacteriophages (f18, IF1 and EST2) that share a common viral particle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteriophages; Biocontrol; Salmonella Enteritidis.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300007

GLUTAMIC ACID IMPROVES BODY WEIGHT GAIN AND INTESTINAL MORPHOLOGY OF BROILER CHICKENS SUBMITTED TO HEAT STRESS
Provedor de dados: 89
Autores: Porto,ML; Givisiez,PEN; Saraiva,EP; Costa,FGP; Moreira Filho,ALB; Andrade,MFS; Brandão,PA; Guerra,RR.
ABSTRACTThe objective of this study was to evaluate the effects of 1% dietary glutamic acid on the body weight, intestinal morphometry, and anti-Newcastle antibody titers of broiler chickens submitted to heat stress. One-d-old male broiler chicks (n=120) were distributed according to a 2 x 2 factorial design with two environmental temperatures (thermoneutral or heat stress) and two diets (with 0 or 1% glutamic acid). Heat stress temperature was constantly maintained (24h/day) 5 ºC higher than the thermoneutral temperature. Diets supplied the nutritional requirements of broilers in the pre-starter (1 to 7d) and starter (8 to 21d) phases. Birds were vaccinated against Newcastle disease on d 7 via eye drop. On days 5, 10, 15, and 20, individual body weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Duodenum morphology; Environmental temperature; Humoral immunity; Heat stress; Performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300355

Glycerine derived from biodiesel production as a feedstuff for broiler diets
Provedor de dados: 89
Autores: Silva,CLS; Menten,JFM; Traldi,AB; Pereira,R; Zavarize,KC; Santarosa,J.
The performance, carcass traits, and litter humidity of broilers fed increasing levels of glycerine derived from biodiesel production were evaluated. In this experiment, 1,575 broilers were distributed according to a completely randomized experimental design into five treatments with seven replicates of 45 birds each. Treatments consisted of a control diet and four diets containing 2.5, 5.0, 7.5, or 10% glycerine. The experimental diets contained equal nutritional levels and were based on corn, soybean meal and soybean oil. The glycerine included in the diets contained 83.4% glycerol, 1.18% sodium, and 208 ppm methanol, and a calculated energy value of 3,422 kcal AMEn/kg. Performance parameters (weight gain, feed intake, feed conversion ratio, live weight,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Broilers; Biodiesel; Performance; Glycerol.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300006

GOSSYPOL PROMOTES THE DEGENERATION OF CHICKEN OVARIAN FOLLICLES IN VITRO
Provedor de dados: 89
Autores: Gadelha,ICN; Lima,MA; Melo,MM; Soto-Blanco,B.
ABSTRACT Gossypol, a phenolic compound produced by the pigment glands of cotton, is known to affect male reproduction. In females, exposure to gossypol has been associated with interference with the estrous cycle and embryo development. In laying hens fed cottonseed, gossypol was found to reduce egg production and weight and to cause discoloration of the egg yolk and/or albumen. It is probable that gossypol directly affects ovarian follicles, but this has not been confirmed experimentally yet. Thus, the aim of the present study was to determine if gossypol affected cultivated ovarian follicles of the chicken. Ovarian follicles of adult female chickens were cultivated with different concentrations of gossypol (0, 5, 10 and 20 μg/mL) and classified according...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cottonseed; Female reproduction; Gossypol; Ovaries; Reproductive toxicology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300505

Granulometria do Milho em Rações de Crescimento de Frangos de Corte e seu Efeito no Desempenho e Metabolismo
Provedor de dados: 89
Autores: Ribeiro,AML; Magro,N; Penz Jr,AM.
Foram realizados dois experimentos para avaliar os efeitos da granulometria do milho das rações, expressa pelo diâmetro geométrico médio (DGM), 0,337; 0,574; 0,680; 0,778; 0,868 e 0,936mm, sobre o desempenho, o metabolismo energético e a morfologia intestinal (número e altura de vilosidades do duodeno) de frangos de corte machos, de 21 aos 42 dias de idade. No 1° experimento, partículas de 0,868 mm proporcionaram às aves maior consumo de ração, maior ganho de peso e melhor conversão alimentar. A altura das vilosidades intestinais não foi influenciada pelo DGM das dietas, mas aumentou com a idade das aves (21, 35 e 42 dias de idade). Não foi observado efeito da granulometria sobre a deposição de gordura abdominal ou sobre as proporções das partes da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Granulometria; Milho; Frangos de corte.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100006

Grape (Vitis Vinifera) Pomace Flour as Pigment Agent of Quail Eggs
Provedor de dados: 89
Autores: Fróes,HG; Jácome,IMTD; Tavares,RA; Garcia,RG; Domingues,CHF; Bevilaqua,TMS; Martinelli,M; Naas,IA; Borille,R.
ABSTRACT The aim of the study was to evaluate the effect of dietary grape pomace flour (GPF) inclusion on the performance and egg quality of European quails (Coturnix coturnix coturnix) in lay. One hundred ninety-two (192), 42-day-old quails were distributed in a completely randomized design with four treatments (0, 2, 4 and 6% grape pomace flour inclusion) with six replicates of eight birds each. The performance parameters egg weight (g), average feed intake (g/bird), total feed intake (g/bird), egg production (%) and feed conversion ratio (kg/dozen) were evaluated, as well as egg quality traits Haugh unit, albumen weight (g), yolk weight (g), eggshell thickness (mm), egg specific gravity (g/cm3), and yolk pigmentation. There was no effect (p&gt;0.05) of...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Additives; Egg production; Egg quality; Haugh Unit; Natural pigment.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100183

Grapeseed Meal Used as Natural Antioxidant in High Fatty Acid Diets for Hubbard Broilers
Provedor de dados: 89
Autores: Turcu,RP; Olteanu,M; Criste,RD; Panaite,TD; Ropotă,M; Vlaicu,PA; Drăgotoiu,D.
ABSTRACT The 7-week feeding trial evaluated the effect of 2% grapeseed meal used as natural antioxidant in the diets for slow-growing Hubbard broiler chicks, aged 14 days. The chicks were weighed individually and assigned to two groups (C and E), with 40 chicks per group, housed under conditions of temperature, humidity and light regimen according to the hybrid management guide. The basal ingredients of the conventional diet were corn, wheat, gluten, soybean meal and 2% flaxseed meal, which is rich in polyunsaturated fatty acids. Compared to the control formulation, the experimental formulation included 2% grapeseed meal, both in the growing and finishing stages. The broilers had free access to feed and water. In the end of the feeding trial, blood samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grapeseed meal; Natural antioxidant; PUFA.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200313

Ground annatto seeds (Bixa orellana L.) in sorghum-based commercial layer diets and their effects on performance, egg quality, and yolk pigmentation
Provedor de dados: 89
Autores: Garcia,EA; Molino,AB; Gonçalves,HC; Junqueira,OM; Pelícia,K; Osera,RH; Duarte,KF.
Consumer demands for healthy foods have stimulated the research on the use of natural products in animal nutrition. Annatto can be used a pigmentation source to improve yolk color of commercial eggs. This study aimed at evaluating the effects of the inclusion of ground annatto seeds on the performance and egg quality of layers fed sorghum-based diets. A total of 336 40-w-old hens were distributed according to randomized blocks into seven treatments with six replicates of eight birds each. The following treatments were applied: T1- egg production feed based on corn and soybean meal; T2- egg production feed based on sorghum and soybean meal; T3, T4, T5, T6, and T7- egg production feed based on sorghum supplemented with 0.5, 1.0, 1.5, 2.0, and 2.5% ground...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative ingredients; Sorghum; Yolk pigmentation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400007

Growth and body nutrient deposition of two broiler commercial genetic lines
Provedor de dados: 89
Autores: Marcato,SM; Sakomura,NK; Munari,DP; Fernandes,JBK; Kawauchi,ÍM; Bonato,MA.
The objective of this work was to study growth and body nutrient deposition profiles of male and female Cobb and Ross broilers using Gompertz equations. A total number of 1,920 one- to 56-day-old broilers were used. A randomized experimental design in a factorial arrangement (2 strains x 2 sex), with 4 replicates of 120 birds each, was applied. Diets were formulated to supply the nutrient requirements recommended by the genetic companies. A sample of birds was weekly weighed and sacrificed after 24 hours fasting. Carcasses were de-feathered and weighed again. The parameters of the Gompertz equation for body weight and its components (water, ashes, protein, and fat) were estimated. An interaction (p&lt;0.05) between sex and breed was observed for mature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Broilers; Growth; Gompertz curves.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200007

Growth and deposition of body components of intermediate and high performance broilers
Provedor de dados: 89
Autores: Henn,JD; Bockor,L; Ribeiro,AML; Coldebella,A; Kessler,A de M.
The objectives of the present study were to determine the parameters of Gompertz equations and to determine curves and growth rate, feed intake and body component deposition, as well as allometric coefficients of body water, protein, and fat relative to live weight of male and female broilers of intermediate performance (C44) and high performance (Cobb-500) genetic strains. In total, 384 one-d-old chicks were distributed into four treatments: male Cobb 500, male C44, female Cobb 500, and female C44, with six replicates of 16 birds, according to a completely randomized experimental design. Average body weight, weight gain, and feed intake were weekly determined, and six birds, representing the average weight of each treatment, were sacrificed to determine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Gompertz curve; Growth rate; Cobb 500; C44.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300014

Growth Patterns of Two Chinese Native Goose Breeds
Provedor de dados: 89
Autores: Ibtisham,F; An,L; Li,T; Niu,Y; Xiao,M; Zhang,L; Jia,R.
ABSTRACT To study the development rules of Chinese native geese, two breeds, Shitou and Sichuan White geese were analyzed from 0 to 12 weeks of age. The growth curves were fitted with commonly used four kinds of nonlinear models (Logistic, Gompertz, Von Bertalanffy and Richards). The results showed that the growth curves were appropriately fitted with all four models but the Logistic and Richards both had the best fitting with growth curve (R2&gt;0.99). Analyzing the fitting parameters of the Logistic and Richards, we found that male Shitou had the highest adult body weight while Sichuan White female had the lowest weight. In Shitou breed, Shape parameter Predicted with Richards model was corresponded with Gompertz curve, while in Sichuan breed it was in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goose; Chinese native breeds; Body Weight; Growth Curve; Nonlinear models.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200203

Growth Performance and Fatty Acid Profiles of Broilers Given Diets Supplemented with Fermented Red Ginseng Marc Powder Combined with Red Koji
Provedor de dados: 89
Autores: Chung,TH; Choi,IH.
ABSTRACT In this study, 240 one-d-old Arbor Acres broiler chicks (160 males and 80 females) were randomly allocated in a completely randomized design with four treatments and four replicates. Broilers were fed from hatching to 28 d of age four diets: a basal diet (control), 2% red ginseng marc, 1% fermented red ginseng marc with red koji, and 2% liquid red ginseng. Growth performance and fatty acid profiles in broiler were evaluated. Supplementing diets with different types of red ginseng did have significant effects (p&lt;0.05) on initial body weight, due to differences in the birth weights of birds, including weight gain, and mortality. However, no significant differences between the treatments (p&gt;0.05) were found for final body weight, feed intake,...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Fermented red ginseng marc powder; Red koji; Red ginseng marc; Growth performance; Fatty acid.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400733

Growth Performance and Fatty Acid Profiles of Ducks Fed a Diet Supplemented with Aronia (Aronia Melanocarpa) Powder
Provedor de dados: 89
Autores: Lee,GD; Shin,JH; Choi,IH.
ABSTRACT The present study evaluated the effects of aronia powder on growth performance and fatty acid profiles of ducks. A total of 90 ducks (one-day-old pekin, 48 males and 42 females) were distributed according to a completely randomized design into two treatments (control and 1% aronia powder) with 3 replicates of 15 birds per pen for 42 d. Apart from the feed:gain ratio, the other growth performance parameters, including initial body weight, final body weight, weight gain, and feed intake, did not differ significantly between treatments (p&gt;0.05). In addition, there was no significant difference (p&gt;0.05) in fatty acid profiles between treatments. However, oleic acid (C18:1), linoleic acid (C18:2), and polyunsaturated fatty acid (PUFA) were...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Aronia powder; Growth performance; Fatty acid profiles.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200193

Growth Performance, Carcass Characteristics and Meat Quality of Griller-Type Broilers of Four Genetic Lines
Provedor de dados: 89
Autores: Barbosa Filho,JA; Almeida,M; Shimokomaki,M; Pinheiro,JW; Silva,CA; Michelan Filho,T; Bueno,FR; Oba,A.
ABSTRACT Griller-type chickens are broilers slaughtered between27and 29 days old weighing 1.3 to 1.5 kg and sold as a whole carcasses. The aim of the present study was to evaluate the growth performance, carcass traits, and meat quality of female broilers of four genetic lines reared for the production of griller-type chickens. A total of 960 broiler chicks was allotted in a randomized block design with four treatments and eight replicates of 30 birds per experimental plot. Each experimental treatment consisted of four different commercial lines, identified as A, B, C and D. The analyzed parameters were weight gain, feed intake, feed conversion ratio, livability, production efficiency index, carcass and cut yields, and meat quality according to breast meat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yield; Genetics; Griller-type; Growth performance; Meat quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100109

Growth Performance, Carcass Traits and Breast Meat Fatty Acids Profile of Helmeted Guinea Fowls (Numida meleagris) Fed Increasing Level of Linseed (Linum usitatissimum) and Pumpkin Seed (Cucurbita moschata) Meals
Provedor de dados: 89
Autores: Chiroque,G; Vásquez,G; Vásquez,E; Vásquez,E; Más,D; Betancur,C; Ruiz,C; Botello,A; Martínez,Y.
ABSTRACT This study was conducted to determine the effects of dietary inclusion with linseed and pumpkin seed meals on growth performance, carcass traits and breast meat fatty acids profile of helmeted guinea fowls. A total of 120 meat-type helmeted guinea fowl females of 12 weeks of age were fed with 0 (T0), 100 (T1) and 200 (T2) g/kg of linseed (LM) and pumpkin seed meals (PSM) for 56 days, in a completely randomized design with 10 replicates per treatment and four birds per replicate. The inclusion up to 200 g/kg of LM and PSM did not affect the livability, initial live weight and feed intake (p&gt;0.05). However, final live weight and feed:gain ratio improved significantly (p&lt;0.05). The T1 increased (p&lt;0.05) the carcass yield and the T2 improved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linseed; Pumpkin seed; Guinea fowl; Performance; Meat quality.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400665

Growth performance, carcass yield and intestinal microflora populations of broilers fed diets containing thepax and yogurt
Provedor de dados: 89
Autores: Boostani,A; Mahmoodian Fard,H R; Ashayerizadeh,A; Aminafshar,M.
The present study aimed at evaluating the effect of the probiotic thepax and yogurt (as probiotic) on the growth response and intestinal microflora results of broiler chickens. Two hundred forty day-old Ross 308 broilers were equally distributed into 12 floor pens and reared for 42 day. The treatments consisted of yogurt (10, 5 and 2.5% during starter, grower and finisher periods in the drinking water, respectively) and thepax (1000, 500, 250 g/ton-1 in the starter, grower and finisher diets, respectively), resulting three experimental diets and a control group. Each dietary treatment was fed ad-libitum to four replicate group of 20 birds at the beginning of rearing period. Birds and feed were weighed on days 21 and 42. The results of experiment indicate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ross 308; Probiotic; Carcass yield; E. coli.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100001

Growth Performance, Intestinal Morphology, Serum Biochemical and Hematological Parameters in Japanese quail (Coturnix japonica) Fed Supplemental L-Arginine
Provedor de dados: 89
Autores: Kheiri,F; Landy,N.
ABSTRACT This experiment was conducted to examine the effects of dietary L-arginine (Arg) supplementation on growth performance, intestinal morphology, serum biochemical and hematological parameters in meat-type quails. A total of one hundred and sixty 7-d-old male quail chicks were weighed and allocated to four treatment groups of four replicates, with 10 chicks/replicate. Four groups of quail chicks were fed basal diet containing 12.44 g lysine (Lys)/kg of diet (control), basal diet supplemented with 0.4, 1.21 and 1.84 g Arg/kg of diet (for Arg to Lys ratios of 100, 103, 109 and 114) for 28 days. The birds were fed diets from 7 to 38 d of age. Final body weight and feed:gain tended to improve by increasing Arg:Lys ratio to 109. Relative weight of spleen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arginine; Hematology; Meat-type quail; Performance; Serum biochemistry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300308

Growth Performance, Organ Weights and Some Blood Parameters of Replacement Laying Pullets Fed with Increasing Levels of Wheat Bran
Provedor de dados: 89
Autores: Martínez,Y; Carrión,Y; Rodríguez,R; Valdivié,M; Olmo,C; Betancur,C; Liu,G; Al-Dhabi,NA; Duraipandiyan,V.
ABSTRACTThis study was conducted to determine the growth performance, organ weights, and selected blood parameters of replacement laying pullets (development phase) fed increasing levels of wheat bran (WB). A total of 240 70-d-old White Leghorn pullets (Hybrid L33) were evaluated for seven weeks. Birds were assigned to three dietary treatments according to a completely randomized design. Treatments consisted of diets containing 100 (T1), 150 (T2), or 200 g/kg (T3) of WB in partial replacement of corn, with 10 replicates per treatment of eight birds per replicate. Birds fed T2 presented higher body weight (p&lt;0.05) compared with T1 and T3 (1112.52 to 1163.35 g). Also, T2 birds presented higher methionine plus cystine intake relative to T1 (0.38 to 0.40...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth performance; Organ weight; Blood parameter; Pullet; Wheat bran.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300347

Gumboro disease: evaluation of serological and anatomopathological responses in vaccinated broiler chickens challenged with very virulent virus strain
Provedor de dados: 89
Autores: Bolis,DA; Paganini,FJ; Simon,VA; Zuanaze,MF; Scanavini Neto,H; Correa,ARA; Ito,NMK.
This paper describes the effects of a strong type of vaccine - Moulthrop G603 º and an intermediate-plus type of vaccine - 228E º in meat-type chickens challenged with a very virulent strain of infectious bursal disease virus (vvIBDV). Blood samples and bursa of Fabricius were taken weekly up to 42 days of age. It was concluded that bursa of Fabricius weight, bursa weight:body weight ratio, body weight and antibody titer evaluated before and after challenge with vvIBDV were not enough to consistently and conclusively differentiate or estimate the protection given by vaccination. Quantitative evaluation of injury intensity and the number of altered lymphoid follicles revealed that Moulthrop G603 caused moderate microscopic lesions in one out of seven birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: GM11; Gumboro; Histopathology; Protection; Vaccine.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200008

H9N2 avian influenza virus antibody titers in human population in fars province, Iran
Provedor de dados: 89
Autores: Hadipour,MM.
Among the avian influenza A virus subtypes, H5N1 and H9N2 viruses have the potential to cause an influenza pandemic because they are widely prevalent in avian species in Asia and have demonstrated the ability to infect humans. This study was carried out to determined the seroprevalence of H9N2 avian influenza virus in different human populations in Fars province, which is situated in the south of Iran. Antibodies against H9N2 avian influenza virus were measured using hemagglutination-inhibition (HI) test in sera from 300 individuals in five different population in Fars province, including poultry-farm workers, slaughter-house workers, veterinarians, patients with clinical signs of respiratory disease, and clinically normal individuals, who were not or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian influenza virus; Fars province; Human; H9N2; Iran; Seroprevalence.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300004

Haematological and Serum Biochemical Responses of Ovambo Chickens Fed Provitamin A Biofortified Maize
Provedor de dados: 89
Autores: Odunitan-Wayas,F; Kolanisi,U; Chimonyo,M.
ABSTRACT The current study was conducted to investigate the influence of provitamin A biofortified maize (PABM) diet, sex and age of birds on the haematological and serum biochemistry parameters of indigenous chickens. A total of ninety-six 13 week old male and female Ovambo chickens were reared and fed on either white maize (WM) a low vitamin A diet or a PABM based diet for eight weeks. Each diet was replicated four times. Packed cell volume (PCV), haemoglobin (Hb), erythrocyte concentration (RBC), leucocytes concentration (WBC), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH) and mean corpuscular haemoglobin concentration (MCHC) were measured. Albumin (ALB), globulin (GLOB), total proteins (TP), triglycerides (TRI), cholesterol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood profiles; Health assessment; Indigenous chicken; Provitamin A biofortified maize diet.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300425

Haematology, Carcass and Fatty Acid Composition of Finishing Broilers Fed Enzyme Supplemented Expeller Copra Meal in Corn-Animal Protein Diets
Provedor de dados: 89
Autores: Devi,A; Diarra,SS; Mael,SH.
ABSTRACT This study analyzes the effect of different levels of expeller copra meal (ECM) in animal protein-based diets with enzyme on the haematology, carcass and fatty acid composition of broilers. One hundred and sixty 20 days old Cobb broilers were assigned 8 different diets, 2 of them being controls and 6 others containing ECM at 150, 300 and 450 g/kg, with or without enzymes. Four replicate cages of 5 birds each were fed the diets in a completely randomized design. Higher white blood cell (WBC) counts were obtained in chickens fed the control and 150 g/kg ECM with enzyme (p&lt;0.05) diets. Meat saturated fatty acids (SFA) content increased on the 150 g/kg diet and later decreased above 300 g/kg without enzyme (p&lt;0.05). Monounsaturated fatty acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative ingredients; Animal health; Product quality.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200302

Hatching Characteristics and Growth Performance of Eggs with Different Egg Shapes
Provedor de dados: 89
Autores: Alasahan,S; Copur,AG.
ABSTRACT This study was carried out to identify the effect of the egg shape index on the hatchability, performance, and carcass yield of Japanese quails (Coturnix coturnix Japonica ). Eggs were incubated in three groups, according to three different egg shape index (SI) values (Group SI-I: 70.00-73.85%, Group SI-II: 73.86-77.71% and Group SI-III: 77.72-81.57%). Unhatched eggs weight loss (HEWL) was correlated with the egg shape index groups (SI-I: 18.51%, SI-II: 13.34% and SI-III: 13.96%; p&lt;0.01), but not with the initial unhatched egg weight (HIEW), hatched egg weight (HEW), or eggshell weight of unhatched eggs (HSW) (p&gt;0.05). The live weight of female and male chicks hatched from SI-I, SI-II, and SI-III egg shape index groups were compared at weeks...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg shape index; Hatchability of fertile eggs; Growth performance; Carcass traits.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100001

Hatching distribution and embryo mortality of eggs laid by broiler breeders of different ages
Provedor de dados: 89
Autores: Almeida,JG; Vieira,SL; Reis,RN; Berres,J; Barros,R; Ferreira,AK; Furtado,FVF.
This study investigated the hatching distribution of eggs from broiler breeders of different ages in distinct periods of incubation. Eggs were incubated in a single-stage experimental incubator. A number of 3.510 eggs were distributed into 3 treatments with 13 replicates of 90 eggs each. Treatments corresponded to breeder age: young (34 weeks), intermediate-age (44 weeks) and old (72 weeks) breeders. Eggs were transferred to the hatcher at 432 incubation hours, hatching was first checked at 449 hours, after which the number of hatched chicks was counted every 6 hours up to 515 incubation hours. After each count, hatched chicks were removed from the hatcher. Data were submitted to analysis of variance using measures repeated. A significant interaction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicks; Embryo mortality; Incubation; Post-hatching management.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200003

Hatching distribution of eggs varying in weight and breeder age
Provedor de dados: 89
Autores: Vieira,SL; Almeida,JG; Lima,AR; Conde,ORA; Olmos,AR.
Broiler chicks from one incubator hatch within long periods of time, which leads to dehydration and reduction in yolk sac reserves of those chicks that have hatched earlier and potentially impairs early performance. The present research investigated the hatching distribution at intervals of incubation using eggs of different weights within one breeder age or eggs from widely different breeder ages. Eggs from breeders at 27 and 59 weeks of age (54 and 69 g) and from breeders at 40 weeks of age, which were graded as light (58 g) and heavy (73 g), were placed in a commercial incubator. There were a total of 1,184 eggs distributed in four treatments and eight replicates: eggs from 27-week-old breeders (27B), eggs from 59-week-old breeders (59B), light eggs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeder age; Egg weight; Hatchability.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200002

Hawthorn (Crataegus Oxyacantha) Extract in the Drinking Water of Broilers on Growth and Incidence of Pulmonary Hypertension Syndrome (PHS)
Provedor de dados: 89
Autores: Ahmadipour,B; Kalantar,M; Hosseini,SM; Yang,LG; Kalantar,MH; Raza,SHA; Schreurs,NM.
ABSTRACT Hawthorn extract has been used for ameliorating cardiac disorders and pulmonary hypertension. Flavonoids and oligomeric proanthocyanidins are considered to be responsible for the positive health effects of hawthorn extract. The effect of Hawthorn extract in the water supply on feed intake, growth, carcass traits, internal organ weight, cardiac indices, the concentration of serum proteins and the incidence of pulmonary hypertension syndrome was evaluated in broiler chickens. At one day-of-age, 225 chickens were assigned to one of three experimental groups where 0, 0.1 and 0.2 ML of hawthorn extract was added per one liter of drinking water. Feed intake, live weight gain and carcass weight increased when hawthorn extract was included in the drinking...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Growth; Hawthorn; Pulmonary hypertension; Ascites.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400639

Health assessment of raptors in triage in Belo Horizonte, MG, Brazil
Provedor de dados: 89
Autores: Andery,D de A; Ferreira Junior,FC; Araújo,AV de; Vilela,DA da R; Marques,MVR; Marin,SY; Horta,RS; Ortiz,MC; Resende,JS de; Martins,NR da S.
Falconiformes (n=82), Strigiformes (n=84) and Cathartiformes (n=14) at a triage center (CETAS-Belo Horizonte, IBAMA, Brazil) were examined between 2008 and 2010 . No bird was reactive at hemagglutination-inhibition (HI) for antibodies against Mycoplasma gallisepticum (Mg). Two Caracara plancus (2/68) had HI titers (16-32) against Newcastle disease virus. No Chlamydophila psittaci DNA was detected in the liver (PCR; n=95). Blood smears (Giemsa; n=89) and spleen fragments (PCR; n=82) were 13.5% and 8.5% positive, respectively, for Haemoproteus only. Necropsy of Cathartiformes (n=10), Falconiformes (n=42) and Strigiformes (n=57) showed that trauma injuries were the main cause (63.3%) of admission and death, being fractures (38.5%) of the thoracic limbs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cathartiformes health; Falcon; Falconiformes health; Hawk; Owl; Raptors; Strigiformes health; Vulture.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300012

Heat Requirements of Two Layer Strains Placed on Different Dates
Provedor de dados: 89
Autores: Gencoglan,S.
ABSTRACT This study was conducted to calculate the heat requirements of Hy-line W-36 and Hy-line W-98 layer chicks placed on different dates, and to select one of these strains based on heat requirements and egg prices. An environmentally-controlled, mechanically-ventilated, and fan and pad-cooled house with a capacity of 94,500 chicks was designed. Based on the identification of September as the month with the highest egg prices, placement dates were selected (16th of March, 1st of April, 16th of April, 23rd of April and 1st of May) to coincide with economic egg weight in that month. The heat requirements for a rearing period of 35days of both evaluated strains starting on the above-mentioned dates were calculated using heat and moisture balance method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat and moisture production; Heat balance; Temperature control; Thermoregulation; Weibull method.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300471

Heat-resistant bacterial phytase in broiler pelleted diets
Provedor de dados: 89
Autores: Carlos,TC de F; Barbosa,LCGS; Shiroma,NN; Dari,RL; Baolin,G; Yongcheng,W; Araújo,CS da S; Araújo,LF.
The objective of the study was to evaluate the effects of a heat-resistant bacterial phytase added to pelleted diets on mineral digestibility, live performance, carcass traits, and bone quality of broilers. Three treatments were evaluated: Positive control; negative control, with 0.10 points reduction in calcium level and 0.15 points reduction in available phosphorus level; and negative control + phytase at 500 FTU/kg. Mineral digestibility and bone quality results demonstrated that the evaluated phytase resisted pelleting as it increased the utilization of the minerals present in the diet.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Performance; Digestibility; Enzyme; Phytate; Phosphorus; Broiler nutrition.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100045

Helminthic Parasites of Chickens (Gallus Domesticus) in Different Regions of São Paulo State, Brazil
Provedor de dados: 89
Autores: Silva,GS da; Romera,DM; Fonseca,LEC; Meireles,MV.
Abstract The Brazilian poultry industry is an outstanding national and international agribusiness sector. Among the Brazilian states, São Paulo is the largest producer of commercial eggs and the fourth largest producer and exporter of chicken meat. Alternatively, semi-intensive and/or organic poultry production have also obtained a significant share of the domestic market as a result of consumer demand. Helminths affect the performance of the birds, causing significant direct or indirect losses. The objective of the present study was to identify the main helminth species present in chickens reared in 17 municipalities of the state of São Paulo. In total, 359 adult birds were investigated. The birds were reared in different housing systems and were obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helminths; Cestodes; Nematodes; Trematodes; Chicken.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100163

Hematological Parameters of Geese Used in Biomedical Research
Provedor de dados: 89
Autores: Benarrós,MSC; Silva,CCB; Silva,GA; Silva,KSM.
ABSTRACT Domestic geese are birds of zootechnical interest commonly created for ornamentation and guard in farms but are also useful for biomedical research, once they supply blood as a byproduct for laboratory analysis. The study aimed to contribute to the completion of health data available on these animals to trace a hematological profile of domestic geese that supply blood for research and provide data on the influence of periodic collections to the health of these animals. Ten Chinese geese (Anser domesticus), white and males, were kept in a research center installation. Four blood samples were performed weekly after the 1st collection, the sample with greater volume was sent to the laboratories of the Evandro Chagas Institute to be used in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geese; Hematology; Laboratory animal science.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200324

Hematological values and body, heart and liver weights of male and female broiler embryos of young and old breeder eggs
Provedor de dados: 89
Autores: Morita,VS; Boleli,IC; Cargnelutti Filho,A.
This study analyzed broiler breeder age (29 or 60 wk-old) effects on physical characteristics of eggs (initial mass, mass loss, volume, diameter, surface area and density) and of eggshells(weight, volume, thickness, conductance, and porosity ), as well as the influence of embryo sex on hematological parameters and body, liver and heart weights during incubation (at days 13, 15, 18 and 21). Physical parameter values were lower in 29-wk-old broiler breeder eggs than those of 60-wk-old breeders, except for relative eggshell weight, which was higher. In both male and female embryos, erythrocytic parameters and the body, liver, and heart weights increased during the incubation. The embryos and their organs were heavier when derived from 60-wk-old breeder eggs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood parameters; Breeder age; Embryos; Eggshell porosity and conductance; Sex.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100002

Hematology and Histopathology of Broiler Chickens Supplemented with Tuna Black Flour
Provedor de dados: 89
Autores: Rebolledo,OFP; Barrera,JEM; Márquez,JG; Vázquez,AR; Casillas,ACG.
ABSTRACT The present study evaluated the effect of the sex and dietary intake of tuna black flour (TBF)on the hematology and histopathology of broiler chickens. A total of 200 sexed broilers (Ross 380) were distributed according to a completely randomized design into four treatments (25 males and 25 females/experimental group).Different levels of inclusion of TBF (0, 1, 2, and 3%) were offered as a source of ω-3 polyunsaturated fatty acids (ω-3 PUFAs), for 42 d. At the end of the experiment, blood samples and tissues were collected. The hematocrit value (Hemat), total protein (PROT-T), hemoglobin concentration (Hemog), erythrocytes concentration (Erythro) and total count and differential of leucocytes (Leuco): lymphocytes, heterophils, monocytes,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Hematology; Histopathology; Ω-3 polyunsaturated fatty acids; Tuna black flour.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400312

HIGH EXPRESSION OF HMOX1 IN BLUE-SHELLED CHICKENS IS ASSOCIATED WITH A TG HAPLOTYPE
Provedor de dados: 89
Autores: Wang,Z; Deng,X; Wang,AI; Liu,R.
ABSTRACTHMOX1 is an important gene in biosynthesis of the eggshell pigment of blue eggs. Previous studies found that HMOX1 is highly expressed in the shell gland of hens laying blue eggs (BlueH) compared with hens laying brown eggs (BrownH); however, the reasons for the differential expression are unclear. In this study five single nucleotide polymorphism (SNP) in HMOX1 were genotyped in 111 BlueH and 115 BrownH. The association of haplotypes of these SNP with the blue egg phenotype was tested. Haplotype-specific expression of HMOX1 was detected in the shell gland. The interaction of sequence variants and transcription factors was analyzed using electrophoretic mobility shift assay (EMSA). A TG haplotype covering upstream 1.4 kb region of HMOX1 was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Blue egg; Biliverdin; HMOX1; Differential expression.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300267

High Prevalence of Multidrug-Resistant Nontyphoidal Salmonella Recovered from Broiler Chickens and Chicken Carcasses in Brazil
Provedor de dados: 89
Autores: Rodrigues,IBBE; Silva,RL; Menezes,J; Machado,SCA; Rodrigues,DP; Pomba,C; Abreu,DLC; Nascimento,ER; Aquino,MHC; Pereira,VLA.
ABSTRACT The extensive use of antimicrobial agents has contributed to the emergence of antimicrobial resistance and multidrug resistance (MDR) in Salmonella, an important zoonotic pathogen that causes outbreaks and sporadic cases of gastroenteritis in humans. The study aimed to investigate the antimicrobial resistance profile of Salmonella strains isolated from poultry in Brazil. A total of 230 Salmonella strains, isolated from cloacal swabs (n=56) and broiler carcasses swabs (n=174) before and after chilling from slaughterhouses under Federal Inspection Service within the period 2012-2017, were analyzed. Serotyping and antibiotic susceptibility testing were performed on all the isolates. Serotyping results showed that 41% of the strains were Salmonella...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nontyphoidal Salmonella; Multidrug resistance; Poultry industry; Heidelberg; Cephalosporins.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100323

High tannin sorghum in diets of japanese quails (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Faquinello,P; Murakami,AE; Cella,PS; Franco,JRG; Sakamoto,MI; Bruno,LDG.
This experiment was carried out to evaluate the effects of replacing corn by high tannin sorghum in diets of japanese quails (Coturnix coturnix japonica) on performance and egg quality. Two hundred and fifty-two quails with 50 weeks of age were evaluated during four periods of 21 days. The treatments consisted of diets containing 20, 40, 60, 80 and 100% of sorghum, and a control treatment (100% of corn). Diets were formulated so that the levels of energy, protein, amino acids (methionine+cystine and lysine), calcium and phosphorus were similar A completely randomized experimental design was used, with six treatments, six replicates and seven quails for experimental unit. Evaluated parameters were egg production (%), feed intake, feed: gain ratio (kg/kg and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix japonica; Performance; Sorghum; Tannin; Yolk color.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200002

High-fiber diets with reduced crude protein for commercial layers
Provedor de dados: 89
Autores: Praes,MFFM; Junqueira,OM; Pereira,AA; Filardi,RS; Duarte,KF; Sgavioli,S; Alva,JCR; Domingues,CHF.
This study aimed at evaluating diets containing different fiber sources and two crude protein levels on the performance, egg quality, and nitrogen metabolism of commercial layers. In total, 392 48-wk-old Isa Brown layers were distributed according to a completely randomized experimental design in a 3x2+1 (control) factorial arrangement, resulting in seven treatments with seven replicates of eight birds each. Treatments consisted of three fiber feedstuffs (cottonseed hulls, soybean hulls, and rice hulls) and two dietary crude protein levels (12% and 16%). Cottonseed hulls associated with the high crude protein level (16%) resulted in the worst feed conversion ratio per dozen eggs. Diets with 16% crude protein resulted in the highest feed intake, egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice hulls; Cottonseed hulls; Soybean hulls; Crude protein; Egg production.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200006

Highly Pathogenic and Multidrug Resistant Avian Pathogenic Escherichia Coli in Free-Range Chickens from Brazil
Provedor de dados: 89
Autores: Oliveira,ES; Cardozo,MV; Borzi,MM; Borges,CA; Guastalli,EAL; Ávila,FA.
ABSTRACT Avian pathogenic Escherichiacoli (APEC) virulence mechanism has been continuously studied and it is believed to be multifactorial and because of this, this work aimed to characterize potentially APEC strains isolated from free-range hens. Isolates were submitted to PCR for the detection of virulence genes, which were of high prevalence. In vivo inoculation of day-old chicks revealed that 49 of these strains were of high and intermediate pathogenicity. In addition, isolates were submitted to antimicrobials susceptibility test with the majority of the strains presenting multiresistance. Phylogenetic analysis showed a greater presence of potentially APEC isolates in-group B2. In addition, high heterogeneity was detected among the isolates byXbaI...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: APEC; Backyard chickens; Colibacillosis; Pathogenicity; Virulence factors.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100326

Histomorphological changes by epididymal lithiasis in roosters
Provedor de dados: 89
Autores: Geraldo,I; Mahecha,GAB; Martins,NRS.
Epididymal lithiasis (EL) histopathology is described using light and electronic microscopy in roosters (Gallus gallus domesticus) naturally affected by EL in Minas Gerais, Brazil. The histologic and morphological changes by EL in roosters was performed regarding cellular and subcellular details through light and electron microscopy. Efferent ductules epithelium lysosomal increase in size and numbers, membrane rupture, cellular vacuolation, ciliary loss, basal membrane degeneration, inflammatory reaction with mononuclear infiltrations, edema, epithelial and vascular endothelium losses were described. All industrial and freerange chickens showed EL in varying degrees in the efferent ductules (ED). However, ED altered areas did not correlate with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epididymal lithiasis; Histopathology; Light microscopy; Electron microscopy; Gallus gallus domesticus; Infertility; Rooster; Testicular calculus.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100004

Histomorphology of bursa of Fabricius: effects of stock densities on commercial broilers
Provedor de dados: 89
Autores: Muniz,EC; Fascina,VB; Pires,PP; Carrijo,AS; Guimarães,EB.
During the past few years, there has been considerable interest on the effects of stocking density on broiler behavior and immunity. Stress may cause immunodeficiency by affecting cell and humoral responses, as well as body weight decrease, and foot-pad dermatitis. The aim of this study was to study histomorphological changes of the bursa of Fabricius in broilers submitted to three different stocking densities (10, 15, and 20 birds/m²) from one to 42 days of age. Three birds from each group were sacrifieced on days 7 and 42. The bursa was collected, fixed, and processed for histomorphometric assessment using a Kontrom KS 400 image analyzer. Data were analyzed by Biostat 3.0 (Tukey Test). The results of average cortical area percentage in bursal follicles...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bursa of Fabricius; Stock density; Commercial broilers.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400003

Hsp70 Genotypes and Heat Tolerance of Commercial and Native Chickens Reared in Hot and Humid Conditions
Provedor de dados: 89
Autores: Duangjinda,M; Tunim,S; Duangdaen,C; Boonkum,W.
ABSTRACT Heat tolerance in poultry production was obtained attention due to the need for genetic lines that can withstand climate changes. This study aimed at investigating heat tolerance in commercial and native broiler genetics, as well as the physiological and growth performance responses of HSP70 genotypes submitted to heat stress. In Experiment I, heterophil:lymphocyte (H:L) ratio, as an indicator of heat tolerance, was compared between commercial broilers (n = 100) and Thai native chickens (n = 100). Growing chickens (with similar initial weight) of each genetic strain were randomly divided into two groups: 1) thermoneutral environment (26 oC ± 2 oC) and 2) heat stress (36 oC ± 2 oC). The results showed that native chickens originating from a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat shock protein; Indigenous chicken; HSP70; Thermotolerance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100007

Humoral immunological response in broilers vaccinated against newcastle disease and supplemented with dietary zinc and vitamin E
Provedor de dados: 89
Autores: Cardoso,ALSP; Albuquerque,R; Tessari,ENC.
The humoral immune response of broilers fed diets supplemented with Zinc (Zn) (0, 40, and 400mg/kg) and vitamin E (0, 12, and 120mg/kg), separately or combined, was evaluated. A completely randomized design was used according to a 3x3 factorial arrangement, with nine treatments and four repetitions per treatment. Sexed birds (n=1440) were distributed in 36 boxes with 40 chicks each and reared until 41 days of age. Vaccination against Newcastle Disease (ND) was performed when birds were 14 days old. ELISA and HI tests were used to assess antibody levels before vaccination and at 28, 35 and 41 days of age. The results were analyzed using Proc Mixed from SAS. The interaction between the highest dietary levels of Zn and vitamin E resulted in higher antibody...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Humoral Immunity; Newcastle Disease; Vitamin E; Zinc.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200005

Hybrid Phytase and Carbohydrases in Corn and Soybean Meal-Based Diets for Broiler Chickens: Performance and Production Costs
Provedor de dados: 89
Autores: Bavaresco,C; Krabbe,E; Gopinger,E; Sandi,AJ; Martinez,FN; Wernik,B; Roll,VFB.
ABSTRACT This study aimed to evaluate the effect of using 500 FTU/kg of hybrid phytase (created from three bacteria - Natuphos E), with or without xylanase and glucanase (560 TXU/kg; 250 TGU/kg) - Natugrain TS, in corn and soybean meal-based diets, with nutritional reductions in metabolizable energy (ME), Ca, and available phosphorus (AP), on performance parameters and production costs in broiler chickens. The 1875chickens were housed in boxes and distributed among 5 treatments with 15 replicates of 25 chickens each. The experiment included a positive control (the diet of which met the nutritional requirements of the birds), two negative controls (with ME reductions of 70 and 100 kcal/kg, and fixed reductions in Ca [0.16%] and AP [0.15%]), and two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Cost; Energy; Enzyme; Phosphorus.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100319

Identification of critical points of thermal environment in broiler production
Provedor de dados: 89
Autores: Menezes,AG; Nääs,IA; Baracho,MS.
This paper describes an exploratory study carried out to determine critical control points and possible risks in hatcheries and broiler farms. The study was based in the identification of the potential hazards existing in broiler production, from the hatchery to the broiler farm, identifying critical control points and defining critical limits. The following rooms were analyzed in the hatchery: egg cold storage, pre-heating, incubator, and hatcher rooms. Two broiler houses were studied in two different farms. The following data were collected in the hatchery and broiler houses: temperature (ºC) and relative humidity (%), air velocity (m s-1), ammonia levels, and light intensity (lx). In the broiler house study, a questionnaire using information of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Hatchery; Quality control.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100003

Identification of Eimeria mitis and Eimeria praecox in broiler feces using polymerase chain reaction
Provedor de dados: 89
Autores: Meireles,MV; Roberto,LO; Riera,RF.
There are few reports concerning the epidemiology of Eimeria praecox and Eimeria mitis in Brazil. In the present experiment, the polymerase chain reaction (PCR) was used to identify these species in 156 samples of broiler chicken feces from several Brazilian states and the Federal District. Oocysts present in feces samples were purified by sodium chloride flotation followed by addition of DNAzol reagent (Invitrogen®) for extraction of genomic DNA. DNA was precipitated and stored following DNAzol reagent manufacture's instructions. The primers and PCR conditions were as described by Schnitzler et al. (1999). In the 156 field samples analyzed by PCR, 70 and 45 were positive for E. praecox and E. mitis, respectively. In this study we have shown that DNA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diagnosis; Eimeria mitis; Eimeria praecox; Epidemiology; Polymerase chain reaction.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400010

Identification of the capsule type of Pasteurella multocida isolates from cases of fowl cholera by multiplex PCR and comparison with phenotypic methods
Provedor de dados: 89
Autores: Furian,TQ; Borges,KA; Pilatti,RM; Almeida,C; Nascimento,VP do; Salle,CTP; Moraes,HL de S.
The ability of Pasteurella multocida to invade and multiply in its host is enhanced by the presence of the capsule, one of the most important virulence factors for this bacterium. Capsular typing methods are often used in epidemiological and pathogenesis studies of this agent. Five different serogroups have been identified based on serological typing. However, such tests are laborious, and agglutination of homologous antiserum may fail. The aim of this study was to develop a multiplex PCR protocol for the identification of the hyaD-hyaC and dcbF genes specific to serogroups A and D, respectively, and to compare these results with those of phenotypic tests for 54 strains isolated from fowl cholera cases in southern Brazil. The kappa coefficient and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular diagnosis; Non-serologic tests; Pasteurellosis; Serogroup.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200004

Identification of turkey astrovirus and turkey coronavirus in an outbreak of Poult Enteritis and Mortality Syndrome
Provedor de dados: 89
Autores: Villarreal,LYB; Assayag,MS; Brandão,PE; Chacón,JLV; Bunger,AND; Astolfi-Ferreira,CS; Gomes,CR; Jones,RC; Ferreira,AJP.
This article reports a survey on turkey astrovirus (TAstV) and turkey coronavirus (TCoV) infections with RT-PCR in 17 turkey flocks affected by acute enteritis and two apparently normal turkey flocks located in the Southeastern region of Brazil by PCR (TAstV and TCoV). Seven out of the 17 affected flocks were positive for TAstV and 14 for TCoV, with seven co-infections. In one of the two apparently normal flocks, a TAstV-TCoV co-infection was found. Although a definitive association of these agents and the signs can not be made, the implications of these findings are discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astrovirus; Coronavirus; Turkey; Enteritis; Diagnosis.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200010

Identiﬁcation and Characterisation of Alternative Splice Variants of Hoxb9 and Their Correlation with Melanogenesis in the Black-Boned Chicken
Provedor de dados: 89
Autores: Wang,G; Yu,S; Liao,J.
ABSTRACT Homeobox B9 (HOXB9) gene has been demonstrated to be associated with melanogenesis in chicken plumage by high-throughput RNA sequencing. In this study, we cloned and characterised HOXB9 in black-boned chickens. Two alternative splice variants (HOXB9-1 and HOXB9-2) were identiﬁed in chicken feather bulbs. Expression analysis of HOXB9 in 11 different chicken tissues by RT-PCR indicated that the two transcripts were only expressed in the kidney, abdominal fat, feather bulbs, skin, and small intestine. No HOXB9-1 or HOXB9-2 transcripts were detected in the breast muscle or the ovary. The two HOXB9 variants were expressed at significantly different levels in black feather bulbs and white feather bulbs (p&lt;0.01), and in black skin compared with white...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Homeobox B9 gene; Alternative splicing variant; Melanin; Chicken.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200315

Immune Regulatory Effects of Enteromorphaclathrata Polysaccharides on Nd Attenuated Vaccine in a Chicken Model Infected with Reticuloendotheliosis Virus
Provedor de dados: 89
Autores: Sun,Q; Shen,M; Li,F; Liu,J; Lu,L; Zhu,M; Yuan,D.
ABSTRACT Reticuloendotheliosis virus (REV) infection has frequently affected the poultry industry in recent years. The infection with REV weakens the immune responses of the infected poultry. It is reported that Enteromorphaclathrata polysaccharides are capable of regulating immune function. In order to investigate the immuno regulatory effects of Enteromorphaclathrata polysaccharides (EPS) on the response of REV-infected broilers to a live attenuated Newcastle disease (ND) vaccine. Broilers were intraperitoneally injected with REV at one day of age, subcutaneously infected with EPS at 2 days of age, and vaccinated by nasal drip with a live attenuated ND (Lasota strain) vaccine at 5 days of age. Immune organ index, secretory immunoglobulinA (SIgA),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polysaccharide; Reticuloendotheliosis Virus; ND attenuated vaccine; Chicken; Immunoregulation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400601

Immune response of broilers fed conventional and alternative diets containing multi-enzyme complex
Provedor de dados: 89
Autores: Montanhini Neto,R; Ceccantini,ML; Fernandes,JIM.
The present study aimed at evaluating the effect of adding a commercial multi-enzyme complex to conventional and alternative broiler diets on the immune response and occurrence of lesions in the intestinal mucosa. In total, 900 male broiler chicks were distributed according to a completely randomized design, with six treatments of six replicates each. Two control diets were formulated: one with conventional feedstuffs (T1), based on corn and soybean meal, and one with alternative feedstuffs (T4), containing corn, millet, and soybean, canola and sunflower meals. Based on these diets, other four were prepared with reduced metabolizable energy, digestible amino acids, calcium and available phosphorus levels and the addition (T3 and T6) or not (T2 and T5) of a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrases; Non-starch polysaccharides; Fibrous brans.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300009

Immunological evaluation of the intestinal mucosa of broiler chicks treated with Lactobacillus Spp. and challenged with Salmonella Enteritidis
Provedor de dados: 89
Autores: Okamoto,AS; Andreatti Filho,RL; Lima,ET; Pereira,REP; Menconi,A; Rocha,TS; Marietto-Gonçalves,GA.
This study aimed at the antibody production by intestinal mucosa of broilers chicks were orally inoculated with Lactobacillus spp. at one and/or 21 days of age, and subsequently challenged with Salmonella enterica, subspecies enterica, serotype Enteritidis (S. Enteritidis). A total number of 288 drug-free broiler chicks was divided into 6 groups (groups A, B, C, D, E, and F), according to age at Lactobacillus spp. inoculation and SE challenge. The intestinal mucosa immune response was determined as the production of immunoglobulin A against S. Enteritidis, and evaluated by the Enzyme-Linked Immunosorbent Assay (ELISA) technique in intestinal washing fluid. Groups treated with Lactobacillus spp. presented higher IgA production only when the chicks were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicks; IgA; Lactobacillus; Salmonella.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400009

Immunomodulation Properties of Solid-State Fermented Laetiporussulphureus Ethanol Extracts in Chicken Peripheral Blood Monocytes In Vitro
Provedor de dados: 89
Autores: Lin,WC; Lee,MT; Lin,LJ; Chang,SC; Lee,TT.
ABSTRACT Laetiporus sp. is recognized as a fungal species traditionally used for medicinal purposes. This study investigated the in-vitro effects of solid-state fermented Laetiporussulphureus ethanol extracts (LSE) for their immunomodulatory potential. Bioactive levels detected in the LSE on different days throughout the fermentation period revealed that the 12th day was the most efficient, with 7.19 ± 0.66 GAE/g DM crude phenolic content, 2.71 ± 0.03 UAE/g DM crude triterpenoid content, 12.93 ± 0.88 GCE/g DM crude polysaccharides, and 96.44 ± 0.2 mg/g DM ergosterol content. In-vitroLSE tests on chPBMC showed no cytotoxicity within a range of 0.05-1 mg/mL, but LPS-inhibited cell viability was improved, as well as LPS-induced nitric oxide (NO) production...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laetiporussulphureus; In vitro; Immunomodulatory; Solid-state fermentation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400316

Immunomodulatory and growth-promoting effect of a probiotic supplemented in the feed of broiler chicks vaccinated against infectious bursal disease
Provedor de dados: 89
Autores: Naseem,S; Rahman,SU; Shafee,M; Sheikh,AA; Khan,A.
This study was designed to investigate the effects of a probiotic plus an immunomodulatory product on the growth performance, immune response and net economic returns of broiler chicks vaccinated against Infectious bursal diseases virus (IBDV). A flock of 350 day-old chicks were equally and randomly distributed in seven groups, each comprising 50 birds. A mixture of microorganisms (¹Probiotic) or Cyclophosphamide (immune suppressor) was offered through feed supplementation to different groups. The Probiotic, consisting of Lactobacillus species, Bifidobacterium, Streptococcus salivarius and Enterococcus faecium, in addition to Aspergillus oryza and Candida pintolopessii. Compared with control treatment group, the probiotic-supplemented chicks had better...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotic; Cyclophosphamide; Mortality; Morbidity; IBDV.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200004

Impact of exposure to cold on layer production
Provedor de dados: 89
Autores: Alves,FMS; Felix,GA; Almeida Paz,ICL; Nääs,IA; Souza,GM; Caldara,FR; Garcia,RG.
Infrared thermographic images were used to evaluate the effect of the exposure of layers to cold. In this trial, 540 Isa Brown® layers with an average age of 69 weeks were housed in a conventional layer house typically used in Brazil during a period of cold environmental temperatures. Environmental and heat-transference data were recorded between July 13-16, 2010. It was verified that layers under cold stress conditions lost four times more energy that the recommendations trying to maintain their body temperature. Due to their reduced feed intake capacity, hens are not capable of increasing the availability of the metabolic energy required to maintain their body temperature and egg production, consequently resulting in economic losses.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infrared image; Housing environment; Heat exchange; Economic evaluation; Egg production.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300010

Impact of particle size, thermal processing, fat inclusion, and moisture addition on starch gelatinization of broiler feeds
Provedor de dados: 89
Autores: Muramatsu,K; Maiorka,A; Dahlke,F; Lopes,AS; Pasche,M.
The present study evaluated the effect of feed particle size, thermal processing different levels of fat inclusion and of moisture addition on the amount of gelatinized starch in a corn-soybean broiler diet. The different processing factors were combined in a 2 x 4 x 4 x 2 factorial arrangement in a three randomized block design consisting of three production series: two particle sizes (coarse: 1041 microns and medium: 743 microns), four fat inclusion levels at the mixer (15, 25, 35, and 45 g/kg of feed), four moisture addition levels in the conditioner (0, 7, 14, and 21g/kg of feed), and two thermal processing treatments (conditioning-pelleting or conditioning-expanding-pelleting) which resulted in 64 different processed feeds. For the determination of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conditioning; Expander; Gelatinization; Moisture; Starch; Fat.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400005

Impacts of Breeder Age, Storage Time and Setter Ventilation Program on Incubation and Post-Hatch Performance of Broilers
Provedor de dados: 89
Autores: Okur,N; Eleroğlu,H; Türkoğlu,M.
ABSTRACT The impacts of breeder age (32 and 55 weeks), egg storage time (2-12 days), setter ventilation program (control-test) on incubation and post-hatch performance of broilers were investigated in this study. Young (Y) and old (O) breeders’ hatching eggs were incubated in two different setters operated by two different ventilation programs as control (C) and test (T). Incubation took place after a short (S) and long (L) time of storage in this study. According to the trial design, eight treatment groups were as YSC, YST, YLC, YLT, OSC, OST, OLC and OLT. In total 9600 eggs and 6400 chicks were used. Early stage embryonic mortality (ED) rates were lower and accordingly hatchability of fertile eggs (HF) were higher (p&lt;0.05) in YS than the other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeder age; Broiler; Egg storage; Incubation; Setter ventilation program.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100027

Implications of the use of sorghum in broiler production
Provedor de dados: 89
Autores: Garcia,RG; Mendes,AA; Almeida Paz,ICL; Komiyama,CM; Caldara,FR; Nääs,IA; Mariano,WS.
This study aimed at evaluating total or partial replacement of corn by sorghum in broiler diets and at estimating the effect of the pigment supplementation on broiler performance, carcass and cuts yield, and possible breast and leg pigmentation. We used 1680 one-d-old Ross® 308 broilers. Birds were sexed and distributed according to a completely randomized design (2 x 3 + 1). Treatments consisted of a control diet based on corn and diets with two levels corn replacement by sorghum (50 and 100%) and three pigments levels, with four replicates of 60 birds per treatment. There was no effect (p &amp;gt; 0.05) of the dietary replacement of corn by sorghum on performance, carcass and parts yield, and no changes in breast and leg meat pH (p &amp;gt;0.05). Meat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Meat quality; Pigments; Replacement of corn.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300013

Improved Antioxidant Capacity and Immune Function of Broiler Chickens Fed with Selenium-enriched Candida utilis
Provedor de dados: 89
Autores: Wang,D; Wang,D; Pu,L; Wei,G.
ABSTRACT The aim of this study was to assess the effect of selenium-enriched Candida utilis with high contents of organic selenium (Se) and glutathione (GSH) on growth performance, antioxidant capacity and immune function of broiler chickens. A total of 100 healthy 7-day-old male broiler chickens were randomly divided into 5 groups, and fed diets supplemented with (a) Na2SeO3, (b) C. utilis, (c) Se-enriched Saccharomyces cerevisiae, (d) Se-enriched C. utilis, and (e) the control without any supplements. The experiment lasted for 6 weeks and parameters were recorded on day 42. No significant differences in average daily gain were found among the 5 groups. However, Se-enriched C. utilis supplemented in the diet increased activities of glutathione peroxidase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant capacity; Broiler chickens; Glutathione; Immune function; Selenium-enriched Candida utilis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200314

Improving Nutrition Utilization and Meat Quality of Broiler Chickens Through Solid-State Fermentation of Agricultural By-Products by Aureobasidium Pullulans
Provedor de dados: 89
Autores: Lee,MT; Lai,LP; Lin,WC; Ciou,JY; Chang,SC; Yu,B; Lee,TT.
ABSTRACT A 35 d trial was conducted to evaluate the effects of dietary supplementation of co-fermented agricultural by-products, soybean hulls and Pleurotus eryngii stalk residue (PESR), with Aureobasidium pullulans on nutrients digestibility and meat quality in broilers fed on conventional corn-soybean meal basal diet. A total of 400 1-d-old Ross broilers were allotted to 4 dietary treatments with 4 replicate pens (25 birds per pen). Birds were fed the corn-soybean meal diets supplemented with 0% (CON), 0.5% fermented soybean hulls (0.5% FSBH), 0.5% fermented soybean hulls partially replaced with PESR (0.5% FSHP) and 1.0% FSHP. The broilers fed on the diet that contained fermented products had higher total tract apparent digestibility for hemicellulose...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mushroom stalk residue; Soybean hull; Aureobasidium pullulans; Digestibility; Meat water holding capacity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400645

In ovo supplementation of 25(OH)D3 to broiler embryos
Provedor de dados: 89
Autores: Gonzales,E; Cruz,CP; Leandro,NSM; Stringhini,JH; Brito,AB.
A dose of 0.3 mL of water solution containing 0.00 (control), 0.625, 1.250 or 1.875 µg of 25-hydroxy cholecalciferol (25(OH)D3) was administered to 312 fertile eggs derived from 49-w-old Cobb 500 broiler breeders on the 17th day of incubation (DE17) via allantoic cavity. After treatment, eggs were distributed and maintained until hatching in four incubators set at 37.8 ºC and 55% RH. Each incubator received eggs from all treatments, according to a block design with four treatments of 77-79 replicates each. Hatching was checked every two hours from 484h to 512h of incubation to evaluate productivity and chick qualities. Chicks were housed until 10 days of age in heated battery cages according to a block design with four treatments of 10 replicates of six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cholecalciferol; Embryo; In-ovo supplementation; Vitamin D.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300005

In vitro characterization and in vivo properties of Salmonellae lytic bacteriophages isolated from free-range layers
Provedor de dados: 89
Autores: Fiorentin,L; Vieira,ND; Barioni Júnior,W; Barros,S.
Occurrence of food poisoning related to Salmonella-contaminated eggs and chicken meat has been frequent in humans. Salmonella Enteritidis (SE) and Salmonella Typhimurium (ST) are included among the most important paratyphoid salmonellae associated with chicken meat and eggs. Elimination of Salmonella at the pre-harvest stage can play a significant role in preventing the introduction of this pathogen into the food chain and consequently in the reduction of food poisoning in humans. Bactericidal bacteriophages may provide a natural, nontoxic, feasible and non-expensive component of the multi-factorial approach for a pre-harvest control of Salmonella in poultry. Five bacteriophages lytic for SE PT4 and ST were obtained from 107 samples of feces of free-range...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteriophages; Food poisoning; Poultry; Salmonella.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200009

In vitro efficiency of disinfectants against salmonella enteritidis samples isolated from broiler carcasses
Provedor de dados: 89
Autores: Cardoso,MO; Ribeiro,AR; Santos,LR; Borsoi,A; Pilotto,F; Rocha,SLS; Nascimento,VP.
The threat to public health represented by Salmonella is at least partially a consequence of its ecology in poultry hosts. Good manufacturing practices in the processing plant can reduce the contamination of poultry products, and critical control point principles are essential throughout the chain production. One procedure adopted in critical points control to prevent and to reduce Salmonella in farms and poultry products is the use of disinfectants. This study aimed at evaluating disinfectant efficiency against Salmonella enteritidis samples isolated from broiler carcasses in Rio Grande do Sul State between 1995 and 1996. The tested disinfectants were: phenol 1:256, quaternary ammonium 1:2500, glutaraldehyde 1:200, and iodine 1:500, with contact times of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler carcasses; Disinfectants; In vitro resistance; Salmonella enteritidis.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200010

In Vivo Detoxification of Ochratoxin A by Highly Porous Magnetic Nanocomposites Prepared from Coconut Shell
Provedor de dados: 89
Autores: Gulfam,N; Zahoor,M; Khisroom,M; Khan,FA.
ABSTRACT The current study was conducted to elucidate the clinical effect of ochratoxin A in Gallus gallusdomesticus and to ameliorate its toxic effects by the development and characterization of highly porous carbon-based adsorbent derived from coconut shell. A series of experiments were performed on one day-old chicks (Group A to F). Clinical signs of the positive control (group B fed on 400 ppb ochratoxin A contaminated feed) included depression, diarrhea, increased water intake, low body weight, high degree of genotoxicity, swollen and hemorrhagic kidneys and liver. Serum alanine amino transferase (ALT), alkaline phosphatase (ALP), creatinine and urea concentration significantly increased while albumin, globulin and total proteins were found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Serum alanine transferase; Alkaline phosphatase; Clinical signs; Gross lesions.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400675

Incidence and physical properties of PSE chicken meat in a commercial processing plant
Provedor de dados: 89
Autores: Garcia,RG; Freitas,LW de; Schwingel,AW; Farias,RM; Caldara,FR; Gabriel,AMA; Graciano,JD; Komiyama,CM; Almeida Paz,ICL.
It is known that PSE meat present important functional defects, such as low water holding capacity and ultimate pH, which may compromise the quality of further-processed meat products. In this study, L* (lightness), a* (redness), and b* (yellowness) values of 500 chicken breast fillets were determined using a portable colorimeter (Minolta, model CR-400) in a commercial processing plant. Fillets were considered pale when their L* was &amp;gt;49. Out of those samples, 30 fillets with normal color and 30 pale fillets were evaluated as to pH, drip loss, cooking loss, water holding capacity, shear force, and submitted to sensorial analysis. An incidence of 10.20% PSE meat was determined. Pale and normal fillets presented significantly different (p&lt;0.05) pH...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat color; Meat pH; Pale meat; Poultry production; Water retention capacity.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400003

Incidence of Pododermatitis in Broiler Reared under Two Types of Environment
Provedor de dados: 89
Autores: Jacob,FG; Baracho,MS; Nääs,IA; Salgado,DA; Souza,R.
ABSTRACT Housing environment is essential to achieve good broiler performance and to prevent diseases, including footpad dermatitis (FPD). The objective of this study was to determine the incidence of footpad dermatitis in broilers chickens according to housing type. The study was carried out with broilers reared for 5, 12, 19, 29 and 40 days. Four houses were used in this observational study. House 1 (A1) had positive pressure and reused litter; house 2 (A2) had positive pressure and new litter (sawdust); house 3 (A3) had positive pressure and new litter (rice husks); and house 4 (A4) had negative pressure and reused litter. During the entire experiment, air environmental and litter surface temperatures, and litter compaction were recorded. Pododermatitis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Footpad dermatitis; Surface litter temperature; Poultry litter.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200247

Incidence of Salmonella in imported day-old ducklings. Brazil, 1998-2003
Provedor de dados: 89
Autores: Ribeiro,SAM; Galleti,MCM; Orsi,MA; Ferrati,AR; Mendonça,AO; Doretto Júnior,L; Camillo,SCA; Reischak,D.
The occurrence of Salmonella in a samples of 40 imported day-old duckling flocks was assessed from 1998 to 2003 according to the guidelines of the Brazilian National Poultry Health Program (Programa Nacional de Sanidade Avícola-PNSA). The pathogen was recovered from 26 flocks (65.0%). The most common serovars were S. Saintpaul and S. Kottbus. Up to four serovars were isolated from a single flock. Transportation box swabs (82.6%) and yolk sac pool (47.1%) showed the highest and the lowest frequency of Salmonella isolation, respectively. The high percentage of Salmonella isolation from imported day-old ducklings causes concern because of the zoonotic potential of this agent and its economical importance to commercial poultry breeding.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Imported ducklings; Isolation.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100006

Incidência de Doenças Metabólicas em Frangos de Corte no Sul do Brasil e Uso do Perfil Bioquímico Sanguíneo para o seu Estudo
Provedor de dados: 89
Autores: González,FHD; Haida,KS; Mahl,D; Giannesi,G; Kronbauer,E.
Esse trabalho foi realizado em granjas de frangos de corte localizadas no estado do Paraná (sul do Brasil). Foram consideradas 450 granjas, perfazendo uma população total de 4,5 milhões de frangos em um período de 6 meses, durante o qual foram registradas a mortalidade total e as mortes devidas a síndromes metabólicas relacionadas com síndrome ascítica e síndrome de morte súbita, entre a 1ª e a 7ª semana de vida. A mortalidade total foi de 4,8%. Desse total, 12,9% foram registrados como mortos compatíveis com síndrome ascítica e 26,4% compatíveis com síndrome de morte súbita. O pico de mortalidade esteve na 5ª semana de idade para a síndrome ascítica e na 6ª semana para a síndrome de morte súbita. Discute-se que a síndrome de morte súbita pode estar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frangos; Perfil metabólico; Síndrome ascítica; Síndrome de morte súbita; Síndromes metabólicas.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200002

Inclusion of Moringa Leaf Powder (Moringa oleifera) in Fodder for Feeding Japanese Quail (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Castillo,LRI; Portillo,LJJ; León,FJ; Gutiérrez,DR; Angulo,EMA; Muy-Rangel,MD; Heredia,JB.
ABSTRACT This research evaluated the nutritional, nutraceutical, antimicrobial, as well as the growing promoter effect of Moringa oleifera (MOR) leaves flour in fodders for fattening Japanese quails. The antimicrobial activity was measured using the method of Kirby-Bauer. A completely random design with 4x2 factorial arrangement was used, fodders included 0, 7, 14, and 21% of MOR, with and without Virginiamycin (100 ppm), during 35 d of fattening, 480 one-day old unsexed quails were used, each treatment had 5 replicates with 12 quails/cage. MOR inhibited the growth of bacteria gram (+) and gram (-). The inclusion of MOR in the period from 1 to 14 d inhibited the weight gain (p&lt;0.001), increased feed conversion (p&lt;0.001), without affecting the feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AGP; Antioxidant; Coturnix; Moringa oleifera; Phenolic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100015

Inclusion of sunflower meal, with or without enzyme supplementation, in broiler diets
Provedor de dados: 89
Autores: Tavernari,FC; Albino,LFT; Morata,RL; Dutra Júnior,WM; Rostagno,HS; Viana,MTS.
Two experiments were carried out to evaluate the effects of the dietary inclusion of different dietary sunflower meal (SFM) levels (0% and 20%), with or without the supplementation of an enzyme complex (EC) (cellulase, β-glucanase, xylanase, and phytase) on broiler performance, carcass and cuts yields, economics, and dietary AMEn values. A randomized block experimental design, with a 2x2 factorial arrangement of eight replicates of 20 birds each, was used to test performance. A completely randomized experimental design with a 2x2 factorial arrangement of eight replicates of four birds each was used to test metabolism. No interaction effects between SFM and EC were observed on performance. Although SFM significantly reduced feed intake in the starter phase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Broiler production; Enzyme complex.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400007

Incorporation of Labeled Methionine as a Tissue Tracer in Broiler Chickens
Provedor de dados: 89
Autores: Stradiotti,AC; Bendassolli,JA; Ducatti,C; Sartori,JR; Pelícia,VC; Araujo,PC; Maruno,MK; Pezzato,AC.
ABSTRACT The objective of this study was to evaluate the process of L-methionine incorporation in the blood plasma, liver, breast muscle, and abdominal fat of 35- to 59-d-old broiler chickens using the carbon stable isotope (12C and 13C) technique for the estimation of methionine requirements. In this experiment, 51 male broiler chickens orally received a solution of L-[13C1] methionine (92 atm % 13C) at 29 µmol/kg live weight/h for 6 h. Three birds were sacrificed for tissue collection at times 0 h (control), 0.5, 1, 2, 3, 4, 5, 6, 12, 24, 48, 72, 96, 120, 144, 168, and 336 h after the administration of the first dose. Tissue L-[13C1] methionine incorporation mass and percentage results were analyzed using Minitab 16 statistical software. Except for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isotopic dilution; Labeled isotopes; Turnover.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400719

Increased iNOS gene expression in the granulosa layer of F1 follicle of over-fed and under-fed broiler breeder hens
Provedor de dados: 89
Autores: Sheikh Ahmadi,A; Zaghari,M; Shivazad,M; Hassanpour,H; Towhidi,A.
To clarify the effects of high (20 and 40% more than normal) and low (20% less than normal) daily feed allowance on egg and body parameters, ovarian morphology and plasma glucose, cholesterol, triacylglycerol, leptin-like hormone, nitrite/nitrate and gene expression of inducible nitric oxide synthase (iNOS) in the granulosa layer of F1 follicle, broiler breeder hens (30-week-old) were fed for 30 days. Egg and body parameters significantly changed between treatments (p&lt;0.05). Effect of different level of feed intake on ovarian morphology parameters was significant (p&lt;0.05), except for white follicles. After 30 days of experiment, plasma nitrite/nitrate (as a index of plasma nitric oxide) and leptin-like hormone increased in FI+20% and FI+40% groups as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder; Follicle; Leptin-like hormone; Nitric oxide; Over/under-fed.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400004

Incubabilidade e Qualidade de Pintos de Ovos Matrizes de Frangos de Corte Submetidos a Estresse de Temperatura
Provedor de dados: 89
Autores: Leandro,NSM; Gonzales,E; Varoli Jr.,JCV; Loddi,MM; Takita,TS.
O experimento foi conduzido para avaliar o efeito do estresse de temperatura sobre as características de incubabilidade e qualidade dos pintos nascidos. Trezentos ovos, obtidos de um lote de matrizes de frangos de corte com 42 semanas, foram distribuídos em três incubadoras, reguladas para manter uma temperatura de 37,8ºC, umidade relativa de 60% e viragem mecânica a cada duas horas. Aos 16 dias de incubação (D16), aplicou-se uma variação de temperatura de calor (40ºC) ou frio (32ºC) durante cinco horas em duas máquinas. Os embriões da terceira máquina foram usados como controle. Os dados obtidos foram analisados estatisticamente, obedecendo-se a um delineamento inteiramente casualizado, com 3 tratamentos. A eclodibilidade e a qualidade dos pintainhos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incubação; Estresse; Temperatura; Qualidade de pintainho; Frangos de corte.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100006

Indicators of Work Accidents in Slaughter Refrigerators and Broiler Processing
Provedor de dados: 89
Autores: Takeda,F; Moro,ARP; Machado,L; Zanella,AL.
ABSTRACT This research aims at describing data for an epidemiological profile, as well as to contribute to the improvement of systems of information, prevention and risk control of accidents in the workplace in processing and further processing broiler plants. In this study, data from documents of 1,274 investigations of typical work accidents were analyzed. Descriptive statistics were used for the analysis, and the frequency and severity of accidents were calculated according to NBR 14280:2001. The results show that men tend to have more accidents than women; 69.8% of those injured had been in the company for less than 3 years; 37% of the accidents were cuts; 35.6% were bruises; the most affected body parts were hands and fingers, representing a total of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Behavioral trait; Genetic parameters; Survival kit; Wild birds.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200297

Infection of commercial laying hens with Salmonella Gallinarum: clinical, anatomopathological and haematological studies
Provedor de dados: 89
Autores: Freitas Neto,OC; Arroyave,W; Alessi,AC; Fagliari,JJ; Berchieri,A.
This study aimed at evaluating the susceptibility of commercial laying hens to Salmonella Gallinarum (SG). Two experiments were carried using a mutant strain of Salmonella Gallinarum resistant to nalidix acid (SGNALr). In the first trial, the resistance of birds was evaluated based on clinical signs, faecal shedding, and mortality. It was carried out with six lines of commercial layers being three light white layers, considered to be resistant to SG (W1, W2, W3), and three semi-heavy brown varieties (B1, B2, B3), considered susceptible to SG. Each group contained 15 one-day-old birds. Hens were inoculated in the crop at 5 days of age with 0.2 mL of SGNALr neat culture. In addition, to each brown variety, a new group of 15 birds was challenged with 0.2mL of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fowl typhoid; Hematology; Laying hens; Salmonella Gallinarum; Susceptibility.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200010

Infectious bronchitis in Brazilian chickens: current data and observations of field service personnel
Provedor de dados: 89
Autores: Silva,EN.
The infectious bronchitis virus (IBV) was detected for the first time in Brazil by Hipólito in 1957 in chickens sold life in the municipal market of Belo Horizonte, MG, when commercial poultry production was just starting in that country. The Massachusetts (Mass) serotype was identified. However, the clinical disease was only observed in 1975, when poultry production was intensely growing. The extensive outbreak produced the classical condition in layers and breeders, affecting egg production and quality, whereas broilers presented respiratory and "nephritis-nephrosis" signs. The disease rapidly spread to all poultry-producing regions in the country, and in 1979, both the imports and the manufacturing of live vaccines against IB strains Mass, H120 and H52,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Genotyping; Infectious Bronchitis; PCR; Vaccination; Variants.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300009

Infectious bronchitis virus: detection and vaccine Strain differentiation by semi-nested RT-PCR
Provedor de dados: 89
Autores: Okino,CH; Montassier,MFSM; Givisiez,PEN; Furuyama,CRAG; Brentano,L; Montassier,HJ.
A semi-nested reverse transcription-polymerase chain reaction (Semi-N-RT-PCR) was developed and used to detect the S glycoprotein gene of infectious bronchitis virus (IBV) strains and to discriminate H120 vaccine strain from other strains. Viral RNA was extracted from the allantoic fluid of chicken embryos and from tissues of chickens experimentally infected with different strains of IBV. Amplification and identification of the viral RNA was performed using two sets of primers complementary to a region of the S glycoprotein gene in the Semi-N-RT-PCR assay. The pair of primers used in the first PCR consisted of universal oligonucleotides flanking a more variable region of S1-S2 gene. The second primer pair was used in the Semi-N-RT-PCR and was comprised of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Detection; Differentiation; Infectious bronchitis virus; Semi-nested RT-PCR; Vaccine strain.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100010

Infectious bronchitis virus: dominance of ArkDPI-type strains in the United States broiler industry during the last decade
Provedor de dados: 89
Autores: Toro,H.
In the United States, more than 90% of chicken meat is produced in the southeastern states, and most egg production resides in the eastern half of the country and Texas. Several molecular epidemiological studies have indicated that most infectious bronchitis (IB) virus (IBV) isolates obtained from outbreaks of respiratory disease in these regions correspond to Ark-type IBV in spite of extensive vaccination programs which include IBV ArkDPI-derived vaccines. Accumulating evidence suggests that Ark-type strains may have a distinct capacity to circumvent preventive measures. Two strategies by which Ark-type IBV strains may maintain a high prevalence in commercial chickens are: (1) Unusually high genetic and phenotypic variability, and (2) synergism with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ark; Arkansas; Chicken; Coronavirus; Infectious Bronchitis Virus.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200002

Infectious bronchitis virus in Asia, Africa, Australia and Latin America: history, current situation and control measures
Provedor de dados: 89
Autores: Wit,JJ (Sjaak) de; Cook,JKA; van der Heijden,HMJF.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Control; Infectious bronchitis virus; History; Variants.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200004

Infectious bursal disease: evaluation of maternal immunity and protection by vaccination of one-day old chicks against challenge with a very virulent virus isolate
Provedor de dados: 89
Autores: Moraes,HLS; Salle,CTP; Nascimento,VP; Salle,FO; Rocha,ACGP; Souza,GF; Furian,TQ; Artencio,JO.
Broiler chicks belonging to two poultry companies, A and B, with different breeders' vaccination programs were challenged with a very virulent strains of infectious bursal disease virus (vvIBDV), genotyped as G11. Birds were separated in four groups, two vaccinated at the first day of life and two unvaccinated. They were then challenged at the 1st, 4th, 7th, 10th, 13th, 16th, 19th and 22nd days. At every day of challenge, before and after the procedure, the following data were collected from each group: Bursa of Fabricius (BF) relative weight, BF diameter, BF for histologie examination, serum for measuring antibodies against IBDV through the ELISA and clinical evaluation of IBD. The results obtained have shown a non-significant drop in antibody level...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious bursal disease; Very very virulent IBD virus; Vaccination; Maternal immunity.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100009

Infectious bursal disease: evaluation of pathogenicity of commercial vaccines from Brazil in specific pathogen free chichens
Provedor de dados: 89
Autores: Moraes,HLS; Salle,CTP; Padilha,AP; Nascimento,VP; Souza,GF; Pereira,RA; Artencio,JO; Salle,FO.
Infectious Bursal Disease (IBD) is a chicken disease economically important for the poultry industry in function of the immune depression that it causes. Disease control is made with different vaccines and vaccination programs. In present work, the pathogenicity of 3 intermediate vaccines (I1, I2 and I3), 2 intermediate more pathogenic (IP1 and IP2) and 3 vaccines containing strong virus (F1, F2 and F3) was evaluated. Birds vaccinated with IP1, IP2, F1, F2 and F3 showed significantly lower bursa size in relation to control animals and animals vaccinated with I1, I2 and I3. On the other hand, vaccines I1 and I3 induced antibody titers higher than the control and lower than I2, IP1, IP2, F1, F2 and F3. Histological scores showed that vaccines I1, I2 and I3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bursa of Fabricius; Infectious bursal disease; Pathogenicity; Vaccines.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400009

Infectious Bursal Disease: Pathogenicity and Immunogenicity of Vaccines
Provedor de dados: 89
Autores: Camilotti,E; Moraes,LB; Furian,TQ; Borges,KA; Moraes,HLS; Salle,CTP.
ABSTRACT The Infectious Bursal Disease (IBD) is a contagious viral disease that affects young chickens and may cause high morbidity and mortality. As the virus is very resistant to the environment, vaccination is required in case of high infection pressure. Due to variations in the virulence degree of the vaccines available to control IBD, this study aimed at evaluating the pathogenicity and immunogenicity of three types of vaccines. In total, 220 one-day-old specific pathogen free (SPF) chickens were immunized with recombinant, immune-complex and intermediate vaccines, or not vaccinated (55 birds per group) and challenged with IBD G11 strain on day 25. On days 25, 30, and 35, the Bursa of Fabricius (BF) were submitted to gross and histological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious Bursal Disease; Chickens; Vaccine; Immunity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200303

Infectious bursal disease virus: case report and experimental studies in vaccinated and unvaccinated SPF chickens and commercial broiler chicks
Provedor de dados: 89
Autores: Scanavini Neto,H; Ito,NMK; Miyaji,CI; Lima,E de A; Okabayashi,S; Corrêa,ARA; Eleutério,GC; Zuanaze,MA.
IBDV Gm 11 (Simbios eleven-molecular group) has been detected since 1997 in many farms of commercial broilers and layers causing high mortality (2 to 15%) and severe macro and microscopic damage in cloacal bursae, spleen, thymus, kidney and liver. Five serial passages of 2050/97-Gm 11 IBDV sample by CAM route in SPF chicken's embryonated eggs did not elicit increased embryo mortality. High mortality (100%) of 21 day-old SPF leghorn chickens and severe bursal and splenic lesions were seen from 24 up to 48 hours after eye-drop inoculation of 2050/97 strain (50 mL of 10-2 dilution of 10% bursae homogenate). Mortality was not detected when vaccinated SPF and broiler chickens were inoculated. One dead bird was found among ten challenged unvaccinated broilers....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Challenge; Histopathology; IBD; Pathogenicity; Serology.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100006

Infectious laryngotracheitis: a review
Provedor de dados: 89
Autores: Hidalgo,H.
Infectious laryngotracheitis (ILT) herpesvirus continues to cause outbreaks of respiratory disease in chickens world-wide. Sporadic cases of ILT occur in all classes of birds, including hobby/show/game chickens, broilers, heavy breeders, and commercial laying hens. These epornitics of ILT tend to occur where there are large populations of naïve, unvaccinated birds, i.e., in concentrated areas of broiler production. ILT virus can be transmitted through (a) chickens with acute upper respiratory tract disease, (b) latently infected "carrier" fowls, and (c) fomites and contaminated persons. Chicken flocks which are endemic infected with ILT virus occur only in some regions of countries or even in particular multiple-age production farms. In these cases...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosecurity; Broiler breeders; ILT virus; Laryngotracheitis; Laying hens; Vaccines.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300001

Influence of a Commercial Hatchery Thermal Environmental on the Heat Loss of Fertile Broiler Eggs
Provedor de dados: 89
Autores: Silva,GF; Pereira,DF; Salgado,DD.
ABSTRACT The objectives of this study were to monitor the thermal environment of different hatchery locations during the transfer of fertile eggs from the setter and to the hatcher, to measure egg heat loss, and to determine its effects on hatchery results. In total, 1,728 fertile eggs of Cobb broiler breeders were divided into two treatments. In treatment 1 (T1), after 19 days of incubation, eggs were removed from the incubator and transferred to the hatcher in aninsulated box, and in treatment 0 (T0), eggs were transferred with no thermal insulation (T0). The duration of egg transfer was 10 minutes. Eggs were photographed using a thermographic camera at the exit of the setter, arrival at and exit from the candling room, and arrival at the hatcher. Based...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermographic image; Thermal insulation; Egg transfer.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600033

Influence of Artemisia Annua on Broiler Performance and Intestinal Microflora
Provedor de dados: 89
Autores: Panaite,TD; Criste,RD; Vlaicu,PA; Saracila,M; Tabuc,C; Olteanu,M; Turcu,RP; Buleandră,M.
ABSTRACT The present study aimed to investigate the effect of Artemisia (Artemisia annua) supplementation as essential oil and powder, in broiler diet on performance and intestinal microflora. One hundred and eighty Cobb 500 broiler chicks assigned to three experimental groups (six replicates with 10 broilers per replicate) were housed in an environment-controlled house. Compared to the control diet, the experimental diets included 0.05 g kg-1 Artemisia essential oil (E1), 0.05 g kg-1 essential oil plus 0.1 g kg-1 powder of Artemisia (E2), respectively. Growth performance was monitored throughout days 14-42. Artemisia supplementation (E1, E2) did not influence growth performance of the chicks. Compared to the C and E1, the chicks from E2 group had a lower...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemisia annua; Broilers; Performance; Microflora.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400326

Influence of artificial lighting on the performance and egg quality of commercial layers: a review
Provedor de dados: 89
Autores: Jácome,IMTD; Rossi,LA; Borille,R.
In Brazil, the egg production chain produces fresh eggs for the consumer market and for processing. Layers are housed in battery cage systems. Rearing and development farms are separate from egg-production farms. Considering the recent advance of Brazilian chicken egg production, scientific knowledge on management practices are required to disseminate and to consistently apply this knowledge to improve such practices. Artificial lighting is widely used in poultry reproduction, both in the production of hatchable eggs and of commercial eggs. Light is required for the release of hormones responsible for reproduction; however, the best lighting practices to stimulate laying poultry during the reproductive period still need to be determined, with the aim of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Photostimulation; Lighting programs; Sexual maturity; Egg production.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400001

Influence of Covering Reused Broiler Litter with Plastic Canvas on Litter Characteristics and Bacteriology and the Subsequent Immunity and Microbiology of Broilers
Provedor de dados: 89
Autores: Mesa,D; Lourenço,M; Souza,A; Bueno,A; Pereira,A; Sfeir,M; Santin,E.
ABSTRACT In broiler production, the litter is reused for consecutives flocks, and it is treated during down time between flocks to reduce its microbial load. Although covering the litter with a plastic canvas is a common litter treatment in the field, there is little scientific information available on its efficacy. The aim of this study was to evaluate the effects of covering broiler litter with a plastic canvas for eight days on litter microbiological, physical, and chemical parameters, and on the intestinal microbiota and immunity of broilers. In the first trial, reused litter from a previous flock was distributed into three treatments, with six replicates each: L1 (negative control, litter free from Salmonella Enteritidis (SE) and Eimeria maxima (EM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Cytokines; Lactobacillus; Macrophages; Salmonella.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400563

Influence of delayed placement and dietary lysine levels on small intestine morphometrics and performance of broilers
Provedor de dados: 89
Autores: Franco,JRG; Murakami,AE; Natali,MRM; Garcia,ERM; Furlan,AC.
This experiment studied the influence of delayed placement (HI) and digestible lysine level (DL) on the morphometrics of the intestinal mucosa and on the performance of broilers. A total number of 1,705 Cobb 500 male chicks were used in a completely randomized experimental design in a factorial arrangement with four HI (12, 24, 36 and 48h), and two DL level in the starter diet (1.143 and 1.267%), with four replicates and 55 birds per experimental unit. The amino acids methionine-cystine, threonine, and tryptophan were balanced according to the ideal protein (IP) concept. Small intestine morphometrics was evaluated using histology slides of the duodenum and jejunum. There was no interaction between HI and DL levels for any of the studied parameters. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abdominal fat; Intestinal mucosa; Ideal protein; Yolk sac; Villi.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400006

Influence of Dietary Energy Level on Hepatic70-kDa Heat Shock Protein Expression in Broiler Chickens Submitted to Acute Heat Stress
Provedor de dados: 89
Autores: Gabriel,JE; Ferro,MIT; Ferro,JA; Silva,MM; Givisiez,PEN; Macari,M.
This experiment was carried out to study the effect of dietary energy on the colonic temperature and hepatic Hsp70 content in broiler chicken at room temperature and after heat stress conditions. Broiler chickens were reared up to 51 days of life, and fed diets containing high (HE -13,186 kJ ME/kg) or low (LE -12,139 kJ ME/kg) energy. At 21 and 51 days of age, the colonic temperature was measured at room temperature and liver samples were obtained for Hsp70 quantification by Western blotting analysis. It was also investigated at these ages the time course response of colonic temperature and hepatic Hsp70 level during heat stress (35º C/5 h). The data showed that at early age, at room temperature, colonic temperature or hepatic Hsp70 levels were not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicken; Dietary energy level; Heat shock protein; Heat stress.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300008

INFLUENCE OF DIETARY GRADED LEVELS OF DIGESTIBLE LYSINE AND LOWERING ENERGY TO PROTEIN RATIO ON THE GROWTH PERFORMANCE OF BROILERS UNDER SUBTROPICAL SUMMER CONDITIONS
Provedor de dados: 89
Autores: Mushtaq,MMH; Ahmad,G; Parvin,R.
ABSTRACTThe digestible lysine requirement for the growth performance of broilers fed diets with decreasing energy to protein ratio and reared under subtropical summer conditions were determined. Treatments consisted of five wheat-based diets with five levels (0.90, 0.95, 1.00, 1.05 and 1.10%) of digestible lysine (DL) and lowering energy to protein ratio (EPR; 13.6, 12.8, 12.0, 11.4 and 11.0), with five replicates of 80 birds each (n = 2000). Body weight gain (BWG) significantly increased by increasing DL levels during wk 1 (p&lt;0.001), while 1.05% DL promoted the highest BWG during the whole experimental period (p&lt;0.01). Increasing DL level resulted in significant reduction in feed intake (FI) and BWG to DL intake ratio (BWG:DLI) during wk 1-3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Digestible lysine; Energy to protein ratio; Growth performance; Subtropical summer conditions.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300381

Influence of dietary non-phytate phosphorous levels and phytase supplementation on the performance and bone characteristics of broilers
Provedor de dados: 89
Autores: Karimi,A; Bedford,MR; Sadeghi,Gh; Ghobadi,Z.
Precise phosphorus nutrition is important for significant reductions in both P pollution and ration costs. The influence of different levels (%) of dietary nPP fed from 0 to 20 d (0.45, 0.40, 0.35, 0.30, 0.25, compared with feeding 0.20 nPP with and without 500 F.T.U. of phytase per kg of diet) and from 21 to 36 d of age (0.414, 0.364, 0.314, 0.264, 0.214, compared with 0.164 nPP with and without 500 F.T.U. of phytase per kg of diet) were evaluate using a total of 588 day-old commercial broiler chicks. Each treatment was replicated four times in a completely randomized design. Body weight (BW), daily gain (DG), feed intake (DFI), feed conversion ratio, plasma P level and bone characteristics were determined, and from these data the P equivalency of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone ash; Broiler; Phosphorous; Phytate; Phytase.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100007

Influence of Effective Microorganism Supplementation to the Drinking Water on Performance and Some Blood Parameters of Laying Hens Exposed to A High Ambient Temperature
Provedor de dados: 89
Autores: Şahan,Z; Kutay,H; Çeli̇k,L.
ABSTRACT In the present study, seventy-two 30-week-old laying hens (Brown Hisex) were separated into two groups (control and treatment) and fed with a standard layer diet. In the treatment group the amount of effective microorganism (EM) added to the drinking water is equal to1000 ppm EM dose. Throughout the 8-week study period, 16 h thermoneutral (20-22 ºC) and 8 h hot (35-37 ºC) environmental temperature regime was applied daily. The results indicated that EM supplementation affected performance and some egg quality characteristics of layers exposed high environmental temperature. Feed intake and conversion ratio, yolk index, albumen index, yolk colour b, Haugh unit were decreased by supplemental EM. Serum glucose, cholesterol, triglycerides, calcium,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hen; Effective microorganisms; High temperature; Performance; Egg production and quality.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100306

Influence of egg pre-storage heating period and storage length on incubation results
Provedor de dados: 89
Autores: Silva,FHA; Faria,DE; Torres,KAA; Faria Filho,DE; Coelho,AAD; Savino,VJM.
This experiment aimed at evaluating the influence of different heating times of settable eggs of Cobb 500® broiler breeders before submitting them to different storage periods on egg weight loss, embryo mortality, and hatchability. A total number of 1,980 eggs were distributed in a completely randomized experimental design with a 3 x 3 factorial arrangement, comprising nine treatments with 22 replicates of 10 eggs each. The following factors were analyzed: pre-storage heating periods (0, 6, 12 hours at 36.92°C) and storage periods (4, 9, 14 days at 12.06°C). After storage, eggs were incubated under usual conditions, and were transferred to the hatcher at 442 hours of incubation. Eggs were weighed before heating, incubation, and transference to determine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Egg weight loss; Embryo development; Embryo mortality; Hatch.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100003

Influence of egg pre-storage heating period and storage length on the digestive tract of newly-hatched broiler chicks
Provedor de dados: 89
Autores: Silva,FHA; Faria,DE; Torres,KAA; Faria Filho,DE; Coelho,AAD; Savino,VJM.
An experiment was carried out to evaluate the effect of different heating times of settable eggs of Cobb 500® broiler breeders before submitting them to different storage periods on body weight, digestive tract organ weights, and intestinal mucosa morphology of newly-hatched chicks. Settable eggs were distributed in a completely randomized experimental design with a 3 x 3 factorial arrangement: pre-storage heating periods (0, 6, 12 hours at 36.92°C) and storage periods (4, 9, 14 days at 12.06°C). Body weight and relative weights of the yolk sac, heart, liver, proventriculus+gizzard, and intestinal segments were measured in chicks hatching at 480 and 498 hours of incubation. Villi height, width and perimeter, and crypt depth (ìm) were measured in duodenal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Embryo development; Incubation; Intestinal mucosa; Morphometrics.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100004

Influence of environmental temperature and electrolyte balance on the performance of quails (Coturnix Coturnix Coturnix)
Provedor de dados: 89
Autores: Barbosa Lima,R; Silva,JHV da; Givisiez,PEN; Martins,TDD; Saraiva,EP; Costa,FGP; Macari,M.
High environmental temperatures have a negative effect on the production efficiency of poultry reared in hot climates. This study evaluated the efficiency of electrolyte supplementation under high environmental temperature conditions by manipulating water and feed electrolyte balance (EB) on the survival and performance of European quails. In experiment 1, a completely randomized experimental design was applied in a 4 x 2 factorial arrangement. Treatments consisted in four feed EB values (0, 120, 240, 360 mEq/kg), and two environmental temperatures (25 and 34 ºC). Feed electrolyte balance was manipulated by the addition of sodium bicarbonate and ammonium chloride. In experiment 2, birds were randomly distributed according to a 5 x 2 factorial arrangement....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonium chloride; Heat stress; Sodium bicarbonate.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300004

Influence of european quail breeders age on egg quality, incubation, fertility and progeny performance
Provedor de dados: 89
Autores: Santos,TC; Murakami,AE; Oliveira,CAL; Moraes,GV; Stefanello,C; Carneiro,TV; Feitosa,CCG; Kaneko,IN.
The influence of age (85, 140, and 270 days) of European quails breeders on the egg quality and hatching, fertility and progeny performance was evaluated. The experimental design was completely randomized in a 3x3 factorial arrangement (females' age x males' age), with ten replicates and six birds per experimental unit (four females and two males). Egg production and quality were determined during 3 periods of 14 days and incubation parameters were evaluated in eggs obtained in five consecutive days. The live performance of the progenies was analyzed until 35 days. There was no effect of male age or any interaction between the age of males and females for the evaluated variable. The female's age influenced egg production, egg weight and chick weight, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeders; Egg quality; Hatching; Sperm-egg; Perivitelline layer; Quail.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100049

Influence of feeding time on sexual maturity and carcass composition in female broiler breeders
Provedor de dados: 89
Autores: Avila,VS de; Penz Jr.,AM; Rosa,PS; Brum,PAR de; Guidoni,AL; Ledur,MC.
One thousand two hundred and ninety six Arbor Acres females and 144 males were used to study the influence of feeding time on sexual maturity and carcass composition. Treatments were: T1 = feeding at 6:30 am, T2 = 50% feeding at 6:30 am and 50% at 3:30 pm (dual), T3 = feeding at 11:00 am, T4 = feeding at 3:30 pm. Nutrition and management were as recommended to the commercial line. Variables studied were: sexual maturity at 5% production (SM), mean egg production percentage (PEP) body weight (BW), carcass composition, tibia weight (TIBW) and tibia calcium (Ca) and phosphorus (P) contents. Analysis of variance was used, and the means were compared using Student's t test. T2 females reached SM at 25.92 weeks, which was earlier (p&lt;0.01) than the other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Carcass composition; Egg production; Feeding time; Sexual maturity.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300006

Influence of genetic strain and season on back scratch lesions in broilers
Provedor de dados: 89
Autores: Pilecco,M; Almeida Paz,IC de L; Tabaldi,LA; Nääs,I de A; Garcia,RG; Caldara,FR; Alves,MCF; Felix,GA.
This study aimed at evaluating the influence of genetic strain, sex, and season on the incidence of back scratches during the rearing period. Male and female broilers of two genetic strains reared during the hot or cold season were evaluated. This meta-analysis included 894 samplings in 351 broiler houses of contracted farms located in the state of Mato Grosso do Sul, Brazil, in 2010. Broilers of all ages (1 to 43 days) were sampled, capturing 2% of the birds in the house at each sampling. Each flock was evaluated twice, in 21-day intervals. Broilers were reared as single-sex flocks; there were no straight-run flocks. Scratch lesions were classified as present or absent. Strain A broilers presented lower scratch rates (p &lt; 0.05) than strain B birds....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Carcass quality; Management.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400004

Influence of glutamine and vitamin E on the performance and the immune responses of broiler chickens
Provedor de dados: 89
Autores: Sakamoto,MI; Murakami,AE; Silveira,TGV; Fernandes,JIM; Oliveira,CAL de.
This study aimed at evaluating the influence of Glutamine (Gln) and Vitamin E (VE) supplementation on the performance and immune response of broilers. A completely randomizes experimental design with a 2 x 3 (VE x Gln) factorial arrangement was used. VE was supplemented at 10 and 500 mg/kg feed, with or without Gln (1%) addition, and two periods of supplementation in the starter diets (1-7 and 1-14 days of age), with five replicates of 50 birds each. The analyzed parameters were: live performance (weight gain, feed intake, and feed conversion ratio); relative weights of the spleen, bursa, and thymus; antibody titers (with sheep red blood cells suspension - SRBC) and cutaneous basophilic hypersensivity (CBH). Data were submitted to the analysis of variance,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibodies; Sheep red blood cells; Cutaneous basophilic hypersensitivity.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400007

Influence of Levels of Dietary Fiber Sources on the Performance, Carcass Traits, Gastrointestinal Tract Development, Fecal Ammonia Nitrogen, and Intestinal Morphology of Broilers
Provedor de dados: 89
Autores: Sittiya,J; Yamauchi,K; Nimanong,W; Thongwittaya,N.
ABSTRACT The present study was conducted to investigate the effects of dietary fiber source levels on the fecal ammonia nitrogen, growth performance, carcass traits, gastrointestinal tract development, and intestinal morphology of broilers. A total of 420 one-day-old unsexed broiler chicks were individually weighed and randomly divided into 5 groups, each with seven replicates of twelve chicks. Rice hulls (RH) and soybean hulls (SH) were ground through a hammer mill with a 2-mm screen. The RH and SH experimental diets were as follows: 0% (control); 2.5% RH; 2.5% SH; 5% RH; and 5% SH. No significant differences were found in growth performance and fecal ammonia nitrogen among the dietary treatment groups (p&gt;0.05). Compared with the control, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rice hulls; Soybean hulls; Broilers; Intestinal morphology; Ammonia nitrogen.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100315

Influence of Moringa Oleifera Leaf Meal Used as Phytogenic Feed Additive on the Serum Metabolites and Egg Bioactive Compounds in Commercial Layers
Provedor de dados: 89
Autores: Ahmad,S; Khalique,A; Pasha,TN; Mehmood,S; Ahmad,S Sohail; Khan,AM; Hussain,K.
ABSTRACT Phytogenic feed additives have been increasingly used in the last decade, and several plants and their metabolites have been investigated for the said purpose. In this context, present study aimed at evaluating the effects of Moringa oleifera as feed additive on layer performance, and egg bioactive compound levels and nutrient profile. HyLine W36 layers (n=200), 50 weeks of age, were randomly distributed in four treatments with five replicates of ten birds each. Four isocaloric (2725 kcal/kg) and isonitrogenous (CP 16%) diets were formulated and supplemented with 0, 0.5, 1.0, or 1.5% (w/w) of dried Moringa oleifera leaf powder (MLM). The results showed positive effects of MLM on egg production, egg mass, and feed conversion ratio, but negative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-carotene; Moringa leaf; Quercetin; Production performance; Serum biochemistry.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200325

Influence of Pine Bark Tannin on Bacterial Pathogens Growth and Nitrogen Compounds on Changes in Composted Poultry Litter
Provedor de dados: 89
Autores: Arzola-Alavarez,C; Castillo-Castillo,Y; Anderson,RC; Hume,ME; Ruiz-Barrera,O; Min,BR; Arzola-Rubio,A; Beier,RC; Salinas-Chavira,J.
ABSTRACT To study the antimicrobial and uric acid-preserving activity of pine bark tannin on poultry litter composting, antibiotic-free wood chip-based poultry litter was distributed (11 g) to 50-mL conical centrifuge tubes and immediately amended with 1.3 mL0.4 M sodium phosphate buffer (control) or with 1.3 mL condensed tannins from pine bark (Pinus palustris; 9 % tannin wt/vol in water). All tubes (n = 3 tubes/treatment) were inoculated with a novobiocin and naladixic acid-resistant Salmo-nella typhimurium (STNN) to achieve 3.0 log10 CFU/g and incubated at 37oC for 3 days to simulate an initial compost period. Wildtype E. coli and the challenge STNN strain as well as concentrations of ammonia, uric acid and urea were measured on days 0 and 3. Pine bark...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry litter; Condensed tannins; Uric acid; Bacterial pathogens.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100305

Influence of sex, age, and fasting on blood parameters and body, bursa, spleen and yolk sac weights of broiler chicks
Provedor de dados: 89
Autores: Pires,DL; Malheiros,EB; Boleli,IC.
The effects of water and feed fasting for 24, 48 and 72 hours post-hatching on blood parameters (mean corpuscular volume, MCV; red blood-cell, RBC; hematocrit, HCT; hemoglobin, HGB; plasma glucose, CGP; plasma total protein, PP, and differential leukocytes count), and on body, liver, spleen, bursa, and yolk sac weights were analyzed. Erythrogram data were obtained with a blood cell counter. Total plasma protein and plasma glucose were determined by using the Bradford method (1976) and a glucose PAP liquiform kit (Labtest, cat. n. 84), respectively. Specific leukocyte counts were carried out on blood smears stained with Rosenfeld solution. According to the obtained data, water and feed post-hatching fasting reduced MCV values, which also were lower in males...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood parameters; Broiler chicks; Bursa of Fabricius; Post-hatching fasting.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400005

Influence of Sex on the Physical-chemical Characteristics of Abdominal Chicken Fat
Provedor de dados: 89
Autores: Marx,SD; Soares,JM; Prestes,RC; Schnitzler,E; Oliveira,CS; Demiate,IM; Backes,GT; Steffens,J.
ABSTRACT The aim of this study was to determine if sex influenced abdominal fat yield, chemical composition, pH, color, fatty acid profile, and stability (by Differential Scanning Calorimetry - DSC) of Cobb chickens. Abdominal fat yields of 1.86 and 1.49% were obtained for females and males, respectively. Abdominal fat lipid contents of 70.68 and 74.36 g/100g, moisture content of 27.87 and 24.09 g/100g, protein content of 0.91 and 0.95 g/100g, ash content of 0.038 and 0.041 g/100g were obtained in males and females, respectively. Fat pH was not different between sexes, with values of 6.71 for males and 6.63 for females (p&lt;0.05). Color L* values of 58.67 and 55.42, a* values of 4.95 and 3.44, and b* values of 7.36 and 8.18 were obtained for males and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acids; Raw material; DSC; Byproducts.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200269

Influence of sulfur amino acid levels in diets of broiler chickens submitted to immune stress
Provedor de dados: 89
Autores: Rubin,LL; Ribeiro,AML; Canal,CW; Silva,IC; Trevizan,L; Vogt,LK; Pereira,RA; Lacerda,L.
Several changes in amino acid levels occur during an infection. As a rule, glycine, taurine and serine levels diminish considerably, while cysteine levels increase. Such changes may be attributed to the intense consumption of sulfur amino acids (SAA- methionine+cysteine) during infectious challenge. Methionine plays an important role in humoral and cellular immune responses. It has been suggested that such effect is exerted by intracellular glutathione and cysteine levels. Four-hundred thirty-two day-old Ross male broiler chickens were fed (from 1 to 42 days of age) three SAA levels in the diet (0.72, 0.82, and 0.92% from 1 to 21 days of age; 0.65, 0.75, and 0.85% from 22 to 42 days of age) and submitted to two immunological stimulus series. Vaccines...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immune system; Immunological stimulus; Methionine; Performance; Poultry.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100008

Influence of Thermally Oxidized Vegetable Oil and Animal Fats on Growth Performance, Nutrient Digestibility, Carcass Parameters and Meat Quality of Broilers
Provedor de dados: 89
Autores: Kamran,J; Mehmood,S; Mahmud,A; Saima,.
ABSTRACT The current study was planned to investigate the influence of soy oil, oxidized soy oil, poultry oil single refined and poultry oil double refined on the performance of broilers chicken. A total of two hundred and forty, day-old broiler chicks were divided into 4 treatments in such a way that each treatment had six replicates and each replicate had ten chicks. The experimental treatments were separated with the usage of single refined poultry oil, double refined poultry oil, oxidized soy oil and soy oil in the diet of broilers. In both starter and overall periods average body weight was higher (p&lt;0.05) for birds which were on a basal diet containing soy oil as compared to other diets. Similarly, feed intake was higher (p&lt;0.05) for birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oxidized soy oil; Fresh soy oil; Poultry refined oil; Growth; Digestibility; Broilers.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200318

Influência do Genótipo e do Sexo Sobre o Valor Hematócrito em Galinhas Reprodutoras Pesadas
Provedor de dados: 89
Autores: Rosário,MF; Silva,MAN; Martins,E; Savino,VJM; Coelho,AAD.
Este trabalho avaliou o efeito do genótipo e do sexo sobre os valores de hematócrito em galinhas para corte. Foram utilizados 180 reprodutores, provenientes de 18 genótipos experimentais, dos quais amostras de sangue foram coletadas para determinação da porcentagem de células sanguíneas. Para o fator genótipo foi possível distinguir dois grupos, com médias variando de 45,83 a 41,69% e 41,24 a 37,21%. Já para o fator sexo, os valores apresentaram diferença significativa, com valores de 46,20 ± 4,14% para machos e 35,74% ± 3,16% para fêmeas. Concluiu-se que o genótipo e o sexo influenciaram o valor hematócrito em galinhas reprodutoras pesadas, além de agrupar todos os genótipos em dois grupos.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Porcentagem de células sanguíneas; Genótipos de aves; Melhoramento genético; Frangos de corte.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300011

Influenza Aviária: Uma Revisão dos Últimos Dez Anos
Provedor de dados: 89
Autores: Martins,NRS.
A influenza aviária é doença exótica no Brasil. O sistema de vigilância implementado pelo Programa Nacional de Sanidade Avícola (PNSA) mantém monitoração permanente das aves das principais espécies domésticas, tanto do material genético importado para a indústria avícola, por exemplo, da espécie das galinhas (Gallus gallus formadomestica), perus (Meleagris gallopavo formadomestica), codornas (Coturnix coturnix japonica), patos (Anas), primários (elite), bisavós e avós para postura ou corte, como aves de espécies de exploração mais recente, exóticas, por exemplo avestruzes (Struthio camelus) ou nativas, por exemplo emas (Rhea americana). Os plantéis de reprodutores em produção são também acompanhados por amostragens periódicas, conforme previsto no PNSA,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza aviária; Vírus; Aves (Aves); Frangos de corte; Vacina.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200001

Infrared thermography applied to the evaluation of metabolic heat loss of chicks fed with different energy densities
Provedor de dados: 89
Autores: Ferreira,VMOS; Francisco,NS; Belloni,M; Aguirre,GMZ; Caldara,FR; Nääs,IA; Garcia,RG; Almeida Paz,ICL; Polycarpo,GV.
Brazil must comply with international quality standards and animal welfare requirements in order to maintain its position as world's largest exporter of poultry meat. With the scenario of global climate change there is the forecast of occurrence of extreme events with characteristics of both excess cold and heat for several regions of the country. This study aimed to evaluate the effectiveness of using images of infrared thermography to evaluate the loss of sensible heat in young broilers fed different dietary energy levels. Twenty birds were reared in a house with appropriate brooding using infrared lamps. Birds were distributed in a completely randomized experimental into two treatments: T1 (control diet with 2950 kcal ME/kg-1), and T2 (high-energy diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy-dense diet; Infrared thermal imaging; Metabolic heat; Poultry; Wellbeing.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200005

Ingredient classification according to the digestible amino acid profile: an exploratory analysis
Provedor de dados: 89
Autores: Faria Filho,DE; Torres,KAA; Campos,DMB; Vieira,BS; Urbano,T; Rosa,PS; Ferraudo,AS.
This study aimed: 1) to classify ingredients according to the digestible amino acid (AA) profile; 2) to determine ingredients with AA profile closer to the ideal for broiler chickens; and 3) to compare digestible AA profiles from simulated diets with the ideal protein profile. The digestible AA levels of 30 ingredients were compiled from the literature and presented as percentages of lysine according to the ideal protein concept. Cluster and principal component analyses (exploratory analyses) were used to compose and describe groups of ingredients according to AA profiles. Four ingredient groups were identified by cluster analysis, and the classification of the ingredients within each of these groups was obtained from a principal component analysis,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicken; Cluster analysis; Ideal protein; Ingredients; Principal component analysis.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300009

Inheritance of a new albino mutation in Brazilian free-range black chickens
Provedor de dados: 89
Autores: Jorge,W; Cunha,LM.
A genetically recessive albino mutation, which inhibits pigment development in the eyes, skin, and feathers of domestic chickens from Brazil, is described. This mutation appeared in a flock of completely black chickens of a private breeder. There are no information on the origin, breed, or specific line of the birds. Pigment inhibition is apparently complete in the feathers and eyes. Bird sight is very impaired, but no histological examination was carried out. Ratios obtained in F2 and backcrossed birds indicate that a single autosomal recessive gene is responsible for the condition. The data suggest that the absence of melanin in the eyes, skin, and feathers (symbol cc) is a mutation of the pigmented C wild gene.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albinism; Chicken; Inheritance; Melanin.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300003

Inhibitory Effects of Some Flavonoids on Thioredoxin Reductase Purified from Chicken Liver
Provedor de dados: 89
Autores: Türkoğlu,E.A; Kuzu,M; Ayasan,T; Inci,H; Eratak,SV.
ABSTRACT Thioredoxin reductases (TrxRs) are selenocysteine-containing flavoenzymes that reduce Trxin NADPH-dependent manner. In the view of the direct vital role of TrxR in a wide range of biochemical and physiological processes, methods to inhibit this enzyme are clinically important. TrxR has recently emerged as a new candidate in anticancer drug investigations because of overexpression in tumorous cells. In this study, TrxR from chick liver was purified 94.6-fold with a yield of 4.86% and a specific activity of 0.19 EU/mg. KM and Vmax values of TrxR for DTNB were calculated as 0.9 mM and 0,03 EU/mL, respectively. Then, the effects of the flavonoids hesperidin, naringenin, chlorogenic acid, ferulic acid, naringin, 3,4-dihydoxybenzoic acid, and ellagic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flavonoids; Inhibitors; Natural products; Thioredoxin reductase.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200345

Initial identification and sensitivity to antimicrobial agents of Salmonella sp.isolated from poultry products in the state of Ceara, Brazil
Provedor de dados: 89
Autores: Oliveira,WF; Cardoso,WM; Salles,RPR; Romão,JM; Teixeira,RSC; Câmara,SR; Siqueira,AA; Marques,LCL.
The objective of this research was to isolate and to verify the sensitivity to antimicrobial agents of strains of Salmonella sp. isolated from poultry products in the state of Ceara, Brazil. A total number of 114 samples was collected from 63 broiler carcasses derived from two processing plants and two supermarkets, and 51 excreta samples were collected in broiler farms located in the state of Ceara, which used three live production stages. Each excreta sample consisted of a fresh excreta pool from 100 birds. Samples were submitted to microbiological analyses, and the isolated Salmonella strains were tested for antimicrobial sensitivity. No Salmonella was isolated from excreta samples, while broiler carcass samples showed a high contamination rate of11.8%....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella sp; Identification; Sensitivity; Poultry products.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300010

Insulin Promotes the Expression of the Gluconeogenic Rate-Limiting Enzymes Phosphoenolpyruvate Carboxykinase (Pepck) and Glucose 6-Phosphatase (G6pase) through PI3k/Akt/mTOR Signaling Pathway in Goose Hepatocytes
Provedor de dados: 89
Autores: Xiong,XP; Song,Q; Han,CC; Gan,W; He,F; Wei,SH; Liu,HH; Xu,HY.
ABSTRACT To identify what makes insulin have an activating or inhibiting role in gluconeogenesis in goose hepatocytes and whether insulin regulates PEPCK and G6Pase through the PI3k/Akt/mTOR pathway or not, goose primary hepatocytes were isolated and cultured in vitro. After 12h cultured in serum-free medium, hepatocytes were incubated for 24 h in the medium with no addition (control) or with the addition of50, 100, and 150 nM of insulin, 1000 nM NVP-BEZ235, or co-addition of 150nM insulin and 1000nM NVP-BEZ235. Glucose concentration and PEPCK and G6Pase expression were determined. The results showed that PEPCK and G6Pase mRNA levels and activities were up regulated in the 50, 100, and 150nM insulin treatments, while glucose concentration was not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: G6Pase; Insulin; PEPCK; PI3k/Akt/mTOR.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300395

Interactions Between Non-Allelic Loci and Their Effects on Categorized Meat Performance Traits in Ducks
Provedor de dados: 89
Autores: Dobek,A; Gornowicz,E; Moliński,IA; Grajewski,B; Lisowski,M; Szwaczkowski,T.
ABSTRACT Traits associated with meat performance are characterized by a complex inheritance model, including the effects of non-allelic interactions. The aim of this study was to estimate the significance of non-allelic interactions between pairs of loci in each of two alternative groups based on four important performance traits of ducks: body weight (BW), carcass yield calculated as the ratio of carcass weight to body weight (CY), breast and leg muscle yield as a fraction of carcass weight (BL-CW), and skin weight and abdominal fat, again as a fraction of carcass weight (SF-CW). The experimental material was based on an F2 cross between two parental lines: A-55 (Polish Peking) and GL-30 (French Peking). In total, 368 individuals were recorded. All of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duck; Categorized traits; Entropy analysis; Microsatellite markers.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200301

Interference of infectious bursal disease virus on antibody production against Newcastle disease and infectious bronchitis virus
Provedor de dados: 89
Autores: Cardoso,WM; Aguiar Filho,JLC; Romão,JM; Salles,RPR; Câmara,SR; Siqueira,AA; Oliveira,WF; Sobral,MHNR; Texeira,RSC.
This work has the objective of verifying the interference of infectious bursal disease virus in the antibody production against Newcastle disease virus and infectious bronchitis virus. The experiment was carried out with 640 day-old-chicks from a 42 weeks old hen flock. The birds were separated into eight experimental groups (n=80/group) and were submitted to different combinations of vaccinations, with live vaccines, to Newcastle disease, avian infectious bronchitis, and infectious bursal disease with diverse combinations of days of vaccination. We verified that the utilization of polyvalent vaccinal programs have a different efficacy comparing to monovalent vaccinations when Newcastle disease, infectious bronchitis, and infectious bursal disease...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antigenic variation; Polyvalent vaccinations; Viral interference.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300007

Interference of Salmonella typhimurium lipopolysaccharide on performance and biological parameters of broiler chickens
Provedor de dados: 89
Autores: Rauber,RH; Perlin,VJ; Fin,CD; Mallmann,AL; Miranda,DP; Giacomini,LZ; Nascimento,VP do.
This study was conducted to determine the interference of Salmonella typhimurium lipopolysaccharide (sLPS) on the performance, biological parameters, and histological evaluations of 198 one-day-old male broiler chickens divided into three treatments according to sLPS dose (0, 250, or 500 µg/application/bird) that was applied to the birds every other day, from 15 to 27 days of age. At the end of the experiment (28 days), significant effects were observed on body weight (R= -0.17 and P=0.05), total cholesterol serum levels(R=0.43 and p&lt;0.01), phosphorus (R=0.53 and P&lt;0.01), uric acid (R= -0.38 and P&lt;0.01), C-reactive protein (R=0.68 and p&lt;0.01), serum activity of aspartate aminotransferase (R=0.39 and p&lt;0.01) and alkaline phosphatase (R= -0.39...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry; Clinical biochemistry; Endotoxin; Body weight.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100011

Internal quality of conventional and omega-3-enriched commercial eggs stored under different temperatures
Provedor de dados: 89
Autores: Cedro,TMM; Calixto,LFL; Gaspar,A; Curvello,FA; Hora,AS.
The internal quality of conventional and ω-3 enriched commercial eggs stored at different temperatures was evaluated. Eggs derived from Isa Brown layers fed two different diets. In Group 1, 432 hens were fed throughout their productive life with a diet based on corn and soybean meal (production of conventional eggs). In Group 2, starting at 22 weeks of age, other 432 hens were fed a diet containing 1.5% of marine algae substrate and 1.8% of fish oil (production of ω-3 enriched eggs). The following parameters were evaluated: Haugh unit, yolk index, albumen pH, and yolk pH. There were no significant differences between conventional and enriched with ω-3 eggs as to internal quality parameters. Only the interaction between storage time and temperature was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commercial eggs; Hens; Omega-3; Storage; Temperature.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300007

Intestinal and pancreas enzyme activity of broilers exposed to thermal stress
Provedor de dados: 89
Autores: Routman,KS; Yoshida,L; Frizzas de Lima,AC; Macari,M; Pizauro Jr.,JM.
Thirty-two Hubbard broilers were raised under commercial husbandry to evaluate the effect of temperature exposure (26 and 35ºC) on the activity of digestive enzymes at different ages (23 and 46 days) and different diet energy levels (2,900 and 3,200 kcal ME/kg). Data were analyzed in a 2x2x2 factorial arrangement (energy/temperature/age) in a completely randomized design. Animals were slaughtered after four hours of heat exposure for sampling of an intestinal segment, to extract alkaline phosphatase, and pancreas, to extract amylase, lipase and trypsin. The activity of intestinal alkaline phosphatase was influenced by energy level and animal age. Energy level of diet and environmental temperature interfered on the activity of pancreatic amylase. Lipase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Digestive enzymes; Thermal stress.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100003

Intestinal integrity and performance of broiler chickens fed a probiotic, a prebiotic, or an organic acid
Provedor de dados: 89
Autores: Fernandes,BCS; Martins,MRFB; Mendes,AA; Milbradt,EL; Sanfelice,C; Martins,BB; Aguiar,EF; Bresne,C.
This study aimed at evaluating the intestinal integrity, using light and scanning electron microscopy (SEM), and the performance of broiler chickens fed additives alternative to antimicrobials. A total of 1080 male chicks were distributed according to a completely randomized experimental design, with six treatments with six replicates of 30 birds each. The following treatments were evaluated: basal diet (control), basal diet supplemented with an antimicrobial, basal diet supplemented with a probiotic, basal diet supplemented with a prebiotic, basal diet with a symbiotic, and basal diet supplemented with organic acids. Weight gain, feed intake, feed conversion ratio and livability were recorded when broiler chickens were 10, 21, 35, and 42 days old. On day...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scanning electron microscopy; Morphometrics; Intestinal mucosa; Intestinal wall.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400012

Intestinal mucosa development in broiler chickens fed natural growth promoters
Provedor de dados: 89
Autores: Pelicano,ERL; Souza,PA; Souza,HBA; Figueiredo,DF; Boiago,MM; Carvalho,SR; Bordon,VF.
This study evaluated the use of probiotics and prebiotics on the histological and morphological indexes of the intestinal mucosa of broilers at 21 days of age. Thirty-six birds were randomly distributed in a 3 x 3 factorial arrangement, considering 3 probiotics and prebiotics sources in the diet. There were 9 treatments with 4 repetitions. Diet treatments were: 1 - Control (without growth promoters); 2 - Bacillus subtilis-based probiotic (Pro 1); 3 - Probiotic (Pool) based on Lactobacillus acidophilus and casei, Streptococcus lactis and faecium, Bifidobacterium bifidum and Aspergillus oryzae (Pro 2); 4 - Prebiotic based on Phosphorylated Mannanoligosaccharide (MOS) and Organic Acidifier (OA) (Pre 1); 5 - MOS-based prebiotic (Pre 2); 6 - Pro 1 + Pre 1; 7 -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Crypt depth; Growth promoters; Intestinal morphology; Villus density; Villus height.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400005

Investigation of Enteric Viruses in the Feces of Neotropical Migratory Birds Captured on the Coast of the State of Pará, Brazil
Provedor de dados: 89
Autores: Guerreiro,AN; Moraes,CCG; Marinho,ANR; Barros,BCV; Bezerra,DAM; Bandeira,RS; Silva,RR; Rocha,DCC; Meneses,AMC; Luz,MA; Paz,GS; Mascarenhas,JDP.
ABSTRACT Migratory birds can become long-distance vectors for a wide range of microorganisms and can cause human disease, being the Brazilian coast a gateway for northern migratory birds. These animals are considered natural reservoirs of different viruses that cause important diseases, being relevant research of viral pathogens in migratory birds to epidemiology surveillance. The objective of the study was to investigate the presence of avian rotavirus (AvRV), avian reovirus (ARV) and picobirnavirus (PBV) in Neotropical migratory birds captured on the coast of Brazil. A total of 23 individual fecal samples of the migratory birds species Calidris pusilla (20 birds), Numenius phaeopus (1 bird) and Charadrius semipalmatus (2 birds) were collected. Fecal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animals; Amazônia; Picobirnavirus; Reovirus; Rotavirus; RT-PCR.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100161

Investigation of Influenza A, West Nile and Newcastle Disease Viruses in Birds from the Pantanal Wetlands of Mato Grosso, Brazil
Provedor de dados: 89
Autores: Pinto,LB; Ometto,T; Araújo,J; Thomazelli,LM; Seixas,MM; Barbosa,CM; Ramos,DGS; Melo,ALT; Pinho,JB; Durigon,EL; Aguiar,DM.
ABSTRACT The Pantanal is the world's largest wetland biome with a seasonal flood pulse that attracts a great diversity of birds, many of which are migratory. Birds can be natural reservoirs Influenza A, West Nile and Newcastle Disease viruses. However, the occurrence of carriers for these viruses in the Pantanal was not verified yet. The present study evaluated the occurrence of natural infection by Influenza A, WN and ND virus of birds in the municipality of Poconé, a subregion of the Pantanal in the state of Mato Grosso, Brazil. A total of 76 birds belonging to 11 orders and 20 families were captured using mist nets. The most representative order was Passeriformes, followed by the other nine orders, which included Columbiformes, Psittaciformes,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pantanal birds; Infectious Diseases; RT-PCR; QRT-PCR; Virus.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200291

In-Vitro Adhesion and Invasion Properties of Salmonella Typhimurium Competing with Bacteriophage in Epithelial Cells and Chicken Macrophages
Provedor de dados: 89
Autores: Lee,HY; Biswas,D; Ahn,J.
ABSTRACT This study was designed to assess the role of bacteriophage P22 in the adhesion, invasion, intracellular survival of, and cellular immune response to Salmonella Typhimurium in intestinal epithelial INT-407 and chicken macrophage-like HD11 cells. The ability of S. Typhimurium to adhere, invade, and survive to INT-407 and HD11cells was evaluated under Salmonella infection alone (control), phage treatment followed by Salmonella infection (PS), Salmonella infection followed by phage treatment (SP), and a combination treatment with Salmonella and phage (S+P). The number of S. Typhimurium associated on INT-407 cells was reduced from 4.2 to 2.7 log cfu/cm2 by phage treatment (SP). The number of intracellular S. Typhimurium within INT-407 cells was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adhesion; Bacteriophage; Invasion; Salmonella; Toll-like receptor.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400427

In-Vitro Antibacterial and Antifungal Effects of High Levels of Chinese Star Anise
Provedor de dados: 89
Autores: Alhajj,MS; Qasem,MAA; Nabi,AR Jar El; Al-Mufarrej,SI.
ABSTRACT This study investigated the in-vitro antibacterial and fungicidal activities of three crude extracts of Illicium verum (absolute methanol, 50% methanol and aqueous extracts) against two Gram-positive bacteria (Staphylococcus aureus and Listeria monocytogenes), two Gram-negative bacteria (Escherichia coli and Salmonella Arizona), and two fungi (Aspergillus fumigatus and Aspergillus niger). The antibacterial action was measured using an agar disk diffusion test, and the minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) were determined. The fungicidal activity of the star anise extracts was assessed by the agar disk diffusion test, and poisoned food techniques, and the MICs and minimum fungicidal concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Illicium verum; Antibacterial; Antifungal.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100330

In-Vitro Antiviral Activities of Extracts of Plants of The Brazilian Cerrado against the Avian Metapneumovirus (aMPV)
Provedor de dados: 89
Autores: Kohn,LK; Foglio,MA; Rodrigues,RA; Sousa,IM de O; Martini,MC; Padilla,MA; Lima Neto,DF de; Arns,CW.
ABSTRACTAvian metapneumovirus (aMPV) is a negative-sense single-stranded RNA enveloped virus of the Metapneumovirus genus belonging to theParamyxoviridae family. This virus may cause significant economic losses to the poultry industry, despite vaccination, which is the main tool for controlling and preventing aMPV. The aim of this study was to evaluate the antiviral activity of extracts of four different native plants of the Brazilian Cerrado against aMPV. The antiviral activity against aMPV was determined by titration. This technique measures the ability of plant extract dilutions (25 to 2.5 µg mL-1) to inhibit the cytopathic effect (CPE) of the virus, expressed as inhibition percentage (IP). The maximum nontoxic concentration (MNTC) of the extracts used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antiviral; Avian metapneumovirus; Gaylussacia brasiliensis; Arrabidaea chica; Virola sebifera; Aspidosperma tomentosum.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300275

In-vitro cytotoxicity of aflatoxin B1 to broiler lymphocytes of broiler chickens
Provedor de dados: 89
Autores: Zimmermann,CEP; Machado,AK; Cadoná,FC; Jaques,JAS; Schlemmer,KB; Lautert,C; Cruz,IBM; Zanette,RA; Leal,DBR; Santurio,JM.
The aim of the present work was to study the in-vitro cytotoxic effects of different concentrations of aflatoxin B1 (AFB1) on broiler lymphocytes. Lymphocyte-rich mononuclear cells were separated by Ficoll-Histopaque density and cultured in 96-wellplates containing the evaluated AFB1 concentrations in 5% CO2 atmosphere at 39°C. Thereafter, MTT, PicoGreen, and reactive oxygen species assays were performed. Cell viability decreased in the presence of 10 µg/mL AFB1 at 48 h (p &lt; 0.05) and of 10 and 20 µg/mL AFB1 at 72 h (p &lt; 0.01 and p &lt; 0.001, respectively) when compared to the control (0 µg/mL). However, a dose-dependent increase in the cell-free DNA at 24 h was observed at 1, 10 and 20 µg/mL (p &lt; 0.001). ROS formation significantly increased at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aflatoxin B1; Broilers; Lymphocytes; PicoGreen; Reactive oxygen species.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300012

Involvement of Gaba and Cannabinoid Receptors in Central Food Intake Regulation in Neonatal Layer Chicks: Role of CB1 and Gabaa Receptors
Provedor de dados: 89
Autores: Zendehdel,M; Tirgari,F; Shohre,B; Deldar,H; Hassanpour,S.
ABSTRACT Feeding behavior is regulated via a complex network which interacts via diverse signals from central and peripheral tissues. Endocannabinoids modulate release of GABA in a variety of regions of the central nervous system. Endocannabinoids and GABAergic system have an important role in the central regulation of appetite. Thus, the present study examines the possible interaction of central canabinoidergic and GABAergic systems on food intake in 3-h food-deprived (FD3) neonatal layer-type chicks. The results of this study showed that intracerebroventricular (ICV) injection of 2-AG (2-Arachidonoylglycerol, selective CB1 receptors agonist, 2µg) significantly increased food intake and this effect of 2-AG was attenuated by Picrotoxin (GABAA antagonist,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cannabinoidergic; GABAergic; Food intake; Layer-type chicken.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200221

Iron Uptake by Fungi Isolated from Arcelor Mittal -Annaba- in the Northeast of Algeria
Provedor de dados: 89
Autores: Bourzama,G; Ouled-Haddar,H; Marrouche,M; Aliouat,A.
ABSTRACT The Metal pollution is one of the major risks in the world nowadays. Iron is an essential metal for growth and proliferation of a vast majority of organisms, but it can be toxic to human health and other living beings in the environment at high concentrations due to its increased industrial activity. Fungi have a remarkable capacity to uptake and detoxify iron metal using different mechanisms such as bioaccumulation. Thus, the aim of this work is to study the ability of iron uptake by the fungal strains isolated from Arcelor Mittal -Annaba- in Algeria. Three strains were screened at high concentration of iron (1 g/l) and their capacity to uptake iron has been studied on Czapek Yeast Agar medium. The amounts of uptaken iron ions were estimated in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungi; Iron; Screening; Toxic; Uptake.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100313

Is the Eggshell Quality Influenced by the Egg Weight or the Breeder Age?
Provedor de dados: 89
Autores: Crosara,FSG; Pereira,VJ; Lellis,CG; Barra,KC; Santos,SKA; Souza,LCGM; Morais,TA; Litz,FH; Limão,VA; Braga,PFS; Fernandes,EA.
ABSTRACT For a long time, it has been said that eggshell quality decreases as eggs increase in size, but this increase is seen as the breeder age advances. Therefore, the present study aimed to evaluate the age and egg weight effect on Cobb 500 broiler breeders on eggshell quality. The quality measures tested were eggshell and mineral matter percentage, eggshell surface, shape and eggshell index, eggshell and membrane thickness and specific gravity. Eggs from 27, 31, 36, 40, 46, 48, 53, 58 and 63 week-old breeders were classified as eggs with a constant weight ranging from 63.8 ± 0.2; and eggs with increasing weight, according to age, being: 55.8g; 60g; 62.2g; 64.2g; 65.2g, 66.6g, 68.1g, 69.9g and 72.5g, respectively. The eggs weight did not influence the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Eggshell thickness; Shell area; Shell index.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200314

Isolamento de enterobactérias em Alphitobius diaperinus e na cama de aviários no oeste do estado do Paraná, Brasil
Provedor de dados: 89
Autores: Chernaki-Leffer,AM; Biesdorf,SM; Almeida,LM; Leffer,EVB; Vigne,F.
O objetivo deste trabalho foi realizar o isolamento de bactérias da família Enterobacteriaceae em adultos de A. diaperinus, buscando uma correlação entre as bactérias presentes no inseto e na cama, em aviários para produção de frangos de corte no oeste do Paraná, Brasil. No primeiro experimento, insetos adultos foram coletados em 14 granjas. No segundo experimento, foram coletados insetos e material da cama de 12 diferentes aviários. Os adultos foram anestesiados com éter, macerados em solução salina e o material da cama colhido por "swab" de arrasto. O enriquecimento não seletivo foi feito com caldo BHI e o seletivo com Rappaport-Vassiliadis e Tetrationato. Os meios de cultivo para plaqueamento foram o ágar MacConkey, ágar Salmonella-Shigella e ágar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alphitobius Diaperinus; Enterobactérias; Granjas avícolas.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300009

Isolation and Antimicrobial Resistance Profiles of Enterobacteria from Nestling Grey-Breasted Parakeets (Pyrrhura Griseipectus)
Provedor de dados: 89
Autores: Machado,DN; Lopes,ES; Albuquerque,AH; Horn,RV; Bezerra,WGA; Siqueira,RAS; Lopes,IT; Nunes,FP; Teixeira,RSC; Cardoso,WM.
ABSTRACT The psittacine Pyrrhura griseipectus is a threatened species currently only found in Ceará State, Brazil. A microbiological survey was conducted to determine the composition of the enteric microbiota of this species, as well as the phenotypic profiles of antimicrobial susceptibility presented by the isolates. Cloacal swabs were collected from individual birds and submitted to microbiological processing. Antimicrobial susceptibility profiles were evaluated using the disk diffusion method. Bacteria of the genus Escherichia, Proteus, Citrobacter, Pantoea, Klebsiella, Enterobacter, Morganella, Hafnia, Enterobacter, and Serratia were isolated. The most frequently isolated species were Escherichia coli, Proteus mirabilis and Proteus vulgaris,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial resistance; E.coli; Psittacine; Wild birds.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100103

Isolation and Probiotic Potential of Lactobacillus Salivarius and Pediococcus Pentosaceus in Specific Pathogen Free Chickens
Provedor de dados: 89
Autores: Chen,F; Zhu,L; Qiu,H.
ABSTRACT This study was conducted to isolate Lactobacillus salivarius and Pediococcus pentosaceus strains from cecal content and investigate their probiotic potential in specific pathogen free (SPF) chickens. L. salivarius and P. pentosaceus strains were isolated from the cecal content of SPF chickens and identified by 16s rDNA sequence analysis by BLAST analysis at the National Center for Biotechnology Information and phylogenetic analysis using DNAStar software. In an in vivo experiment, 180 7-day-old SPF chickens were randomly assigned into three groups. Group 1 served as a control that was fed a basal diet without probiotic supplementation, and groups 2 and 3 were fed the basal diets supplemented with L. salivarius and P. pentosaceus at 2×108 CFU/g,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus salivarius; Pediococcus pentosaceus; Probiotic potential; Specific pathogen free chicken.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200325

Jejum Pré-abate em Frangos de Corte
Provedor de dados: 89
Autores: Mendes,AA.
As condições ideais dos frangos de corte no momento do abate devem ser conhecidas a fim de possibilitar a produção de carne de excelente qualidade, uma vez que diversos fatores pré e pós-abate estão envolvidos na qualidade final. Em condições normais de abate e processamento, a retirada de ração é feita de 6 a 8 horas antes da apanha das aves, resultando em um período total de jejum de 8 a 12 horas antes do abate, para esvaziar o intestino e com isso minimizar a contaminação no abatedouro. A escalda, depena e evisceração são pontos importantes de contaminação cruzada no abatedouro devido à grande quantidade de microorganismos aderidos às penas, pele e patas das aves e ao rompimento das vísceras durante a evisceração. Entretanto, a desidratação da carcaça...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contaminação; Frangos de corte; Jejum; Qualidade da carcaça.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300001

LABORATORY AND FIELD EVALUATION OF A CYPERMETHRIN-BASED INSECTICIDE FOR THE CONTROL OF ALPHITOBIUS DIAPERINUS PANZER (COLEOPTERA: TENEBRIONIDAE) AND ITS IN-VITRO EFFECTS ON BEAUVERIA BASSIANA BALS. VUILL. (HYPOCREALES: CORDYCIPITACEAE)
Provedor de dados: 89
Autores: Oliveira,DGP; Cardoso,RR; Mamprim,AP; Angeli,LF.
ABSTRACT The control of Alphitobius diaperinus is based mainly on chemical insecticides, and the indiscriminate and incorrect use of these products has led to failures in insect control. Thus, it is important to monitor the efficiency of the products available on the market and to develop alternative insect control strategies. The present study evaluated the effect of a new product (cypermethrin-6%) under laboratory and field conditions and assessed its in-vitro compatibility with the fungus Beauveria bassiana (Unioeste 4 isolate). Its efficiency in dry powder and wettable powder formulations was also assessed in the laboratory through comparison with a similar insecticide (cypermethrin-5%) at five different concentrations. The field assays were conducted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entomopathogenic Fungi; Integrated Pest Management; Broiler Chickens; Insecticide Selectivity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300371

Lactobacillus Pentosus Ita23 and L. Acidipiscis Ita44 Enhance Feed Conversion Efficiency and Beneficial Gut Microbiota in Broiler Chickens
Provedor de dados: 89
Autores: Altaher,YW; Jahromi,MF; Ebrahim,R; Zulkifli,I; Liang,JB.
Although the use of probiotics especially Lactobacillus and Bifidobacteria species on growth and feed utilization in poultry production has been extensively studied, the results were inconsistent presumably because the mode of action of probiotic is multi-factorial and each probiotic strain may affect the host in a specific manner. This study investigated the probiotic effect of two strains of Lactobacillus (Lactobacillus pentosus ITA23 and Lactobacillus acidophilus ITA44; 109 cells/kg feed) isolated from mulberry (Morus Alba) silage on the growth performance, cecal microbial population, and blood cholesterol of broiler chickens. One hundred twenty male broiler chicks (Cobb500) were randomLy allocated to two groups (control and treatment) of six replicates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Cholesterol; Lactobacillus; Low density lipoprotein; Probiotics.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200159

Lactobacillus spp. Strains Isolation, Identification, Preservation and Quantitative Determinations from Gut Content of 45-Day-Old Chickens Broilers
Provedor de dados: 89
Autores: Sorescu,I; Dumitru,M; Ciurescu,G.
ABSTRACT The objective of this study was to isolate, identify, preserve and determine the quantitative level of the Lactobacillus strains from the gut content of 45-day-old chickens broilers; to test the viability of these strains preserved at 4 ºC and room temperature (20 ± 2 ºC). Lactobacillus strains were isolated, phenotypically identified and preserved from the gut content of 17 chickens broilers. Identification was performed by morphological, cultural and biochemical characters examination, using apiwebTM and ABIS online software. The quantitative level of Lactobacillus strains in intestinal content (105 - 109 CFU/g) and the viability of strains preserved at 4 ºC and at room temperature (from 8 days to 9 months) was also determined. Twenty-three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chickens broilers; Gut; Lactobacillus spp; Phenotypic identification; Preservation.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100310

Layer Performance Recovery After Feeding Amino Acid-deficient Diets
Provedor de dados: 89
Autores: Faria,DE; Harms,RH; Russell,GB.
Three hundred and twenty Hy-Line W36&lt;FONT FACE=Symbol&gt;Ò&lt;/FONT&gt; commercial laying hens, 39 weeks of age, were used to determine the sequence and the length of time needed for hens to recover performance characteristics after an eight-week period under graded levels of threonine deficiency. Eight experimental diets with Thr levels ranging from 0.35 to 0.53% were randomly fed with eight replicates of five hens each. After the previous experiment, the hens were fed a control diet (0.53% Thr) for a four-week period. Feed consumption (FC), energy intake (EI), egg production (EP), egg weight (EW), egg mass (EM), and body weight (BW) were evaluated. All performance characteristics were impaired on Thr deficient diets. The recovery sequence order was FC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid deficiency; Egg production; Laying hens; Threonine.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200007

Laying Performance and Egg Quality of Japanese Quails Fed Diets Containing Castor Meal and Enzyme Complex
Provedor de dados: 89
Autores: Ludke,MCMM; Pimentel,ACS; Ludke,JV; Silva,JCNS; Rabello,CBV; Santos,JS.
ABSTRACT The objective of this study was to evaluate the effect of diets formulated with corn plus soybean meal (CSM) or with 21% autoclaved castor meal (ACM), with the addition of two enzyme complexes (EC1 and EC2), on the performance and egg quality of laying quail. Two hundred and sixteen quails were selected by egg production and weight uniformity and distributed in a completely randomized design with six treatments (in a 2 × 3 cross-factorial arrangement) and six replicates with six birds each. Three CSM and three ACM diets supplemented withEC1, EC2, or unsupplemented were established. The trial lasted three cycles of 21 days. Feed intake, laying rate, egg mass, feed conversion per egg mass, and feed conversion per dozen eggs did not differ. The use...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Autoclaved castor meal; Enzymes; Laying quails; Protein source.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400781

Lead poisoning mortality in wild passeriformes and its detection in free-range chicken eggs in Southern Minas Gerais, Brazil
Provedor de dados: 89
Autores: Martins,NRS; Marques,MVR; DAR,Vilela; Resende,JS; Carvalhaes,AG; Andrade,EAG; Barrios,PR.
The mortality of passerines native of Southern Minas Gerais, Brazil, in August 2006 and the examination of sentinel free-range chicken eggs in August 2007 in an area surrounding a car battery lead smelter plant is described. The high levels of lead, as detected in the passerines (4.80-12.74 mg/kg) at the onset of mortality and at the follow-up sampling of the free-range chicken eggs (25.02-35.21 mg/kg in shells, 0.41-1.36 mg/kg in yolks and 0.40-0.75 mg/kg in the albumins), used as environmental sentinels, indicated the continuing lead pollution.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Battery recycling; Car; Free-range chicken; Lead; Passerine.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300002

Lighting in the shackling area: conciliating broiler welfare with labor comfort
Provedor de dados: 89
Autores: Adamczuk,GO; Trentin,MG; Lima,JD de; Motta,J; Cantelli,RP.
The objective of this study was to investigate if blue lighting could reduce broiler stress and comply with legal labor comfort requirements in a new shackling area of a middle-size processing plant. In this study, the old shackling area was compared with the new area, where a blue lighting system was designed and implemented according to the regulations. The old and new areas were video- and audio-recorded during the shackling of 33,850 broilers in each area. Data were statistically analyzed using the non-parametric test of Wilcoxon-Mann-Whitney (w test).The results indicated 56% reduction in wing-flapping and 3.2% noise reduction in the new area. These results were obtained by increasing 119% lighting at the work stations in the shackling area, allowing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Pre-slaughter operations; Lighting; Animal welfare; Lighting comfort.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200012

Limestone and oyster shell for brown layers in their second egg production cycle
Provedor de dados: 89
Autores: Pizzolante,CC; Kakimoto,SK; Saldanha,ESPB; Laganá,C; Souza,HBA; Moraes,JE.
This study aimed at evaluating the effect of dietary calcium levels and the replacement of calcium sources with different particle size compositions on the performance and egg quality of brown layers in their second egg production cycle. A randomized block experimental design was applied with 12 treatments in a 3x4 factorial arrangement: three calcium levels (2.6, 3.2, 3.8 %) and four combinations of calcium sources (1- 100% fine limestone (FL), 2- 50% FL + 50% coarse limestone (CL), 3- 50% FL and 50% oyster shell (OS), 4- 50% FL and 25% CL+ 25 %OS), with six replicates of eight birds each. Calcium sources were analyzed for geometric mean diameter (GMD) and in-vitro solubility. The following performance and egg quality parameters were evaluated: egg weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Levels; Minerals; Particle size; Performance; Sources.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200004

Lipid and glucose metabolism of broilers (Gallus gallus domesticus) experimentally infected with Eimeria acervulina Tyzzer, 1929 oocysts
Provedor de dados: 89
Autores: Freitas,FLC; Almeida,KS; Machado,RZ; Machado,CR.
Lipid and glucose metabolism of 76 ten-day-old Cobb male broilers, experimentally infected with Eimeria acervulina, was studied for 30 days. Birds were distributed in 2 groups: one infected with 1x10(6) E. acervulina sporulated oocysts, and the other inoculated with distilled water. Pathological e biochemical liver changes were assessed, as well as plasma glucose concentrations and total cholesterol, HDL, LDL, VLDL, fatty-acid, and triglyceride levels in the serum. The infected broilers presented hypoglycemia associated with a reduction in liver glycogen. In addition, these birds developed fatty liver, and there were changes in all lipid classes in the serum. Lipid and glucose metabolism was dramatically changed in broilers experimentally infected with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Eimeria acervulina; Fatty acids; Glucose; Total cholesterol; Triglycerides.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300004

LIPID METABOLISM INDICES AND FATTY ACIDS PROFILE IN THE BLOOD SERUM OF BROILER CHICKENS FED A DIET WITH LIGNOCELLULOSE
Provedor de dados: 89
Autores: Bogusławska-Tryk,M; Piotrowska,A; Szymeczko,R; Burlikowska,K; Głowińska,B.
ABSTRACT The aim of the research was to determine lipid metabolism indices and fatty acid profile in the blood serum of Ross 308 chickens (n = 48), fed a finisher mixture supplemented with 0, 0.25, 0.5 and 1.0% of lignocellulose. The feeding trial lasted from 21 to 42 d of the birds' age. Blood samples were collected from each chicken at 42d of age from the pterygoid canal vein. In the blood serum the content of triglycerides (TG), total cholesterol (TCHOL) and high density lipoprotein (HDL) fraction was determined by the spectrophotometric method. The fatty acids concentration was estimated with the use of the gas chromatography method. Lignocellulose in doses of 0.5 and 1.0% significantly reduced the concentration of triglycerides and low density...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood parameters; Broiler; Fatty acids; Fiber.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300451

Lipid Peroxidation in the Plasma, Lungs, Heart and Liver of Broilers Fed a Grape Seed Extract and Raised at 2278 m of Altitude
Provedor de dados: 89
Autores: Rodríguez-Ortega,LT; Juárez-Juárez,G; Pro-Martínez,A; Sosa-Montes,E; Bautista-Ortega,J; González-Cerón,F; Vargas-Galicia,AJ; Chan-Díaz,D; Moreno-Medina,D; Gallegos-Sánchez,J; Rodríguez-Ortega,A.
ABSTRACT The aim of this research was to evaluate the effect of partial substitution of vitamin E (VE) by grape seed extract (GSE) on glutathione peroxidase activity (GPxA), nitric oxide (NO) concentration and lipid peroxidation [malondialdehyde (MDA) concentration] in the plasma, lungs, heart and liver, and live performance of broilers raised at 2278 m of altitude. One-d-old Ross 308 male chickens (n = 420) were randomly distributed into three treatments: Control-AL (basal diet containing 40 IU of VE and fed ad libitum; AL), Control-FR (basal diet and feed restriction; FR) and GSE-AL [basal diet containing 10 mg of GSE (equivalent to 30 IU VE) plus 10 IU of VE and fed AL]. The data were analyzed using one-way analysis of variance. Glutathione peroxidase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grape seed extract; High altitude; Lipid peroxidation; Vitamin E.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300465

Lipid Sources in Diets for Hy-Line White Laying: Performance, Biometrics of Digestive Organs, and Bone Characteristics
Provedor de dados: 89
Autores: Moura,CP; Leite,SCB; Nogueira,APA; Farias,MRS; Abreu,CG; Sena,TL; Freitas,ER.
ABSTRACT Dietary inclusion of lipid sources has been one of the methods adopted by nutritionists aiming at better energy balancing. However, alternative energy feedstuffs have been sought in an attempt to reduce production costs. In this regard, lipid sources that can replace conventional ones, such as beef tallow, cottonseed oil, and sunflower oil have been investigated. The objective of this study was to examine the effects of different lipid sources on the performance, egg quality, biometrics of digestive organs, and bone quality of white-egg commercial layers in the first production cycle. A total of 216 Hy-Line White layers at 70 weeks of age, weighing 1.701 ± 0.103 kg, were used in a completely randomized design with four treatments and six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy feedstuff; Cottonseed oil; Laying; Chicken fat.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300309

Lipids Oxidative Stability and Microbial Shelf Life Quality of Licorice (Glycyrrhiza glabra L.) Extract Supplemented Chicken Patties
Provedor de dados: 89
Autores: Aslam,MN; Sohaib,M; Khan,AU; Ali,S; Amjad,A; Ahmed,S.
ABSTRACT The current study envisaged to evaluate the role of licorice (Glycyrrhiza glabra L.) extract on lipid oxidation, quality attributes, sensorial as well as microbial stability of chicken meat patties at refrigerated (4 ­˚C) storage. Accordingly, 4 levels of licorice extract were added @0.25, 0.5, 1.0 and 1.25% in chicken patties development process along with positive (0.25% butylatedhydroxyanisole) and negative control (without antioxidant). The developed patties were cooked and subjected to thiobarbituric acid reactive substances (TBARS), total phenolics (TPC), ferric reducing antioxidant power (FRAP), color, pH, sensory evaluation, total plate count (TPC) and Escherichia coli analysis at 0, 3rd and 7th day of storage. The findings indicated that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycyrrhiza glabra; Chicken processing; Natural antioxidants; Quality attributes; Microbial safety.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300312

Litter characteristics and pododermatitis incidence in broilers fed a sorghum-based diet
Provedor de dados: 89
Autores: Carvalho,CMC; Litz,FH; Fernandes,EA; Silveira,MM; Martins,JM da S; Fonseca,LA; Zanardo,JA.
The aim of this study was to evaluate the incidence of footpad dermatitis and quality of broilers litter fed with sorghum grain and diets based in corn. It was used 544 male and female chicks, distributed in a completely randomized design with two treatments and eight replications. The chicken feed was formulated and produced from corn, soybean meal and sorghum grain. In the formulation were kept constant levels of energy and protein in accordance with the following treatments: A. Control (diet based on corn and soybean meal); B. Grain sorghum (Whole Sorghum + soybean meal). At 35 and 42 days were evaluated mineral matter (A %), calcium (Ca%), phosphorus (P%), pH and dry matter (DM %) of the poultry litter. To evaluate the footpad dermatitis were evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Turkey; Enteritis; Viruses; Poults; Diagnosis; Calcium; Environmental impact; Phosphorus.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300010

Litter materials and the incidence of carcass lesions in broilers chickens
Provedor de dados: 89
Autores: Garcia,RG; Almeida Paz,ICL; Caldara,FR; Nääs,IA; Bueno,LGF; Freitas,LW; Graciano,JD; Sim,S.
The aim of this study was to evaluate the effects of different litter materials on litter compaction, broiler feathering and the incidence of carcass lesions. In the experiment, 3240 one-day-old Ross® chicks were selected by sex and distributed according to a completely randomized experimental design in a 2 x 6 factorial arrangement (two sex and six litter materials). The following litter materials were used: wood shavings, rice husks, chopped Napier grass, 50% sugar cane bagasse plus 50% wood shavings, 50% sugar cane bagasse plus 50% rice husks, and pure sugar cane bagasse. Litter compaction was weekly assessed using a penetrometer. On days 21, 35 and 42 of the experimental period, feathering on the back and legs was scored according to a 0 - 10 scale. On...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compaction; Fathering; Quality; Substrate.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100005

Live performance and processing yields of broilers fed diets with tiamulin and salinomycin combinations
Provedor de dados: 89
Autores: Vieira,SL; Favero,A; Berres,J; Freitas,DM; Martinez,JEP; Mayorga,ME; Coneglian,JLB.
A study was conducted with the objective of evaluating the combined application of tiamulin (TIA) and salinomycin (SAL) in broiler diets fed from 1 to 42 d of age. One thousand and two hundred Cobb x Cobb 500 male broilers were housed in 48 floor pens and fed corn-soybean meal diets containing 66 ppm of SAL combined or not with TIA at 30 or 20 and 20 or 15 ppm, respectively, in the starter (1-21 d) and grower feeds (22-42 d); however, TIA was withdrawn from the feeds 7 days before slaughter. The experimental design was completely randomized with 3 treatments and 16 replicates of 25 birds each. Broilers were weekly evaluated for live performance whereas carcass yield, abdominal fat and commercial cuts were assessed at 42 d using 6 birds randomly taken from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotic; Broiler; Ionophores; Salinomycin; Tiamulin.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100005

Live Performance, Carcass, and Bone Quality Responses of Grower and Finisher Broilers to Dietary Metabolizable Energy Levels
Provedor de dados: 89
Autores: Gopinger,E; Krabbe,EL; Surek,D; Lopes,LS; Avila,VS.
ABSTRACT Broiler energy nutrition has attracted attention due to its economic importance, particularly during the rearing period of 22-42 days of age. There are many evidences that broilers changed their feed intake capacity due to genetic selection, especially when good quality pellets are fed, which suggests that modern broiler strains may achieve good performance when fed low metabolizable energy levels. The objective was to evaluate the energy efficiency, performance parameters, bone parameters, and carcass yield of 22- to 42-d-old broilers fed diets with energy levels below or above their requirements, while maintaining the density of all other nutrients. In total, 900 male broilers were distributed in a randomized block design, with five treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Carcass; Energy efficiency; Feed conversion ratio; Feed intake.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400559

Live Performance, Carcass Yield, and Welfare of Broilers of Different Genetic Strains Reared at Different Housing Densities
Provedor de dados: 89
Autores: Arruda,JNT; Mendes,AS; Guirro,ECBP; Schneider,M; Sikorski,RR; Sausen,L; Dias,ER; Bonamigo,DV.
Abstract This study evaluated the performance, carcass yield and quality, and physiological stress indicators of broilers of three genetic strains reared at three housing densities for 29 days. A total of 828 day-old male chicks, with average initial weight of 40.0± 2.0g were used. Three genetic strains (Cobb 500, Ross 808, and Ross 508, with 276 birds each) and three housing densities (17, 19, and 21 broilers/m²) were tested. A completely randomized experimental design in a 3 x 3 factorial arrangement, with four replicates of 23 birds each, was applied. The following responses were evaluated: performance parameters (average weekly body weight, average daily gain, feed intake, feed conversion ratio), physiological stress indicators (blood glucose levels,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood count; Poultry industry; Live performance; Stress.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100141

Lysine and methionine + cystine for laying hens during the post-molting phase
Provedor de dados: 89
Autores: Domingues,C H de F; Sgavioli,S; Praes,M F F M; Duarte,K F; Castiblanco,D M C; Santos,E T; Alva,J C R; Junqueira,O M.
One experiment was conducted to evaluate the effect of using different lysine and methionine + cystine levels on body weight recovery, performance, and egg quality of laying hens during the post-molting period. In this trial, 432 Isa Brown layers, with 72 weeks of age, were distributed in 54 cages according to a completely randomized design with six treatments and nine replicates of eight birds each. During the resting period, six diets with different digestible lysine and methionine + cystine levels were used, as follows: 0.48% digestible lysine and 0.43% methionine + cystine; 0.48% digestible lysine and 0.47% methionine + cystine; 0.48% digestible lysine and 0.52% methionine + cystine; 0.56% digestible lysine and 0.50% methionine + cystine; 0.56%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sulfur amino acids; Amino acid ratios; Forced molting; Morphometrics.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300005

Macro-anatomy of the Bones of Thoracic Limb in Dalmatian Pelican (Pelecanus crispus)
Provedor de dados: 89
Autores: Ilgün,R.
ABSTRACT In this study, the bones forming the poultry skeleton of the Dalmatian pelican were macroscopically examined. For this purpose, three Dalmatian pelicans were used. In the Dalmatian pelicans, the shoulder girdle (Ossa cinguli membri thoracici) is formed by the scapula, os coracoideum and clavicula bones. The scapula bone was short and flat. The humerus was a long bone with a cylindrical, pneumatic structure. Os corocoideum was also in the processus coracoideus tuber. Radius formed a joint with the ulna, and presented a slight slope from proximal to distal direction. Ossa carpi bones (skeleton manus) were composed of os carpi ulnare and os carpi radiale. The phalanx proximalis digiti majoris had a triangular shape on the dorsal side and two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pelecanus crispus scapula; Os coracoideum clavicular humerus.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100308

Main factors that affect the economic efficiency of broiler breeder production
Provedor de dados: 89
Autores: Carvalho,EH; Zilli,JB; Mendes,AS; Morello,GM; Bonamigo,DV.
This study aimed at identifying the factors that affect the economic efficiency of broiler breeder production using the analysis of stochastic profit frontier function. Data were collected in 48 broiler breeder farms contracted by a commercial company located in southwestern Paraná, Brazil. The collected data refer to the last batch of fertile eggs that was delivered to the company, between January, 2008, and July, 2009. The following parameters were evaluated: production of hatching eggs per hen (number of eggs/hen), hatchability (hatch %), feed intake per hatching egg (g feed/ egg), production scale (number of birds/batch), farmer's experience in production activities, and labor type. Factors, such as area of occupied land, electricity costs, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Economic efficiency; Poultry production; Profitability.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100011

Managing Colllinearity in Modeling the Effect of Age in the Prediction of Egg Components of Laying Hens Using Stepwise and Ridge Regression Analysis
Provedor de dados: 89
Autores: Shafey,TM; Hussein,ES; Mahmoud,AH; Abouheif,MA; Al-Batshan,HA.
ABSTRACT The relationships between egg measurements [egg weight (EGWT), egg width (EGWD), egg shape index (EGSI), egg volume (EGV) and egg density (EGD)], and egg components [eggshell (SWT), yolk (YWT) and albumen (AWT)] were investigated in laying hens with 32, 45, and 59 weeks of age with an objective of managing multicollinearity (MC), using stepwise regression (SR) and ridge regression (RR) analyses. There were significant correlations among egg traits that led to MC problems in all eggs. Hen age influenced egg characteristics and the magnitude of the correlations among egg characteristics. Eggs produced at older age had significantly (p&lt;0.01) higher EGWT, EGWD, EGV, YWT and AWT than those produced at younger age. The SR model alleviated MC problem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age of laying hens; Morphological characters of eggs; Predicting egg components; Regression analysis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400473

Mass Balance Applied to Brazilian Conventional Broiler Houses during One Production Cycle
Provedor de dados: 89
Autores: Migliavacca,A; Yanagihara,JI.
ABSTRACT Brazil plays an important role in global poultry production as it is the world's largest chicken exporter and the third largest broiler producer. Despite the development achieved by the Brazilian broiler industry as a result of the integrated production system, many obstacles still need to be overcome, in particular, housing environment. In this regard, detailed knowledge of the inputs, outputs, and primary waste generated by broiler production cycles is essential to establish a baseline for energy balance research studies and to develop environmental solutions. This article proposes a mass balance of conventional broiler houses of southern Brazil sheds in order to predict their outputs, but that may also be applicable to other regions with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Cycle production; Mass balance; Poultry production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100075

Mathematical Model to Compare Egg Production C
Provedor de dados: 89
Autores: Fialho,FB; Ledur,MC; Avila,VS.
A segmented polynomial model was used on several egg production curves in an attempt to analyze the differences between the curves in a more descriptive manner. Production curves from different commercial and experimental genetic lines of layers were used. The parameters of the model include the age and level of peak production, rate of decrease in production after the peak and time between start and peak of production. These and other derived variables were compared between the curves using contrasts. The methodology used allowed an easier interpretation of the curves, and the detection of differences in sexual maturity, uniformity and peak of production. This work validates the segmented polynomial model for use in future research dealing with analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Layers; Laying hens; Model.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300002

Meat and carcass traits of the red-winged tinamou (Rhynchotus rufescens)
Provedor de dados: 89
Autores: Queiroz,FA de; Carvalho,MM de; Sugui,JK; Nunes,J; Felipe,L; Santos,EC dos; Tonhati,H; Boiago,MM; Hata,ME; Tholon,P; Queiroz,SA de.
Tinamou (Rhynchotus rufescens) is a native bird of the Brazilian fauna and has great potential to become a domesticated species. From this perspective, the objective of this study was to evaluate the carcass and main parts yield and to assess meat quality of that bird. Two trials, one studying stocking density and the other litter materials, lasting 60 days each, were conducted. The studied traits were evaluated in two birds/replicate/treatment. Performance was evaluated by the least square method. The results showed that bird age at slaughter significantly influenced carcass and breast yields (p&lt;0.05). Mean carcass, breast, thighs+drumstick and wing yields were 86.50±2.78%, 32.84±1.50%, 27.71±1.44%, and 13.21±0.94%, respectively. Shear force, pH, water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yield; Lightness; PH; Shear force; Water holding capacity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200006

Meat Quality of Chicken Breast Subjected to Different Thawing Methods
Provedor de dados: 89
Autores: Oliveira,MR; Gubert,G; Roman,SS; Kempka,AP; Prestes,RC.
Freezing is one of the methods to preserve and guarantee the quality of meat until it reaches the consumer. Even though freezing is classified as a mild form of preservation, it causes meat changes resulting from the formation of ice crystals that subsequently affect the tenderness and functionality of meat. The aim of this study was to evaluate the physicochemical and structural characteristics of chicken half breast submitted to fast freezing (-36 °C for 2 hours) and thawed by five different methods (under refrigeration, in a microwave, in a oven with air circulation, placed in cold water, or at room temperature). After thawing, the following parameters were evaluated: moisture content, drip loss (syneresis), water activity (aw), and shear force. Samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Texture; Hematoxylin-eosin; Fluid loss; Microwave.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200165

Meeting embryonic requirements of broilers throughout incubation: a review
Provedor de dados: 89
Autores: Molenaar,R; Reijrink,IAM; Meijerhof,R; Van den Brand,H.
During incubation of chicken embryos, environmental conditions, such as temperature, relative humidity, and CO2 concentration, must be controlled to meet embryonic requirements that change during the different phases of embryonic development. In the current review, the effects of embryo temperature, egg weight loss, and CO2 concentration on hatchability, hatchling quality, and subsequent performance are discussed from an embryonic point of view. In addition, new insights related to the incubation process are described. Several studies have shown that a constant eggshell temperature (EST) of 37.5 to 38.0°C throughout incubation results in the highest hatchability, hatchling quality, and subsequent performance. Egg weight loss must be between 6.5 and 14.0%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler embryos; CO2 concentration; Incubation; Relative humidity; Temperature.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300001

Megabacteriosis Occurrence in Budgerigars, Canaries and Lovebirds in Ribeirao Preto region - Sao Paulo State - Brazil
Provedor de dados: 89
Autores: Werther,K; Schocken-Iturrino,R P; Verona,CES; Barros,LSS.
This paper reports the occurrence of an megabacterium-like organism at small birds from the Northeast area of São Paulo State - Brazil. The results presented herein were obtained from 64 necropsy along four years (1994-1997). Sixty four birds (4 budgerigars Melopsittacus undulatus, 12 lovebirds Agapornis spp and 48 canaries Serinus canaria) were studied. At 56% of the examined birds showed at the proventricular mucus smear a presence of rod-shaped (similar to a toothpick) organisms, Gram positive and acidophilic in Giemsa staining, called megabacteria. Different kind of culture media was testes to replicated these organism in vitro. Also the dimension (large and width) of the fresh microorganism from the proventricular mucus and from the first culture was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Megabacterium; Proventriculitis; Going Light Syndrom.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200008

Melaleuca alternifolia Essential Oil against the Lesser Mealworm (Alphitobius diaperinus) and Its Possible Effect on the Soil Fauna
Provedor de dados: 89
Autores: Volpato,A; Lorenzetti,WR; Zortea,T; Giombelli,LCDD; Baretta,D; Santos,RCV; Vaucher,RA; Raffin,RP; Souza,ME; Stefani,LM; Boligon,AA; Athayde,ML; Silva,AS da.
ABSTRACT The aim of this study was to evaluate the in vitro bioactivity of tea tree (Melaleuca alternifolia) essential oil against larvae and adult forms of lesser mealworms (Alphitobius diaperinus) and its influence on the soil fauna. Tests were performed in triplicate using pure tea tree oil (TTO; 1, 5, 10, 25, 50, and 100%), TTO nanoparticles (1, 3, and 7.5%), or terpinen-4-ol, the main compound of the tea tree oil, at the same concentrations of TTO. Larvae and adult mortality occurred at concentrations up to 10 and 50% of TTO, respectively. No larvicidal or insecticidal effect of TTO nanoparticles was observed. Terpinen-4-ol showed insecticidal and larvicidal effect at concentrations higher than 25%. The evaluation of TTO effect on soil organisms was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alphitobius diaperinus; Essential oil; Natural products; Nanotechnology; Pest management.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100041

Mercury Bioaccumulation in Eggs of Hens Experimentally Intoxicated with Methylmercury Chloride and Detoxified with a Humic-Aluminosilicate Preparation
Provedor de dados: 89
Autores: Barej,R; Dobrzański,Z; Popiela-Pleban,E; Bubel,F; Polak-Juszczak,L.
ABSTRACT The aim of the study was to evaluate the effectiveness of preventive-detox preparation (P-dP) based on humic and aluminosilicate substances in the diet of laying hens (3% daily dose) previously intoxicated with methylmercury chloride (CH3ClHg, 5 mg Hg/kg feed mixture) for six weeks. Mercury content in the whole eggs of the group intoxicated with CH3ClHg increased compared to the control group: 488-fold after 1 wk, 622-fold after 2 wks, and 853-fold after 6 wks of intoxication. The use of P-dP in the group previously intoxicated with CH3ClHg reduced he mercury content of whole eggs by 18.4%, on average, whereas the average was 29.9% two weeks after the discontinuation of CH3ClHg and P-dP supply. Maximum Hg content in the whole egg was observed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Humic-aluminosilicate preparation; Mercury.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400531

Metabolizable Energy For Chickens Of High And Low Density Corn Fractions Segregated In Densimetric Table
Provedor de dados: 89
Autores: Komatsu,GSN; Dias,CTS; Suckeveris,D; Pereira,R; Fujikura,VK; Burin Jr,AM; Menten,JFM.
ABSTRACT Corn is the main energy feed used in broiler chickens rations in most countries. In the literature, there are indications that high density corn segregated in densimetric table contains higher value of metabolizable energy than the corresponding fraction of low density, but the reasons are not clear. This study was conducted to determine the metabolizable energy of different types of corn, segregated in densimetric table, for poultry. The corn types were selected by the texture of grain (flint, semi-dent and dent) and were planted in the same area. Semi-dent grain corn was used as standard, and the flint and dent grains were segregated in a densimetric table to separate 25% of the total as high density and 25% as low density. The flint, semi-dent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corn; Densimetric table; Hectoliter weight; Metabolizable energy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200303

Metabolizable Energy Levels for Meat-Type Quails at Starter Phase
Provedor de dados: 89
Autores: Muniz,JCL; Barreto,SLT; Viana,GS; Mencalha,R; Reis,RS; Hannas,MI; Barbosa,LMR; Maia,RC.
ABSTRACT This experiment was conducted to evaluate the effects of dietary nitrogen-corrected apparent metabolizable energy (AMEn) levels on meat-type quail performance and carcass traits from 1 to 14d of age. A total of 1120 not sexed meat-type quails were randomly distributed to seven treatments, with eight replicates with 20 quails each. A basal corn and soybean meal-based diet was formulated to meet or exceed quail nutritional requirements, except for ME. Graded levels of soybean oil were added to the basal diet in replacement, to sand, to obtain dietary treatments (2,600; 2,700; 2,800; 2,900; 3,000; 3,100 and 3,200 KcalAMEn/kg diet). Data were analyzed as one-way ANOVA and optimum AMEn levels were estimated using polynomial regression model. Increasing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass traits; Coturnix coturnix coturnix; Performance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200197

Metabolizable energy of different glycerine sources derived from national biodiesel production for broilers
Provedor de dados: 89
Autores: Zavarize,KC; Menten,JFM; Pereira,R; Freitas,LW; Romano,GG; Bernardino,M; Rosa,AS.
The objective of the present study was to evaluate the quality of different glycerine sources produced in Brazil and to analyze their metabolizable energy levels and digestibility for broilers. Firstly, the composition of 10 samples of glycerine from different sources was analyzed. Secondly, glycerine from four different sources presenting contrasting compositions were selected to determine their metabolizable energy levels and digestibility in metabolism assays using 200 broilers between 21 and 29 days of age, applying the method of total excreta collection. The values of apparent metabolizable energy corrected for nitrogen balance of the four glycerine sources were 3145, 5026, 2828, and 2892 kcal/kg.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Broilers; Metabolizable energy; Glycerol.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400011

Methionine sources do not affect performance and carcass yield of broilers fed vegetable diets and aubmitted to cyclic heat stress
Provedor de dados: 89
Autores: Ribeiro,AML; Dahlke,F; Kessler,AM.
The supplementation of vegetal diets with L-methionine (100% molar), methionine hydroxyl analogue (HMB) (88% molar) or DL-methionine (99% molar) was compared as to the performance of broilers allocated in cages and submitted to cyclic heat stress (CHS). The trial was carried out from 21 to 42 days of age. Two levels of synthetic methionine were supplemented for each methionine source (0.1 or 0.3 %), and the control treatment was not supplemented with synthetic methionine (negative control). Statistical analyses included the negative control treatment or were performed in a 3 x 2 factorial design (sources x levels). Addition of synthetic methionine to the basal level containing 0.63 % of total sulphur amino acids significantly improved feed conversion (FC)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methionine source; Poultry; Sulphur amino acids; Temperature.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300004

METHODS TO EVALUATE THE EGGSHELL QUALITY OF TABLE EGGS
Provedor de dados: 89
Autores: Montenegro,AT; Garcia,EA; Molino,AB; Cruvinel,JM; Ouros,CC; Alves,KS.
ABSTRACT The objectives of this study were to determine the most suitable probe diameter and egg position to perform the eggshell breaking strength test using a texturometer, as well as the most reliable parameter to estimate eggshell quality when no electronic devices are available. Eggshell quality (eggshell breaking strength, eggshell weight, eggshell percentage, eggshell thickness, shell weight per unit surface area) was evaluated as a function of texturometer probe diameter (2, 10, and 75mm), egg type (white and brown) and egg position (horizontal and vertical). In the experiment, 2520 eggs from 60-week-old commercial layers were separated by specific gravity measured by flotation method in saline solution (1.070 to 1.100 g/cm3 with intervals of 0.005...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brown eggs; Egg position; Eggshell breaking strength; White eggs.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300327

Metodologia de Dimensionamento de Sistemas de Aquecimento em Piso, em Função da Temperatura e Espessura de Cama, para Criação de Frangos de Corte
Provedor de dados: 89
Autores: Abreu,PG; Abreu,VMN; Baêta,FC.
Avaliou-se a temperatura e a espessura de cama ideal para os sistemas de aquecimento elétrico (fibra de vidro e argamassa armada), em relação a temperatura ambiental, a partir de testes realizados em galpão para aves, na EMBRAPA-CNPSA. Os valores de temperatura em cada ponto determinado foram coletados de 5 em 5 minutos. O sistema permaneceu em funcionamento até a superfície superior de cama sobre a placa atingir o valor de 35ºC. O sistema mais adequado foi aquele em que a espessura da argamassa e a espessura da fibra de vidro foram 0,06m e 0,08m, respectivamente, com uma espessura de cama total, fora do círculo, de 0,11m.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sistema de aquecimento; Aves; Piso; Argamassa armada; Fibra de vidro.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100003

Micotoxinas e Micotoxicoses na Avicultura
Provedor de dados: 89
Autores: Santurio,JM.
Esta revisão tem como objetivo principal mostrar, baseado em dezenas de pesquisas realizadas, os efeitos tóxicos das micotoxinas aflatoxinas, tricotecenos, zealenona e fumonisinas sobre o desempenho das aves. O descobrimento das propriedades hepatotóxicas e hepatocarcinogênicas de algumas linhagens de Aspergillus flavus e A. parasiticus em perus, na Inglaterra, no início da década de 1960, seguida pela elucidação da estrutura de seus metabólitos tóxicos, as aflatoxinas, deu novo enfoque e prioridade para a pesquisa sobre micotoxinas. Análises de aflatoxinas realizadas no Laboratório de Análises Micotoxicológicas (LAMIC) da Universidade Fedaral de Santa Maria, entre os anos de 1986 e janeiro de 2000, em 15.600 amostras de alimentos destinados principalmente...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micotoxinas; Aves; Efeitos tóxicos; Aflatoxinas; Tricotecenos; Zearalenona; Fumonisinas; Controle.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100001

Microbiological, Physicochemical, and Histological Analyses of Broiler Carcasses with Cachexia
Provedor de dados: 89
Autores: Nery,LC; Santos,LR; Daroit,L; Marcolin,JEE; Dickel,EL.
ABSTRACT Broiler carcasses presenting cachexia, as determined by the federal inspection agency, were submitted to microbiological, physicochemical, and histological analyses. Over a 2-month period, 278 carcasses from straight-run flocks of 43- to 48-d-old Cobb broilers from two different farms were condemned due to cachexia and subjected to gross examination in the final inspection sector. Out of the 278 carcasses, 131 did not present any gross signs of infection, and were submitted to microbiological analyses (n=83), physicochemical analyses (n=28), and viscera and muscle samples of 20 carcasses were evaluated by histology. The microbiological results of cachectic carcasses complied with the current legislation on the consumption of fresh poultry meat....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cachexia; Broiler; Condemnation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400595

Microbiological quality of poultry meat: a review
Provedor de dados: 89
Autores: Mead,GC.
Poultry meat can be contaminated with a variety of microorganisms, including those capable of spoiling the product during chill storage, and certain foodborne pathogens. Human illness may follow from handling of raw meat, undercooking or mishandling of the cooked product. While Salmonella and Campylobacter spp. remain the organisms of greatest global concern in this respect, others present include the more recently reported Arcobacter and Helicobacter spp. and, occasionally, verotoxigenic Escherichia coli. Also considered here is the growing problem of antimicrobial resistance among poultry-associated pathogens. Because of the need for a systematic and universally applicable approach to food safety control, the Hazard Analysis Critical Control Point...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry meat; Processing; Microbial contamination.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300001

Microsatellite Analysis of Genetic Diversity in Quail Populations from China
Provedor de dados: 89
Autores: Bai,JY; Pang,YZ; Zhang,XH; Yun,YX; Qi,YX.
ABSTRACT Polymorphism of three quail communities was analyzed by using 12 microsatellite markers in this paper, aiming to provide scientific references for the evaluation, protection and utilization of quail genetic resources in China. Results demonstrated that the number of observed alleles by 12 microsatellite markers ranges between 4~7. The average polymorphism information contents (PIC) of the Chinese yellow quail, the Chinese black quail and the Korean quail, as detected by 12 microsatellite markers, are 0.6853, 0.6401 and 0.6565,respectively, and average heterozygosity values are 0.7333, 0.6957 and 0.7111, respectively. This indicates that the Chinese yellow quail has the richest genetic polymorphism. According to cluster analysis, the Chinese black...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chinese black quail; Microsatellite marker; Polymorphism; Genetic diversity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300519

Mineral Source and Vitamin Level in Broiler Diets: Effects on Performance, Yield, and Meat Quality
Provedor de dados: 89
Autores: Ribeiro,MV; Bittencourt,LC; Hermes,RG; Rönnau,M; Rorig,A; Lima,FK; Fernandes,JIM.
ABSTRACT The purpose of this trial was to supplement commercial broiler diets with optimum vitamin programs and higher availability of mineral sources, and to evaluate the effect on performance, yield and meat quality of broilers. The study used 1800 male broiler chicks randomly distributed in a 2 x 2 factorial design (vitamin programs - optimum and commercial vs. mineral sources - inorganic (sulfates) and carbo-amino-phospho-chelate (CAPC)). Supplementation associating optimum vitamin levels and mineral source CAPC resulted in better feed conversion and higher carcass weight at 42 days of age (p&lt;0.05). Supplementation of diets with optimum vitamin levels resulted in higher absolute and relative breast weight, lower abdominal fat deposition, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dripping; Shear force; TBARS; White striping.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200321

Miniaturized most probable number for the enumeration of Salmonella sp in artificially contaminated chicken meat
Provedor de dados: 89
Autores: Colla,FL; Mion,L; Parizotto,L; Rodrigues,LB; Pilotto,F; Dickel,EL; Nascimento,VP do; Santos,LR dos.
Salmonella is traditionally identified by conventional microbiological tests, but the enumeration of this bacterium is not used on a routine basis. Methods such as the most probable number (MPN), which utilize an array of multiple tubes, are time-consuming and expensive, whereas miniaturized most probable number (mMPN) methods, which use microplates, can be adapted for the enumeration of bacteria, saving up time and materials. The aim of the present paper is to assess two mMPN methods for the enumeration of Salmonella sp in artificially-contaminated chicken meat samples. Microplates containing 24 wells (method A) and 96 wells (method B), both with peptone water as pre-enrichment medium and modified semi-solid Rappaport-Vassiliadis (MSRV) as selective...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken meat; Most probable number; Salmonella.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100006

Minimum ventilation systems and their effects on the initial stage of turkey production
Provedor de dados: 89
Autores: Mendes,AS; Moura,DJ; Nääs,IA; Morello,GM; Carvalho,TMR; Refatti,R; Paixão,SJ.
This study aimed at evaluating the live performance of turkeys during the initial stage of production (1-26 days of age) and to map the environmental variables inside turkey houses, such as temperature, relative humidity, CO2 concentration, at two distinct minimum ventilation systems. House 1 (H1) was equipped with a negative-pressure ventilation system and House 2 (H2) was equipped with a positive-pressure ventilation system. This study was performed in commercial poultry houses, located in Francisco Beltrão, Paraná, Brazil, in June, 2008. A number of 14,000 turkeys toms at the same age, provided by the same local hatchery and were housed at a stocking density of 23 birds m-2. Three 13 m² boxes with 300 turkeys each were placed inside the poultry houses....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air renewal; Gases; Poultry house; Thermal comfort.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100002

Mitsuokella Jalaludinii Supplementation Improved Nutrient Utilization of Broilers Fed Low-Available Phosphorus Diet
Provedor de dados: 89
Autores: Tang,HC; Sieo,CC; Abdullah,N; Chong,CW; Omar,AR; Mohamad,R; Ho,YW; Yong,CY.
ABSTRACT Phytase enzyme is supplemented to poultry feed to improve phosphorus (P) availability. Mitsuokella jalaludinii, bacteria isolated from the rumen of cattle, has been reported as a cheaper alternative source of phytase. As much nutrients are trapped within the phytate complex, we hypothesized that the supplementation of M. jalaludinii phytase to poultry feed would enhance nutrient utilization by poultry. In the current study, the efficacy of freeze-dried M. jalaludinii cells (Mj) as feed supplement for broilers fed low-available phosphorus (low-aP) diet was evaluated. Day-old male Cobb raised in battery cages were assigned to three treatment groups [normal-available phosphorus diet with heat-deactivated Mj (DMj); low-aP diet with DMj; and low-aP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Mineral retention; Mitsuokella jalaludinii; Nutrient utilization; Phytase.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100303

Mixed crude glycerin in laying hen diets: live performance and egg quality and fatty acid profile
Provedor de dados: 89
Autores: Duarte,CRA; Murakami,AE; Boso,KMO; Eyng,C; Ospina-Rojas,IC; Matumoto-Pintro,PT.
This study evaluated the performance and the quality and fatty acid profile of eggs from laying hens fed diets containing mixed crude glycerin (MCG; 80% vegetable fat + 20% animal fat). A total of 240 39-week-old Hy-Line W36 laying hens were distributed according to a completely randomized experimental design into six treatments consisting of graded MCG dietary inclusion levels (0, 1.5, 3.0, 4.5, 6.0, and 7.5%), with five replicates of eight birds each. Feed intake linearly decreased (p&lt;0.05) with increasing MCG inclusion levels. The percentages of myristic, palmitic, and α-linolenic acids in the eggs linearly decreased as MCG dietary levels increased (p&lt;0.05), while α-linoleic acid, polyunsaturated fatty acids (PUFA) and ω-6/ω-3 ratio linearly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Excreta moisture; Eggs; Fatty acids; Glycerin; Glycerol; Lipid profile.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400003

Modelagem Computacional para Produção e Pesquisa em Avicultura
Provedor de dados: 89
Autores: Rondón,EOO; Murakami,AE; Sakaguti,ES.
A modelagem computacional foi apresentada como uma ferramenta na tomada de decisões para solucionar problemas complexos e cotidianos na produção e pesquisa em avicultura. Aspectos teóricos relacionados à construção e implementação dos diferentes tipos de modelos matemáticos utilizados em avicultura foram descritos de maneira elementar, tentando deixar o artigo acessível às pessoas que não necessariamente possuem um forte conhecimento de estatística experimental. Uma ênfase especial foi dada à discussão das vantagens da modelagem para resolver o problema complexo de determinar exigências nutricionais das aves em diferentes condições. Uma revisão cronológica das publicações relacionadas aos pacotes computacionais desenvolvidos para auxiliar na formulação de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelos matemáticos; Sistemas de produção; Simulação; Computadores.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100001

Modeling energy utilization in broiler breeders, laying hens and broilers
Provedor de dados: 89
Autores: Sakomura,NK.
The factorial approach has been used to partition the energy requirements into maintenance, growth, and production. The coefficients determined for these purposes can be used to elaborate energy requirement models. These models consider the body weight, weight gain, egg production, and environmental temperature to determine the energy requirements for poultry. Predicting daily energy requirement models can help to establish better and more profitable feeding programs for poultry. Studies were conducted at UNESP-Jaboticabal to determine metabolizable energy (ME) requirement models for broiler breeders, laying hens, and broilers. These models were evaluated in performance trials and provided good adjustments. Therefore, they could be used to establish...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Broiler breeders; Energy metabolism; Energy requirement; Factorial approach; Laying hens; Modeling.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100001

Modelling energy utilization for laying type Pullets
Provedor de dados: 89
Autores: Neme,R; Sakomura,NK; Fialho,FB; Freitas,ER; Fukayama,EH.
Three trials were carried out to determine energy metabolized (EM) requirement model for starting and growing pullets from different strains, at five ambient temperatures and different percentage feather coverage. In Trial I, metabolizable energy requirements for maintenance (MEm) and efficiency of energy utilization were estimated using 64 birds of two different strains, Hy-Line W36 (HLW36) and Hy-Line Semi-heavy (HLSH), from 9 to 13 weeks of age. The effects of ambient temperature (12, 18, 24, 30 and 36ºC) and percentage feather coverage (0, 50 and 100%) on MEm were assessed in the second trial, using 48 birds per temperature per strain (HLSH and HLW36) from 9 to 13 weeks of age. Trial III evaluated ME requirements for weight gain (MEg) using 1,200 birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Energy requirements; Feather coverage; Laying hens; Model; Temperature.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100007

Models for the analysis of growth curves for rearing tinamous (Rhynchotus rufescens) in captivity
Provedor de dados: 89
Autores: Tholon,P; Queiroz,SA.
Growth curves models provide a visual assessment of growth as a function of time, and prediction body weight at a specific age. This study aimed at estimating tinamous growth curve using different models, and at verifying their goodness of fit. A total number 11,639 weight records from 411 birds, being 6,671 from females and 3,095 from males, was analyzed. The highest estimates of a parameter were obtained using Brody (BD), von Bertalanffy (VB), Gompertz (GP,) and Logistic function (LG). Adult females were 5.7% heavier than males. The highest estimates of b parameter were obtained in the LG, GP, BD, and VB models. The estimated k parameter values in decreasing order were obtained in LG, GP, VB, and BD models. The correlation between the parameters a and k...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth parameters; Growth evaluation; Non-linear models; Wild birds.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100004

Modulation of Physiologic Parameters in Molted Isa Brown Laying-Hens by Glutamine + Glutamic Acid Supplementation
Provedor de dados: 89
Autores: Morales,W; Rodríguez,V; Garcia,NV.
ABSTRACT Feed costs are the main limiting factors in poultry industry and alternative sources of food and/or feed supplements to optimize the bird´s life cycle and to extend their production period need to be explored. This study evaluated morphometric parameters of the small intestine and gonadotropin transcript levels in Isa Brown laying hens supplemented with glutamine + glutamic acid (Aminogut®) during a second production cycle. Molting was induced and groups of 100 hens each, were supplemented with 0, 0.8, 1.6 or 2.4% Aminogut® in their diet. At the end of the experimental period, tissue sections from duodenum, jejunum and ileum were processed by the Hematoxylin-Eosin technique and samples from hypothalamus and hypophysis were collected for RT-PCR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acids; Gonadotropin; Morphometry; RT-PCR; Small intestine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200255

Molecular Authentication of Meats from Three Terrestrial Birds Based on Pcr-Rflp Analysis of the Mitochondrial 12S rRNA Gene
Provedor de dados: 89
Autores: He,H; Wang,Y; Qing,Y; Li,D; Zhao,X; Zhu,Q; Yin,H.
ABSTRACT In this study, a method utilizing PCR-restriction fragment length polymorphism (PCR-RFLP) of a mitochondrial gene was developed for the identification of chicken (Gallus gallus), quail (Coturnix coturnix), and common pigeon (Columba livia) meat. PCR products of ~440 bp were obtained from the 12S rRNA gene of these three birds using a pair of universal primers. The three terrestrial birds can be distinguished using one restriction endonuclease, Alu I, which was selected based on species-specific variations in the mt 12S rRNA gene sequence using 9 newly-obtained and 44 published chicken, quail and pigeon sequences. This method was also successfully used to identify commercial quail and pigeon meat products, which were found to be adulterated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 12S rRNA gene; PCR-RFLP; Terrestrial bird; Meat identification; Species-specific variations.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400651

Molecular Characterization of Goose Phosphoenolpyruvate Carboxylase Kinase 1 (Pepck) Gene and Its Potential Role in Hepatic Steatosis Induced by Overfeeding
Provedor de dados: 89
Autores: Tang,B; Yang,C; Hu,S; Sun,W; Pan,Z; Li,L; Wang,J.
ABSTRACT Over-accumulation of triglycerides (TGs) in goose hepatocytes leads to the formation of fatty acid liver. Phosphoenolpyruvate carboxylase kinase 1 (PEPCK) is regarded as the rate-limiting enzyme for gluconeogenesis, and there is evidence that PEPCK is involved in regulating hepatic glucolipid metabolism. Hence, we proposed that PEPCK may have a role in goose hepatic steatosis. To test our hypothesis, the present study was conducted to firstly determine the sequence characteristics of goose PEPCK and then to explore its role in overfeeding-induced fatty liver. Our results showed that goose PEPCK encodes a 622-amino-acids protein that contains highly conserved oxaloacetate-binding domain, kinase-1 and kinase-2 motifs. PEPCK had higher mRNA levels in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goose; PEPCK; Sequence characteristics; Hepatic steatosis; Primary hepatocytes.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400302

Molecular Cloning and Mrna Expression Analysis of Sichuan White Goose (Anser Cygnoides) Chrebp Gene
Provedor de dados: 89
Autores: Xu,HY; Tang,H; Pan,ZX; Li,L; Han,CC; Liu,HH; He,H; Kang,B; Hu,JW; Xia,L; Wang,Y; Wang,JW.
ABSTRACT The carbohydrate response element-binding protein (ChREBP) is an important nuclear factor that regulates glycolysis and de novo lipogenesis. However, the role of ChREBP in fatty liver development in geese remains unclear. In order to understand the function of ChREBP in lipid metabolism of geese, we first cloned the complete cDNA of the ChREBP of the Sichuan White goose (Anser cygnoides) using RT-PCR, 5’ RACE and 3’ RACE, and analyzed goose ChREBP expression in nine different tissues using real-time PCR technology. The results showed that the goose ChREBP CDS consists of 945bp nucleotides that encode 314 amino acids, and the sequence has high similarities with the swan goose (Anser cygnoides domesticus) and duck (Anas platyrhynchos) sequences,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ChREBP; Expression profile; Molecular cloning; RACE; Sichuan White Goose.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400615

Molecular Diagnosis of Beak and Feather Disease in Native Brazilian Psittacines
Provedor de dados: 89
Autores: Araújo,AV; Andery,DA; Ferreira Jr.,FC; Ortiz,MC; Marques,MVR; Marin,SY; Vilela,DAR; Resende,JS; Resende,M; Donatti,RV; Martins,NRS.
ABSTRACT The incidence of the psittacine beak and feather disease virus (BFDV) was investigated in Brazilian native parrots with normal feathering arriving at rescue and triage centers for wild animals (CETAS, IBAMA) in the state of Minas Gerais, Brazil. BFDV DNA was investigated by previously described PCR technique for the partial amplification of BFDV ORF-1 in DNA extracts from blood, cloacal swab or liver of psittacines. Some birds provided more than one sample. Nine species of psittacines were sampled between January 2009 and October 2010. Blood (n=46) or cloacal swab (n=128) samples were obtained from psittacines immediately upon arrival at the triage centers. Liver samples were collected from necropsied birds dead on arrival (n=167). All swab...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BFDV; Macaw; Parrot; Psittacine; Psittacine beak and feather disease.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400451

Molecular Diagnostic of Chicken Parvovirus (ChPV) Affecting Broiler Flocks in Ecuador
Provedor de dados: 89
Autores: Torre,D De la; Nuñez,LFN; Puga,B; Parra,SHS; Astolfi-Ferreira,CS; Ferreira,AJP.
ABSTRACT Enteric diseases affect poultry and cause important economic losses in many countries worldwide. Avian parvovirus has been linked to enteric conditions, such as malabsorption and runting-stunting syndrome (RSS), characterized by diarrhoea, and reduced weight gain and growth retardation. In 2013 and 2016, 79 samples were collected from different organs of chickens in Ecuador that exhibited signs of diarrhea and stunting syndrome, and analysed for the presence of chicken parvovirus (ChPV). The detection method of ChPV applied was Polymerase Chain Reaction (PCR), using primers designed from the conserved region of the viral genome that encodes the non-structural protein NS1. Out of the 79 samples, 50.6% (40/79) were positive for ChPV, and their...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken parvovirus; Enteric diseases; Molecular diagnostic; PCR.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400643

Molecular differentiation of Salmonella Gallinarum and Salmonella Pullorum by RFLP of fliC gene from Brazilian isolates
Provedor de dados: 89
Autores: Paiva,JB; Cavallini,JS; Silva,MD; Almeida,MA; Ângela,HL; Berchieri Junior,A.
Although Salmonella Pullorum and Salmonella Gallinarum cause different diseases in poultry, they are very similar. Both are non-motile and present the same somatic antigenic structure. They are differentiated by biochemical tests. Certain atypical strains are very difficult to distinguish. They do not produce the expected results when dulcitol and ornithine descarxboxylase tests are performed. Therefore, additional tests could be helpful. Many studies have chose the part I of the gene that encodes flagellin (fliC) to differentiate serotypes. Most Salmonella strains have two structural genes (fliC and fliB) that encode flagellins. Non-motile strains generally present these structural genes, but are not able to build a functional flagellum. It was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: FliC gene; Differentiation; Salmonella Gallinarum; Salmonella Pullorum.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400009

Molecular epidemiology and evolution of avian infectious bronchitis virus
Provedor de dados: 89
Autores: Montassier,HJ.
Mutation and recombination processes are involved in the genetic and phenotypic variations of RNA viruses, leading to the emergence of new variant strains, and give rise to virus population diversity to be modeled by the host, particularly by the immune system, as occurred with infectious bronchitis virus (IBV) in chickens. The consequence is a continuous emergence of new IBV variants with regard to pathotypes, serotypes, and protectotypes. Nucleotide sequencing and subsequent genetic analysis of the S1 and N protein gene sequences provide a fast and accurate method to classify and predict IBV genotype, and a powerful instrument to monitor phylogenetic and epidemiological evolution of IBV variants. Despite the use of vaccination programmes, infectious...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Coronavirus; Genetic evolution; Mutation; Prophylaxis; Recombination; Variant strains.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200003

Molecular studies of the Brazilian infectious bronchitis virus isolates
Provedor de dados: 89
Autores: Abreu,JT; Mourão,MM; Santos,CE; Veloso,CJM; Resende,JS; Flatschart,RB; Folgueras-Flatschart,AV; Júnior,SN; Santoro,MM; Mendes,ACR; Franco,GR; Silva,A; Campos,AB; Fernandez,S.
Avian infectious bronchitis virus (IBV) isolates have been widely characterized by reverse transcription followed by polymerase chain reaction and DNA sequencing. In present study, these techniques were applied to three viral genomic regions comprising the complete and/or a partial S1 segment, S2 and nucleocapsid genes. DNA sequences from viral isolates obtained from 1972 to 1989 and from 2006 to 2008 were compared. High similarity (&gt;90%) was observed among some of the genomic segments, including S1 hypervariable region, which could suggest a common origin or ancestry. DNA sequences from S2 and N protein genes obtained from different infected tissues of the same flock were analyzed, and a clear segregation between respiratory and intestinal tract was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious bronchitis virus; Genotyping; Spike glycoprotein; Nucleocapsid; Phylogenetic tree.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200005

Molecular surveillance of the Newcastle disease virus in domestic and wild birds on the North Eastern Coast and Amazon biome of Brazil
Provedor de dados: 89
Autores: Thomazelli,LM; Araujo,J de; Ferreira,C de S; Hurtado,R; Oliveira,DB; Ometto,T; Golono,M; Sanfilippo,L; Demetrio,C; Figueiredo,ML; Durigon,EL.
Brazil is one of the world's largest countries with a rich diversity of wildlife, including resident and migratory wild birds, which may be natural reservoirs of the Newcastle disease virus (NDV). Because Brazil is a major global exporter of chicken meat, the emergence of such a disease may have a huge negative impact not only on the economy due to trade restrictions and embargoes, but also on the quality of life of the population. Samples were collected from 1,022 asymptomatic domestic and wild birds from the Brazilian coast and the Amazon region using tracheal/cloacal swabs and tested by RT-qPCR. The results showed 7 (0.7%) birds were positive for NDV. The positive samples were then isolated in embryonated chicken eggs and their matrix protein genes were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian disease; Avian paramyxovirus; Newcastle disease virus; South America; Wild birds.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100001

Morphological asymmetry and broiler welfare
Provedor de dados: 89
Autores: Nääs,IA; Sonoda,LT; Romanini,CEB; Morello,GM; Neves,HAF; Baracho,MS; Souza,SRLS; Menezes,AG; Mollo Neto,M; Moura,DJ; Almeida Paz,ICL.
Health status, feed conversion ratio, and mortality are long known broiler chicken production indicators. However, further parameters are required by today's demanding meat markets, as these indicators are not sufficiently accurate to determine flock overall welfare. Morphological asymmetry has been pointed as an alternative welfare indicator as it reflects the ability of the bird to cope with the challenges that rearing conditions may impose. This study aimed at evaluating the possibility of using morphological asymmetry as a welfare indicator. Broilers from 28 to 42 days of age were used in the trial. Birds were randomly selected in a commercial poultry farm and transported to the laboratory. They walked over the force measurement platform in order to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare assessment; Broiler feet force; Broiler leg abnormalities; Welfare indicator.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400003

Morphological changes of the intestinal mucosa of broilers and layers as affected by fasting before sample collection
Provedor de dados: 89
Autores: Zavarize,KC; Sartori,JR; Gonzales,E; Pezzato,AC.
The present study aimed at evaluating the histo-morphological changes resulting from different fasting periods before the collection of tissue samples in different segments of the small intestine (duodenum, jejunum and ileum) of 7-d-old male chicks of a broiler and a layer strain. A completely randomized experimental design in in a 2x7 factorial arrangement, being two strains with different growth rates (Ross 308 and HyLine® W36) and seven fasting periods (0, 2, 4, 6, 8, 10 and 12 hours ), with six replicates, totaling 84 birds. The comparison of the morphometrics of the duodenum, jejunum and ileum of broiler and layer chicks demonstrated faster digestive tract development in broilers relative to layers. The fasting period caused morphological changes in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fasting; Intestine; Morphology; Organs; Strain.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100004

Morphological genetic markers for selection of broiler lines
Provedor de dados: 89
Autores: Schmidt,GS; Coutinho,LL; Figueiredo,EAP de; Ledur,MC; Alves,HJ.
Two paternal broiler lines (LL and LLc, originated from the same stock in 1998) of Embrapa Suinos e Aves genetic program were used. Line LL had been selected for eight generations for rapid growth while LLc had been mated randomly, without selection, as a control line. In the last generation, 30 males and 240 females were used in hierarchical matings with pedigree control to determine sire effect. The same number of birds were used, but matings were at random for LLc. Eggs of both lines were incubated and embryos were collected in different development stages (40, 45, 50, 55 and 60 hours after setting) in order to determine somite number (NOS). The number of evaluated embryos were 1,967 and 498 for LL and LLc, respectively. This study aimed to determine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic; Heritability; Selection; Somite.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300003

Morphological Investigations of the Effect of Thermal Manipulation During Embryogenesis on Body Performance and Structure of Pectoral and Thigh Muscle of Ross Broiler Chicken
Provedor de dados: 89
Autores: Dalab,AS; Ali,AM.
ABSTRACT The aim of this study was to determine the optimum timing of thermal manipulation during early, mid, late and long lasting embryogenesis that may result in improvement of body performance and myofiber development (fiber diameter and thickness of perimysium) of pectoral and thigh muscles by a comparative morphometrical investigation on post-hatch day 35. 1440 fertile Ross broiler eggs were divided randomly and equally into 5 treatment groups: control (no TM), TM1, TM2 TM3 and TM4 were thermally subjected to 39ºC for 18h with 65% relative humidity daily during embryonic days ED 7-11, ED 11-15, ED 15-18 and ED 7-18 respectively. Out of TM conditions that were investigated, TM1 resulted in a significant improvement of hatchability rate (95.14%)and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermal Manipulation; Broiler Embryogenesis; Morphometrical Analysis; Pectoral and Thigh Muscles; Myofiber.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400328

Morphology, Blood Chemistry and Behavioral Response of Crossbred Chickens Reared Under Alternative Production Systems
Provedor de dados: 89
Autores: Usman,M; Mahmud,A; Hussain,J; Javid,A.
ABSTRACT In the present study, the second generation of two genotypes RNN (Rhode Island Red × Naked Neck) and BNN (Black Australorp × Naked Neck) obtained by two self-crosses (RNN × RNN =RR and BNN × BNN= BB) and two reciprocal crosses (RNN × BNN = RB and BNN × RNN = BR) were evaluated in three alternative production systems (conventional cages, enriched cages, and aviary). In total 480 birds, comprising 240 pullets with 240 cockerels (60 pullets &amp; 60 cockerels from each crossbred) were used during rearing phase (17-21 weeks). Higher body weight, shank circumference, body and drumstick length were noticed in RB and BR genotypes. Among different production systems, chickens reared in enriched cages showed higher body weight and body lengths than other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative production systems; Antibody response; Genotypes; Morphometrics; Serum chemistry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200312

Morphometric Parameters of Erythrocytes in Juvenile Mandarin Ducks Aix galericulata
Provedor de dados: 89
Autores: Prokić,VS; Davidov,I; Belić,B; Novakov,N; Aleksić,J; Lakić,I.
ABSTRACT The morphometric parameters of erythrocytes in Mandarin ducks- Aix galericulata have never been subjected to study even though this species is common in aviculture. The aim of this study is to investigate the morphometric parameters of erythrocytes in juvenile Mandarin ducks. A total of 1500 erythrocytes obtained from thirty Mandarin ducks were analysed. The smears of the peripheral blood were stained using Diff-Quik® stain method, and the length and width of erythrocytes were measured using ImageJ program. The average length of the measured erythrocytes was 11.879 µm. The maximal measured length of the erythrocytes was 16.049 µm, and the minimal measured length was 5.668 µm. The average width of the measured erythrocytes was 6.160 µm. The maximal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood smears; Erythrocytes; Mandarin duck; Morphometric parameters.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200343

Morphometric Traits, Serum Chemistry and Antibody Response of Three Chicken Genotypes under Free-Range, Semi-Intensive and Intensive Housing Systems
Provedor de dados: 89
Autores: Ahmad,S; Mahmud,A; Hussain,J; Javed,K.
ABSTRACT The present study evaluated the effect of housing system on the morphometrics, serum chemistry and antibody response of dual-purpose chicken genotypes. A total of 156 pullets and 39 cockerels were randomly picked from 18 treatment block groups (3 housing system × 3 genotypes × 2 sexes) according to Randomized Complete Block Design (RCBD). Three genotypes, purebred Naked Neck (NN) and two crossbred Rhode Island Red × Naked Neck (RIR × NN = RNN) and Black Australorp × Naked Neck (BAL × NN = BNN), were compared. Morphometric traits were recorded during rearing period, thereafter, serum chemistry and antibody response were evaluated in pullets. Intensive and semi-intensive chickens were heavier (males, p=0.0012; females, p&lt;0.0001) on week 21. Body...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibody response; Chicken genotypes; Housing system; Morphometrics; Serum chemistry.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100327

Morphometry and ultra-structure of the intestinal mucosa of broilers fed different additives
Provedor de dados: 89
Autores: Pelicano,ERL; Souza,PA; Souza,HBA; Figueiredo,DF; Amaral,CMC.
This study aimed at evaluating the effect of the use of different growth promoters on the morphometry and ultra-structure of the intestinal mucosa of 42-day-old broilers. A total number of 36 male Cobb broilers was distributed in a randomized experimental design with a 3 x 3 factorial arrangement, with 3 prebiotic and 3 probiotic sources in the feed, summing up 9 treatments, with 4 replicates each. There was a significant interaction (P&lt;0.01) among the studied factor for villi height (VH) in all intestinal segments, and for crypt depth (CD) in the duodenum and the ileum. In the duodenum, higher villi were obtained in the control group, with the combination of B. subtilis and prebiotics, and with the single use of MOS+OA. No VH differences were observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Probiotics; Prebiotics; Digestive system; Intestinal villi.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300006

Multi-Attribute Evaluation and Selection of Broiler House for the Low Prevalence of Footpad Lesion
Provedor de dados: 89
Autores: Garcia,RG; Roriz,BC; Nääs,IA; Lima,NDS; Sgavioli,S; Caldara,FR.
ABSTRACT Intensive broiler production requires large flock density, which compromises litter quality and increases the prevalence of footpad lesions. The present study aimed at comparing the incidence of footpad dermatitis of broilers reared in two different rearing environments. Data from two broiler houses were recorded during 42 d. Air temperature and relative humidity; litter moisture, pH, and temperature; footpad surface temperature; and the incidence of footpad lesions was investigated. Litter quality was analyzed in a 2 x 4 factorial arrangement, with two house types (dark house or open-sided house) and four rearing phases (21, 28, 35, and 42 d of growth), with four replicates per treatment using 12 replicates. Four replicates were used for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Litter quality; Rearing environment; Broiler management; Footpad dermatitis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100301

Multi-criteria analysis of the influence of rearing, equipment, and catching management practices on the Incidence of back scratches in broilers
Provedor de dados: 89
Autores: Pilecco,M; Almeida Paz,IC de L; Tabaldi,LA; Nääs,IA; Garcia,RG; Caldara,FR; Andrela,GO.
Carcass quality is one of the main parameters to evaluate broiler welfare, and the presence of back scratches indicates that the birds were submitted to stress. The objective of this study was to identify the best management practices during rearing and catching, taking into consideration broiler genetic differences (genetic lines A and B) and sexes. The survey was carried out in 351 broiler houses belonging to an integrated company and located in the region of Dourados, MS, Brazil. Between January and October, 2010, 2% of broilers of all ages (one to 43 days old) in all flocks were sampled. The sampled flock was evaluated in 21 d intervals. Scratches were classified as present or absent. The results indicated that catching management has the strongest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AHP; Poultry production; Catching; Carcass.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400007

Multi-Criteria Analysis to Prioritize Energy Sources for Ambience in Poultry Production
Provedor de dados: 89
Autores: Collatto,DC; Mansilha,RB; Chiwiacowsky,LD; Lacerda,DP.
ABSTRACT This paper intends to outline a model of multi-criteria analysis to pinpoint the most suitable energy source for heating aviaries in poultry broiler production from the point of view of the farmer and under environmental logic. Therefore, the identification of criteria was enabled through an exploratory study in three poultry broiler production units located in the mountain region of Rio Grande do Sul. In order to identify the energy source, the Analytic Hierarchy Process was applied. The criteria determined and validated in the research contemplated the cost of energy source, leadtime, investment in equipment, energy efficiency, quality of life and environmental impacts. The result of applying the method revealed firewood as the most appropriate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry raising; Heating; Energy sources; Decision making; Analytic hierarchy process.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300363

Naturally Occurring Co-infection of Avian Leukosis Virus (subgroups A-E) and Reticuloendotheliosis Virus in Green Peafowls (Pavo muticus)
Provedor de dados: 89
Autores: Khordadmehr,M; Firouzamandi,M; Zehtab-Najafi,M; Shahbazi,R.
ABSTRACT Most of the neoplastic diseases affecting poultry have a viral etiology, such as Marek’s disease, avian leukosis/sarcoma and reticuloendotheliosis. In the present paper, histopathology and molecular methods were performed, in addition of necropsy and gross morphology evaluation, for the differential diagnosis of these diseases in two green peafowls (Pavo muticus). The affected birds showed non-specific signs, such as depression, anorexia, and diarrhea. At necropsy, diffuse enlargement by several times the normal size of the liver and the spleen was observed. In one of the birds, the liver presented white to grayish discoloration was present, and focal and nodular growths in the other bird. Grossly, the other visceral organs and the peripheral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Green peafowl; Lymphoid leukosis; Marek’s disease; Neoplastic diseases; Reticuloendotheliosis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400609

New Isospora and Host Species in Brazilian Passerines
Provedor de dados: 89
Autores: Barreto,C; Vilela,DAR; Houri,BF; Lara,LB; Torres,ACD; Silva,ASG; Castro Filho,RPL; Costa,CS; Martins,NRS.
ABSTRACT Normal passerines (n=216) were evaluated for oocysts of Isospora in feces at the Triage Center for Wild Animals (CETAS, IBAMA, Belo Horizonte; August 21 to September 21, 2012). The positive samples with oocysts represented 13.0% of Cardinalidae (n=23), 11.2% of Emberizidae (n=107), 50% of Icteridae (n=10) and 60.3% of Thraupidae (n=68). The probability of fecal oocysts attributable to the host in Thraupidae is higher than in Cardinalidae, Emberizidae, Fringillidae and Turdidae, but similar to Icteridae. No oocysts were found in Fringillidae and Turdidae. Within Thraupidae, Isospora was for the first time described in Paroaria dominicana and Schistochlamys ruficapillus and within Icteridae, in Gnorimopsar chopi. Saltator similis presented a higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apicomplexa; Gnorimopsar chopi; Isospora chopi; Isospora gnorimopsar; Paroaria dominicana; Isospora dominicana; Saltator similis; Isospora beagai; Isospora ferri; Schistochlamys ruficapillus; Isospora ruficapillus.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100309

NEW OCCURANCE OF AVIAN ENCEPHALOMYELITIS IN BROILER - IS THIS AN EMERGING DISEASE?
Provedor de dados: 89
Autores: de,Freitas ES; Back,A.
ABSTRACTAvian encephalomyelitis is caused by an Hepatovirus and primarily affects chickens. Chickens of all ages are susceptible to the virus, but the nervous symptoms are manifested only in young chicks, between one to five weeks of age. During the last thirty years, avian encephalomyelitis appeared to be well controlled by breeder vaccination. However, the increase of the number of cases is causing concern in the poultry industry. In the present study, we performed a retrospective analysis of the cases presenting histological lesions compatible with avian encephalomyelitis in broilers. The evaluated cases affected broilers from one to 35 days old from the southern region of Brazil. Only cases with compatible microscopic lesions and associated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reemerging; Disease; Young chickens; Virus.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300399

Newcastle disease in white Pekin ducks: response to experimental vaccination and challenge
Provedor de dados: 89
Autores: Nishizawa,M; Paulillo,AC; Nakaghi,LSO; Nunes,AD; Campioni,JM; Doretto Júnior,L.
A total of 120 Pekin ducks were distributed at random into four experimental groups, vaccinated or not against Newcastle disease (ND): G1 (Ulster 2C strain), G2 (B1 strain), G3 (LaSota strain), and G4 (nonvaccinated group). At 60 days of age, all groups were challenged with a pathogenic ND virus (NDV) suspension, and a group of specific pathogen free (SPF) chicks (G5) was also inoculated. Cloacal and tracheal swabs from all birds were collected after six, 14, 20, and 30 days post-challenge for virus isolation. NDV was isolated in 100% of SPF chicks. Pekin ducks from all groups, vaccinated or not, did not show any ND clinical signs, demonstrating that these birds are not susceptible to ND clinical disease. In the control group (G4), the virus was isolated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anas platyrhynchos; NDV carrier; Newcastle disease; Pekin duck; Vaccination.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200008

Newcastle disease virus infection in sparrows (Passer domesticus, Linneaus, 1758) captured in poultry farms of the agreste region of the State of Pernambuco
Provedor de dados: 89
Autores: Silva,JSA; Mota,RA; Vilela,SMO; Doretto Júnior,L; Pinheiro Júnior,JW; Silva,LBG.
Reservoir competence for the Newcastle Disease virus (NDV) was evaluated in sparrows (Passer domesticus, Linnaeus 1758) captured on a commercial poultry farm and a chicken hatchery in the State of Pernambuco, Northeastern Brazil. A total number of 103 birds collected from a poultry farm (24/103) and a chicken hatchery (79/103) were examined. Hemagglutination inhibition tests, isolation, and viral characterization were performed in all samples collected from each bird. Titers ranging from 1:2 to 1:64 were detectable in 10.68% of sparrows, but positive serology and viral isolation were obtained only from sparrows captured at the hatchery. Hemagglutination activity was inhibited by anti-avian paramyxovirus serotype 1 (APMV-1) serum, and this sample showed an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Newcastle Disease; Sparrows; Reservoir; Isolation; Serology (HI); Poultry farm; Lentogenic strains (B1).
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200009

Newcastle disease virus vaccine strains: immunogenicity is not influenced by ICPI
Provedor de dados: 89
Autores: Orsi,MA; Doretto Júnior,L; Reischak,D; Silva,LHA da; Spilki,FR; Buzinaro,MG; Arns,CW.
Intracerebral pathogenicity index (ICPI) and mean death time (MDT) were determined using commercial live vaccines against Newcastle disease available in Brazil. The ICPI profiles obtained for B1 vaccine strains were nonvirulent and varied from 0 to 0.19, and their MDT was 104-116 hours. The LaSota strains had an ICPI varying between 0.02 and 0.37 and MDT from 92 to 116 hours. ICPI and MDT for the Clone 30 were 0.11 and 104 hours, respectively. For Ulster vaccines, ICPI and MDT were 0 and &gt;150 hours; for VG-GA was 0.03 and 140 hours; and for C2, 0.04 and &gt;144 hours. Eye drop vaccination and IM challenge, at the 1st week and the 4th week, respectively, resulted in highest protection for B1 (95-100%) and LaSota (90-100%) strains. The variability in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Newcastle disease virus (NDV) vaccines; Intracerebral pathogenicity index (ICPI); Mean death time (MDT).
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200009

Níveis de Ruídos na Produção de Matrizes Pesadas: Estudo de Caso
Provedor de dados: 89
Autores: Nääs,IA; Miragliotta,MY; Baracho,MS.
O setor econômico de produção de matrizes pesadas emprega um grande número de pessoas que permanecem cerca de 44 horas semanais dentro tanto das granjas de recria e produção, como nas salas adjacentes à câmara incubatória. O trabalho levantou os dados de níveis de ruídos em um sistema de produção de matrizes pesadas e de ovos férteis, nos galpões de recria do tipo Dark House, e produção de ovos nas salas de vacinação de pintinhos e de acondicionamento de ovos férteis, em dois dias consecutivos, por um período de 8 horas, durante as horas em que os trabalhadores se encontravam dentro dos locais. Os registros de nível de ruídos foram efetuados utilizando-se um equipamento nível sonoro marca Lutron SL 4001. Foram coletados os dados médios de nível normal e de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nível de ruído; Incubatório; Galpões; Aviário; Recria; Produção.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200003

Non-Linear Model to Describe Growth Curves of Commercial Turkey in the Tropics of Mexico
Provedor de dados: 89
Autores: Segura-Correa,JC; Santos-Ricalde,RH; Palma-Ávila,I.
ABSTRACT The objective of this study was to select the best non-linear model that fits the growth curve of turkeys managed under the tropical conditions of Southern Mexico. Data from 481 Hybrid converter turkeys (236 females and 245 males) reared under commercial conditions typical of that region were used. Turkeys were given ad libitum access to feed and water. Body weight was weekly recorded from 1 day to 23 weeks of age. Five non-linear mathematical models (Brody, Gompertz, Logistic, von Bertalanffy and Richards) were chosen to describe the age-weight relationship. The Brody and Richards' models fail to converge. The best fitting model was chosen based on the average prediction error (APE); the multiple determination coefficient R2 and the Akaike...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bertalanffy; Gomperz; Logistic; Body weight.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100027

Nutrição Pós-Eclosão de Frangos de Corte
Provedor de dados: 89
Autores: Vieira,SL; Pophal,S.
A emergência da casca marca o final do período de incubação das aves. Esse período pode ter extremos que vão de 480 a 510 horas em galinhas domésticas. As aves precociais nascem com reservas nutricionais provenientes do albúmen e gema residuais contidos no saco vitelino, que são importantes nas primeiras horas de vida enquanto ocorre a adaptação à alimentação independente, com recursos obtidos no meio ambiente. Aparentemente, os pintainhos de corte não apresentam restrições significativas com relação à utilização dos nutrientes obtidos externamente. Uma exceção, de importância questionável, pode ser a possível redução na capacidade de emulsificação das gorduras devido a uma menor concentração de sais biliares momentaneamente disponíveis. Entretanto, o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frangos; Nutrição e pós-eclosão.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300001

Nutrient balance of layers fed diets with different calcium levels and the inclusion of phytase and/or sodium butyrate
Provedor de dados: 89
Autores: Vieira,MM; Kessler,AM; Ribeiro,AML; Silva,ICM; Kunrath,MA.
In this study, Hisex Brown layers in lay were evaluated between 40 and 44 weeks of age to evaluate the inclusion of bacterial phytase (Ph) and sodium butyrate (SB) to diets containing different calcium levels (CaL). Performance, average egg weight and eggshell percentage, in addition to nutrient metabolizability and Ca and P balance were evaluated for 28 days. Birds were distributed according to a completely randomized experimental design with a 3x2x2 factorial arrangement, with three calcium levels (2.8, 3.3, 3.8%); the addition or not of phytase (500PhU/kg) and the addition or not of sodium butyrate (20mEq/kg), composing 12 treatments with eight replicates of one bird each. There was no additive effect of phytase or SB on the evaluated responses. Feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial phytase; Brown layers; Ca and P; Metabolizability; Organic acids.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200011

Nutritional and microbiological evaluation of meat and bone meal produced in the state of Minas Gerais
Provedor de dados: 89
Autores: Sartorelli,SA; Bertechini,AG; Fassani,EJ; Kato,RK; Fialho,ET.
The present study investigated the chemical composition and metabolizable energy levels of ten meat and bone meals (MBM) produced in Minas Gerais state (Experiment I) and evaluated the growth performance of broilers fed with diets containing those MBM (Experiment II). In the first experiment, energy values (apparent metabolizable energy [AME] and corrected apparent metabolizable energy [AMEn]) of ten different MBM were determined using the traditional method with total collection of excreta. Four hundred forty 21 day-old Hubbard broilers were used. A reference corn and soybean meal-based diet was replaced in 20% by the feed containing MBM to be tested. A completely randomized experimental design was used with eleven treatments (one reference diet and ten...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Ingredient; Meat and bone meal; Metabolizable energy; Salmonella.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100007

Nutritional Balance of broilers fed diets containing two calcium levels and supplemented with different phytase levels
Provedor de dados: 89
Autores: Donato,DCZ; Ribeiro,P de AP; Magalhães,JD; Polycarpo,G do V; Garcia,PDSR; Burbarelli,MF de C; Albuquerque,R de.
The objective of this study was to evaluate the effect of diets containing different calcium and phytase levels on the nutritional balance of broilers.A total of 108 male AG Ross 308 broilers were used in each of the replicates phases used in the study: starter (1-21 days), grower (29-35 days) and finisher (36-42 days). A completely randomized experimental design in a 3 x 2 factorial arrangement, with three phytase levels (0, 600 or 1200 FTU/kg) and two calcium levels (0.94 and 0.66%; 0.84 and 0.59%; e 0.78 and 0.54% in the starter, grower, and finisher phases, respectively), totaling six treatments with six replicates each.The experimental feeds also contained reduced available phosphorus levels and minimum crude protein level.The method of total excreta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzymes; Calcium; Broilers.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400010

Nutritional Evaluation of Soybean Hulls with or without β-Mannanase Supplement on Performance, Intestinal Morphometric and Carcass Yield of Broilers Chickens
Provedor de dados: 89
Autores: Scapini,LB; Rorig,A; Ferrarini,A; Fülber,LM; Canavese,M; Silva,AM; Fernandes,JIM.
ABSTRACT The objective was to evaluate the performance, intestinal morphology and carcass yield of broilers fed corn-soybean meal (SBM) diet or corn-SBM-soybean hull (SH) with or without b-mannanase supplementation. Thousand four hundred and forty Cobb Slow-male- chicks were housed design following a factorial scheme 2 x 2 (corn-SBM diet and corn-SBM-SH diet vs with and without b-mannanase), composing 4 treatments and 9 replicates each treatment, with 40 birds each replicate. At 21 days, corn-SBM diet supplemented with b-mannanase resulted in better (p&lt;0.05) feed conversion. At 42 days, the weight gain (p&lt;0.05) and feed intake (p&lt;0.05) of the birds fed diets containing SH was 2.6% and 2.9% higher than that of birds fed corn-SBM diets,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soybean meal; Intestinal mucosa; Enzyme; Non-starch polysaccharides.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400633

Nutritional Quality of Eggs of Amberlink and Hyline Layers Fed on Different Levels of Provitamin A-Biofortified Maize
Provedor de dados: 89
Autores: Zeina,GW; Kolanisi,U; Chimonyo,M.
ABSTRACT The study was conducted to determine the interaction of types of maize (Provitamin A-biofortified maize (PABM) versus white maize) and strain of laying birds (Amberlink and Hyline) on nutritional quality of eggs. Twenty-one of each of Amberlink and Hyline laying hens were fed on three diets for 30 days. Birds were distributed in a 3 × 2 factorial arrangement constituting three diets (0, 50 or 100 % of PABM) and two strains (Amberlink &amp; Hyline). There was a diet × strain interaction on egg shell weight, average daily feed intake, egg production, egg weight and egg shell thickness. Eggs produced by layers under 100 % PABM had lighter eggshell weight and lower eggshell percentage. In contrast, eggs produced by layers under 50 % PABM diet had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg productivity; Eggshell quality; Vitamin A; Yolk colour.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200281

O Comportamento das Aves
Provedor de dados: 89
Autores: Campos,EJ.
Os estudos sobre o comportamento das aves, principalmente as galinhas, datam de 1912, quando o gênero Gallus passou a ser estudado com mais intensidade na área da Genética. Tais estudos eram simplesmente filosóficos até o início da década de 80, quando uma nova era da produção industrial avícola surgiu, objetivando um maior volume de produção econômica em todas as áreas de exploração. Esse objetivo reativou de maneira científica os estudos de comportamento das aves face à tecnologia de produção empregada nos sistemas de exploração, tornando-os mais acentuados já na década de 90, culminando com um simpósio internacional realizado nos Estados Unidos onde foram traçados os objetivos ou linhas de pesquisas na exploração avícola. O intuito era evitar problemas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comportamento das aves; Frangos de corte; Galinhas de postura; Galos; Repordutoras.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200001

Occurrence and Epidemiology of Fannia Spp. (Diptera: Fanniidae) in Laying Poultry Farms in State of Minas Gerais, Brazil
Provedor de dados: 89
Autores: Rezende,LC; Oliveira,TM; Teixeira,CM; Oliveira,PR; Martins,NRS; Cunha,LM.
ABSTRACT Aspects related to epidemiology of flies belonging to Fannia genus were studied in order to determine predisposing factors for its occurrence in layer hens houses of commercial farms in the state of Minas Gerais, Brazil. An observational, analytical and sectional survey was conducted to verify major epidemiological aspects associated to infestations. This research was accomplished starting from an adapted secondary database of and structured with information on the presence and absence of ectoparasites and arthropods, characteristics of chicken houses, the poultry, type of facilities, geographical location and the management. The study was conducted in four hundred and thirty one houses located in forty three farms visited in 2012 year in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flies; Laying hens; Management of poultry manure.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300419

Occurrence of Avian Mycoplasmas in Free-Living Muscovy-Ducks (Cairina Moschata)
Provedor de dados: 89
Autores: Magalhães,BSN; Pereira,VLA; Machado,LS; Dias,TS; Balthazar,DA; Barreto,ML; Troccoli,F; Cunha,NC; Nascimento,ER; Almeida,FM; Almosny,NR.
ABSTRACT The present study aimed to investigate, by culture and PCR, the occurrence of Mollicutes, Mycoplasma gallisepticum and Mycoplasma synoviae in free-living Muscovy-ducks (Cairina moschata) from the Rio Zoo, RJ, Brazil. Tracheal swabs were obtained from 82 asymptomatic ducks and the samples were submitted to culture of mycoplasmas and PCR for identification of Mollicutes Class, Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS). Samples were also analyzed directly by PCR, without prior culture, for Mollicutes, MG and MS. Eighteen (18/82) Muscovy-ducks were positive for Mollicutes by culture, all isolates were confirmed as Mollicutes and seven were identified as MG. Of the samples analyzed directly by PCR, without prior culture, 17,1% (14/82)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anseriformes; Free-living; Mollicute Class; Muscovy-ducks; Mycoplasmosis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400315

Occurrence of chicken anemia virus in backyard chickens of the metropolitan region of Belo Horizonte, Minas Gerais
Provedor de dados: 89
Autores: Barrios,PR; Marín,SY; Resende,M; Rios,RL; Resende,JS; Horta,RS; Costa,MP; Martins,NRS.
The occurrence of CAV in backyard chickens in the metropolitan area of Belo Horizonte, Brazil, was evaluated. The spleen and thymus of chickens from different origins were collected for DNA extraction and nested-PCR. CAV genome was detected in 30% of the flocks (n=20) examined. CAV origin for backyard chickens is speculated, taking into consideration its widespread incidence in the chicken industry, the contamination of live vaccines with CAV prior to its eradication from SPF flocks, and the use of attenuated CAV vaccines.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Backyard chickens; CAV; Chicken; Chicken infectious anemia virus.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200010

Occurrence of infectious Laryngotracheitis Virus (ILTV) in 2009-2013 in the State of São Paulo - Brazil
Provedor de dados: 89
Autores: Parra,SHS; Nuñez,LFN; Astolfi-Ferreira,CS; Ferreira,JP.
Infectious laryngotracheitis is a very important respiratory disease because it causes significant economic losses in the poultry industry. The target of ILTV infections is the respiratory system, and the main organ in which the virus remains latent is the trigeminal ganglia. However, the virus has demonstrated tropism for other organs as well. The present study was conducted to determine the presence of Infectious Laryngotracheitis Virus (ILTV) in the state of São Paulo. Samples submitted to LABOR- USP during the last four years (2009-2013) analyzed by a nested/PCR technique. Out of the 682 samples from layers tested for LTIV, 12.46 % were positive, and derived from in both traditional (trachea and trigeminal ganglion) and untraditional (cecal tonsils,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious Laryngotracheitis; PCR; Detection; Trachea; Trigeminal.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100117

Occurrence of Salmonella sp in laying hens
Provedor de dados: 89
Autores: Gama,NMSQ; Berchieri Jr,A; Fernandes,SA.
This study was carried out to investigate the presence of Salmonella sp in flocks of white laying hens. In different farms, the transport boxes of twelve flocks were inspected at arrival for the presence of Salmonella. Four positive (A, B, L and M) and one negative (I) flocks were monitored at each four weeks using bacteriological examination of cecal fresh feces up to 52 weeks. Birds were also evaluated at 52 weeks, when 500 eggs were taken randomly, and at 76 weeks, after forced molt. Salmonella enterica serovar Enteritidis and S. enterica rough strain were isolated from the transport boxes of the four positive flocks (flocks A, B, L and M). Salmonella sp was not isolated from the transport boxes or from the feces after 76 weeks-old in flock I....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Feces; Laying hens; Salmonella.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100002

Oil and fat in broiler nutrition
Provedor de dados: 89
Autores: Baião,NC; Lara,LJC.
The terms "fat" and "oil" refer to triglycerides of several profiles of fatty acids. Fatty acids that are not bound to other organic components as glycerol are the so-called free fatty acids. Lipids constitute the main energetic source for animals and they have the highest caloric value among all the nutrients. Linoleic acid is the only fatty acid whose dietetic requirement has been demonstrated. Besides supplying energy, the addition of fat to animal diets improves the absorption of fat-soluble vitamins, decreases pulverulence, increases diet palatability, and the efficiency of utilization of the consumed energy. Furthermore, it reduces the rate of food passage through the gastrointestinal tract, which allows a better absorption of all nutrients present...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler nutrition; Fat; Lipids; Oil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300001

Óleo de Soja, Óleo Ácido de Soja e Sebo Bovino Como Fontes de Gordura em Rações de Frangos de Corte
Provedor de dados: 89
Autores: Gaiotto,JB; Menten,JFM; Racanicci,AMC; Iafigliola,MC.
O experimento avaliou o desempenho de frangos de corte suplementados em 4% na ração com três fontes de gordura: óleo ácido de soja (OAS4) e sebo bovino (SEBO4), óleo de soja (SOJA4) e misturas de 2% entre estas: (OAS2/SEBO2), (OAS2/SOJA2) e (SOJA2/SEBO2). Foram utilizados blocos casualizados, com 6 tratamentos, 6 repetições e 40 aves por parcela. Foram avaliadas as variáveis: consumo de ração (CR), ganho de peso (GP), peso vivo (PV), conversão alimentar (CA), fator de produção (FP) e viabilidade (VB), aos 42 dias de idade. Para análise, foram utilizados contrastes não ortogonais: 1- SOJA4 X (OAS4 + SEBO4 + OAS2/SEBO2); 2- SOJA4 X (OAS2/SOJA2 + SOJA2/SEBO2); 3- OAS2/SOJA2 X SOJA2/SEBO2; 4- OAS4 X OAS2/SOJA2; 5- OAS4 X OAS2/SEBO2. No contraste 1, observou-se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frango de corte; Óleo de soja; Óleo de ácido de soja; Sebo bovino; Gordura abdominal.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300004

On the use of a probiotic (Bacillus subtilis - strain DSM 17299) as growth promoter in broiler diets
Provedor de dados: 89
Autores: Opalinski,M; Maiorka,A; Dahlke,F; Cunha,F; Vargas,FSC; Cardozo,E.
The objective of this experiment was to evaluate the effect of a probiotic (Bacillus subtilis, strain DSM 17299) in broiler diets on feed intake, weight gain, and feed conversion ratio. The experiment included 1,200 male Ross broilers from 1 to 42 days of age. Birds were randomly allocated to 4 treatments, with 10 replicates of 30 birds. The following treatments were applied: T1 - Negative Control (basal diet, with no added growth promoter; T2 - Negative Control + Bacillus subtilis (8 x 10(5) CFUs/g feed); T3 - Negative Control + Bacillus subtilis (3 x 10(5) CFUs/ g de feed) and T4 - Positive Control (avilamycin + anticoccidial from 1 to 35 days of age). At 21, 35, and 42 days of age, there was an increase of antibiotic-free diet intake as compared to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Performance; Probiotic.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200004

On-farm broiler welfare assessment and associated training
Provedor de dados: 89
Autores: Butterworth,A.
Around the world, people who care for animals as stock keepers, stockmen, farmers, producers are placed in a position where they can greatly influence the quality of life of the animals they manage. This is particularly true in broiler chickens, where large numbers of animals can be cared for by comparatively small numbers of people. There is an international progression to start to assess poultry welfare on farm by looking at the animals themselves using (Animal Based Measures ABMs) rather than by looking exclusively at the resources provided (space, light heat, litter material - Resource Based Measures RBM's). In general, the areas being assessed are: Are the animals properly fed and supplied with water? Are the animals properly housed? Are the animals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry assessment; Farm assessment; Welfare Quality protocol; Animal based measures; Outcome based measures; Resource based measures; Welfare score; Aggregation; Management support; Principles; Criteria.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200001

Optimal Available Phosphorus Levels in Diets Containing Different Dicalcium Phosphate Particle Sizes for Japanese Quails
Provedor de dados: 89
Autores: Nascimento,MQ; Vargas Junior,JG; Pinto,CEL; Demuner,LF; Petrucci,FB; Vieites,FM.
ABSTRACT This experiment was conducted to investigate the effects available phosphorus levels and dicalcium phosphate particle size on the live performance, and egg parameters and bone parameters of Japanese quails in lay. The experimental diets were based on corn and soybean meal and formulated to contain 2900 kcal metabolizable energy (ME)kg-1, 200 g kg-1 crude protein (CP) and 30.5 g kg-1 calcium (Ca). Feeds were supplied ad libitum. Laying Japanese quails (n=720, 20-wk-old)were distributed in a completely randomized design in a 5 x 2 factorial arrangement, with five levels of available phosphorus (avP; 1.0, 2.0, 3.0, 4.0, 5.0 g kg-1) and two dicalcium phosphate particle sizes (fine orcoarse), totaling ten treatments with eight replicates of nine birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Macrominerals; Mineral nutrition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400301

Optimal Standardized Ileal Digestible Arginine to Lysine Ratio for Japanese Quails in the Egg-Laying Phase
Provedor de dados: 89
Autores: Tuesta,GMR; Viana,GS; Barreto,SLT; Muniz,JCL; Reis,RS; Mencalha,R; Hannas,MI.
ABSTRACT This study was conducted to determine the optimal standardized ileal digestible arginine to lysine (SID Arg:Lys) ratio for Japanese quails in the egg-laying phase. A total of two hundred forty-five 35-week-old Japanese quails (181 ± 1.30 g initial body weight) were randomly assigned to five treatment groups with seven replicates of seven quails. Graded levels of L-Arginine were added to a basal diet in order to produce five SID Arg:Lys ratios (101, 106, 111, 116 and 121%). Collected data were analyzed as one-way ANOVA and optimal ratio was estimated using polynomial regression model (linear and quadratic) based on performance traits. Statistical differences were considered for p&lt;0.05. Graded SID Arg:Lys ratios did not affect performance traits...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix japonica; Digestible amino acids; Ideal protein.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200351

Optimization Algorithm Applied to Environmental Control in Broiler Houses
Provedor de dados: 89
Autores: Benvenga,MAC; Nääs,IA; Lima,NDS; Carvalho-Curi,TMR; Reis,JGM.
ABSTRACT The present study aimed to apply the Simulated Annealing (SA) optimization algorithm to find the ideal control of broiler housing rearing environment at 21, 28, 35, and 42 days of growth. Data from four types of houses using environmental control and similar flock density were recorded weekly in the morning and afternoon, during two seasons (summer and winter). The variables related to environmental and air quality data (temperature, relative humidity, air velocity, ammonia, and carbon dioxide concentrations) were registered and organized into the database to provide a descriptive analysis. The ideal rearing conditions were established as a goal, and we used the Simulated Annealing optimization algorithm to process the data. Such an approach may...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler rearing; Broiler production; Heat stress mitigation; Simulated Annealing.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300315

Optimum Dietary Standardized Ileal Digestible Isoleucine to Lysine Ratio for Meat-Type Quails in the Growing-Finishing Phase
Provedor de dados: 89
Autores: Viana,GS; Barreto,SLT; Muniz,JCL; Arnaut,PR; Santana,LC; Alves,WJ; Hannas,MI; Tizziani,T.
ABSTRACT This study was conducted to determine the optimum standardized ileal digestible isoleucine to lysine (SID Ile:Lys) ratio for meat-type quails from 15 to 35 d of age. Three hundred fifty not-sexed meat-type quails (Coturnix coturnix coturnix) were randomly assigned into five treatments, with seven replicates of 10 quails each. An isoleucine-deficient corn-soybean meal-based diet was formulated and graded supplemented with L-isoleucine (99%) to obtain diets containing SID Ile:Lys ratios of 55,61, 67, 73, and 79%. Data were analyzed as one-way ANOVA and optimum SID Ile:Lys was estimated by polynomial (linear and quadratic) regression. Statistical differences were considered when p&lt;0.05. Quail performance from 15 and 21 d and 15 and 28 d of age was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Branched-chain amino acids; Coturnix coturnix coturnix; Ideal protein.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300417

Optimum Digestible Valine to Lysine Ratio for Meat-Type Quails from 15 to 35 Days of Age
Provedor de dados: 89
Autores: Alves,WJ; Viana,GS; Barreto,SLT; Muniz,JCL; Hannas,MI; Silva,AD; Arnaut,PR; Barros,VRMS.
ABSTRACT This study was conducted to estimate the dig. valine to lysine (Val:Lys) ideal ratio for meat-type quails from 15 to 35 d of age. A total of 385, 15-day-old not sexed quails, were randomly assigned to five treatments, each one seven times replicated with eleven quails per experimental unit. Experimental treatments consisted of five dig. Val:Lys ratios (0.65; 0.70; 0.75; 0.80 and 0.85). Ideal dig. Val:Lys ratio was estimated using polynomial regression and linear broken-line regression model. Significant effect was considered when p≤0.05. Feed conversion ratio was not affected by dig. Val:Lys ratios in any of the assessed phases. From 15 to 21 d of age Val:Lys ratios increased linearly feed intake, weight gain and body weight. From 15 to 28 d of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Branched-chain amino acids; Coturnix coturnix coturnix; Digestible amino acids.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200185

Options, challenges and potentials of poultry meat: an empirical investigation on european consumers
Provedor de dados: 89
Autores: Vukasović,T.
Agricultural market developments have attracted considerable attention recently, due to increasing consumer food prices and sharp short term price fluctuations of agricultural commodity prices. This medium term outlook provides a projection for major EU agricultural commodity markets and agricultural income until the year 2022, based on a set of coherent assumptions. Under these assumptions, agricultural commodity prices are expected to stay firm over the medium term, supported by factors such as the growth in global food demand, the development of the biofuel sector and a prolongation of the long-term decline in food crop productivity growth. EU commodity markets are projected to remain balanced on average over the outlook period, without the need for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry meat; Consumer behaviour; EU.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400014

Organic acids and/or compound with defined microorganisms to control Salmonella enterica serovar Enteritidis experimental infection in chickens
Provedor de dados: 89
Autores: Sterzo,EV; Paiva,JB; Mesquita,AL; Freitas Neto,OC; Berchieri Jr,A.
The association of human foodborne salmonellosis with poultry products enhanced the efforts to control Salmonella Enteritidis in poultry farms. Dietary organic acid supplementation is one of the measures currently used to reduce the presence of undesirable microorganisms. Another method to control enteric Salmonella in poultry is competitive exclusion using defined or undefined microorganisms products. Organic acids and microbiological methods to accelerate the development of the intestinal microbiota can be used individually or in combination. The present study evaluated the effect of dietary supplementation of an acidifier and of a defined multi-strain microbial mixture (Biomin® PoultryStar) via drinking water in the control of the intestinal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competitive exclusion; Organic acids; Probiotic; Salmonella Enteritidis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100010

Organic Egg Production, Egg Quality, Calcium Utilization, and Digestibility in Laying Hens Fed with Mushroom (Flammulina velutipes) Stem Waste
Provedor de dados: 89
Autores: Mahfuz,S; Song,H; Wei,J; Chen,M; Zhen,D; Nahar,J; Liu,Z.
ABSTRACT The possibility of using mushroom (Flammulina velutipes) stem waste (FVW) in layer diets was explored in this study. A total of 180, 40-week-old ISA Brown laying hens were randomly assigned to 5 groups, with 6 replications of 6 birds for each group. Layers were fed a standard basal diet as control; antibiotic (0.05% flavomycin); 2% FVW; 4%FVW; and 6% FVW. No significant differences (p&gt;0.05) were observed on hen daily egg production, egg weight, egg mass, unmarketable eggs, feed intake, feed conversion ratio, and live weight among experimental groups. Haugh unit was found higher (p&lt;0.05) in FVW fed groups than in antibiotic fed groups. Shape index, shell weight, shell thickness, yolk weight, yolk index, yolk weight and albumen weight were not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apparent nutrient retention; Calcium utilization; Egg quality; Laying performance; Mushroom waste.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400717

Ornithine decarboxylase expression in the small intestine of broilers submitted to feed restriction and glutamine supplementation
Provedor de dados: 89
Autores: Fischer da Silva,AV; Borges,SA; Maiorka,A; Givisiez,PEN; Rocha,C; Macari,M.
Six hundred and forty one-day-old Cobb male broilers were used to evaluate ornithine decarboxylase (ODC) expression in the mucosa of the small intestine. Birds were submitted to early feed restriction from 7 to 14 days of age. The provided feed was supplemented with glutamine. A completely randomized design with a 2 x 2 factorial arrangement was used (with or without glutamine, with or without feed restriction). Restricted-fed birds were fed at 30% the amount of the ad libitum fed group from 7 to 14 days of age. Glutamine was added at the level of 1% in the diet supplied from 1 to 28 days of age. Protein concentration in the small intestine mucosa was determined, and ODC expression at 7, 14, 21, and 28 days of age was evaluated by dot blotting. ODC was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed nutrition; Glutamine; Intestinal mucosa; Mucosa growth; Ornitine decarboxylase.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200006

Ostrich (Struthio camellus) carcass yield and meat quality parameters
Provedor de dados: 89
Autores: Balog,A; Almeida Paz,ICL.
This article aimed at compiling recent studies on the main factors that influence ostrich meat quality and carcass yield. Few articles investigated the effect of subspecies, which generally are not even mentioned. There are important dietary effects, particularly those caused by dietary protein to energy ratio. Rigor mortis follow-up studies showed that there are no losses in meat quality when carcasses are hot-deboned. Age at slaughter influences some meat quality traits, such as tenderness and lipid content. Few effects of gender have been observed, and at the same age at slaughter, both male and female present the same meat quality traits.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yield; Meat quality; Ostrich production; Tenderness.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400002

Ostrich (Strutio camelus) meat protein quality and digestibility
Provedor de dados: 89
Autores: Reis,LS; Oliveira,TC.
The purpose of the study was to evaluate ostrich meat protein quality, as its consumption has significantly increased in the last few years in Brazil. Male Wistar rats were distributed in groupe of six elements. The standard group received a casein-based diet, the control group received a protein-free diet, and the experimental group received ostrich meat diet as protein source. The evaluated biological parameters were protein efficiency ratio (PER), net protein ratio (NPR), net protein utilization (NPU), and true digestibility (TD). There were differences (p&lt;0.05) among treatment groups for all evaluated biological parameters. Mean true digestibility values were 92.12% and 75.77% for casein and ostrich meat, respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Casein; Digestibility; Ostrich meat; Protein quality.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300009

Ovarian Morphology and Egg Quality Traits of Egyptian Selected Strain for Egg Production Compared with Commercial Laying Strains
Provedor de dados: 89
Autores: Nassar,FS; El-Komy,EM; Abdou,AM.
ABSTRACT An experiment was conducted to evaluate the effect of selection for egg production performance of Cairo L-2 strain, as a local layer strain, after five generations of selection on productivity, ovarian morphology and some egg quality traits versus commercial Lohmann Brown-Lite (LBL) strain. The performance in the 5th generation was evaluated in Cairo L-2 and LBL strains for live body weight at sexual maturity (BWSM), age at sexual maturity (ASM), first egg weight (FEW), ovarian morphology, ovarian follicles number, ovarian weights and diameter, oviduct weight, liver weight, and stroma weight and their percentages to live body weight at sexual maturity for Cairo L-2 and LBL strains. Egg traits at 36 weeks of age including: egg number (EN), egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Egg quality; Ovarian morphology; Selection; Sexual maturity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400683

Overview on the performance of Brazilian broilers (1990 to 2009)
Provedor de dados: 89
Autores: Patricio,IS; Mendes,AA; Ramos,AA; Pereira,DF.
This article describes the genetic evolution of commercial broilers between 1990 and 2009, considering live performance, in particular, in terms of weight gain and feed conversion ratio. In order to determine if the assumption that the relationship between body weight gain and feed conversion ratio is increasing and positive, information on all broiler strains reared in Brazil were collected from several companies present in five Brazilian regions. This survey aimed at evaluating broiler live performance as a function of genetic improvement with time. Broiler performance improved, as shown by the statistical differences obtained for the following parameters: livability, live weight, daily weight gain, feed conversion ratio, and production efficiency index...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry production; Production efficiency; Genetics; Livability.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000400001

Oxidative Stress of in-Ovo Ochratoxin A Administered during Chick Embryonic Development
Provedor de dados: 89
Autores: Elsayed,MAE; Mohamed,NE; Hatab,MH; Elaroussi,MA.
ABSTRACT The present work was carried out to study the effect of in-ovo injection of ochratoxin A (OTA) as an oxidative stress and its consequences on hepatic and kidney functions, thyroid activity, and histological examination of brain and liver in chicken embryos and subsequently in the hatching chicks. On the 10th day of incubation, one hundred and sixty-two fertile eggs were randomly divided into two equal treatments. Control treatment, (injected by 50 µl sodium carbonate) and OTA treatment (injected by 12.5 ng OTA dissolved in 50 µl sodium carbonate). OTA treatement group significantly reduced glutathione (GSH) and significantly increased thiobarbituric acid reactive substances production (TBARS) in embryonic and hatched chicks regarding livers,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken Embryo; Ochratoxin A; Oxidative Stress; Liver and Kidney Functions; Total Thyroxine.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100313

Pathological Aspects of a Subclinical Marek's Disease Case in Free-Range Chickens
Provedor de dados: 89
Autores: Abreu,DLC; Santos,FF; José,DS; Tortelly,R; Nascimento,ER; Pereira,VLA.
Abstract The present report aims at describing the occurrence of Marek's Disease (MD) in a free range poultry farm based on macroscopic and microscopic lesions. For this purpose, seven free-range chickens were evaluated by gross and microscopic examination. Tumor lesions were observed in the liver and ovary, in addition of enlarged kidney and spleen, skin thickening and whitish lesions in streak form in the breast muscle. Fragments of the affected organs were collected and placed in 10% formalin for processing by the usual histopathology techniques, and stained with hematoxylin-eosin. Under microscopic evaluation, we observed pleomorphic populations of neoplastic lymphoreticular cells with pyknotic nuclei in the same organs, all compatible with MD. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marek's Disease; Histopathology; Free-range chickens.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100197

Pathological, immunohistochemical, and molecular findings in commercial laying hens and in backyard chickens naturally infected with the infectious laryngotracheitis virus
Provedor de dados: 89
Autores: Preis,IS; Fiúza,ATL; Silva,CC; Braga,JFV; Couto,RM; Martins,NR da S; Ecco,R.
Seventy-eight chickens from a very high poultry density (approximately eight million) region and twelve backyard chickens from neighboring areas were analyzed by histopathology and additional techniques for the presence of the infectious laryngotracheitis virus. The virus distribution was determined in different tissues using immunohistochemistry (IHC) and polymerase chain reaction (PCR). The disease was histopathologically diagnosed in 41.0% (32/78) of the commercial layers. Lesions were mainly characterized by syncytial cells with eosinophilic intranuclear inclusion body formed from the hyperplastic epithelium of the upper respiratory tract, primary and secondary bronchi, and conjunctiva. IHC showed 70% (21/30) positive signal in the larynx/trachea and,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian infectious laryngotracheitis; Conventional PCR; Histopathology; Immunohistochemistry; Laying hen.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400004

Patogenicidade In Vivo e In Vitro de Amostras de Escherichia Coli de Origem Aviária
Provedor de dados: 89
Autores: Assis,ACB; Santos,BM.
O objetivo desse trabalho consistiu em determinar a patogenicidade in vivo e in vitro de 25 amostras de Escherichia coli obtidas de aves com Síndrome da Cabeça Inchada (SCI). A patogenicidade in vivo foi determinada pela inoculação em pintos SPF de um dia de idade, utilizando-se quatro vias de inoculação: intracardíaca, saco aéreo, oral e traqueal. As aves foram avaliadas quanto à mortalidade a cada 12 horas, por um período de sete dias. Os resultados desse estudo demonstraram que as 25 amostras de E. coli, isoladas de aves com SCI, causaram mortalidade mais elevada em pintos de um dia de idade quando foram inoculadas pelas vias intracardíaca (73,6%) e saco aéreo (68%). As menores taxas de mortalidade em pintos de um dia de idade foram obtidas pelas vias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Escherichia coli; Colibacilose; Pintos; Síndrome da cabeça inchada; Verotoxina.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200007

Pearl millet utilization in ccommercial laying hen diets formulated on a total or digestible amino acid basis
Provedor de dados: 89
Autores: Filardi,RS; Junqueira,OM; Casartelli,EM; Laurentiz,AC; Duarte,KF; Assuena,V.
An experiment was carried out to evaluate the effect of replacing corn with pearl millet in commercial layer diets, formulated according to the minimal requirements for total and digestible amino acids. Two hundred and forty Lohmann LSL laying hens with 25 weeks of age were distributed in a completely randomized experimental design according to a 2 x 5 factorial arrangement with 3 replicates of 8 birds. Feed was formulated on two amino acid basis (total or digestible) according to Rostagno et al. (2000) and there were five pearl millet inclusion levels (0%, 25%, 50%, 75%, and 100%). Performance and egg quality were evaluated during five periods of 21 days.At the end of each period, feed intake, egg production, egg weight and feed conversion were evaluated....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestible amino acids; Egg quality; Laying hens; Pearl millet; Performance; Total amino acids.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200006

Pendulous Crop in Broilers
Provedor de dados: 89
Autores: Ebling,PD; Pontalti,GC; Villanueva,AP; Ribeiro,AML.
ABSTRACTPendulous crop is a physiological disorder, which etiology is still unknown and it is characterized by abnormal dilation of the crop of poultry. This article aims at reporting a case of high incidence of pendulous crop in male and female broilers Cobb 500, as well as to discuss its possible causes and consequences. In an experiment with broilers performed at the experimental facilities of Laboratório de Ensino Zootécnico of UFRGS, a high incidence (9.5%) of pendulous crop was observed. Genetic predisposition is the most frequently documented and accepted cause of that condition. Despite presenting the same live weight as normal broilers, birds with pendulous crop had lower carcass weight due to dehydration and malnourishment, and should be culled...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolic disorders; Genetic improvement; Feed intake voracity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300395

Penetration time of Salmonella Heidelberg through shells of white and brown commercial eggs
Provedor de dados: 89
Autores: Raghiante,F; Rocha,TS; Rossi,DA; Silva,PL.
This study aimed at determining the minimum time required for the penetration of Salmonella Heidelberg inside the eggs after contact with contaminated material. Recently-collected brown and white eggs from laying hens between 45-50 weeks of age, reared in a commercial poultry house, were artificially contaminated by contact with wood shavings moistened with liquid inoculum of Salmonella Heidelberg in stationary-growth phase (10³-10(4) CFU g-1). According to type (white or brown), eggs were distributed into three different groups, with four replicates each: negative control group (no artificial contamination), positive control group (analyzed externally immediately after contamination and internally after the maximum storage period of the test group) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Penetration time; Salmonella Heidelberg.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400009

Performance, abdominal fat deposition and bone characteristics of broilers fed diets containing different lipid sources
Provedor de dados: 89
Autores: Potença,A; Murakami,AE; Fernandes,JIM; Matsushita,M; Nakagawa,EL.
Two experiments were carried out to evaluate the performance, abdominal fat yield, and bone parameters of broiler chickens fed diets containing different lipid feedstuffs as energy source. During the starter phase (1 to 21 days) of Experiment 1, a completely randomized design with four treatments with eight replicates of 49 birds each one was applied. Broilers were fed starter diets formulated with different lipid sources: soybean oil (SO), cottonseed oil (CO), poultry offal oil (PO), and beef tallow (BT). During the finisher phase (21 to 42 days) of Experiment 1, each initial treatment was divided in two experimental groups: one fed the same fat ingredient as the previous period, and the other fed SO as energy source. Thus, during this period, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abdominal fat deposition; Bone parameters; Lipid profile; Performance.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400008

Performance and carcass characteristics of broiler chickens with different growth potential and submitted to heat stress
Provedor de dados: 89
Autores: Rosa,PS; Faria Filho,DE; Dahlke,F; Vieira,BS; Macari,M; Furlan,RL.
In order to evaluate the effects of broiler genotype and of heat exposure on performance, carcass characteristics, and protein and fat accretion, six hundred one-day-old male broilers were randomly assigned in a 2 x 3 factorial arrangement, according to the following factors: genetic group (selected and non-selected broilers) and pair-feeding scheme (Ad32 - reared under heat stress and fed ad libitum; Ad23 - reared at thermoneutrality and fed ad libitum; Pf23 - reared at thermoneutrality and pair fed with Ad32), with a total of six treatments with four replicates of 25 birds each. Independent of pair-feeding scheme, selected broilers showed better feed conversion, higher carcass yield, and lower abdominal fat deposition rate. However, as compared to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric coefficient; Carcass yield; Genetic improvement; Heat stress.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300007

Performance and carcass characteristics of free-range broiler chickens fed diets containing alternative feedstuffs
Provedor de dados: 89
Autores: Faria,PB; Vieira,JO; Silva,JN; Rodrigues,AQ; Souza,XR; Santos,FR; Pereira,AA.
The present study was carried out to evaluate the effects of alternative feedstuffs as partial substitutes of corn and soybean in free-range broiler diets on performance, carcass yield and technical-economic viability. A total of 400 Pescoço Pelado broilers were distributed in a completely randomized experimental design (CRD), with four treatments (treatment 1:Control; treatment 2: 10% rice bran inclusion; treatment 3: 10% ground cassava leaves; and treatment 4: 10% ground lead tree hay) with four replicates per treatment. Each replicate consisted of a group of 25 birds per paddock, separated per sex. Initial weight (IW), final weight (FW), body weight (BW), daily weight gain (DWG), feed intake (FI) and feed conversion ratio (FCR) were evaluated. Carcass,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Free-range chickens; Performance.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300009

Performance and carcass quality of broilers supplemented with antibiotics or probiotics
Provedor de dados: 89
Autores: Contreras-Castillo,CJ; Brossi,C; Previero,TC; Demattê,LC.
The objective of this study was to evaluate the effects of different additives on broiler performance and meat quality. A total of 1620 one-day-old male Cobb broilers were distributed by a completely randomized experimental design into 5 treatments: positive control - zinc bacitracin (PC); negative control - without additives (NC); probiotic 1 - 10.000 g/ton (PR-I); probiotic 2 - 500 g/ton (PR-II); and probiotic 3 - 50 g/ton (PR-III). The PC treatment promoted better weight gain (WG) than PR-II (1-28 days) and PR-III (1-14; 1-28 days), better feed conversion (1-40 days period), and the highest WG among all treatments (p&lt;0.05). The performance of broilers fed probiotics was not different than those in the negative control group in any rearing phase, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Meat color; Meat water holding capacity; Polyprobiotics; Zinc bacitracin.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400006

Performance and Carcass Yield of Broilers Fed Crude Glycerin at Differing Inclusion Levels
Provedor de dados: 89
Autores: Broch,J; Henz,J; Nunes,R; Eyng,C; Savaris,V.
ABSTRACT This experiment was conducted to evaluate the effect of crude glycerin at differing inclusion levels on performance and carcass characteristics of broilers and litter moisture. 960 broilers of 21-42 days of age were used in a completely randomized design with six crude glycerin inclusion levels (0, 3, 6, 9, 12, 15%), with eight replicates containing 20 broiler chickens per experimental unit. There was a quadratic effect (p&lt;0.05) for weight gain, feed intake and feed:gain ratio from 21 to 42 days of age. Higher levels of crude glycerin in diets increased (40.24%, p&lt;0.05) the litter moisture and reduced (6.04%, p&lt;0.05) the viability of of the birds. There were no effects (p&gt;0.05) on carcass yield, breast, or liver percentages. However,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: By-products; Fat deposition; Litter quality; Protein deposition.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400797

Performance and carcass yield of broilers fed with different digestible amino acid profiles recommended by nutrients requirements tables
Provedor de dados: 89
Autores: Pedroso,AC; Franco,SG; Flemming,JS; Borges,SA; Sillus,PP.
An experiment was conducted to evaluate the effect of different digestible amino acid profiles on the performance of broilers in two phases: from 1 to 21 days and from 22 to 42 days of age. At the end of the experiment, carcass yield and cut percentages were evaluated. Nine hundred and sixty AgRoss birds were distributed in a randomized block design with four treatments (four digestible amino acid profiles): Rostagno et al. (2000), Baker &amp;amp; Han (1994b), Degussa (1997) and those recommended by AgRoss (2000), with six repetitions and 40 birds per repetition (20 males and 20 females). The results showed that the four diets were able to provide the requirements of the birds, since no significant differences were seen among the treatments on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carcass yield; Digestible aminoacids; Ideal protein.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100004

Performance and carcass yield of broilers supplemented with plant extract during the finisher phase
Provedor de dados: 89
Autores: Carlos,TCF; Barbosa,LCGS; Polycarpo,GV; Afonso,ER; Utimi,NBP; Bortolato,C; Araújo,CSS; Araújo,LF.
In this study, 600 one-day-old male Cobb 500 broilers were distributed according a completely randomized experimental design into the different dietary treatments. Broilers were fed the following dietary treatments: positive control diet (PC), containing 54 ppm zinc bacitracin; negative control diet (NC), with no inclusion of performance enhancers and 3% reduction in metabolizable energy, crude protein, and amino acid levels; PC up to 33 days and then NC, with the dietary addition of 75, 150, or 225 ppm plant extracts, until day 42 days of age. Broiler performance and carcass yield were evaluated. Data were analyzed using the Statistical Analysis System package (SAS Institute Inc., 2008), and submitted to polynomial regression analysis using the GLM...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsaicin; Carvacrol; Cinnamaldehyde; Poultry nutrition; Essential oils.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400016

Performance and Cecal Bacteria Counts of Broilers Fed Low Protein Diets With and Without a Combination of Probiotic and Prebiotic
Provedor de dados: 89
Autores: Ravangard,AH; Houshmand,M; Khajavi,M; Naghiha,R.
ABSTRACT A total of 360 one-day-old Cobb 500 chicks were randomly distributed in a completely randomized design according to a 3×2 factorial arrangement, consisting of three levels of dietary crude protein (100, 90 and 85% of NRCrecommended levels) and a feed additive (with or without feed additive). A blend of a commercial probiotic and a prebiotic were used as feed additives. Each treatment had four replicates of 15 birds each. Prebiotic and probiotic were added to the starter (days 1 to 21) and finisher (days 22 to 42) diets according to the manufacturer´s recommendations. The findings indicated that significant differences were not observed between 100 and 90% NRC for broiler performance (body weight, body weight gain, feed intake and feed conversion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Low protein diet; Prebiotic; Probiotic.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500075

Performance and color of broilers fed diets containing Rhodocyclus gelatinosus biomass
Provedor de dados: 89
Autores: Ponsano,EHG; Pinto,MF; Garcia-Neto,M; Lacava,PM.
The objective of this study was to evaluate the effect of different supplementation levels of Rhodocyclus gelatinosus biomass on the performance and pigmentation of broilers. Cobb broilers were raised in pens and were fed a sorghum-based diet until 35 days of age. At the 36th day of age, ninety-six birds were randomly distributed to four treatments consisting of experimental diets with different supplementation levels of Rhodocyclus gelatinosus biomass (0, 75, 150 and 300 ppm) added to the finisher basal diet, which were given for seven days. A completely randomized experimental design was used, with four treatments, four replicates and six broilers per parcel. Birds and diets were weighed at the 36th and at the 42nd day of age for performance analysis....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomass; Broilers; Color; Performance; Rhodocyclus gelatinosus.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400008

Performance And Economic Viability Of Broiler Chickens Fed With Probiotic And Organic Acids In An Attempt To Replace Growth-Promoting Antibiotics
Provedor de dados: 89
Autores: Araujo,RGAC; Polycarpo,GV; Barbieri,A; Silva,KM; Ventura,G; Polycarpo,VCC.
ABSTRACT The aim of this study was to evaluate diets supplemented with probiotic (Bacillus amyloliquefaciens) and organic acids (lactic, acetic and butyric acid) in attempt to replace the antibiotics and anticoccidial (avilamycin + sodium monensin) growth promoters on performance and economic viability of broilers challenged by Eimeria acervulina, E. maxima and E. tenella. A total of 900 male Cobb® chickens, with a mean weight of 39.90g, were distributed in a completely randomized design in a 2 × 2 + 1 factorial arrangement: supplementation or not of probiotic and organic acids and a treatment with inclusion of antibiotics, comprising five treatments with six replicates. For the studied performance variables, there was no effect of the isolated additives...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetic acid; Avilamycin; Butyric acid; Lactic acid; Monensin sodium.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200304

Performance and Egg Quality of Commercial Laying Hens Fed Diets Formulated Using Non-Linear Programming
Provedor de dados: 89
Autores: Almeida,TW; Silva,AL; Saccomani,AP; Muñoz,JA; Silva,RT; Franca,NV; Faria,DE; Faria Filho,DE.
ABSTRACT Feed formulation using linear programming consists of determining the mixture of feedstuffs required to meet pre-established animal nutritional requirements at the lowest cost. On the other hand, with the use of non-linear programming, it is possible to define nutritional requirements at the time of formulation, aiming at maximum profit. The objective of the present study was to compare feeds formulated using linear and non-linear programming in terms of live performance and internal and external egg quality of commercial laying hens. A total of 288 Hisex® White laying hens, 1.540 ± 0.128 g body weight, were evaluated from 33 to 45 weeks of age. Hens were distributed in a completely randomized block design, including six treatments with six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diminishing returns; Linear programming; Mathematical modeling; Meta-analysis; Profit.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300313

Performance and egg quality of Japanese quails submitted to cyclic heat stress
Provedor de dados: 89
Autores: Vercese,F; Garcia,EA; Sartori,JR; Silva,A de P; Faitarone,ABG; Berto,DA; Molino,A de B; Pelícia,K.
Aiming at evaluating the influence of cyclic temperatures on the performance and egg quality of Japanese quails an experiment was carried out with 480 birds after egg production peak. Birds were housed in a bioclimatic chamber with automatic temperature control that contained two rooms, one maintained at thermoneutral temperature (21 ºC) and the other adjusted for the tested cyclic temperatures (24, 27, 30, 33 and 36 ºC at a time). Each room had a battery of five floors and ten cages, with a capacity of 24 birds per cage, totaling 240 birds per battery. Birds were fed iso-nutritious and iso-caloric diets. Data obtained under the tested cyclic temperatures were compared with those obtained under thermoneutral temperature. At the end of each experimental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix japonica; Egg production; Environmental temperature; Heat stress; Post-peak egg production.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100007

Performance and egg quality of laying hens fed diets containing aflatoxin, fumonisin and adsorbent
Provedor de dados: 89
Autores: Siloto,EV; Sartori,DRS; Oliveira,EFA; Sartori,JR; Fascina,VB; Berto,DA.
The effects of aflatoxin and fumonisin and their combination on egg production and quality, as well as the efficacy of a mycotoxin adsorbent in reducing or eliminating these effects in commercial layers. A number of 168 layers with initial age of 37 weeks were submitted to an experimental period of 56 days. A completely randomized experimental design in a 3x2+1 factorial arrangement was applied (3 treatments with mycotoxins: aflatoxin (AF), fumonisin (FU), or aflatoxin + fumonisin (AF+FU); 2 treatments with or without adsorbent; and a control group that was fed no mycotoxins, nor adsorbent), totaling 7 treatments with 6 replicated of 4 birds/cage. The dietary inclusion levels were 1ppm AF, 25ppm FU, and 2 kg adsorbent/ton feed. Birds fed AF presented the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adsorbent; Aflatoxin; Fumonisin; Layers; Performance.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100004

Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
Provedor de dados: 89
Autores: Souza,KMR de; Faria,DE de; Araújo,RB; Sakamoto,MI; Santos,TT dos; Kikuchi,C de G; Nakashima,DT; Caetano,VC.
The objective of this study was to evaluate the effect of dietary energy level reduction and xylanase inclusion on the performance and on intestinal mucosa morphometry of two- to six-week-old laying hens. In total, 400 Hy-line W36 laying hens were distributed according to a completely randomized design in 2 x 2 factorial arrangement (energy level x inclusion of xylanase), totaling four treatments with 10 replicates of 10 birds per experimental unit. The following treatments were evaluated: positive control (balanced diet); positive control + xylanase; negative control (diet with of 100 kcal ME reduction /kg); negative control + xylanase. Body weight, weight gain, feed conversion ratio, uniformity and livability were not influenced by diets with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Crypt depth; Energy reduction; Flock uniformity; Villus height.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300003

PERFORMANCE AND NUTRIENT METABOLIZABILITY IN BROILERS FED DIETS CONTAINING CORN CONTAMINATED WITH FUMONISIN B1 AND ESTERIFIED GLUCOMANNAN
Provedor de dados: 89
Autores: Oliveira,EM; Tanure,CBGS; Castejon,FV; Castro,RMAD; Rocha,FRT; Carvalho,FB; Andrade,MA; Stringhini,JH.
ABSTRACTAn experiment was conducted to evaluate the performance and nutrient metabolizability of broilers fed diets containing fumonisin B1 (FB1) and an esterified glucomannan (EGM). In total, 420 male broilers were distributed according to a 3 x 2 + 1 factorial arrangement, corresponding to three FB1 exposure times (seven, 21, or 35 days), two dietary glucomannan addition levels (0 or 0.1% EGM), and control diet, totaling seven treatments. The following diets were fed: 1) Control diet, 2) pre-starter diet containing FB1, 3) pre-starter diet containing FB1 and 0.1% EGM, 4) starter diet containing FB1, 5) starter diet containing FB1 and 0.1% EGM, 6) grower diet containing FB1, and 7) grower diet containing FB1 and 0.1% EGM. On d 7, broilers fed FB1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adsorbent; Fungi; Grains; Metabolism; Nutrition; Poultry.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300313

Performance and organ morphology of broilers fed microbial or antimicrobial additives and raised in batteries or floor pens
Provedor de dados: 89
Autores: Pedroso,AA; Menten,JFM; Racanicci,AMC; Longo,FA; Sorbara,JOB; Gaiotto,JB.
This study was conducted to determine the effect of microbial or antimicrobial additives on the performance and organ morphology of broilers raised in batteries or in floor pens. The effect of microbial additives on the presence of oocysts in the litter was also studied. Experiments 1 and 2 consisted of four treatments (non-supplemented control diet or diet supplemented with avilamycin, bacitracin methylene disalicylate or enramycin) and six repetitions in a randomized block design. In Experiment 1, 288 day-old chicks were housed in heated batteries in a environmentally controlled room, 12 chicks per cage; in Experiment 2, 1,200 day-old chicks were housed in a curtain-sided experimental house, with concrete floor and rice hulls as litter material, 50...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotic; Broilers; Growth promoters; Organ morphology; Performance; Probiotic.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200004

Performance and Serum Biochemical Profile of Broiler Chickens Supplemented with Piper Cubeba Ethanolic Extract
Provedor de dados: 89
Autores: Rubio,MS; Laurentiz,AC; Sobrane Fº,ST; Mello,ES; Filardi,RS; Silva,MLA; Laurentiz,RS.
ABSTRACT Piper cubeba is an Asian pepper used in popular medicine for its known antimicrobial, antiparasitic, and anti-inflammatory actions. The study evaluated the effects of dietary inclusion of Piper cubeba ethanolic extract (PE) as a replacement for anantibiotic growth promoter (AGP) on the performance and biochemical serum profile of 1- to 21-d-old broilers (Cobb®). Two hundred one-d-old broilers were housed in experimental battery cages and distributed in a completely randomized design. The following treatments were applied: negative control (NC) - basal diet; positive control (PC) - basal diet with addition of AGP; and the basal diet with inclusion of 0.17%, 0.34%, and 0.52% of PE (NCE1, NCE2, and NCE3, respectively). Growth performance, biochemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Antibiotic growth promoters; Biochemical serum profile; Pepper.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100310

Performance and some intestinal functions of broilers fed diets with different inclusion levels of sunflower meal and supplemented or not with enzymes
Provedor de dados: 89
Autores: Horvatovic,MP; Glamocic,D; Zikic,D; Hadnadjev,TD.
Enzyme supplementation of diets enhances broiler performance by improving some of the basic production parameters such as average feed intake, feed conversion ratio, or average weight gain. The enzyme NSPase is commonly used in broiler diets containing high levels of viscous cereals such as barley, oat, wheat, or sorghum. The use of NSPase in diets with different levels of sunflower meal has been not been extensively explored. The experiment was carried out to evaluate the effects of the inclusion of sunflower meal levels in grower and finisher broiler diets supplemented or not with enzymes (cellulase, β-glucanase, and xylanase) on broiler performance, intestinal function, and carcass traits. A completely randomized experimental design, with 3*2 factorial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass characteristics; Enzyme activity; Performance; Viscosity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100025

Performance, Body Temperature and Egg Quality of Laying Hens Fed Vitamins D and C Under Three Environmental Temperatures
Provedor de dados: 89
Autores: Faria,DE; Junqueira,OM; Souza,PA; Titto,EAL.
Three experiments were conducted in a climatic chamber to determine the effects of vitamins D3 and C supplementation on performance, body temperature, and egg quality under thermoneutral temperature (24.8º to 27.0º C), a cyclic heat stress (26.2º C for 16 h and 32.1º C for 8 h) and a constant heat stress (30.0º to 32.0º C) for three weeks in each temperature. One hundred forty-four White Leghorn hens aged 31 weeks were used in a completely randomized design with a factorial arrangement of 3 x 3: vitamin D3 (2,500, 3,000, and 3,500 IU/kg) and vitamin C (0, 200, and 400 ppm), with a total of nine treatments with four replicates of four hens each. Parameters measured included feed intake (FI), feed:gain (FG), egg production (EP), egg weight (EW), egg mass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascorbic acid; Cholecalciferol; Egg; Heat stress; Laying hens.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100005

Performance, carcass traits, and body composition of broilers fed different linseed oil levels between 21 and 56 days of age
Provedor de dados: 89
Autores: Duarte,KF; Junqueira,OM; Borges,LL; Rodrigues,E; Filardi,R da S; Praes,MFFM; Laurentiz,AC de; Domingues,CH de F.
This study was carried out to evaluate the effect of the inclusion of different linseed oil levels (0.0, 3.3, 6.6, or 9.9%) in iso-energy diets fed during the period of 21 to 56 days of age on the performance, carcass traits, and body composition of broilers. A total of 1,600 broilers were distributed according to a completely randomized experimental design consisting of four treatments with eight replicates of 40 birds per experimental unit. In the period of 21-42 days of age, weight gain increased, feed and calorie conversion ratios quadratically improved, and feed and metabolizable energy intakes linearly increased as dietary linseed oil level increased. Considering the entire experimental period, dietary linseed oil linearly increased weight gain and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ether extract; Weight gain; Abdominal fat; Crude protein; Carcass yield.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100008

Performance, Carcass Traits and Economic Availability of Muscovy Ducks Fed on Different Nutritional Plans in Different Housing Densities
Provedor de dados: 89
Autores: Rufino,JPF; Cruz,FGG; Melo,RD; Feijó,JC; Damasceno,JL; Costa,APG.
ABSTRACT The present study aimed to evaluate ducks on performance, carcass traits and economic availability, fed on different phases of nutritional plans and in different housing densities. Two hundred and forty Muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized in a factorial arrangement of 3x2 with three nutritional plans (3, 4 and 5 phases) and two housing densities (2 and 3 birds/m2) with four replicates. The ducks had weekly performance evaluations, and after 90 days, four birds in each treatment were slaughtered for evaluation of carcass traits. Differences (p&lt;0.05) were observed on performance, carcass traits and economic analysis. The nutritional plans...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yield; Edible visceras; Feed cost; Muscovy ducks; Performance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400689

Performance, Carcass Traits, Biochemical and Hematological Profile, Ileal Microbiota and Nutrient Metabolizability in Broilers Fed Diets Containing Cell Wall of Saccharomyces Cerevisiae and Piperine
Provedor de dados: 89
Autores: Trindade,BS; Lima,CAR; Cardoso,VS; Direito,GM; Machado,NJB; Souza,MMS; Curvello,FA; Corrêa,GSS.
ABSTRACT The objective of this study was to evaluate the inclusion of cell wall of Saccharomyces cerevisiae (CWSc) and piperine in broiler rations and their effects on performance, carcass traits, blood parameters, ileal microbiota and nutrient digestibility. A randomized block design with five treatments and six replicates of 10 birds was used, totaling 300 chickens. The treatments consisted of: control ration (CR); CR + avilamycin (10 mg / kg); CR + CWSc (2.0 g / kg); CR + piperine (60 mg / kg); and CR + CWSc (2.0 g / kg) + piperine (60 mg / kg). The use of isolated piperine resulted in greater weight gain from 9 to 40 days of age (2505g). The additives CWSc and piperine conjugates influenced the lower coliform count in the ceca (4.45 CFU / g) and caused...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additive; Coliforms; Enzymes; Hematocrit.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300322

Performance, Carcass Variables, and Meat Quality of Broilers Supplemented with Dietary Mexican Oregano Oil
Provedor de dados: 89
Autores: Cázares-Gallegos,R; Silva-Vázquez,R; Hernández-Martínez,CA; Gutiérrez-Soto,JG; Kawas-Garza,JR; Hume,ME; Méndez-Zamora,GM.
ABSTRACT The current study was conducted to evaluate the dietary supplementation of Mexican oregano essential oil (MOO; Lippiaberlandieri Schauer) on broiler performance, carcass variables, meat quality, and sensory evaluation. One-day-old mixed-sex broilers were distributed in the following treatment groups, according to MOO supplementation levels: 0 = control diet; 200 = diet + 2200 mg of MOO/kg; 400 = diet + 4200 mg of MOO/kg; 600 = diet + 6200 mg of MOO/kg; 800 = diet + 8200 mg of MOO/kg; 1000 = diet + 1000 mg of MOO/kg. MOO affected (p&lt;0.05) body weight, feed and water intake, and feed conversion ratio. The 200 and 400 mg/kg formulations gave better results at 7, 14 and 28 d than the other diets. MOO at 1000 mg/kg increased (p&lt;0.05) slaughter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Breast; Sensory; Texture.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100320

Performance, carcass yield, and meat quality of free-range broilers fed wet grain corn silage
Provedor de dados: 89
Autores: Saldanha,ESPB; Mendes,AA; Pizzolante,CC; Takahashi,SE; Komiyama,CM; Garcia,RG; Balog Neto,A; Paz,ICLA; Garcia,EA; Dalanezi,JA; Quinteiro,RR.
This study aimed at evaluating the effect of total replacement of dry corn by wet grain corn silage (WGCS) in the feed of label broilers older than 28 days of age on performance, mortality, carcass, parts, breast meat and thighs meat yields, and meat quality. A mixed-sex flock of 448 ISA S 757-N (naked-neck ISA JA Label) day-old chicks was randomly distributed in to randomized block experimental design with four treatments (T1 - with no WGCS; T2 - WGCS between 28 and 83 days; T3 - WGCS between 42 and 83 days; and T4 - WGCS between 63 and 83 days) and four replicates of 28 birds each. Birds were raised under the same management and feeding conditions until 28 days of age, when they started to have free access to paddock with pasture (at least 3m²/bird) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding; Label chickens; Production; Rearing system.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200007

Performance, carcass yield, and qualitative characteristics of breast and leg muscles of broilers fed diets supplemented with vitamin E at different ages
Provedor de dados: 89
Autores: Leonel,FR; Oba,A; Pelicano,ERL; Zeola,NMBL; Boiago,MM; Scatolini,AM; Lima,TMA; Souza,PA; Souza,HBA.
The effects of vitamin E supplementation (300 mg/kg diet) in the diet of broiler chickens for different periods during rearing on the performance and qualitative traits of breast and leg muscles were evaluated. Seven hundred and twenty day-old chicks were distributed into six treatments: basal diet (25 mg vitamin E/kg diet), and diet supplemented with vitamin E from 1 to 15, 1 to 30, 1 to 45, 14 to 45 and 30 to 45 days of age. Vitamin E content, lipid percentage, TBARS (0 and 3 days of storage), color (*L, *a, *b), and pH were evaluated. There were no differences (p&gt;0.05) among treatments in performance, carcass yield, and cut yields. Qualitative parameters (pH and color) presented no differences, although vitamin E positively affected TBARS values at 3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Meat quality; Vitamin E.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000200003

Performance, Growth Curves and Carcass Yield of Four Strains of Broiler Chicken
Provedor de dados: 89
Autores: Nogueira,BRF; Reis,MP; Carvalho,AC; Mendoza,EAC; Oliveira,BL; Silva,VA; Bertechini,AG.
ABSTRACT The objective of this study was to evaluate the performance, carcass yield and growth curves of different commercial strains of broiler chicken. 2400 day-old chicks, males and females of the Cobb500, RossAp95, Hubbard Flex and a new Francesa line were used. The birds were distributed in a completely randomized design in a factorial arrangement 4x2 (line x sex), forming eight treatments with 10 replicates each. The birds were fed with the same diet. Feed intake, weight gain and feed conversion were determined. At 42 days, it was determined at the request of carcass and cuts of each lineage. The Gompertz model was applied to a growth curve for each line. The RossAP95 line shows the best performance results. Growth curves showed lower sexual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicken genetics; Gompertz; Viscera yield.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400309

Performance, Intestinal Morphology and Microbiology of Broiler Chickens Fed Egg Powder in the Starter Diet
Provedor de dados: 89
Autores: Esmailzadeh,L; Shivazad,M; Sadeghi,AA; Karimitorshizi,M.
ABSTRACT The effect of egg powder inclusion in the pre-starter diet (1-7 days of age) on the performance, and intestinal morphology and microbiology of male broiler chickens was evaluated in a completely randomized design. Starter diets with equal metabolizable energy and crude protein levels were formulated to contain 0, 20, 40, or 60 g egg powder/kg diet. Results showed that body weight, feed intake, feed conversion ratio, and European efficiency index were positively affected (p≤0.05) by egg powder inclusion in the starter diet. Inclusion of 40 g egg powder/kg diet in the starter diet promoted the best performance results. Jejunal villus height and villus to crypt ratio increased (p≤0.05) and intestinal length decreased (p≤0.05) as a result of egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Egg powder; Intestinal microbiology; Intestinal morphology; Performance; Starter diet.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400705

Performance of broilers fed diets containing natural growth promoters
Provedor de dados: 89
Autores: Pelicano,ERL; Souza,PA; Souza,HBA; Oba,A; Norkus,EA; Kodawara,LM; Lima,TMA.
The present study evaluated the effect of different probiotics on the performance of broiler chickens. A thousand and fifty one-day-old male Cobb chicks were distributed in a completely randomized design in a 3 x 2 + 1 factorial arrangement (3 probiotics sources in the diet, 2 probiotics concentrations in drinking water and 1 control group), with 5 repetitions of 30 birds per parcel. The results showed better feed conversion (p&lt;0.01) (1-21, 22-35 and 1-45 days) and weight gain (p&lt;0.05) (22-35 and 1-45 days) in the control group in relation to the groups receiving probiotics. The use of Bacillus subtilis in the diet improved (p&lt;0.05) feed conversion during the growing phase, but this was not seen in the following period. Thus, it was concluded that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Performance; Probiotics.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400007

Performance of broilers fed diets with different dietary electrolyte balance under summer conditions
Provedor de dados: 89
Autores: Borgatti,LMO; Albuquerque,R; Meister,NC; Souza,LWO; Lima,FR; Trindade Neto,MA.
The aim of this study was to compare performance and carcass characteristics of broilers fed diets with different Dietary Electrolyte balances (DEB) during the summer season. A total of 1,280 one-day-old Ross sexed chicks were distributed in 32 experimental units according to a randomized block design in a 4x2 factorial arrangement (4 levels and 2 sexes) and 4 replicates per treatment (40 birds per replicate). Feed program consisted of 3 phases (1-21, 22-42, 43-49 days of age). Experimental diets were formulated based on corn and soybean meal and adjusted to 210, 250, 290 and 330 mEq/kg of Na + K - Cl through the addition of sodium carbonate, potassium carbonate and ammonium chloride. Weekly measurements of body weight gain and feed intake were done, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler performance; Chloride; Electrolytes; Potassium; Sodium.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300004

Performance of broilers fed during 21 days on mash or pellet diets containing whole or ground pearl millet grain
Provedor de dados: 89
Autores: Torres,TR; Ludke,M do CM M; Ludke,JV; Santos,MJB dos; Lima,MR; Santos,PA dos.
An experiment was carried out to evaluate the effect of the inclusion of 20% whole-grain or ground pearl millet (PM) in mash and pelleted diets on the performance, carcass traits, and organ weights of broilers reared until 21 days of age. A randomized block experimental design in a 3 x 2 factorial arrangement (diets containing corn and soybean meal, whole-grain PM, or ground PM x mash or pelleted diets), with five replicates per treatment and 10 birds per experimental unit, was applied. Diets were analyzed for mean geometric diameter, geometric standard deviation, pellet hardness, and density. Broiler performance, carcass yield, and organ weights were evaluated. On day 21, one bird with the average weight of each experimental unit was sacrificed for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuff; Body composition; Diet physical form; Weight gain; Organ weight.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400012

Performance of broilers fed increased levels energy in the pre-starter diet and on subsequent feeding programs having with acidulated soybean soapstock supplementation
Provedor de dados: 89
Autores: Vieira,SL; Viola,ES; Berres,J; Olmos,AR; Conde,ORA; Almeida,JG.
This study aimed to evaluate broiler responses to increases in feed energy (2,870, 3,000 and 3,100 kcal ME/kg) and the inclusion of Acidulated Soybean Soapstock (ASS) when compared to Degummed Soybean Oil (DSO) in feeds from placement to 7 days of age. From 7 to 42 days ASS or DSO were included in diets that contained similar energy and nutrient levels. Metabolizable energy values used to formulate the diets for ASS and DSO were 8,351 and 7,701 kcal ME/kg in the first week and 9,314 and 8,559 kcal ME/kg afterwards, respectively. Diets were based on corn and soybean meal and were fed to 1,600 one-d-old male broiler chicks randomly placed in 40 floor pens. No differences in performance due to fat source were seen at 7 days. However, the increase in energy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fat; Pre-starter diet; Soybean fat.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100009

Performance of broilers fed with different levels of methionine hydroxy analogue and DL-methionine
Provedor de dados: 89
Autores: Meirelles,HT; Albuquerque,R; Borgatti,LMO; Souza,LWO; Meister,NC; Lima,FR.
One-day-old male Ross chicks were used in an experiment designed to compare two methionine sources, DL-methionine and methionine hydroxy analogue free acid (MHA-FA), and four different levels: 0.41; 0.47; 0.53; 0.59% (starter diet); 0.35; 0.41; 0.47; 0.53% (grower diet); and 0.30; 0.36; 0.42; 0.48% (finisher diet). One thousand two hundred and eighty chicks were housed in 32 experimental floor-pens (40 birds each) and fed 8 experimental diets based on corn and soybean meal for 47 days. The effects of methionine sources and levels were evaluated by performance data, carcass and cut yields, feather yield and abdominal fat content. Data were analyzed as a completely randomized design in a 2x4 factorial arrangement (2 sources and 4 levels), with 8 treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Broilers; Carcass yield; Methionine source; Performance.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100009

Performance of Broilers Reared under Monochromatic Light Emitting Diode Supplemental Lighting
Provedor de dados: 89
Autores: Guevara,BDM; Pech,PS; Zamora,BR; Navarrete,SLF; Magaña,SHF.
ABSTRACT The purpose of this study was to evaluate the effect of green monochromatic light emitting diodes (LED) or white fluorescent lamps on the growth performance of broilers reared in open houses. Two hundred broilers (Ross 308) were sexed and divided into four treatments, according to sex and supplemental light source: T1, males under green LED; T2, males under fluorescent lamps; T3, females under green LED; and T4, females under fluorescent lamps, totaling 50 birds per treatment with five replicates each (n=10). Broilers of both sexes received natural light during the day and supplemental lighting (fluorescent or LED) during the night, according to age. Individual body weight, mortality, and feed intake were recorded weekly per replicate. Feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Light Emitting Diode; Light intensity; Photoperiod; Light wavelength; Broiler.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400553

Performance of broilers submitted to high CO2 levels during incubation combined with temperature fluctuations at late post-hatch
Provedor de dados: 89
Autores: Fernandes,JIM; Bortoluzzi,C; Esser,AFG; Contini,JP; Stokler,PB; Faust,D.
Incubation represents around 1/3 of the life cycle of broilers of modern strains; therefore, the appropriate management of this period is crucial to ensure the quality of the neonate. An experiment evaluated the effect of carbon dioxide concentrations during incubation on the live performance, heart morphology, and differential leukocyte count in the blood of broilers submitted to fluctuating temperatures between 35 and 42 days of age. In total, 2,520 fertile eggs were distributed according to a completely randomized design with four CO2 concentrations (4,000; 6,000; 8,000 and 10,000 ppm) during the first ten days of incubation, after which all eggs were incubated at the same CO2 level (4,000 ppm). After hatching, male chicks were placed in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyclic variation of temperature; Heterophil/Lymphocyte ratio; Hypercapnia.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300009

Performance of Chicks Submitted to Fasting Post-Hatching and with Maltodextrine Supplementing to Diet as Hydrating and Energetic Additive
Provedor de dados: 89
Autores: Machado,CA; Fernandes,EA; Carvalho,LSS; Litz,FH; Gotardo,LRM; Braga,PFS.
ABSTRACT This study aimed to evaluate the effect of maltodextrin on performance of chicks passed through four fasting periods. A completely randomized design was performed, consisting of three treatments (1 - control, 2 - 4% saccharose; 3-4% maltodextrin 20) and four fasting periods after hatching (0, 12, 24 and 36 hours) with four replications, totaling 1920 birds of both sexes. The studied variables were: water intake in the first 12 hours, average food intake, average body weight and real feed conversion. Data was submitted to analysis of variance and means were compared with each other by Dunnett test at 5% significance. The use of additives and imposing of different fasting periods did not influence the performance at 42 days old. Therefore, fasted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additive; Broiler; Productivity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500009

Performance of Commercial Laying Hen Submitted to Different Debeaking Methods
Provedor de dados: 89
Autores: Oka,CH; Bueno,LGF; Souza,SRL; Balan,JAO; Silva,KM; Polycarpo,GV; Iwayama,LH.
ABSTRACT Among the several factors required in breeding laying hens, debeaking is a factor that interferes with batch performance and affects animal welfare. Thus, the objective of this study was to evaluate three different debeaking procedures and to verify the best technique to be used. For this, the performance of the birds, the incidence of cannibalism, and in rearing phase, the quality of the eggs were evaluated. Dekalb White birds were distributed in a completely randomized design with three treatments, T1 (infrared radiation debeaking) T2 (hot blade debeaking) and T3 (V debeaking).The data was submitted to Analysis of Variance and compared by Tukey’s test (95%), using statistical software R. The frequencies of mortality and cannibalism were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Behavior; Stress; Egg quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400717

Performance of female broiler breeders submitted to different feeding schedules
Provedor de dados: 89
Autores: Avila,VS de; Penz Jr.,AM; Brum,PAR de; Rosa,PS; Guidoni,AL; Figueiredo,ÉAP de.
The performance of Arbor Acres broiler breeders (1,296 females; 144 roosters) was evaluated when submitted to the following treatments (T): T1 = feeding at 6:30 a.m. (control); T2 = 50% feeding at 6:30 a.m. and 50% at 3:30 p.m. (dual feeding); T3 = feeding at 11:00 a.m.; and T4 = feeding at 3:30 p.m. Treatments were randomly distributed in 48 pens. There were 27 females and 3 males in each pen and 12 repetitions per treatment. Nutrition and management were as recommended for the commercial strain. It was evaluated age at first egg (AFE), total egg production (TEP), number of days with production above 80% (DAP80), laying peak (P), female mortality (MOR), and gross profit margin (GM) per hen. Data were submitted to analysis of variance and means were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Economic evaluation; Feeding time; Performance.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300007

Performance of free-range chickens reared in production modules enriched with shade net and perches
Provedor de dados: 89
Autores: Santos,MJB; Pandorfi,H; Rabello,CBV; Silva,EP; Torres,TR; Santos,PA; Morril,WB; Duarte,NM.
An experiment was carried out to evaluate the effect of environmental enrichment in a free-range chicken production system on live performance as a function of microclimate, physiological parameters, and performance parameters. Four production modules were divided into four pens with 10 birds each, totaling 60 birds. The following treatments were applied: access to a paddock (TEST), access to a paddock with perches (PER), access to a paddock with artificial shade (SHA), and access to the paddock with perches and artificial shade (PESH). The PESH production module presented the best globe temperature (Tbg,ºC) and enthalpy (h, kJ/kg), and thereby, the best thermal environmental conditions, which ensured the longest permanence time of the birds in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal behavior; Physiological parameters; Poultry production; Thermal comfort.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100003

Performance of japanese quails fed feeds containing different corn and limestone particle sizes
Provedor de dados: 89
Autores: Berto,DA; Garcia,EA; Móri,C; Faitarone,ABG; Pelícia,K; Molino,AB.
This study aimed at evaluating performance and egg quality of Japanese quails fed feeds containing different corn and limestone particle sizes. A total number of 648 birds in the peak of production was distributed in a random complete block experimental design, using a 2x3 factorial arrangement (2 corn particle sizes and 3 limestone particle sizes). Birds were designated to one of two blocks, with six replicates of 18 birds each. Mean geometric diameter (MGD) values used were 0.617mm and 0.723mm (corn fine and coarse particle sizes, respectively), and 0.361mm, 0.721mm, and 0.947mm (limestone fine, intermediate and coarse particle sizes, respectively). The following treatments were applied: T1: fine corn feed, with 100% fine limestone; T2: fine corn feed,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corn; Egg quality; Geometrical diameter; Lmestone; Performance.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300005

Performance of layers fed diets containing different oils
Provedor de dados: 89
Autores: Lelis,GR; Silva,MD da; Tavernari,F de C; Albino,LFT; Rostagno,HS.
A trial was carried out at the Animal Science Department of the Federal University of Viçosa to evaluate the performance of heavy and light layers. During four periods of twenty-eight days, 432 layers in the second production cycle, being 216 Hy Line W36 (light birds) and 216 Hy Line Brown (heavy birds), were used. A completely randomized experimental design with a 1+(4x2x2) factorial arrangement (one control treatment, four oil sources, two inclusion levels, and two genetic lines) with four replicates of six birds per experimental unit, was applied. The treatments consisted of diets containing 16.5% crude protein, formulated to supply the nutritional requirements, and the inclusion of each oil source at 2 or 4%. Soybean, canola, linseed and fish oils were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canola oil; Fish oil; Layers; Linseed oil; Performance; Soybean oil.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400004

Performance of layers submitted to different forced-molting methods and different temperatures
Provedor de dados: 89
Autores: Sgavioli,S; Filardi,R da S; Praes,MFFM; Assuena,V; Pileggi,J; Andrade,P de C; Boleli,I C; Junqueira,OM.
This study was carried out to evaluate the performance and egg quality of laying hens, in their second laying cycle submitted to different forced-molting methods and three environmental temperatures. Six hundred layers were distributed in a completely randomized experimental design with 15 treatments with five replicates of eight birds each, according to 5x3 factorial arrangement (molting methods vs. temperatures). The following forced-molting methods were applied: 90%, 70%, 50% dietary alfalfa inclusion, addition of 2,800 ppm zinc, and feed fasting. Temperatures were: 20 ºC, 27 ºC and 35 ºC. At the end of each period of the second laying cycle, bird performance and egg quality were evaluated. Data were submitted to analysis of variance and means were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Heat stress; Performance; Welfare.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300008

Performance Parameters, Plasma Lipid Status, and Lymphoid Tissue Fatty Acid Profile of Broiler Chicks Fed Camelina Cake
Provedor de dados: 89
Autores: Anca,G; Hăbeanu,M; Lefter,NA; Ropotă,M.
ABSTRACT The effects of dietary camelina cake (CAMC) on broiler chicks’growth performance, plasma lipid status and fatty acid profile (FA) of lymphoid organs were evaluated. Six hundred broilers (3-week-old, Cobb 500) were randomly allotted for 20 days in a feeding trials into 2 groups: control (C; corn-soybean meal-canola meal basal diet) and experimental (CAMC; 80 g CAMC/kg diet replaces canola meal from C diet). Blood samples (n=12/group) were collected on day 42 for plasma profile analysis (glucose, Glu; total cholesterol, TC; high-density lipoprotein cholesterol, HDL-C; low-density lipoprotein cholesterol, LDL-C; triglycerides) and immune organs (spleen, thymus, bursa of Fabricius) for FA analysis. The FA profile of lymphoid tissue was determined by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers performance; Camelina cake; Immune organs; N-3 fatty acids; Plasma lipid profile.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400318

Period of incubation and posthatching holding time influence on broiler performance
Provedor de dados: 89
Autores: Almeida,JG; Vieira,SL; Gallo,BB; Conde,ORA; Olmos,AR.
The present study had the objective of investigating the performance of broilers housed immediately after hatching or after a 12 or 24 hour of post-hatching holding time. One thousand and six hundred male Ross 308 broiler chicks with an initial body weight of 46 grams were used. These chicks were distributed in a completely randomized experimental design with 5 treatments and 8 replications of 35 birds in each treatment. The treatments in this study consisted of the removal of chicks from the hatchery in three different times: after 480, 492 and 504 hours of incubation. In each one of these times, 280 chicks were removed from the hatchery and immediately housed. Another group of an identical number of chicks of each time remained in the hatchery to be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post-hatch period; Broiler performance; Incubation period; Hatchability.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300003

Ph, Ammonia Flux, and Total Nitrogen in Duck Litter with Chemical Blends - A Field Study
Provedor de dados: 89
Autores: Chung,TH.
ABSTRACT This study was designed to evaluate the effects of chemical blend additives to duck litter on pH, ammonia (NH3) fluxes, total nitrogen (TN) under a small pen trial. One hundred twenty 1-day-old duck (pekin) were randomly assigned to 6 pens in a completely randomized design during 6 weeks. Control received no litter treatment whereas top-dressed treatment at rates of 50 g aluminum sulfate + 50 aluminum chloride/kg duck litter were mixed into the upper 1 cm of duck litter. Duck litter pH at 2 weeks through 5 weeks was significantly affected (p&lt;0.05) by chemical blend treatments compared to controls, but not at 6 weeks. During the experimental periods, NH3 fluxes decreased (p&lt;0.05) in chemical blend treatments. However, there were no remarkable...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Chemical blend; PH; Ammonia flux; Total nitrogen; Duck litter.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400733

Phenotypic and Genotypic Antibiotic Resistance of Salmonella from Chicken Carcasses Marketed at Ibague, Colombia
Provedor de dados: 89
Autores: Vélez,D Cortes; Rodríguez,V; García,N Verjan.
ABSTRACT Salmonella enterica is responsible for alimentary toxic infections associated with the consumption of contaminated poultry products and the antimicrobial resistant patterns of Salmonella circulating in the Tolima region are currently unknown. To address this issue, both the phenotype and genotype antibiotic resistance patterns of 47 Salmonella isolated from raw chicken carcasses sold at the Ibague city were analyzed by the disc diffusion, microdilution and PCR assays. All 47 Salmonella isolates showed resistance to five or more antimicrobial agents. Resistance to Ampicillin (AMP), Amikacin (AMK), Gentamicin (GEN), Tobramycin (TOB), Cefazoline (CFZ), Cefoxitin (FOX), Nitrofurantoin (NIT), Trimethoprim-Sulfamethoxazole (SXT), Tetracycline (TET),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial resistance; Poultry products; Serovars.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200347

Phenotypic and genotypic resistance profile of Salmonella Typhimurium to antimicrobials commonly used in poultry
Provedor de dados: 89
Autores: Biffi,CP; Stefani,LM; Miletti,LC; Matiello,CA; Backes,RG; Almeida,JM; Neves,GB.
Isolates of Salmonella sp (104) from poultry samples were isolated and serotyped where eleven were identified as Salmonella Typhimurium (ST). ST isolates were phenotypically tested by disk diffusion and minimum inhibitory concentration (MIC). Four genes related to enrofloxacin (GyrA, GyrB, ParC and ParE), two to gentamicin (AadA and AadB) and two to ceftiofur (BlaCMY-2 and AmpC) resistance were searched by PCR. Our results showed ST resistance to all three antibiotics tested (18.1% for ceftiofur, 45.4% for gentamicin, and 18.1% for enrofloxacin) according to the diffusion test. In the MIC test, the ST isolates showed higher levels of resistance (27.2% for ceftiofur, 54.5% for gentamicin, and 18.2% for enrofloxacin). Three resistance genes out of four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial; Gene; Resistance; Salmonella.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200013

Photogrammetry: a Non-Invasive and Objective Method for Detecting Locomotion Problems in Broiler Chickens
Provedor de dados: 89
Autores: Mendes,AS; Paixão,SJ; Sikorski,RR; Bonamigo,DV; Morello,MG; Ponzoni,RAR.
ABSTRACT Locomotion problems in broiler chickens can cause economic losses of up to 40% of the total revenues due to carcass condemnation and downgrading at processing. Leg disorders, such as femoral lesions, tibial dyschondroplasia, and spondylolisthesis, substantially impact the welfare of chickens as these disorders can prevent birds from reaching the feeders and drinkers, thus reducing feed and water intake. The most important issues related to broiler welfare reported in the last two decades are their growing sensitivity to metabolic and locomotion problems due to the fast growth rates and inactivity. Traditional methods for the determination of gait score include the manual scoring of animal behavior in the broiler house. Recorded video images can...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry production; Animal welfare; Femoral degeneration; Tibial dyschondroplasia.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400573

Photonic Imaging with Optical Coherence Tomography for Quality Monitoring in the Poultry Industry: a Preliminary Study
Provedor de dados: 89
Autores: Sabuncu,M; Akdoğan,M.
ABSTRACTA photonic imaging method that gives the possibility to measure egg quality was applied. Since the method is non-contact and non-destructive we believe that this photonic imaging method may be successfully integrated in the automated inspection systems in the poultry industry. The method involves scanning an invisible infrared light beam over the eggshell, allowing to detect possible cracks and reveal information about the structure of the eggshell. The high resolution, high quality measurements obtained through optical coherence tomography (OCT) make it feasible to be utilized as part of an automated inspection system. In this paper we present an OCT scan image of the egg tip and reconstructed volumetric images of the eggshell surface. The method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commercial egg; Egg quality; Optical coherence tomography; Automated inspection.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300319

Phylogenetic and Pathotypic Characterization of a Newcastle Disease Virus Strain Isolated from Ducks and Pigeons in Hubei, China
Provedor de dados: 89
Autores: Wang,Y; Zhang,H; Gu,C; Cheng,G; Zhang,W; Mehmood,K; Hu,X.
ABSTRACT Newcastle disease is a highly contagious disease responsible for major outbreaks and considerable economic losses in the poultry industry in China. There is still little information available regarding gene characterization of the NDV, especially in ducks and pigeons. Therefore, the aim of this study was to investigate NDV isolated from ducks and pigeons in Hubei, China. In this study, three NDVs from ducks and pigeons were isolated between 2013 and 2015.The fusion protein (F) gene of the NDV isolates was sequenced and phylogenetically analyzed. The clinical signs and gross histopathological lesions were examined. Phylogenetic analysis of these strains indicated that all the sequences are classified as genotype II. The isolates shared a 112...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Newcastle disease virus; Phylogenetic analysis; Pathology; Ducks; Pigeons.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100145

Physical-Chemical and Sensorial Quality of Eggs Coated With Copaiba Oil Biofilm and Stored At Room Temperature for Different Periods
Provedor de dados: 89
Autores: Brasil,RJM; Cruz,FGG; Rufino,JPF; Oliveira Filho,PA; Freitas,BKM; Viana Filho,GB.
ABSTRACT The present study aimed at evaluating the effects of a coating based on copaiba oil on the quality of eggs stored for different periods. Eggs were coated with copaiba oil solutions (4, 8, 12, 16, or 20% copaiba oil) or not (control) and stored for 1, 7, 14, 21, 28 or 35 days at room temperature. The following parameters were evaluated: egg weight loss, egg components (albumen, yolk, and eggshell) relative weights, egg specific gravity, Haugh units, eggshell quality, and sensorial attributes. Eggs stored for 35 days presented the highest weight losses. Coating (20% copaíba oil solution) reduced egg weight loss up to 41.02%. Coated eggs presented better internal quality (yolk and albumen heights, specific gravity, and eggshell strength). Sensorial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copaifera sp.; Egg quality; Eggshell strength; Storage.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400302

Physical-Chemical Characteristics of Designer and Conventional Eggs
Provedor de dados: 89
Autores: Kralik,Z; Kralik,G; Grčevi&amp;#263;,M; Kralik,I; Gantner,V.
ABSTRACT The objective of this study was to compare the internal and external quality of conventional and designer eggs. In total, 120 Tetra SL laying hens were randomly allotted to two treatments (K and P groups), with 12 replicates of five hens each. The control group (K) was fed a standard layer diet, producing conventional eggs, and the P group was fed a modified diet supplemented with 5% of an oil mixture, 0.5 mg organic selenium/kg, 200 mg lutein/kg and 200 mg vitamin E/kg, producing designer eggs. Treatments did not influence (p&gt;0.05) egg weight or egg component weights. Designer eggs presented higher albumen proportion and lower eggshell proportion than conventional eggs (p&lt;0.01). Relative to egg quality parameters, designer eggs presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Designer eggs; Haugh units; Laying hens; PH; TBARS.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100119

Physicochemical Characteristics and Lipid Oxidation of Chicken Inner Fillets Subjected to Different Thermal Processing Types
Provedor de dados: 89
Autores: Arguelo,NN; Garcia,ERM; Ferreira de Lara,JA; Ferraz,ALJ.
ABSTRACT The objective of this study was to evaluate the effects of different types of thermal processing on the physiochemical characteristics and lipid oxidation of chicken inner fillets. The study was divided into three assays. In the first assay, 50 chicken inner fillets were divided into five treatments, totaling 10 samples per treatment. Treatments consisted in cooking in water bath, electric oven, microwave oven, deep frying, or grilling. The analyzed variables were: cooking weight loss (CWL) and lipid oxidation determined by thiobarbituric acid reactive substances (TBARS). In the second assay, 50 chicken inner fillets were divided into five treatments, totaling 10 samples per treatment. Each treatment consisted of the same cooking methods applied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cooking; Freezing; Myofibrillar fragmentation index; Lipid oxidation; Reheating.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300443

Physiological Responses of Slow-Growing Chickens under Diurnally Cycling Temperature in a Hot Environment
Provedor de dados: 89
Autores: Mutibvu,T; Chimonyo,M; Halimani,TE.
ABSTRACT Free-range chicken production has significantly increased in recent years and it often entails exposing birds to cyclic environmental conditions. The objective of the current study was to investigate the effect of bird strain and sex, and rearing system on the physiological responses of Potchefstroom Koekoek (PK), Ovambo (OV) and Naked Neck (NN) chickens reared in a hot environment. Body weight (BW), rectal temperature (RT), respiratory rate (RR) and heart rate (HR) were determined weekly for 4 weeks, in 3 slow-growing chicken strains under cyclic environmental conditions. A total of 288, 20-week old Potchefstroom Koekoek (PK), Ovambo (OV) and Naked Neck (NN) chickens were separated by sex and allocated to extensive and intensive rearing systems....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extensive; Intensive; Respiratory rate; Heart rate; Strain; Temperature.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400567

Phytase Superdosing in the Diet of Lightweight Replacement Pullets: Performance, Organ Biometry and Bone Characteristics
Provedor de dados: 89
Autores: Sena,TL; Leite,SCB; Farias,MRS; Abreu,CG; Freitas,ER; Costa,AC.
ABSTRACT The aim of this study was to evaluate the effect of two types of phytases (the 1st produced from Escherichia coli and the 2nd from Aspergillus oryzae) with different dosages (300 and 900 Unit Phytase or FTU) on performance, organ biometry and bone quality of replacement pullets in the period of 8 to 17 weeks of age. A total of 288 Hy-Line White laying hens were used at 8 weeks of age. A completely randomized design was adopted in a 2 x 2 factorial scheme, totaling 4 treatments with 8 replicates of 9 birds each. Performance, biometric variables and bone characteristics were evaluated. There was no significant interaction between the factors for any of the evaluated variables. The conversion and the accumulated consumption were influenced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myo-inositol; Phytate; Phytic acid.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400306

Phytobiotic Activity of Piper Auritum and Ocimum Basilicum on Avian E. Coli
Provedor de dados: 89
Autores: Aguilar-Urquizo,E; Itza-Ortiz,MF; Sangines-Garcia,JR; Pineiro-Vázquez,AT; Reyes-Ramirez,A; Pinacho-Santana,B.
ABSTRACT Natural antimicrobials, known as phytobiotics, are used in bacterial infections. The objective of this study was to evaluatethe phytobiotic activity, in vitro and in vivo, of an extract and an essential oil of Piper auritum and Ocimum basilicum on avian Eschericia coli serotype O2 in broiler chickens experimentally infected. For the in vitro test, extracts at 4, 8, 12 and 16% in water-based solvent or alcohol at 70% were prepared from leaves of both plants. In the essential oils, solvents at 10% were used. A concentration of 1×108 CFU mL-1 of bacteria was seeded and on each sense disc, 25 µL of the extract or essential oil were poured, except on the positive or negative control. The diameter of the inhibition zone (DIZ) of bacterial growth was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colibacillosis; Phytobiotic; Piper auritum; Ocimum basilicum.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100327

Phytobiotic Effect of Anacardium occidentale L. Leaves Powder on Performance, Carcass Traits, and Intestinal Characteristics in Broilers
Provedor de dados: 89
Autores: Martínez,Y; Tobar,LA; Lagos,HM; Parrado,CA; Urquía,AM; Valdivié,M.
ABSTRACT In order to evaluate the phytobiotic effect of cashew (Anacardium occidentale L.) leaves powder (CLP) on growth performance, carcass traits, lymphoid organ weights and cecal lactic-acid bacteria in broilers, a total of 720 unsexed broilers of the Ross 308® genetic line were distributed according to a completely randomized design with three experimental treatments, five repetitions and 48 chickens per repetitions. The experimental treatments consisted of a basal diet (DB; T0) and DB + supplementation with 0.50 (T1) and 0.75% (T2) of CLP. At 32 days, the body weight, feed intake and feed conversion ratio were not modified (p&gt;0.05) by the experimental groups; however, T1 increased (p&lt;0.05) the viability compared to T0. Additionally, T2 improved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cashew; Productive indicator; Breast characteristics; Organ.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100309

Phytogenic additives and glutamine plus glutamic acid in broiler diets
Provedor de dados: 89
Autores: Pelícia,VC; Stradiotti,AC; Araujo,PC de; Maruno,MK; Carvalho,FB de; Pezzato,AC; Sartori,JR.
The objective of this study was to evaluate the effect of the dietary supplementation of phytogenic additives (PAs) and glutamine plus glutamic acid (Gln/Glu), associated or not, in replacement of antibiotic growth promoters and anticoccidials (AGP/AC) on the performance and carcass yield of broilers. Five hundred male Cobb broilers were housed in an experimental house and randomly distributed into five treatments, with four replicates of 25 birds each. Treatments consisted of a control diet (CD); CD+AGP/AC; CD+Gln/Glu; CD+PAs; CD+Gln/ Glu+PAs. Diets were formulated only with plant feedstuffs, i.e., they did not contain any animal byproducts. Performance data were collected for the accumulated periods of 1-7, 1-21, and 1-42 days of age. Carcass yield and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative additives; Plant extracts; Essential oils.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400002

Pirarucu By-Product Acid Silage Meal in Diets for Commercial Laying Hens
Provedor de dados: 89
Autores: Batalha,OS; Alfaia,SS; Cruz,FGG; Jesus,RS; Rufino,JPF; Silva,AF.
ABSTRACT This study aimed to evaluate the inclusion of pirarucu by-product acid silage meal in diets for laying hens on performance and egg quality. One hundred sixty eight Hissex White laying hens 73-wk-old were distributed in completely randomized design with seven treatments (0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0%) and four replicates of six birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of pirarucu by-product meal levels were determined by polynomial regression. Differences (p&lt;0.05) were observed in all variables of performance, in egg weight, yolk height and yolk pigmentation, with pirarucu by-product meal inclusion in diets showed better results than control diet. The pirarucu by-product acid silage meal can...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative food; Egg quality; Fish by-product; Flavor; Performance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200371

Plant extracts used as growth promoters in broilers
Provedor de dados: 89
Autores: Barreto,MSR; Menten,JFM; Racanicci,AMC; Pereira,PWZ; Rizzo,PV.
Two experiments were carried out to assess the efficacy of plant extracts as alternatives for antimicrobial growth promoters in broiler diets. The performance experiment included 1,200 male broilers raised from 1 to 42 days of age. The metabolism experiment used 96 male broilers in the grower phase housed in metabolic cages for total excreta collection. At the end of the metabolism experiment, 24 birds were sacrificed to assess organ morphometrics. In both experiments, the following treatments were applied: control diet (CD); CD + 10 ppm avilamycin; CD + 1000 ppm oregano extract; CD + 1000 ppm clove extract; CD + 1000 ppm cinnamon extract; and CD + 1000 ppm red pepper extract. The microencapsulated extracts contained 20% of essential oil. No significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apparent metabolizable energy; Broilers; Nutrition; Growth promoters; Plant extracts.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200006

Polymorphisms and their Haplotype Combinations in the Lysozyme Gene Associated with the Production Traits of a Chinese Native Chicken Breed
Provedor de dados: 89
Autores: Yan,LJ; Fang,XT; Liu,Y; Zhang,CL; Chen,H.
ABSTRACT Animal lysozymes, which have been studied in many of invertebrate and vertebrate species, have been characterized and demonstrated to be immune-associated molecules, digestive enzymes and multifunctional molecules. The purpose of this study was to detect the connection between lysozyme-gene polymorphism and the production traits of a Chinese native chicken breed (Langshan chicken). Four single nucleotide mutation sites were identified: G345A, C1726T, G1836A, A1838G. By the linkage disequilibrium analysis, six haplotypes and 15haplotype combinations were depicted in the studied population. The statistical analysis demonstrated that the SNPs and the haplotype combinations are related to body weight at sixteen weeks of age in Langshan chickens...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lysozyme gene; Haplotype; Association; Langshan chicken; PCR-SSCP.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100053

Pore Size Distribution in Chicken Eggs as Determined by Mercury Porosimetry
Provedor de dados: 89
Autores: La Scala Jr,N; Boleli,IC; Ribeiro,LT; Freitas,D; Macari,M.
In this study we investigated the application of mercury porosimetry technique into the determination of porosity features in 28 week old hen eggshells. Our results have shown that the majority of the pores have sizes between 1 to 10 mu m in the eggshells studied. By applying mercury porosimetry technique we were able to describe the porosity features better, by determining a pore size distribution in the eggshells. Here, we introduce mercury porosimetry technique as a new routine technique applied into the study of eggshells.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell porosity; Mercury porosimetry.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200007

Potential use of molecular-typing methods for the identification and characterization of salmonella enterica serotypes isolated in the poultry production chain
Provedor de dados: 89
Autores: Baratto,CM; Gelinski,JMLN; Bernardi,AZ; Marafon,A; Braun,F.
Salmonella is widespread in nature and can be found in all links of the poultry production chain. Due to its high impact on meat processing, techniques for the rapid detection and reproducible characterization of Salmonella serotypes in foods are needed. The present study investigated the potential of molecular profiling to identify and differentiate 15 Salmonella serotypes isolated from the poultry production chain, based on 5 primers by random amplified polymorphic DNA (RAPD), enterobacterial repetitive intergenic consensus (ERIC-PCR), amplification of rDNA internal spacer analysis (RISA), and amplified ribosomal DNA restriction analysis (ARDRA) of 16S-23S rRNA internal spacer region (ISR) cleaved with Alu I and Hha I restriction enzymes. Three isolates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Molecular analysis; Salmonella; Serotypes; Typing.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300003

Potential Value of Using Insect Meal As an Alternative Protein Source for Japanese Quail Diet
Provedor de dados: 89
Autores: Hatab,MH; Ibrahim,NS; Sayed,WA; Sabic,EM.
ABSTRACT A feeding trial was conducted to determine the potential value of replacing 100 % of meat and bone meal (MBM) ingredient as the major animal protein source in Japanese quail diets by 50% and 100% of insect meal derived from S. littoralis Larvae. A total of 360, 7 days-old quail chicks, were randomly divided into three equal groups (120 chicks) with three replicates each. They were offered three different diets 1, 2 and 3, respectively. The Diet 1 contained MBM only as a major source of animal protein, diet 2 had both MBM (50%) and insect meal (50%) while diet 3 contained insect meal (100%). Results: Partial or total replacement of S. littoralis larvae with MBM increased body weight gain and improved feed conversion ratio (p≤0.05). Moreover,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insect meal; Quail chicks; Performance; Hematological; Biochemical indices.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100303

Poultry Egg Incubation: Integrating and Optimizing Production Efficiency
Provedor de dados: 89
Autores: Boleli,IC; Morita,VS; Matos Jr,JB; Thimotheo,M; Almeida,VR.
ABSTRACT Due to its central position in the production chain, in-ovo development is influenced by pre-incubation factors that affect the quality of embryonated eggs and incubation conditions themselves, and both may influence egg hatchability and chick quality, as well as bird survival, growth performance, and phenotype in the field. The evolution of the incubation process over the years is characterized by significant scientific and technological development. Presently, the main current focuses of research are the manipulation of thermal incubation conditions, eggshell temperature, and the integrated effects of factors that influence incubation. In this context, one of the questions that needs to be asked is how effective are the current physical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gas exchange; Heat transfer; Incubation conditions; Incubation management; Physics of incubation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600001

Poultry feed metabolizable energy determination using total or partial excreta collection methods
Provedor de dados: 89
Autores: Dourado,LRB; Siqueira,JC; Sakomura,NK; Pinheiro,SRF; Marcato,SM; Fernandes,JBK; Silva,JHV.
The aim of this work was to compare the efficiency of total (TC) or partial (PC) collection excreta methods to determine metabolizable energy in poultry feeds. A number of 180 12- to 21-day-old broilers were distributed into two treatments of six replicates of 10 birds each. A reference-diet was formulated to supply broiler requirements, and the test-diets consisted of 60% of reference diets and 40% of corn or soybean meal. Celite was added at 1% to the diets as a marker. Excreta and diet samples were analyzed for dry matter, energy, nitrogen, and acid-insoluble ash (AIA). AME of corn determined by partial collection (PC) was higher (3544 kcal/kg) as compared to total collection (TC) (3133 kcal/kg). However, no difference were observed for soybean meal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acid insoluble ash; AIA; Broiler; Digestibility; Marker; Partial collection method.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000200010

Poultry offal meal traceability in meat quail tissues using the technique of stable carbon (13C/12C) and nitrogen (15N/14N) isotopes
Provedor de dados: 89
Autores: Móri,C; Garcia,EA; Ducatti,C; Denadai,JC; Gottmann,R; Mituo,MAO.
Studies on the detection of animal by-products in poultry meat are rare, and non-existent on quail meat. This study aimed at detectiong increasing levels of poultry offal meal (POM) in quail meat, using carbon (13C/12C) and nitrogen (15N/14N) stable isotopes technique. Sixty four on-day-old male quails derived from a commercial farm were randomly distributed into seven different groups, which were fed experimental diets containing 0, 1.5, 3.0, 4.5, 6.0, 7.5, and 15% of POM. Diets were formulated to contain equal energy, protein, and amino acid levels. Four individuals per treatment were sacrificed at 42 days of age for breast muscle (Pectoralis major), keel, and tibia collection, which were subsequently submitted to analyses. Isotopic δ13C and δ15N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix coturnix; Diets; Stable isotopes; Traceability.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100007

Poultry welfare scenario in South America: norms and regulations
Provedor de dados: 89
Autores: Silva,RBTR; Nääs,IA; Broom,DM; O'Driscoll,K.
Animal welfare related issues have been intensely discussed in recent years as a consequence of changes in public attitudes and regulatory reforms that are taking place in many countries. A combination of public opinion pressure and trade policy has driven requirements for regulation and the World Trade Organization (WTO) assigned the World Organization for Animal Health (OIE) to develop guidelines that could be used as international standards. However, trade disputes related to animal welfare are not likely to be resolved under the auspices of OIE, and access to international markets may be questioned in a way that does not necessarily reflect attitudes to animal production in emerging economies, such as those in South America. This paper presents an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competitiveness; Developing countries; International trade; Welfare policies.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200001

Practical Assessment of Spaghetti Breast in Diverse Genetic Strain Broilers Reared under Different Environments
Provedor de dados: 89
Autores: Montagna,FS; Garcia,G; Nääs,IA; Lima,NDS; Caldara,FR.
ABSTRACT Brazilian processing plants have identified the so-calledspaghetti breast myopathy characterized by muscular dystrophy of unknown etiology. This study aimed at estimating the incidence of spaghetti breast myopathyin broilers from three commercial genetic strains (Ross, Cobb, Hubbard) reared in two different housing systems (DH, Dark house, and TS, Tunnel system), presenting different controlled ventilation systems and light availability. Breast meat samples (n=5,580) were collected and macroscopically evaluated for spaghetti breast myopathy according to a 0-2 scale, as 0 = normal, 1 = intermediate or moderate, and 2 = severe. A higher number of broilers reared in DH presented normal breasts and moderate myopathy relative to TS-reared birds. Ross...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Muscle structure; Pectoralis major; Rearing environment; Genetic strain; Myopathy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200316

Prebiotic, probiotic and symbiotic as alternative to Antibiotics on the Performance and Immune Response of Broiler Chickens
Provedor de dados: 89
Autores: Murarolli,VDA; Burbarelli,MFC; Polycarpo,GV; Ribeiro,PAP; Moro,MEG; Albuquerque,R.
This study aimed to evaluate diets supplemented with prebiotic, probiotic and symbiotic as an alternative to antibiotics on the performance and immune response against the virus of Newcastle disease in broiler chickens. 1,400 one-day old male Cobb 500 chicks were raised until 42 days old in a completely randomized design with 2x2+1 factorial scheme with seven replications. The treatments were: diet without supplementation (base diet - BD), BD + prebiotic, BD + probiotic, BD + symbiotic (prebiotic + probiotic), and BD + antibiotic. The parameters evaluated were performance and antibody serum titers against Newcastle disease. No antibiotic effect was observed on performance. The symbiotic provided better results for weight gain and feed:gain ratio until 21...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative additives; Performance enhancers; Vaccine titerss.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300008

Precision livestock tools to improve products and processes in broiler production: a review
Provedor de dados: 89
Autores: Mollo,MN; Vendrametto,O; Okano,MT.
Economic growth and production process development require technological support. Technology changes production functions, enabling a higher number of goods to be produced using the same amount of input. In this review, we discuss research and development in information technology that has led to innovative actions, with the new generation of tools, known as precision agriculture tools, that can be applied in Brazilian poultry production. In this context, research and development have focused on producing technological innovations based on increasingly specialized tools that go beyond human mind power, and are related to the acquisition, access, and processing of a huge number of data. The technology generated to date has assimilated the knowledge of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agribusiness; Decision support system; Precision agriculture; Research and development; Technological innovation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400001

Preliminary studies of alternative feed additives for broilers: Alternanthera brasiliana extract, propolis extract and linseed oil
Provedor de dados: 89
Autores: Biavatti,MW; Bellaver,MH; Volpato,L; Costa,C; Bellaver,C.
The influence of alternative treatments using fluidextracts of Alternanthera brasiliana, propolis resin and linseed oil on the performance and blood biochemistry of broilers was evaluated. The study was done with five treatments: basal diet (negative control); basal diet + 40 ppm avylamicin and 120 ppm monensin (positive control); basal diet + A. brasiliana extract (180 mL/200 kg of feed); basal diet + propolis extract (200 mL/200 kg of feed) and basal diet + linseed oil (2.5% replacing soybean oil). Propolis and A. brasiliana extracts improved broiler performance from 14 to 21 days, whereas linseed oil had no effect. The findings of this experiment revealed that A. brasiliana and propolis extracts can be used as antimicrobials, but further studies are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternanthera brasiliana; Animal performance; Broilers; Linseed oil; Propolis.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200009

Presence of antibodies against H5, H7 and H9 influenza A virus in wild birds in the State of São Paulo, Brazil
Provedor de dados: 89
Autores: Sousa,E de; Costa,T P; Werther,K; Durigon,EL; Araujo,J de; Ferreira,CS; Pinto,AA.
Although the natural reservoirs of the avian influenza (AI) virus have been extensively studied in many countries, there is a clear lack of information on this subject in South America, particularly in Brazil. The objective of this study was to conduct a serological survey for H5, H7 and H9 antibodies to AI-subtype viruses in wild birds in the state of São Paulo , Brazil. Serum samples were tested using the hemagglutination-inhibition assay. Out of the 31 wild birds sampled between January and December of 2006, seven (22.58%), were seropositive for H5, H7 and H9; four (12.90%) were seropositive for H5 and H7; 13 (41.94%), were seropositive only for H7; three (9.7%), were seropositive only for H9; and four (12.90%) were negative for all three hemagglutinin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian influenza virus; Brazil; Hemagglutination inhibition; Reservoir; Wild bird.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300001

Prevalence of Shiga Toxin-Producing and Enteropathogenic Escherichia coli in Wild and Pet Birds in Iran
Provedor de dados: 89
Autores: Koochakzadeh,A; Askari Badouei,M; Zahraei Salehi,T; Aghasharif,S; Soltani,M; Ehsan,MR.
ABSTRACT The aim of this study was to investigate the prevalence of Shiga toxin-producing Escherichia coli (STEC) and enteropathogenic E. coli (EPEC) strains and to identify the stx gene types in wild captive and companion birds. In total,657 E. coli isolates from 219 birds belonging to 38 different species were investigated for the presence of STEC and EPEC strains. It was shown that five birds (2.28%) carried strains positive for one or more of the virulence factors investigated. The results indicated that 1.8% (n=4) and 0.45% (n=1) of the birds carried STEC and EPEC strains, respectively. All STEC strains harbored the stx2f and eae genes and this finding reveals the role of other birds, in addition to pigeons, as reservoirs of STEC. The only EPEC strain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EPEC; STEC; Stx2f; Pet birds; Wild birds.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400445

Preventive, Behavioral, Productive, and Tissue Modification using Green Synthesized Selenium Nanoparticles in the Drinking Water of Two Broiler Breeds under Microbial Stress
Provedor de dados: 89
Autores: Ali,AA; Soliman,ES; Hamad,RT; El-Borad,OM; Hassan,RA; Helal,MS.
ABSTRACT A study was conducted to investigate the influence of selenium nanoparticles (SeNPS) and inorganic selenium supplementation in the drinking water on behavior, performance, and immunity of Arbor Acres® and Ross®308 broilers exposed to E. coli O157:H7 1.6 × 108 challenge at the 10th day of age. 180 one-day-old female broilers were divided into six groups, each with 30 chicks. G1 and G4 were supplied with 1 mL SeNPS 100 mg.L-1/L, G2 and G5 were supplied with 1 mL inorganic selenium 100 mg.L-1/L, and G3 and G6 were supplied with non-supplemented water. Where, G1, G2, and G3 were Arbor Acres®, while G4, G5, and G6 were Ross®308 broilers. A total of 1280 samples (160 sera, 160 intestinal swabs and 960 organ samples including liver, spleen, bursa, heart,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Broiler; Housing; Immunity; Nano-selenium.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100326

Probiosis: concepts and prospects
Provedor de dados: 89
Autores: Barbosa,Lima R; Figueiredo-Lima,DF; Givisiez,PEN; Rabello,CBV; Gonzales,E; Silva,JHV.
The use of probiotics in animal and human feeding has been a subject of increasing interest both for the academia and the industry, mostly due to their potential positive effects on health and profitability. However, the knowledge on the composition of bacterial gastrointestinal communities in humans and animals, as well as its respective nutritional requirements, is far from being elucidated. Due to the ban of the use of antibiotic growth promoters in animal feeds, there has been an increasing interest on the utilization of probiotics to improve animal intestinal health under commercial settings. However, the possibility of horizontal transference of antibiotic-resistant genes between probiotic bacteria and pathogenic species has become a concern of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Microbiota; Prebiotics; Probiotics; Phytogenics.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400001

Probiotic and prebiotic utilization in diets for free-range broiler chickens
Provedor de dados: 89
Autores: Pelícia,K; Mendes,AA; Saldanha,ESPB; Pizzolante,CC; Takahashi,SE; Garcia,RG; Moreira,J; Paz,ICLA; Quinteiro,RR; Komiyama,CM.
This work aimed to evaluate the effects of probiotic associated to prebiotic on performance, carcass and cut yields, qualitative traits of meat, development and score of lesions due to coccidiosis in digestive tract of broiler chickens raised in a free-range system during 85 days. One thousand, six hundred and ninety-six day-old male broiler chicks from naked-neck ISA S757-N Label Rouge line were used in a randomized block design with factorial scheme of 4x2 and four repetitions. The effect of four additive (1 - biologic promoter + coccidiosis vaccine; 2 - biologic promoter + anti-coccidiosis; 3 - chemical promoter + coccidiosis vaccine; 4 - chemical promoter + anti-coccidiosis) and two breeding systems from 35th day of age (one with no-access to pasture...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding system; Growth promoter; Intestine; Label Rouge; Symbiotic.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200005

Probiotic Lactobacilli Improved Growth Performance and Attenuated Salmonella Typhimurium Infection Via Jak/Stat Signaling in Broilers
Provedor de dados: 89
Autores: Shi,H; Deng,X; Deng,Q; Liu,Z; Liu,N.
ABSTRACT This study aimed to investigate the effect of Lactobacillus plantarum DPP8 and Lactobacillus acidophilus C7282 in feed supplementation on growth performance, Salmonella invasion, inflammation, and mediating signaling in broilers infected with Salmonella Typhimurium (S. Typhimurium). A total of 240 broilers at day old were randomly allocated into four groups, orally infected with S. Typhimurium and supplemented with individual or combined Lactobacilli DPP8 and C7282 at doses of 0 (control), 1010 (individual), or 2.0 × 1010 (combination) cfu/kg of diet for 21 d. The results showed that supplementing Lactobacilli improved (p&lt;0.05) feed intake and body weight gain and decreased (p&lt;0.05) S. Typhimurium load in the caecum, harder gland, spleen and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IFNγ; Interleukin; Salmonella Typhimurium load; TNFα.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100302

Probiotics for broiler chickens in Brazil: systematic review and meta-analysis
Provedor de dados: 89
Autores: Faria Filho,DE; Torres,KAA; Faria,DE; Campos,DMB; Rosa,PS.
This study evaluated the efficacy of probiotic utilization as growth promoters in broiler chicken feeding using systematic literature review and meta-analysis. Thirty-five studies were recovered by the systematic review, 27 of which met the following criteria to be included in the meta-analysis: (1) Brazilian studies published between 1995 and 2005; (2) probiotics administered in the diet without growth promoter; (3) results included performance data with the respective coefficient of variation. Meta-analysis have shown that the probiotics promoted better weight gain and feed conversion than the negative control (no antimicrobial) in the initial phase (1 to 20-28 days); nevertheless, results were similar in the total period (1 to 35-48 days). Weight gain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Intestinal microflora; Microorganism; Performance.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000200004

Processed Canola Meal Effects on the Traits of Egg, Fertility, Cecal Microbial Population and Carcass of Broiler Breeder Hens
Provedor de dados: 89
Autores: Dolatifard,A; Jafari,MA.
ABSTRACT The aim of the current research was to study the effect of canola meal processing methods on the traits of egg, fertility, cecal microbial population, and the carcass of broiler breeder hens. Canola meal was processed by fermentation and enzymatic hydrolysis methods, then was fed to the hens. Four hundred and fifty broiler breeder hens of Ross strain weighing 3300±150 g (40 weeks) were used for 12 weeks. A completely randomized design was used with 6 treatments (unprocessed, processed by Lactobacillus Plantarum, Bacillus Subtilis, Aspergillus Oryzae, Neurospora Sitophila, and Alcalase enzyme) and 5 replications. Fifteen hens were included in each pen. The data collected were analyzed using the LSmeans procedure of SAS software. The treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caecum; Fermentation; Fertility; Processing.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400308

Production and reproduction of egg- and meat-type quails reared in different group sizes
Provedor de dados: 89
Autores: Santos,TC; Murakami,AE; Fanhani,JC; Oliveira,CAL.
Egg- and meat-type quails were reared in groups of different sizes with a fixed female-to-male ratio of 2 to 1 and an area of 158 cm² per bird. The aim was to investigate the influence of group size on quail production and reproductive variables. To this end, 360 quails (180 meat and 180 egg-type quails) were assigned in a completely randomized experimental design to one of three treatments with ten replicates each. The treatments consisted of groups with nine, six, or three quails per cage. Birds were observed for three cycles of 14 days. Daily feed intake and feed conversion ratio were influenced (p &lt; 0.05) by group size in both types of quails. Quail type influenced (p &lt; 0.05) daily feed intake, feed conversion, and egg weight due to the typical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertility; Hatchability; Quail; Reproduction; Vitelline membrane.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100002

Production aspects of broiler breeders submitted to different drinker types
Provedor de dados: 89
Autores: Colvero,LP; Carrijo,AS; Garófallo,RG; Bernardi,R; Steffen,RPB; Stefanello,C.
The objective of this study was of evaluate the influence of different drinker types on the egg production, water intake, mortality, poultry litter relative humidity, egg weight, eggshell percentage, and egg specific gravity of broiler breeders. The experiment was carried out in a commercial farm with 37- to 44-wk-old broiler breeders. A randomized block experimental design, consisting of two treatments (bell or nipple drinkers) with four replicates of 4.000 females each, was applied. Data were submitted to analysis of variance, and means were compared by the test of Student-Newman-Keuls at 5% significance level. Birds submitted to nipple drinkers presented lower water intake (p&lt;0.05). There was no influence (p&amp;gt;0.05) of drinker type on egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intake; Gravity; Nipple drinkers; Bell drinker; Egg production.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100009

Production Indicators and Levels of Corticosterone in Pullets Treated with Beak-Trimming Protocols
Provedor de dados: 89
Autores: Vieira Filho,JA; Garcia,EA; Oba,E; Santos,TA; Molino,AB; Silva,AP; Pelícia,K; Paz,ICLA.
ABSTRACT The aim of this study was to compare the effects of beak trimming by hot blade or infrared radiation on production indicators and plasma levels of corticosterone in pullets. During the rearing phase, an entirely random delineation was used a 2 x 3 factorial design (two different techniques for beak trimming x 3 strains), a total of six treatments with six repetitions of 20 hens. In the growing phase, the previous treatments were divided into 12, with eight repetitions with seven hens. These treatments were then distributed in a factorial design of 2 x 3 x 2 (two methodologies for beak trimming during rearing phase x three strains x with or without beak trimming at ten weeks of age). In the rearing phase the birds treated by infrared radiation had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beak treatment; Infrared radiation; Poultry production; Stress; Welfare.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100063

Production of monoclonal antibodies for Avian Metapneumovirus (SHS-BR-121) isolated in Brazil
Provedor de dados: 89
Autores: Coswig,LT; Stach-Machado,DR; Arns,CW.
Avian Metapneumovirus (aMPV), also called Turkey Rhinotracheitis Virus (TRTV), is an upper respiratory tract infection of turkeys, chickens and other avian species. Five monoclonal antibodies (MAbs) were created against the Brazilian isolate (SHS-BR-121) of aMPV, MAbs 1A5B8; 1C1C4; 2C2E9 and 2A4C3 of IgG1 and MAb 1C1F8 of IgG2a. Four Mabs (1A5B8; 1C1C4; 2C2E9 and 2A4C3) showed neutralizing activity and three (1A5B8; 1C1C4 and 2A4C3) inhibited cellular fusion in vitro. These MAbs were used to investigate antigenic relationship among three strains (SHS-BR-121, STG 854/88 and TRT 1439/91) of aMPV subtypes A and B using cross-neutralization test. The results confirm that the monoclonal antibodies described can be used as a valuable tool in the epizootiological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian metapneumovirus; Brazil; Monoclonal antibodies; Neutralizing epitopes.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400008

Production performance and egg quality of quails (Coturnix japonica) during several periods of the day
Provedor de dados: 89
Autores: Pizzolante,CC; Faltarone,ABG; Garcia,EA; Saldanha,ESPB; Deodato,AP; Sherer,MR; Mendes,AA; Mori,C; Pelicia,K.
Three experiments were carried out to analyze the performance and egg quality of Japanese quails throughout the day when submitted to different lighting programs. In each experiment, birds were submitted to a period of 28 days for adaptation to the lighting program. During the following three days, each day - from 7 am to 7 pm or 9 pm - was divided into six or seven periods of two hours each, and the remaining hours corresponded to another single period. All birds were submitted to the same management practices, and received water and feed ad libitum. The experimental diet was formulated according to NRC (1994) standards. It was observed lower feed intake in the period of 9 pm to 7 am, and a higher incidence of lay from 3 pm to 7 pm, as opposite to hens,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periods of lay; Egg production; Lighting programs.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300002

Productive and Economic Performance of Broiler Chickens Subjected to Different Nutritional Plans
Provedor de dados: 89
Autores: Martins,JMS; Carvalho,CMC; Litz,FH; Silveira,MM; Moraes,CA; Silva,MCA; Fagundes,NS; Fernandes,EA.
ABSTRACT The objective of the study was to evaluate the effect of nutritional plans on the productive and economic performance of Hubbard Flex broiler chickens. A completely randomized experimental design was applied, consisting of five treatments. Treatments consisted of five different nutritional plans: a basal diet containing the nutrient and energy levels recommended by literature and designated reference diet; two diets containing 1.5% and 3% lower levels than the reference diet; and two diets containing 1.5% and 3% higher levels than the reference diet (-3%, -1.5%, reference plan, +1.5% and +3%). Feed intake (FI), body weight (BW), feed conversion rate (FCR), livability (L) and productive efficient index (PEI) were determined when broilers were 42...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrient density; Performance; Carcass yield; Economic viability.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200209

Productive consequences of fasting neonatal chicks of different genetic constitutions for growing
Provedor de dados: 89
Autores: Gonzales,E; Stringhini,JH; Dahlke,F; Cunha,WCP; Xavier,SAG.
The study was designed to evaluate the productive consequences of fasting neonatal chicks obtained from strains genetically divergent for growing. Four hundred eight chicks from three strains, 160 from breeders selected for high growth rate and excellent feed conversion ratio (Cobb 500), 160 from breeders not selected for fast growth (JA57), and 160 from a white egg layer strain (Hy-Line W98) were allotted in a 3 (strain) x 2 (fasting period - 8 and 36h after hatching) factorial arrangement with 5 replicates of 16 chicks each. Immediately after hatching, all chicks had similar (P&gt;0.05) relative yolk sac weights (14.13%, 14.50%, and 15.49% for Hy-Line, Cobb, and JA57, respectively). The yolk sac retractions were proportionally higher for Cobb and JA57...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicks; Fasting; Neonatal; Performance; Yolk sac.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400010

Productive Performance, Egg Characteristics and Hatching Traits of Three Chicken Genotypes under Free-Range, Semi-Intensive, and Intensive Housing Systems
Provedor de dados: 89
Autores: Ahmad,S; Mahmud,A; Hussain,J; Javed,K.
ABSTRACT The present study aimed at evaluating the effect of housing system on the live performance, egg quality, and hatching traits of three dual-purpose chicken genotypes. In total, 180 birds, comprising 48 pullets and 12 cockerels from each of three genotypes, were evaluated during the production phase (27-46 weeks). For this, 144 pullets and 36 cockerels were randomly picked from 18 treatment block groups were shifted to breeding coops, allotting 4 pullets to one cockerel. A completely randomized complete block design (RCBD) was employed. Three genotypes, purebred Naked Neck (NN) and two crosses Rhode Island Red × Naked Neck (RIR × NN = RNN) and Black Australorp × Naked Neck (BAL × NN = BNN), were compared. Intensive system (p&lt;0.0001) and BNN hens...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crossbred chickens; Egg quality; Hatching traits; Housing system; Live performance.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200341

PRODUCTIVE PERFORMANCE OF WHITE LEGHORN HENS BASED ON THE TYPE OF HOUSING DURING REARING: FLOOR VERSUS CAGE
Provedor de dados: 89
Autores: Itza-Ortiz,MF; Peraza-Mercado,G; Castillo-Castillo,Y; Rodriguez-Alarcon,CA; Vital-Garcia,C; Jaramillo-Lopez,E; Carrera-Chavez,JM.
ABSTRACT Poultry farmers in the southeastern of Mexico consider that the productivity of the hens that comes from rearing on floor has a higher productive performance than reared hens in cages, mainly due to higher percentage of egg laying and lower mortality. The aim of this study was to evaluate the productive performance of the laying hen in relation to the type of rearing. A total of 79680 pullets Bovans White of 17 weeks of age were housed in cages with five pullets cage-1 (405 cm2pullet-1). They were divided in two treatments according to their type of rearing (floor vs cage) with four replicates. The study period was from week 20 to week 40 of age. The variables evaluated were daily (%) and cumulative mortality (%), egg production (%), egg weight...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Feed intake; Productive performance; Mortality; Egg production; Rearing method.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300543

Productive, Qualitative, and Physiological Aspects of Layer Hens Fed with Propolis
Provedor de dados: 89
Autores: Belloni,M; Almeida Paz,ICL; Nääs,IA; Alves,MCF; Garcia,RG; Caldara,FR; Seno,LO.
ABSTRACT Laying hens reared under tropical conditions are usually under heat stress. Propolis is known for its pharmaceutical properties, such as increasing cell tolerance to hyperthermia, because of its antioxidants effects. This study aimed at evaluating the influence of different dietary propolis inclusion levels on the performance, egg quality, and bird surface temperature of layers. In this experiment 120 55-wk-old Isa Brown(r) layers were distributed according to a completely randomized experimental design into four treatments (0, 1, 2 and 3% dietary propolis inclusion levels), with three replicates of ten birds each. Performance and egg quality parameters, and birds' surface temperature were evaluated. Egg production, egg mass, feed intake, and feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Infrared thermography; Natural diet supplement.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400467

Productive traits of broiler chickens fed diets containing different growth promoters
Provedor de dados: 89
Autores: Pelicano,ERL; Souza,PA de; Souza,HBA de; Leonel,FR; Zeola,NMBL; Boiago,MM.
This study evaluated the effect of different probiotics and prebiotics on the performance of broilers. One-day-old male broiler chicks from the Cobb strain (n=1,260) were randomly distributed in a 3 x 3 factorial arrangement, considering 3 probiotics and 3 prebiotics sources. Nine treatments with 4 repetitions and 35 birds per parcel were used. The results showed that there was no influence of treatment on feed intake at the different rearing phases. Better weight gain (p&lt;0.05) was seen when diet was supplemented with the phosphorylated mannanoligosaccharide-based prebiotic (MOS) compared to diets without prebiotics. Feed conversion of birds fed diets with probiotics and prebiotics was better than feed conversion of birds not receiving such additives....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chickens; Performance; Prebiotics; Probiotics.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300008

Profile of Serum Metabolites and Proteins of Broiler Breeders in Rearing Age
Provedor de dados: 89
Autores: Rezende,MS; Mundim,AV; Fonseca,BB; Miranda,RL; Oliveira Jr,W; Lellis,CG.
ABSTRACT The excellence of modern broiler production is based on the genetic improvement of broiler strains for high growth rate and high egg production, associated with technological developments in nutrition, management, and health. Over the last decades, the clinical biochemistry of broilers has been studied to determine serum biochemical component values; however, there are still many knowledge gaps on factors that determine changes in these values. In this study, the serum lipid and protein profiles of 4-week-old male and female Cobb broiler breeders were evaluated. Blood samples were collected on a commercial farm located in the city of Uberlândia, MG, Brazil. The following parameters were evaluated: total protein, albumin, globulin, albumin to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochemical profile; Serum; Poultry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400583

Proposal of a Standard for the Condemnation for Turkey Carcasses Due to Fowlpox
Provedor de dados: 89
Autores: Ferreira,BC; Couto,RM; Ecco,R; Coelho,HE; Rossi,DA; Beletti,ME; Silva,PL.
ABSTRACT This study aimed at proposing a new technical criteria for condemnation of turkey carcasses due to fowlpox in turkeys as a contribution for the work of the Brazilian Federal Meat Inspection Service. Skin samples from 30 carcasses of a flock of 840 turkeys (Meleagris gallopavo), previously vaccinated for fowlpox and slaughtered in June 2013, were collected. Samples were submitted to histological examination under light microscopy. The virus was identified using standard PCR techniques. The main histological findings were hyperplasia and hydropic degeneration of the epithelium and the presence of intracytoplasmic eosinophilic inclusion bodies. PCR results yielded 83.3% positive and 16.7% negative samples. Fowlpox virus is species specific, and there...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Condemnations; Fowlpox; Processing plant; SIF.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200225

Protease Supplementation under Amino Acid Reduction in Diets Formulated with Different Nutritional Requirements for Broilers
Provedor de dados: 89
Autores: Dessimoni,GV; Dalólio,FS; Moreira,J; Teixeira,LV; Bertechini,AG; Hermes,RG.
ABSTRACT This study aimed to evaluate the effect of different reductions in digestible amino acids content (lysine, methionine, and threonine), according to two nutritional requirements in corn, soybean meal, and meat and bone meal based diets, with protease supplementation, on performance parameters and carcass characteristics. A total of 1080 day-old chicks, male, Cobb 500, were allotted to a completely randomized design, in a factorial arrangement 3 x 2, three reductions in digestible amino acids content (lysine, methionine, and threonine) and two nutritional requirements (Rostagno et al. 2005 and Cobb-Vantress Guidelines 2008), and all diets were supplemented with protease (200 ppm) with 6 replicates of 30 birds per pen. There was no significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Performance; Nutritional recommendations; Monocomponent protease; Carcass characteristics; Poultry.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100305

Protein levels and environmental temperature effects on carcass characteristics, performance, and nitrogen excretion of broiler chickens from 7 to 21 days of age
Provedor de dados: 89
Autores: Faria Filho,DE; Rosa,PS; Vieira,BS; Macari,M; Furlan,RL.
This trial was conducted to evaluate the utilization of low-protein diets formulated based on the ideal protein concept for broiler chickens from 7 to 21 days of age reared at different environmental temperatures. Nine hundred male Cobb-500® chickens were used. At day seven chicks were distributed according to a completely randomized design in a 3 x 3 factorial with four replications of 25 birds each. It was used three crude protein levels in the diet (21.5; 20.0 and 18.5%) and three environmental temperatures (low, thermoneutral and high). The performance, carcass characteristics (yield and chemical composition), and nitrogen ingestion and excretion were assessed. There was no significant interaction among the factors for the evaluated variables....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler Chicks; Environmental temperature; Ideal protein; Nitrogen excretion; Performance.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400009

Protein, methionine+cystine and lysine levels for Japanese quails during the production phase
Provedor de dados: 89
Autores: Garcia,EA; Mendes,AA; Pizzolante,CC; Saldanha,ESPB; Moreira,J; Mori,C; Pavan,AC.
An experiment was conducted at Faculdade de Medicina Veterinária e Zootecnia/Unesp - Botucatu for 168 days to evaluate the effects of protein, Met + Cys and lysine diet levels on egg production and egg quality of laying Japanese quails. Quails with 42 days of age were reared in a completely randomized design. There were 1,944 quails distributed in four replicates of 27 birds per pen, according to a factorial 3x3x2 with three crude protein levels (16, 18 and 20% CP), three Met + Cys levels (0.700; 0.875 and 1.050%) and two lysine levels (1.100 and 1.375%). Birds fed diets with 18 and 20% CP had higher feed intake and egg production than those fed diets with 16% CP. There was significant interaction (p&lt;0.05) between protein and Met + Cys levels on egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Egg quality; Lysine; Methionine+Cystine; Protein; Quails.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100002

Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods
Provedor de dados: 89
Autores: Soares,R da TRN; Fonseca,JB; Santos,AS de O dos; Mercandante,MB.
Two completely randomized trials were conducted to estimate protein requirements of Japanese quails during the rearing and laying periods. In each trial, 150 quails were distributed in five treatments with five repetitions. Crude protein levels in the rearing period were 18, 20, 22, 24 and 26% (Trial 1) and during the laying period were 16, 18, 20, 22 and 24% (Trial 2). A quadratic effect of protein level was observed on weight gain from seven to 35 days (Trial 1). There were no effects of protein levels on feed intake and feed conversion. Protein levels in experimental diets during rearing had no effect on egg production up to 63 days. However, laying was delayed and variation in body weight was greater in quails fed lower protein levels. In Trial 2, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Egg production; Japanese quails.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200010

Proteína Bruta e Proteína Ideal para Frangos de Corte no Período de 1 a 21 Dias de Idade
Provedor de dados: 89
Autores: Araújo,LF; Junqueira,OM; Araújo,CSS; Laurentiz,AC; Almeida,JG; Serrano,PP.
Dois experimentos foram realizados com o objetivo de avaliar o desempenho de frangos de corte no período de 1 a 21 dias alimentados com dietas formuladas nos conceitos de proteína bruta e proteína ideal. No primeiro experimento, foram utilizados 400 pintos machos de um dia de idade da linhagem Cobb, distribuídos em delineamento inteiramente casualizado, com 2 tratamentos (proteína total e proteína ideal) e 5 repetições de 40 aves cada. No segundo experimento, foram utilizados 800 pintos, 400 machos e 400 fêmeas, em arranjo fatorial 2x2 (2 formulações - proteína bruta e proteína ideal e 2 sexos) com 4 tratamentos e 5 repetições de 40 aves cada. As dietas foram formuladas atendendo às exigências estabelecidas pela DEGUSSA (1997). Aos 21 dias, foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Frangos de corte; Programa de alimentação; Proteína ideal.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200004

Proximate composition and meat quality of broilers reared under different production systems
Provedor de dados: 89
Autores: Souza,XR; Faria,PB; Bressan,MC.
In this study, the physical-chemical characteristics and proximate composition of the meat of of two strains of broilers (Paraíso Pedrês and Máster gris plumé - Super Pesadão, utilized for semi-intensive rearing) and Cobb® strain, utilized in intensive rearing systems) were evaluated. Differences related to strain and sex (males and females) were studied. Cobb® broilers were slaughtered at 45 days and the other strains at 85 days. The following characteristics were evaluated in breast and thigh meat: moisture, protein, ether extract, ashes, color (CIEL*a*b*), final pH, cooking loss (CL) and shear force (SF). Bird strain and sex influenced breast color parameters, with Cobb® presenting higher yellowness (b*) and redness (a*) means, whereas females had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Free-range chickens; Meat quality; Proximate composition.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100003

Qualidade Higiênico-Sanitária e Demanda de Cloro da Água de Dessedentação de Galinhas de Postura Coletadas em Bebedouros Tipo Nipple e Taça
Provedor de dados: 89
Autores: Amaral,LA; Nader Filho,A; Isa,H; Barros,LSS.
O objetivo deste estudo foi avaliar a influência de dois tipos de bebedouros nipple e taça, utilizados na dessedentação de aves de postura e o incremento da demanda de cloro na água oferecida pelos dois tipos de bebedouros estudados. Foram realizadas as contagens de coliformes totais, coliformes fecais, Escherichia coli, estreptococos fecais e microrganismos mesófilos. Os resultados obtidos figuraram que as amostras de água dos reservatórios, de ambos os bebedouros, apresentaram-se contaminadas microbiologicamente antes de passarem pelos bebedouros. A contaminação por bactérias de poluição fecal foi maior nas amostras colhidas nos bebedouros tipo taça, assim como eles foram responsáveis por um maior acúmulo de matéria orgânica, tendo então uma elevada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Água; Microbiologia; Nipple; Taça; Cloro.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300007

Qualitative and Quantitative Analysis of Salmonella spp. in Broilers Technological Processing and Determination of a Performance Objective (PO) for Frozen Chicken Breast
Provedor de dados: 89
Autores: Machado,SCA; Pereira,VLA; Aquino,MHC; Giombeli,A; Rodrigues,DP; Nascimento,ER.
ABSTRACT The present study investigated the frequency, level of contamination and serotyping of Salmonella strains isolated from broiler flocks in different processing sites and the fulfillment of a Performance Objective (PO) in frozen chicken breasts, as a risk assessment to measure the efficacy of prevention and control programs applied to reduce the risk of Salmonella spp. in raw poultry meat that contribute to reach food safety and public health goals. From 1,800 samples of cloacal swabs, carcasses before and after immersion chilling and frozen breasts derived from 20 broiler flocks slaughtered at two processing plants located in the mid-west and southern regions of Brazil, 278 samples were positive for Salmonella spp. by polymerase chain reaction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Chicken meat; Salmonella; Serotype; Enumeration; Performance objective (PO).
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100328

Quality assessment of corn batches received at a feed mill in the brazilian cerrado
Provedor de dados: 89
Autores: Rodrigues,SIFC; Stringhini,JH; Ribeiro,AML; Pontalti,GC; McManus,CM.
This study aimed at investigating factors that contribute to changes in the quality of corn used in compound poultry feeds. Samples were collected from 6488 bulk cargos received at a feed mill located close to Brasília, Brazil. The parameters studied were divided into two groups: those related to corn chemical composition, including crude protein (% CP), ether extract (% EE), crude fiber (% CF), nitrogen-free extract (% NFE), and estimated metabolizable energy (ME), and corn physical characteristics, including density, moisture, and grain physical damage. High coefficients of determination (R²) and low coefficients of variation (CV) were determined for the chemical and physical parameters. The analysis of variance showed low to medium R². Month, year,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical composition; Grain damage; Corn density; Nutritional value; Physical traits.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300002

Quality assessment of marketed eggs in bassekabylie (Algeria)
Provedor de dados: 89
Autores: Moula,N; Ait-Kaki,A; Leroy,P; Antoine-Moussiaux,N.
Quality variations in retail eggs are widely reported. This study aims at assessing the quality of eggs according to the marketing channel in the department of Bejaia (Algeria). In spring and summer 2012, 3330 eggs were bought in 30 stores divided into 3 categories: 10 supermarkets (1146 eggs), 10 public markets (1048 eggs), and 10 shops (1136 eggs). Egg weights differed significantly between marketing channels with 58.9±0.14, 61.2±0.13 and 62.8±0.13 g for public markets, shops and supermarkets, respectively (p&lt;0.001). Although shell thickness was similar for all marketing channels, the proportion of damaged eggs was higher in public markets (9.0%), intermediate in food shops (7.3%) and lower in supermarkets (5.7%; p&lt;0.05). The yolk/albumen ratio was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bejaia; Consumer channels; Egg quality; Egg prices; Marketed table eggs; Egg grades.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400015

Quality of Eggs from Layers Reared under Alternative and Conventional System
Provedor de dados: 89
Autores: Popova,T; Petkov,E; Ayasan,T; Ignatova,M.
ABSTRACT The study aimed to compare and assess some of the quality characteristics (morphology, colour of the yolk, total carotenoid content and fatty acid profile) of eggs obtained from hens reared conventionally or in alternative system having access to pasture. Twenty eggs of each rearing system were analysed for the above characteristics. The eggs obtained from the layer reared under the alternative system were significantly heavier than the conventional ones, displayed higher diameters of the albumen and albumen index, as well as increased diameter and weight of the yolk. On the other hand, their shell thickness and Haugh units were lower when compared to the eggs from conventionally reared hens. The colour of the eggs from the alternative system was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Alternative system; Conventional rearing; Colour; Fatty acids.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100317

Quality parameters of the tibiae and femora of ostriches
Provedor de dados: 89
Autores: Almeida Paz,ICL; Mendes,AA; Balog,A; Almeida,ICL; Martins,MRFB; Vulcano,LC; Komiyama,CM.
An experiment was carried out to establish mean bone quality values of the tibiae and femora of ostriches and to evaluate these bones. The right leg bones of 10 males and 10 female African Black ostriches were evaluated. Birds were radiographed immediately after slaughter (during bleeding), with the aid of a portable X-ray apparatus. The obtained radiographs were scanned and bone mineral density means were obtained using software. Bone strength, Seedor index, and dry matter percentage were evaluated and correlated to weight gain during the finishing period (3-13 months of age). Mean values of the evaluated bone quality traits, not previously found in literature, were established. There were no significant differences between males and females in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bones; Bone mineral density; Bone quality; Bone strength; Ostriches.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300005

Raoultella ornithinolytica Isolation in Cloacal Microbiota of Tinamus solitarius: Preliminary Data
Provedor de dados: 89
Autores: Marietto-Gonçalves,GA; Lima,EL; Nagayoshi,BA; Tonin,AA; Knöbl,T; Adreatti Filho,RL.
ABSTRACT Raoultella ornithinolytica is a gram-negative aerobic bacterium belonging to Enterobacteriaceae family, an emerging pathogen that causes several pathogenic conditions in man, with little veterinary importance; however, its identification is underestimated by conventional laboratory techniques. The present study reports the identification of R. ornithinolytica in Tinamus solitaries, during a routine sanitary evaluation of aerobic enterobacteria in cloacal microbiota of birds belonging to the Güira Oga Center, Puerto Iguazu, Argentina. The sample was preliminary classified as Klebsiella spp.; however, after the use of the MALDI-TOF MS technique it was identified as R. ornithinolytica. The sample was submitted to an antimicrobial susceptibility test,...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Raoultella; Enterobacteria; Microbiota; Wild birds; Public Health.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200189

Recovery of Salmonella Gallinarum in the Organs of Experimentally-Inoculated Japanese Quails (Coturnix coturnix)
Provedor de dados: 89
Autores: Silva,RC Rocha e; Cardoso,WM; Teixeira,RSC; Horn,RV; Cavalcanti,CM; Almeida,CP; Sampaio,FP; Albuquerque,AH; Lopes,ES; Gomes Filho,VJR; Bezerra,WGA; Vasconcelos Filho,FSL; Freitas,ML.
ABSTRACTSalmonellosis is an infection caused by specific or non specific serotypes of theSalmonella genus, responsible for losses in the poultry industry. Fowl typhoid, caused by S. Gallinarum (SG) is important because it causes elevated mortality in adult birds, leading to economic losses in the poultry industry. This study aimed at quantifying the number of viable SG cells in the liver, spleen, lung, cecum, and reproductive tract (ovary and testicles) of experimentally inoculated Japanese quails (Coturnix coturnix), as well as SG shedding in their feces. One hundred and two Japanese quails, with four months of age at the beginning of the experiment, were used. The birds were inoculated with three bacterial cultures containing different concentrations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cloacal swabs; Gallinaceous; Organs; Reisolation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300281

Redução de Bactérias Indicadoras de Poluição Fecal em Estrume de Aves de Postura Tratados por Biodigestão Anaeróbia
Provedor de dados: 89
Autores: Amaral,LA1; Schocken,DBL; Lucas Jr.,J.
A digestão anaeróbia pode auxiliar na redução de patógenos e poluição ambiental pela redução dos sólidos e microrganismos de presença indesejável nos efluentes. No presente trabalho objetivou-se a avaliação da redução de microorganismos indicadores de contaminação fecal através do processo de biodigestão anaeróbica de dejetos de aves de postura em biodigestores contínuos, operados em diferentes tempos de retenção hidráulica (TRH): 40, 30, 25, 20 e 15 dias, e biodigestores de batelada com e sem a utilização de inóculo. Foi observada nos dois tipos de biodigestores uma redução acima de 99,0% para os coliformes totais e fecais, mostrando a eficiência do processo. Os resultados obtidos no presente trabalho mostram que o processo de biodigestão anaeróbia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dejetos avícolas; Biodigestão anaeróbia; Poluição fecal; Saneamento rural.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100004

Reduced Nutrient Excretion and Environmental Microbial Load with the Addition of a Combination of Enzymes and Direct-Fed Microbials to the Diet of Broiler Chickens
Provedor de dados: 89
Autores: Praes,MFFM; Lucas Junior,J; Duarte,KF; Sorbara,JOB; Matos Junior,JB; Sgavioli,S; Domingues,CHF; Garcia,RG; Hermes,RG.
Abstract This study evaluated the effects of the dietary inclusion of an enzyme blend and a direct-fed microbials in broiler diets on litter production and quality. In total, 900 Cobb 500(r) broiler chicks were distributed according to a completely randomized design into 4 treatments and 9 replicates of 25 birds each. Broilers were reared from 1 to 42 days of age. The treatments consisted of the following diets: NC: negative control; DFM: NC + 500 ppm of direct-fed microbials product (DFM), containing Bacillus subtilis and Bacillus licheniformis; ENZ: diet formulated with an enzyme blend (20 ppm phytase, 200 ppm protease and 200 ppm of xylanase); DFM+E: ENZ + DFM. Birds and litter were weighed at the start and end of the rearing period, for litter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Waste ratio; Total and thermotolerant coliforms; Phosphorus; Nitrogen; Potassium.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100125

Relationship between color and tannin content in sorghum grain: application of image analysis and artificial neural network
Provedor de dados: 89
Autores: Sedghi,M; Golian,A; Soleimani-Roodi,P; Ahmadi,A; Aami-Azghadi,M.
The relationship between sorghum grain color and tannin content was reported in several references. In this study, 33 phenotypes of sorghum grain differing in seed characteristics were collected and analyzed by Folin-Ciocalteu method. A computer image analysis method was used to determine the color characteristics of all 33 sorghum phenotypes. Two methods of multiple linear regression and artificial neural network (ANN) models were developed to describe tannin content in sorghum grain from three input parameters of color characteristics. The goodness of fit of the models was tested using R², MS error, and bias. The computer image analysis technique was a suitable method to estimate tannin through sorghum grain color strength. Therefore, the color quality...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Image analysis; Neural network model; Sorghum grain; Tannin.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100010

Relationship between ecological concepts and biosafety in broiler breeder farms
Provedor de dados: 89
Autores: Santos,CA; Falconi,FA.
The entrance of poultry products into the trade world requires changes in the configuration of these products, such as programs that ensure their quality and biosafety for the consumers. This article aims at presenting new perception on poultry biosafety programs in broiler breeder farms from an ecological perspective, making these programs more efficient and cost-effective, i.e., more competitive. Using literature review, some convergences were found between ecology concepts and biosafety programs. One of these convergences is understanding the farm as an open ecosystem, integrating through adaptation the natural environment with the exotic environment. This also allows understanding how the production area interacts with the environment as to energy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian biosafety; Aviculture; Broiler house; Ecological modeling; Ecology.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300002

Renal Dose Dopamine Mediates the Level of Aquaporin-2 Water Channel (Aqp2) in Broiler Chickens
Provedor de dados: 89
Autores: Chang,Z; Zhang,H; Wu,X; Nabi,F; Rehman,MU; Yuan,X; Mehmood,K; Zhou,D.
ABSTRACT Aquaporin 2 (AQP2) is a small protein located in the collecting tubules of kidneys; it plays an important role in the concentration and production of urine. The aim of this study was to determine the expression level of the AQP2 gene in the kidney of broiler chickens after the administration of renal­dose dopamine. Broiler chickens (25 days-old) were randomly divided into two groups (n=20 per group): intravenous administration of saline solution (control group) or renal-dose dopamine (dopamine group). The expression and localization of the AQP2 gene were evaluated by real-time quantitative polymerase chain reaction (RT-qPCR) and immunohistochemistry (IHC), respectively. The protein level of AQP2 was analyzed by western blot analysis. The dopamine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AQP2; Renal dose dopamine; Kidney; Broiler chickens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300387

Replacement of Animal Fat by Canola Oil in Chicken Meatball
Provedor de dados: 89
Autores: Vieira,ASP; Souza,XR; Rodrigues,EC; Sousa,DC.
ABSTRACT This work aimed to develop chicken meatballs with five levels of animal fat replacement by canola oil and to evaluate the product’s behavior during 120 days of storage. For that, analyzes were performed in the centesimal composition, fatty acid profile, shelf life and sensory parameters. The centesimal composition of the product did not present significant difference (p&gt;0.05) between the treatments. However, canola oil addition improved the lipid profile, atherogenic and thrombogenic indexes, and the ratios of PUFAs/SFAs (0.91 to 1.61) and n6/n3 (12.63 to 3.74) in the products. Animal fat replacement and storage time also reduced meatballs Aw and pH. No differences in texture between treatments were detected after 30 days of storage. The lipid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken product; Centesimal composition; Shelf life; Sensory acceptance; Vegetable oil.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300305

Reproductive and behavioral aspects of red-winged tinamous (Rhynchotus rufescens) in groups with different sex ratios
Provedor de dados: 89
Autores: Cromberg,VU; Stein,MS; Boleli,IC; Tonhati,H; Queiroz,SA.
The aim of this research study was to evaluate the reproductive performance of tinamous submitted to five different male:female ratios. The study was carried out with 72 birds in a randomized experimental design with 4 replications. Tinamous were housed in cages, using the ratios of one (1:1), two (2:1), three (3:1) and four (4:1) females per male, and also one male was housed with three females individually (3R:1), in a rotational system. Reproductive records of the breeding season from September 2004 to March 2005 were used. The reproductive traits studied were: number of eggs laid, fertility, and percentage of eggs damaged and cracked by pecking. Nonparametric analyses of these traits were performed using Kruskal-Wallis test. Two replications of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agonistic behavior; Domestication; Dominance; Laying birds; Tinamous.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300004

Reproductive characteristics of captive greater rhea (Rhea americana) males reared in the state of São Paulo, Brazil
Provedor de dados: 89
Autores: Góes,PAA; Cavalcante,AK da S; Nichi,M; Perez,EG de A; Barnabe,RC; Barnabe,VH.
Rheas (Rhea americana) belongs to the ratite group. Considering the commercial significance of this birds, some techniques, such as semen collection, were standardized. In this study, 107 male rheas (3 to 4 years of age) reared in commercial farms in the state of São Paulo, Brazil, were used. Semen was collected during the breeding and off-breeding seasons of 2001, 2002, and 2003. Bird hierarchical behavior was observed. Birds were restrained performed using a box and a black hood. Semen was collected by digital pressure on the base of the phallus, which size was measured, and the presence or absence of spiral shape was observed. Immediately after collection, semen samples were evaluated for volume, motility, sperm concentration, and morphology. In a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Captive animals; Semen collection; Rhea.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100009

Requirement of Digestible Methionine + Cystine to Molted Laying Hens
Provedor de dados: 89
Autores: Oliveira Filho,PA; Cruz,FGG; Rufino,JPF; Silva,EM; Viana Filho,GB; Silva,FM.
ABSTRACT The present study aimed to determine the ideal requirement of digestible methionine + cystine to molted laying hens. The experimental period lasted 105 days, divided into five periods of 21 days. 144 Hisex White laying hens with 84 weeks-of-age were used. The experimental design was completely randomized with treatments constituted for six levels of digestible methionine + cystine (0.45, 0.50, 0.55, 0.60, 0.65, and 0.70%) in the diets, with four replicates of six birds each. Data collected were evaluated by polynomial regression at 5%. There was a significant effect (p&lt;0.05) of digestible methionine + cystine on feed intake, energy intake, protein intake, egg production, and egg mass. Internal egg quality presented positive linear effect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Egg quality; Hen; Performance; Serum.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400323

Requirement of Digestible Sulfur Amino Acids in Laying Hens Fed Sorghum- and Soybean Meal-Based Diets
Provedor de dados: 89
Autores: Gomez,RS; Angeles,ML.
ABSTRACT Two experiments were done to evaluate the effect of increasing levels of dietary digestible methionine (Met) and Met:cysteine (Met:Cys) ratio on the productivity of Hy-Line W-36 laying hens fed sorghum- and soybean meal-based diets. In Exp. 1, 160 hens from 68 to 75 weeks of age were assigned to four dietary levels of digestible Met (0.20 0.24, 0.28 and 0.32%). The digestible total sulfur amino acids:Lysine (TSAA:Lys) ratios were: 62, 68, 76 and 84%. In Exp. 2, 192 hens from 76-83 weeks of age were assigned to four dietary digestible Met:Cys ratios (160, 116.7, 85.7 and 62.5%). The digestible TSAA:Lys ratio was kept constant across diets (80%). Results were subjected to ANOVA and linear regression analyses. In Exp. 1, optimal egg production, egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying hens; Requirements; Methionine; Cysteine; Productivity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200231

Requirement of Sodium to Molted Laying Hens
Provedor de dados: 89
Autores: Melo,RD; Cruz,FGG; Melo,LD; Feijó,JC; Rufino,JPF; Brasil,RJM; Oliveira Fº,PA; Silva,FMF.
ABSTRACT The objective of this study was to determine the ideal requirement of sodium to molted laying hens. The experimental period lasted 105 days, divided into five periods of 21 days. Hisex White laying hens 150 with 84 weeks-of-age were used. The experimental design was completely randomized in a factorial scheme (5x3) with treatments constituted by five levels of sodium (0.10, 0.15, 0.20, 0.25, and 0.30%) in the diets, and three postmolt stages (early = 21 days, medium = 63 days, and final = 105 days). Performance and egg quality results were evaluated by Tukey test at 5%. Eggshell resistance and weight gain results were evaluated by polynomial regression at 5%. Except the yolk height, all performance and egg quality variables were affected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Eggshell; Performance; Sodium; Weight gain.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100325

Research on eggshell structure and quality: an historical overview
Provedor de dados: 89
Autores: Hunton,P.
The eggshell is an important structure for two reasons. Firstly it forms an embryonic chamber for the developing chick, providing mechanical protection and a controlled gas exchange medium. Secondly it is a container for the market egg, providing protection of the contents and a unique package for a valuable food. The superficial structure of the shell has been known for over 100 years. The shell consists of 97% calcium carbonate, and this is provided to the hen in the diet. However, the chemical must be broken down in the digestive system and then re-synthesized in the shell gland to form the shell. This results in a turnover of blood Ca of ~ 100 times each 24 hours. Provision of calcium to layers has been researched at length, but the key work, conducted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Eggshell; Eggshell proteins; Shell structure.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200001

Resistência ao Estresse Calórico em Frangos de Corte de Pescoço Pelado
Provedor de dados: 89
Autores: Silva,MAN; Silva,IJO; Piedade,SMS; Martins,E; Coelho,AAD; Savino,VJM.
Aves de duas linhagens, sendo uma portadora do gene pescoço pelado (Na_) que determina redução no empenamento, e outra não portadora, com empenamento normal (nana), foram submetidas a estresse térmico gradativo (38, 40 e 42ºC), em câmara climática, nas idades de 28, 35 e 42 dias, com o intuito de se verificar a resistência ao estresse térmico. Foram verificadas diferenças significativas entre a temperatura retal média e a taxa respiratória média da linhagem de empenamento normal quando comparada com a linhagem de pescoço pelado, em todas as idades e períodos de estresse. Foram verificados valores mais altos das aves de empenamento normal, demonstrando a influência do conjunto temperatura de estresse térmico e idade. Pôde-se constatar que houve diferença...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estresse térmico; Resistência; Frango de corte; Pescoço pelado.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100002

Respiratory and Other Health Risks among Poultry-Farm Workers and Evaluation of Management Practices in Poultry Farms
Provedor de dados: 89
Autores: Hamid,A; Ahmad,AS; Khan,N.
ABSTRACT The current study was conducted on eight poultry farms in Lahore and Sheikhupura to monitor environmental conditions, determine workers’ health status and assess the implementation of standard management practices. Environmental monitoring, a health questionnaire survey and a respiratory function test were carried out. Seventy-one respondents were selected for the health assessment survey and lung function test. The results showed that the evaluated air-quality parameters, except for temperature and humidity, were well below the permissible occupational limits. Maximum temperature recorded was 32.75 ºC, while the highest humidity level was 85.5%. Farms were shown to be compliant with standard guidelines and management practices. The workers’...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Best management practices; FEV/FVC; Occupational hazards; Poultry farms; Spirometry.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100111

Respiratory risks in broiler production workers
Provedor de dados: 89
Autores: Alencar,M do CB de; Nääs,I de A; Gontijo,LA.
There are many situations that involve health risks to the Brazilian rural worker, and animal production is just one of them. Inhalation of organic dust, which has many microorganisms, leads in general to respiratory allergic reactions in some individuals, "asthma-like syndrome", and mucous membrane inflammation syndrome, that is a complex of nasal, eye, and throat complaints. Furthermore, workers might have farmer's hypersensitivity pneumonia, that is a respiratory health risk along the years. The objective of this study was to evaluate the potential pulmonary health risks in poultry production workers in the region of Curitiba, PR, Brazil. Interviews using a pre-elaborated questionnaire with 40 questions were made with 37 broiler production workers,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Occupational health; Pulmonary diseases; Rural worker; Poultry production.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100004

Response of broiler chickens to different dietary crude protein and feeding regimens
Provedor de dados: 89
Autores: Oyedeji,JO; Umaigba,JO; Okugbo,OT; Ekunwe,PA.
Five isocaloric (3200kcal/kg) diets were used in an experiment designed to investigate the effects of dietary crude protein (CP) and feeding regimens on broiler performance. Day-old broilers were randomly distributed into four groups using a completely randomized design. Each group was replicated three times with ten broiler chicks per replicate. The experiment lasted for eight weeks. Broilers in group 1 received 23% CP from 0 to 3 weeks, 20% CP from 3 to 6 weeks and 18% CP from 6 to 8 weeks, while broilers in group 2 received 23% CP between 0 and 6 weeks and 18% CP between 6 and 8 weeks. Besides, broilers in group 3 were fed 23% CP from 0 to 4 weeks and 16% CP from 4 to 8 weeks, whereas group 4 was given 18% CP from 0 to weeks. Water was supplied ad...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Broiler performance; Crude protein; Feeding regimens; Protein.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300005

Response of broilers to practical diets with different metabolizable energy and balanced protein concentrations
Provedor de dados: 89
Autores: Aftab,U.
Experiment was conducted to study the effect of Metabolizable Energy (ME) and Balanced Protein (BP) on the performance of 1- to 35-day-old male and female Hubbard x Hubbard broilers. Set in a factorial arrangement, dietary treatments involved 3 levels of ME (2650, 2750, or 2850 kcal per kg diet) and 4 levels of Balanced Protein (expressed as 8.4, 9.0, 9.6, or 10.2 g Standardized Ileal Digestible lysine per kg). Each diet was fed to 5 replicate pens of 17 chicks. Dietary ME and BP did not interact for any of the parameters studied (p&gt;0.05). The main effect of ME was significant (p&lt;0.05) for feed intake, body weight, and feed conversion ratio at all ages. Highest ME (2850 kcal) resulted in 35 day feed intake and feed conversion ratio that was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Balanced protein; Broilers; Metabolizable energy.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300005

Response surface models to predict broiler performance and applications for economic analysis
Provedor de dados: 89
Autores: Faria Filho,DE; Rosa,PS; Torres,KAA; Macari,M; Furlan,RL.
A study was carried out to elaborate response surface models using broiler performance data recovered from literature in order to predict performance and elaborate economic analyses. Nineteen studies published between 1995 and 2005 were retrieved using the systematic literature review method. Weight gain and feed conversion data were collected from eight studies that fulfilled the pre-established inclusion criteria, and a response surface model was adjusted using crude protein, environmental temperature, and age as independent variables. The models produced for weight gain (r² = 0.93) and feed conversion (r² = 0.85) were accurate, precise, and not biased. Protein levels, environmental temperature and age showed linear and quadratic effects on weight gain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Environmental temperature; Regression analysis; Response surface; Slaughter age; Systematic literature review.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200009

Resultados de Pesquisa em Nutrição de Aves no Brasil: Resumo dos Ultimos 5 anos
Provedor de dados: 89
Autores: Nunes,RV; Nascimento,AH; Albino,LFT; Rostagno,HS.
Foi realizada uma revisão bibliográfica sobre as pesquisas brasileiras na área de nutrição avícola, entre 1994 a l999. Nesse período, foi publicado um total de 496 trabalhos, com uma média de 82,7 trabalhos/ ano. Os trabalhos na área de nutrição revelaram que 64,52% foram realizados com frangos de corte; 24,19%, com poedoiras e aves de reposição; 3,93%, com matrizes pesadas; e 7,66%, com outras aves. Com relação às publicações em forma de resumos expandidos, foram publicados 226 e 163 resumos, nos Anais das Reuniões Anuais da Fundação APINCO de Ciência e Tecnologia Avícolas e da Sociedade Brasileira de Zootecnia, respectivamente. Na Revista da Sociedade Brasileira de Zootecnia e no Arquivo Brasileiro de Medicina Veterinária e Zootecnia foram publicados,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicultura; Nutrição; Publicações.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200002

Resveratrol Attenuates LPS-induced Apoptosis via Inhibiting NF- κ B Activity in Chicken Peripheral Lymphocyte Cultures
Provedor de dados: 89
Autores: Zhang,CY; Huang,J; Kang,XT.
ABSTRACT This study aims to investigate whether resveratrol (RES) could inhibit NF-κB activity and protect in vitro cultured chicken lymphocytes from apoptosis induced by continuous LPS stimulation. Blood lymphocytes of chickens were collected and cultured. LPS was added to the samples of treatment group, while the same volume of normal saline (NS) was supplemented to those of the control group. In the treatment groups, four different concentrations of RES (0, 20, 40, and 80 µg/ml) were admixed. Then, the following indicators were tested: lymphocyte apoptotic rate, lymphocyte viability, NF-κB activity, TNF-a level, reactive oxygen species (ROS), and expression of apoptosis-related proteins (Fas/FasL and Caspase-8). The results indicated that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resveratrol; NF-κB; Lymphocyte apoptosis; Chicken.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400747

Reversion to virulence evaluation of a 9R vaccine strain of Salmonella enterica serovar gallinarum in commercial brown layers
Provedor de dados: 89
Autores: Okamoto,AS; Menconi,A; Gonçalves,GAM; Rocha,TS; Andreatti Filho,RF; Savano,EN; Sesti,L.
The live vaccine Cevac S. Gallinarum, made from a rough strain of Salmonella enterica subspecies enterica serotype Gallinarum is used for preventing fowl typhoid, a disease that still causes considerable economic losses in countries with a developing poultry industry. The objective of this paper was to evaluate a possible reversion to virulence of the strain used in a vaccine in commercial brown layers. Only Salmonella-free chicks were utilized. One hundred twenty (120) 12-day-old Dekalb brown layers divided in two trials were used. The first trial had six groups of 15 birds each. Birds of group 1 were vaccinated with 10 doses of Cevac S. Gallinarum subcutaneously and 10 doses orally, in a total of 20 doses of vaccine. Then the birds of groups 2, 3, 4, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 9R strain; Fowl typhoid; Reversion to virulence; Salmonella Gallinarum; SG9R vaccine.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100007

Risk factors and likelihood of Campylobacter colonization in broiler flocks
Provedor de dados: 89
Autores: Kuana,SL; Santos,LR; Rodrigues,LB; Borsoi,A; Moraes,HLS; Salle,CTP; Nascimento,VP.
Campylobacter was investigated in cecal droppings, feces, and cloacal swabs of 22 flocks of 3 to 5 week-old broilers. Risk factors and the likelihood of the presence of this agent in these flocks were determined. Management practices, such as cleaning and disinfection, feeding, drinkers, and litter treatments, were assessed. Results were evaluated using Odds Ratio (OR) test, and their significance was tested by Fisher's test (p&lt;0.05). A Campylobacter prevalence of 81.8% was found in the broiler flocks (18/22), and within positive flocks, it varied between 85 and 100%. Campylobacter incidence among sample types was homogenous, being 81.8% in cecal droppings, 80.9% in feces, and 80.4% in cloacal swabs (230). Flocks fed by automatic feeding systems...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Campylobacter; Cecal droppings; Cloacal swabs; Feces.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300010

Risk of Incidence of Hock Burn and Pododermatitis in Broilers Reared under Commercial Conditions
Provedor de dados: 89
Autores: Jacob,FG; Baracho,MS; Nääs,IA; Lima,NSD; Salgado,DD; Souza,R.
ABSTRACT The most common lesions observed in commercial broiler farms are hock burns and pododermatitis, defined as necrotic lesions on the plantar surface of the footpads and in the hock of growing broilers, causing pain and compromising broiler welfare. The present study aimed at identifying the risks of hock burns and pododermatitis in broilers reared under commercial conditions on new or reused litter. Twenty-four 40-d-old broilers reared in two houses in a commercial broiler farm. The plantar surface of the footpads and the hocks of broiler were recorded using infrared thermal images. The incidence of hock burns in broilers reared on new litter was 0.72 times lower than those on reused litter. Broilers reared on new litter presented lower risk (0.75,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feet lesion; Litter; Poultry production.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300357

Rotavirus detection and isolation from chickens with or without symptoms
Provedor de dados: 89
Autores: Villarreal,LYB; Uliana,G; Valenzuela,C; Chacón,JLV; Saidenberg,ABS; Sanches,AA; Brandão,PE; Jerez,JA; Ferreira,AJP.
Rotaviruses have been identified as one of the main etiological agents of diarrhea and enteritis in mammals, including humans, and in avian species. Few studies have been published about enteric viruses in Brazilian poultry, including those related to rotavirus infection. Such studies demonstrate significant occurrence and the importance of enteric viruses in poultry presenting intestinal problems. Enteric viruses are the primary cause of injuries to the gut, allowing other agents, especially bacteria, to attach, to penetrate, and to replicate in the enteric tissue, leading to further damage. The aim of the present study was to detect rotavirus in the intestinal contents of layers and broilers by polyacrylamide gel electrophoresis (PAGE) and virus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enteric viruses; Rotavirus; Isolation; MA104 cells; Chicken.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300009

Saccharomyces Cerevisiae cell wall dietary supplementation on the performance and intestinal mucosa development and integrity of broiler chickens vaccinated against coccidiosis
Provedor de dados: 89
Autores: Luquetti,BC; Furlan,RL; Alarcon,MFF; Macari,M.
This study was carried out to verify if Saccharomyces cerevisiae cell wall (SCCW) dietary supplementation (0.2%) was capable of protecting the intestinal mucosa of broiler chickens vaccinated against coccidiosis. Body weight gain, feed intake, feed conversion and intestinal mucosa morphometric parameters and epithelial loss were evaluated. In the experiment,400 day-old male chicks were distributed according to a completely randomized design in a 2x2 factorial arrangement. The following treatments were applied: T1 - no vaccination/ no SCCW supplementation; T2 - no vaccination/SCCW supplementation; T3 - vaccination/no SCCW supplementation; and T4 - vaccination/SCCW supplementation to four replicates of 25 birds each. Birds were vaccinated on the first day of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coccidiosis; Vaccine; Broiler; Intestinal mucosa; Morphometrics; Saccharomyces cerevisiae.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200002

Safety and efficacy of a salmonella gallinarum ΔcobSΔcbiA strain with potential to prevent chicken infections by salmonella gallinarum and salmonella enteritidis
Provedor de dados: 89
Autores: Paiva,JB; Penha Filho,RAC; Moura,BS; Berchieri Junior,A.
New vaccine design techniques have allowed the development of effective vaccine strains against Salmonella infections inwhich the risks of reversion to the wild type and virulence is null. The mutant strain Salmonella Gallinarum ΔcobSΔcbiA was previously shown to be avirulent in chickens. In this study, this strain was tested as a vaccine against Salmonella Gallinarum (SG) and S. Enteritidis (SE) infections, and its protection levels, safety and possible risks of reversion to virulence after vaccination of layers were evaluated. Birds were vaccinated at five days of age or at five and 25 days of age. At 45 days of age, brown and white layers were challenged with SG and SE wild strains, respectively. Two assays to test the possibility of reversion to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella vaccine; Attenuation; Reversion to virulence; Chicken; Immune response.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200005

Salmonella Enteritidis em Aves: Retrospectiva no Brasil
Provedor de dados: 89
Autores: Silva,EN; Duarte,A.
Salmonella Enteritidis (SE) emergiu como um grande problema avícola e de saúde pública no Brasil a partir de 1993. Os estudos epidemiológicos, incluindo a fagotipagem e sonda complementar de rRNA, sugerem a entrada de SE no Brasil via importação de material genético avícola contaminado, provavelmente no final da década de 80. As taxas de crescimento da avicultura brasileira na década de 90 criaram condições favoráveis para a manutenção e proliferação da SE nos plantéis avícolas. Além disso, o uso indiscriminado de antibióticos em aves, particularmente as quinolonas, encorajou a manutenção de lotes positivos para SE. As cepas de SE isoladas de aves têm mostrado alta sensibilidade aos antibióticos de uso comum em avicultura, incluindo as quinolonas....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aves; Galinhas; Ovos; Salmonelose aviária; Salmonella Enteritidis.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200001

Salmonella Enteritidis in commercial layer flocks in Europe: legislative background, on-farm sampling and main challenges
Provedor de dados: 89
Autores: Carrique-Mas,JJ; Davies,RH.
Tipo: Info:eu-repo/semantics/article
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100001

Salmonella Enteritidis in Layer Farms of Different Sizes Located in Northern China: On-Farm Sampling and Detection by the PCR Method
Provedor de dados: 89
Autores: Li,X; Liu,L; Li,Q; Xu,G; Zheng,J.
ABSTRACT Salmonella enterica subspecies enterica serotype Enteritidis (SE) has caused foodborne infections over decades. It is transmitted mainly from contaminated eggs to humans. SE is commonly present in layer houses, and closely interacts with environmental factors. The objective of the present study was to develop a viable PCR method to identify SE in environmental samples collected in layer farms of different sizes, and to evaluate SE contamination status in four main egg-production provinces of northern China. After specificity retrieval using Primer-BLAST against the NCBI database, three SE specific oligonucleotide primers were selected as candidate primers. The primers targeting Prot6e gene were adopted and primers targeting Sdf I were also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment; Layer farm; PCR; Salmonella Enteritidis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300377

Salmonella Enteritidis in the eggs of Japanese quails (Coturnix coturnix japonica - Temminck &amp;amp; Schlegel, 1849) fed diets with different calcium and phosphorus levels
Provedor de dados: 89
Autores: Katayama,ERi; Donato,TC; Silva,A de P; Mazola,RP; Garcia,EA; Okamoto,AS; Andreatti Filho,RL.
Several studies point out that eggs are the main cause of human salmonellosis, particularly when poorly processed or eaten raw. In addition of causing public health problems, the presence of Salmonella hinders international food trade, and therefore, it is a health barrier. There are several predisposing factors for the contamination of internal egg content by Salmonella spp, including eggshell quality, which is related to dietary calcium (Ca) and phosphorus (P) levels. In this study, eggs from Japanese quails fed diets containing two different Ca (2.0 or 3.5%) or P (0.25 or 0.45%) levels were evaluated. Three production phases were used in the experiment: starter, intermediate, and final. The presence of Salmonella Enteriditis in the eggshell and internal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Quail production; Coturnix japonica; Phosphorus; Salmonellosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100005

Salmonella fecal excretion control in broiler chickens by organic acids and essential oils blend feed added
Provedor de dados: 89
Autores: Borsoi,A; Santos,LR; Diniz,GS; C. Salle,CTP; Moraes,HLS; Nascimento,VP.
Salmonellosis is an important disease with economic impact as it may affect animal performance and may result in foodborne disease in humans through the eggs and carcass contamination. Regarding the Salmonella control, it is possible to decrease its fecal excretion and the contamination of chicken carcasses by adding organic acids to the feed or drinking water at appropriate times. The aim of this study was to test a blend of organic acids and essential oils in broilers challenged with Salmonella Enteritidis (SE), and to verify the fecal excretion of Salmonella. Sixty broilers were placed in four groups. One group was the negative control. Another group was orally inoculated at 1 day-old with 10(5) CFU/mL of SE as a positive SE control. Two groups (T3 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicks; Organic acids; Salmonella Enteritidis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100010

Salmonella Gallinarum virulence in experimentally-infected Japanese quails (Coturnix japonica)
Provedor de dados: 89
Autores: Rocha-e-Silva,RC; Cardoso,WM; Teixeira,RSC; Albuquerque,ÁH; Horn,RV; Cavalcanti,CM; Lopes,ES; Gomes Filho,VJR.
Salmonella Gallinarum is the agent of fowl typhoid in poultry and infects mainly adult galliforms, causing significant economic losses in poultry production. Because quails are susceptible to this disease and quail production is becoming increasingly important in Brazil, this study was carried out to evaluate the virulence of Salmonella Gallinarum strain to quails. The inoculum was prepared from S. Gallinarum strain resistant to nalidixic acid. Forty eight 16-week-old Japanese quails were randomly distributed in three groups. Before the experiment, cloacal swabs were collected from all birds in order to confirm they were free from Salmonella spp. Cloacal swabs and fecal samples were collected on days 03, 06, 09, 12, and 15 post-inoculation. Birds that died...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Experimental inoculation; Mortality; Re-isolation; Salmonella Gallinarum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100007

Salmonella serovars in laying hen flocks and commercial table eggs from a region of São Paulo state, Brazil
Provedor de dados: 89
Autores: Freitas Neto,OC de; Galdino,VMCA; Campello,P L; Almeida,AM de; Fernandes,SA; Berchieri Júnior,A.
Salmonella spp. is the main originator of human foodborne diseases worldwide and is mainly transmitted by food containing eggs. In Brazil, as a result of the lack of studies and data collection very little is known about the prevalence of Salmonella spp. in laying hen flocks and commercial table eggs. Consequently the present study was elaborated and aimed at generating data about Salmonella spp. in part of the Brazilian egg production chain. Eight flocks of day-old chicks, eight flocks of adult laying hens (four vaccinated with bacterin against Salmonella Enteritidis and four unvaccinated) and commercial table eggs from four supermarkets were examined. Salmonella spp. was isolated in 50 % of the newly hatched chicks, 25 % of the adult flocks and 1.5 % of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella serovars; Laying hens; Chicks; Feces; Eggs.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200008

Salmonella spp. in meat-type quails (Coturnix coturnix coturnix) in the State of São Paulo, Brazil
Provedor de dados: 89
Autores: Freitas Neto,OC de; Angela,HL da; Soares,NM; Guastalli,EAL; Almeida,AM de; Berchieri Junior,A.
In the present study Salmonella spp. was surveyed in four flocks of meat-type quails reared in a farm that also had processing plant on site, located in the region of Bastos, state of São Paulo, Brazil. Meconium samples of one-day-old quail chicks were collected from transport cardboard boxes. Cecal content was collected on days 7, 14, 21, 28 and 35 of rearing. At 36 days of age, birds were slaughtered in the farm's processing plant, where two samples of water from the scalding and the chilling tanks and four carcasses per flock were collected. All samples were examined for Salmonella spp. using traditional bacteriological methods. Salmonella spp. was present in meconium samples of three flocks and in cecal feces of the four flocks. This bacterium was also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass; Meat-type quails; Salmonella spp.; Processing plant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300016

Screening of Feral Pigeons (Columba livia) for Pathogens of Veterinary and Medical Importance
Provedor de dados: 89
Autores: Ferreira,VL; Dias,RA; Raso,TF.
ABSTRACT Pathogens of veterinary and medical importance were investigated in 240 feral pigeons (Columba livia) captured in warehouses in São Paulo State, Brazil for one year. Rapid serum agglutination test (RST) was performed for the detection of antibodies against Mycoplasma synoviae, Mycoplasma gallisepticum and Salmonella Pullorum/Gallinarum. Positive samples were submitted to hemagglutination inhibition (HI) and tube seroagglutination tests, respectively. Molecular techniques (RT-PCR and PCR) were performed for Newcastle Diseases Virus (NDV) and Chlamydia psittaci diagnosis. Additionally, HI test was applied to detect antibodies against NDV. Serological results by RST were 3.3% positive for M. synoviae, 2.5% for M. gallisepticum, and 0.4% for S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlamydia psittaci; Mycoplasma sp.; Newcastle disease virus; Salmonella sp.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400701

Seasonal variation of Alphitobius diaperinus population in broiler facilities in the center-north region of the state of São Paulo
Provedor de dados: 89
Autores: Camargo Neto,AF; Tallarico,E; Capriogli,MA; Soares,VE; Meireles,MV; Silva,GS.
The seasonality of Alphitobius diaperinus population was studied during different seasons during one year, in broiler facilities located in the center-north region of the State of São Paulo. Parasite counting was weekly carried out by the use of traps adapted from the modified model of Arends. During the experimental period, facilities were not submitted to chemical treatment, and the litter was changed between flocks. A lower number of adults and larvae was observed during autumn, with the peak registered in the summer. There was no significant difference between spring and winter averages (adults and larvae), and between spring and summer averages (adults). Average temperatures in the facilities varied from 23.4ºC (winter) to 27.1ºC (spring). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alphitobius diaperinus; Broiler chickens; Monitoring; Seasonality.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300008

Selected Traits of Hatched and Unhatched Eggs and Growth Performance of Yellow Japanese Quails
Provedor de dados: 89
Autores: Copur Akpinar,G; Alasahan,S; Ayasan,T.
ABSTRACT This study was carried out to investigate selected traits of hatched and unhatched eggs and chick growth performance of yellow Japanese quails (Coturnix japonica). Eggshell temperature at the time of transfer to the hatcher was higher in hatched eggs (38.09oC) than in unhatched eggs (37.43oC) (p=0.000), lower in eggs with in early embryonic mortality (37.39oC) than those with late embryonic mortality (38.13oC) (p=0.000), and higher in eggs with female chicks (38.14oC) than those with male chicks (37.95oC). Lower eggshell, yolk, and albumen weights were determined in eggs with embryonic mortality of 17-18 days (0.58 g, 3.13 g and 4.96 g) compared with those with 10-16 days (0.67 g, 3.55 g and 5.58 g) and embryonic mortality of 1-9 days (0.75 g,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg traits; Eggshell temperature; Egg weight loss; Yellow Japanese quails.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300527

Selecting appropriate bedding to reduce locomotion problems in broilers
Provedor de dados: 89
Autores: Almeida Paz,ICL; Garcia,RG; Bernardi,R; Nääs,IA; Caldara,FR; Freitas,LW; Seno,LO; Ferreira,VMOS; Pereira,DF; Cavichiolo,F.
Two experiments were carried out at the Poultry Sector of the School of Agrarian Sciences of the Federal University of Grande Dourados to evaluate the incidence of leg problems in broilers reared on two distinct types of bedding material: rice husks or wood shavings, both new and reused. In both trials, a randomized experimental design was applied in factorial arrangement (2 x 2 x 2) using two genetic strains (Cobb® or Ross®); two sexes (male or female), and two litter materials (rice husks or wood shavings). In each trial 1080 one day pullets were reared equally divided in the treatments. The birds were placed in 4.5 m² boxes at a density of 10 birds m-2. All birds were fed diets with equal nutritional density, and water was offered ad libitum. Feeds were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gait score; Leg problems; Multicriteria analysis; Rice husks; Wood shaving.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300008

Selecting the most adequate bedding material for broiler production in Brazil
Provedor de dados: 89
Autores: Garcia,RG; Almeida Paz,ICL; Caldara,FR; Nääs,IA; Pereira,DF; Ferreira,VMOS.
Broiler chicken production is widely dispersed across the globe, and one important issue for growers is the selection of adequate bedding material, as the availability and price of substrates varies among countries and regions within a same country. This study aimed at applying a multiple criteria analysis approach for the selection of the most appropriate bedding material for broiler production. Based on field research data and growers' experience, the most desirable characteristics of a litter material were chosen as the main criteria. The selected materials were wood shavings, rice husks, chopped Napier grass (Pennisetum pupureum), 50% sugar cane bagasse (Saccharum L.) plus 50% wood shavings, 50% sugar cane bagasse (Saccharum L.) plus 50% rice husks,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative bedding material; Broiler production; Multiple criteria analysis; AHP.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200006

Selection for entomopathogenic fungi and LD50 of Metarhizium anisopliae (Metsch.) Sorok. for the Lesser Mealworm Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae)
Provedor de dados: 89
Autores: Chernaki-Leffer,AM; Sosa-Gòmez,DR; Almeida,LM.
The pathogenicity of insect-pathogenic hyphomycetous isolates to the lesser mealworm Alphitobius diaperinus (Panzer) was tested in this study. Thirty isolates of Beauveria bassiana (Balsamo) Vuillemin, Paecilomyces amoenoroseus (Hennings), P. fumosoroseus (Wize) Brown &amp;amp; Smith, P. lilacinus (Thom) Samson, P. tenuipes (Petch) Samson, Metarhizium anisopliae (Metschnikoff) Sorokin, and M. anisopliae var. acridum were initially screened by sprinkling dry conidia onto adult A. diaperinus or by allowing adults to walk on Petri dishes with sporulating fungal isolates. The two most virulent isolates, CNPSo-Ma352 (M. anisopliae) and CNPSo-Ma356 (M. anisopliae), killed 30% and 26.7% of the dry-conidia treated adults, respectively. These two isolates were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alphitobius diaperinus; Bioassays; Biological control; Entomopathogenic fungi.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300008

Selection for reproductive traits in white egg stock using independent culling levels
Provedor de dados: 89
Autores: Schmidt,GS; Figueiredo,EAP.
The objective of this study was to report the response to selection for fertility and hatchability in white egg layers strains, based on sire and dam performance, and the effects of inbreeding on these traits. Two selected white egg strains (CC and DD) from Embrapa´s poultry program under multiple trait selection were compared to a control strain (CCc). The control strain was established by randomly mating one male from each sire family to a non-related female from each dam family and was used to monitor genetic change in the selected lines. CC and DD were selected using family and individual information on hen-day egg production up to 40 weeks of age, egg weight, sexual maturity and 16-week-old body weight over five generations. Independent culling levels...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Inbreeding; Reproductive traits; Selection culling levels.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400006

Self-Monitoring Microbiological Criteria for the Assessment of Hygienic Procedures During Chicken Slaughtering
Provedor de dados: 89
Autores: Dias,MR; Dianin,KCS; Bersot,LS; Nero,LA.
ABSTRACT Self-monitoring procedures are adopted by food industries to ensure the quality and safety of final products, considering hygiene and processing criteria. This study aimed to evaluate contamination in chicken processing, considering the microbiological criteria proposed by self-monitoring systems. Environmental samples from reception, slaughtering and processing were collected from three chicken slaughterhouses (Sl1, Sl2, Sl3), and subjected to microbiological analysis to enumerate hygiene indicators microorganisms: mesophilic aerobes, enterobacteriaceae, coliforms and Escherichia coli. The obtained counts were converted to log10, compared by ANOVA (p&lt;0.05) and self-monitoring microbiological criteria for each slaughterhouse were considered. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken; Self-monitoring; Hygiene; Slaughtering; Processing.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200317

Serologic response of SPF chickens to live vaccines and other strains of Mycoplasma gallisepticum
Provedor de dados: 89
Autores: Nascimento,ER do; Polo,P de A; Pereira,VL de A; Barreto,ML; Nascimento,M da GF do; Zuanaze,MAF; Corrêa,ARA; Silva,R de CF.
False positive serologic reactions and difficulties in the diagnosis of Mycoplasma gallisepticum (MG) in chickens have increased lately as a result of infection by low virulent MG strains and the use of live MG vaccines in poultry. The objective of this study was to evaluate the serologic responses of SPF chickens exposed to the three commercially available live MG vaccines, and one low virulent MG strain (MG-70), contributing to the diagnosis and monitoring of MG infection in birds. Six groups of SPF chickens were used. The control group was not infected nor challenged; one group was infected with the low virulent strain MG-70 (MG-70); three groups were immunized and named after the MG vaccine used, i.e., MG-6/85, MG-ts11, and MG-F; and finally one group...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycoplasma; Poultry; Serology; Vaccination.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100007

Serological Detection of Newcastle Disease Virus Antibodies in Local Chickens and Guinea Fowls in the Area of Kumasi, Ghana
Provedor de dados: 89
Autores: Boakye,OD; Emikpe,BO; Folitse,RD; Bonnah,SG; Adusei,K; Owusu,M; Oyebanji,VO.
Abstract Newcastle Disease (ND) has been identified as a major constraint to local poultry production with its impact being felt more in rural poultry production which forms about 80% of Ghana poultry population. However documented evidence on ND virus activity in rural poultry in Ghana is still lacking. Hence, this study was conducted to evaluate the level of circulating antibodies against ND using the Haemagglutination Inhibition (HI) technique. Sera collected from unvaccinated 292 chickens and 153 guinea fowls randomly selected from households and a live bird market in Kumasi and its environs were evaluated for Newcastle disease virus antibodies. Results showed 81.8 % (239/292) of local chickens and 24.2 % (37/153) of guinea fowls tested positive for ND...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Haemagglutination Inhibition test; Newcastle Disease; Vaccine; Kumasi; Ghana.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100087

Serological Diagnosis of Influenza A Subtype H1 on Family Poultry of Belo Horizonte, Minas Gerais and Santa Maria, Rio Grande Do Sul, in Brazil.
Provedor de dados: 89
Autores: Castro Filho,RPL; Torres,ACD; Marin,SY; Diniz,SA; Matos,JCC; Mureb,EN; Resende,M; Martins,NRS.
ABSTRACT Serum samples (n=687) from Gallus gallus domesticus were collected for the investigation of antibodies to avian influenza virus (AIV-A) in the family poultry of the surrounding counties of Santa Maria/RS and the metropolitan region of Belo Horizonte/MG, totaling twenty different counties. Additional samples of seventeen (n=17) free-flying ducks (C. moschata pure or hybrid with Anas platyrhynchos) were collected in Belo Horizonte. The chosen tests for the survey were performed as described by the World Organization for Animal Health (OIE), including agar gel immunodiffusion (AGID) for antibodies to AIV-A nucleoprotein (N) and haemagglutination- inhibition (HI) for antibodies to subtype H1. Out of the 704 serum tests performed by AGID, eight (8/704)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anas platyrhynchos; Avian influenza; Brazil; Cairina moschata; Family poultry; Gallus gallus domesticus; Serology.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400811

Seroprevalence of Salmonella and Mycoplasma in commercial broilers, backyard chickens, and spent hens in the region of Triângulo Mineiro, State of Minas Gerais, Brazil
Provedor de dados: 89
Autores: Silva,CBC; Chagas,WF; Santos,RF; Gomes,LR; Ganda,MR; Lima,AMC.
Avian salmonellosis and mycoplasmosis are infectious diseases that, in addition of causing lack of flock uniformity, represent a hazard to human health. The objective of the present study was to evaluate the seroprevalence of mycoplasmosis and salmonellosis in commercial broilers, backyard chickens, and spent hens slaughtered at a processing plant with local health inspection in Uberlândia, MG, Brazil. A total of 210 samples were randomly collected at the time of bleeding. Samples were submitted to rapid plate serum agglutination test (RSA) for the classification of Salmonella pullorum, Salmonella gallinarum, Mycoplasma gallisepticum and Mycoplasma synoviae. In order to increase result specificity, mycoplasmosis-positive samples were submitted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella pullorum; Salmonella gallinarum; Mycoplasma gallisepticum; Mycoplasma synoviae; Gallus gallus.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100057

Seroprevalence survey of H9N2 avian influenza virus in backyard chickens around the Caspian Sea in Iran
Provedor de dados: 89
Autores: Hadipour,MM.
Since 1998, an epidemic of avian influenza occurred in the Iranian poultry industry. The identified agent presented low pathogenicity, and was subtyped as an H9N2 avian influenza virus. Backyard chickens can play an important role in the epidemiology of H9N2 avian influenza virus infection. Close contact of backyard chickens with migratory birds, especially with aquatic birds, as well as neighboring poultry farms, may pose the risk of transmitting avian influenza virus, but little is known about the disease status of backyard poultry. A H9N2 avian influenza virus seroprevalence survey was carried out in 700 backyard chickens from villages around the Caspian Sea, Northern Iran, using the hemagglutination-inhibition (HI) test. The studied backyard chickens...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian Influenza virus; Backyard chickens; Caspian Sea; H9N2; Seroprevalence; Iran; HI.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100008

Serosurvey of selected avian pathogens in brazilian commercial Rheas (Rhea americana) and Ostriches (Struthio camelus)
Provedor de dados: 89
Autores: Freitas Neto,OC de; Carrasco,AOT; Raso,TF; Sousa,RLM; Berchieri Júnior,A; Pinto,AA.
Ratite farming of has expanded worldwide. Due to the intensive farming methods used by ratite producers, preventive medicine practices should be established. In this context, the surveillance and control of some avian pathogens are essential for the success of the ratite industry; however, little is known on the health status of ratites in Brazil. Therefore, the prevalence of antibodies against Newcastle Disease virus, Chlamydophila psittaci, Mycoplasma gallisepticum, Mycoplasma synoviae, and Salmonella Pullorum were evaluated in 100 serum samples collected from commercial ostriches and in 80 serum samples from commercial rheas reared in Brazil. All sampled animals were clinically healthy. The results showed that all ostriches and rheas were serologically...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlamydophila psittaci; Mycoplasma spp.; Newcastle Disease virus; Ostrich; Rhea; Salmonella spp.; Serology.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400010

Serotypes of Salmonella in Broiler Carcasses Marketed at Ibague, Colombia.
Provedor de dados: 89
Autores: Rodriguez,JM; Rondón,IS; Verjan,N.
ABSTRACT Salmonella enterica is a large group of Gram-negative bacteria responsible for a number of foodborne infections associated with the consumption of contaminated poultry products. The hygienic status of raw chicken meat marketed at Ibague, Tolima, Colombia, is currently unknown. To address this issue, a cross-sectional study was conducted to estimate the prevalence of Salmonella spp., in raw chicken marketed at different outlets in this city. Salmonella spp. was isolated by standard microbiological methods, followed by biochemical, serological, and molecular confirmation. Additionally, risk factors associated with the presence of the bacteria were identified. The prevalence of Salmonella in raw chicken was 17.41% (47/270), and 14 different serotypes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isolation; Poultry; Prevalence; Risk factors; Serotyping.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400545

Serotyping and Genotyping of Salmonella Strains Isolated From Broilers, Chicken Carcasses Before and After Chilling, and Frozen Chicken Breasts Produced in The States of Mato Grosso do Sul and Santa Catarina, Brazil
Provedor de dados: 89
Autores: Machado,SCA; Pereira,VLA; Aquino,MHC; Santos,AFM; Rodrigues,DP; Giombelli,A; Nascimento,ER.
ABSTRACT The present study investigated the effectiveness of a single Salmonella prevention and control program applied in two different processing plants, located in the states of Mato Grosso do Sul (plant A) and Santa Catarina (Plant B), belonging to the same company, and identified Salmonella strain subtypes isolated from broilers, carcasses before and after chilling, and frozen chicken breasts. The Salmonella prevention and control program was 90% effective in plant A and 100% in plant B, considering a level of 10% positive samples per frozen chicken breast batch acceptable. A total of 128 strains were serotyped, being 10 from drag swabs, 31 from cloacal swabs, 83 from carcasses, and 4 from frozen chicken breasts. After serotyping analysis, 30 strains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food safety; PFGE; Poultry meat; Salmonella.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100135

Serovars of Salmonella spp isolated from broiler chickens and commercial breeders in diverse regions in Brazil from July 1997 to December 2004
Provedor de dados: 89
Autores: Kanashiro,AMI; Stoppa,GFZ; Cardoso,ALSP; Tessari,ENC; Castro,AGM.
Avian salmonellosis is a worldwide problem to the poultry industry, from the point of view of animal health and public health as well. The aim of the present study was to survey the most common Salmonella serovars in commercial breeders or broiler flocks from several regions in Brazil. The results of the present study indicated a high incidence of S enterica subspecies enterica serovar Enteritidis in breeders (57.5%) and broilers flocks (84.0%). The importance of these findings lies in the fact that S. Enteritidis has become the most frequent serovar responsible for foodborne outbreaks and sporadic cases of salmonellosis in humans.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry; Salmonella; Serovars.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300010

Severe Outbreak of Avian Encephalomyelitis in Laying Hens in Northeastern Brazil
Provedor de dados: 89
Autores: Rocha,PMC; Barros,MEG; Rocha,BP; Souza,FAL; Mendonça,FS; Evêncio-Neto,J.
ABSTRACT This paper describes the epidemiological, clinical and pathological aspects of an avian encephalomyelitis (AE) outbreak in commercial laying hens in Northeastern Brazil. The disease affected 23,409 layers (from day one until 100 weeks) leading to mortality of 16.5% (5,049/30,600) of the flock. Twenty laying hens were clinically examined, and blood samples were collected and tested by Enzyme-Linked Immunosorbent Assay (ELISA). Five laying hens with neurological signs were necropsied and samples of the brain, cerebellum, spinal cord, sciatic nerve, heart, ceca tonsils, proventriculus and liver were collected, fixed in formalin buffered solution and processed according to routine methods for histological examination. Clinical signs were observed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avian encephalomyelitis; Birds; Laying hens; Nonsuppurative encephalomyelitis; Vaccination.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200305

Sex effect on productive parameters, carcass and body fat composition of two commercial broilers lines
Provedor de dados: 89
Autores: Rondelli,S; Martinez,O; García,PT.
The aim of this work was to evaluate sex effect on behavior of two commercial broilers lines. Productive parameters, carcass composition and yield, amount and quality of fat deposited in the meat and skin and total body fat were studied. A completely randomized design with four treatments (MR-Male Ross, HR-Female Ross, MAF-Male Avian Farm and HAF-Female Avian Farm) and eight repetitions of 40 chickens was used. Animals received water and food ad libitum. After 50 days, two birds (a male and a female) per repetition were chosen at random and slaughtered for carcass evaluation. Samples of breast, leg, skin and abdominal fats were analyzed to determine the percentage of intramuscular fat, total cholesterol and fatty acid composition. The Ross line showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Cholesterol; Fatty acids; Lines.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300002

Shelf Life of Chicken Meat Balls Submitted to Sous Vide Treatment
Provedor de dados: 89
Autores: Can,ÖP; Harun,F.
The objective of this study was to investigate the appropriate temperature for processing storage of chicken meatballs made of minced chicken meat with the sous vide method. The chicken meatballs were prepared and separated into four experimental groups according to the application of heat treatment (10 and 20 minutes) and storage time (+2 and +10°C). Sensory, microbiological (total aerobic mesophilic bacteria, total psychrotrophs, lactic acidbacteria, Enterobacteriaceae, Clostridiumperfringens, Listeria spp.), chemical (pH, thiobarbituric acid), color (L*, a*, b* values), and texture profile analyses were performed on meatball samples. Cl. perfringens and Listeria spp. were not detected in meatball samples during the storage period. Samples cooked at 10...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sous vide; Chicken; Meatballs; Quality; Shelf life.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200137

Single Nucleotide Polymorphisms in IGFBP-2 Gene and Their Associations with Body Weight Traits on Jinghai Yellow Chicken
Provedor de dados: 89
Autores: Zhao,XH; Li,MY; Xu,SS; Liu,GJ.
ABSTRACT Insulin-like growth factor binding protein-2 (IGFBP-2) regulates a broad spectrum of biological activities involved in growth, development, and differentiation. This study aimed at comparing polymorphisms in intron2 of the IGFBP-2 gene among four chicken breeds and at analyzing the associations between its genotypes and body weight in Jinghai Yellow chicken by using PCR-SSCP technique. For primer P2, three genotypes (AA, AB and BB) were observed in the four chicken breeds. Gene sequencing revealed one insertion/deletion (the inserted/deleted TC after position 552bp) in the intron 2 of IGFBP-2 gene. For primer P5, three genotypes were identified in Jinghai Yellow chickens, and named CC, CD and DD. Gene sequencing revealed two SNPs (C1107G, C1130T)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jinghai Yellow chicken; IGFBP-2 gene; PCR-SSCP; Polymorphism; Body weight.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400497

Single-trait bayesian analysis of some growth traits in japanese quail
Provedor de dados: 89
Autores: Karaman,E; Firat,MZ; Narinc,D.
The aim of this study was to estimate the heritability for some growth traits of Japanese quail through the estimation of variance components by Bayesian methodology. For this purpose, 340 progenies of 34 sires were used. Live weight (LW42) and absolute and relative growth rates at 42 days of age (AGR42 and RGR42, respectively) were submitted to single-trait analysis under a sire model. A software (package MCMCglmm) was used for the estimations, and a single chain with 65,000 rounds was run for each trait with a thinning interval of 50. Burn-in was set at 15,000 and inferences were built on posterior samples of 1,000 draws for each trait. All marginal posterior densities were unimodal and marginal posterior distributions of sire variance are slightly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Absolute growth rate; Bayesian; Heritability; Quail; Relative growth rate.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200007

Slaughter and Carcass Traits of Geese with Different Feather Colour and Gender
Provedor de dados: 89
Autores: Kırmızıbayrak,T; Boğa,B Kuru.
ABSTRACT The aim of this study was to determine slaughter and carcass traits of geese with different feather colour and gender. The study was conducted with Turkish geese in free-range production conditions in Kars, Turkey. A total of 282 geese (251 females, 31 males) were grouped by feather colour as black (n=49), white (n=77), black pied (n=127), and brown and brown tawny (n=29). Geese were weighed before slaughter and then the slaughter and carcass traits were determined. Data were subjected to one-way ANOVA, and post-hoc Tukey HSD test was applied to compare feather-colour means and the independent sample t-test was used to compare gender means. Feather colour did not influence (p&gt;0.05) slaughter and carcass traits, except for hot carcass, feather...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass trait; Feather colour; Geese; Gender; Slaughter trait.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400759

Small intestine development of laying hens fed different fiber sources diets and crude protein levels
Provedor de dados: 89
Autores: Praes,MFFM; Pereira,AA; Sgavioli,S; Duarte,KF; Alva,JCR; Domingues,CH de F; Puzzoti,MM; Junqueira,OM.
The objective of the presente study was to evaluate the effects on different dietary fiber sources and crude protein levels on the intestinal morphometry of commercial layers. Isa Brown® layers with 48 weeks of age were distributed in a completely randomized experimental design with a 3 x 2 + 1 factorial arrangement, resulting in seven treatments with seven replicates of eight birds each. At the end of the fourth experimental period (28 days each), birds were 64 weeks of age and were randomly chosen (two birds per replicate, totaling 14 birds per treatment), weighed and sacrificed by neck dislocation. Their intestine was dissected and the duodenum, jejunum and ileum were collected for subsequent analysis of intestinal morphometry. Treatments consisted of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Fibers; Intestinal development.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300004

Sobrevivência de Salmonella enteritidis em Ovos Contaminados Artificialmente, Após Desinfecção e Armazenados em Diferentes Temperaturas
Provedor de dados: 89
Autores: Barros,MR; Andreatti Filho,RL; Lima,ET; Sampaio,HM; Crocci,AJ.
Avaliou-se a contaminação da casca e do conteúdo interno de ovos inoculados com Salmonella enterica sorovar enteritidis fagotipo 4, lavados com água de torneira (AT) ou solução de amônia quaternária (AQ) e armazenados a 8ºC e 25ºC. Duzentos e cinqüenta e dois ovos foram divididos em três grupos. Os tratamentos de cada grupo consistiram de imersão em AT, AQ a 25ºC e a 43ºC. Após a secagem natural, todos os grupos foram contaminados com solução de S. enteritidis. Seguindo-se a contaminação, cada grupo tratado foi estocado a 8ºC ou 25ºC, e a presença de S. enteritidis na casca e no conteúdo interno foi avaliada após zero, 24, 96 e 168 horas. A sanitização com AQ mostrou-se eficiente na redução de S. enteritidis nas cascas dos ovos. O armazenamento dos ovos a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovo; Salmonella enteritidis; Desinfecção; Temperatura de armazenamento.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300003

Sodium Requirement for Muscovy Ducks in Housing
Provedor de dados: 89
Autores: Santos,ANA; Cruz,FGG; Oliveira Filho,PA; Farias,TM; Rufino,JPF; Viana Filho,GB.
ABSTRACT The present study aimed to determine the ideal sodium levels for muscovy ducks in housing. Two hundred and forty muscovy ducks of creole lineage were used, distributed in boxes with water and food ad libitum. The experimental design was completely randomized, where treatments were constituted by six nutritional plans (initial, growth and termination) with different sodium levels, and four replicates of 10 muscovy ducks each. The birds had weekly performance evaluations, and after 90 days, eight birds (four males and four females) in each treatment were slaughtered for evaluation of carcass traits. Data collected were subjected to Tukey test at 5% of significance. Differences were observed (p&lt;0.05) in performance (feed intake and feed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass traits; Mineral; Performance; Poultry; Waterfowl.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000100300

Some aspects of chicken behavior and welfare
Provedor de dados: 89
Autores: Costa,LS; Pereira,DF; Bueno,LGF; Pandorfi,H.
Brazil is the world leader in broiler production and export. It achieved this position mainly to its excellent supply chain structure and climate, which favor poultry and grain production throughout its territory. Although Brazilian egg production is not as important as broiler production, this segment presents great potential of increasing its share in the global market. However, as elsewhere in the world, Brazilian poultry production faces the challenge to balance two elements within its supply chain: cruelty and productivity. The consumers of the European Union (EU) are very concerned with animal welfare issues. In order to increase its share in the European market, and eventually in the world market, Brazilian poultry producers must understand the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enriched environment; Precision poultry production; Consumer market; Productivity.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300001

Some Physical, Morphological, and Mechanical Characteristics of Turkey (Meleagris gallopavo) Eggs
Provedor de dados: 89
Autores: Galic,A; Pliestic,S; Janjecic,Z; Bedekovic,D; Filipovic,D; Kovacev,I; Copec,K.
ABSTRACT The physical, morphological, and mechanical characteristics of eggs play an important role in the processes of embryo development and hatching. Some physical, morphological, and mechanical characteristics of turkey (Meleagris gallopavo; Zagorje breed) eggs collected during two laying cycles from same turkey hens were determined in this study. The average values of length, width, geometric mean diameter, weight, surface area, volume, sphericity, eggshell thickness, and eggshell density were determined as 66.61 mm, 46.84 mm, 52.66 mm, 77.74 g, 8712.42 mm2, 76553.49 mm3, 79.31%, 0.354 mm and 3.13 g cm-3, respectively. Eggs collected during second laying cycle were, on average, larger and heavier in comparison with those collected during first cycle....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breaking strength; Egg composition; Egg dimensions; Eggshell strength shape index; Turkeys.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200317

Sources of human non-typhoid salmonellosis: a review
Provedor de dados: 89
Autores: Freitas Neto,OC de; Penha Filho,RAC; Barrow,P; Berchieri Junior,A.
Salmonellosis is a worldwide disease caused by bacteria of the genus Salmonella. Currently, there are over 2,500 identified serovars of Salmonella. A reduced number of these serovars, about eighty, are implicated in most animals and human diseases. Most cases of salmonellosis in humans are associated with the consumption of contaminated food products such as beef, pork, poultry meat, eggs, vegetables, juices and other kind of foods. It may also be associated with the contact between humans and infected pet animals. Therefore, the chain of human salmonellosis is very complex and in most cases the origin of the infection is difficult to establish. The use of antimicrobial agents to treat and to prevent bacterial infections in humans and animals, as well as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial resistance; Beef; Food; Pork; Poultry; Salmonella spp; Vegetables.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100001

Sources of trophic action on performance and intestinal morphometry of broiler chickens vaccinated against coccidiosis
Provedor de dados: 89
Autores: Sakamoto,MI; Faria,DE; Nakagi,VS; Murakami,AE.
The aim of this experiment was to evaluate the effect of sources of trophic action (glutamine alone, glutamine associated with glutamic acid and yeast) associated with vaccination against coccidiosis on the performance and morphometry of the small intestine of broilers. In the trial, 1,200 broiler chicks were distributed according to a completely randomized design with a 3 x 2 + 2 (trophic action x vaccination or not + control - free trophic factor) factorial arrangement, with five replicates of 30 birds each. Vaccination negatively affected performance parameters and the morphometry of the intestinal mucosa, but at the end of the experimental period, among the broilers vaccinated against coccidiosis, the group fed glutamine presented better recovery from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eimeria; Glutamine; Intestinal mucosa; Nucleotides.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400008

Soybean Oil and Beef Tallow in Starter Broiler Diets
Provedor de dados: 89
Autores: Fascina,VB; Carrijo,AS; Souza,KMR; Garcia,AML; Kiefer,C; Sartori,JR.
The objective of this study was to determine the energy values of soybean oil (SBO) and tallow (T) combined in different ratios, and to evaluate their effects on the performance, body composition, and serum lipid levels of starter broilers. In experiment I, a digestibility trial was performed to determine the energy value of the SOB and T mixtures using 100 12 - to 21 -day-old broilers. In experiment II, 930 one-day-old broilers were used. Treatments consisted of the inclusion of 4% SBO and T inclusions at the following ratios: 0:100, 25:75, 50:50, 75:25, 100:0. Each treatment included six replicates. In experiment I, AME and AMEn linearly increased (P&lt;0.01), as SBO participation in the mixture increased. In experiment II, the different lipid ratios...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fats; Energy value; Oils; Performance; Serum lipids.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400006

Soybean β-conglycinin Induces Intestinal Immune Responses in Chicks
Provedor de dados: 89
Autores: Kang,DR; Belal,SA; Song,KD; Yoon,C; Park,BY; Shim,KS.
ABSTRACT β-conglycinin from soybean has been recognized as one of the major feed allergens. This study investigated the effects of β-conglycinin-induced allergic sensitization on chicks’ small intestines. A total of 40 7-day-old (100 g) chicks were divided into four groups as control, β-conglycinin 1 h, β-conglycinin 6 h, and β-conglycinin 12 h. All treatment groups were administered 60 mg of β-conglycinin/chick and small intestine samples were collected. β-conglycinin-induced allergic sensitization marginally damages the epithelium lining of the duodenum villi and, in addition, significantly increases the accumulation of mast cells in the lamina propria and crypt of the duodenum. Moreover, the TNF-α level significantly increased in all β-conglycinin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-conglycinin; Mucosal immune response; Cytokines; Chick.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200313

Stabilization of Rice Bran in Broiler Feed with Natural and Synthetic Antioxidants and Heat Treatment
Provedor de dados: 89
Autores: Gopinger,E; Krabbe,EL; Avila,VS De; Surek,D; Lopes,LS.
ABSTRACT The objective of this study was to evaluate different strategies for the oxidative stabilization of rice bran (RB) in the diet of broiler chickens using natural antioxidant additives, synthetic antioxidant additives and heat treatment on performance, breast meat quality and liver fat content and the nutrient digestibility coefficients. Furthermore, the study aimed to evaluate the effects of heat treatment and antioxidants, antioxidant additive treatments, without antioxidants, natural, and synthetic, and to three heat treatments, without heat, dry-heat and moist-heat, after the rice bran was stored for 90 days and then incorporated into the experimental diets. 1080 broilers were arranged in a 3 x 3-factorial randomized design with 10 replicates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuff; Meat quality; Poultry; Oxidation; Digestibility.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400321

Standard Body Weight and Serum Estradiol and Progesterone Concentrations in Response to Total Lysine Content in Female Broiler Breeders from 14 to 42 Days after Hatch
Provedor de dados: 89
Autores: Kim,E; Rew,HJ; Shin,TK; Cho,HM; Wickramasuriya,SS; Yi,YJ; Jeong,J; Choi,I; Heo,JM.
ABSTRACT This study was conducted to determine the total lysine requirement for female broiler breeders from days 14 to 42. Two-hundred and ten female broiler breeders were used in a completely randomized design with 6 replicates per treatment and 5 chicks per pen under restricted feeding. The contents of total lysine used in this experiment were 0.68, 0.72, 0.76, 0.80, 0.84, 0.88 and 0.92% in the diet. A basal diet was formulated to meet or to exceed the Ross 308 female broiler breeders’ nutrient specifications except for the lysine. Body weight and feed intake were measured to calculate feed efficiency, and body weight uniformity was defined on a weekly basis. One chick per pen was randomly selected to collect blood samples, organ and an abundance of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder; Linear-plateau model; Nutritional response model; Quadratic-plateau model; Total lysine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100071

Standardization of A Sample-Processing Methodology for Stable Isotope Studies in Poultry
Provedor de dados: 89
Autores: Denadai,JC; Sartori,JB; Pezzato,AC; Costa,VE; Sartori,MMP; Petinati,BES; Gennari,RS; Silva,ET; Carvalho,MAG; Ishizuka,AND.
ABSTRACT The objective of this study was to determine if lipid extraction processes alter the isotopic value of δ13C and δ15N of tissues (pectoral muscle, thigh and liver) and eggs and if the use of anticoagulants interferes with blood and plasma δ13C and δ15N isotopic values. Samples were acquired from the same flock of birds. The 32 egg samples were randomly divided into four treatments (liquid, dehydrated, and fat-extracted with ether or chloroform + methanol) with eight replicates each. The 24 samples of pectoral muscle, thigh muscle and liver of broilers were randomly divided into three treatments (dehydrated, fat-extracted with ether and chloroform + methanol) with eight replicates each. Blood samples were divided into a 3x3 factorial arrangement...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon-13; Broilers; Nitrogen-15; Laying hens.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100302

Starter dietary lysine level and strain cross effects on performance and carcass traits of broiler females
Provedor de dados: 89
Autores: Corzo,A; Kidd,MT.
Dietary lysine has been shown to impact the performance of broilers, particularly with aspect of breast meat accretion and yield. There have been studies that suggest that early dietary lysine has an effect on breast meat yield in male broilers. A study was designed to evaluate starter dietary lysine (1.20 vs 1.35% of diet as achieved by the addition of L-lysine at the expense of a filler) effect on performance of female broilers from three different genetic strain crosses, and monitor subsequent effects at 41 and 56 d of age. Body weight and feed consumption were higher for birds consuming the high lysine starter diet, but feed conversions were similar when compared to the low lysine diet. Body weight and feed conversion were similar among strains....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breast meat; Broiler; Lysine; Performance.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200004

Storage Period Affects Weight Loss of Japanese Quail Eggs
Provedor de dados: 89
Autores: Roriz,BC; Sgavioli,S; Garcia,RG; Nääs,IA; Domingues,CHF; Caldara,FR; Rombola,LG; Ayla,CM; Bernnecke,K.
ABSTRACT Long storage periods may increase embryo mortality. The objective of this study was to evaluate the effects of storage period on the weight loss, eggshell surface temperature, hatchability, and embryonic mortality of Japanese quail eggs. Two hundred fertile eggs were collected from a flock of 30-week-old Japanese quails (Coturnix coturnix japonica). The eggs were collected for 10 consecutive days after lay, and immediately incubated. A completely randomized experimental design with 10 treatments, corresponding to the number of days eggs were stored between egg collection and setting, with 20 replicates each, was applied. Egg weight loss increased with storage period duration, starting on day 6 (2.1%, on average) and reached 3.26%, on average, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryo; Hatchability; Incubation; Laying; Temperature.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400589

Strategies to alleviate the incidence of ascites in broilers: a review
Provedor de dados: 89
Autores: Aftab,U; Khan,AA.
Ascites is a complex problem caused by many interacting factors such as genetics, environment and management. Many nutritional, medicinal and management strategies have been proposed to alleviate the problem. Higher levels of dietary vitamin C and E along with selenium yeast might be beneficial, presumably because of their role in improving cellular integrity. Oils rich in n-3 fatty acids have been shown to reduce pulmonary hypertension and, consequently, ascites incidence. The potential use of flax oil has already been demonstrated, whereas the effects of other oils rich in n-3 fatty acids (fish, linseed and canola oils) remain to be investigated. The assessment of the effects of dietary electrolyte balance on ascites incidence seems to be a promising...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascites; Broilers; Pulmonary hypertension.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400001

Structural Attributes Dynamics of the Brazilian Broiler Production Chain
Provedor de dados: 89
Autores: Waker,R; Nääs,I.
ABSTRACT Brazil is one of the world’s largest broiler meat exporters. Broiler meat is one of the most consumed meats worldwide. The most significant challenge for strategic business management when optimizing the financial returnis knowing exactly where to invest. The same happens in the broiler production chain. The present research aimed to investigate which were the most central actors in the broiler supply chain and the dynamics of the chain. The current study was done based on the poultry chain business relations, from 2000 to 2015, of the leading actors of the Brazilian broiler production chain. The centrality indicator was established through social network analysis (SNA) approach, to determine their positions in the chain as a whole. The most used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry supply chain; Social network analysis; Broiler market trends.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300517

Structural Differences of the Harderian Gland between Common Pheasants (Phasianus Colchicus Talischensis) and Hybrids of Italian Amber and Common Pheasants
Provedor de dados: 89
Autores: Klećkowska-Nawrot,J; Goździewska-Harłajczuk,K; Kowalczyk,A; Łukaszewicz,E; Nowaczyk,R.
ABSTRACT The aim of the present study was to demonstrate the histological and histochemical structure of the Harderian gland in wild and hybrid of wild and domestic birds. The samples were stained with haematoxylin-eosin, methyl green-pyronin Y, periodic acid-Schiff, alcian blue pH 2.5, aldehyde fuchsin and Hale's dialyzed iron staining's. In both species, the glands had multilobar tubuloacinar structure type I. The Harderian gland was located in the orbit near the inter-orbital septum, between the medial rectus muscle, the pyramidal muscle of the third eyelid, and the ventral oblique muscle. In the common pheasant, the gland was wider in the proximal and distal part. The common pheasant had more elongated lobes of the Harderian gland than in the hybrid....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Harderian gland; Histology; Histochemistry; Common pheasant; Hybrid of Italian amber and common pheasant.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200309

Structural homologies of major immune-related genes between duck and chicken: implications on differential avian resistance against influenza virus
Provedor de dados: 89
Autores: Li,G; Lu,L.
Tipo: Info:eu-repo/semantics/article
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100001

Studies on carbon-13 turnover in eggs and blood of commercial layers
Provedor de dados: 89
Autores: Denadai,JC; Ducatti,C; Pezzato,AC; Carrijo,AS; Caldara,FR; Oliveira,RP.
This paper aimed at evaluating the influence of diets containing different isotopic values of carbon-13 turnover on the half-life of egg (yolk + albumen), yolk and albumen individually, and blood of poultry using delta‰13C isotopic variation. Commercial layers fed four experimental isocaloric and isonitrogenous diets (RC4, RC3, RMC4 and RMC3) containing different isotopic values, during an experimental period of 56 days. Turnover of the studied tissues was influenced by the experimental diets. Blood and albumen were more influenced by dietary treatments as compared to egg and yolk. The RMC3 diet induced better performance (better feed intake and higher egg production) due faster rate of carbon substitution than the RC4 diet, and lower half-life for egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albumen; Carbon-13; Yolk; Blood; Egg; Comercial laying hens.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400008

Studies with sanguinarine like alkaloids as feed additive in broiler diets
Provedor de dados: 89
Autores: Vieira,SL; Berres,J; Reis,RN; Oyarzabal,OA; Coneglian,JLB; Freitas,DM; Peña,JEM; Torres,CA.
This research included two studies evaluating the live performance of broilers fed Sangrovit® (minimum of 1.5% sanguinarine, a quaternary benzo[c]phenanthridine alkaloid extracted from Macleaya cordata). Both studies were conducted using Ross 308 female broiler chicks. Birds were fed corn-soybean meal all-vegetable diets without growth promoters with 5 treatments and 8 replications in each study. In the first study, treatments were composed of a Negative Control without feed additive and four diets with graded increases of Sangrovit of 12.5, 25, 37.5, and 50 ppm. In the second study, chicks received a similar diet from placement to 21 days of age and subsequently were given feeds with graded reductions in crude protein (CP) as follow: a Negative Control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Feed additive; Sangrovit®; Sanguinarine.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100010

Study on the bone mineral density of broiler suffering femoral joint degenerative lesions
Provedor de dados: 89
Autores: ICL,Almeida Paz; Mendes,AA; Balog,A; Vulcano,LC; Ballarin,AW; Almeida,ICL; Takahashi,SE; Komiyama,CM; Silva,MC; Cardoso,KFG.
An experiment was carried out with male and females broilers of two different commercial breeds to evaluate bone mineral density of the right femur head. A number of 600 one-day-old broilers were raised in an experimental poultry house up to 42 days of age at the School of Veterinary Medicine and Animal Science of UNESP, Botucatu, Brazil. After slaughter, three males and three females in each breed in each of the established gross scores were selected. Their femora heads were submitted to gross examination, and subsequently the thighs were submitted to the Veterinary Hospital for radiographic analysis. Femora were also submitted to bone resistance, Seedor index, and dry matter content analyses. All these bone quality characteristics were different between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone mineral density; Broilers; Femoral degeneration; Femur; Genetics.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200005

Study on the Efficiency of Grape Seed Meals Used as Antioxidants in Layer Diets Enriched with Polyunsaturated Fatty Acids Compared with Vitamin E
Provedor de dados: 89
Autores: Olteanu,M; Criste,RD; Panaite,TD; Bunduc,V; Panaite,CV; Ropota,M; Mitoi,M.
ABSTRACT The 4-week study was conducted with 180 Lohmann Brown layers (52 weeks of age). The layers were assigned to three groups (C, E1 and E2). The basal diet (group C) consisted mainly of corn, soybean meal and corn gluten, and contained 19% crude protein and 11.58 MJ/kg metabolizable energy. The diets for groups E1 and E2 differed from group C by the inclusion of 5% flax meal and of dietary antioxidants. The concentration of α-linolenic acid in the fat of E1 and E2 diets was almost 10 times higher than in group C. E1 diet was supplemented with vitamin E (100 mg/kg feed, DM), while E2 diet was supplemented with 2% grape seed meal (polyphenols: 630.890 µg gallic acid equivalents/g sample; flavonoids: 5.065 µg rutin equivalents/g sample; antioxidant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; PUFAs; Antioxidants; Grape seed meal; Quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400655

Study on the Efficient Methods for Chicken Eggshell windowing and the Factors Affecting the Hatchability
Provedor de dados: 89
Autores: Yan,HF; Wang,K; Tang,MX; Feng,XH; Trefil,P; Qiu,MZ; Jiang,J.
ABSTRACT In order to find out the main factors influenced the hatchability and improve the hatchability of the windowed chicken eggs at stage X, several experiments were made on the basis of the former patent of eggshell windowing methods on equatorial plane, such as cutting and sealing techniques, air cell recovering, laying position immediately after sealing, as well as the injection volumes into the subgerminal cavity of the blastoderm. The result showed that:1) the best sealing material combination was straw powder (SP) and instant glue (IG); 2) there was a highly positive correlation between air cell rate and hatchability; 3) the highest hatchability increased to 71.6% when the eggs were windowed and sealed with IG dropped firstly and then SP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air cell; Blastoderm; Chicken; Eggshell windowing; Hatchability.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200305

Study on the Morphological Development of Quail Embryos
Provedor de dados: 89
Autores: Bai,JY; Pang,YZ; Zhang,XH; Li,YX.
ABSTRACT In this study, the SWKQ series microcomputer automatic incubator was used to study the growth and development of quail in the embryonic stage. Results showed that the embryo shape of became gradually defined as embryo aged. On day 6, the head and body of quail were clearly differentiated, the legs became longer and the wings appeared. At 7 embryo age, the entire embryo of quail was very clear, and the beak has formed. During 3 to 9 days of age, quail embryos length increased quickly, showing a linearly upward trend. At 9 day old, quail embryos length reached 2.2 cm. The regression equation of embryo length to day old was curve regression, giving as following: y=-0.464+0.325x-0.004x2, y: embryo length, x: the age of the embryo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quail; Morphological observation; Embryo length; Regression equation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600091

Subsequent Effect of Dietary Lysine Regimens Fed in the Starter Phase on the Growth Performance, Carcass Traits and Meat Chemical Composition of Aseel Chicken in the Grower Phase
Provedor de dados: 89
Autores: Hussain,M; Mahmud,A; Hussain,J; Qaisrani,SN; Mehmood,S; Rehman,A.
ABSTRACT This study was designed to examine carryover effect of dietary lysine (Lys) levels fed during the starter phase on the growth performance of three varieties of Aseel chickens. A total of 378 birds (126 from each variety) derived from a previous experiment, in which birds were distributed according a randomized block design in a 3×3 factorial arrangement, were evaluated from 7-18 weeks of age. Treatments consisted of three varieties of Aseel chicken [(Mianwali (MW), Peshawari (PW) and Lakha (LK)] fed three dietary Lys regimes (high, medium and low) during the starter phase (0-6 weeks). In the present experiment, the performance parameters, carcass traits, and meat chemical composition six replicates of seven birds per treatment were evaluated. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growing phase; Growth performance; Meat composition; Carcass characteristics; Aseel chickens.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300455

Subsequent Effect of Lysine Regimens on Egg Characteristics of Native Aseel Chicken
Provedor de dados: 89
Autores: Batool,T; Farooq,S; Roohi,N; Mahmud,A; Ghayas,A; Ahmad,S; Usman,M.
ABSTRACT This study was planned to evaluate subsequent effects of rearing under various lysine regimens on egg quality traits in Peshawari, Mushki, Mianwali and Lakha varieties of native Aseel. Ninety six pullets and 12 cockerels (24♀ and 3♂) from each variety were randomly chosen, placed in three-tiered cage units of equal space and standard conditions were followed for their maintenance. These birds were reared on three lysine regimens (L1, L2 and L3), wherein L1 containing 1.3% lysine was given in one phase from week 1-6 of age, L2 regimens entailing 1.4 and 1.2% lysine was smeared in two phases from week 1-3 and 4-6 of age, while in L3 regimen, lysine @ 1.5, 1.3 and 1.1% in diet was fed in three phases from week 1-2, 3-4 and 5-6 of age, respectively....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aseel; Egg quality; Lysine regimens.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400789

Substituição Parcial do Farelo de Soja pela Farinha de Vísceras de Aves em Dietas Balanceadas com Base na Proteína e em Aminoácidos Totais ou Digestíveis para Frangos de Corte
Provedor de dados: 89
Autores: Bellaver,C; Brum,PAR; Lima,GMM; Boff,J; Kerber,J.
A formulação com base no conceito de proteína ideal (PI) é mais eficiente quando são usados ingredientes alternativos ao milho (M) e ao farelo de soja (FS). Assim, o objetivo desse trabalho foi comparar formulações de dietas utilizando o conceito de PI, usando farinha de vísceras (FV) em substituição ao FS, em dietas de frangos de corte. Os tratamentos foram os seguintes: T1 = dieta com 22 % e 20% de proteína bruta (PB) nas fases inicial (FI) e de crescimento (FC) e 3200 kcal/kg de EM durante todo experimento; T2 = energia semelhante a dieta T1 e PI à base de M e FS (1,15% de lisina digestível na FI e 0,90% de lisina digestível na FC; T3=dieta semelhante a T2, com 20 % e 25 % de substituição do FS por FV nas FI e FC, respectivamente; T4=dieta semelhante a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Farinha de vísceras; Farelo de soja; Subprodutos de origem animal; Proteína ideal; Aminoácidos digestíveis; Aminoácidos totais.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300005

Successful Identification of Duck Genome Region Determining Desirable Uniformity of Meat Performance Traits
Provedor de dados: 89
Autores: Dobek,A; Gornowicz,E; Moliński,K; Grajewski,B; Lisowski,M; Szwaczkowski,T.
ABSTRACT The objective of this study was to identify genome regions determining duck meat performance traits with possible small variation. In total, 368 crossbred ducks of F2 generation obtained from two parental lines: Pekin-type ducks of Polish origin (A55) and Pekin-type ducks of French origin (GL-30) were recorded. The following seven traits were analyzed: body weight, breast muscle weight, leg muscle weight, water holding capacity in the breast and leg muscles, and color lightness L* of the breast and leg muscles. All birds (including parental and F1 generations) were genotyped (29 microsatellite markers). Means and coefficients of variation (CV) were calculated for 28 full-sibs (four sires by six dams and one sire by four dams). Number of progeny...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duck; Meat quality; Microsatellite markers.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300437

Sunflower meal and enzyme supplementation of the diet of 21- to 42-d-old broilers
Provedor de dados: 89
Autores: Araújo,WAG de; Albino,LFT; Rostagno,HS; Hannas,MI; Pessoa,GBS; Messias,RKG; Lelis,GR; Ribeiro Jr,V.
The objective of this study was to evaluate the performance of male broilers between 21 and 42 days of age fed diets supplemented with an enzyme blend (EB) and containing graded levels of sunflower meal (SFM). In total, 1920 male Cobb broilers were distributed according to a randomized block experimental design in a 4 x 3 factorial arrangement (four SFM dietary levels vs. three feed formulations) with eight replicates of 20 birds each. Dietary SFM inclusion levels were 0, 8, 16, and 24%. Feed formulation included one negative control diet (NC) formulated to supply broiler nutritional requirements, considering EB nutritional matrix values; a diet formulated as the first one, but with the addition of 0.5% EB (NC+EB); and the third diet (positive control -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sunflower meal; Broilers; Enzyme blend; Alternative feedstuffs.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200002

Sunflower Meal and Supplementation of an Enzyme Complex in Layer Diets
Provedor de dados: 89
Autores: Araújo,WAG; Albino,LFT; Rostagno,HS; Pessoa,GBS; Cruz,SCS; Lelis,GR; Carneiro,PRO; Vieira,RA.
ABSTRACTThe objective of this experiment was to evaluate the performance of 64- to 79-wk-old laying hens fed diets supplemented with an enzyme complex (EC) and containing increasing sunflower meal (SFM) levels. A total of 384 Hy-Line Brown layers were distributed according to a randomized block design in a 4 × 2 factorial arrangement (four levels of SFM, and inclusion or not of EC), with eight replicates of six birds each unit. The levels of SFM inclusion were 0, 8, 16 and 24%, utilized in two distinct diets. Diets were calculated to meet all the nutritional requirements of birds, except for the nutrients that would be made available by the nutritional matrix of the enzyme complex, with or without utilization of EC. The parameters analyzed were feed intake...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feedstuffs; Eggs quality; Feed costs; Poultry.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300363

Sunflower meal in commercial layer diets formulated on total and digestible amino acids basis
Provedor de dados: 89
Autores: Casartelli,EM; Filardi,RS; Junqueira,OM; Laurentiz,AC; Assuena,V; Duarte,KF.
An experiment was conduced to evaluate the inclusion of sunflower meal (SBM) in commercial layer diets formulated on total or digestible amino acids basis. One hundred forty-four 41-week-old Lohmann LSL layers were distributed in a completely randomized experimental design in a 2 x 4 factorial arrangement with three replications of six birds each. Treatments consisted of a combination of four SBM inclusion levels SBM(0%, 4%, 8%, and 12%) and feed formulation according two amino acid recommendations (total or digestible). The experimental period was divided into five periods of fourteen days. Performance parameters (egg production, feed intake, feed conversion, egg mass) were evaluated for each period. In the last two days of each period, three eggs per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Nutrition; Performance; Poultry.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300005

Suplementação de Ferro para Poedeiras Comerciais de Segundo Ciclo de Produção
Provedor de dados: 89
Autores: Bertechini,AG; Fassani,ÉJ; Fialho,ET; Spadoni,JA.
O objetivo deste trabalho foi avaliar os efeitos da suplementação de ferro, proveniente do sulfato ferroso (26% de ferro), em ração à base de milho e farelo de soja, sobre o desempenho, qualidade do ovo, deposição de ferro na gema e parâmetros sangüíneos de poedeiras comerciais no segundo ciclo de produção. Foram utilizadas 240 poedeiras comerciais Lohmann-LSL, oriundas de plantel comercial e submetidas a muda forçada com 72 semanas de idade, alojadas em galpão convencional de postura, em uma densidade de três aves por gaiola (25 x 45 x 40 cm). O delineamento experimental foi inteiramente casualizado, com os tratamentos constando níveis de 0, 20, 40, 60 e 80 ppm de ferro suplementar, com quatro repetições de 12 aves, e três períodos de avaliações de 28...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ferro; Poedeiras comerciais; Nutrição avícola.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300009

Suplementação de Treonina em Dietas de Frangos de Corte, Variando a Energia e as Relações Energia: Proteína
Provedor de dados: 89
Autores: Reginatto,MF; Ribeiro,AML; Penz Jr,AM; Kessler,AM; Krabbe,EL.
Dois experimentos (EXP 1 e 2) foram conduzidos para avaliar relações energia metabolizável:proteína bruta (EM:PB) e a adição de treonina (Thr) em dietas com alta (A) (3.200kcal EM/kg) e baixa (B) (2.900kcal EM/kg) energia, sobre desempenho e composição de carcaças de frangos de corte machos. As relações energia:proteína foram 139 e 160 kcal/%, para as dietas iniciais (1 a 21 dias) (EXP 1) e 160 e 181kcal/%, para as de crescimento (22 a 40 dias) (EXP 2), nos dois níveis de energia. As dietas com ampla relação EM:PB foram suplementadas, ou não, com Thr a fim de iguala-las às dietas com menor EM:PB. Os níveis de Met+Cys e de Lys foram constantes. As aves receberam uma dieta única após (EXP1), ou antes (EXP2) do fornecimento das dietas experimentais. Nos dois...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composição de carcaças; Frangos de corte; Relação energia:proteína; Treonina.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300006

Suplementation of Antibiotic Growth Promoters versus Supplementation of Functional Oils in Broiler Breeders: Performance and Offspring Effects
Provedor de dados: 89
Autores: Contini,J; Schmidt,J; Gonçalves,D; Baldo,J; Fernandes,JIM; Torrent,J.
ABSTRACT The effects of either functional oil or antibiotic growth promoter supplementation on broiler breeders and their offspring were assessed in 2 experiments. In Experiment I, 16,400 broiler breeders (22 weeks old) were distributed into 2 experimental groups, one supplemented with 1,500 ppm of a commercial blend of functional oils (active ingredients: cashew nutshell liquid and castor oil) and the other with 500 ppm of bacitracin methylene disalicylate (BMD). Laying rates, fertility, embryonic mortality, and egg characteristics were measured from weeks 25 to 46. In Experiment II, 720 one day old male chicks, born from 42 week old breeders, from each one of the two treatments in Experiment I, were supplemented with either 10 ppm of enramycin or 1,500...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Functional oils; Growth promoters; Offspring effects.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400305

Supplementation of Natural Antioxidants to Reduced Crude Protein Diets for Japanese Quails Exposed to Heat Stress
Provedor de dados: 89
Autores: Şenay,S; Islim,P; Tugay,A.
ABSTRACT The study aimed at comparing the effects of the supplementation of natural antioxidant sources to a reduced crude protein diet on the performance, carcass traits, blood parameters, liver antioxidant enzyme activities and meat lipid peroxidation of Japanese quails exposed to heat stress. A total of 640 14-day-old male Japanese quails were exposed to two different temperature treatments (TT): thermoneutral (TN) or heat stress (HS)and were fed five different dietary treatments (DTs). A normal-protein diet (SCP) was formulated according to the National Research Council (24% CP). The reduced crude protein diet (RCP) was formulated to contain 3% less protein than that of the SCP diet. Three additional diets were prepared by supplementing the RCP with200...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant enzymes; Heat stress; Lipid peroxidation; Natural antioxidants; Quails; Performance.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100303

Suppresses of Astragalus Polysaccharide on E. coli-Induced Injured Intestinal Microvascular through TLR4-NF-κB Signal Pathways in Chickens
Provedor de dados: 89
Autores: Su,L; Wang,J; Huang,J; Zhao,Y; Jiang,H; Li,H.
ABSTRACT To investigate the hypothesis that APS can attenuate E. coli-induced microvascular dysfunction in chicken intestine, 60 0-day old male chickens were divided into three groups with 5 replications of 4 chicks. Chicken in the APS group were treated with 15 mg APS daily while the others were given 0 mg APS for 6 days. Then all 7-day old chicken were injected intraperitoneally by E. coli, except for the chicken in the control group. After 4 h, all chicken’s intestinal samples were collected to detect gene expressions involved in inflammatory factors and adhesion molecules. Results showed that APS attenuated the signs of edema and hemorrhage in 7-day old chicken intestinal mucosa which were induced by E. coli injection. Consistently, APS significantly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astragalus polysaccharide; Escherichia coli; Intercellular adhesion molecule -1; Nuclear factor - κB; Vascular cell adhesion molecule -1.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300302

Supra-nutritional Levels of Selected B Vitamins in Animal or Vegetable Diets for Broiler Chicken
Provedor de dados: 89
Autores: Suckeveris,D; Burin Jr,A; Oliveira,AB; Nascimento Fº,MA; Pereira,R; Luvizotto Jr,JM; Bittencourt,LC; Hermes,RG; Menten,JFM.
ABSTRACT The objective of this study was to evaluate the effects of supra-nutritional level of selected B vitamins in different types of diet on broiler performance. Two experiments were conducted using male and female one-day-old chicks (n=288 each; initial body weights in experiment I and II was, respectively, 47.57 ± 0.43, and 47.98 ± 0.31) reared in batteries up to 18 days. In experiment I, the chicks were fed a corn and soybean meal-based diet and, in experiment II, a diet containing oxidized animal by-product meals and soybean oil was used. Both experiments followed a completely randomized design in a 3 × 2 factorial arrangement, consisting of the factors: i) supplementation levels of selected B vitamins (control, 3- or 6-times control of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal by-product B vitamins complex Dietary nutrient density Performance parameters; Vegetable diet.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300305

Surface temperature distribution in broiler houses
Provedor de dados: 89
Autores: Baracho,MS; Nääs,IA; Nascimento,GR; Cassiano,JA; Oliveira,KR.
In the Brazilian meat production scenario broiler production is the most dynamic segment. Despite of the knowledge generated in the poultry production chain, there are still important gaps on Brazilian rearing conditions as housing is different from other countries. This research study aimed at analyzing the variation in bird skin surface as function of heat distribution inside broiler houses. A broiler house was virtually divided into nine sectors and measurements were made during the first four weeks of the grow-out in a commercial broiler farm in the region of Rio Claro, São Paulo, Brazil. Rearing ambient temperature and relative humidity, as well as light intensity and air velocity, were recorded in the geometric center of each virtual sector to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Housing; Infrared thermography.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300003

SURVEILLANCE FOR NEWCASTLE DISEASE VIRUS, AVIAN INFLUENZA VIRUS AND MYCOPLASMA GALLISEPTICUM IN WILD BIRDS NEAR COMMERCIAL POULTRY FARMS SURROUNDED BY ATLANTIC RAINFOREST REMNANTS, SOUTHEASTERN BRAZIL
Provedor de dados: 89
Autores: Guimarães,MB; Hurtado,R; Bello,CP; Vanstreels,RET; Ferreira,AJP.
ABSTRACT The geographic overlap between areas of Atlantic rainforest and human activities allows interactions to occur between humans and wild and domestic animals. Despite the great importance of the domestic animal-wildlife-human interface that occurs at poultry farms in terms of public health, economic production and wildlife conservation, there are few studies in Brazil examining the distribution and health of wild birds that interact with poultry farms. From January to December 2010, mist nets were used to capture 166 free-ranging birds that were within close proximity to three poultry farms in Atlantic rainforest remnants in south-eastern Brazil. The species composition was examined, and molecular methods were used to test for avian influenza virus,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Surveillance; Atlantic rainforest; Poultry farms; Wild birds; Influenza virus; Newcastle disease virus; Mycoplasma gallisepticum.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300387

Survey of infectious laryngotracheitis outbreak in layer hens and differential diagnosis with other respiratory pathogens
Provedor de dados: 89
Autores: Chacón,JLV; Brandão,PEB; Villarreal,LYB; Gama,NM; Ferreira,AJP.
Trachea, lung, and conjunctive samples from 51 commercial layer farms from Bastos region, São Paulo, Brazil, were submitted to nested-PCR and virus isolation in SPF chicken embryos for ILT diagnosis. This region experienced an outbreak characterized by respiratory signs, decrease in egg production and increased mortality. Out of the 51 tested field samples, 23 were positive for ILT by nested-PCR, 22 were positive after the virus isolation, and 24 were positive when both techniques were used. Newcastle disease virus, Avian pneumovirus, or Mycoplasma gallisepticum were not detected. Infectious bronchitis virus was detected in one farm and Mycoplasma synoviae was detected in eight farms. The high incidence of infectious laryngotracheitis virus (ILTV)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infectious laryngotracheitis; Nested-PCR; Virus isolation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100009

Susceptibility of mammalian cell line for isolation of IBDV from clinical samples
Provedor de dados: 89
Autores: Silva,SEL; Ferreira,HL; Carvalho,BA; Cardoso,TC.
Susceptibility of chicken embryo related cells (CER) to non-classical IBDV was compared with Vero cells for the same purpose. It was used 20 bursal samples collected from clinical cases of IBDV, positive by histopathological evaluation. After three times infection of CER and Vero cells monolayers, at 6, 12, 18, 24, 48, 60 and 72h post-infection (PI), extra-cellular and intracelluar IBDV was measured. The extra-cellular amount of IBDV particles was quantified by DAS-ELISA from 6h PI, and increased for both cells studied until 72h PI. The IBDV re-isolation performed by infecting chicken embryos showed positive results at all PI studied. The intracellular IBDV RNA was shown by RT-PCR, where all tested samples were positive. However, the cytopathic effect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avibirnavirus; CER cells; Diagnosis; Double antibody sandwich ELISA; RT/PCR.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100009

Tamanho da Partícula do Milho e Forma Física da Ração e Seus Efeitos Sobre o Desempenho e Rendimento de Carcaça de Frangos de Corte
Provedor de dados: 89
Autores: Dahlke,F; Ribeiro,AML; Kessler,AM; Lima,AR.
Este experimento foi realizado com o objetivo de investigar os efeitos de diferentes granulometrias, expressa em Diâmetro Geométrico Médio (DGM) do milho (0,336mm, 0,585mm, 0,856 mm e 1,12 mm) de dietas fornecidas na forma farelada (FAR) e peletizada (PEL), no desempenho e no rendimento de carcaça e de cortes de frangos de corte de 21 a 42 dias de idade. Dietas FAR, produzidas com DGM de 0,336 mm resultaram em um menor consumo (p&lt;0,001), ganho de peso (p&lt;0,001) e pior conversão alimentar (p&lt;0,001) do que as PEL de mesmo DGM. Os demais DGM não mostraram diferenças entre ração FAR e PEL. Quando avaliada somente a granulometria, observou-se que o aumento no DGM melhorou o ganho de peso linearmente e de forma quadrática o consumo e a conversão...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diâmetro geométrico médio; Milho; Desempenho; Rendimento de carcaça.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300006

Tarragon (Artemisia Dracunculus L.) Could Alleviate Negative Effects of Stocking Density in Laying Hens
Provedor de dados: 89
Autores: Kaya,H; Karaalp,M; Kaynar,Ö; Tekçe,E; Aksakal,A; Bayram,B.
ABSTRACT The study was conducted to determine the effects of stocking density (SD, 5 or 7 layers/cage) and tarragon (Artemisia dracunculus L.) diet supplementation at four levels (0, 1.2, 6 and 12 g/kg feed) on performance, certain egg characteristics, serum, liver, egg yolk and small intestine bacteria parameters in laying hens. The experiment was carried out over a period of 8 weeks, with 192 Lohman Brown commercial hybrids at 50-w-age. The results showed that an increased SD reduced feed intake (FI; p&lt;0.01) and egg production (p&lt;0.05), but had no effect on the weight gain, feed conversion ratio, damaged egg ratio, egg weight and egg quality (p&gt;0.05) parameters. The supplementation of tarragon to the diet reduced the FI and damaged egg ratio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Bacteria; IgG; Stocking density; Tarragon.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100301

Taurine Reduces Heat Stress by Regulating the Expression of Heat Shock Proteins in Broilers Exposed to Chronic Heat
Provedor de dados: 89
Autores: Belal,SA; Kang,DR; Cho,ESR; Park,GH; Shim,KS.
ABSTRACT The aim of the current study was to investigate the effects of taurine on heat stress by evaluating them RNA and protein expressions of HSP90, 70 and 60in Ross broilers. Birds were distributed in a control group (CO) reared at 24ºC, a heat-stress group (HS) maintained at 34°C (weeks 3-5) and not supplemented with taurine, and a heat-stress group (HST) maintained at 34°C (weeks 3-5) and supplemented with 0.1% taurine from 2 weeks of age. The final body weight was significantly higher in the HST group than in the HS group (p&lt;0.05). The mRNA expression of all three genes in the liver and of HSP90 in the muscle were significantly lower in the HST than in the HS group (p&lt;0.05). In the liver, the expression of HSP70 and HSP60 proteins was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Taurine; Heat stress; Heat shock protein; Gene and protein expression.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300479

Technical and Economic Efficiency of Laying Hen Farms in Konya, Turkey
Provedor de dados: 89
Autores: Dogan,N; Kaygisiz,F; Altinel,A.
ABSTRACT This study was carried out to determine the technical and economic efficiency levels of laying hen farms and factors affecting the efficiency scores. For this purpose, a personal interview was carried out. Technical and economic data of 39 laying hen farms consisting their inputs and outputs over the period 2013-2015 was formed the material of this study. Efficiency levels were estimated by using Data Envelopment Analysis (DEA). Mean technical efficiency score of the enterprises were determined as 98.6%. Also 48.7% of the enterprises were determined fully technical efficient. On the other hand, mean economic efficiency of the enterprises was determined as 88.8%, while only 17.9% of the enterprises were fully economic efficient. In order to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Data envelopment analysis; Economic analysis; Efficiency; Laying hens; Tobit regression.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200263

Technical Cashew Nutshell Liquid in Diets of Growing Meat-Type Quails
Provedor de dados: 89
Autores: Sanches,LM; Eyng,C; Garcia,RG; Alves,GP; Sangalli,GG; Nunes,RV.
ABSTRACT The aim of this study was to evaluate the inclusion of technical cashew nutshell liquid (TCNSL) in European quails (Coturnix coturnix coturnix) diets from 1 to 35 days of age on the performance, carcass traits, and development of the digestive organs. 575 quails were distributed in a completely randomized design with five treatments (0%, 0.25%, 0.50%, 0.75%, and 1.00% TCNSL), five replicates, and 23 birds per experimental unit. Live performance was evaluated by weight gain, average feed intake, and feed to conversion ratio. The relative weight of the digestive organs (proventriculus, gizzard, pancreas, liver, small intestine, and large intestine), length of the small and large intestine, and carcass and parts yield (breast, wing, and leg) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass traits; Cardanol; Meat-type quails; Natural additive.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100312

Technical Performance and Cost Analysis of Broiler Production in Turkey
Provedor de dados: 89
Autores: Tandoğan,M; Çiçek,H.
Abstract In this study, the live performance and costs of broiler production was examined and cost analysis were assessed in the Balıkesir, Bolu and Sakarya Provinces, which are the most important broiler-producing regions of Turkey. Annual (years 2012-2013) production data of 125 broiler farms were analyzed. Farms were scaled according to the irrearing capacities as small (1-10,000 broilers), medium (10,001-30,000) and large (30,001 and above). Cost and performance differences among farm scales and research centers were tested by one-way analysis of variance. Average live weight (LW), livability (LA), slaughter age (SA), feed conversion ratio (FCR), and production efficiency factor (PEF) values were calculated as 2.436 ± 0.006 kg; 93.502 ± 0.133%; 42.293...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler production; Cost analysis; Technical performance; Turkey.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100169

TECHNIQUES TO MINIMIZE THE EFFECTS OF ACUTE HEAT STRESS OR CHRONIC IN BROILERS
Provedor de dados: 89
Autores: Rodrigues,MM; Garcia Neto,M; Perri,SHV; Sandre,DG; Faria Jr,MJA; Oliveira,PM; Pinto,MF; Cassiano,RP.
ABSTRACT High environmental temperature is limiting factor in broiler production. In order to minimize the undesirable consequences of acute or chronic heat stress, the techniques of fixed dietary electrolyte balance and early heat conditioning were evaluated. The objective of this study was to evaluate the possible interactions and effects of dietary electrolyte balance and early heat conditioning on feed intake, body weight, feed conversion ratio, mortality, energy bioeconomic index, fecal moisture, abdominal fat, and breast meat color (L*a*b*) of broilers submitted to chronic or acute heat stress. In total, 1280 chicks, were equally divided in experiment I (chronic heat stress, 6h/day at 32ºC from 35 to 39 d of age) and II (acute heat stress, 36 ºC for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal nutrition; Broilers; Electrolyte balance; Pale muscle syndrome; Temperature.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300325

Test profiles of broiler breeder flocks housed in farms with endemic Mycoplasma synoviae infection
Provedor de dados: 89
Autores: Fiorentin,L; Mores,MAZ; Trevisol,IM; Antunes,SC; Costa,JLA; Soncini,RA; Vieira,ND.
There is a need for a better understanding of the epidemiology of Mycoplasma synoviae (MS) infection in broiler breeders in Brazil. Many features of the infection remain unrecognizable, because there are no clinical signs of the disease. A detailed testing was performed at each 6 to 8 weeks in three MS-free flocks introduced in farms with endemic MS infection for a follow-up epidemiological study. Every flock was monitored by polymerase chain reaction (PCR), by serum plate agglutination (SPA) and hemagglutination inhibition (HI) for serology studies, and isolation of mycoplasmas from tracheal swabs. PCR was found to be the most sensitive test, detecting early MS infection. Serology was positive in less than 50% of the sera and MS was isolated only between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Mycoplasma synoviae; PCR; Serology; Survey; Transmission.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100005

The Addition of Hatchery Liquid Waste to Dairy Manure Improves Anaerobic Digestion
Provedor de dados: 89
Autores: Lopes,WRT; Orrico,ACA; Garcia,RG; Orrico Jr,MAP; Manarelli,DM; Fava,AF; Nääs,IA.
ABSTRACT The objective of this study was to determine the optimal inclusion level of liquid egg hatchery waste for the anaerobic co-digestion of dairy cattle manure. A completely randomized experimental was applied, with seven treatments (liquid hatchery waste to cattle manure ratios of0: 100, 5:95, 10:90, 15:85, 20:80, 25:75 and 30:70), with five replicates (batch digester model) each. The evaluated variables were disappearance of total solids (TS), volatile solids (VS), and neutral detergent fiber (NDF), and specific production of biogas and of methane. Maximum TS and VS disappearance of 41.3% and 49.6%, were obtained at 15.5% and 16.0% liquid hatchery waste inclusion levels. The addition of 22.3% liquid hatchery considerably reduced NDF substrate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry production; Biogas; Methane; Total solids; Volatile solids.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600065

The Antifungal Properties of Peppermint and Thyme Essential Oils Misted in Broiler Houses
Provedor de dados: 89
Autores: Witkowska,D; Sowińska,J; Żebrowska,JP; Mituniewicz,E.
ABSTRACT This study aimed at evaluating if essential oils misted in broiler houses reduce environmental fungi counts. The investigation was conducted in three experimental rooms, where broiler chickens were reared between 1 to 42 d of age. Every three days, the rooms were fogged with pure water (control) or with aqueous solutions of peppermint or thyme oils. On the next day, fogging samples from the air, flat surfaces, and litter were collected and quantitatively and qualitatively analysed for fungal contamination. The treatment with essential oils showed promising results. In the room fogged with thyme oil, aerial fungi growth was not as evident as in the control room, and presented the lowest average fungi count. Thyme oil was also the most effective in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler house; Fungal contamination; Misting; Peppermint oil; Thyme oil.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400629

The Benefit of L-Threonine Supplementation on Growth Performance, Carcass Characteristics, Intestinal Morphology and Litter Quality of Broilers.
Provedor de dados: 89
Autores: Al-Sagan,AA; Khalil,S; Smith,MP.
ABSTRACT This study was carried out to investigate the effect of dietary L-Threonine supplementation on broiler performance, carcass characteristics, duodenal histo-morphology and litter analysis. It was hypothesised that the overall broiler performance would be improved in threonine adequate diets with reduced environmental impact when using L-threonine supplementation. A total of 144-sexed Ross 308 broiler chicks were randomly allocated into 3 dietary treatments. Each treatment was replicated 6 times with 8 birds per replicate (4 male and 4 female). Treatment group 1 served as threonine deficient group, fed with a diet with all limiting amino acids met except threonine as no synthetic form was supplied. Treatment group 2 served as threonine adequate high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Threonine; Broilers; Carcass characteristics; Litter quality; Intestinal morphology.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400753

The Complete Mitochondrial Genome of the Donganyellow Chicken and Its Phylogenetic Analyses
Provedor de dados: 89
Autores: Lin,Q; Jiang,GT; Li,YH; Yan,HF.
ABSTRACT Donganyellow chicken (Gallus gallusdomesticus, DYC) is one of the famous native breeds of Hunan province in China. It is the first time that the complete mitochondrialgenome sequence of DYC was reported. The total length of the mtDNA is16, 786bp. It contains 22transfer RNA genes, 2 ribosomal RNA genes,13 protein-coding genes and 1 D-loop region. The overall composition of the mtDNA is 30.27% for A, 23.74% for T, 32.50% for C and 13.49% for G. Phylogenetic analyses using N-J computational algorithms showed that the analyzed20Galliformes species are divided into three major clades: Phasianidae, Numidiidae and Odontophoridae. In addition, our work confirmed that DYCand Taoyuan chickenhave a closegenetic relationship with fellow tribal members Xuefeng...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gallus gallusdomesticus; Donganyellow chicken; Mitochondrial; Phylogenetic analyses.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100309

The Dietary Inclusion of Chickpea Seeds (Cicer Arietinum L.) Influences the Thermal Properties of Muscle Proteins, But Not the Texture of Drumstick Muscle in Broiler Chickens
Provedor de dados: 89
Autores: Muszyński,S; Tomaszewska,E; Kwiecień,M; Dobrowolski,P; Świetlicka,I; Tanaś,W; Sołowiej,B; Ejtel,M; Szcześniak,E; Tomczyk-Warunek,T.
ABSTRACT In this study, the effect of replacement of soybean meal with raw chickpea seeds as a primary protein source in the diet of broiler chicks on physical properties of drumstick muscle (m. gastrocnemius) was examined. One-day-old Ross 308 broilers (n=160) were fed soybean meal (n=80) or raw chickpea seeds (n=80) as a primary protein source for 42 days. Drumstick muscles, after dissection and storage for 24 h at 5°C, were subjected to texture profile analysis to determine changes in the structural and material integrity, and the thermal stability of muscle proteins were assessed on the basis of differential scanning calorimetry measurements. Light meromyosin, heavy meromyosin and sarcoplasmic proteins in the meat samples of broilers fed raw chickpea...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Analytical methods; Dietary protein; Muscle structure; Physical properties.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200302

The Differential Expression and Snp Analysis of the Ovoinhibitor Gene in the Ovaries of Laying Duck Breeds (Anas Platyrhynchos)
Provedor de dados: 89
Autores: Wu,Y; Liang,H; Zhang,H; Pi,JS; Pan,AL; Shen,J; Pu,YJ; Du,JP.
ABSTRACT Ovoinhibitor (OIH) is the main proteinase inhibitor in the egg white. In the present study, real-time quantitative PCR and Western-Blot were used to analyze different expression pattern of OIH in ovaries as a candidate gene of reproductive traits in Jingjiang ducks (JJ ducks) and Shaoxing ducks (SX ducks) during three laying stages. To study the polymorphism of the OIH gene in those two duck populations, we designed five pairs of primers to detect SNPs of exon 3-5, 5-6, 14-16 and intron 7, 9 of the OIH gene by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and DNA pool sequencing methods. The results showed that OIH expression increased during the laying stage in the ovaries of both duck breeds. The relative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Laying ducks (Anas platyrhynchos); Laying period; Gene expression; OIH; Ovaries.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200281

The Effect of a Balanced Diet Containing Yellow Lupin (Lupinus Luteus L.) on Carcass and Meat Quality of Broiler Ducks
Provedor de dados: 89
Autores: Biesek,J; Kuźniacka,J.
ABSTRACT The aim of this study was to compare the final productivity parameters, carcass and meat quality in ducks fed with yellow lupin (Lupinus luteus) as a protein source instead of soybean meal. 200 Cherry Valley ducks were divided into two equal groups. Control (1) was fed with soybean meal, experimental (2) was fed with yellow lupin. Productivity parameters were calculated. After 8 weeks of rearing, 10 ducks from each group were slaughtered. The pH of breast muscles was measured 15 minutes and 24 hours post-mortem. Carcasses were dissected and each carcass part was weighed. After dissection, breast and leg muscles were analysed for selected parameters of meat quality (water holding capacity, and colour). Additionally, drip loss in breasts was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Duck; Body weight; Carcass; Colour; Quality; Water-holding capacity; Yellow lupin.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200304

The effect of arginine dietary supplementation in broiler breeder hens on offspring humoral and cell-mediated immune responses
Provedor de dados: 89
Autores: Murakami,AE; Silva,LMS da; Fernandes,JIM; Silveira,TGV; Garcez Neto,AF.
The influence of supplementing the diet of broiler breeder hens with arginine (Arg) on their offspring's humoral and cell-mediated immune response was evaluated in two experiments. In experiments I and II, breeder hens were fed diets containing graded levels of Arg (0.943, 1.093, 1.243, 1.393 and 1.543% digestible Arg). In experiment I, the offspring was randomly grouped according to the treatment received by the breeder hens, with five levels of Arg in the maternal diet and six replicates, giving a total 30 experimental units. In experiment II, the offspring were grouped in accordance with the treatment received by the breeder hens; however, Arg was added to the starter diet (1.300, 1.450, 1.600, 1.750 and 1.900% digestible Arg) and also the growing diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arginine; Macrophage; Maternal diet; Offspring immunity.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200009

The effect of broiler market age on performance parameters and economics
Provedor de dados: 89
Autores: Schmidt,GS.
In the present study, 35 farmers contracted by an integration company were selected. Each farmer owned an average of seven poultry houses, and housed six flocks per year, with a total of 4.0 million housed broilers. Birds were grouped into 5 market ages (MA1=&lt;43, 43&lt;MA2=&lt;44, 44&lt;MA3=&lt;45, 45&lt;MA4=&lt;46, MA5&gt;46 days), and the following parameters were measured: average flock body weight (AFW), feed conversion ratio (FCR), livability (L), production efficiency index (PEI), production cost, and farmer's gross margin. MA significantly influenced all parameters, except production cost/kg broiler. The effects of farm and farm*MA interaction were not significant. Each day of MA increase resulted in increases of 68.43g and 0.039 units in AFW and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cost; Integrated companies; Performance.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400005

The Effect of Calcium and Available Phosphorus Levels on Performance, Egg Quality and Bone Characteristics of Japanese Quails at End of the Egg-Production Phase
Provedor de dados: 89
Autores: Ribeiro,CLN; Barreto,SLT; Reis,RS; Muniz,JCL; Viana,GS; Ribeiro Junior,V; Mendonça,MO; Ferreira,RC; DeGroot,AA.
ABSTRACT Calcium (Ca) and available phosphorus (avP) requirements for egg production are different between the beginning and the end of the egg-production cycle. The objective of this study was to estimate the Ca and avP requirements of Japanese quails at end of the production phase. In total, 256 Japanese quails with 48 weeks of age were randomly distributed in 2 x 2 factorial arrangement consisting of two Ca levels (29 and 38 g/kg) and two avP levels (1.5 and 3.0 g/kg), totaling four treatments with eight replicates of eight hens each. The variables evaluated were feed intake (FI); egg production (EP); marketable egg production (MEP); egg weight (EW); egg mass (EM); feed conversion ratio per egg mass (FCRM); feed conversion ratio per dozen eggs (FCRD);...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix; Bone development; Dicalcium phosphate; Eggshell; Bone mineral deposition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500033

THE EFFECT OF CICHORIUM INTYBUS L. ETHANOL EXTRACTION ON THE PATHOLOGICAL AND BIOMEDICAL INDEXES OF THE LIVER AND KIDNEY OF BROILERS REARED UNDER HEAT STRESS
Provedor de dados: 89
Autores: Khodadadi,M; Mousavinasab,SS; Khamesipour,F; Katsande,S.
ABSTRACT The use of compounds with antioxidant properties as a source of phelanoeid compounds is highly recommendable in the poultry industry. Therefore, the effect of Cichorium intybus L. herb on pathobiochemical indexes of chicken under heat stress was studied. After exposure to heat stress (from day 21 to day 42 of growth), hydroalcoholic extraction was provided to 270 broiler chicks randomly divided into six groups and placed in two distinct poultry houses (heat stress and normal conditions). The three groups were recipient group of Cichorium intybus L. (1); recipient group of vitamin C (2) and control group (3). The birds in one of the houses were exposed to heat stress conditions (35 °C for 8 hours) for a time period between 22 to 42 days and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat stress; Cichorium intybus L; Vitamin C; Broiler chicks.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300407

The effect of corn oil reduction in the diet on laying hen performance
Provedor de dados: 89
Autores: Harms,RH; Russell,GB; Bohnsack,CR; Merkel,WD.
Hy-Line W36 hens were fed diets containing zero or 6% corn oil (CO) from 26 to 38 wk of age. At 38 wk, the hens receiving the diet with 6% CO were divided into three groups. One group continued to receive the diet with 6% CO. The level of CO in the diet was reduced to zero or 3% in the other two groups. The hens previously fed the diet without CO continued to receive the control diet. Egg weight was significantly heavier when the diet contained 6% CO and was not significantly reduced when the level of CO was reduced to 3%. Egg weight from control hens was significantly lower than the EW from hens that had received CO in the diet until 38 wk but none thereafter. Hens fed the diet with CO consumed more energy than hens fed the control diet. However, when CO...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commercial layer; Corn oil; Egg weight; Energy intake.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300009

The Effect of Cyclic Heat Stress Applied to Different Broiler Chicken Brooding Stages on Animal Performance and Carcass Yield
Provedor de dados: 89
Autores: Marchini,CFP; Fernandes,EA; Nascimento,MRBM; Araújo,EG; Guimarães,EC; Bueno,JPR; Fagundes,NS; Café,MB.
ABSTRACT The objective of this study was to evaluate the performance and carcass yield of broilers submitted to heat stress during different rearing stages. A total of 840 one-day-old CobbAvian48TM male broilers were housed in an experimental house equipped with conventional ventilation system and foggers. Birds were distributed according to a completely randomized design into four treatments, with six replicates of 35 birds each. The treatments consisted of: T1 (control) - birds reared under natural temperature and relative humidity conditions from 1 to 42 days of age; T2 - birds submitted to heat stress (HS) from 16 to 21 days of age; T3 - birds submitted to HS from 22 to 42 days of age; and T4 - birds submitted to HS from 16 to 42 days of age. Birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air humidity; Carcass traits; Environmental temperature; Poultry; Thermal stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400765

The Effect of Dietary Garlic (Allium Sativum), Black Cumin (Nigella Sativa) and Their Combination on Performance, Intestine Morphometry, Serum Biochemistry and Antioxidant Status of Broiler Chickens
Provedor de dados: 89
Autores: Aydogan,I; Yildirim,E; Kurum,A; Bolat,D; Cinar,M; Basalan,M; Yigit,A.
ABSTRACT This study was conducted to examine the effects of garlic (G), black cumin (BC) and G+BC within the broiler rations, on performance, relative organ weights, intestinal morphology, serum biochemistry and plasma total oxidant/ antioxidant status. Two hundred broilers chicks (Ross 308) were used and they were divided into 4 groups consisting of 5 subgroups of 10 animals each. The trial was ended on the 35th day. No addition was made to the control group ration. 5g / kg garlic (G), 5g / kg black cumin (BC) and 5g / kg G + 5g / kg BC were added to the experimental group rations, respectively. There was no statistical difference among the trial groups in terms of BWG, FI, FCR and relative organ weights (p&gt;0.05). Serum total protein (p&lt;0.05) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant status; Black Cumin; Broiler performance; Garlic; Serum biochemistry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400312

The effect of dietary phytase on broiler performance and digestive, bone, and blood biochemistry characteristics
Provedor de dados: 89
Autores: Sousa,JPL de; Albino,LFT; Vaz,RGMV; Rodrigues,KF; Da Silva,GF; Renno,LN; Barros,VRSM; Kaneko,IN.
The dietary inclusion of phytase increases nutrient and energy bioavailability for broilers. The effect of phytase increases nutrients and energy bioavailability for either the objective of this experiment was to evaluate the influence of nutrient and energy reduction in diets supplemented with phytase on the performance, gastrointestinal pH, organ and bone composition, and blood biochemistry of broilers between eight and 21 days of age. In the study, 1.120 male Cobb 500(r) broilers, with 161±1g average weight, were used. At eight days of age, birds were distributed according to a completely randomized experimental design with seven treatments in a 3x2+1 factorial arrangement with eight replicates of 20 broiler each. Treatments corresponded to reduction of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonism; Digestible amino acid; Egg components; Haugh units.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100069

The Effect of Dietary Tarragon (Artemisia Dracunculus) Powders in Different Levels on Carcass Characteristics and Some Internal Organ’s Weight of Broiler Chickens
Provedor de dados: 89
Autores: Yildirim,F; Tunç,MA.
ABSTRACT This study was conducted to investigate the effects of different levels of Tarragon powder on head, chicken feet, some internal organs and carcass characteristics of broiler chickens. One day -old two hundred forty Ross 308 male broilers were randomly allocated into four treatments and six replicates per treatment. At each replicate ten birds were used. All birds at 42 days had ad libitum access to water and feed and were exposed to a 23L:1D lighting program. The diets were set on the basis of corn, soybean and wheat meal, formulated according to the recommendations of the Ross 308 manual (starter days 1-14, grower days 15-37, and finisher days 38-42), and offered as mash. The tarragon plant used in the research was purchased from a vegetable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicks; Carcass; Internal Organs; Tarragon Powder.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100179

The Effect of Different Levels of Lentil by Product on Growth Performance, Carcass Traits and Egg Yield in Quail (Coturnix Coturnix Japonica)
Provedor de dados: 89
Autores: Ayaşan,T; Sogut,B; Inci,H.
ABSTRACT The subject of this study was to evaluate the effects of lentil byproduct (LP) on growth performance, carcass traits and egg yield of quail (Coturnix coturnix Japonica). To achieve this goal, a total of 600 0-day-old quail chicks were used. The birds were divided into 5 groups with 3 replicates. The 1st, 2nd, 3rd, 4th and 5th groups received 0, 5, 10, 15 and 20% lentil byproduct, respectively. All the diets were prepared as isonitrogenous and isocaloric. As a result of this study, the highest live body weights of quails as Laudadio mixed gender were observed in the 3rd (195.5 g) and 5th (195.3 g) groups at the end of the study, however the differences between the control and treatment groups were not significant (p&gt;0.05). Similar results were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass; Egg production; Fattening; Lentil byproduct; Quail; Yolk color.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400773

The Effect of Early Post Hatch Feeding Times on the Growth and Development of the Gastrointestinal Tract of Mule Ducklings to Five Days of Age
Provedor de dados: 89
Autores: Williams,MA; Lallo,CHO; Sundaram,V.
ABSTRACT The present study evaluated the effects of early post-hatch feeding on the growth and development of the gastrointestinal tract (GIT) of mule ducks reared in the humid tropics to five days of age. A total of 120 newly hatched mule ducklings were selected and randomly assigned to four treatment groups. Each with 30 birds, (T1, T2, T3, and T4) is based on four feeding regimes (feed accessed at 3, 24, 36, and 48 hours post-hatch) for five days. The ducklings were euthanized each day and the parameters: small intestinal samples were processed for histological analysis and histometrical parameters including villi length and width, crypt width and depth, and the number of goblet cells per villus was measured, statistically analyzed using ANOVA and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post hatch feed times; Growth and development; Small intestine; Gastrointestinal tract; Mule ducklings.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100311

The Effect of Eggshell Thickness on Hatching Traits of Partridges
Provedor de dados: 89
Autores: Yamak,US; Sarica,M; Boz,MA; Ucar,A.
ABSTRACT Incubation is an important factor in poultry production, particularly in species with relatively low fertility and hatchability rates. This study examined the effect of eggshell thickness on hatching traits of partridges (A. chukar). A total of 462 eggs from intensively reared partridges were separated into three groups according to eggshell thickness, which was measured ultrasonically before incubation. Hatchability, chick weight, and chick length were assessed at the end of the incubation period. Hatching times were recorded during hatching. Embryonic mortalities in unhatched eggs were classified according to mortality stage at the end of incubation. The effect of eggshell thickness on hatchability was found to be insignificant for all groups....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell thickness; Partridge; Incubation; Ultrasound; Hatching time.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500013

The Effect of Eggshell Thickness on the Hatchability of Guinea Fowl and Pheasants
Provedor de dados: 89
Autores: Yamak,US; Boz,MA; Ucar,A; Sarica,M; Onder,H.
ABSTRACT Successful incubation affects the number of healthy chicks in all poultry species. This study examined the effect of eggshell thickness on the hatching rates of guinea fowl and pheasant eggs. In total, 964 guinea fowl and 1,728 pheasant eggs were used in the study. Eggshell thickness was measured directly with an ultrasound gauge. Thicknesses ranged between 0.27-0.47 mm in guinea fowl and 0.24-0.49 mm in pheasant eggs. Incubation periods were 28 days for guinea fowl and 25 days for pheasant eggs. At the end of the incubation period, unhatched eggs were broken to identify the causes of embryonic mortality. Eggs were classified as thin-, medium- and thick-shelled, and hatching rates were calculated as a function of eggshell thickness. Differences in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell thickness; Ultrasound; Incubation; Guinea fowl; Pheasant.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600049

The Effect of High Temperature on Viability, Proliferation, Apoptosis and Anti-oxidant Status of Chicken Embryonic Fibroblast Cells
Provedor de dados: 89
Autores: Ibtisham,F; Zhao,Y; Nawab,A; Liguang,H; Wu,J; Xiao,M; Zhao,Z; An,L.
ABSTRACT The effects of oxidative stress induced by high temperature on the cell viability, proliferation, apoptosis and oxidative status of chicken embryonic fibroblasts (CEF) were analyzed. The viability, proliferation, apoptotic and anti-oxidative status were measured after incubating CEF at the temperatures of 37ºC (control) and 40-44ºC (experimental groups) for 6,12 and 24 hours. The results showed that at high temperature (42-43ºC), the viability of CEF cells decreased after 6, 12 and 24 h of incubation, but the difference was significant only at 43ºC. Cell proliferation was significantly reduced at 44oC/6h. The apoptotic rate of CEF cells was increased following heat treatments in a time-dependent manner. ROS formation increased with increasing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoptosis; Chicken embryonic fibroblast; Cell proliferation; Heat stress; Oxidative stress.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300463

The Effect of Humic Acid Substances on the Thyroid Function and Structure in Lead Poisoning
Provedor de dados: 89
Autores: Sahin,A; Iskender,H; Terim,Kapakin KA; Altinkaynak,K; Hayirli,A; Gonultas,A; Kaynar,O.
ABSTRACT Lead (Pb) is a heavy metal, which adversely affects thyroid gland function and structure. Due to its high molecular weight and abundant functional groups, humic acid substances (HAS) can form chelates with heavy metals. The experiment was conducted to evaluate the prophylactic effect of HAS on thyroid hormone levels and histopathological lesions of laying hens exposed to lead (Pb) poisoning. After a week of adaptation, 192 Lohmann White laying hens (25 weeks of age) were fed one of four diets: a basal diet (BD) or the BD with HAS (0.15%), with Pb (0.3 g/kg), or with both. Experimental groups were replicated in 12 cages, with four hens each. Pb poisoning did not alter triiodothyronine (FT3; 3.22 ± 0.20 ng/dL) or thyroxine (FT4; 0.71 ± 0.08 ng/dL)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lead poisoning; Humic acid substances; Thyroid gland; Chicken.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400649

The Effect of Hydrated Sodium Calcium Aluminosilicate on Fatty Liver and the Composition of the Intestinal Microbiota in Overfed Landes Geese
Provedor de dados: 89
Autores: Tang,J; Fang,Q; Lu,M; Shao,R; Shen,J; Lu,L; Niu,D.
ABSTRACT Goose fatty liver is a delicious food product and the overfeeding will cause the abnormal physiology of the geese. The objective of this study was to investigate the effect of supplementation with hydrated sodium calcium aluminosilicate (HSCAS) on the fatty liver, ileal and cecal microbiota of Landes geese during overfeeding. Sixty 70-day-old Landes geese (body weight= 3.0 ± 0.05 kg) were randomly divided into three groups, two of which were overfed with whole corn supplemented with or without HSCAS for 20 days when the fatty liver reaches to the maximum size and the negative control group was ad libitum access to the corn basal diet. The intestinal contents of the ileum and cecum from three geese per group were used for high-throughput...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Landes geese; Microbial diversity; Overfeeding; Hydrated sodium calcium aluminosilicate; High-throughput sequencing.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200393

The Effect of Jatropha Curcas Seed Meal on Growth Performance and Internal Organs Development and Lesions in Broiler Chickens
Provedor de dados: 89
Autores: Barros,CR; Rodrigues,MAM; Nunes,FM; Kasuya,MCM; Luz,JMR da; Alves,A; Ferreira,LMM; Pinheiro,V; Mourão,JL.
ABSTRACT The meal of Jatropha curcas (JCM) seed is a by-product of the biofuel industry and may potentially to be used as animal feed. However, its toxicity has prevented its utilization in animal nutrition mainly due to its high concentration of phorbol esters. This study was conducted to evaluate the effects of the dietary inclusion of JCM on the growth performance, feed digestibility and internal organs development of broilers. Thirty two 48-d-old Ross 308 broiler chickens housed in 16 pens (2 birds/pen) were used in this study. Birds were randomly allocated to dietary treatments comprising four JCM levels (negative control, 25, 50, or 100 g JCM/kg of diet) for four weeks. Results showed that increasing levels of JCM had a negative impact on broiler...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Jatropha curcas; Phorbol ester; Toxicity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000001

The Effect of Lentil-By Product on Growth Performance and Carcass Traits of Heavy White Turkeys
Provedor de dados: 89
Autores: Söğüt,B; Kurbal,ÖF; İnci,H; Ayaşan,T.
ABSTRACT The subject of this study was to figure out the effects of lentil by product (LP) on growth performance and carcass traits of the white heavy turkeys. To accomplish this goal, a total of 210 day old big-6 turkey chicks were used. The birds were divided into 7 seven groups with 3 replicates. The 1st, 2nd, 3rd, 4th, 5th, 6th and 7th groups received 0, 5, 10, 15, 20, 25 and 30 % lentil by product, respectively. All the diets were made as izonitrojenic and izocaloric. The highest live body weights of males and females were observed in the control group at the end of the 15th week, which was the time of slaughtering of females, however the differences between the control and the 2nd, 3rd and 4th groups were not significant (p&gt;0.05). The same...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lentil byproduct; Turkey; Fattening performance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200357

The Effect of Lycopene Addition on the Chemical Composition, Sensory Attributes and Physicochemical Properties of Steamed and Grilled Turkey Breast
Provedor de dados: 89
Autores: Skiepko,N; Chwastowska-Siwiecka,I; Kondratowicz,J; Mikulski,D.
ABSTRACT The aim of this study was to determine the effect of lycopene addition to the curing mixture for steamed and grilled breast muscles on the chemical composition, sensory attributes and physicochemical parameters of the final products. The experimental material comprised a total of 48 breast muscles of Hybrid XL turkeys aged 15 weeks and fed commercial pelleted diets. The material was divided into three groups (control, experimental groups I and II). Sixteen breast muscles (8 left and 8 right) were assigned to each group. Control group samples were immediately transported to a laboratory. The remaining 32 muscles were steamed and grilled, where 16 samples were cured before heat treatment. The curing brine contained tomato peel extract standardized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carotenoids; Lycopene; Poultry; Quality of meat; Final product.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200319

The Effect of Olive Cake, with or Without Enzymes Supplementation, on Growth Performance, Carcass Characteristics, Lymphoid Organs and Lipid Metabolism of Broiler Chickens
Provedor de dados: 89
Autores: Al-Harthi,MA.
ABSTRACT An experiment was carried out to investigate the effect of using olive cake (OC) in broiler diets, when it is supplemented with multi-enzymes or phytase enzyme. The OC was included in isocaloric, isonitorgneous diets at 5 and 10% levels and fed to broilers from 1-28 days of age. Experimental diets were fed with or without either of the two enzymes: galzym or phytase. This resulted in 3 OC levels (0, 5, 10%) × 3 enzyme supplementations (no enzyme, galzym enzyme, phytase enzyme). This included nine treatments, and each treatment was replicated eight times with seven broiler chickens each. Feed intake, feed conversion ratio, body weight gain, survival rate, dressing, inner and immune organ´s weights (compared to live body weight); and blood lipids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Enzymes; Olive cake; Carcasses parameters; Lymphoid organs and lipid metabolism constituents.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500083

The Effect of Serial Culture and Storage on the Protective Potential of a Competitive Exclusion Preparation
Provedor de dados: 89
Autores: Almeida,WAF; Berchieri Junior,A; Barrow,PA.
The competitive exclusion method (EC) was used to protect day-old birds against colonisation of the intestinal tract by Salmonella enterica serovar Enteritidis (SE). The culture prepared in nutrient broth incubated at 37ºC/24 h inhibited SE growth in the caecal contents. The beneficial effect was also observed after serial passage of the feces culture for up to 14 times. The material obtained after 12 serial sub-cultures after storage for 28 days at 4-6ºC also kept its action on SE.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobic faecal culture; Competitive exclusion; Salmonella Enteritidis.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200006

The Effect of Supplementing Tea Polyphenols in Diet of Laying Hens on Yolk Cholesterol Content and Production Performance
Provedor de dados: 89
Autores: Wang,Y; Yang,Q; Lin,P; Li,C; Lu,Y; Daijun,S.
ABSTRACT This study was conducted to evaluate the influence of supplementing tea polyphenols (TP) in diet of laying hens on yolk cholesterol content and production performance. A total of 1800 Lohmann laying hens aged 48 weeks were randomly allocated to 6 groups. Each group consisted of 6 replicates with 50 layers. The feeding experiment was 4 weeks including one-week acclimatization. Layers fed basal diet supplemented with 0, 150, 200, 250, 300 and 350 mg TP/kg diet, respectively. The results showed that average daily feed intake (ADFI), feed conversion ratio (FCR), average egg weight (AEW), laying rate and the indicators of egg quality were not significantly affected by the diet supplemented with 300 mg/kg TP (p&gt;0.05). However, yolk cholesterol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Laying hens; Production performance; Tea polyphenols; Yolk cholesterol content.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000200302

The Effect of Thyme Essential Oil (Thymus Vulgaris) Added to Quail Diets on Performance, Some Blood Parameters, and the Antioxidative Metabolism of the Serum and Liver Tissues
Provedor de dados: 89
Autores: Gumus,R; Ercan,N; Imik,H.
ABSTRACT This study was conducted to determine the effect of diets containing different levels of thyme essential oil (TEO) on performance, some serum parameters and the antioxidative metabolism of the serum and liver tissues in quails. A total number of 200 sixteen-days-old Japanese quails (Coturnix coturnix japonica) were used in the study. The animals were divided into 4 groups; the control group was fed only basal diet but groups TEO1, TEO2 and TEO3 had thyme essential oil of 150, 300 and 450 mg/kg, respectively, added to their diets. Body weight and daily weight gain increased with higher levels of thyme essential oil in the feed, yet a statistically significant increase was detected in only group TEO3 (p&lt;0.05). Furthermore, in all of the groups...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Quail; Liver; Performance; Thyme essential oil.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200297

The effects of a combination of garlic, oyster mushroom and propolis extract in comparison to antibiotic on growth performance, some blood parameters and nutrients digestibility of male broilers
Provedor de dados: 89
Autores: Daneshmand,A; Sadeghi,GH; Karimi,A.
A study was conducted to evaluate the combined effects of garlic, oyster mushroom and propolis extract on the growth performance, organ weights, antibody response to Newcastle Disease Virus (NDV), serum lipid concentrations and nutrient digestibility of male broilers. A total of 192 day old chicks (Ross 308) were randomly assigned to 3 treatments with 4 replications (16 birds per replication). Experimental treatments were a maize- soybean based diet as control, control diet supplemented with a combination of garlic (30 g/kg), oyster mushroom (2 g/kg) and propolis extract (0.2 g/kg) known as GMP, and control diet supplemented with Virginamycin (0.25 g/kg) as antibiotic. The inclusion of GMP decreased (p &lt; 0.05) live body weight, average daily gain and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Garlic; Mushroom; Propolis; Performance; Immunity; Broiler.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200009

The effects of alternative forced-molting methods on the performance and egg quality of commercial layers
Provedor de dados: 89
Autores: Molino,AB; Garcia,EA; Berto,DA; Pelícia,K; Silva,AP; Vercese,F.
This study aimed at studying alternative methods to induce molting and to compare them with the conventional forced-molting method (fasting). In the experiment, 420 70-week-old layers were used. The total experimental period was 140 days. Molting was induced during the first 28 days, when birds were submitted to the experimental treatments, and bird performance and egg quality parameters were determined during 112 subsequent days. A completely randomized experimental design was applied in a 5x2 factorial arrangement of five feed restriction regimes (0, 15, 30, 45, or 60g feed/bird/day) and with or without the addition of coarse-particle limestone to the feed, with seven replicates of six birds each. Egg quality was evaluated at the end of each 28-day...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell thickness; Feed restriction; Limestone; Welfare.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200006

The effects of cinnamon powder feeding on some blood metabolites in broiler chicks
Provedor de dados: 89
Autores: Koochaksaraie,RR; Irani,M; Gharavysi,S.
The effect of cinnamon powder (CNP) feeding on some blood metabolites in broiler chicks was studied in a 49-day experiment. The feeding program consisted of a starter diet until day 21, a grower diet until day 42 and a finisher diet until day 49. There were five treatments: a negative control diet, without the additive (control: T1); 250 mg/kg (T2); 500 mg/kg (T3); 1000 mg/kg (T4); and 2000 mg/kg (T5) of CNP in the diet. A total of 320 one-day-old mixed-sex broilers (Ross 308) were distributed into 16 pens with 20 chickens each, comprising 3 replicates per treatment (except for T1, which had 4 replicates). Serum glucose was measured weekly and reported periodically. At the end of the experiment serum cholesterol, triglycerides, aspartate aminotransferase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cinnamomum; Glucose.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300006

The Effects of Dietary Flavonoid Supplementation on the Antioxidant Status of Laying Hens
Provedor de dados: 89
Autores: Iskender,H; Yenice,G; Dokumacioglu,E; Kaynar,O; Hayirli,A; Kaya,A.
ABSTRACT Ninety-six 28-week-old Lohmann White laying hens were utilized to test the antioxidant effects of flavonoids (hesperidin, naringin, and quercetin at 0.5 g/kg diet) during an 8-wk experimental period. At the end of the experiment blood samples were collected to determine total protein, cholesterol, and malondialdehyde (MDA) serum levels as well as activities of glutathione reductase (GR), glutathione peroxidase (GSH-Px), glutathione-S-transferase (GST), and superoxide dismutase (SOD) and level of glutathione (GSH) in erythrocyte lysates. Data were analyzed using one-way ANOVA. Naringin supplementation did not alter serum cholesterol concentration, whereas hesperidin and quercetin supplementations decreased serum cholesterol concentration. Naringin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Flavonoid; Hesperidin; Naringin; Quercetin.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400663

The Effects of Different Amount of Protein and Vitamin e Supplementation in Rations on Lipid and Antioxidant Metabolism of Broilers Exposed to Heat Stress
Provedor de dados: 89
Autores: Erol,HS; Imik,H; Gumus,R; Halici,M.
ABSTRACT Heat stress, causes economic losses and has negative effects on both broiler husbandry and animal welfare. Nutritional strategies are applied for minimizing the negative effects of heat stress. In the present study, at the finishing period (24-39 days of age) of heat stress, the effects of diet involving 21% and 19% proteins and vitamin E on lipid metabolism and antioxidant mechanism of action, aimed to be identified. This study was carried out in six groups as: HPC (24oC heat + 21% crude protein (CP)), HPS (34oC heat + 21% CP), LPC (24oC heat + 19% CP), LPS (34oC heat + 19% CP), HPSVE (34oC heat + 21% CP + Vitamin E) and LPSVE (34oC heat + 19% CP + vitamin E) groups. Superficial pectoral muscles (breast) and liver tissues were used for oxidative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heat stress; Broiler; Protein; Vitamin E; Oxidative stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200289

The Effects of Different Eggshell Temperatures Between Embryonic Day 10 and 18 on Broiler Performance and Susceptibility to Ascites
Provedor de dados: 89
Autores: Ipek,A; Sahan,U; Sozcu,A.
ABSTRACTThe aim of the current study was to determine the effects of low (33.3-36.7 ˚C), control (37.8-38.2 ˚C) and high (38.9-40.0 ˚C) eggshell temperatures (ESTs) between days 10-18 of incubation on broiler performance and susceptibility to ascites. The effects of different ESTs on hatchling weight were significant. The highest residual yolk sac weight (7.7 g) and relative yolk sac weight (18.7%) were observed in high EST group, whereas the highest yolk-free body weight (36.22 g) was obtained in the control group. Relative post-hatch heart weight was lower in the high EST group (0.64%) compared with the control (0.84%) and low (0.88%) EST groups. At 6 weeks of age, body weights of broilers of the low, control, and high EST groups were 2172.6, 2543.9,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascites; Broiler; Eggshell temperature; Incubation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300387

The Effects of Different Types of Antioxidants (Se, Vitamin E and Carotenoids) in Broiler Diets on the Growth Performance, Skin Pigmentation and Liver and Plasma Antioxidant Concentrations
Provedor de dados: 89
Autores: Karadas,F; Erdoğan,S; Kor,D; Oto,G; Uluman,M.
Abstract This study investigated the effects of the addition of different antioxidants to broiler diets on their live performance, liver antioxidant composition and concentrations, immune response, and meat and skin color. A total of 945 three-day-old Ross 308 broiler chicks of both genders were randomly allocated to one of nine dietary treatments (n=105), with three replicates 35 chicks per pen, as follows: T1: control (commercially available corn-and soybean-based broiler diet); T2: selenium (control+0.5 mg/kg Sel-PlexTMSe yeast); T3: vitamin E (control+200 mg/kg Kavimix-E-50 a-tocopherol acetate); T4: lutein (control+100 mg/kg 5% Lutein Beads XB); T5: lycopene (control+100 mg/kg 5% Lyco Beads XB);T6: canthaxanthin (control+25 mg/kg 10%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Antioxidants; Carotenoids; Performance; Immune response; Pigmentation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100101

The effects of Environmental Enrichment on Some Physiological and Behavioral Parameters of Broiler Chicks
Provedor de dados: 89
Autores: Yildirim,M; Taskin,A.
ABSTRACT This study aims to examine the effects of environmental enrichment (EE) practices on some physiological and behavioral parameters of broiler chicks. A total of 280 one-day old Ross 308 mixed-sex broiler chicks with an average initial body weight of 44.5±0.37 g were used in a 42-d trial. Broiler chicks were randomly allocated to 20 pens composed of 14 birds in 1x1.4m sized floor area. Each of the EE treatment consisted of 5 replicate pens (70 chickens per treatment). The treatments were 1) control; 2) perch for EE; 3) ball for EE; 4) mirror for EE; and 5) dust for EE. Final body weights, tonic immobility test results, and rectal temperatures were recorded. Spleen, liver, and bursa fabricius weights were measured. The blood biochemistry of birds was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Broiler; Environmental enrichment; Tonic immobility.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200355

The Effects of Fucoxanthin Dietary Inclusion on the Growth Performance, Antioxidant Metabolism and Meat Quality of Broilers
Provedor de dados: 89
Autores: Gumus,R; Gelen,S Urcar; Koseoglu,S; Ozkanlar,S; Ceylan,ZG; Imik,H.
ABSTRACT Fucoxanthin is a major carotenoid found in marine brown algae. This study investigated the impact of fucoxanthin on the growth performance, antioxidant metabolism and meat quality of broilers. Overall, 180 one-day-old male broiler chicks (Ross 308) were assigned to one control group (CONT) and 2 treatment groups (FUCO1 and FUCO2), with six replicates of 10 birds each. The CONT, FUCO1 and FUCO2 birds were fed a basal diet supplemented with 0, 100 and 200 mg/kg of fucoxanthin, respectively. Average body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR) were similar among the groups. Fucoxanthin increased catalase (CAT) and superoxide dismutase (SOD) activities and glutathione (GSH) levels (p&lt;0.01), and reduced malondialdehyde...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Broiler; Fucoxanthin; Meat quality; Performance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300487

The effects of in-ovo injection of glucose on hatchability, hatching weight and subsequent performance of newly-hatched chicks
Provedor de dados: 89
Autores: Salmanzadeh,M.
This experiment was conducted to determine the effects of an in-ovo injection of glucose on hatchability, weight and subsequent performances of newly-hatched chickens. The 720 fertile eggs used in this experiment were obtained from a Cobb-500 broiler breeder flock of 28 weeks of age. Treatments were the following: 1) control group (withou- injection), 2) group injected with 0.5 ml deionized water (sham group), 3) group injected with 0.5 ml glucose 15% in deionized water, 4) group injected with 0.5 ml glucose 20% in deionized water and 5) group injected with 0.5 ml glucose 25% in deionized water. There werh four replicates per treatment and 36 eggs per replicate. The experimental design was a completely randomized design. Upon hatch, hatchability and weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; In-ovo injection; Glucose; Hatching traits; Performance.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200008

The Effects of In-Ovo Injection of Propolis on Egg Hatchability and Starter Live Performance of Japanese Quails
Provedor de dados: 89
Autores: Aygun,A.
ABSTRACT The purpose of this study was to determine the effects of in-ovo injection of a propolis water extract on hatchability, embryonic mortality, starter live performance, and livability of Japanese quails. In total, 500 fresh hatching eggs were randomly distributed into five treatment groups of 100 eggs per treatment with four replicates of 25 eggs each. On day 14 of incubation, eggs from group 1 were not injected (control), group 2 was injected with distilled water (water), group 3 was injected with 1% propolis water extract (1% propolis), group 4 was injected with 2% propolis water extract (2% propolis), and group 5 was injected with 3% propolis water extract (3% propolis). A completely randomized design was applied, and data were analyzed using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In-ovo feeding; Propolis; Hatching traits; Quail.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600083

The Effects of Licorice (Glycyrrhriza glabra) Root on Performance, Some Serum Parameters and Antioxidant Capacity of Laying Hens
Provedor de dados: 89
Autores: Dogan,S Canogullari; Baylan,M; Erdoğan,Z; Küçükgül,A; Bulancak,A.
ABSTRACT The current study was conducted to determine the effects of the licorice root (Glycyrrhriza glabra) in laying hens diets on performance, egg cholesterol, some plasma parameters and antioxidant capacity. One hundred, 40-week old laying hens were divided into four groups, each group consisted of 25 hens and were placed in individual cages. The mean of the initial body weight of laying hens was 1829.18±9.595 g. Commercial laying hen diet was supplemented with 0, 0.5, 1.0 and 2.0% levels of licorice root powder and four different dietary groups were formed. From the experimental findings, it was ascertained that the licorice root supplementation had no significant effect on egg weight and feed conversion ratio (p&gt;0.05), but feed consumption...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant capacity; Egg cholesterol; Glycyrrhriza glabra; Laying hen; Performance; Some plasma parameters.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400699

The Effects of Perch Cooling on Behavior, Welfare Criteria, Performance, and Litter Quality of Broilers Reared at High Temperatures with Different Litter Thicknesses
Provedor de dados: 89
Autores: Fidan,ED; Kaya,M; Nazligul,A; Türkyilmaz,MK.
ABSTRACT The first aim of this study was to investigate the effects of perch cooling and different litter thicknesses on litter quality of the housing facility, welfare criteria (incidence of footpad and hock burns, gait score, plumage cleanliness and damages), heterophil/lymphocyte ratio, growth, and carcass compositions of broilers reared at high ambient temperature. Secondly, the study was conducted to determine whether cooled perches would be preferred by broiler chickens exposed to a hot environment, and subsequently, whether the utilization of these perches would improve the welfare and performance of broilers, beyond those provided by non-cooled perches. A total of 459 1-day-old male broiler chicks were randomly assigned to nine treatment groups...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Cool perch; Footpad dermatitis; Heterophil/lymphocyte ratio; Perching.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000300306

The effects of Post-Hatch Feeding with Betaine on the Intestinal Development of Broiler Chickens
Provedor de dados: 89
Autores: Norouzian,H; Alirezaei,M; Dezfoulian,O; Taati,M.
ABSTRACT The capacity of the chicken intestinal tract to digest and absorb nutrients is not fully developed on the day of hatch. The aim of this study was to investigate the role of betaine on the intestinal development of broiler chickens, including brush border enzyme activities indices and morphological changes during the first week of growth. Fiftyone-day-old Ross 308 broiler chickens were randomly distributed into five groups: control (C), low methionine(LM), low methionine plus betaine (LM+B), betaine 1 (B1) and betaine 2 (B2). Betaine was dissolved with a concentration of 500 mg/L in the drinking water of LM+B and B1groups and a concentration of 1000 mg/L in the B2 group. Histological assessment showed lower duodenal crypt depth and villi...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intestinal development; Betaine; Broilers; Morphology; Brush border enzymes.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300403

The Effects of Sodium Chloride versus Sodium Bicarbonate at the Same Dietary Sodium Concentration on Efficacy of Dietary Phytase and a Carbohydrase-Protease Cocktail in Broilers
Provedor de dados: 89
Autores: Argüelles-Ramos,M; Brake,J.
ABSTRACT A trial was conducted to determine the effect of phytase (PHY) or a carbohydrase/protease cocktail (CPX) on broilers fed diets with two different levels of chloride (0.28% or 0.43%) created by altering dietary salt (NaCl) and sodium bicarbonate (NaHCO3). There were 6 combination dietary treatments (3 enzyme x 2 NaCl treatments) applied to 4 replicate pens. The treatments were as follows: Control diet (CON), CON+PHY and CON+CPX, with 0.5% or 0.25% NaCl. The 0.25% NaCl versions contained 0.35% sodium bicarbonate. The 0.5% salt versions had no sodium bicarbonate. Replicate pen BW, and feed consumption (FC) were measured at 1, 14, and 35 d, and mortality was weighed daily for feed conversion ratio (FCR) calculations. Feed consumption at 14 d tended to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carbohydrase-protease cocktails; Chloride; Phytase; Sodium bicarbonate.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200200

The Effects of Threonine on Performance Parameters, Carcass Traits, Visceral Organ Indices and Serum Biochemical Parameters of Linwu Ducks, Aged 4 to 8 Weeks
Provedor de dados: 89
Autores: Jiang,G; Li,C; Huang,X; Zhang,X; Hu,Y; Wang,X; Wu,D; Dai,Q.
ABSTRACT This study was conducted to establish dietary threonine (Thr) levels for Linwu ducks, aged 4 to 8 wk. Experimental diets formulated to contain 0.56, 0.61, 0.66, 0.71, 0.76, and 0.81% Thr fed to Linwu ducks. A total of 360 healthy Linwu female ducks with similar body weight (1183.89±3.83 g) were randomly divided into six groups, with five replicates in each group, and 12 ducks in each replicate. Samples were collected at 8 wk for the determination of growth performance, carcass traits, visceral organ indices, and serum biochemical parameters. As a result of this study, Thr level had no significant influence on the final weight, the daily gain, feed/gain ratio, and average daily intake (p&gt;0.05). Similarly, there were no significant effects of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linwu duck; Threonine requirement; Growth performance; Carcass traits; Biochemical parameters.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200387

The Effects of Two Different Cleaning and Disinfection Programs on Broiler Performance and Microbiological Status of Broiler Houses
Provedor de dados: 89
Autores: Burbarelli,MFC; Merseguel,CEB; Ribeiro,PAP; Lelis,KD; Polycarpo,GV; Carão,ACP; Bordin,RA; Fernandes,AM; Souza,RLM; Moro,MEG; Albuquerque,R.
ABSTRACT The objective of this study was to investigate the influence of two cleaning and disinfection programs on broiler performance and on the microbiological status of the facilities. This trial was an observational study of comparative character. Two experiments were conducted, with 960 birds each. Both experiments were carried out in a positive-pressure broiler house. Broilers were distributed in pens equipped with a bell drinker and a tube feeder each. In the first experiment, new wood shavings were used as litter material, and in the second, reused wood shavings were used. Two treatments with16 replicates of 30 birds each were evaluated. The regular treatment consisted of dry and wet organic matter removal, followed by washing. The European...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry; Health; Biosecurity; Disinfectants.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400575

The Effects of Using Garlic Extract for Quail Hatching Egg Disinfection on Hatching Results and Performance
Provedor de dados: 89
Autores: Baylan,M; Akpınar,GC; Canogullari,SD; Ayasan,T.
ABSTRACT This experiment was carried out to determine the effects of using garlic extract (Allium sativum) as an alternative to formaldehyde for the disinfection of hatching eggs on hatching traits and growth performance of quails. Four treatments, with 240 hatching eggs each, were evaluated: egg immersion in two different levels (2.5% and 5.0%) of garlic extract (garlic-1, garlic-2), formaldehyde fumigation (positive control), and eggs not submitted to disinfection (negative control). Mid-term and late embryomortality, pipped egg, and culled chick rates were not influenced by the (p&gt;0.05). The highest (p&lt;0.05) early embryo mortality rate was detected in the formaldehyde treatment (9.99%), and the lowest in garlic-2 treatment (2.68%). Hatchability of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quail; Hatching eggs; Disinfection; Garlic extract.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200343

The Efficiency of AMEn and TMEn Utilization for NE in Broiler Diets
Provedor de dados: 89
Autores: Yaghobfar,A.
ABSTRACT The experiment was conducted to evaluate the feed intake, body weight gain, total energy (kJ), protein (g) intake, energy and protein efficiency ratio (EER, PER), net energy, and metabolic body weight, on two commercial broiler chickens (Arian and Ross 308 strains). Four treatmentsincluded diets formulated based onAMEn(kJ/g) Total Amino Acid (TAA) (T1), AMEn(kJ/g) Digestible Amino Acid (T2), TMEn (kJ/g) Total Amino Acid (T3), and TMEn (kJ/g) Digestible Amino Acid (DAA) (T4) for commercial broilers chickens. The findings of the study indicated that AMEn or TMEn treatments yielded improved utilization of net energy in 42 days, but did not affect the efficiency of dietary AMEn and TMEn for net energy, diet energy and protein efficiency ratio (EER,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AMEn; TMEn; NE; EER; PER.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100047

The Expression of Can and Camk is Associated with Lipogenesis in the Muscle of Chicken
Provedor de dados: 89
Autores: Yang,Y; Song,J; Fu,R; Sun,Y; Wen,J.
ABSTRACTIntramuscular fat (IMF) content in chickens significantly contributes to meat quality. The main objective of this study was to assess the expression of calcineurin (CaN) and Ca2+/calmodulin-dependent protein kinase (CaMK) in lipogenesis in chicken muscle. Chickens were slaughtered and sampled at 4, 8, and 16 weeks of age. IMF content and the expression of CaN subunits and CaMK isoforms were measured in the thigh muscle tissue. The results showed that the IMF contents were greater at 16 weeks compared with those at 4 and 8 weeks (p&lt;0.05). Transcription of fatty acid synthase (FAS) and fatty acid translocase CD36 (FAT/CD36) mRNA significantly increased with age, from four to 16 weeks (p&lt;0.05). The mRNA levels of CaNB and CaMK IV were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ca2+/calmodulin-dependent protein kinase; Calcineurin; Chicken; Regulation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300287

The Expression of NF-kB Signaling Pathway Was Inhibited by Silencing TGF-b4 in Chicken IECs Infected with E. tenella
Provedor de dados: 89
Autores: Jin,H; Haicheng,Y; Caiyun,Z; Yong,Z; Jinrong,W.
ABSTRACT Chicken coccidiosis is a parasitic disease caused by one or more species of Eimeria infection with severe consequences. The NF-κB signaling pathway and TGF-β4 play an important role in the inflammation and immune response caused by coccidiosis infection. This study was designed to investigate the changes of NF-κB signaling pathway and the effects of TGF-β4 silencing on the expression of NF-κB signaling pathway in chicken’s intestinal epithelial cells (IECs) after infecting with E. tenella sporozoites. TGF-β4 small interfering RNA (TGF-β4 siRNA) sequences were transfected into chicken IECs for reducing TGF-β4 expression. The results showed that compared with uninfected control group (Con.), the proinflammatory factors of NF-κB, IL-6, IL-2, IL-1β...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: NF-κB signaling pathway; TGF-β4; IECs; Coccidiosis; Chicken.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400314

The Gene Ontology Differs in Bursa of Fabricius Between Two Breeds of Ducks Post Hatching by Enriching the Differentially Expressed Genes
Provedor de dados: 89
Autores: Liu,H; Liu,J; Zhang,T; Li,L; Wang,J; Han,C; He,H.
ABSTRACT The bursa of Fabricius (BF) is the central humoral immune organ unique to birds. The present study investigated the possible difference on a molecular level between two duck breeds. The digital gene expression profiling (DGE) technology was used to enrich the differentially expressed genes (DEGs) in BF between the Jianchang and Nonghua-P strains of ducks. DGE data identified 195 DEGs in the bursa. Gene Ontology (GO) analysis suggested that DEGs were mainly enriched in the metabolic pathways and ribosome components. Pathways analysis identified the spliceosome, RNA transport, RNA degradation process, Jak-STAT signaling pathway, TNF signaling pathway and B cell receptor signaling pathway. The results indicated that the main difference in the BF...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bursa of Fabricius; Gene ontology; Duck; Digital gene expression profiling.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100169

The Identification of SNPs in BCDO2 Gene for Skin Color in Chinese Indigenous Chicken
Provedor de dados: 89
Autores: Kong,FL; Chen,SY; Ran,JS; Yang,CW; Jiang,XS; Lan,D; Hu,YD; Liu,YP.
ABSTRACT A complete linkage disequilibrium between the SNP (SNP B) in BCDO2 gene and the yellow skin phenotype in European domestic chicken has been reported. Here, we genotyped the reported SNPs (SNP A, SNP B, and SNP C) of the BCDO2 gene in 183 Chinese Indigenous chickens from 11 breeds/populations, including 57 yellow, 17 white, and 109 black skin chickens. The frequency of all three SNPs were significantly different between yellow and white skin chickens (p&lt;0.01). In black skin chickens, a high frequency of the heterozygous genotype (AG) in SNP A (0.51) and SNP B (0.48) was observed. A total of three haplotypes (AAA, AGA, and GAA) from these three SNPs were obtained. Frequencies of the proposed yellow skin-associated haplotype AGA in yellow skin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: B-carotene dioxygenase (BCDO2); Chinese indigenous chickens; SNPs; Skin color.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300393

The impact of organic and inorganic selenium on the immune system of growing broilers submitted to immune stimulation and heat stress
Provedor de dados: 89
Autores: da Silva,ICM; Ribeiro,AML; Canal,CW; Trevizan,L; Macagnan,M; Gonçalves,TA; Hlavac,NRC; de Almeida,LL; Pereira,RA.
One to 42-d-old (432) female broilers were fed different levels of inorganic selenium (ISe) and organic selenium (OSe), according to the following treatments: (1) 0.3 mg ISe; (2) 0.3 mg ISe + 0.2 mg OSe; (3) 0.5 mg ISe and (4) 0.3 mg OSe/ kg of feed. All birds were vaccinated against infectious bursal disease (IBD) at 19d of age and three birds/replicate (R) were inoculated with sheep red blood cells (SRBC) at 32d. Three other birds/R received Freund's adjuvant at 37d and avian tuberculin (AT) in the wattle at 47d of age. All birds were submitted to heat stress after 21d. Performance parameters, bursa and spleen weights, lymphocyte bursa depletion, antibody (Ab) production against IBD and SRBC, hematocrit, leukocytes, heterophil/lymphocyte ratio (H/L), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibody; Broiler; Infectious bursal disease; Performance; Selenium.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400005

The importance of endogenous nutrition of chicks from divergent strains for growing tested by deutectomy
Provedor de dados: 89
Autores: Gonzales,E; Leandro,NSM; Dalke,F; Brito,AB; Cruz,CP.
Effects of yolk sac removal (deutectomy) upon performance of chicks from three divergent strains were tested to evaluate the importance of endogenous nutrition on the post-hatch phase. Chicks from three different strains (Hy-Line W98, Cobb 500, and JA57) were submitted to a surgery procedure after hatching. Half of them had the residual yolk removed, and the other constituted a sham-deutectomized group. After operation, chicks were designated to a 3 x 2 factorial design (3 strains x 2 presence/absence of yolk sac), in a total of six experimental groups and ten replications of two to four birds. During 14 experimental days all birds were fed ad libitum a 21% CP and 3050 kcal/kg EM mash diet. Data were analyzed by ANOVA, and Tukey's test (p&lt;0.05)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body weight; Chick; Deutectomy; Strain; Yolk sac.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300006

The inclusion of coffee in commercial layer diets
Provedor de dados: 89
Autores: Mendes,LR; Silva,RB; Bueno,CFD; Couto,FAP; Dias,AN; Fernandes,V; Faria Filho,DE.
This experiment aimed at evaluating the effect of the dietary inclusion of caffeinated and decaffeinated coffee on the performance and internal and external egg quality of commercial layers. One hundred and twenty 25-week-old Hy-line Brown layers, with 1575 ± 91 average body weight, were distributed according to a completely randomized experimental design with three treatments (control, 1.2% caffeinated coffee, or 1.2% decaffeinated coffee) of five replicates of eight birds each. The inclusion of 1.2% caffeinated coffee was calculated to supply 6mg caffeine per kg body weight, which is considered a moderate dose. The applied treatments did not influence (p&amp;gt;0.05) feed intake, egg production, egg weight, egg mass, feed conversion ratio, Haugh units,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Layers; Caffeinated coffee; Decaffeinated coffee; Caffeine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200010

The influence of crude protein level in the basal diet on the determination of lysine requirements for broiler performance and part yields
Provedor de dados: 89
Autores: Viola,TH; Kessler,A de M; Ribeiro,AML; Silva,ICM da; Krás,R.
Amino acid requirements can be studied maintaining or not the ratio of the amino acids to lysine and changing or not dietary crude protein level. A third alternative was studied in this study conducted to evaluate broiler performance and weight gain of carcass parts, in response to increasing dietary digestible lysine (dig Lys) levels (0.70, 0.80, 0.90, 1.00, 1.055, 1.11, 1.165, and 1.22%). Two basal diets were formulated to contain 19.0% (diet A) and 20.5% (diet B) crude protein, and Met, Arg and Thr levels were formulated to maintain their ideal ratio to Lys. Three hundred and twenty CobbXCobb500 broilers, from 19 to 40 days of age, were used. Basal diet A was set for the 4 lowest levels of dig Lys, and diet B for the other four levels. Body weight (BW),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid balance; Basal diets; Broiler; Lysine; Protein.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300003

The Influence of Probiotic Bacteria (Bacillus Toyoi) on Livability and Performance of Young Meat-Type Turkeys
Provedor de dados: 89
Autores: Batkowska,J; Brodacki,A; Tomczyk,G.
ABSTRACT The aim of study was to determine the impact of a probiotic preparation containing live bacteria Bacillus cereus var. toyoi on the performance of turkeys in order to define the effective dose of the preparation and to evaluate its influence on poults' livability in the first month of life. Three hundred and sixty B.U.T. 9 male turkey were divided into three groups. The control group (I) was fed a diet with no probiotic additive, and groups II and III were given a probiotic product containing 0.2x109 and 1x109 B. toyoi CFU/kg of feed respectively. Body weight was recorded in weeks 1, 6, and 18. Livability, feed conversion ratio, and European Efficiency Factor (EEF) were estimated. In experiment II, the impact of a standardized probiotic dose on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus toyoi; Poults mortality; Probiotics; Turkeys.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400433

The influence of side-curtain color on broiler chick behavior
Provedor de dados: 89
Autores: Vercellino,R do A; Moura,DJ de; Nääs,I de A; Maia,AP de A; Medeiros,BBL; Salgado,DDA; Carvalho,TRM de.
Brazilian poultry production is prospering, and negative-pressure broiler houses are increasingly used to improve environmental control. One important issue is the color of the side curtains used in such houses due to the influence of colors on broiler behavior. This study aimed at evaluating the influence of different curtain color on the welfare of 7-day-old broilers, considering luminosity and other environmental parameters. Chicks were housed in three different negative-pressure broiler houses either with black (T1), blue (T2), or yellow (T3) side curtains. House environment (luminosity, dry-bulb temperature, air relative humidity, air velocity, and gas emissions) and the behavior of chicks on day 7 after housing were evaluated in three consecutive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Carbon dioxide; Luminosity; Behavior; Broiler chicks.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300002

The Investigation of the Relationship Between HSP-27 Release and Oxidative DNA Damage in Broiler Chickens with Tibial Dyschondroplasia by Using Histopathological and Immunohistochemical Methods
Provedor de dados: 89
Autores: Kapakin,KAT; Kapakin,S; Imik,H; Gumus,R; Eser,G.
ABSTRACT Tibial dyschondroplasia (TD) is a skeletal disorder that occurs in the proximal metaphyses of tibiotarsus and sometimes tarsometatarsus, resulting in the development of avascularized and non-mineralized abnormal cartilage and causing significant economic loss. In this study, we aimed to show the histopathological changes and the relationship between the release of Heat-Shock Protein 27 (HSP-27) and oxidative DNA damage in broiler chickens with tibial dyschondroplasia, using histopathologic and immunohistochemical methods. Our study material consisted of totally 20 animals out of 42 days old 205 Ross 308 broiler chickens, 10 with TD lesions and 10 healthy control subjects. Tissue samples taken from animals performed necropsy was exposed to routine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HSP-27; Oxidative DNA damage; Tibial dyschondroplasia.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300328

The Preventive Effects of Different Doses of Glucomannan on Experimental Aflatoxicosis in Japanese Quails
Provedor de dados: 89
Autores: Yavuz,O; Özdemir,Ö; Ortatatli,M; Atalay,B; Hatipoglu,F; Terzi,F.
ABSTRACT This experimental study was performed to investigate whether there is a protective effect of different doses of Glucomannan using against aflatoxicosis in Japanese quail, and pathological changes and relative organ weights were compared. In the experiment, 60 one-day old male Japanese quails were used as divided into six different groups. Experimental groups were designated as Control(C), aflatoxin(A), glucomannan(GM), 2-fold dose of glucomannan(2GM), aflatoxin+glucomannan(A+GM) and aflatoxin+2-fold dose of glucomannan(A+2GM). While control group quails fed the standard ration as ad libitum, other groups were fed with the administrations additionally to standard diet respectively; 2mg/kg of aflatoxin to group A, 1g/kg of glucomannan to group GM,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aflatoxin; Glucomannan; Histopathology; Quail.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300409

The Review of Certain In Vivo Antioxidant Effects on Essential Oils of Origanum Minutiflorum O Schwarz-Ph Davis, Juniperus Excelsa Bieb.subsp. Excelsa and Histopathologic Changes
Provedor de dados: 89
Autores: Göze,I; Göze,ÖF; Yelkovan,I; Çetinus,ŞA; Saygin,H; Ercan,N.
ABSTRACT Essential oil of plants called Juniperus excelsa Bieb. (JE), Origanum minutiflorum O. Schwarz and P.H. Davis (OM) were used in this study. In order to determine experimental doses, LD50 values of essential oils were determined on mice. Taking into consideration the LD30 range, the experimental toxic doses were calculated for each rat (rat/kg). The toxic dosages thus determined were adapted to rats for active substances (rat/kg). Using commercially available pure virgin olive oil (VOO) as the solvent and diluting agent, OM oil (n=10), JE fruitoil (n=10), carvacrol (CRV) (n=10), VOO (n=10) and normal saline SF (n=8) were administered on the basis of 12 days into intraperitoneal (IP). Enzyme activities of Glucose-6-Phosphate dehydrogenase (G6PDH),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brain histopathology antioxidant enzymes Juniperus excelsa kidney; Liver Origanum minutiflorum.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200333

The role of poultry industry in indian economy
Provedor de dados: 89
Autores: Vetrivel,SC; Chandrakumarmangalam,S.
Poultry farming in India, in spite of several constraints, has progressed considerably during the last decade. The present study has been undertaken to examine various aspects related to the growth and development of poultry production in the country. Poultry production in India was confined to backyards till recently. Local breed of birds were reared for the supply of eggs and meat. The increasing demand for poultry products necessitates augmenting the supply by importing improved breeds of poultry. In 1961, the proportion of hybrid populations in the total population of poultry was about 2 percent. Within a couple of decades, these birds have dominated the market sidelining the indigenous birds. The technological advances have revolutionized the role and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs; Supply; Production; Technology; Growth; Population.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400001

The Role of ß-Mannanase (Hemicell) in Improving Poultry Productivity, Health and Environment
Provedor de dados: 89
Autores: Saeed,M; Ayaşan,T; Alagawany,M; El-Hack,MEA; Abdel-Latif,MA; Patra,AK.
ABSTRACT The poultry nutritionists constantly attempt to identify and alleviate the factors responsible for adverse effects on nutrient utilization and production performance in avian species, which are necessary for successful productivity of poultry. Enhanced feed utilization can reduce levels of some nutrients in the diet with concomitant mitigation in nutrient excretion into the environment, reduction of eutrophication and acidification potentials of excreta. Commercial enzymes have been used to improve feed efficiency and utilization in poultry. Among many anti-nutritional factors, the existence of ß-mannans in poultry feed ingredients including soybean and other leguminous seeds has been associated with negative effects on nutrient digestibility and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-nutrient factor; SS-mannanase; Enzyme; Feed utilization; Poultry.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300303

THE SINGLE NUCLEOTIDE POLYMORPHISMS OF MYOSTATIN GENE AND THEIR ASSOCIATIONS WITH GROWTH AND CARCASS TRAITS IN DAHENG BROILER
Provedor de dados: 89
Autores: Zhang,XX; Ran,JS; Lian,T; Li,ZQ; Yang,CW; Jiang,XS; Du,HR; Cui,ZF; Liu,YP.
ABSTRACT Myostatin (MSTN) is a negative regulator of skeletal muscle growth. In order to investigate whether there is a correlation between MSTN polymorphisms and chicken production performance, in this study, single nucleotide polymorphisms (SNPs) in MSTN gene were examined across 180 Daheng broilers by direct sequencing of PCR product, and the correlations between the genotype and body weight at the age of 1-10 weeks and carcass traits at the age of 73 day were analyzed. Five SNPs (rs313622770, rs313744840, rs316247861, rs314431084, rs317126751) of MSTN gene were identified across Daheng broiler samples, and four haplotypes were reconstructed based on the five SNPs. Results of association analysis showed that four (rs313622770, rs313744840, rs316247861...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Association analysis; Chicken; Production performance; MSTN; SNP.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300319

The Strategic Application of Electrolyte Balance to Minimize Heat Stress in Broilers
Provedor de dados: 89
Autores: Gamba,JP; Rodrigues,MM; Garcia Neto,M; Perri,SHV; Faria Júnior,MJ de A; Pinto,MF.
Several physiological and metabolic changes are triggered in broilers submitted to high environmental temperatures, resulting in performance losses. Feed formulation manipulation of the dietary electrolyte balance may be applied to reduce the negative impact of heat stress on broiler performance. This experiment was carried out to evaluate the effect of the manipulations of dietary electrolytes by combining changes in the electrolyte (Na++K+-Cl-) balance (EB) and in the [(K++Cl-)/Na+] ratio (ER) in broiler feeds. In total, 1575 male broilers between 21 and 46 days old were allotted to 15 treatments in a 5x3 factorial arrangement, consisting of five diets with different EB/ER combinations (150/3, 250/2, 250/3, 250/4, and 350/3). Birds were submitted to heat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute heat stress; Electrolytes; Performance; Requirements.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200237

The traceability of animal meals in layer diets as detected by stable carbon and nitrogen isotope analyses of eggs
Provedor de dados: 89
Autores: Denadai,JC; Ducatti,C; Sartori,JR; Pezzato,AC; Móri,C; Gottmann,R; Mituo,MAO; Bordinhon,AM.
The aim of this study was to trace the inclusion of animal meals in layer diets by analyzing eggs and their fractions (yolk and albumen) using the technique of carbon and nitrogen isotopes. Two-hundred and eighty-eight (288) 73-week-old Shaver White layers, never fed animal ingredients, were randomly distributed in six treatments with six replicates each. The treatments were: control - corn and soybean meal based diet and five other experimental diets including bovine meat and bone meal (MBM); poultry offal meal (POM); feather meal (FM); feather meal and poultry offal meal (OFM), and poultry offal meal, feather meal, and meat and bone meal (MBOFM). The isotopic results were submitted to multivariate analysis of variance. Ellipses were determined through an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albumen; Poultry; Yolk; 13C; 15N.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300010

The use of animal byproducts in broiler feeds: use of animal co-products in broilers diets
Provedor de dados: 89
Autores: Caires,CMI; Fernandes,EA; Fagundes,NS; Carvalho,AP; Maciel,MP; Oliveira,BR.
This study aimed at evaluating live performance and carcass yield of broilers fed vegetarian diets or containing different animal byproduct meals after 8 days of age. In the experiment, 1080 one-day-old male chicks were distributed in a completely randomized experimental design with 6 treatments with 6 replicates. Diets were based on corn and soybean meal, and included or not animal meals, maintaining constant levels of minerals (calcium, phosphorus, and sodium) and amino acids (methionine, cystine, lysine, and threonine), The following treatments were applied: T1. Control (corn and soybean diet); T2. Inclusion of 5% meat and bone meal (MBM); T3. Inclusion of 5% blood meal (BM); T4. Inclusion of 5% feather meal (FM); T5. Inclusion of 5% poultry offal meal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal co-product meals; Carcass yield; Meat and bone meal.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100006

The use of carbon and nitrogen stable isotopes for the detection of poultry offal meal in meat-type quail feeds
Provedor de dados: 89
Autores: Sernagiotto,ER; Ducatti,C; Sartori,JR; Stradiotti,AC; Maruno,MK; Araujo,PC; Carvalho,FB; Pezzato,AC.
The objective of the present study was to trace the inclusion of poultry offal meal (POM) in the diet of meat-type quails reared for a long period using the technique of stable isotopes. A number of 320 quails were randomly distributed into eight treatments: vegetable diet (T1), and a diet containing 8% POM were fed until the end of the experimental period (T2) or replaced by the vegetable diet on day 42 (T3), 56 (T4), 70 (T5), 84 (T6), 98 (T7), and 112 (T8). Breast muscle samples were collected from four birds randomly selected per treatment every 14 days. The obtained isotope results were submitted to multivariate analysis of variance (MANOVA) with the aid of the GLM procedure of statistical SAS program. Treatments were different from T1 when birds were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon-13; Quail production; Stable isotopes; Nitrogen-15; Traceability.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100011

The use of light-emitting diodes (LED) in commercial layer production
Provedor de dados: 89
Autores: Borille,R; Garcia,RG; Royer,AFB; Santana,MR; Colet,S; Naas,IA; Caldara,FR; Almeida Paz,ICL; Rosa,ES; Castilho,VAR.
Artificial lighting is one of the most powerful management tools available to commercial layer producers. Artificial light allows anticipating or delaying the beginning of lay, improving egg production, and optimizing feed efficiency. This study aimed at comparing the performance of commercial layers submitted to lighting using different LED colors or conventional incandescent lamps. The study was carried out in a layer house divided in isolated environments in order to prevent any influenced from the neighboring treatments. In total, 360 Isa Brown layers, with an initial age of 56 weeks, were used. The following light sources were used: blue LED, yellow LED, green LED, red LED, white LED, and 40W incandescent light. Birds in all treatment were submitted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial lighting; Commercial layers; Egg weight; Haugh units.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200009

The use of whole grain sorghum in broiler feeds
Provedor de dados: 89
Autores: Fernandes,EA; Pereira,WJS; Hackenhaar,L; Rodrigues,RM; Terra,R.
In broiler feed manufacturing, grinding may significantly increase costs due to electric energy use. This study evaluated the performance and the morphometrics of the gastrointestinal tract of broilers. According to a completely randomized experimental design, 2,400 birds (1,200 males and 1,200 females) were submitted to five treatments of eight replicates each. Treatments consisted of diets based corn or sorghum as follows: ground corn (A), broken corn (B), ground sorghum (C), ground (50%) and whole (50%) sorghum (D) and whole sorghum (100%; E). Pre-starter feeds (1 to 8 days), based on corn or sorghum, were produced only with ground grains. The study was divided in two trials: males and females. The results were submitted to analysis of variance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum grain; Performance; Chicks.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300008

Thermal comfort zones for starter meat-type quails
Provedor de dados: 89
Autores: Sousa,MS; Tinôco,I de FF; Amaral,AG; Inoue,KRA; Barreto,SL; Savastano Jr,H; Souza,CF; Paula,MO.
The objective of this study was to determine thermal comfort ranges, as evaluated by air temperature and black-glove temperature and humidity index (BGTHI), for starter meat-type quails. Nine hundred quails were randomly distributed into five environmental chambers. Each chamber was programmed to provide different temperatures weekly. The following thermal environments were provided: SC - severe cold, MC - moderate cold, TC - recommended comfort environment, MH - moderate heat, and SH - severe heat. The best live performance was obtained when quails were submitted to temperatures of 36-39 ºC and BGTHI of 87.1 ± 0.4 and 91.4 ± 0.6 during the first week of rearing. Temperatures of 27-30 ºC and BGTHI of 75.8 ± 0.4 and 79.9 ± 0.6, during the second week, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environment; Coturnix; Performance; Livability.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300006

Thermal Manipulation Mid-term Broiler Chicken Embryogenesis: Effect on Muscle Growth Factors and Muscle Marker Genes
Provedor de dados: 89
Autores: Al-Zghoul,MB; Al-Natour,MQ; Dalab,AS; Alturki,OI; Althnaian,T; Al-ramadan,SY; Hannon,KM; El-Bahr,SM.
ABSTRACT Thermal manipulation (TM) during broiler chicken embryogenesis has been shown to promote muscle development and growth. However, the molecular bases of promoting broiler muscle development and growth are not fully understood. The aim of this study was to investigate the molecular bases of muscle growth and development in broiler chickens subjected to TM. This included the investigating of the changes in mRNA expression levels of muscle marker genes, namely MyoD, myogenin, paired box transcription factor (Pax7) and proliferating cell nuclear antigen (PCNA), and muscle growth factors namely insulin-like growth factor 1 (IGF-1), myostatin and growth hormone (GH) during embryogenesis and on posthatch days 10 and 28. Fertile Cobb eggs (n=1500) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryogenesis; IGF-1; MyoD; Myostatin; Thermal manipulation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400607

Thermographic Images to Measure Health Risks of Workers Exposed to Artificially Refrigerated Environments
Provedor de dados: 89
Autores: Takeda,F; Moro,A; Martins,N.
ABSTRACT Thermography generates high-resolution imagery in real time and is a non-invasive and painless technique devoid of physical contact or exposure to any type of radiation. This technique has been successfully applied to different areas, such as health- and safety-related applications, to control cold risk in workers exposed to low-temperature environments. Thus, this study aims to analyze skin temperature variations in three body parts of the upper limbs (fingers, the center of the hands and wrists on both the left and right sides of the body) caused by exposure to low temperatures in air-conditioned and artificially controlled work environments. The objective is to assess thermography’s adequacy in controlling workers’ health risks. This study used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Slaughterhouse; Worker Health; Cold; Skin Temperature; Work Safety Engineering.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200245

Tibial dyschondroplasia and bone mineral density
Provedor de dados: 89
Autores: Almeida,Paz ICL; Mendes,AA; Takita,TS; Vulcano,LC; Guerra,PC; Wescheler,FS; Garcia,RG.
This study was carried out at Faculdade de Medicina Veterinária e Zootecnia, UNESP, Botucatu-SP, Brazil. The aim was to establish the normal values of bone mineral density (BMD) expressed in millimeters of aluminum in the tibia of broiler chickens using optical densitometry of radiographs. Four hundred Cobb male chicks were reared from 1 to 40 days of age, when 40 of them were selected and the right femur-tibia articulation was radiographed. Radiographs were taken with the X-ray equipment calibrated for 45 kvp and 3.2 mAs and a focus-to-film distance of 90 cm. An aluminum phantom ASTM-6063 consisting of 20 ladder steps with graduate density was placed parallel to the area to be radiographed and used as a densitometry reference standard. Radiograph images...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone; Bone mineral density; Optical radiographic densitometry; Tibial dyschondroplasia.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400003

Time required to protect the intestinal tract of chicks against Salmonella enterica serovar enteritidis using competitive exclusion
Provedor de dados: 89
Autores: Sterzo,EV; Paiva,JB; Penha Filho,RAC; Berchieri Junior,A.
Competitive exclusion (CE) has been designed to accelerate the colonization of the alimentary tract of young commercial birds and it has been also used to repopulate the digestive tract after antibiotic therapy. The method has been successfully adopted as a means to prevent enteric salmonellosis. The present study was carried out to evaluate if CE is able to prevent this kind of infection. Newly hatched chicks were given a CE culture and at different intervals of time birds infected with Salmonella Enteritidis were placed together with the group of treated birds. CE culture was prepared from feces of adult laying hens incubated overnight at 37C under aerobic conditions. Birds were killed 4 and 8 days after challenge and viable counts of Salmonella...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competitive exclusion; Effectiveness; Salmonella Enteritidis.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200009

Toxic Effects of Ochratoxin A on Calcium Metabolism during Chick Embryo Developmentand in Hatched Chicks
Provedor de dados: 89
Autores: Elsayed,MAE; Hatab,MH; Elaroussi,MA.
ABSTRACT The present study was carried out to study the effect of in-ovo ochratoxin A (OTA) injection in Highline layer eggs on calcium metabolism and blood biochemical parameters of embryos and after the hatch. At day 10 of embryonic development, one hundred and sixty-two fertile eggs were individually weighed and divided into two equal treatments. The first treatment (control) consisted of the individual injection of fertile eggs with 50 µL sodium carbonate. In the second treatment (OTA), fertile eggs were individually injected with 12.5 ng OTA dissolved in 50 µL sodium carbonate. On days 12, 14, and 16 of incubation and at the hatch, serum calcium and inorganic phosphorus concentrations were lower (p&lt;0.05), while sodium, alkaline phosphatase and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ochratoxicosis; Embryotoxicity; Blood electrolytes; Layer chickens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300371

Toxoplasma Gondii and Neospora Caninum Antibodies in Backyard Chickens in Rio Grande do Sul, Brazil
Provedor de dados: 89
Autores: Camillo,G; Cadore,GC; Ferreira,MST; Braünig,P; Maciel,JF; Pivoto,FL; Sangioni,LA; Vogel,FSF.
Toxoplasma gondii and Neospora caninum are two intracellular apicomplexan protozoa with worldwide distribution, and are responsible for reproductive disorders in sheep and cattle. These protozoa may infect a wide variety of domestic and wild animals, including birds, and backyard chickens can be used as sentinels of their infection. Parasites investigation in backyard chickens may be useful for the evaluation of environmental contamination with oocysts, of the disease cycle, and of risk factors associated with public health. The aim of this study was establish the importance of backyard chickens as T. gondii and N. caninum hosts. A number of 137 serum samples were collected from chickens in 23 farms in Rio Grande do Sul State, Brazil, and tested for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Backyard chickens; Neosporosis; Public health; Toxoplasmosis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200263

Trace Mineral Sources and Rosemary Oil in the Diet of Brown Laying Hens: Egg Quality and Lipid Stability
Provedor de dados: 89
Autores: Batista,NR; Garcia,ERM; Oliveira,CAL; Arguelo,NN; Souza,KMR.
ABSTRACT Two experiments were carried out to evaluate the effects of rosemary oil (RO) and trace mineral sources (MS) on the internal quality and lipid stability of brown layer eggs. The treatments consisted of diets supplemented with two trace mineral sources (inorganic or organic) and three levels (0, 100, or 200 mg kg-1) of rosemary oil (RO), and three egg storage times. Eggs were stored at a controlled temperature (CT; 25.0ºC) in Experiment I and under refrigeration (RT; 5.0ºC) in Experiment II. The following parameters were analyzed on days 0 (fresh), 15 and 30 of storage: malonaldehyde level (MDA), egg weight (EW), Haugh unit (HU), yolk index (YI), albumen and yolk pH, raw yolk color (RYC), and egg weight loss. Data were analyzed according to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chelated trace minerals; Lipid oxidation; Malonaldehyde; Rosmarinus officinalis; Storage.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400663

Traceability of animal by product meals in broilers fed sugarcane yeast using stable isotopes
Provedor de dados: 89
Autores: Kanayama,JS; Pezzato,AC; Sartori,JR; Ducatti,C; Novaes,VHC; Fascina,VB; Araújo,PC; Carvalho,FB.
The objective of this study was to verify if the dietary inclusion of sugarcane yeast at levels commonly used in broiler diets influences the traceability of cattle meat meal and poultry offal meal, using the technique of stable carbon and nitrogen isotopes in the breast muscle of chickens. A number of 325 one-d-old male broilers were randomly distributed into 13 treatments with 25 birds each. Treatments consisted of a control diet based on corn and soybean meal, and the inclusion of 1, 2, 4, or 6% meat and bone meal, poultry offal meal or sugarcane yeast. At 42 days of age, six birds per treatment were randomly selected, sacrificed, and their breast muscle was collected for isotopic ration analysis. The isotopic ratio of birds fed the diet with inclusion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal by product meals; Broilers; Isotopes; Sugarcane yeast; Traceability.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100009

Traceability of animal byproducts in quail (Coturnix coturnix japonica) tissues using carbon (13C/12C) and nitrogen (15N/14N) stable isotopes
Provedor de dados: 89
Autores: Móri,C; Garcia,EA; Ducatti,C; Denadai,JC; Pelícia,K; Gottmann,R; Mituo,AOM; Bordinhon,AM.
Consistent information on meat products consumed by the public is essential. The technique of stable isotopes is a powerful tool to recover consumers' confidence, as it allows the detection of animal byproduct residues in poultry meat, particularly in quail meat. This study aimed at checking the presence of poultry byproduct mixtures in quail diets by applying the technique of carbon (13C/12C) and nitrogen (15N/14N) stable isotopes in quail breast muscle, keel, and tibia. Sixty four one-day-old male quails were obtained from a commercial farm. Birds were housed in an experimental house from one to 42 days of age, and were randomly distributed into 8 experimental treatments, and fed diets containing poultry offal meal (POM), bovine meat and bone meal (MBM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal byproducts; Certification; Meat quails; Stable isotopes.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400010

Traceability of animal meals in Japanese quail eggs using the technique of 13C e 15N* stable isotopes
Provedor de dados: 89
Autores: Mori,C; Ducatti,C; Pizzolante,CC; Kakimoto,SK; Denadai,JC.
The objective of this study was to trace the inclusion of bovine meat and bone meal (BMBM) in the diet of Japanese quails by analyzing eggs and egg fractions (yolk and albumen) by the technique of carbon-13 (13C) and nitrogen-15 (15N) stable isotopes. In the trial, 120 Japanese quails were distributed in six treatments with four replicates of five birds each. The following treatments were applied: feed based on corn and soybean meal, containing graded BMBM inclusions (0, 1, 2, 3, 4 or 5%). After 42 days, 20 eggs per treatment were randomly collected for three consecutive days. Ten eggs were used for yolk and albumen sample collection, and ten for total egg sample collection. It was possible to detect the dietary inclusion of 1% BMBM in the egg and its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon-13; Coturnix coturnix japonica; Bovine meat and bone meal; Certification; Nitrogen-15.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100010

Traceability of bovine meat and bone meal in poultry by stable isotope analysis
Provedor de dados: 89
Autores: Carrijo,AS; Pezzato,AC; Ducatti,C; Sartori,JR; Trinca,L; Silva,ET.
Bovine meat and bone meal (MBM) was widely used in animal diets until outbreaks of Bovine Spongiform Encefalopathy (BSE) occurred in some countries. It has not been confirmed yet whether or not BSE may be transmitted to man through chicken meat originated from poultry that had been fed diets containing MBM. Therefore, consumers nowadays express preference for meat originated from birds fed exclusively vegetable diets. This study analyzed samples of major breast muscle (Pectoralis major) using mass spectrometry of stable isotopes (carbon and nitrogen) as a means to assess the presence of MBM in broiler diets, a technique that might be used in the certification of poultry quality. A total of 150 day-old chicks were reared in five randomized treatments with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Authentication; Carbon-13; Isotopic determination; Nitrogen-15; Tracer.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100010

Traceability of poultry offal meal in broiler feeding using isotopic analysis (δ13C and δ15N) of different tissues
Provedor de dados: 89
Autores: Oliveira,RP; Ducatti,C; Pezzato,AC; Denadai,JC; Cruz,VC; Sartori,JR; Carrijo,AS; Caldara,FR.
Our goal was to trace the inclusion of poultry offal meal (OM) in diets by using carbon (13C/12C) and nitrogen (15N/14N) isotopic ratios of different tissues in order to contribute for the development of an independent technology for the certification of the feeding of broilers reared on diets with no addition of animal ingredients. Eighty one-day-old chicks were randomly distributed into five experimental treatments, that is, diets containing increasing levels of OM inclusion (0, 2, 4, 8 and 16% OM), with four replicates of four birds each. At 42 days of age, four birds per treatment (n=4) were randomly selected, weighed, and sacrificed to collect breast muscle (Pectoralis major), keel and tibia samples to determine their isotopic ratios (13C/12C e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carbon-13; Certification; Feeding regime; Nitrogen-15.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100002

Training of catching teams and reduction of back scratches in broilers
Provedor de dados: 89
Autores: Pilecco,M; Almeida Paz,ICL; Tabaldi,LA; Nääs,IA; Garcia,RG; Caldara,FR; Francisco,NS.
This study evaluated the efficacy of training of catching teams and reduction of back scratches in broilers. The study was carried out in a large broiler company between January and October of 2010, in the region of Dourados, Brazil. During that period, 80 samplings were performed in 80 broiler houses in the micro-regions covered by the company. When broilers were 43 days old, when 5% of the birds in each house were evaluated immediately after catching, when birds were already inside the plastic crates, ready to be transported to the processing plant. Out of a total number of 1,177,600 total, 58,880 broilers were evaluated. Four catching teams (A, B, C, and D), with 24 people each, were trained for four consecutive weeks. By the end of the training course,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Processing; Catching; Broiler production; Carcass downgrading.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300017

Transcriptome Analysis of Chicken Embryo Fibroblast Cell Infected with Marek’s Disease Virus of GX0101 ∆ LTR
Provedor de dados: 89
Autores: Li,X; Su,S; Cui,N; Zhou,H; Liu,X; Cui,Z.
ABSTRACT Marek’s disease (MD), a lymphoproliferative disorder of chickens caused by the MD virus (MDV), is economically significant. The resistance/susceptibility to MD is controlled by host genetics. The host response to different virus strains varies. The pathogenicity of REV-LTR deleted GX0101∆LTR MDV has been previously reported. However, the precise molecular mechanism of the response of chickens to GX0101ΔLTR remains unclear. The current study aimed at identifying the genes and pathways involved in the response to GX0101ΔLTR virus infection in specific pathogen-free chicken embryo fibroblast cells using global transcriptome analysis. A total of 1,633 genes associated with GX0101ΔLTR infection were identified. Functional analysis showed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gene profiling; Chicken; CEF cell; GX0101ΔLTR MDV.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200179

Turkey Wattle Temperature Response to Distinct Environmental Factors
Provedor de dados: 89
Autores: Mendes,AS; Moura,DJ; Morello,GM; Carvalho,TMR; Sikorski,RR.
ABSTRACT Rearing environmental conditions are important for turkey production, because this bird is particularly sensitive to heat stress. This study aimed at measuring the wattle temperature response of turkeys of three different ages (61, 96, and 131 days old) exposed to different combinations of dry bulb temperature, relative humidity, and wind speed ranges, as an indication of their physiological responses. The experiment was conducted with 42 male birds housed in a controlled environment chamber and exposed to different combinations of two air speed (WS) ranges (WS1 = 0.3-0.6 ms-1, considered low, and WS2 = 1.2-1.6 ms-1, considered high), dry bulb temperature (DBT) between 22 and 34 °C, and relative humidity (RH) between 40 to 90 %. The statistical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wind speed; Thermal comfort; Relative humidity; Environmental exposure.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400439

Turmeric root and annato seed in second-cycle layer diets: performance and egg quality
Provedor de dados: 89
Autores: Laganá,C; Pizzolante,CC; Saldanha,ESPB; Moraes,JE de.
The objective of this study was to evaluate the effects of the inclusion of annato (Bixa orellana L.) and turmeric (Turmeric longa L.) in layer feeds on live performance, egg quality, and yolk pigmentation and depigmentation time. A number of 144 layers were distributed in a completely randomized experimental design, with four treatments with six replicates of six birds each. In the basal diet, sorghum replaced 50% of corn, and was supplemented or not with natural pigments to composse the following treatments: Control (0% pigments), AS (2.0% annato), TR (2% turmeric) and ASTR (1% annato and 1% turmeric). Egg weight (g), egg production (%), egg mass (%), feed intake (g), feed conversion ratio (kg/dz and kg/kg) and mortality were evaluated. The following egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annato; Layers; Second cycle; Sorghum; Turmeric.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300002

Ultrastructural Assessment of the Integrity of the enteric Mucosa of Commercial Turkeys Vaccinated against Coccidiosis
Provedor de dados: 89
Autores: MRFB,Martins; Mendes,AA; Milbradt,EL; Almeida Paz,ICL; Martins,BB; Fernandes,BCS.
ABSTRACT The objective of this study was evaluated the villus integrity of commercial turkeys submitted to coccidiosis prevention methods and challenged with Eimeria field oocysts, using scanning electron microscopy. Sixty BUT 9 female commercial turkeys were distributed in a completely randomized block design split with two treatments: T1- control diet without vaccinations against coccidiosis and anticoccidial drug, and T2- vaccinated against coccidiosis (commercial vaccine). On d 21 of life, all birds of all treatments were challenged with a mixed-species containing E. meleagrimitis and E. galopavonis, via crop intubation with 1 mL of ~20,000 sporulated oocysts/bird. The size of the inoculum was determined in previous experiments. At 27 and 70 days of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird; Diseases; Poultry production; Protozoan parasites.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500057

Upregulation of TLR4 mRNA Expression Levels in Broiler Chickens Under Acute Heat Stress
Provedor de dados: 89
Autores: Huang,S.
ABSTRACT Toll-like receptors (TLRs) are well-characterized in mice and rats, but little is known on their role in broiler chickens during acute heat stress (AHS). The aim of the present study was to estimate the change in TLR4 mRNA expression in the liver, kidney's pleen, heart, and small intestine of broiler chickens under AHS. A total of 240 healthy Arbor Acres (AA) broiler chickens were randomly divided into four groups: control group (22±1°C; 0h), HS2, HS5 and HS10 (38±1°C; 2h, 5h and 10h of heat stress, respectively). As AHS duration increased, TLR4 mRNA expression slightly decreased at HS2 and HS5, but was dramatically elevated in HS10 (p&lt;0.001) compared with the control group in the small intestine, as well as in the spleen at HS2 (p=0.001) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toll-like receptors 4; Liver; Small intestine; Acute heat stress; Broiler chickens.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100087

Use of Betaine in Post-Hatch Feed for Broiler Chicks
Provedor de dados: 89
Autores: Carvalho,FB; Stringhini,JH; Café,MB; Jardim Filho,RM; Chagas,GM; Oliveira,NF.
ABSTRACT Post-hatch delayed placement damages the physical and physiological development of broiler chicks. This study was designed to find adequate levels of betaine inclusion in pre-hatching and pre-starter feed, in order to minimize the negative effects of post-hatch delayed placement on broiler chicks. Newly-hatched chicks were allotted in a completely randomized design, with five treatments, five replicates of ten birds each. Five dietetic levels of betaine (control, 0.070, 0.130, 0.200 and 0.260%) were used in the pre-starter ration, offered to the chicks in the transporting box and during the pre-starter phase. Performance, yolk sac retraction, plasma glucose concentration, weight and histomorphometry of the small intestine were evaluated, after 24...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Delayed placement; Glucose; Histomorphometry; Poultry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400316

Use of Glutamine in Post-Hatch Feed for Broiler Chicks
Provedor de dados: 89
Autores: Carvalho,FB; Stringhini,JH; Leandro,NSM; Café,M; Sousa,RF; Santos,BM.
ABSTRACT Post-hatch delayed placement damages, physical and physiological development of broiler chicks. The objective of this study was to ascertain adequate levels of glutamine inclusion in post-hatch and pre-starter feed, in order to minimize the negative effects of post-hatch delayed placement on broiler chicks. The birds were distributed in a completely randomized design, with four treatments and five replicates of ten birds each. Four levels of glutamine supplementation (0, 1, 2 and 3%) were used in the pre-starter feed, which was given to the chicks in the transportation box and during the pre-starter phase. After 24 hours of access to this feed, and at 7 days of age, the chicks’ performance, yolk sac retraction, plasma glucose concentration, weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Poultry; Delayed placement; Glucose; Histomorphometry.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100300

Use of lytic bacteriophages to reduce Salmonella Enteritidis in experimentally contaminated chicken cuts
Provedor de dados: 89
Autores: Fiorentin,L; Vieira,ND; Barioni Júnior,W.
Reducing Salmonella contamination in poultry is of major importance to prevent the introduction of this microorganism into the food chain. Salmonellae may spread during storage time (shelf life) whenever pre-harvest control fails or post-harvest contamination occurs. Therefore, preventive measures should also be used in the post-harvest level of poultry production in order to control salmonellae. Chicken skin samples were experimentally contaminated by immersing whole legs (thighs and drumsticks) in a suspension containing 10(6) colony forming units per milliliter (CFU/mL) of Salmonella Enteritidis phage type 4 (SE PT4) at the slaughter day. One day later, samples from one group were immersed in a suspension pool containing 10(9) CFU/mL of each of three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteriophages; Contamination; Salmonella; Poultry; Skin.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400010

Use of mannanoligosaccharides in broiler feeding
Provedor de dados: 89
Autores: Flemming,JS; Freitas,JRS; Fontoura,P; Montanhini Neto,R; Arruda,JS.
A study with 2,400 broilers was carried out to compare the effect of the use of mannanoligosaccharides, Saccharomyces cerevisiae cell wall or growth promoter (Olaquindox) in the diet on broiler. Diets were based on corn and soybean meal. A completely randomized experimental design was used, and the obtained data were evaluated by analysis of variance and test of Tukey at a level of 5%. The following parameters were measured: feed intake, daily weight gain, feed conversion ratio, and mortality. It was concluded that the effect of the inclusion of mannanoligosaccharides in the diet on the studied parameters was significantly higher as compared to the inclusion of cell wall or to the control diet, but the effect was not different as compared to the inclusion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler diets; Alternative growth promoters; Additives in broiler diets.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300005

Use of nicarbazin, salinomycin and zinc oxide as alternative molting methods for commercial laying hens
Provedor de dados: 89
Autores: Domingues,C H de F; Sgavioli,S; Praes,M F F M; Castiblanco,D M C; Marchizeli,P C A; Pereira,A A; Duarte,K F; Junqueira,O M.
An experiment was carried out to evaluate the performance, egg quality and morphometry of the reproductive tract, liver, pancreas and tongue of laying hens submitted to different molting methods. Two hundred and eighty eight 72-week-old Isa brown layers were distributed according to a completely randomized design with six treatments (molting methods) and six replicates of eight birds each. Layers were fed diets containing 3000 ppm zinc oxide, 60 ppm or 120 ppm nicarbazin, 30 ppm or 60 ppm salinomycin, or were submitted to feed fasting. Data were submitted to analysis of variance and means were compared by the test of Tukey at 5% probability level. Molting methods alternative to feed fasting were effective to induce molting in layer and provided good...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food restriction; Performance; Egg quality; Morphometry.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200003

Use of Organic Acids and A Competitive Exclusion Product as Growth Promoter and Salmonella Enteritidis Control in Commercial Turkeys
Provedor de dados: 89
Autores: Milbradt,EL; Okamoto,AS; Padovani,CR; Fascina,VB; Silva,TM; Altarúgio,R; Hataka,A; Schmidt,EMS; Andreatti Filho,RL.
ABSTRACT It is estimated that Salmonella causes one million illnesses in the United States annually, with 19,000 hospitalizations and 380 deaths. There are various serotypes of this bacterium, and the serotypes Typhimurium and Enteritidis are commonly isolated from outbreaks and, in most cases, present resistance to the antibiotics utilized in clinical medicine. One of the current theories to explain the emergence of bacterial resistance is the continuous use of antibiotics as growth promoters in animal feeds. Despite the lack of evidences that antibiotic growth promoters cause bacterial resistance, the poultry industry has explored strategies to reduce or to eliminate the use of antibiotic growth promoters in the production chain, including the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commercial turkey; Competitive exclusion; Organic acid; Salmonella Enteritidis.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400551

Use of prebiotics and probiotics of bacterial and yeast origin for free-range broiler chickens
Provedor de dados: 89
Autores: Pelícia,K; Mendes,AA; Saldanha,ESPB; Pizzolante,CC; Takahashi,SE; Moreira,J; Garcia,RG; Quinteiro,RR; Paz,ICLA; Komiyama,CM.
This study aimed to evaluate the effects of probiotics and prebiotics of bacterial and yeast origin on the performance, development of the digestive system, carcass yield and meat quality of free-range broiler chickens. Five hundred and sixty male chicks of the strain ISA S757-N were reared from one to 84 days old. The birds were distributed in four treatments according to a completely randomized block design: T1 = Control, T2 = Probiotics and Prebiotics of bacterial origin, T3 = Probiotics and prebiotics of yeast origin, T4 = Probiotics and prebiotics of bacterial origin + probiotics and prebiotics of yeast origin. There were four repetitions with 35 birds per repetition, and the birds had access to a pasture area after 35 days of age. Characteristics...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Free-range broiler chickens; Digestive system; Probiotics; Symbiotics; Yeast.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300006

Use of radiograph optical densitometry to monitor bone quality in broiler breeders
Provedor de dados: 89
Autores: Almeida Paz,ICL; Mendes,AA; Quinterio,RR; Vulcano,LC; Ballarin,AW; Takahashi,SE; Garcia,RG; Komiyama,CM; Balog,A; Pelícia,K; Wescheler,FS; Scudeller,PSO.
This study was carried out at Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, SP, Brazil, and evaluated bone quality in broiler breeders. Twenty-three families of Ross broiler breeders were housed in 5.0-m² pens. The families were comprised of 13 females and one male at the onset of the experimental period. The mean number of females per family was 9.34 at the end of the trial. The feeding program and management followed strain guidelines (Agroceres Ross, 2003). Bone analyses were performed in the right tibia and femur using optical radiographic densitometry at 4, 8, 12, 15, 20, 24, 30, 35, 42, 47 and 52 weeks of rearing. Trap nests were used to collect eggs from the breeders two weeks before and after the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone density; Broiler breeders; Eggshell quality; Optical densitometry; Seedor index.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100005

Use of Soy Protein Concentrate in Pre-Starter and Starter Diets for Broilers
Provedor de dados: 89
Autores: Vasconcelos,LG; Mello,HHC; Stringhini,JH; Andrade,MA; Cysneiros,CSS; Arnhold,E; Mascarenhas,AG; Resende,MQ; Xavier,HPF.
ABSTRACT Two experiments were carried out to evaluate the effect of using soy protein concentrate (SPC) in pre-starter and starter diets for broilers. In the first experiment, 600 male Cobb broilers, between one and 40 days of age, were distributed in a completely randomized design, with four treatments and six replications of 25 birds each. Treatments were ofered to broilers in the pre-starter and starter diets and consisted of inclusion of soy protein concentrate (0,3,6 and 9%) in diets. The parameters evaluated were: body weight gain, feed conversion ratio, consumption of ration, enzyme production in the pancreas, villus: crypt ratio, leukocyte count and immunoglobulin A (IgA) dosage. Aimed to determine the coefficient of nutrient metabolization of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative Feed; Immune Response; Metabolizability; Performance; Poultry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500001

Use of vitamin D to reduce lameness in broilers reared in harsh environments
Provedor de dados: 89
Autores: Nääs,I de A; Baracho,M dos S; Bueno,LGF; Moura,DJ de; Vercelino,R do A; Salgado,DD.
In tropical poultry-producing countries, poultry houses usually have little environmental control. This study investigated the effect of dietary vitamin D on the incidence of leg abnormalities of a fast-growing broiler strain reared under harsh conditions. In this study, 300 one-day-old male broilers were distributed in two treatments with three replicates of 50 birds each. One group was fed a placebo and the other group was fed 25-hydroxycholecalciferol (25-OH-D3) in a soluble form. The environmental variables were weekly recorded during until birds were 49 days old. Birds were weekly gait scored, and their walking speed and vertical force while walking were assessed. Post-mortem examination was performed and skeletal lesions were assessed. Control birds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feet force measurement; Leg abnormalities; Vitamin D supplement.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300002

Using nonparametric analysis (DEA) for measuring technical efficiency in poultry farms
Provedor de dados: 89
Autores: Heidari,MD; Omid,M; Akram,A.
The objective of this study was to determine the economic efficiency of resource utilization in broiler production farms using a non-parametric production function, data envelopment analysis (DEA). Data for the analysis were collected from a cross section of 44 farmers using a multi-stage sampling procedure. In DEA models the farmers that produce their level of output with the least amount of input serve as benchmarks against which the input use inefficiency of all other farmers can be measured. The total variable costs, net return and benefit cost ratio were calculated to be 3506.29 $ (1000 bird)-1, 1386.53 $ (1000 bird) -1 and 1.38, respectively. The average values of technical and scale efficiencies of farmers were found to be 0.92 and 0.93. The results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Data envelopment analysis; Economic; Feed cost; Poultry farms; Technical efficiency.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400009

Using processed feeds for laying quails (Coturnix coturnix japonica)
Provedor de dados: 89
Autores: Murakami,AE; Souza,LMG; Sakamoto,MI; Fernandes,JIM.
The aim of this experiment was to determine the productive performance and egg quality of Japanese quails fed different types of processed rations (mash, extruded, or pelleted). One hundred and forty-four 18-w-old quails (Coturnix coturnix japonica) were housed in galvanized wire cages and fed a 21.50% CP and 2850 kcal ME/kg basal feed supplied in mash, extruded, or pelleted form. Experimental data were analyzed by ANOVA as a complete randomized design, with three treatments (ration forms) and six replicates of eight quails each. When necessary, means were compared by Tukey's test at 5% significance. Quails fed pelleted feed presented higher egg production, feed intake, and egg mass weight as compared to mash- and extruded-diet-fed birds. Under the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Processing; Production performance.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400002

Uso de Fosfato Bicálcico Granulado Sobre o Desempenho e Mineralização Óssea de Frangos de Corte
Provedor de dados: 89
Autores: Junqueira,OM; Lemos,MG; Araújo,LF; Mucke,D; Araújo,CSS; Andreotti,MO; Cancherini,LC; Barbosa,MJB.
O objetivo do experimento foi avaliar os efeitos do tamanho da partícula do fosfato bicálcico (fina ou granulada) e dos níveis de fósforo total sobre o desempenho de frangos de corte e sobre os teores de cálcio, fósforo e magnésio dos ossos. O delineamento experimental utilizado foi o inteiramente casualizado em esquema fatorial 3x2 com 3 níveis de fósforo total (0,5%; 0,6% e 0,7%) e duas granulometrias de fosfato bicálcico (fina e granulada). Foram utilizados 300 pintos de corte com um dia de idade, machos, da linhagem Cobb, alojados em baterias metálicas em 6 tratamentos com 5 repetições de 10 aves, totalizando 30 gaiolas dispostas em 6 baterias de 5 andares cada. Os resultados demonstraram que o uso do fosfato granulado resultou em melhor desempenho dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Fosfato bicálcico; Frangos de corte; Granulometria; Minerais; Ossos.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100006

Uso de Redes Neurais Artificiais para Estimar Parâmetros de Produção de Galinhas Reprodutoras Pesadas em Recria
Provedor de dados: 89
Autores: Salle,CTP; Guahyba,AS; Wald,VB; Silva,AB; Salle,FO; Fallavena,LCB.
Uma atividade com a magnitude da avicultura, que usa equipamentos de última geração e serviços atualizados, é levada, na maioria dos casos, a tomar decisões que envolvem todos aspectos de produção, apoiada em critérios subjetivos. O presente trabalho objetiva estudar a utilização das redes neurais artificiais para serem usadas na predição dos parâmetros de desempenho das aves em recria, pertencentes a uma integração avícola sul-brasileira. Foram utilizados os registros de 11 lotes de reprodutoras pesadas para a análise por redes neurais artificiais, no período compreendido entre 09/11/97 a 10/01/99. Os dados utilizados corresponderam a 273 linhas de registros semanais. Os modelos de redes neurais artificiais foram comparados e selecionados como melhores,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicultura; Gerenciamento; Recria; Reprodutoras pesadas; Redes neurais artificiais; Inteligência artificial.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300008

Utilização da Energia de Dietas para Frangos de Corte Formuladas com Óleo Ácido de Soja
Provedor de dados: 89
Autores: Vieira,SL; Ribeiro,AML; Kessler,AM; Fernandes,LM; Ebert,AR; Eichner,G.
O produto comercialmente chamado "óleo ácido de soja", resulta da acidificação da borra residual do processo de refino do óleo de soja. Este tem sido muito utilizado na indústria de rações animais, ainda que com vários questinamentos a cerca de sua eficiência, tais como a adulteração com outros ácidos graxos de baixo valor nutricional, nível de peroxidação, presença de impurezas, e valores energéticos não confiáveis. Neste estudo, foi avaliado o desempenho de frangos de corte consumindo dietas contendo óleo de soja ou óleo ácido de soja nos níveis de 4 e 8% ou a mistura das duas fontes em partes iguais de 2 e 4% cada. Essas dietas foram fornecidas para frangos de corte alojados em baterias climatizadas a partir dos 7 dias de idade. As aves que receberam...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácidos graxos livres; Energia; Frango de corte; Gordura; Óleo ácido de soja.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200005

Utilização de diferentes níveis de suplementação de sódio para poedeiras comerciais no segundo ciclo de produção
Provedor de dados: 89
Autores: Fassani,EJ; Bertechini,AG; Brito,JAG; Kato,RK; Geraldo,A.
Realizou-se um experimento com o objetivo de estudar a suplementação de sódio para poedeiras comerciais no segundo ciclo de produção. Foram utilizadas 360 aves Lohmann - LSL, distribuídas em gaiolas convencionais, onde receberam 5 tratamentos experimentais (níveis de sódio suplementar de 0,05; 0,10; 0,15; 0,20 e 0,25%), com 6 repetições de 12 aves cada, avaliados em 3 períodos de 21dias. O delineamento experimental foi o inteiramente casualizado em esquema de parcelas subdivididas, sendo os tratamentos designados nas parcelas e as avaliações nos períodos, nas subparcelas. As rações foram isonutritivas à base de milho e farelo de soja e fornecidas à vontade. O sódio suplementar foi adicionado às dietas usando o NaCl contendo 39,7% desse elemento. Ao final...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sódio; Poedeiras; Produção de ovos; Segundo ciclo; Qualidade de casca dos ovos.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000300008

Utilização de Prebióticos, Probióticos ou Simbióticos em Dietas para Frangos
Provedor de dados: 89
Autores: Maiorka,A; Santin,E; Sugeta,SM; Almeida,JG; Macari,M.
Foi investigado o efeito da substituição de antibióticos por prebiótico, probiótico e simbiótico em dietas para frangos de corte de 1 a 45 dias de idade. Foram utilizados 750 pintos de 1 dia de idade, distribuídos em cinco tratamentos, sendo: T1-sem aditivos, T2-antibiótico (Olaquindox&lt;FONT FACE=Symbol&gt;â&lt;/FONT&gt; e Nitrovin&lt;FONT FACE=Symbol&gt;â&lt;/FONT&gt; ), T3-prebiótico (0,2% de parede celular de S. cerevisiae), T4-probiótico (300 ppm de B. subtilis) e T5-simbiótico (T3 + T4). O desempenho dos frangos de 1-45 dias de idade foi influenciado pelos diferentes tratamentos, sendo o melhor ganho de peso observado em aves que receberam o simbiótico, seguido daquelas com antibiótico, prebiótico e probiótico. O pior ganho de peso foi observado nas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibióticos; Frangos; Prebióticos; Probióticos; Simbióticos.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100008

Utilização de Trigo em ou Moído em Dietas Para Frangos de Corte
Provedor de dados: 89
Autores: Faria Filho,DE; Sakomura,NK; Junqueira,OM; Jacob,DV; Angelo,JC.
Foi conduzido um experimento com o objetivo de avaliar os efeitos da utilização de trigo em grão ou moído sobre o desempenho e as características de carcaça de frangos de corte nos períodos de 21 a 42 e 21 a 49 dias de idade. Foram utilizados 2240 machos, de 21 dias de idade, da linhagem Ross, distribuídos em um delineamento inteiramente ao acaso em esquema fatorial 2 x 3 mais uma testemunha sem inclusão de trigo, sendo os fatores a forma física do trigo (grão e moído) e os níveis de inclusão de trigo (15, 30 e 45%), totalizando sete tratamentos, com oito repetições de 40 aves cada. As dietas foram isoenergéticas e isonutricionais. Não ocorreram diferenças estatísticas entre os fatores estudados, assim como não ocorreram interações entre os fatores sobre...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Forma física do trigo; Frangos de corte; Rendimento de carcaça; Trigo.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000200006

Utilization of Different Corn Fractions by Broilers
Provedor de dados: 89
Autores: Costa,SIFR; Stringhini,JH; Ribeiro,AML; Pontalti,G; MacManus,C.
ABSTRACTThis study was conducted to evaluate the nutritional values of fractions of damaged corn. One hundred and eighty 22-d-old Cobb 500 male broilers were distributed in batteries according to a completely randomized design with six treatments of six replicates each. The treatments consisted of diets containing five corn fractions, classified as sound, fermented, insect-damaged, mold-damaged, or reference corn. The test diets consisted of 60% of reference diet + 40% of each corn fraction. Only the reference corn fraction included all the fractions at different proportions (0.8% fermented, 0.05% insect-damaged, 3.3% mold-damaged, and 95.85% sound grains). The method of total excreta collection was used to determine AMEn values and metabolizability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corn quality; Corn density; Metabolizable energy; Broilers.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300307

Utilization of fluorescent probe association for simultaneous assessment of plasmatic, acrosomal, and mitochondrial membranes of rooster spermatozoa
Provedor de dados: 89
Autores: Celeghini,ECC; Arruda,RP; Albuquerque,R; Silva,FHA; Faria,DE; Andrade,AFC; Nascimento,J; Raphael,CF.
This experiment was designed with the objective of developing a simple, practical, and high repeatability technique for the simultaneous evaluation of the integrity of the plasmatic and acrosomal membranes, as well as funcional mitochondria of domestic fowl spermatozoa using an association of fluorescent probes. Four ejaculates (motility &gt; 80% and abnormal morphology &lt; 10%) from each of six Ross male broiler breeder (n=24) were diluted in TALP sperm medium (25x10(6) spermatozoa/mL) and split into two aliquots, and one of these aliquots was flash frozen in liquid nitrogen and thawed to damage all cellular membranes. Three treatments were prepared from these aliquots, with the following ratios of Fresh semen:Flash frozen semen: 100:0 (T100), 50:50...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluorescent probes; Membranes; Rooster; Sperm.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000300001

Utilization of sunflower seed in laying hen rations
Provedor de dados: 89
Autores: Tsuzuki,ET; Garcia,ER de M; Murakami,AE; Sakamoto,MI; Galli,JR.
The objective of this trial was to evaluate the effect of sunflower seed inclusion (0, 1.4, 2.8, 4.2 and 5.6%) in a laying hen diet containing corn, soybean meal, wheat meal and soybean oil as main ingredients on performance and egg quality. The evaluated variables were daily feed intake, average egg weight, feed conversion (kg.kg-1 and kg.dz-1), eggshell percentage, yolk color and Haugh unit. One hundred and sixty 25 week-old Lohmann laying hens were used in a completely randomized design with five treatments and four replications of eight birds per experimental unit. Four periods of 28 days were evaluated during 112 days. The inclusion of sunflower seed in the diet had no effect on production parameters during the experimental period. Thus, can be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg quality; Laying hens; Performance; Sunflower seed.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000300004

Utilizing the House Fly (Musca Domestica) Larva as an Alternative to Soybean Meal in Broiler Ration During the Starter Phase
Provedor de dados: 89
Autores: Khan,M; Chand,N; Khan,S; Khan,RU; Sultan,A.
ABSTRACT A total of 120 one-day-old broiler chicks (Ross 308) were randomly assigned to 12 pens of 10 birds in a completely randomized design (CRD). In four experimental diets, soya bean meal was replaced with a maggot meal at the rate of 0, 40, 50 and 60% designated as group A, B, C and D respectively. Body weight was significantly higher (p&lt;0.05), whereas feed intake and feed conversion ratio (FCR) were significantly lower in group D than group A and B. Dressing percentage and apparent metabolizable energy were significantly (p&lt;0.05) higher in group D than group A, B and C. Digestibility of dry matter, crude protein, ether extract and ash were significantly (p&lt;0.05) higher, and crude fiber was significantly (p&lt;0.05) lower in group D than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Digestibility; Maggot meal; Protein; Soybean meal.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100009

Validation of Alternative Methods of Detection of Salmonella Spp. in Experimentally Contaminated Poultry Environmental Samples
Provedor de dados: 89
Autores: Coelho,LR; Melo,RT; Monteiro,GP; Reischak,D; Mendonça,AO; Tavares,AAS; Rossi,DA.
ABSTRACT The analysis of Salmonella in the feces and the birds’ environment is a way of monitoring the colonization in the flocks and verifying the need for the introduction of stricter controls, in such a way that the results of the tests should be known before being sent for slaughter. The polymerase chain reaction (PCR), as well as other rapid methods represent alternatives increasingly used to detect enteric pathogens, but they need proof of effectiveness for their wide use. The aim of this study was to evaluate the equivalence between the results obtained by the methods: real-time PCR (BAX® System), Modified Rappaport-Vassiliadis Semi-solid Medium (MSRV) (ISO 6579) and the traditional method of official reference in Brazil for research of S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BAX® System; MSRV; Salmonella Enteritidis; S. Typhimurium; Molecular biology.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000200303

Values of Metabolizable Energy and Metabolization of Nutrients for Slow- and Fast-growing Birds at Different Ages
Provedor de dados: 89
Autores: Santos,FR; Stringhini,JH; Oliveira,PR; Duarte,EF; Minafra,CS; Café,MB.
ABSTRACT Two trials were performed to determine apparent metabolizable energy (AME) and AME corrected for zero nitrogen balance (AMEn) values and coefficients of apparent metabolizability of nitrogen (CAMN) and of ether extract (CAMEE) of slow- and fast-growing broilers (Isa label and Cobb, respectively) fed four different diets between 10 to 17 days or 28 to 35 days of age. The method of total excreta collection was applied. The tested feedstuffs were corn, whole corn germ (WCG), sorghum, and soybean meal (SBM). A randomized block experimental design was applied, with two treatments (breeds) and four replicates of ten animals each in the first trial, and four replicates of six animals each in the second trial. No differences in CAMN values were observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cobb; Total excreta collection; Feed chemical composition; Isa Label.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400517

Variables impacting poultry meat quality from production to pre-slaughter: a review
Provedor de dados: 89
Autores: Baracho,MS; Camargo,GA; Lima,AMC; Mentem,JF; Moura,DJ; Moreira,J; Nääs,IA.
Poultry meat quality has been widely studied, and has become a growing demand of the international market. Parameters that affect meat quality are complex, and occur throughout the production chain. The constant concern with meat quality by the exporting sectors is a response to consumers' demands, and is achieved by increasing efficiency, and investments in personnel training on quality. Understanding where critical points are in the poultry meat production chain, and investing in solving critical problems may lead to better control and management, and consequent reduction of losses. Production and management practices, from farm to processing plant, play an important role in meat quality, and the use of technologies to reduce risk factors throughout the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meat hygiene; Meat quality; Pre-processing; Production chain.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400001

Variance components for body weight in Japanese quails (Coturnix japonica)
Provedor de dados: 89
Autores: Resende,RO; Martins,EN; Georg,PC; Paiva,E; Conti,ACM; Santos,AI; Sakaguti,ES; Murakami,AE.
The objective of this study was to estimate the variance components for body weight in Japanese quails by Bayesian procedures. The body weight at hatch (BWH) and at 7 (BW07), 14 (BW14), 21 (BW21) and 28 days of age (BW28) of 3,520 quails was recorded from August 2001 to June 2002. A multiple-trait animal model with additive genetic, maternal environment and residual effects was implemented by Gibbs sampling methodology. A single Gibbs sampling with 80,000 rounds was generated by the program MTGSAM (Multiple Trait Gibbs Sampling in Animal Model). Normal and inverted Wishart distributions were used as prior distributions for the random effects and the variance components, respectively. Variance components were estimated based on the 500 samples that were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bayesian inference; Heritability; Maternal environment.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100004

Variations in Tissue-Specific Expression of Adipose Differentiation-Related Protein Gene in Two Native Yunnan Chicken Breeds
Provedor de dados: 89
Autores: Zhang,B; Xiang,D; Yang,R; Yang,L; Li,J; Zhao,Z.
ABSTRACT Adipose differentiation-related protein (ADFP) is a fatty acid-binding protein that can promote the absorption of long-chain fatty acids. However, few results have been published regarding its role in Yunnan Native chicken breeds. The aim of this study was to determine ADFP gene tissue-specific expression in Piao chickens (PC) and Wuliangshan black-bone chickens (WBC) by RT-qPCR. The ontogenetic expression levels of the ADFP gene were significantly different during growth and development phases in the subcutaneous fat, liver, and pectoralis muscle of PC, and in the subcutaneous fat, liver, and pectoralis muscle of WBC (p&lt;0.05). Individual tissue-differential expression levelswere detectedon d 91 and 112 in PC, with highest levels determined in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ADFP; Carcass fatness; Piao chickens; RT-qPCR; Wuliangshan black-bone chickens.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100318

Vegetable Waste Inclusion in Broiler Diets and its Effect on Growth Performance, Blood Metabolites, Immunity, Meat Mineral Content and Lipid Oxidation Status
Provedor de dados: 89
Autores: Raza,A; Hussain,J; Hussnain,F; Zahra,F; Mehmood,S; Mahmud,A; Amjad,ZB; Khan,MT; Asif,M; Ali,U; Badar,IH; Nadeem,M.
ABSTRACT The aim of present study was to evaluate the effect of feeding vegetable waste (VW) to broilers on their growth performance, serum chemistry, immune status, meat mineral content and lipid oxidation status. For this purpose, 100 one-day-old chicks (Cobb 500) were acquired from a commercial hatchery and allocated according to a completely randomized design into five dietary treatments with four replicates of five birds each. The dietary treatments included: T1 (   100 %  c o m m e r c i a l  f e e d   (  C F )  +  0 %  V W), T2 (   75 %  C F  +  25 %  V W), T3 (   50 %  C F  +  50 %  V W), T4 (   25 %  C F  +  75 %  V W) and T5 (   0 %  C F  +  100 %  V W). Experimental birds were subjected to dietary treatments from 5 to 7 weeks of age. At the end...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative feed; Commercial feed; Meat evaluation; Poultry production.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100315

Vertebral Osteomyelitis in Broilers: A Review
Provedor de dados: 89
Autores: Braga,JFV; Martins,NRS; Ecco,R.
ABSTRACT Locomotor diseases are still a challenge in modern poultry. Vertebral osteomyelitis (VO) is an emerging disease in broilers worldwide. The inflammatory process in the affected thoracic vertebra (T4) and subsequent spinal cord compression leads to clinical signs related to locomotor impairment, inadequate feeding and drinking, and increased mortality in the affected flocks. The pathogenesis of the disease is poorly understood and Enterococcus cecorum is the bacterium most frequently associated with the disease. However, other bacteria such as E. faecalis, E. durans, Escherichia coli and Staphylococcus aureus have been recently detected in cases of the disease, raising questions regarding its etiopathogenesis. As many questions about VO in broilers...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial infections; Enterococcus spp.; Enterococcus cecorum; Locomotor diseases; Poultry.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300605

Viscosidade do Sangue como Parâmetro de Diagnóstico da Síndrome Ascítica em Linhagens de Frangos de Corte com Diferentes Suscetibilidade
Provedor de dados: 89
Autores: Fontes,SF; Hernandes,R; Macari,M; Bernal,FM.
O objetivo deste trabalho foi investigar o desenvolvimento de ascites em duas linhagens diferentes de frangos de corte, Hubbard e Pescoço-pelado, através da variação da viscosidade do sangue. As aves foram criadas até 45 dias de idade em duas temperaturas ambiente diferentes (termoneutra e fria) e com dieta de ração à base de milho e farelo de soja, peletizada e de alta energia. Aos 28 e 45 dias de idade, amostras de 8 mL de sangue foram obtidas para determinação da viscosidade aparente em um viscosímetro de cilindros concêntricos da marca Brookfield, modelo LVDII+ e para determinação do hematócrito. Aos 28 dias de idade foram verificadas algumas ocorrências de ascite nas aves da linhagem Hubbard criadas à temperatura ambiente fria, e aos 45 dias de idade,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascites; Sangue; Viscosidade; Hubbard; Pescoço-pelado.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000100007

Vitamins E and C Supplementation in Japanese Quail: Effects on Growth Performance and Biochemical and Haematological Parameters
Provedor de dados: 89
Autores: Khazaei,R; Requena,F; Seidavi,A; Martínez,AL.
ABSTRACT The effects of vitamins E and C supplementation on growth performance and biochemical and haematological parameters of Japanese quail were studied. A total of 360 one-day-old Japanese female quails were randomly allocated to nine dietary treatment groups (10 birds per replicate and 4 replicates per treatment), including a control (basal diet) and the basal diet supplemented with: 250 or 500 mg/kg of vitamin C, 250 or 500 mg/kg of vitamin E, 250 mg/kg of both vitamins E and C, 250 and 500 mg/kg of vitamins E and C, 500 and 250 mg/kg of vitamins E and C, and 500 mg/kg of both vitamins E and C. Vitamin supplementation improved productive parameters and raised the blood plasma levels of protein, thyroid-stimulating hormone, calcium and phosphorus,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Quail; Stress; Vitamin.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000200301

Water intake and digestive metabolism of broilers fed all-vegetable diets containing acidulated soybean soapstock
Provedor de dados: 89
Autores: Vieira,SL; Viola,ES; Berres,J; Coneglian,JLB; Freitas,DM; Bortolini,TCK.
A study was conducted to compare live performance and digestive metabolism of broiler chickens fed all-vegetable diets (All-Veg) compared to a regular diet including animal by-products. Three feeds were formulated and provided to broilers according to the feeding program: pre-starter from 1 to 10 days, starter from 11 to 21 days, and grower from 21 to 35 days. All feeds had corn and soybean meal as major ingredients; however, two of them were all-vegetable diets having either Degummed Soybean Oil (DSO) or Acidulated Soybean Soapstock (ASS) as fat sources. The third diet included poultry by-product and poultry fat. A total number of 360 day-old broiler chicks were allocated to 1m² battery cages, 10 chicks in each, and 12 replicates per treatment. Live...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidulated soybean soapstock; All vegetable diets; Broiler; Metabolizability; Water intake.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300004

Water intake behavior of broiler chickens exposed to heat stress and drinking from bell or and nipple drinkers
Provedor de dados: 89
Autores: Bruno,LDG; Maiorka,A; Macari,M; Furlan,RL; Givisiez,PEN.
The aspects involved in broiler water intake are not well known, despite the importance of water in animal nutrition and physiology. Water intake behavior should be taken into account when deciding on different types of drinkers. Bell and nipple drinkers are the most commonly used in commercial broiler production. Broilers were housed in cages equipped with two different drinker types and raised at two different environmental temperatures (25 and 34 ºC) to evaluate water intake behavior and volume. Broiler water intake behavior was influenced by drinker type. Birds visited bell drinkers less often, but presented higher total water intake per visit to the drinker as compared to those drinking from nipple drinkers. The results of this study suggest that both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Broilers; Ingestion pattern; Water.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200009

WELFARE OF BROILERS INGESTING A PRE-SLAUGHTER HYDRIC DIET OF LEMON GRASS
Provedor de dados: 89
Autores: Royer,AFB; Garcia,RG; Borille,R; Santana,MR; Nääs,IA; Caldara,FR; Almeida Paz,ICL; Zeviani,WM; Alves,FMS; Sgavioli,S; Mariano,WS.
ABSTRACTThe pre-slaughter period is considered critical in broiler production. Several factors contribute to increase the birds' stress, such as handling, harvesting, and transportation, negatively affecting their welfare. This study aimed at evaluating the addition of lemon grass (Cymbopogon citratusStapf) to the drinking water of broilers during the pre-slaughter period on their behavior, blood cortisol, and surface temperature. The study was carried out at the experimental farm of the Federal University of Grande Dourados (UFGD), Dourados, MS, Brazil. In total, 2594 broilers were distributed according to a completely randomized experimental design, in a 3x2x2 factorial arrangement, with four replicates per treatment. Treatments consisted of three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Blood cortisol; Phytotherapy; Body surface temperature.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300301

What determines hatchling weight: breeder age or incubated egg weight?
Provedor de dados: 89
Autores: Traldi,AB; Menten,JFM; Silva,CS; Rizzo,PV; Pereira,PWZ; Santarosa,J.
Two experiments were carried out to determine which factor influences weight at hatch of broiler chicks: breeder age or incubated egg weight. In Experiment 1, 2340 eggs produced by 29- and 55-week-old Ross® broiler breeders were incubated. The eggs selected for incubation weighed one standard deviation below and above average egg weight. In Experiment 2, 2160 eggs weighing 62 g produced by breeders of both ages were incubated. In both experiments, 50 additional eggs within the weight interval determined for each breeder age were weighed, broken, and their components were separated and weighed. At hatch, hatchlings were sexed and weighed, determining the average initial weight of the progeny of each breeder age. Data were analyzed using the Analyst program...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albumen; Eggshell; Hatchling weight; Incubation; Yolk.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400011

Work activities and workers' health in broiler production: a case study
Provedor de dados: 89
Autores: Alencar,M do CB de; Naas,IA; Gontijo,LA.
The objective of this study was to investigate the prevalence of health related symptoms and to analyze the work activities of workers in contracted non-mechanized broiler farms in two regions of the state of Paraná in order to determine possible factors associated to those symptoms. The methods consisted in selecting the houses and the workers, and to apply a questionnaire that included demographic data, questions related to work, the Nordic Questionnaire for Musculoskeletal Symptoms, other symptoms (runny nose, skin itching, throat and eye irritation). In addition, workers were asked if they enjoyed their job, if the supervisor motivated them to work, and if they were afraid to lose their job. Activities were submitted to systematic observations, adapted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ergonomics; Manual activities; Occupational health; Poultry production.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200001

Yield and carcass composition of broilers fed with diets based on the concept of crude protein or ideal protein
Provedor de dados: 89
Autores: Toledo,GSP; López,J; Costa,PTC.
Two experiments were conducted to evaluate the effect of diets formulated using the criteria of crude protein (CP) and ideal protein (IP) on the yield and carcass composition of male and female broilers. Birds of two broilers strains (Hybro G and Hybro PG) were reared from 1 to 42 days of age during the summer, with average temperatures of 26°C. A completely randomized experimental design was used in a 2 x 2 factorial arrangement, with 6 replicates and 20 birds per pen. On day 42, four birds from each experimental unit were killed and carcass yield and composition were determined. Breast yield was higher in males and females fed the IP-based diet than in birds fed the CP-based diet. Abdominal fat pad and carcass crude protein were statistically similar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Carcass composition; Crude protein; Carcass yield; Ideal protein.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400005

Yolk Color and Lipid Oxidation of the Eggs of Commercial White Layers Fed Diets Supplemented with Vegetable Oils
Provedor de dados: 89
Autores: Faitarone,ABG; Garcia,EA; Roça,RO; Andrade,EN; Vercese,F; Pelícia,K.
ABSTRACT The objective of this study was to evaluate the influence of the supplementation of vegetable oils rich in polyunsaturated fatty acids to the diet of Leghorn layers on yolk color and on yolk lipid oxidation of eggs stored at room temperature for 10 days. Sixty eggs laid by commercial white layers (Lohmann LSL) fed diets supplemented with different vegetable oils were used. Hens were fed one of the following treatment diets: conventional diet with no oil inclusion (T1); T1 diet with 2.5% linseed oil inclusion (T2); T1 diet with 2.5% canola oil (T3); T1 diet with 2.5% soybean oil (T4); T1 with 5.0% linseed oil (T5); T1 diet with 5.0% canola oil (T6); T1 diet with 5.0% soybean oil (T7); T1 diet with 2.5% linseed oil + 2.5% soybean oil (T8); T1 diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyunsaturated fatty acids; Yolk color; Canola oil; Linseed oil; Soybean oil; TBARs.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100009