Consulta: subjectFacets:"Broiler"
Registros recuperados: 159
Data/hora: 13/06/2024 03:34:39

Arginina, vitaminas E y C en la respuesta inmune y estrés oxidativo en pollos de engorda con desafío a Eimeria spp y virus de la enfermedad del Newcastle.
Provedor de dados: 32
Autores: Domínguez Martínez, Pablo Alfredo.
La oxidación causada por patógenos es un problema de suma importancia en animales. Pollos mixtos, de un día de edad (Cobb 500, n=624) fueron asignados al azar a uno de seis tratamientos. Como testigo se utilizó una dieta base (T; 40 mg de VE kg-1 de alimento y 1.5% de ARG). El segundo tratamiento fue la dieta base + ARG (ARG; + 0.3%). El tercer tratamiento fue la dieta base + ARG + VE (AVE; + 0.3% y + 40 mg kg-1 de alimento). El cuarto tratamiento fue la dieta base + ARG + VC (AVC; + 0.3%  + 1 g kg-1 de alimento). El quinto tratamiento fue la dieta base suplementada con VE + VC (VEC; + 40 mg + 1 g kg-1 de alimento). El sexto tratamiento fue la dieta base + ARG + VE + VC (AVEC; + 0.3% + 40 mg + 1 g kg-1 de alimento). Al día 14 todos los pollitos fueron...
Palavras-chave: Arginina; Vitamina E; Vitamina C; Eimeria; Pollo de engorda; Arginine; Vitamin E; Vitamin C; Broiler; Ganadería; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2351

Behavior of chicks subjected to thermal challenge
Provedor de dados: 70
Autores: Ferraz,Patricia F. P.; Yanagi Junior,Tadayuki; Alvarenga,Talita A. C.; Reis,Gregory M.; Campos,Alessandro T.
In the first week of a chick life, broilers are very sensitive to different conditions outside their thermoneutral zone. Thus, the goal of this study was to evaluate the behaviors and productive responses of broilers subjected to conditions of thermal comfort or challenge at different intensities (27, 30, 33 and 36ºC) and durations (1, 2, 3 and 4 days starting on the second day of life). In the experiment, ten minutes of images from each hour of each treatment were analyzed to evaluate the key behaviors of the birds. Similar behavior at different dry-bulb air temperatures were identified by using Ward's method of cluster analysis. These behaviors were grouped by dendograms in which the similarity of these data was qualified. Feed intake, water intake and...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Grouping of data; Dendogram; Broiler; Productive responses.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600002

LED TUBS ARTIFICIAL LIGHTING SYSTEM IN BROILER PRODUCTION
Provedor de dados: 70
Autores: Seber,Rogério; Moura,Daniella; Lima,Nilsa; Massari,Juliana.
ABSTRACT Light is important for the physiology and zootechnical development of broilers and is characterized by the type of source defined by the spectral emission and geometry of the lamp, as well as the intensity and spatial distribution of the illuminance. The aim of this study was to verify the influence of an artificial lighting system based on tubular Light Emitting Diode (LED) lamps on the productive performance of broilers. The study was carried out in two broiler houses located in Londrina-PR. The lighting system for one of the broiler houses was composed of 52 tubular LED bulbs of 18 W powers, and the control broiler house consisted of 75 incandescent bulbs with 60 W powers. This research was divided into two parts; the first phase was evaluated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Light; Tubular light emitting diode.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000300319

EVATUATION SYSTEM OF EXHAUST FANS USED ON VENTILATION SYSTEM IN COMMERCIAL BROILER HOUSE
Provedor de dados: 70
Autores: Silva,Wagner; Moura,Daniella; Carvalho-Curi,Thayla; Seber,Rogério; Massari,Juliana.
ABSTRACT: This study aim to develop a system, called FANS-N, for evaluation the exhaust fans in the ventilation system of broiler facilities. The system is divided into: 1) Mechanical Structure - consisting of two stepper motors for positioning a anemometer sensor in the vertical and horizontal coordinates; 2) Electronic Interface - control of the anemometer positioning and record data of wind speed; 3) Control Programming Module – accountable for the cursor movement, measurement and record the wind speed data with the anemometer at predetermined points; and 4) Analysis Programming Module - responsible for the interpretation of wind speed values at each point. The software uses artificial neural networks (Multi-Layer Perceptron) for images analyses of data...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Neural network; Ventilation systems; Air flow.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000500887

Genetic parameters for body weight, carcass chemical composition and yield in a broiler-layer cross developed for QTL mapping
Provedor de dados: 74
Autores: Nunes,Beatriz do Nascimento; Ramos,Salvador Boccaletti; Savegnago,Rodrigo Pelicioni; Ledur,Mônica Corrêa; Nones,Kátia; Klein,Claudete Hara; Munari,Danísio Prado.
The objective of this study was to estimate genetic and phenotypic correlations of body weight at 6 weeks of age (BW6), as well as final carcass yield, and moisture, protein, fat and ash contents, using data from 3,422 F2 chickens originated from reciprocal cross between a broiler and a layer line. Variance components were estimated by the REML method, using animal models for evaluating random additive genetic and fixed contemporary group (sex, hatch and genetic group) effects. The heritability estimates (h²) for BW6, carcass yield and percentage of carcass moisture were 0.31 ± 0.07, 0.20 ± 0.05 and 0.33 ± 0.07, respectively. The h² for the percentages of protein, fat and ash on a dry matter basis were 0.48 ± 0.09, 0.55 ± 0.10 and 0.36 ± 0.08,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Carcass composition; Genetic correlation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300011

Producao e manejo de frangos de corte.
Provedor de dados: 14
Autores: AVILA, V. S. de; JAENISCH, F. R. F.; PIENIZ, L. C.; LEDUR, M. C.; ALBINO, L. F. T.; OLIVEIRA, P. A. V. de.
Escolha do pinto; Cama para aviario; Circulo de protecao; Recebimento dos pintos no balcao; Aquecimento; Manejo das cortinas; Iluminacao; VBebedouros; Agua; Comedouros; Edificacoes para frangos de corte; Alimentacao; Criacao com separacao de sexo; Avaliacao de desempenho do lote; Sanidade.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Broiler; Production; Management.; Frango de Corte; Manejo; Produção.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433992

Avaliação de subprodutos da industrialização de óleo de soja como fonte de energia em rações para frangos de corte.
Provedor de dados: 14
Autores: ALBINO, L. F. T.; JAENISCH, F. R. F.; LIMA, G. J. M. M. de; GOMES, P. C.; BARBIERI, D.
bitstream/item/58592/1/CUsersPiazzonDocuments200.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Broiler; By-products.; Frango de Corte; Nutrição; Subproduto.; Nutrition.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/434266

Exigência de fósforo e sua disponibilidade nos fosfatos monoamônio e monocálcico para frangos de corte até 21 dias de idade.
Provedor de dados: 14
Autores: GOMES, P. C.; GOMES, M. F. M.; LIMA, G. J. M. M. de; BELLAVER, C.
bitstream/item/58594/1/CUsersPiazzonDocuments198.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Exigência; Broiler; Requirement.; Frango de Corte; Fósforo; Nutrição.; Nutrition; Phosphorus.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/434253

Influência do preço externo no preço interno de frango.
Provedor de dados: 14
Autores: GOMES, M. F. M.; TALAMINI, D. J. D.
bitstream/item/58658/1/CUsersPiazzonDocuments188.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Broiler; Market; Price.; Frango de Corte; Mercado; Preço.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/434059

Substituição do milho pelo sorgo sacarino em rações de frangos de corte.
Provedor de dados: 14
Autores: ALBINO, L. F. T.; NERI, J. R.; SILVEIRA, J. J. N.; ARAUJO, J. D. de.
bitstream/item/59179/1/CUsersPiazzonDocuments37.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Sorgo sacarino; Broiler; Sorghum.; Frango de Corte; Milho.; Corn.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433903

Utilização da soja integral tostada na alimentação de frangos de corte.
Provedor de dados: 14
Autores: PIENIZ, L. C.; ALBINO, L. F. T.; BELLAVER, C.; BRUM, P. A. R. de.
bitstream/item/58647/1/CUsersPiazzonDocuments197.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Soja tostada; Broiler; Feeding; Roasting soy.; Alimentação; Frango de Corte.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/434250

Alta densidade na produçao de frangos de corte.
Provedor de dados: 14
Autores: ABREU, P. G. de; ABREU, V. M. N.
bitstream/item/59441/1/CUsersPiazzonDocuments10.pdf;  bitstream/item/59442/1/CUsersPiazzonDocuments10.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Instalação; Densidade; Broiler; Housing.; Frango de Corte.; Density.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/439412

Uso do resfriamento evaporativo (adiabático) na criação de frangos de corte.
Provedor de dados: 14
Autores: ABREU, P. G. de; ABREU, V. M. N.; MAZZUCO, H.
Princípio de funcionamento do resfriamento (adiabático) evaporativo; Regiões favoráveis a utilização do sistema evaporativo; Gráfico psicométrico; Sistemas de resfriamento evaporativo; Dimensionamento dos resfriadores; Desempenho do sistema de resfriamento.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Ambiência; Resfriamento evaporativo; Bem estar; Broiler; Misting system; Welfare.; Frango de Corte.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/437183

Farelo de canola: uma alternativa protéica para alimentação de suínos e aves.
Provedor de dados: 14
Autores: BERTOL, T. M.; MAZZUCO, H.
Composicao nutricional e fatores toxicos; Farelo de canola para suinos; Efeito sobre o desempenho; Fase inicial; Fase de crescimento-terminacao; Porcas em gestacao e lactacao; Efeito sobre a digestibilidade da dieta; Efeito sobre as caracteristicas de carcaca e qualidade da carne; Farelo de canola para aves; Experimentos de desempenho com matrizes e frangos de corte: emprego do farelo e grao integral de canola; Efeito da inclusao das diversas fracoes da canola sobre a digestibilidade e valores de energia metabolizavel (EM); Utilizacao da canola na alimentacao de poedeiras comerciais; Efeitos da presenca de canola em racoes para linhagens de poedeiras vermelhas.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Farelo de canola; Broiler; Feeding; Protein.; Alimentação; Frango de Corte; Proteína; Suíno.; Canola meal; Swine.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/434910

Utilização do fosfato de tapira em dietas de frangos de corte.
Provedor de dados: 14
Autores: GOMES, P. C.; ALBINO, L. F. T.; GUIDONI, A. L.; BRUM, P. A. R. de; LEAL, P. M.
bitstream/item/58576/1/CUsersPiazzonDocuments210.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Fosfato de tapira; Broiler; Ration; Tapira phosphate.; Frango de Corte; Ração.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433751

Síndrome da hipertensão pulmonar: a ascite em frangos de corte.
Provedor de dados: 14
Autores: JAENISCH, F. R. F.; AVILA, V. S. de; MAZZUCO, H.; ROSA, P. S.; FIORENTIN, L.
bitstream/item/57929/1/CUsersPiazzonDocumentsCIT-27.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Broiler; Ascitis.; Ascite; Frango de Corte.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/430502

Farinha integral e raspa residual de mandioca na alimentação de frangos de corte.
Provedor de dados: 14
Autores: BRUM, P. A. R. de; ALBINO, L. F. T.
bitstream/item/58593/1/CUsersPiazzonDocuments199.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Broiler; Feeding.; Alimentação; Frango de Corte; Mandioca.; Cassava.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/434260

Exigência de fósforo disponível para frangos de corte nas fases de crescimento e terminação.
Provedor de dados: 14
Autores: GOMES, P. C.; GOMES, M. F. M.; ALBINO, L. F. T.; FIALHO, F. B.; LIMA, G. J. M. M. de.
bitstream/item/58575/1/CUsersPiazzonDocuments211.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Broiler; Ration; Growing.; Crescimento; Fósforo; Frango de Corte; Ração; Terminação.; Finishing; Phosphorus.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433749

Uso do PVC (Viniagro) na melhoria do condicionamento ambiental de frangos de corte.
Provedor de dados: 14
Autores: PERDOMO, C. C.
bitstream/item/119023/1/COT227.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Instalação; Bem estar; Broiler; Housing; Behaviour.; Frango de Corte.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433744

Uso do tremoço amargo (Lupinus albus) como fonte alternativa de proteínas em rações para frangos de corte.
Provedor de dados: 14
Autores: ALBINO, L. F. T.; FERREIRA, A. S.; FIALHO, E. T.; PROTAS, J. F. da S.; MICHELAN FILHO, T.
bitstream/item/59143/1/CUsersPiazzonDocuments62.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Tremoço amargo; Broiler; Ration.; Frango de Corte; Ração.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/435261

A cadeia produtiva do frango de corte no Brasil e na Argentina.
Provedor de dados: 14
Autores: CANEVER, M. D.; TALAMINI, D. J. D.; CAMPOS, A. C.; SANTOS FILHO, J. I. dos.
O desenvolvimento da agroindustria avicola brasileira e argentina; A agroindustria avicola no Brasil; A agroindustria avicola na Argentina; A teoria competitiva e o modelo de "Porter"; Evolucao da teoria competitiva; O modelo competitivo de "Porter" na agroindustria do frango de corte; Os determinantes da competitividade da agroindustria avicola brasileira e argentina; Condicoes de demanda; As interrelacoes da demanda; Estrategias mercadologicas e composicao da demanda; Condicoes de fatores; Custos de producao do frango vivo; As condicoes de fatores de maior importancia na producao do frango vivo; Instalacoes e equipamentos; Cama; Graos; Recursos energeticos; Mao-de-obra; Transportes; Industrias correlatas e de apoio; Material genetico; Produtos...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Brasil; Broiler; Production; Economy.; Economia; Frango de Corte; Produção.; Argentina; Brazil; Poultry.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433669

Ventilacao na avicultura de corte.
Provedor de dados: 14
Autores: ABREU, P. G. de; ABREU, V. M. N.
Sistemas de ventilacao em aviarios; Tipos de ventilacao; Ventilacao natural ou espontanea; Ventilacao dinamica; Ventilacao termica; Aberturas de ventilacao; Quebra-ventos; Localizacao do aviario para aproveitamento da ventilacao natural; Ventilacao de verao e inverno; Ventilacao artificial, mecanica, ou forcada; Sistema de pressao negativa ou exaustao; Sistema de pressao positiva ou pressurizacao; Ventiladores; Tipos de ventiladores; Localizacao; Controles automaticos; Velocidade do ventilador; Manutencao.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Instalacao; Broiler; Housing; Ventilation.; Frango de Corte; Ventilação.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/438094

Distribution and Quantification of Lymphocytes in the Major Lymphoid Organs of Naturally Gumboro Infected Broilers
Provedor de dados: 77
Autores: Uddin,Mohammad Mejbah; Islam,Mohammad Saiful; Basu,Joyita; Khan,Md. Zahirul Islam.
Gumboro disease is caused by the infectious bursal disease virus (IBDV) which rapidly destroys immature B-lymphocytes of bursa of Fabricious, and causes immune suppression and high mortality in commercial broiler farms in Bangladesh. To investigate the possible effect of IBDV on lymphocytes and its distribution in the major lymphoid organs, bursa of Fabricious including spleen and thymus of naturally Gumboro-infected broilers, a research was conducted in the Department of Anatomy and Histology, collaboration with the Department of Pathology, Bangladesh Agricultural University, Bangladesh. Bursa of Fabricious, spleen and thymus of 21-days-old Gumboro-infected and non-infected broilers of same age (control) were routinely processed and stained by hematoxylin...
Tipo: Journal article
Palavras-chave: Lymphocyte; Gumboro; Lymphoid organs; Broiler.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400050

Performance of chicks subjected to thermal challenge
Provedor de dados: 86
Autores: Ferraz,Patrícia Ferreira Ponciano; Yanagi Junior,Tadayuki; Lima,Renato Ribeiro de; Ferraz,Gabriel Araújo e Silva; Xin,Hongwei.
Abstract: The objective of this work was to evaluate the effect of thermal challenge at different intensities and durations on the production responses of 3 to 21-day-old broiler chickens. Two hundred and ten Cobb chicks were subjected to dry-bulb temperatures (tdb) of 27, 30, 33, or 36°C for the duration of 0, 1, 2, 3, or 4 days from the second day of life onwards. The experiment was carried out in four identical environmentally-controlled wind tunnels. Data on body mass (BM), feed intake (FI), and water intake (WI), all in grams, were monitored daily; and body weight gain (BWG), in grams, and feed conversion (FC) were also calculated. The effect of duration was not statistically significant. Empirical models were adjusted to relate BM, FI, and WI with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air temperature; Broiler; Carry-over effect; Production responses; Thermal stress.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000200113

Predicting chick body mass by artificial intelligence-based models
Provedor de dados: 86
Autores: Ferraz,Patricia Ferreira Ponciano; Yanagi Junior,Tadayuki; Hernández Julio,Yamid Fabián; Castro,Jaqueline de Oliveira; Gates,Richard Stephen; Reis,Gregory Murad; Campos,Alessandro Torres.
The objective of this work was to develop, validate, and compare 190 artificial intelligence-based models for predicting the body mass of chicks from 2 to 21 days of age subjected to different duration and intensities of thermal challenge. The experiment was conducted inside four climate-controlled wind tunnels using 210 chicks. A database containing 840 datasets (from 2 to 21-day-old chicks) - with the variables dry-bulb air temperature, duration of thermal stress (days), chick age (days), and the daily body mass of chicks - was used for network training, validation, and tests of models based on artificial neural networks (ANNs) and neuro-fuzzy networks (NFNs). The ANNs were most accurate in predicting the body mass of chicks from 2 to 21 days of age...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal welfare; Artificial neural network; Broiler; Modeling; Neuro-fuzzy network; Thermal comfort.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000700559

CONSUMER INTENTIONS OF BUYING POULTRY MEAT UNDER PERCEIVED BIOLOGICAL, CHEMICAL OR TECHNOLOGICAL RISK IN FINLAND
Provedor de dados: 31
Autores: Heikkila,   Jaakko; Pouta,   Eija; Forsman-Hugg,   Sari; Makela,   Johanna.
The study focuses on various types of food safety risks: biological (zoonoses), chemical (chemical treatment of the meat) and technological (use of genetically modified feed). The emphasis was on how the perceived risks affect the purchase intentions in the case of broiler meat. In the case of each risk products the attitude-level variables had importance in explaining the buying intentions. The heterogeneity of the respondents regarding the purchase intentions of risk products was analysed by latent class logistic regression that included all three risk products. About 60% of the respondents belonged to the group of risk avoiders in which the purchase intention of risk food was significantly lower than in the second group of risk neutrals in which 64% of...
Tipo: Conference Paper or Presentation
Palavras-chave: Broiler; Consumer behaviour; Risk; Food safety; Consumer heterogeneity; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; C25; D12; Q18.
Ano: 2010
URL: http://purl.umn.edu/116403

THE OPERATION OF THE HUNGARIAN BROILER PRODUCT CHAIN
Provedor de dados: 31
Autores: Szollosi,   Laszlo.
The general objective of this paper is to present the inner connections of the broiler product chain and the process of value generation in the economic situation of 2007. I introduce the input-output model of the broiler product chain adapted from macro-economic analysis, in which I calculated the direct connections of the product chain phases and between the national economic branches outside the chain. Then I point to the disproportion of the product chain through the profit distribution. Moreover, to evaluate the process of the value generation I demonstrate the value added generated along the value chain (year 2007). On the basis of the results 825 EUR of value added is realized to one ton of ready product (chicken meat), from which the major portion...
Tipo: Journal Article
Palavras-chave: Broiler; Product chain; Input-output model; Value generation; Value added; Agricultural and Food Policy; Livestock Production/Industries; Research Methods/ Statistical Methods; Teaching/Communication/Extension/Profession.
Ano: 2009
URL: http://purl.umn.edu/53566

Costs and Benefits of Two Alternative Salmonella Control Policies in Finnish Broiler Production
Provedor de dados: 31
Autores: Kangas,   Susanna; Lyytikainen,   Tapani; Peltola,   Jukka; Ranta,   Jukka; Maijala,   Riitta.
In this study, costs and benefits of two Salmonella control options in broiler production were compared. The first option was to control Salmonella as set by Council Directive 92/117/EEC, so-called Zoonosis Directive. The second option was more intense control programme, the so-called Finnish Salmonella control programme. The costs of controlling Salmonella in primary and secondary production and the direct and indirect losses due to Salmonella infection in humans in both options were compared. The national control option was found to be economically feasible. One prevented loss of life covered all the control costs of the national programme.
Tipo: Conference Paper or Presentation
Palavras-chave: Salmonella; Broiler; Cost-benefit; Control; Food Consumption/Nutrition/Food Safety.
Ano: 2004
URL: http://purl.umn.edu/24981

USE OF POULTRY LITTER AND OTHER BIOMASS IN ELECTRICITY PRODUCTION AND ITS IMPLICATION FOR ECONOMIC DEVELOPMENT
Provedor de dados: 31
Autores: Paudel,   Krishna P.; Bhattarai,   Keshav; Bhandari,   Doleswar.
Poultry litter is a byproduct of poultry production which has potential to cause water quality problem if it is not applied properly on land as a nutrient source. Using survey information available from Louisiana broiler producers, we found that broiler litter is not cost‐effective to transport farther than 24 miles from the production facilities given the crops grown in the region and other prevailing cost parameters. Alternative to broiler litter use on land as crop nutrients is its use as electricity production through combustion. We found that biomass‐electricity conversion is cost prohibitive if three small plant operations are established. It can be profitable if one large size plant of 10.5 MW is constructed, litter is available free, transportation...
Tipo: Conference Paper or Presentation
Palavras-chave: Broiler; Breakeven transportation distance; Poultry‐electricity production feasibility; Impact factor; Production Economics; Resource /Energy Economics and Policy; O13; Q42; Q53.
Ano: 2010
URL: http://purl.umn.edu/61805

CONSUMER WILLINGNESS-TO-PAY FOR FARM ANIMAL WELFARE IN GERMANY - THE CASE OF BROILER
Provedor de dados: 31
Autores: Makdisi,   Fadi; Marggraf,   Rainer.
Estimating the value consumers place on farm animal welfare (FAW) can predict the extent to which consumers are ready to support policy changes aimed at improving the welfare of farm animals and developing animal-friendly production systems that can also compete on markets. This study aimed at exploring consumer preferences and willingness-to-pay (WTP) for broiler meat in Germany which is certified as having been produced under a system that caters for FAW. In addition, logistic and linear regression models were estimated to examine the factors affecting consumers’ decision to buy certified FAW products. The data was obtained from a survey of 300 German broiler consumers, which was designed using the contingent valuation methodology. The results showed...
Tipo: Conference Paper or Presentation
Palavras-chave: Farm animal welfare (FAW); Broiler; Contingent valuation method (CVM); Willingness-to-pay (WTP); Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/115359

Differences in qualitative aspects of broiler meat demand in Spain. Part 1: Home Consumption
Provedor de dados: 31
Autores: Colom,   Ale; Gosalvez,   M.; Clop-Gallart,   M. Merce; Averos,   X.; Juarez,   L.; Gosalvez,   L.
To know the Spanish homes reasons of purchasing broiler meat a survey of 1,000 families, by means of a 13 question interview, was carried out during 2007. After processing the information it was concluded that Spanish families purchase food an average of 2.34 times/week, 95% of which do not exceed 100 € and, with the exception of more than 400 € purchases, in more than 90% of which broiler meat accounts for more than 14% of the spent budget. Broiler meat is bought near home, in butcher’s shops or supermarkets, with purchases via telephone or the internet being marginal. The main declared benefits of consuming broiler meat were the low fat content, being a healthy meat, and being proper in a healthy diet. Surprisingly, 72% of interviewees did not see any...
Tipo: Conference Paper or Presentation
Palavras-chave: Home demand; Broiler; Meat Consumption; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety.
Ano: 2008
URL: http://purl.umn.edu/43545

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 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

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

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

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 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 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Genetic fuzzy system for prediction of respiratory rate of chicks subject to thermal challenges
Provedor de dados: 91
Autores: Ferraz,Patrícia F. P.; Yanagi Junior,Tadayuki; Hernandez-Julio,Yamid F.; Ferraz,Gabriel A. e S.; Silva,Maria A. J. G.; Damasceno,Flavio A.
ABSTRACT The aim of this study was to estimate and compare the respiratory rate (breath min-1) of broiler chicks subjected to different heat intensities and exposure durations for the first week of life using a Fuzzy Inference System and a Genetic Fuzzy Rule Based System. The experiment was conducted in four environmentally controlled wind tunnels and using 210 chicks. The Fuzzy Inference System was structured based on two input variables: duration of thermal exposure (in days) and dry bulb temperature (°C), and the output variable was respiratory rate. The Genetic Fuzzy Rule Based System set the parameters of input and output variables of the Fuzzy Inference System model in order to increase the prediction accuracy of the respiratory rate values. The two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Computational intelligence; Physiological responses.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000600412

Physicochemical and microbiological parameters of frozen and chilled chicken meat
Provedor de dados: 96
Autores: Fernandes,Raimunda Thyciana Vasconcelos; Arruda,Alex Martins Varela de; Costa,Monik Kelly de Oliveira; Lima,Patrícia de Oliveira; Santos,Luiz Odonil Gomes dos; Melo,Aurora da Silva; Marinho,Jéssica Berly Moreira.
ABSTRACT With this study we aimed to evaluate and compare physicochemical and microbiological characteristics of frozen and chilled chicken meat. Only the prime cuts (breast, thighs, and drumsticks) were considered for the analysis of chemical composition, pH, color, water-holding capacity (WHC), thawing-cooking loss (TCL), and shear force (SF). For microbiological analysis, mesophilic bacteria, thermotolerant coliforms, and Salmonella spp. were considered. The frozen and chilled chicken meat showed no PSE (pale, soft, and exudative) or DFD (dark, firm, and dry) type of anomalies. The chromaticity showed higher redness in the breast (a* = 0.23) and yellowness in the thigh (b* = 5.64) for the frozen meat. The chilled meat showed better values for...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Broiler; Feed evaluation; Meat quality; Microbiology; PH.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000700417

In vitro free radicals scavenging activity and antioxidant capacity of solid-state fermented wheat bran and its potential modulation of antioxidative molecular targets in chicken PBMC
Provedor de dados: 96
Autores: Wang,Chaio-Chun; Chang,Chi-Huan; Chang,Shen-Chang; Fan,Geng-Jen; Lin,Min-Jung; Yu,Bi; Lee,Tzu-Tai.
ABSTRACT The purpose of this study was to demonstrate the in vitro free radical scavenging activity and antioxidant capacity in solid-state fermented wheat bran and its potential modulation of antioxidative molecular targets in chicken peripheral blood mononuclear cells (PBMC). After solid-state fermentation of wheat bran by white rot fungi for 12 d, the scavenging action of the fermented wheat bran extracts was 1, 1-diphenyl-2-picrylhydrazyl (DPPH), and the free radicals increased significantly, approximately 1.5-fold. Trolox equivalent antioxidant capacity of 1 mg/mL fermented wheat bran extracts was increased from 100 to 150 mM trolox antioxidant capacity after 12 d of fermentation. Moreover, the extracts exhibited 50% of the chelating capacity observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Feed additive; White rot fungi.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000800451

Prediction equations for energy values of animal meals obtained using meta-analysis
Provedor de dados: 96
Autores: Oliveira,Camilla Roana Costa de; Rabello,Carlos Bôa-Viagem; Souza,Janete Gouveia de; Nascimento,Guilherme Rodrigues do; Lopes,Elainy Cristina; Silva,Almir Ferreira da; Silva,Jaqueline de Cássia Ramos da; Macambira,Gabriel Miranda.
ABSTRACT The objective of this study was to determine prediction equations to estimate the nitrogen-corrected apparent metabolizable energy (AMEn) values of animal meals used in broiler diets through meta-analysis. A bibliographic review was undertaken with studies conducted in Brazil from 2000 to 2016 to catalogue information on AMEn values and the following chemical elements in the composition of the feedstuffs: crude protein (CP), ether extract (EE), gross energy (GE), mineral matter (MM), calcium (Ca), and phosphorus (P). Groups were also catalogued and formed according to sex and age of birds. Chemical correlations were analyzed, and a multiple linear regression model with the stepwise procedure was used to examine the association between the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AMEn; Broiler; Meat and bone meal; Metabolism; Prediction.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100537

Gut microflora and intestinal morphology changes of broiler chickens fed reducing dietary protein supplemented with lysine, methionine, and threonine in tropical environment
Provedor de dados: 96
Autores: Shazali,Nurhazirah; Loh,Teck Chwen; Foo,Hooi Ling; Samsudin,Anjas Asmara.
ABSTRACT This experiment aimed to discover the effect of reducing dietary protein supplemented with lysine, methionine, and threonine on growth performance, volatile fatty acid profile, and intestinal villus height and crypt depth of broilers, as well as the microflora counts isolated from broiler chicken faeces. A total of 288-day-old broilers were allocated to eight treatments with six replicates consisting of 36 birds per treatment. The diets contained dietary protein from 21 to 18% in starter diet and 18 to 16% in finisher diet supplemented with L-lysine, DL-methionine, and L-threonine at the same ratio for all dietary treatments. Body weight and feed intake were determined, and feed conversion ratio was calculated. Blood, intestine, and digesta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Broiler; Protein supplementation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100530

Yeast fermented additive enhances broiler growth
Provedor de dados: 96
Autores: Yasar,Sulhattin; Yegen,Mustafa Kemal.
ABSTRACT We investigated the effects of dietary supplementations of yeast (YFA) or non-yeast fermented additives (NYFA) at 5.0 and 10 g kg−1 on the performance parameters and the size of digestive organs of broiler chickens. An isocaloric and isonitrogenous basal diet used as negative control was added with 5.0 or 10.0 g kg−1 of YFA or NYFA. Each of five experimental diets was given to broiler chickens kept in three randomized floor pens, each with 21 birds, from one-day old to 42 days old. Although the feed intake of broiler chickens was not significantly influenced by the diets, there were significant increases in weight gain and improvements in feed conversion ratio and carcass yield in broiler chickens fed the diets supplemented with 5.0 and 10 g kg−1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Fermentation; Microbial additive; Yeast.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001000814

Optimization of solid-state fermentation conditions of Bacillus licheniformis and its effects on Clostridium perfringens-induced necrotic enteritis in broilers
Provedor de dados: 96
Autores: Lin,En-Ru; Cheng,Yeong-Hsiang; Hsiao,Felix Shih-Hsiang; Proskura,Witold S.; Dybus,Andrzej; Yu,Yu-Hsiang.
ABSTRACT In the present study, we examined the growth parameters of Bacillus licheniformis in solid-state fermentation (SSF) and evaluated the effects of Bacillus licheniformis-fermented products on Clostridium perfringens-challenged broilers. During four and six days of SSF, the highest viable biomass was observed at 5% glucose, 10% soybean meal, 3% yeast, and 50% initial moisture content. The Bacillus licheniformis SSF products were heat- and acid-resistant. Furthermore, the fermented products were able to inhibit the growth of Clostridium perfringens and Staphylococcus aureus in vitro. In feeding experiments, in a similar manner to the antibiotic treatment group, dietary supplementation of Bacillus licheniformis-fermented products significantly improved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Disease; Fermentation; Probiotics.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100506

Bioavailability and poultry fecal excretion of phosphorus from soybean-based diets supplemented with phytase
Provedor de dados: 96
Autores: Martins,Bianca Almeida Brandão; Borgatti,Laura Maria de Oliveira; Souza,Luiz Waldemar de Oliveira; Robassini,Simi Luiza Durante Aflalo; Albuquerque,Ricardo de.
Five hundred and four 1-day-old Cobb broiler chickens were randomly allotted to 18 treatments and fed a semi-purified basal diet (4 g/kg total phosphorus) supplemented with 2 levels of supplemental P (0.5 or 1 g/kg) during 21 days to evaluate performance and bone mineralization; to assess the relative bioavailability of P (RBP) in wheat meal (WM) and roasted (RS) or extruded soybean meal (ES), with or without phytase (0 or 750 ftu/kg diet), using dicalcium phosphate (DC) as standard; and to estimate phosphorus excretion. Weight gain (WG), feed intake (FI), feed to gain ratio (FG), and tibia ash weigh (AW) were assessed. For each source, the RBP was calculated by the slope ratio method, when tibia ash weight was regressed on P ingested. Ingested and fecal P...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available phosphorus; Bone ash; Broiler; Phosphorus excretion; Phytate; Wheat meal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000300005

Strategies and facilities in order to improve animal welfare
Provedor de dados: 96
Autores: Moura,Daniella Jorge de; Bueno,Leda Globbo de Freitas; Lima,Karla Andrea Oliveira de; Carvalho,Thayla Morandi Ridolfi de; Maia,Ana Paula de Assis Maia.
To keep the position in being a world-wide exporter of chicken meat, Brazil must meet international quality standards, always seeking alternative resources of improvement, without increasing production costs, including litter quality, requirements of animal welfare and environment affairs, such as the use and reuse of broiler litter. Researches are performed in the areas of animal welfare, environment, animal behavior and use of modern climatization technology improving the quality of the environment created to raise broilers, also trying to reduce the greenhouse gas emissions and global warming in the environment, becoming a sustainable production system. This paper has a bibliographic revision of the subject mentioned above, intending to show a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Broiler litter; Electrical energy; Environment; Gas; Welfare.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300034

Effect of different sources of selenium on performance and characteristics of immune system of broiler chickens
Provedor de dados: 96
Autores: Shabani,Roozbeh; Fakhraei,Jafar; Yarahmadi,Hossein Mansoori; Seidavi,Alireza.
ABSTRACT An experiment was conducted based on a completely randomized design with 500 Ross 308 broiler chickens to investigate the effect of three different sources of selenium on performance and characteristics of immune system. Chickens were arranged in 10 treatments and five repetitions (10 chickens for each repetition). Ten treatments of experimental diet were considered in the study, including a basal diet (control); 0.5, 0.8, and 1.2 mg nano-selenium + basal diet (three treatments); 0.5, 0.8, 1.2 mg selenomethionine + basal diet; and 65, 80, and 100 mg vitamin E + selenium + basal diet. Findings suggested that adding selenomethionine (1.2 mg) to the basal diet resulted in a significant effect on feed conversion ratio and weight of broilers. In fact,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Immune response; Immunoglobin; Selenium.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100535

Sugarcane yeast inclusion for broilers at post-hatch
Provedor de dados: 96
Autores: Lopes,Cláudia da Costa; Rabello,Carlos Bôa-Viagem; Silva,Jaqueline de Cássia Ramos da; Arruda,Emmanuele Maria Florêncio de; Ludke,Maria do Carmo Mohaupt Marques; Dutra Junior,Wilson Moreira.
ABSTRACT A total of 450 one-day-old male broiler chicks were used to evaluate the effect of the sugarcane yeast on performance, body composition, and development of the intestinal mucosa. The experiment was carried out in a completely randomized design with five treatments and six replicates of 15 birds. Sugarcane yeast was included in the experimental diets at the levels of 0, 12.5, 25.0, 37.5, and 50.0 g kg−1. Body weight, weight gain, feed intake, and feed conversion were determined. At the end of the experiment, four broiler chicks were slaughtered per experimental unit: two were used for evaluation of moisture content, crude protein, fat, and body ash and the other two were used in the collection of small-intestine segments for evaluation of villus...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Body composition; Broiler; Intestinal morphology; Performance; Saccharomyces cerevisiae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200924

Reduction of toxic effects of aflatoxin B1 by using baker yeast (Saccharomyces cerevisiae) in growing broiler chicks diets
Provedor de dados: 96
Autores: Çelýk,Kemal; Denlý,Muzaffer; Savas,Türker.
This study was carried out to investigate the effects of adding baker yeast (BY), chlortetracycline (CTC) and both BY + CTC to a control diet containing 200 ng/g of aflatoxin B1 (C + AFB1) on performance, serum parameters and pathologyc alterations of broilers. A total 100 chicks (Ross PM 3) were divided into five groups in individual cages and each containing 20 animals. BY, a rich source of protein and vitamin B complex, was mixed into the diets at 2.0 %, CTC was mixed into the diet at 2.5 ng/g. Feed consumption, body weight and feed efficiency were recorded weekly. Serum parameters and pathologyc alterations were determined at the end of the study. Dead animals were recorded daily. Liver changes were clearly apparent in the C+AFB1and C+ AFB1+CTC most of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed; Aflatoxin B1; Baker yeast; Chlortetracycline; Broiler; Performance.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982003000300013

Broiler carcass condemnation pattern during processing
Provedor de dados: 96
Autores: Belintani,Rafael; Garcia,Rodrigo Garófallo; Nääs,Irenilza de Alencar; Borille,Rodrigo; Sgavioli,Sarah; Caldara,Fabiana Ribeiro; Lima,Nilsa Duarte da Silva.
ABSTRACT This study aimed to identify the influence of climate pattern and rearing conditions on broiler carcass condemnations observed during processing. We evaluated the registered data of 2015 from the federal inspection files in all broiler slaughterhouses located in the state of Mato Grosso do Sul, Midwestern Brazil. The percentages of condemnations by airsacculitis, cellulitis, dermatosis, ascites syndrome, total carcass condemnations, and average broiler weight at 42 days were analyzed. Data were associated with housing systems and season of the year in which each flock was reared. Two-way ANOVA was applied to the data in a completely randomized design 4×3 (four seasons and three houses) and compared by Tukey's test. The results indicated that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Meat; Production system; Slaughterhouse.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100103

Sarcoplasmatic and myofibrillar protein changes caused by acute heat stress in broiler chicken
Provedor de dados: 63
Autores: Santos,Carolina de Castro; Delgado,Eduardo Francisquine; Menten,José Fernando Machado; Pedreira,Aparecida Carla de Moura; Castillo,Carmen Josefina Contreras; Mourão,Gérson Barreto; Brossi,Camila; Silva,Iran José Oliveira da.
Acute heat stress (AHS) modifies the structure of myofibrils affecting functional properties of meat, mainly the water holding capacity. This experiment aimed to identify changes in proteolysis and migration between the myofibrillar and sarcoplasmatic fractions due to pre-slaughter AHS. Myofibrillar fragmentation index (MFI), SDS-PAGE, western blot of vinculin (WB) and shear force (SF) were determined. Six hundred broilers (Gallus gallus) were slaughtered in three different days (ST). In each ST, groups of ten animals were placed in transport crates and submitted to AHS (35ºC, 75 - 85% RH) for 2 hours. Simultaneously, the non-stressed broilers (NS) were kept in thermoneutral environment (22ºC, 83 ± 6.6% RH) within the crates in the same density. After...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Heat stress; Lightness; Fragmentation index; Shear force.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000500002

Strategic marker selection to detect quantitative trait loci in chicken
Provedor de dados: 63
Autores: Ruy,Deborah Clea; Nones,Kátia; Baron,Erica Elias; Ledur,Mônica Corrêa; Melo,Cláudio Manoel Rodrigues de; Ambo,Marcel; Campos,Raquel de Lello Rocha; Coutinho,Luiz Lehmann.
Selective genotyping for a certain trait in individuals with extreme phenotypes contributes sufficient information to determine linkage between molecular markers and quantitative trait loci (QTL). In this experiment an F2 population, developed by crossing males from a broiler line with females from a layer line, was employed to detect QTL on chromosomes 3 and 5. Twenty-eight performance and carcass traits were measured in F2 offspring, and phenotypic correlations between traits were calculated. Body weight at 42 days (BW42) presented the greatest positive correlations with most other traits, with correlation between body weights at 35 and 41 days, weight gain between birth and 35, 41 and 42 days, as well as weights of carcass and some body parts superior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: QTL; Broiler; Selective genotyping; Body weight.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000200003

ประสิทธิภาพของกรดอินทรีย์ต่อสมรรถนะการผลิต และคุณภาพซากในไก่เนื้อ
Provedor de dados: 106
Autores: Dungjai Jongtamklang; Nattanan Saenthaweesuk; Anut Chantiratikul; Jowaman Khajarern.
The effects of organic acid (double-coated calcium butyrate base supplement) on performance and carcass traits of broiler chickens were assessed in three groups (PC, NC1 and NC2). The organic acid was added in three phases of feeding (1-21d, 22-35d, 36-42d) in PC, NC1 (PC deduction 40 kcal ME/kg and both methionine and lysine 1.5%) and NC2 (PC deduction 60 kcal ME/kg and both methionine and lysine 2.2%). Organic acid was added in PC with three period dosages 750-500-500 ppm and in both NC1 and NC2 1000-750-750 ppm. Addition organic acid in three controls (PC, NC1, NC2) showed similar performance of body weight gain, survival rate, feed conversion ratio and productive index, except for early starter period (1-21d of age). Broilers fed with organic acid...
Tipo: Collection
Palavras-chave: Broiler; Performance; Carcass quality; Organic acid; ไก่เนื้อ; สมรรถนะการผลิต; คุณภาพซาก; กรดอินทรีย์; อัตราการเปลี่ยนอาหารเป็นน้ำหนัก; การให้อาหาร; การเสริมกรดอินทรีย์.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5954

ประสิทธิภาพของกรดอินทรีย์ต่อสมรรถนะการผลิต และคุณภาพซากในไก่เนื้อ
Provedor de dados: 106
Autores: Dungjai Jongtamklang; Nattanan Saenthaweesuk; Anut Chantiratikul; Jowaman Khajarern.
The effects of organic acid (double-coated calcium butyrate base supplement) on performance and carcass traits of broiler chickens were assessed in three groups (PC, NC1 and NC2). The organic acid was added in three phases of feeding (1-21d, 22-35d, 36-42d) in PC, NC1 (PC deduction 40 kcal ME/kg and both methionine and lysine 1.5%) and NC2 (PC deduction 60 kcal ME/kg and both methionine and lysine 2.2%). Organic acid was added in PC with three period dosages 750-500-500 ppm and in both NC1 and NC2 1000-750-750 ppm. Addition organic acid in three controls (PC, NC1, NC2) showed similar performance of body weight gain, survival rate, feed conversion ratio and productive index, except for early starter period (1-21d of age). Broilers fed with organic acid...
Tipo: Collection
Palavras-chave: Organic acid; Performance; Carcass quality; Broiler; กรดอินทรีย์; สมรรถนะการผลิต; คุณภาพซาก; ไก่เนื้อ.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5868

ความนุ่มของเนื้อไก่ประดู่หางดำเชียงใหม่ 1 ไก่ลูกผสมประดู่หางดำเชียงใหม่ 1 และไก่กระทง
Provedor de dados: 106
Autores: Ungkanaporn Pongduang; Amnuay Leotaragul; Aphirak Pianmongkol; Prodepran Thakeow; Sanchai Jaturasitha.
This experiment was conducted to investigate the effect of lines and muscle types on tenderness of Pradu Hang Dam Chiang Mai 1 (Pradu Hang Dam), Pradu Hang Dam’s crossbred (crossbred) and broiler at 1.2-1.3 kg of body weight. There were 80 chickens for each line group (total 240) and were allotted in CRD. For breast and thigh muscle, the results showed that thawing loss of Pradu Hang Dam and its crossbred were higher than broiler (P&lt;0.05). For thigh muscle, cooking loss of Pradu Hang Dam was the highest (P&lt;0.05). For shear force value, Pradu Hang Dam and its crossbred were higher than broiler both in breast and thigh muscle (P&lt;0.05). For collagen content analysis, the results showed that Pradu Hang Dam had the highest content of soluble collagen...
Tipo: PhysicalObject
Palavras-chave: Thawing loss; Cooking loss; Shear force value; Chicken; Lines; Muscle; Tenderness; Broiler; การสูญเสียน้ำจากการละลาย; การสูญเสียน้ำจากการประกอบอาหาร; ค่าแรงตัดผ่านของเนื้อ; ไก่ประดู่หางดำ; เนื้อสัตว์; เนื้อไก่.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5410

Effect of using the Matrix Values for NSP-degrading enzymes on performance, water intake, litter moisture and jejunal digesta viscosity of broilers fed barley-based diet
Provedor de dados: 2
Autores: Moftakharzadeh, Seyed Adel; Moravej, Hossein; Shivazad, Mahmud.
In this study, we have evaluated the effect of three multi-enzymes nutrient matrix values and compared the results with that fed barley and the corn diets without enzyme. In entire period, addition of all enzymes to the barley-based diet significantly (p &lt; 0.05) increased feed intake (FI) and the highest intake was for birds that fed enzyme A (p &lt; 0.05). Overall, from 0 to 42 days, average daily gain (ADG) was significantly (p &lt; 0.05) increased by enzyme and birds fed enzyme A had the highest body weight (p &lt; 0.05). Generally, from 0 to 42 d of age, feed conversion ratio (FCR) was significantly (p &lt; 0.05) improved when enzyme added to barley-based diet, but there were no significant differences among diets containing enzymes A and C and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal and poultry Science carbohydrase; Broiler; Performance; Nutrient matrix value.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/33070

Desempenho, digestibilidade, composição corporal e morfologia intestinal de pintos de corte recebendo dietas contendo levedura de cana-de-açúcar - doi: 10.4025/actascianimsci.v33i1.10787
Provedor de dados: 2
Autores: Lopes, Claudia da Costa; Universidade Federal Rural de Pernambuco; Rabello, Carlos Bôa-Viagem; Universidade Federal Rural de Pernambuco; Silva Júnior, Valdemiro Amaro da; Universidade Federal Rural de Pernambuco; Holanda, Mônica Calixto Ribeiro de; Universidade Federal Rural de Pernambuco; Arruda, Emmanuele Maria Florêncio de; Universidade Federal Rural de Pernambuco; Silva, Jaqueline de Cássia Ramos da; Universidade Federal Rural de Pernambuco.
Objetivou-se avaliar o desempenho, a digestibilidade das dietas, a retenção corporal de nutrientes e o desenvolvimento da mucosa intestinal de pintos de corte de 1 a 8 dias de idade, alimentados com dietas contendo níveis crescentes de levedura de cana-de-açúcar. Utilizou-se 300 pintos de corte, com um dia de idade, distribuídos em delineamento inteiramente casualizado, composto de cinco tratamentos e seis repetições de 10 aves. Os tratamentos consistiram de níveis crescentes de 0; 1,25; 2,5; 3,75 e 5,0% de inclusão de levedura. Não houve efeito da levedura sobre o desempenho zootécnico. Houve redução no coeficiente de metabolizabilidade da energia bruta, na energia metabolizável aparente e a aparente corrigida com os níveis crescentes. O nível de 2,09%...
Tipo: Pesquisa de campo; análise laboratorial
Palavras-chave: 5.04.00.00-2 avaliação nutricional; Frango de corte; Vilosidades intestinais; Retenção de nutrientes; Saccharomyces cerevisiae nutritional evaluation; Broiler; Intestinal villi; Nutrient retention; Saccharomyces cerevisiae.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10787

Energy efficiency improvement for broiler production using non-parametric techniques
Provedor de dados: 111
Autores: Ebrahimi, Sajjad; Mesri Gundoshmian, Tarahom; Abdi, Reza; Raei Jadidi, Mehri.
The goal of this study was to evaluate the sustainability and efficiency of broiler production with regard to energy consumption in Ardabil province, Iran. To reach the goal, linear programming model and Data Envelopment Analysis (DEA) were employed.  Data were collected from the farmers using a face–to–face questionnaire performed in September–December 2014 period.  The DEA application results showed that the average values of technical, pure technical and scale efficiency scores of producers were 0.949, 0.988 and 0.960, respectively.   Also, energy saving target ratio for broiler production was calculated as 8.33%, indicating that by following the recommendations resulted from this study, about 12316.85 MJ/(1000 bird) of total input energy could be saved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy efficiency; Data Envelopment Analysis; Linear programming; Technical efficiency; Broiler.
Ano: 2016
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3562

The Role of Information and Communication Technology in Poultry Broiler Production Process Control
Provedor de dados: 111
Autores: Jackman, Patrick; Penya, Hector; Ross, Robert.
Broiler production is arguably one of the most challenging food supply industries in the world due to the large number of animals that are reared on a given site, and the competitive nature of the sector. These factors taken together mean that every opportunity to optimise the production process must be considered to boost bird weight gain while at the same time reducing resource investment and risk of major incidents. As a result of this, the last decade has seen the introduction of Precision Livestock Farming techniques to the broiler production industry.In this paper we review the emergence and trends in Precision Livestock Farming in the broiler production industry by examining both in-market and laboratory based advances for this sector. The review...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry; Broiler; Automatic Control Systems; Machine Learning; Sensors; Predictive Modelling.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5319

The occurrence of Orthoreovirus, Rotavirus and chicken anemia virus in chickens of the poultry industry in Minas Gerais, Brazil
Provedor de dados: 45
Autores: Rios,R.L.; Marin,S.Y.; Gomes,A.M.; Resende,J.S.; Bonfim,M.R.Q.; Gomes,A.D.; Resende,F.M.S.; Horta,R.S.; Resende,M.; Martins,N.R.S.
Fifty-four fecal samples taken from broiler chickens from 1 to 45 days of age, and of pullets from 10 to 13 weeks of age, original from eight different poultry regions in the state of Minas Gerais, Brazil, were collected from March 2008 to January 2010 for avian Orthoreovirus (ARV) and avian Rotavirus (AvRV) analyses. For the assay of ARV, RNA was immediately extracted (Trizolâ) and transcribed into cDNA for assaying in a nested-PCR with ARV-specific primers. For AvRV, polyacrylamide gel electrophoresis (PAGE) was performed with RNA extracts obtained by phenol-chloroform extraction. CAV was additionally investigated through a nested-PCR of thymus and spleen. Results found 5.55% positive for ARV and 9.25% for AvRV. Also, CAV and ARV genomes were detected in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Layer; Chicken anemia virus; CAV; Avian reovirus; ARV; Avian rotavirus; AvRV; Nested-PCR; PAGE.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000600030

Effect of dietary fluorine from Araxá rock phosphate on the hepatic production of cyclic-adenosine monophosphate in broilers
Provedor de dados: 45
Autores: Rezende,M.J.M.; Veloso,J.A.F.; Turchetti-Maia,R.M.M.
The cyclic adenosine 3’, 5’-monophosphate (cAMP) production was evaluated in liver thin sections of broiler chicks fed on a experimental diet containing bicalcium phosphate or Araxá rock phosphate (ARP) as source of P, with a high content of fluorine, at different ages: from the first to the 42nd and from the 21st to the 42nd day of age. The intake of the ARP formulated diet starting from birth elicited an increase of cAMP production in broiler liver. However, when this diet was offered after the 21st day of age, the hepatic cAMP production in broilers was not significantly (P&gt;0.05) affected, suggesting that the effect of high fluorine present in Araxá rock phosphate, on hepatic cAMP of broiler chicks depends on the age in which the experimental diet is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluorine; Cyclic-adenosine monophosphate; Broiler.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09351999000500014

Isotopic traceability in body tissues and in different breeding periods of broilers
Provedor de dados: 45
Autores: Oliveira,R.P.; Ducatti,C.; Carrijo,A.S.; Pezzato,A.C.; Denadai,J.C.; Sartori,J.R.; Cruz,V.C.
The inclusion of poultry viscera meal (VM) in broiler diets to possibly replace it with strictly vegetable diet (VE) and vice-versa, using the technique of carbon and nitrogen stable isotopes in different tissues was traced. One hundred ninety-two one-day-old chicks that had been distributed randomly were used in twelve experimental treatments with four replications of four chicks each. The treatments consisted of vegetable diet (VG) for diets containing FV going after a certain age or the reverse, in which the birds began feeding VM on diet and then switched to VE diet. At 42 days of age, samples of pectoral muscle (Pectoralis major), keel and tibia were collected, with later determination of isotopic ratios (13C/12C and 15N/14N). The stable isotopes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Poultry viscera meal; Stable isotopes; Carbon-13; Nitrogen-15.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000500033

Effect of chick weight on performance and carcass yield of broilers
Provedor de dados: 45
Autores: Lara,L.J.C.; Baião,N.C.; Cançado,S.V.; Teixeira,J.L.; López,C.A.A.; Duarte,F.D.; Michalsky,V.B.
The influence of weight classes (light, medium and heavy) of Ross chicks on performance and carcass yield and main cuts, was studied using a completely randomized design with six replicates of 30 males and 30 females each. The chicks were fed on the same diets during the growing period (1-43 days). The live weight, feed intake, feed:weight gain ratio, viability, carcass yield and main cuts (breast, whole leg, wing and back) and percentages of giblets (gizzard, liver, heart and guts) were analyzed. The heavy weight class chicks were heavier (P&lt;0.05) than the light weight class chicks, during all the growing period and showed higher feed consumption (P&lt;0.05) than the light and medium classes chicks. No differences among weight classes chicks concerning...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Initial body weight; Performance; Yield.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600015

Antibodies specific to infectious bronchitis in broilers in Ceará state, Brazil
Provedor de dados: 45
Autores: Cardoso,W.M.; Gomes,L.P.; Romão,J.M.; Salles,R.P.R.; Teixeira,R.S.C.; Sobral,M.H.N.R.; Câmara,S.R.; Oliveira,W.F.
The experiment was carried out to determine the antibody levels to infectious bronchitis virus (IBV) in 1120 broilers of two broiler flocks, both from the same parental flock and free from previous vaccination. Forty chicks of each line were alloted to the control group and the sera were tested by indirect ELISA. The vaccination program consisted on the administration of commercial vaccines against IBV at 10 and 25 days of age. Chicks with low levels of maternal antibodies (Mab) did not show significant titers to the first vaccinal stimulus. They presented a vaccinal response to the second vaccinal stimulus reaching the top around GMT 1100 at 45 days. Chicks with high Mab titers did not show significant titers to the primary and secondary vaccinal stimuli,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Infections bronchitis; Antibody.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000300007

Coccidiosis and performance in broilers with anticoccidial medicated feed starting at different ages
Provedor de dados: 45
Autores: Costa,C.A.F.; Guidoni,A.L.; Paiva,D.P.; Ávila,V.S.
The effects of age, litter reutilization, and anticoccidial programs were studied in broilers. The oocyst counts increased with litter reutilization up to third use, and T1 (no anticoccidial drug over the entire 42-day-period) and T4 (anticoccidial medication starting from the first day) showed the highest counts. The scores for Eimeria acervulina increased up to third use of litter and declined by the fourth use. The scores for E. maxima increased from first to second litter use, and from this to third and fourth use. The scores for E. tenella increased from first and second litter use to third litter use, and declined on fourth use. With high coccidial contamination, as in third use litter, the anticoccidial medication starting from the 1st, 7th (T3) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Coccidiosis; Anticoccidial program; Performance.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352000000200010

Effect of mannanoligosaccharides and/or enzymes on antibody titers against infectious bursal and Newcastle disease viruses
Provedor de dados: 45
Autores: Oliveira,M.C.; Figueiredo-Lima,D.F.; Faria Filho,D.E.; Marques,R.H.; Moraes,V.M.B.
The effect of including mannanoligosaccharides (MOS) and/or enzymes in broiler diets on antibody titers against infectious bursal disease virus (IBDV) and Newcastle disease virus (NDV) was evaluated. A total of 750 broilers were distributed into a completely randomized experimental design in a factorial arrangement 2 x 2 + 1 with two levels of MOS (0 and 0.1% until 21 days and 0.05% from 22 to 42 days of age), two levels of enzymes (0 and 0.05%) and a positive control diet containing antibiotic, totaling five treatments with five replicates each. For antibody analyses, blood samples were weekly collected by jugular vein puncture in the same two birds per replicate. The first and last collections were done at 7 and 42 days of age, respectively. The...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Broiler; Additive; Humoral immune modulation; Prebiotic.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000100002

Manipulation of the fatty acids composition of poultry meat and giblets by dietary inclusion of two oil sources and conjugated linoleic acid
Provedor de dados: 45
Autores: Zanini,S.F.; Vicente,E.; Colnago,G.L.; Pessotti,B.M.S.; Silva,M.A.
The effect of dietary conjugated linoleic acid (CLA) in association with two vegetable oil sources on the fatty acids of meat and giblets of broiler chickens was evaluated. Two hundred 21-day-old broiler chickens were distributed in a completely randomized factorial design 2 x 5 (two oil sources, soybean or canola oil; and five levels of CLA, 0.0, 2.5, 5.0, 7.5, and 10.0g/kg). The addition of CLA to the diet resulted in an increase (P&lt;0.05) in CLA deposition in the analyzed tissues. CLA supplementation also reduced (P&lt;0.05) the rate of polyunsaturated to saturated fatty acids in thigh, breast, heart, and gizzard. There was interaction of CLA x oil source (P&lt;0.05). The intake of soybean oil, associated with increasing CLA, resulted in an increase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Conjugated linoleic acid; Canola oil; Soybean oil; Meat.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000600013

Effect of lipid sources of diets on broiler performance
Provedor de dados: 45
Autores: Lara,L.J.C.; Baião,N.C.; Aguilar,C.A.L.; Cançado,S.V.; Fiuza,M.A.; Ribeiro,B.R.C.
A completely randomized design with six replicates of 30 birds per experimental unit was used to evaluate the effect of five fat sources of diets (soybean oil, poultry fat, acidulated soybean oil soapstock and a mix of soybean oil plus poultry fat and soybean oil plus acidulated soybean oil soapstock) on the performance of male Ross broilers, during the growing period (1-45 days of age). The diets for each phase were isonutritional. Broilers fed on soybean oil showed higher weight gain in comparison to the birds fed on diets containing acidulated soybean oil soapstock (P&lt;0.05), but no differences were observed among the other treatments. The feed intake of birds fed on soybean oil was higher compared to the birds fed on acidulated soybean soapstock diet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Performance; Soybean oil; Acidulated soybean; Oil; Poultry fat oil.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600014

Performance and morphology of intestinal mucosa of broilers fed mannan-oligosaccharides and enzymes
Provedor de dados: 45
Autores: Oliveira,M.C.; Rodrigues,E.A.; Marques,R.H.; Gravena,R.A.; Guandolini,G.C.; Moraes,V.M.B.
The performance and the morphology of intestinal mucosa of broilers fed mannan-oligosaccharides (MOS) and enzymes (E) from one to 21-day-old were evaluated using 750 one-day-old chicks, assigned to a 2 x 2 + 1 factorial design - two levels of MOS (0 and 0.1%), two levels of E (0 and 0.05%) plus an antibiotic positive control diet - performing five treatments of five replications each one. MOS x E interaction was significant for both duodenal (P&lt;0.002 and P&lt;0.002) and ileal (P&lt;0.04 and P&lt;0.05) perimeters and heights of villi, being the values lower in the mucosa of birds fed non-supplemented diets. MOS based-diet determined an increase on perimeter of jejunal villi (P&lt;0.05). Compared with antibiotic treatment group, villi perimeter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Nutrition; Enzymes; Prebiotic.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000200025

Detection of Clostridium sp. and its Relation to Different Ages and Gastrointestinal Segments as Measured by Molecular Analysis of 16S rRNA Genes
Provedor de dados: 52
Autores: Mirhosseini,Seyed Ziaeddin; Seidavi,Alireza; Shivazad,Mahmoud; Chamani,Mohammad; Sadeghi,Ali Asghar; Pourseify,Reza.
The objective of this study was to establish a specific, sensitive and rapid PCR approach for the detection of Clostridium sp. at the genus level. Clostridium sp. in the duodenum, jejunum, ileum and cecum of broiler chickens were analyzed by 16S rRNA genes. The PCR detected the presence of Clostridium spp. in naturally contaminated intestinal samples. For the total gastrointestinal segments, 53.125, 65.625 and 59.375% samples were positive for naturally occurring Clostridium spp. at the ages 4, 14 and 30d, respectively. Analysis of the microbial contents indicated that Clostridium sp. was not consistently detected in all intestinal segments. These results can put in evidence the hypothesis that Clostridium spp. may be interfering in health and performance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clostridium spp.; Broiler; Gastrointestinal; Age; 16S rRNA genes.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100009

Campylobacter in broiler slaughter samples assessed by direct count on mCCDA and Campy-Cefex agar
Provedor de dados: 58
Autores: Gonsalves,Camila Cristina; Borsoi,Anderlise; Perdoncini,Gustavo; Rodrigues,Laura Beatriz; Nascimento,Vladimir Pinheiro do.
ABSTRACT Campylobacter spp. cause foodborne illnesses in humans primarily through the consumption of contaminated chicken. The aim of this study was to evaluate the United States Department of Agriculture's (USDA) recommended methodology, protocol MLG 41.02, for the isolation, identification and direct plate counting of Campylobacter jejuni and C. coli samples from the broiler slaughtering process. A plating method using both mCCDA and Campy-Cefex agars is recommended to recover Campylobacter cells. It is also possible to use this method in different matrices (cloacal swabs and water samples). Cloacal swabs, samples from pre-chiller and post-chiller carcasses and samples of pre-chiller, chiller and direct supply water were collected each week for four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter; Agar plate count; MCCDA; Campy-Cefex; Broiler.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300764

Performance comparison between broilers positive and negative for antibodies against the chicken anemia virus
Provedor de dados: 58
Autores: Rubin,Lauricio Librelotto; Ávila,Luiz Antônio Faccenda de; Ribeiro,Andréa Machado Leal; Wald,Vera; Canal,Cláudio Wageck.
The chicken anemia virus (CAV) is present in virtually every country investigated, Brazil including. The aim of this study was to determine what the difference in performance is between positive (progeny of breeders vaccinated or with natural infection) and negative broilers to the presence of antibodies against the CAV in currently intensive raising systems. As a result, it was observed that negative broilers were significantly heavier than positive broilers. Negative males had a final weight 5.43% higher than positive males. There was no significant difference among different treatments in relation to parameters as mortality and feeding conversion. These study indicated that the presence of antibodies against CAV in broilers - may it be through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chicken anemia virus; Performance; Broiler; Vaccine; Antibody.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500030

Behavior of Salmonella heidelberg and Salmonella enteritidis strains following broiler chick inoculation: evaluation of cecal morphometry, liver and cecum bacterial counts and fecal excretion patterns
Provedor de dados: 58
Autores: Borsoi,Anderlise; Santos,Luciana Ruschel do; Rodrigues,Laura Beatriz; Moraes,Hamilton Luiz de Souza; Salle,Carlos Tadeu Pippi; Nascimento,Vladimir Pinheiro do.
Over the years, Salmonella Heidelberg (SH) has gained prominence in North America poultry production and in the poultry production of other countries. Salmonella Heidelberg has been isolated and reported from poultry and poultry products in Brazil since 1962, whereas Salmonella Enteritidis (SE) has only emerged as a serious problem in poultry and public health since 1993. These strains of Salmonella can cause intestinal problems in newly hatched chicks, and infection may persist until adulthood. Upon slaughter of chickens, Salmonella can contaminate carcasses, a condition that poses a threat to human health. The aim of this study was to compare the fecal excretion of Salmonella Enteritidis and Salmonella Heidelberg in newly hatched chicks (orally...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella Heidelberg; Salmonella Enteritidis; Fecal Excretion; Villus/crypt ratio; Broiler.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100034

Prevalence of virulence genes in strains of Campylobacter jejuni isolated from human, bovine and broiler
Provedor de dados: 58
Autores: González-Hein,Gisela; Huaracán,Bernardo; García,Patricia; Figueroa,Guillermo.
Campylobacter jejuni isolates of different origins (bovine, broiler meat, human) were screened by polymerase chain reaction for the presence of 4 genes cdtB, cst-II, ggt, and virB11, previously linked to virulence such as adherence, invasion, colonization, molecular mimicry, and cytotoxin production. In addition, the isolates were screened for the presence of the global gene regulator csrA linked to oxidative stress responses, biofilms formation, and cell adhesion. All the C. jejuni isolates were positive for cdtB gene. The csrA gene was detected in 100% and 92% of C. jejuni isolates from human and animal origin and the virB11 gene was detected in 7.3% and 3.6% isolates from chicken and human respectively. All isolates from bovine were negative for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter jejuni; Virulence; Guillain Barré syndrome; Broiler; Bovine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400028

Sources and levels of selenium on breast meat quality of broilers
Provedor de dados: 65
Autores: Boiago,Marcel Manente; Borba,Hirasilva; Leonel,Fábio Roberto; Giampietro-Ganeco,Aline; Ferrari,Fábio Borba; Stefani,Lenita Moura; Souza,Pedro Alves de.
Qualitative characteristics of breast meat of broilers fed diets supplemented with different concentrations (0; 0.3 and 0.5mg kg-1) of selenium in the form of selenomethionine and sodium selenite were analyzed. A total of 1050 one-day-old male Cobb broiler chicks were arranged factorially at random to five treatments (two concentrations x two sources + control diet without addition of selenium) with 7 replications of thirty birds each and received an isonitrogenous and isocaloric diets in all phases according to their ages (1-21, 22-35, and 36-42 days). At 42 days of age, TBARS (thiobarbituric acid reactive substances) after storage at 4ºC for one, seven and 15 days and also after 30 days under freezing temperatures (-15°C), color (CIELab), water holding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Meat quality; Pectoralis major; Selenomethionine; Sodium selenite.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000901692

Causes of condemnation of carcasses from poultry in slaughterhouses located in State of Goiás, Brazil
Provedor de dados: 65
Autores: Santana,Ângela Patrícia; Murata,Luci Sayori; Freitas,Camila Guimarães de; Delphino,Marina Karina; Pimentel,Concepta Macmanus.
The aim of this research was to detect the principal reasons for condemnation of poultry carcasses in two slaughterhouses (A and B); located in the southeastern region of the State of Goiás, Brazil. The data were collected by the federal veterinary inspection services of the Brazilian Ministry of Agriculture between January and April 2007. The principal causes of condemnation observed in both industries were cellulite, contusion/ fractures and bruises, as well as contamination due to gut severance at evisceration. The three main values observed for each of the causes were different between the slaughter houses. In A, cellulite was the main cause of condemnation with 51.20% of all condemnations, followed by 5.67% for contusion/ fractures and bruising and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cellulite; Broiler; Fractures; Lesions; Quality and poultry meat.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000900028

Broiler adaptation to post-hatching period
Provedor de dados: 65
Autores: Maiorka,Alex; Dahlke,Fabiano; Morgulis,Maria Silvia Furquim de Azevedo.
In the latest years more attention has been given to mechanisms for bird adaptation at post-hatching period by management of environmental conditions and formulations of diets offered during this period when digestive, immune, and thermo-regulating systems suffer slight changes. In post-hatching period, digestive system is anatomically complete, but its functionality is still immature in relation to adult birds. The chick immunity depends on maternal antibodies transferred to egg just before laying. In addition, variations within thermal comfort zone might affect initial development of chick. For example, high temperatures may induce hyperthermia with dehydration, while low temperatures may lead to hypothermia responsible by pulmonary hypertension...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Digestive system; Immune system; Thermo-regulatory system.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782006000200057

Intestinal mucosa structure of broiler chickens infected experimentally with Eimeria tenella and treated with essential oil of oregano
Provedor de dados: 65
Autores: Silva,Maria Aparecida da; Pessotti,Bruna Mirelly de Sousa; Zanini,Surama Freitas; Colnago,Geraldo Luiz; Rodrigues,Maria Regina Alves; Nunes,Louisiane de Carvalho; Zanini,Marcos Santos; Martins,Isabella Vilhena Freire.
In the first trial a total of 250 day-old male chicks were distributed into five treatments and given the following diets: a diet with growth promoter; a diet without added growth promoter; a diet added with avilamycin only; diet supplemented with 0.5g of oregano oil kg diet-1; 1.0g of oregano oil kg diet-1. In other trial a total of 288 day-old chicks was used and distributed into four treatments, which were given the following diets: a diet with anticoccidial agent; a diet without anticoccidial agent; a diet supplemented with 0.5g of oregano oil kg diet-1; a 1.0g of oregano oil kg diet-1. In the first trial the nonmedicated group had the highest crypt depth which differs from chickens fed with growth promoter or with 0.5 and 1.0g of oregano oil kg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Origanum oil; Intestinal morphometric; Eimeria; Coccidiosis.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000500026