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Analysis of Barriers to Brazilian Chicken Meat Imports Rev. Bras. Ciênc. Avic.
Aranda,MA; Sgavioli,S; Domingues,CHF; Santos,ET; Nääs,IA; Moura,JB; Garcia,RG.
ABSTRACT Trade liberalization during the last decades has increased among nations as a result of decreased tariffs. However, during the same period, market agents have created new protection measures to replace such mechanisms in an attempt to promote the domestic economic stability of countries, while expanding and ensuring the trade between nations. Considering that Brazil is the second largest broiler producer and chicken-meat exporter worldwide, the present study proposed to analyze the main barriers imposed on Brazilian chicken meat imports by the ten major importing countries. This is a documentary research with primary and secondary data, of a descriptive-exploratory nature, under a qualitative approach. Semi-structured questionnaires including...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Poultry production; International trade; Exports; Protectionism.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200312
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Animal welfare concepts and strategy for poultry production: a review Rev. Bras. Ciênc. Avic.
Moura,DJ; Nääs,IA; Pereira,DF; Silva,RBTR; Camargo,GA.
Well being of animals had been historically a public concern, since the beginning of human kind history. As world's population grows there is a need for food including meat. In the last decades there has been a great improvement in poultry production based on the careful control of several aspects, among which nutrition and management (environment, health and rearing systems). Nowadays, the search for good welfare conditions is a global tendency in animal production; however issues surrounding farm animal welfare or well-being, such as definitions, measurements, interpretation, and perception, continue to be controversial. It is known that the result of a broiler not adequately housed is a direct loss in production which leads towards a thought that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bird welfare; Housing; Behavioral pattern; Welfare assessment.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300001
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Assessment of broiler surface temperature variation when exposed to different air temperatures Rev. Bras. Ciênc. Avic.
Nascimento,GR; Nääs,IA; Pereira,DF; Baracho,MS; Garcia,R.
This study was conducted to determine the effect of the air temperature variation on the mean surface temperature (MST) of 7- to 35-day-old broiler chickens using infrared thermometry to estimate MST, and to study surface temperature variation of the wings, head, legs, back and comb as affected by air temperature and broiler age. One hundred Cobb® broilers were used in the experiment. Starting on day 7, 10 birds were weekly selected at random, housed in an environmental chamber and reared under three distinct temperatures (18, 25 and 32 ºC) to record their thermal profile using an infrared thermal camera. The recorded images were processed to estimate MST by selecting the whole area of the bird within the picture and comparing it with the values obtained...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Image analysis; Poultry; Thermal comfort.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400007
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Black bone syndrome in chiken meat Rev. Bras. Ciênc. Avic.
Baldo,GAA; Almeida Paz,ICL; Alves,MCF; Nääs,IA; Garcia,RG; Caldara,FR; Gavilan,CWS.
Black bone syndrome (BBS) affects poultry industry, and it is caused by the darkening of the tissue adjacent to the bone due to leak age of bone marrow contents during cooking. The objective of this experiment was to estimate BBS incidence in chicken thighs. A completely randomized experimental design, with two treatments (refrigerated or frozen) of 50 replicates each, was applied. The influence of BBS on meat quality was assessed according to bone lightness (*L), and meat appearance and sensorial characteristics. Lightness was measured using a colorimeter (Minolta® 410R) positioned on the proximal epiphyseal growth plate. Meat quality was evaluated after roasting by assigning scores for appearance (acceptable = no darkening, intermediate = little...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone darkening; Commercial processing plant; Meat quality.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400005
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BONE CHARACTERISTICS OF BROILERS SUPPLEMENTED WITH VITAMIN D Rev. Bras. Ciênc. Avic.
Colet,S; Garcia,RG; Almeida Paz,ICL; Caldara,FR; Borille,R; Royer,AFB; Nääs,IA; Sgavioli,S.
ABSTRACTVitamin D is added to broiler diets to supply its physiological requirement for bone formation. The fast growth rate of modern broilers is often associated with poor bone formation. Increasing vitamin D supplementation levels and the use of more available sources have applied to try to prevent leg problems, to increase carcass yield, and to improve the performance of broilers. The present study evaluated three vitamin D supplementation levels (1) 3,500 IU (control); (2) control + 1,954 IU of 25-hydroxycholecalciferol; and (3) control + 3,500 IU of vitamin D in broiler diets supplied up to 21 days of age. The objective was to investigate if the vitamin D levels above the recommendations could reduce leg problems in broilers. In this experiment, a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gait score; Tibial dyschondroplasia; Valgus; Varus; Pododermatitis..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300325
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Brazilian chicken meat production chain:a 10-year overview Rev. Bras. Ciênc. Avic.
Nääs,IA; Mollo Neto,M; Canuto,SA; Waker,R; Oliveira,DRMS; Vendrametto,O.
Brazil is the world's largest broiler meat exporter. Health control, knowledge and technology, as well as the natural aspects of the country are pointed out as the keys for the success of that product in the market. Brazilian broiler production grew significantly in the last decade; it creates jobs and has a significant social role in Brazilian economy. This study aimed at evaluating the Brazilian broiler meat supply chain from 2000 to 2010 using the social network analysis (SNA). Data from governmental and private sources were organized and analyzed. The focus of this study was the broiler production supply chain segment involving the hatchery, the broiler farm, the feed mill, the processing plant, and the government. The inputs considered were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Meat market; Broiler meat supply chain; Social network analysis.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100087
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Broiler breeder behavior and egg production as function of environmental temperature Rev. Bras. Ciênc. Avic.
Pereira,DF; Nääs,IA; Romanini,CEB; Salgado,DD; Pereira,GOT.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler breeder; Heat stress; Behavioral pattern.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000100002
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Broiler Pre-Slaughter Water Diet with Grass Lemongrass (Cymbopogon Citratus Stapf) Rev. Bras. Ciênc. Avic.
Garcia,RG; Royer,AF; Nääs,IA; Borille,R; Santana,M; Caldara,FR.
ABSTRACT The pre-slaughter management is one of the predisposing factors to the reduction in the quality of the carcass and broiler meat, mainly for being a stressful condition. This study evaluates the inclusion of lemongrass (Cymbopogon citratus Stapf) in the water used in the diet of pre-slaughter broilers for the first time. The carcass and meat quality parameters were evaluated. The experiment was carried out in the poultry production of an experimental sector of the Federal University of Grande Dourados - UFGD. A total of 2,594 broilers were distributed in an entirely randomized design in a factorial arrangement of 3x2x2, with three different lemongrass concentrations in the form of infusion (0. 1 and 5 g/L), two sexes and two genetic strains (Ross...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Meat; Welfare; Phytotherapy; Pre-slaughter; Meat quality.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000400725
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Broiler Surface Temperature and Behavioral Response under Two Different Light Sources Rev. Bras. Ciênc. Avic.
Araújo,FE; Garcia,RG; Nääs,IA; Lima,NDS; Silva,RBTR; Caldara,FR.
Light is an important environmental variable for the regulation and control of broiler behavior. Some light sources may also add heat to the rearing environment, and indirectly affect the heat exchange between the birds and the environment. This study aimed at investigation the surface temperature and behavioral response of broilers reared in an environment with monochromatic light emitted diode (LED). Broilers were reared inside commercial dark houses under two treatments: fluorescent or LED light sources. Bird surface temperature and behavior was monitoredfrom the first day of grow-out. The houses were virtually divided in four quadrants, and the variables were monitored in the geometric center of each quadrant. Surface temperature results were mapped,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Monochromatic light; LED; Welfare; Broiler activity.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200219
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Broiler walking ability and toe asymmetry under harsh rearing conditions Rev. Bras. Ciênc. Avic.
Baracho,MS; Nääs,IA; Bueno,LGF; Nascimento,GR; Moura,DJ.
Morphological asymmetry has been described as a potential broiler welfare indicator, for interpreting the birds' ability to cope with the challenges that may affect its growth. The objective of this study was to evaluate the use of morphological asymmetry data to estimate broiler walking ability and welfare.dBroilers werefed diets supplemented or not with vitamin D. Toes were measured when birds were 42 and 49 days old using digital caliper.the left and right sides of the following four bilateral traits (tarsometatarsus length, outer toe length, mid toe length, and back toe length) were measured twice on intact alive birds by two different researcherh. Data from right and left sides were compared in the two treatments using the Student t-test, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asymmetry; Welfare; Poultry.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300009
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Characterization of heat waves affecting mortality rates of broilers between 29 days and market age Rev. Bras. Ciênc. Avic.
Vale,MM; Moura,DJ; Nääs,IA; Pereira,DF.
Climate may affect broiler production, especially where there are heat waves, which may cause high mortality rates due to the heat stress. Heat wave prediction and characterization may allow early mitigation actions to be taken. Data Mining is one of the tools used for such a characterization, particularly when a large number of variables is involved. The objective of this study was to classify heat waves that promote broiler chicken mortality in poultry houses equipped with minimal environmental control. A single day of heat, a heat-shock day, is capable of producing high broiler mortality. In poultry houses equipped with fans and evaporative cooling, the characterization of heat waves affecting broiler mortality between 29 days of age and market age...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heat shock day; Heat wave; Mortality; Productivity losses.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000400010
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Diagnosis and evaluation of fungi presence in the air of two different ventilation sytems for broiler houses Rev. Bras. Ciênc. Avic.
Gigli,ACS; Baracho,MS; Nääs,IA; Silva,RA; Zago,R; Dall'Anese,FP.
Intensive broiler production in tropical climates requires adequate air circulation to control heat stress. Excess of air speed may lead to dust production and reduction of air quality and, consequently, production parameters. Brazilian regulations prohibit the presence of pathogens that may deteriorate air quality, and the presence of fungi in the air inside the poultry houses is limited to 750CFU/m³. The aim of this study was to evaluate the presence of fungi in two distinct types of broiler houses. The research compared two types of air ventilation: conventional (G1) and positive tunnel ventilation (G2). The fungi were collected using a dust sampling pump, with the air flow calibrated to 1.5 L/min. The filter impregnated with dust was submitted to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Environment; Fungi; Poultry housing.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400002
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Do broilers prefer to eat from a certain type of feeder? Rev. Bras. Ciênc. Avic.
Neves,DP; Nääs,IA; Vercellino,R do A; Moura,DJ de.
This study compared three types of feeders for broilers: Fênix, Tube and Automatic feeders. Bird's feeding behavior and preference were considered in this the evaluation. Preference was assessed by examining birds' behavioral activities, such as eating, standing and lying around the equipments, and meal duration as function of the environmental variables. Data on the behavioral activities and meal size were collected in a broiler commercial farm using a portable video camera, and the direct footages were analyzed. The time spent in each activity, feeding bout duration and time spent near the trough were statistically analyzed using the test of means and medians. Pearson's correlation test was used to evaluate the relationship between ambient environmental...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Activity; Broiler behavior; Feeder efficiency; Feeding strategic.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300007
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Efeito da Densidade de Criação e do Sexo Sobre o Empenamento, Incidência de Lesões na Carcaça e Qualidade da Carne de Peito de Frangos de Corte Rev. Bras. Ciênc. Avic.
Garcia,RG; Mendes,AA; Garcia,EA; Nääs,IA; Moreira,J; Almeida,ICL; Takita,TS.
O experimento foi conduzido nas instalações experimentais da Faculdade de Medicina Veterinária e Zootecnia - UNESP, Campus de Botucatu, SP, Brasil, com o objetivo de avaliar o efeito da densidade de criação e do sexo sobre o empenamento, incidência de lesões na carcaça e a qualidade de carne de peito de frangos de corte. Foram utilizados 1950 pintos de corte sexados, da linhagem Ross, distribuídos em um delineamento inteiramente casualizado, com esquema fatorial com 3 densidades (10, 13 e 16 aves/m²) e dois sexos com 5 repetições, sendo que uma foi destinada exclusivamente para reserva, criados até os 42 dias de idade. Aos 28, 35 e 42 dias foram amostradas 3 aves por repetição para a determinação do empenamento através da porcentagem de penas e 10 aves...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Densidade; Empenamento; Frangos de corte; Lesões na carcaça; Qualidade de peito.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100004
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Effect of Embryo Thermal Stimulation on the Serum Levels of Immunoglobulins and Corticosterone, and Organ Histopathology of 1 day-old Broilers Rev. Bras. Ciênc. Avic.
Flores,F; Nääs,IA; Garcia,RG; Quinteiro,WMQ; Souza,LI.
ABSTRACT Embryo thermal stimulation has been studied as a means to promote epigenetic changes and to improve broiler health and performance. This study aimed at evaluating immunoglobulin (IgM, IgG, and IgA) titers, serum corticosterone levels, and organ integrity of day-old male Cobb(r) and Ross(r) broilers. Embryos were submitted to hot and cold stimuli (thermal stimulation) on days 14-18 of incubation. The thermal manipulation treatments did not affect immunoglobulin titers of 1 day-old Cobb(r) or Ross(r) chicks, and caused severe bursal lesions (scores 3 and 4) in both strains. However, serum corticosterone levels of Cobb(r) chicks were higher when embryos were submitted to hot stimulus (+1.39ºC) compared with cold stimulus (+36 ºC). Serum...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Corticosterone; Caloric stress; Immunoglobulins; Termmanipulation.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600071
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Effect of High Incubation Temperature on the Blood Parameters of Layer Chicks Rev. Bras. Ciênc. Avic.
Sgavioli,S; Santos,ET; Domingues,CHF; Quadros,TCO; Castiblanco,DMC; Andrade-Garcia,GM; Amoroso,L; Nääs,IA; Garcia,RG; Baraldi-Artoni,SM.
ABSTRACT Adequate environmental temperature control is essential for incubation efficiency. Layer breeder eggs (n=360) were weighed and distributed in a completely randomized experimental design with two treatments, consisting of two incubation temperatures (T1=37.5 °C, control; and T2=39.0 °C, hot), with two incubators per temperature, and 90 eggs per incubator, totaling 360 eggs. Hatchability, embryo mortality, and chick cloacal and body surface temperatures were not affected by incubation temperature. Eggs incubated at the hot temperature presented greater egg mass loss and higher eggshell conductance than those incubated at the control temperature. Layer chicks derived from eggs incubated at control temperature showed greater absolute weight, yolk-free...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Body weight; Cloacal temperature; Conductance; Hatchability; Loss of mass.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600041
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Effect of Led Lighting Colors for Laying Japanese Quails Rev. Bras. Ciênc. Avic.
Nunes,KC; Garcia,RG; Nääs,IA; Eyng,C; Caldara,FR; Sgavioli,S; Roriz,BC; Ayala,CM.
ABSTRACT Time of exposure and light intensity rearing house may affect the performance and egg quality of laying quails. This research aimed at evaluating the live performance, egg quality, biometry of the reproductive system, and the gastrointestinal tract of Japanese quails (Coturnix coturnix japonica) exposed to artificial light-emitting diodes (LED) of different colors in comparison with fluorescent lamps. A total of 240 Japanese quails were distributed in completely randomized experimental design with four treatments (fluorescent lamp, and green, red, or blue LED lamps) with six replicates of 10 birds each. Average egg weight and eggshell thickness were different (p<0.05) when LED bulbs were compared with fluorescent lamps. The egg weight of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix coturnix japonica; Light-emitting diode; Fluorescent light bulb; Egg quality.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500051
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Effect of the litter material on drinking water quality in broiler production Rev. Bras. Ciênc. Avic.
Garcia,RG; Almeida,Paz ICL; Caldara,FR; Nääs,IA; Pereira,DF; Freitas,LW; Schwingel,AW; Lima,NDS; Graciano,JD.
Considering the importance of drinking water and its effect on broiler performance, drinking water quality was studied using six different litter materials. The presence of coliform bacteria and Escherichia coli was investigated. The following litter materials were used in the trial: wood shavings, rice husks, chopped Napier grass (Pennisetum pupureum), 50% sugarcane bagasse (Saccharum L.) + 50% wood shavings, 50% sugarcane bagasse (Saccharum L.) + 50% rice husks, and plain sugarcane bagasse (Saccharum L.). A number of 1620 Ross® one-day-old chicks were reared in 54 pens measuring 4.5 m² each, equipped with a bell drinker and a tube feeder. Water samples were collected in sterile tubes on days 28 and 42 of the rearing period, and submitted to the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler health; Contamination; Welfare.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300005
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Effects of labor motivation in poultry production Rev. Bras. Ciênc. Avic.
Alencar,M do CB de; Nääs,IA; Gontijo,LA; Salgado,DA.
Broiler production is a significant economic activity in Brazil, and employs a large number of stockpeople in the integration process. Considering that the stockperson's perception may lead to better performance of his/her tasks and flock handling, this study aimed at verifying possible interactions between poultry productivity and stockperson's perception, emotions, and motivation. The study methodology considered two aspects: qualitative analysis, using Ergonomic Work Analysis, with observational method, and by applying a questionnaire and interview, and classification of the answers into positive relationship and "affection" to the job or negative relationship and "disaffection" to the job; and quantitative analysis, applying the Test of Hypothesis for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ergonomics; Labor motivation; Poultry production.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2007000400007
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Equilibrium Condition during Locomotion and Gait in Broiler Chickens Rev. Bras. Ciênc. Avic.
Alves,MCF; Almeida Paz,ICL; Nääs,IA; Garcia,RG; Caldara,FR; Baldo,GAA; Nascimento,GR; Amadori,MS; Felix,GA; Garcia,EA; Molino,AR.
ABSTRACT The experiment was carried out with the objective of evaluating a methodology to estimate the angulation and equilibrium condition, relating them to gait score and the main diseases of the locomotion system in males and females of commercial broiler strains. A completely randomized experimental design in a factorial arrangement (2x2) was applied, consisting of two sexes and two genetic strains, with five replicates of 53 chickens each. The following characteristics related to broiler locomotion were studied: gait score (GS); incidence of Valgus (VAL) and Varus (VAR) deformities and of pododermatitis (POD); body angle relative the ground (ANG); equilibrium condition (EC); body weight (BW) and breast weight (BrW); and incidence of femoral...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Angulation; Bone pathologies; Broiler production; Locomotion problems; Posture; Welfare.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300419
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