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BEAK TRIMMING BY INFRARED RADIATION OF LAYERS Rev. Bras. Ciênc. Avic.
Pelicia,K; Garcia,EA; Santos,TA; Santos,GC; Vieira Filho,JA; Silva,AP; Moreira,J; Rabello,CBV; Garcia,RG.
ABSTRACT This study aimed at evaluating beak-trimming methods and intensities on the performance, beak length and uniformity, and egg parameters of commercial layers. During the rearing period, birds were distributed in randomized blocks, with a 2x3 factorial design + two treatments, consisting of beak trimming with infrared (IR) radiation (moderate or severe); three IR intensities (low: 42 nm, intermediate: 46 nm, or high: 52 nm); and two control hot blade (HB) beak trimming treatments (moderate or severe) with eight treatments and five replicates of 21 chicks each, totaling 840 birds. During the growing phase (second experiment) the factorial design was modified to 2 x 3 x 2 + 4, comprising two IR beak-trimming intensities (moderate or severe); three IR...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative beak-trimming methods; Beak-trimming; Infrared radiation; Lohmann White layers.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100300
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Chicken meat quality as a function of fasting period and water spray Rev. Bras. Ciênc. Avic.
Komiyama,CM; Mendes,AA; Takahashi,SE; Moreira,J; Garcia,RG; Sanfelice,C; Borba,HS; Leonel,FR; Almeida Paz,ICL; Balog,A.
This study aimed at evaluating the effect of different fasting periods and water spray during lairage on the quality of chicken meat. A number of 300 male Ross broilers were reared up to 42 days of age, and submitted to four pre-slaughter fasting periods (4, 8, 12, and 16 hours) and sprayed with water or not during lairage. Deboned breast meat was submitted to the following analysis: pH, color, drip loss, water retention capacity, cooking loss, and shear force. There was a significant effect (p < 0.05) of fasting period on meat luminosity was significantly different, with the highest value obtained for 4-hour fasting, whereas no difference was found among the other fasting periods. Meat pH values were different among fasting periods when birds received...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broilers; Color; Meat; PH.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300008
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Comparison of techniques for tibial dyschondroplasia assessment in broiler chickens Rev. Bras. Ciênc. Avic.
Almeida Paz,ICL; Mendes,AA; Takita,TS; Vulcano,LC; Guerra,PC; Wechsler,FS; Garcia,RG; Takahashi,SE; Moreira,J; Pelícia,K; Komiyama,CM; Quinteiro,RR.
This study was carried out at Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, SP, Brazil, with the objective of evaluating the efficacy of four techniques in the assessment of tibial dyschondroplasia lesions in broiler chickens. Four hundred Cobb male chicks were reared from 1 to 39 days of age. At 39 days, forty birds were selected and tibial dyschondroplasia status was assessed by four different techniques: evaluation using the lixiscope, macroscopic examination, histological examination and bone mineral density assessment using optical radiographic densitometry. The efficacy of each technique to assess dyschondroplasia lesions in the tibial growth plate was determined in comparison to histology, which was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Histology; Lixiscope; Macroscopic lesions; Optical radiographic densitometry; Tibial dyschondroplasia.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100005
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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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Efeito da Duração do Período de Jejum Pré-Abate Sobre Rendimento de Carcaça e a Qualidade da Carne do Peito de Frangos de Corte Rev. Bras. Ciênc. Avic.
Denadai,JC; Mendes,AA; Garcia,RG; Almeida,ICL; Moreira,J; Takita,TS; Pavan,AC; Garcia,EA.
O objetivo de estudo foi o de avaliar o efeito do jejum de ração e água antes do abate sobre o rendimento de carcaça e cortes, perda de peso vivo, conteúdo do papo, intestino e moela, matéria seca das fezes, bem como volume globular médio e proteína total plasmática do soro. Foram utilizados 600 pintos machos da linhagem Ross, criados até 42 dias de idade, quando foram submetidos a três períodos de jejum (zero, quatro ou oito horas). A duração do período de jejum afetou (p<0,05) a perda de peso vivo, o rendimento de carcaça, carne de pernas, pés, conteúdo do papo e intestino. Aumentando-se o período de jejum até 4 horas, aumentou-se a perda de peso vivo e o rendimento de carcaça e patas, mas diminuiu-se o rendimento de pernas e o conteúdo do papo e do...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carcaça; Jejum; Maciez; Peito; PH.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000200002
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Efeito do Nível de Lisina da Dieta e do Sexo Sobre o Desempenho e Rendimento de Carcaça de Frangos de Corte Rev. Bras. Ciênc. Avic.
Almeida,ICL; Mendes,AA; Garcia,RG; Takita,TS; Moreira,J; Garcia,EA.
O experimento foi conduzido nas instalações da Faculdade de Medicina Veterinária e Zootecnia, UNESP, Campus de Botucatu, utilizando-se dois mil pintos de um dia de idade, da linhagem Ross, distribuídos em um delineamento inteiramente casualisado em esquema fatorial 2 x 2 (sexos x níveis de lisina) e criados até 49 dias de idade. As aves foram alimentadas com dietas: inicial (0-21 dias), crescimento (22-42 dias) e acabamento (43-49 dias), contendo 100% dos níveis de lisina recomendados pelo NRC (1994), ou 110% nas rações inicial e de crescimento e 120% na ração de acabamento. Os frangos foram abatidos aos 28, 35, 42 e 49 dias de idade quando os rendimentos de carcaça e de peito foram determinados. Os níveis de lisina não afetaram (p>0,05) o ganho de...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Desempenho; Frangos de corte; Lisina; Rendimento de carcaça.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2002000100002
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Evaluation of strain, dietary energy level and stocking density on broiler feathering Rev. Bras. Ciênc. Avic.
Moreira,J; Mendes,AA; Garcia,RG; Garcia,EA; Roça,RO; Nääs,IA; Dalanezi,JA; Pelícia,K.
This study evaluated the effects of strain, stocking density and dietary energy level on the feathering of broiler chickens. Four trials were carried out between September 2000 and April 2002. There were 10,685 broiler chicks from the strains Ross 308, Cobb 500, Hybro PG, Hubbard, MPK, and Isa Vedette. The bids were reared at stocking densities varying between 10 and 16 birds/m² and were given diets containing different metabolizable energy levels. Broiler feathering was evaluated either by atrributing scores from 1 to 10 to feather covering along the thigh and back (visual inspection), or by determining the percentage weight of the feathers at 28 and 42 days of age. Increasing rearing densities resulted in poorer feathering, mainly if 12 or 13 birds/m²...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler chickens; Dietary energy; Feathering; Strain; Stocking density.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000100002
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Probiotic and prebiotic utilization in diets for free-range broiler chickens Rev. Bras. Ciênc. Avic.
Pelícia,K; Mendes,AA; Saldanha,ESPB; Pizzolante,CC; Takahashi,SE; Garcia,RG; Moreira,J; Paz,ICLA; Quinteiro,RR; Komiyama,CM.
This work aimed to evaluate the effects of probiotic associated to prebiotic on performance, carcass and cut yields, qualitative traits of meat, development and score of lesions due to coccidiosis in digestive tract of broiler chickens raised in a free-range system during 85 days. One thousand, six hundred and ninety-six day-old male broiler chicks from naked-neck ISA S757-N Label Rouge line were used in a randomized block design with factorial scheme of 4x2 and four repetitions. The effect of four additive (1 - biologic promoter + coccidiosis vaccine; 2 - biologic promoter + anti-coccidiosis; 3 - chemical promoter + coccidiosis vaccine; 4 - chemical promoter + anti-coccidiosis) and two breeding systems from 35th day of age (one with no-access to pasture...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breeding system; Growth promoter; Intestine; Label Rouge; Symbiotic.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200005
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Protease Supplementation under Amino Acid Reduction in Diets Formulated with Different Nutritional Requirements for Broilers Rev. Bras. Ciênc. Avic.
Dessimoni,GV; Dalólio,FS; Moreira,J; Teixeira,LV; Bertechini,AG; Hermes,RG.
ABSTRACT This study aimed to evaluate the effect of different reductions in digestible amino acids content (lysine, methionine, and threonine), according to two nutritional requirements in corn, soybean meal, and meat and bone meal based diets, with protease supplementation, on performance parameters and carcass characteristics. A total of 1080 day-old chicks, male, Cobb 500, were allotted to a completely randomized design, in a factorial arrangement 3 x 2, three reductions in digestible amino acids content (lysine, methionine, and threonine) and two nutritional requirements (Rostagno et al. 2005 and Cobb-Vantress Guidelines 2008), and all diets were supplemented with protease (200 ppm) with 6 replicates of 30 birds per pen. There was no significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Performance; Nutritional recommendations; Monocomponent protease; Carcass characteristics; Poultry.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100305
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Protein, methionine+cystine and lysine levels for Japanese quails during the production phase Rev. Bras. Ciênc. Avic.
Garcia,EA; Mendes,AA; Pizzolante,CC; Saldanha,ESPB; Moreira,J; Mori,C; Pavan,AC.
An experiment was conducted at Faculdade de Medicina Veterinária e Zootecnia/Unesp - Botucatu for 168 days to evaluate the effects of protein, Met + Cys and lysine diet levels on egg production and egg quality of laying Japanese quails. Quails with 42 days of age were reared in a completely randomized design. There were 1,944 quails distributed in four replicates of 27 birds per pen, according to a factorial 3x3x2 with three crude protein levels (16, 18 and 20% CP), three Met + Cys levels (0.700; 0.875 and 1.050%) and two lysine levels (1.100 and 1.375%). Birds fed diets with 18 and 20% CP had higher feed intake and egg production than those fed diets with 16% CP. There was significant interaction (p<0.05) between protein and Met + Cys levels on egg...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg production; Egg quality; Lysine; Methionine+Cystine; Protein; Quails.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100002
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Use of prebiotics and probiotics of bacterial and yeast origin for free-range broiler chickens Rev. Bras. Ciênc. Avic.
Pelícia,K; Mendes,AA; Saldanha,ESPB; Pizzolante,CC; Takahashi,SE; Moreira,J; Garcia,RG; Quinteiro,RR; Paz,ICLA; Komiyama,CM.
This study aimed to evaluate the effects of probiotics and prebiotics of bacterial and yeast origin on the performance, development of the digestive system, carcass yield and meat quality of free-range broiler chickens. Five hundred and sixty male chicks of the strain ISA S757-N were reared from one to 84 days old. The birds were distributed in four treatments according to a completely randomized block design: T1 = Control, T2 = Probiotics and Prebiotics of bacterial origin, T3 = Probiotics and prebiotics of yeast origin, T4 = Probiotics and prebiotics of bacterial origin + probiotics and prebiotics of yeast origin. There were four repetitions with 35 birds per repetition, and the birds had access to a pasture area after 35 days of age. Characteristics...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Free-range broiler chickens; Digestive system; Probiotics; Symbiotics; Yeast.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000300006
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Variables impacting poultry meat quality from production to pre-slaughter: a review Rev. Bras. Ciênc. Avic.
Baracho,MS; Camargo,GA; Lima,AMC; Mentem,JF; Moura,DJ; Moreira,J; Nääs,IA.
Poultry meat quality has been widely studied, and has become a growing demand of the international market. Parameters that affect meat quality are complex, and occur throughout the production chain. The constant concern with meat quality by the exporting sectors is a response to consumers' demands, and is achieved by increasing efficiency, and investments in personnel training on quality. Understanding where critical points are in the poultry meat production chain, and investing in solving critical problems may lead to better control and management, and consequent reduction of losses. Production and management practices, from farm to processing plant, play an important role in meat quality, and the use of technologies to reduce risk factors throughout the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Meat hygiene; Meat quality; Pre-processing; Production chain.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400001
Registros recuperados: 12
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