efeito da suplementação nas características de carcaça e dos componentes não-carcaça de caprinos f1 boer × srd terminados em pastagem nativa effect of supplemental feeding on carcass and non-carcass characteristics of f1 (boer × srd) goats finished on native pasture

Clicks: 311
ID: 207429
2009
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Abstract
Objetivou-se avaliar o efeito da suplementação nas características de carcaça de cabritos F1 Boer × SRD terminados em pastagem nativa. Foram utilizados 24 caprinos F1 Boer × SRD, não-castrados, com 120 dias de idade e com peso vivo inicial de 15,52 kg. Os animais foram identificados, vermifugados e distribuídos de forma aleatória em quatro níveis de suplementação (0,0; 0,5; 1,0 e 1,5%), perfazendo seis repetições por tratamento. O manejo alimentar consistiu de pastejo com lotação contínua das 7h30 às 16 h, quando os animais foram recolhidos às baias para suplementação em gaiolas individuais equipadas com cochos e bebedouros. O trato gastrintestinal (TGI) foi pesado cheio e vazio, assim como a bexiga e a vesícula biliar, para obtenção do peso de corpo vazio (PCV). O rendimento dos órgãos e das vísceras apresentou tendência diferente à observada para peso absoluto, exceto para rendimento das patas, que apresentou comportamento linear decrescente. Os pesos e os rendimentos da carcaça quente e fria, bem como o peso do corpo vazio e o rendimento biológico, apresentaram resposta positiva aos níveis de suplementação. Na análise da participação dos cortes comerciais na carcaça, apenas o rendimento do pescoço aumentou de forma linear com o aumento dos níveis de suplementação. Os pesos do trato gastrintestinal cheio e do conteúdo gastrintestinal não responderam aos níveis de suplementação. O peso do conteúdo gastrintestinal foi determinante para o efeito da suplementação no peso do trato gastrintestinal cheio. O peso de todos os cortes comerciais respondeu de forma positiva à suplementação.
The objective of this study was to evaluate the effect of supplementation on the carcass characteristics of crossbred Boer goats finished on native pasture. Twenty-four Boer crossbreed goats were used, 120 days old and with an initial 15.52 kg BW. The supplemental feeding was randomly assigned to the animals according to a completely randomized design with 4 supplementation levels (0.0, 0.5, 1.0 and 1.5%) and six replications (goats). The animals had access to the pasture from 7:30 a.m. until 4 p.m. throughout the experimental period and were taken to stalls to receive supplemental feeding in individual cages equipped with hods and a water. Full and empty digestive tract (DT) were weighed, as well as the bladder and gall bladder to obtain the empty body weight (EBW). The visceras yield tended to be different from that observed for absolute weight, except for hoof yield that presented a decreasing linear behavior. The hot and cold carcass weights and the yields and the empty body weight and the biological yield presented positively response to the supplementation levels. Regarding the participation of wholesale cuts in the carcass, only the neck yield presented linear effect in response to the increase in supplementation levels. Full digestive tract and digestive content weights did not respond to the supplementation levels. The digestive content weight was decisive for the effect of supplemental feeding in the full digestive tract weight. Wholesale cuts weight responded positively to the supplementation levels.
Reference Key
jnior2009revistaefeito Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Aloísio Monteiro de Carvalho Júnior;José Morais Pereira Filho;Rayana de Medeiros Silva;Marcílio Fontes Cezar;Aderbal Marcos de Azevêdo Silva;Anderson Luiz Nascimento da Silva
Journal european journal of lipid science and technology
Year 2009
DOI
10.1590/S1516-35982009000700020
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000700020
Keywords
forage shoulder abate agriculturebiology (general) slaughteranimal culture

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