degradabilidade in situ da matÉria seca, da proteÍna bruta e da fraÇÃo fibrosa de concentrados e subprodutos agroindustriais in situ degradability of dry matter, crude protein and fibrous fraction of concentrate and agroindustrial by-products

Clicks: 220
ID: 128571
2009
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Abstract
Objetivou-se avaliar a degradabilidade ruminal da matéria seca (MS), da proteína bruta (PB), da fibra em detergente neutro (FDN) e da fibra em detergente ácido (FDA) do milho (Zea mays), do farelo de soja (Glicyne max L.), da torta de dendê (Elaeis guineensis Jacq.) e do farelo de cacau (Theobroma cacao L.). Incubaram-se amostras de cada alimento no rúmen de três novilhos por períodos de 0; 3; 6; 12; 24 e 48 horas. As degradabilidades efetivas da MS, PB, FDN e FDA, para a taxa de passagem de 5%/hora, foram relativamente baixas (abaixo de 60%), exceto para a PB do farelo de soja (acima de 65%). O farelo de soja apresentou os maiores coeficientes de degradação, tanto para MS e PB como também para os constituintes da parede celular, seguido do milho, torta de dendê e farelo de cacau. O farelo de cacau apresentou as menores taxas de degradação ruminal.<br /><br />PALAVRAS-CHAVES: Farelo de cacau, incubação ruminal, torta de dendê. The objective of the experiment was to evaluate the dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF) ruminal degradability of corn (Zea mays), soybean meal (Glicyne max L.), palm kernel cake (Elaeis guineensis Jacq.) and cocoa meal (Theobroma cacao L.). Samples of each feed were incubated in rumens of three steers for periods of 0; 3; 6; 12; 24 and 48 hours. The DM, CP, NDF and ADF effective degradabilities, for a passage rate of 5%/hour, were relatively low (lower than 60%), except for soybean meal CP (higher than 65%). Soybean meal showed the greatest degradation coefficients for DM and CP as so as for cellular wall constituents, followed by corn, palm kernel cake and cocoa meal. Cocoa meal showed the lowest ruminal degradation rates.<br /><br />KEY WORDS: Cocoa meal, incubation ruminal, palm kernel cake.
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Authors ;Gleidson Giordano Pinto de Carvalho Carvalho;Aureliano José Vieira Pires;Rasmo Garcia;Cristina Mattos Veloso;Robério Rodrigues Silva;Fabrício Barcelar Lima Mendes;Alyson Andrade Pinheiro;Danilo Ribeiro de Souza
Journal proceedings of the winter simulation conference winter simulation conference
Year 2009
DOI
DOI not found
URL
http://www.revistas.ufg.br/index.php/vet/article/view/7605
Keywords Keywords not found

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