Ruminal degradability of dry matter and crude protein of different by by-products fed to steers Degradabilidade ruminal da matéria seca e proteína bruta de diferentes subprodutos agroindustriais utilizados na alimentação de bovinos

The ruminal degradability of different byproducts was evaluated by the in situ technique. The feeds were incubated in the rumen of three crossbred E x Z steers averaging 300 kg for 72, 48, 24, 18, 12, 6, 3 e 0 hours. The potentially degradable fraction and effective degradability of DM and CP for th...

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Main Authors: Fábio Morotti, Leila Alves de Oliveira, Juliane Ribeiro, Sérgio Tosi Cardim, Gabriel Daltoé de Almeida, Rita de Cássia Menchon Tramontini, Rafael Henrique de Tonissi e Buschinelli de Goes, Kelly Cristina da Silva Brabes, Euclides Reuter de Oliveira
Format: Article
Language:English
Published: Universidade Federal da Bahia 2008-12-01
Series:Revista Brasileira de Saúde e Produção Animal
Online Access:http://revistas.ufba.br/index.php/rbspa/article/view/945
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Summary:The ruminal degradability of different byproducts was evaluated by the in situ technique. The feeds were incubated in the rumen of three crossbred E x Z steers averaging 300 kg for 72, 48, 24, 18, 12, 6, 3 e 0 hours. The potentially degradable fraction and effective degradability of DM and CP for the sunflower crushed were, respectively, 40.2 and 26.2% and 50.97 and 38.65%. The crushed soybean presented soluble fraction of 36.6 and 20.7%, for DM and CP, with an effective degradability of 72.5 and 69.9%, and the crushed grape, of 21.61 and 19.84% for DM and CP, with degradation rate of 4.2 and 7.67%/h, that resulted in effective degradabilities of 54.36 and 50.03 for DM and CP, respectively. For the protein, the cookie residue showed high soluble fraction (53.87%), the soybean hulls, high potentially degradable fraction (77.55%), and the wheat hulls, soluble fraction (63.23%).<br>Avaliou-se a degradabilidade ruminal de diferentes alimentos alternativos, utilizando-se a técnica in situ, em três novilhos mestiços ExZ, com peso médio de 300 kg. Os alimentos foram incubados por 72, 48, 24, 18, 12, 6, 3 e 0 horas. A fração potencialmente degradável e a degradabilidade efetiva da MS e PB para a torta de girassol foram, respectivamente, de 40,2 e 26,2% e 50,97 e 38,65%. A torta de soja apresentou fração solúvel de 36,6 e 20,7%, para MS e PB, com degradabilidade de 72,5 e 69,9%, e o bagaço de uva, de 21,61 e 19,84% para MS e PB, com taxa de degradação de 4,2 e 7,67%/h, o que acarretou degradabilidades de 54,36 e 50,03 para MS e PB, respectivamente. Para a proteína, o resíduo de bolacharia apresentou alta fração solúvel (53,87%); a casca de soja, alta fração potencialmente degradável (77,55) e a casca de trigo, fração solúvel (63,23%).
ISSN:1519-9940