Potential degradability parameters of the dry matter and crude protein of six sorghum silage genotypes (Sorghum bicolor (L.) Moench), with or without tannin on grain, evaluated by in situ technique

Revista Brasileira de Zootecnia

Sousa, Breno Mourão de¹  Gonçalves, Lúcio Carlos¹  Borges, Iran¹  Molina, Lívio Ribeiro¹  Rodriguez, Norberto Mario¹ 

[1] Universidade Federal de Minas Gerais, Belo Horizonte

关键词: cattle;    degradability;    rumen;    sorghum silage;    tannin    Introdução Os problemas decorrentes da estacionalidade de produção no Brasil central podem ser minimizados pelo armazenamento do alimento na forma de silagem;   

DOI  :  10.1590/S1516-35982003000100028

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

The aim of this experiment was to evaluate the effect of tannin on grain over potential degradability parameters of the dry matter and crude protein of six sorghum silage genotypes by in situ technique. It was used four crossbred steers, canulated in rumen, fed ad libitum twice at day with a diet comprised by Cynodon dactylon hay. Six sorghum silage genotypes, harvested at milk stage, were incubated in the rumen: BR 303, BR 304, BR 601, and AG 2006 (without tannin on grain); BR 700, and BR 701 (with tannin on grain). Five grams of samples were incubated at times: 6, 12, 24, 48, 72, and 96 hours. The time zero (t0) was used to calculate the soluble fraction. Tannin decrease the extent of degradation of dry matter and crude protein of BR 700 and BR 701 sorghum silages. The potential degradabilities of these nutrients were reduced by tannin presence on grain. There was not effect of tannin on degradation rate of the nutrient compounds in anyone tested sorghum silage.

【 授权许可】

CC BY-NC