Effect of yeast culture or cellulolytic enzymes in licking blocks on rumen fermentation and fibre degradation in vitro
An in vitro gas production experiment was conducted to determine the effect of yeast culture (YC) and cellulolytic enzyme (CE) included in urea-molasses-mineral (UMM) licking blocks on ruminal fermentation characteristics and fibre degradation of wheat straw. Five treatment blocks were: 1. control (CON, no UMM block added), 2. typical block (B), 3. yeast culture block (YCB), 4. cellulolytic enzyme block (CEB) and 5. yeast culture plus cellulolytic enzyme block (YCCEB). The results showed that gas production and both dry matter and cell wall degradabilities were significantly enhanced by supplemental UMM licking blocks (P＜0.01), of which the greatest gas production and the fibre degradabilities were found with the treatment YCB, followed by YCCEB, CEB, and B. It is concluded that yeast culture, cellulolytic enzymes or their combination included in licking blocks has a potential to boost rumen fermentation and fibre degradation.
UMM licking block ruminal fermentation gas production degradation in vitro
M.Y.Can L.Wang Q.X.Meng L.P.Ren Z.M.Zhou
State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University Beijing 100094, PR.China
国际会议
The 7tb International Symposium on the Nutrition of Herbivores(ISNH-7)(第七届国际草食动物营养研讨会)
北京
英文
994-999
2007-09-16（万方平台首次上网日期，不代表论文的发表时间）