2006•Zhongguo xumu zazhiRequires access
Effect of Yeast Culture on Activities of Fiber Hydrolytic Enzymes and VFA in Goat Rumen
Tian Wang
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Abstract
Four goats with permanent rumen fistulae in 4×4 Latin square design were used to study the effect of yeast culture on activities of fiber hydrolytic enzymes and VFA in goat rumen contents. The results showed that yeast culture had a tendency to increase the degradation of NDF and ADF and activities of CMCase and Xylanase in rumen (P 0.05). Basal diet supplemented with yeast culture could increase rumen acetate, propionate, butyrate, TVFA concentration and acetate to propionate ratio. At 4 h after morning feeding, the acetate and TVFA concentration in 20 g/d yeast culture group were increased significantly by 22% (P 0.05) and 21% (P 0.05), respectively, compared with the control. However, the propionate concentration in 30 g/d yeast culture group was increased significantly by 11% (P 0.05) in 30 g/d yeast culture group. At 18h, the acetate and TVFA concentration in 30g/d yeast culture group were increased significantly by 32%(P 0.05) and 28%(P 0.05) respectively than those of the control group.