稻草加酶青贮饲喂育成牛的效果研究

Effect of feeding enzyme -treated rice straw on growing performance of growing dairy cows

本研究以新鲜晚稻草为原料，探讨了添加Ｓｔｒａｗｚｙｍｅ酶制剂对青贮晚稻草发酵品质和育成牛生产性能的影响。试验设３个处理，试验１组每吨稻草（ＤＭ）加酶８００克和麸皮５０千克；试验２组每吨稻草加酶８００克；对照组只加水调制。各处理青贮料感官评定均属于良好青贮料。试验１组的青贮料采食量和育成牛的日增重均显著高于对照组（ｐ＜０．０５），试验１组和２组的采食量分别比对照组高５８．６％，３２．２％；日增重分别比对照组高３４．３％和１１．８％。青贮晚稻草中添加Ｓｔｒａｗｚｙｍｅ可以改善青贮晚稻草的发酵品质，提高营养价值。

The experiment was carried out to access the effect of feeding enzyme - treated rice straw on growing performance of growing dairy cows. The experiment was conducted as single factor design, and the experimental cows were received three different diet, that is rice straw sulage treated with enzyme preparation (group 1) and wheat bran, enzyme - treated rice straw silage (group 2) and rice straw silage(control). The result showed that all three kinds of rice straw silage were fermented well, and the dry matter intake (DMI) and average daily gain(ADG) of the cows received group 1 diet were significantly increased compared to control (p> 0.05).DMI of group 1 and 2 were increased by 58.6% and 32.2%, ADG by 34.4% and 11.8% compared to control. Enzyme addition improved the fermentative characteristics and nutritive fresh value of rice straw silage.