南阳牛日粮中补充微多蛋白素的饲喂效果研究——微多蛋白素替代日粮中部分饼类试验

Feeding Effects of Non protein Additive on Nanyang Yellow Cattle

南阳牛日粮补充微多蛋白素 1 0 0g ,替代相当含氮量的棉饼 ,经过三批三组分别为 50、3 0、50天的对比试验 ,在改变饲喂方式 ,改善适口性后 ,牛只增重和饲料报酬试验Ⅰ组与对照组接近 ;试验Ⅱ组明显高于对照组 ,且在第二、第三批试验中试验Ⅱ组的DE、DCP利用率分别比对照组提高 1 9.70 %、1 4.98%和 1 8.92 % ,1 5.0 5% 。

g feed additive of non protein was used to replace the same quantity of nitrogen from cottonseed meal in the ration of Nanyang yellow cattle. In the test 1, 2, 3 of 50, 30, 50 days, body weight gain and feed conversion of the cattle fed with the additive were nearly same as those of the control group; weight gain and feed conversion of the cattle of group II were obviously improved. In the test 2 and test 3, ration digestible energy availability and digestible crude protein availability of the cattle in group II were raised by 19.7%, 14.98% and 18.92%, 15.05%, compared with those in control group. Feeding expenditure was effectively decreased.