放牧牦牛暖棚补饲效果观察

Effect of Feed Supplement in Grazing Yaks in Warm-shelter

通过对放牧牦牛全舍饲进行补饲,期中试验组公牛组增重1.19kg,增重率为1.71%。对照组公牛增重-8.02kg,增重率为-13.13%。试验组公牛比对照组公牛多增重9.21kg,高14.306%,差异性极显著(Pp<0.01)。期中试验组母牛增重4.78kg,增重率为6.63%,对照组母牛增重-7.82kg,增重率为-13.80%,试验组母牛比对照组母牛多增重12.60kg,高20.43%,差异性极显著(P<0.01)。期末试验组公牛增重4.47kg,增重率为6.01%,对照组公牛增重-11.55kg,增重率-23.31%,试验组公牛比对照组公牛多增重16.02kg,高29.32%,差异性极显著(P<0.01)。期末实验组母牛增重10.20kg,增重率为12.39%,对照组母牛增重-10.38kg,增重率为-22.42%,组母牛比对照组母牛多增重22.48kg,高34.81%,差异性极显著(P<0.01)。

Supplement experiment was conducted in Grazing Yaks in warm - shelter. The results showed that gaining weight,rate of gaining weight are I. 19kg and I. 71% respectively in male yaks in experimental group;but for control group,These are -8.02kg and -13.13%. There is 9.21kg more than control group, increasing by 14. 306% ,There is very significant difference between experimental group and control group （ P 〈 0.01 }. For female yaks, These are 4.78kg, 6.63% and -7.82kg, -13.80% respectively in experimental group and control group in the middle term of experiment Experimental group is 12.60kg more than control group, increased by 20.43%. There is very significant difference between them IP 〈 0.01 }. The gaining weight, gaining rate of male yaks in both group are 4.47kg, 6.01% and - 11.55 kg, -23.31% respectively in end term of experiment. The experimental group is 16.02kg more than control group, increased by 29.32% . There is very significant difference. Meanwhile for female yaks,are 10.20kg, 12.39% and - 10.38kg, -22.4%. The experimental group is 22.48kg more than control group ,increased by 34.81% respectively, There is very significant difference（P 〈0.01}.