兰州段家滩奶牛场育成母牛日粮配方验证

验证了六、九、十二月龄各10头育成母牛用电子计算机筛选日粮配方的饲喂和增重效果。91天日增重分别提高0.195、0.190和0.274公斤,单位增重饲料成本分别降低0.353、0.444和0.734元。达相同体重时每头牛总饲料费分别降低21.81％、28.19％和34.53％,由于生长加快还可提前175天配种投产。

A Comparative Feeding Study on Verifying the Diet Formula for Dairy Heifers

Using 30 dairy heifers at the ages of 6, 9 and 12 months, the authors designed a comparative study to verify the diet formula selected by the electronic computer for dairy heifers. Result showed thai the daily gain of the test groups increased 0.195,0.193 and 0.274 kilograms respectively more than the control groups, the feedstuff costs for one-kilogram gain decreased 0.353, 0.444 and 0.734 yuan respectively. When the control grcups reaching the same average body weights as the test groups, the total feedstuff costs would be 21.80％, 28.29％ and 35.53％ respectively higher than those of the test groups. Because the diet formula tested cart accelerate the growth, the test groups can mate and produce milk 178 days earlier than the control groups,