缩短犊牛断奶日龄以提高经济效益

Trial on Shortening Weaning Days to Improve Economic Benefit

采用 10头初生犊牛 ,分为 2组 ,每组各 5头 ,分别进行 4 0日龄 (试验组 )和 10 0日龄 (对照组 )断奶试验。试验组 4 0日龄断奶后用代乳料喂至 10 0日龄 ,然后与对照组一起采食普通草料。结果 :两组犊牛各阶段体尺、体重、发病率 ,成活率的差异均不显著。而成本核算试验组每头犊牛的培育成本降低 5 2

In this trial,10 newboin calves were equally divided into 2 groups at random,we dealed with them in the different way.Group Ⅰ called test group was provided milk replacer for 40 days,group Ⅱ called ck group was provided the same thing for 100 days,then 10 calves were fed on common grass.The result is that the difference between two groups in body size and weight during different stages,incidence of a disease,survival rate after weaning was not apparent.However,the expense of test group was decreased by $ 525.