用代乳粉替代全乳饲喂荷斯坦母犊牛的试验

Experiment of Feeding Female Holstein Calf with Milk Replacer Substitute Full Milk

选择出生日期5～8 d,5 d初乳期后的荷斯坦母犊牛20头,按照体重相近的原则随机分为两组,每组10头,记为试验组和对照组,试验组饲喂代乳粉,对照组饲喂全乳,其精料、粗料两组均相同,哺乳期45 d,断奶。1月龄和2月龄两组牛平均日增重,第一个月分别为513 g、611 g;第二个月分别为823 g、812 g。试验组生长发育正常,第二个月试验组比对照组饲料转化率稍有提高,表明代乳粉可用来代替全乳饲养犊牛。

Twenty Holstein calves from 5 to 8 d of age,after 5 d foremilk period were randomly divided into two groups according to similar weight,10 calves in each group,experiment and control group.Milk replacer was fed to experiment group and full milk was fed to control group,the formula of the concentrate and roughage feed in the two groups were alike,the animals weaned after 45 lactation period.The results indicated that during the first month,the average weight gain of calves was 513g and 611g,during the second month,the average weight gain of calves was 823g and 812g,respectively.The calves in the experiment group grew normally,during the second month,feed conversion ratio of experiment group improved slightly compared to control group,this indicate that milk replacer can substitute full milk to feed calves.