青贮玉米替代苜蓿干草饲喂断奶初期纯种黑安格斯肉牛试验初报

Black Angus Cattle Early Weaning Were Fed by Silage Maize Instead of Alfalfa Hay

选用30头试验牛按体重大小,随机分成对照组、试验组Ⅰ组和试验Ⅱ组3个组。试验组用青贮玉米替代苜蓿干草,对照组全部饲喂苜蓿干草。结果表明:试验组Ⅰ组育肥牛的平均日增重1 006g,分别比对照组和试验组Ⅱ提高6.08%和12.24%。试验组Ⅰ组饲喂效果和经济效益都相当明显,其增重价值、育肥收入和日均收入都明显高于试验Ⅱ组和对照组,差异显著(P<0.05),其中日均收入比对照组提高43.45%,差异达到极显著水平(P<0.01)。

A total of 30 experiment cattle were selected and divided randomly into three groups （ExperimentⅠ, Experiment Ⅱ and control） through body weight. Cattle in experiment groups were fed with silage maize instead of alfalfa hay, however, cattle in the control were fed with alfalfa hay. The results showed that average daily gain of cattle in the Experiment Ⅰ was 1006 g, and 6.08% andl2.24% increase compared with the control and Experiment Ⅱ. The feeding and economic interest of Experiment I was fairly obvious and its weight value, fattening and daily average revenue were significantly higher than those of Experiment Ⅱ and control （P〈 0.05）. And average daily income increased 43.45%, which reached significant level （P〈 0.01）.