【摘要】 应用“母犊素”分别对荷斯坦牛、西门塔尔牛、杂种牛和土种牛提高产母犊率的试验,结果表明试验组牛平均产母犊率为76.3%,对照组为38.4%,比对照组提高37.9%,差异极显著(<0.01)。品种间的差异不明显,产母犊率最高的为杂种牛达81.0%,取得了较为理想的效果。更多还原

【Abstract】 By using mudusu,an experiment about improving female-calving rate was executed in groups of Holstein,Sim-mental,hybrid-cow and local-breeding cow.The result show that female-calving rate in test group(76.3%) was 38.4% high than control group(37.9%)(< 0.01.) the female-calving rate in local-breeding group(81.0%) was highest in all groups.更多还原