【摘要】 在基础日粮中添加稀土添加剂,观察对400kg体重的泌乳奶牛生产性能的影响。结果表明:在基础日粮中添加20mg/kg体重稀土添加剂的I组作用效果明显优于添加12.5mg/kg体重的II组。试验I组、II组的日均产乳量、乳脂肪、乳比重分别比对照组提高9.57%、9.87%、0.195%;7.59%、3.18%、0.097%;且组间存在极显著差异(P<0.01)。更多还原

【Abstract】 Rare earths additive was added in basical diets to observe change of milking performance of dairy cattle (mean weight 400 kg). Daily mean milk yield, butterfat rate ,specific gravity in the test group I,II and in the control group III were conducted Ftest. The results showed the test group I added rare earths additive 20 mg/kg weight in basical diets was clear superiority than the test group II added 12.5 mg/kg weight Daily mean milk yield, butterfat rate , specific gravity increased 9.57%, 9.87%, 0.195%, 7.59%, 3.18%, 0.097% on the control group. Groups had significantly difference(P<0.01).更多还原