苜蓿草粉替代奶牛饲料中部分精料的效果试验

选择年龄、体重、胎次、生理状况、产奶量、健康状况相近的25头奶牛,随机分为5组（即对照组、试验1组、试验2组、试验3组和试验4组）,每组5头,进行为期60 d的饲养试验。试验1组、试验2组、试验3组和试验4组的饲料配方是在对照组饲料配方的基础上,分别用10%、20%、30%和40%的苜蓿草粉替代相应的精料。试验结果表明,试验1组、试验2组、试验3组和试验4组与对照组相比,产奶量分别提高5.6%、8.75%、10.82%和6.54%,经济效益提高11.30%、19.02%、24.74%和13.20%。

Effect of Alfalfa Meal Substituting Part of Dietary Concentrate of Diary Cattle

25 dairy cattle of the similar age,weight,parity,physiological status,milk yield and health status,were divided into 5 groups(control group,experimental group 1,experimental group 2,experimental group 3 and experimental group 4),each group had five cows,for a period of 60 d of the feeding trial.The feed formula of Group 1,group 2,group 3 and group 4 was formulated on the basis of the control group,10%,20%,30% and 40% of alfalfa meal substituting the corresponding concentrate.The results showed that milk yie...