【摘要】 选择150只繁殖云岭黑山羊,随机分为5组,每组30只。采用单因子设计,以NRC山羊妊娠期蛋白需要量为参照,分为5个梯度.研究补饲不同蛋白水平日粮对云岭黑山羊母羊繁殖性能的影响。试验结果表明:在试验期内,平均月增重分别为1.968kg、2.284kg、1.886kg、1.882kg、1.540kg,第Ⅱ组与其他四组间日增重差异显著(P<0.05),第Ⅰ组流产率最高,羔羊初生重最大。第Ⅱ、Ⅲ组蛋白水平日粮适于妊娠补饲,其中以第Ⅱ组蛋白水平最好。更多还原

【Abstract】 In this article,150 selected Yunling black ewes were studied in 5 groups randomly and 60 goats every group,using the method of single-factor experiment design in 5 grads according to the protein’s requirement of goats of NRC in the pregnancy,with the aim of studying effect of diet pellets with different nutritional level on ewe of Yunling black goat.The result suggested that the averages yearly weight gain of ewe are 1.968kg 、2.284kg、1.886kg、1.882kg and 1.540kg respectively in 5 groups.The daily weight gain in No.2 group is significantly different compared with that in other groups(P<0.05).the rate of abortus is biggest and the birth weight is most in No.1 group compared with others.diet of protein levels in No.2 and No.3 groups were adapted to supplementary feeding in pregnancy and the level of protein is best in No.2 group更多还原