影响哺乳期羔羊生长的母羊因素分析

The Effect of Does on Kids' Growth in Lactation Period

为探索母羊因素对哺乳期云上黑山羊羔羊生长发育的影响,根据母羊体重、胎次分别选取云上黑山羊初生羔羊90只和120只,公、母各半,从出生开始直至90日龄断奶,每10天进行1次体重测定,进行生长发育分析。结果表明:(1)母羊产后体重对羔羊初生重、哺乳期体重具有显著影响(P<0.05)。母羔中,38~45 kg母羊组和48~62 kg母羊组的羔羊初生重、平均日增重均显著高于28~35 kg母羊组(P<0.05)。公羔中,38~45 kg母羊组的羔羊初生重显著高于其他两组羔羊(P<0.05),48~62 kg母羊组其羔羊平均日增重显著高于其他两组羔羊(P<0.05)。(2)母羊胎次对母羔初生重没有显著影响,但对母羔哺乳期体重均有显著影响(P<0.05),母羔中,3胎、4胎母羊组的羔羊平均日增重均显著高于1胎和2胎母羊组;母羊胎次对公羔的影响不显著。说明母羊产后体重显著影响羔羊胎儿期和哺乳期的生长发育,合适的母羊体重可以为羔羊提供充足的营养;母羊胎次仅对哺乳期母羔具有显著影响,母羊的母性行为随胎次的增加而完善。

The objective of the study was to research the effect of does on kids'growth in lactation period.Growth data were collected from 90 and 120 Yunshang Black goat kids according to does weight and parity.The body weights of these kids were measured every 10 days from birth until weaning at 90 days.The data used to calculate growth.The results were as follows:①postpartum weight of doe had significant effect on the kid's birth weight and lactation weights(P<0.05).Among female kids,birth weight and average daily gain of 38-45 kg and 48-62 kg postpartum weight of doe were significantly higher than those in the 28-35 kg group(P<0.05).Among male kids,birth weight of 38-45 kg postpartum weight of doe was significantly higher than the rest two groups(P<0.05).②Parity of doe had no significant effect on the birth weight of female kids,while parity of doe had significant effect on the lactation weights of female kids(P<0.05).Among female kids,average daily gain of doe groups of 3 and 4 parities was significant higher than those of 1 and 2 parities;parity of doe had no significant effect on male kids.Postpartum weight of doe has significant effect on kid growth.Proper postpartum weight of doe can provide sufficient nutrition for kids.Parity of doe only has significant effect on female kids in lactation period.Maternal behavior of doe increases with parity increasing.