枯草期繁殖母羊补饲对繁殖效果和后代羔羊育肥效果的影响

Effects of Supplementary Feeding of Breeding Ewes on Reproductive Effect and Fattening Effect of Offspring Lambs in Dry Season

通过在枯草期对繁殖母羊进行产羔前2个月及产羔后5个月的补饲试验,测定母羊一个繁殖周期内的繁殖效果,结果表明:试验组的羔羊繁殖成活率、羔羊平均初生重、母羊受胎率比对照组分别高10%、0.65 kg、11.11%,羔羊平均初生重差异极显著(P<0.01)。另对经补饲的繁殖母羊所产周岁后代羔羊和不补饲的繁殖母羊所产周岁后代羔羊进行全舍饲育肥试验。育肥期满时试验组羔羊体重比对照组高4.72 kg,差异极显著(P<0.01),试验组羔羊的育肥纯收入比对照组高61.9元,育肥效果更明显。

In this paper,the feeding experiment of ewes was carried out in the withered period 2 months before lambing and 5 months after lambing to determine the reproductive effect of ewes in a breeding cycle.The results showed that the reproductive survival rate of lambs,the average birth weight of lambs and the conception rate of ewes in the experimental group were 10%,0.65 kg and 11.11% higher than those in the control group,respectively.There was a significant difference in the average birth weight of lambs(P<0.01).In addition,fattening experiment was carried out on the lambs of one-year-old produced by supplementary feeding ewes and one-year-old lambs of breeding ewes without supplementary feeding.The results showed that the weight of lambs in the experimental group was 4.72 kg higher than that in the control group at the end of fattening period,and the difference was extremely significant(P<0.01).The fattening net income of the experimental group was 61.9 yuan higher than that of the control group,and the fattening effect was more obvious.