[目的] 提高羊只的生产性能.[方法] 根据母羊的泌乳曲线和羔羊的生长发育规律,配制标准营养水平(试验1组)和低于标准营养水平15%(试验2组)的代乳料对30日龄羔羊进行早期断乳试验,以正常断乳(90日龄)为对照,比较不同试验组羔羊的日增重和饲料转化率及母羊的发情情况.[结果] 试验1组和试验2组羔羊日增重和料重比均高于对照,30～90日龄2组羔羊的日增重分别为164.6、159.4 g,分别与对照(日增重118.7 g)达到极显著和显著差异水平;试验1组和试验2组母羊发情较早,分别为51、54 d,对照组母羊平均发情期为66 d.[结论] 羔羊早期断乳可使母羊的发情提早12～15 d.%[Objective] The aim was to increase the performance of sheep.[Method]According to the lactation curve of ewes and the growth-development law of lambs, the milk replacer at standard nutrition level (tested group 1) and 15% lower than standard nutrition level (tested group 2) for 30 days old lambs were prepared for early weaning test, with normal weaning (90 days old) as CK, the daily weight gain and feed conversion rate of lamps and estrus situation of ewes in different tested groups were compared. [Result] The daily weight gain and feed conversion rate of lamps in tested group 1 and group 2 were all higher than those of lamps in CK group, the daily weight gain of 30-90 days old lambs in tested group 1 and group 2 were 164.6, 159.4 g resp., being very significantly and significantly higher than that of lambs in CK group (daily weight gain of 118.7 g) resp.. The estrus of ewes in tested group 1 and group 2 was earlier, being 51, 54 d resp., and that of ewes in CK group was 66 d.[Conclusion]Early weaning of lambs could made the estrus of ewes advanced 12-15 d.
展开▼
