不同饲养方式对妊娠期济宁青山羊繁殖性能的影响

Effects of Different Feeding Ways on the Reproductive Performances of Jining Grey Goat in Gestation Period

[目的]比较舍饲和放牧补饲条件下济宁青山羊妊娠母羊的繁殖性能。[方法]分别研究舍饲和放牧补饲条件下青山羊妊娠母羊平均产羔率及产后发情率、羔羊初生重和断奶成活率,分析不同饲养方式对青山羊妊娠母羊繁殖性能的影响,探讨适宜的饲喂方式。[结果]养殖方式和营养水平对济宁青山羊发情率、受胎率和产羔率没有显著影响。由于舍饲和放牧补饲造成的管理和营养水平差异,舍饲组羔羊初生重和断奶成活率比放牧补饲分别提高10.7%和17.1%,表明饲养方式是影响济宁青山羊妊娠母羊繁殖性能的主要因素。[结论]可以通过改善饲养管理水平来提高母羊繁殖性能和羔羊成活率,从而进一步提高养殖效益,促进济宁青山羊规模养殖的发展。

[ Objective ] The research aimed to compare the reproduction performances of pregnant ewes of Jining grey goat under the conditions of barn feeding and grazing with supplementary feeding. [ Method] The average lambing percentage and postpartum estrus rate of pregnant ewes, birth weight and weaning survival rate of lambs under the conditions of barn feeding and grazing with supplementary feeding were studied. And the effects of different feeding ways on the reproduction performances of pregnant ewes of Jining grey goat were analyzed sand the optimum feeding ways was discussed. [ Result]The feeding ways and nutritional level had no significant influence on the estrus rate, pregnancy rate and lambing percentage of pregnant ewes. The management and nutritional levels caused by barn feeding and grazing with supplementary feeding were differ- ent. The birth weight and weaning survival rate of Iambs under barn feeding conditions increased by 10.7% and 17.1% than that under the con- ditions of grazing with supplementary feeding, which indicated that the feeding ways was the most influencing factor on the reproduction perform- ances of pregnant ewes of Jining grey goat. [ Conclusion ] The reproduction performances of ewes and the survival rate of Iambs could be increased by improving the feeding and management levels, so as to further enhance the feeding benefits and promoting the development of large-scale breeding of Jining arev goat.