萨陶寒、陶寒、特寒F1代繁殖成活率比较试验

本文对某场2010、2011年所产萨陶寒、陶寒、特寒F1代羊生产性能进行数据分析后结果显示，萨陶寒、陶寒、特寒代羔羊繁殖率高，都遗传了小尾寒羊的高繁殖力，3组之间萨陶寒F1代繁殖成活率明显高于陶寒、特寒F1代羊。小尾寒羊虽然产羔多，产羔率可达180％以上，但其繁活率却略低于陶寒F1代羊。

Comparison Test of F1 Generation Reproductive Survival Rate on Different Mutton Sheep Varieties

Small-tail Han sheep is China＇s famous sheep variety, known as high fertility around the world. In recent years, pure mutton sheep varieties were introduced from abroad and crossbred with Small-tail Han Sheep, polyembryony was used to produce hybrid sheep and obtained achievements. Analysis on F1 growth performance of 2010 and 2011 for a sheep farm, the results indicated that survival rate of F1 （Poll Dorset × Han Sheep） was higher than Small-tail Han Sheep. Thus, more econom- ic advantage will obtain on hybrid pattern with pure sheep as male parent, F1 （Poll Dorset× Han Sheep as female parent.