杜泊羊、小尾寒羊及其杂一代生产性能的测定

对杜泊羊,小尾寒羊及其杂一代羔羊的生产性能进行了测定。结果显示,杜寒杂一代的初生重较纯种杜泊羊和小尾寒羊分别提高了22.27%、34.03%(P<0.01)。其60日龄平均日增重小尾寒羊增加117g(P<0.01)。从出生到周岁的体尺测定结果表明,杜寒杂一代的胸围比纯种杜泊羔羊、比小尾寒羊羔羊分别提高了0.13cm、2.57cm,差异显著(P<0.05)。杜寒杂一代初产母羊的产羔率比纯种杜泊羊初产母羊的产羔率提高了36.32%。5月龄杜寒杂一代比同龄小尾寒羊的屠宰率高2.6%,净肉率提高10.93%。

Mensuration of Productive Performance for Dorper sheep,Small-tail Han Sheep and Their Grossbred F_1

The experiment measured the productive performance for Dorper sheep,Small-tail Han sheep and their crossbred F_1.The results indicated that the birth weight of increased 22.27% and 34.03% than Dorper sheep and Small-tail Han Sheep respectively(P<0.01).During 0-60days the average daily gain weight of the crossbred F_1 increased 117g than Small-tail Han Sheep(P<0.01).The chest girth of the crossbred F_1 enhanced 0.13cm and 2.75cm than Dorper sheep and Small-tail Han Sheep from 0-12months respectively(P<0.05).Lambing rate of non-multifarious ewes enhanced 36.32% than that of Dorper sheep.Slaughtering percentage of 5-month the crossbred F_1 was 2.6% higher than that of Small-tail Han Sheep,and net meat rate was enhanced 10.93% than that of Small-tail Han Sheep.