小尾寒羊与青海藏系羊杂交改良试验

Test of Hybrid-improvement of Han-sheep with small-tail and Qinghai Tibetan Sheep

利用小尾寒羊与当地藏系羊进行杂交改良,杂一代初生重、1～5月龄体重显著高于藏系羔羊(P＜0.05).131日龄寒杂一代、藏系羔羊进行为期80天的舍饲育肥试验,寒杂一代的总增重、日增重及胴体重分别为13.39kg,167.38g和15.62kg,显著高于藏系羔羊(P＜0.01);寒杂一代的屠宰率也有所提高.寒杂一代比藏系羔羊增收86.25元/只.

A test of hybrid-improvement of Han-sheep with small-tail and native Tibetan sheep （ Han × Tibeban） was conducted. The results showed that the birth weight and the live weight weight of Han × Tibetan F1 at the age of 1 - 5 months were significantly higher than that of Tibetan lamb（ P 〈 0.05）. The fatteming test of yard feeding was conducted in the lamb of Han × Tibetan F1 and Tibetan at the age of 131 days for 80 days. The total gain,daily gain and carcass weight of Han × Tibetan F1 were 13.39 % kg, 167.38g and 15.62kg, respectively, which were significantly higher those of Tibetan lamb（ P 〈 0.01）.The dressing percontage of Han × Tibetan F1 was a few inerease. The ineome per Han × Tibetan F1 was increased 86.25 yuan than that of Tibetan lamb.