摘要
以南江黄羊为父本改良理县藏山羊所获得的杂交一代存活率达 1 2 4 2 8% ,较藏山羊的存活率1 1 3 78%提高 1 0 5个百分点 ,F1代初生重公、母分别为 2 1 9± 0 2 4kg和 1 78± 0 2 8kg ,较藏山羊 (♂ ) 1 75± 0 2 6kg ,,(♂ ) 1 4 0± 0 2 9kg相比差异极显著 (P <0 0 1 ) ,F1代不同月龄体重与相应的藏山羊组差异极显著(P <0 0 1 ) ;F1代不同月龄体尺与相应的藏山羊组差异显著 (P <0 0 5 )或极显著 (P <0 0 1 ) ;F1代生长发育快 ,适应性强 ,1 8月龄阉羊和母羊体重分别可达 2 7 6 9± 2 77kg、2 5 85± 2 2 9kg ,较 1 8月龄藏山羊 1 9 30±3 38kg、1 6 86± 2 4 5kg ,分别增重 43 4 7%、5 3 32 % ;杂交一代羊 1 8月龄均可出栏 ,而藏山羊 30月龄以后方可出栏。
A significant heterosis resuts from crossing Nanjiang yellow goats with Tibetan goats of velley type.The reproduction suvival rate of the first crossbred generation(F 1)is 124.28%,which is 10.5 per centage higher than the pure breed of Tibetan goats.There is a significant different(P<0.01)between F 1 and pure breed Tibetan goats in birth weight and liveweight of different age.Liveweight of castrated F 1 male and female of 18-months old reaches 27.69±2.77kg and 25.85±2.29kg repectively.Marketing age is 18 months for F 1,but 30 months for Tibetan goats.
出处
《四川畜牧兽医》
2000年第B07期59-60,62,共3页
Sichuan Animal & Veterinary Sciences
