| 摘要: |
| 选择道寒羔羊30只、萨寒羔羊30只和小尾寒羊羔羊20只,施予相同的饲养管理条件,对供试羔羊的生长和产肉性能进行了系统研究。结果表明,90日龄断奶时,道寒和萨寒羔羊平均体重分别为24.14和24.88 kg,分别比同龄小尾寒羊高23.47%和27.52%(P<0.01);180日龄时,道寒和萨寒羔羊平均体重分别为44.8和46.14 kg,分别比小尾寒羊高20.79%和24.26%(P<0.01);在产肉性能方面,道寒和萨寒羔羊的活重、胴体重和净肉重极显著大于同龄小尾寒羊(P<0.01),骨重、肉骨比、GR值、眼肌面积、肩部、背部、腰臀部、股部、胸部和腹部的胴体切割块重质量显著大于小尾寒羊(P<0.05),颈部、腰部、前小腿和后小腿质量略大于小尾寒羊(P>0.05);萨寒羔羊产肉性能稍优于道寒羔羊。萨寒和道寒羔羊具有良好的适应性,可以在宁夏及周边地区进行推广养殖。 |
| 关键词: 小尾寒羊 杂交组合 肥育性能 |
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| 基金项目:农业部农业结构调整重大项目（05-07-03B）；宁夏农垦局科技示范合作项目（41302204-11203-533） |
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| Research on fattening performance of different crossing model of small tail Han Sheep |
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| Abstract: |
| In order to carry out systemic research on fattening and slaughter performance of trial lambs,we selected 30 lambs of F1(D×H),30 lambs of F1(S×H) and 20 lambs of Han and provided same diet and management.The results showed that body weights of F1(D×H) and F1(S×H) were respectively 24.14 and 24.88 kg when lambs were weaned on 90th day,and their weights increased by 23.47% and 27.52%（P<0.05）,respectively,compared with the small tail Han sheep of the same age.On 180th day,body weights of F1(D×H) and F1(S×H) were 44.8 and 46.14 kg,respectively,20.79% and 24.26% respectively heavier than small tail Han sheep.In slaughter,the live weight,carcass weight,pure meat weight of F1(D×H) and F1(S×H) were heavier than small tail Han sheep（P<0.05）;while their bone weights,rate of meat and bone,Gr value and area of rib eyes were higher than small tail Han sheep.The weights of carcass cutting of crossed lamb,shoulder,back,rump,breast and abdomen are significantly heavier than small tail Han sheep（P<0.05）;but weights of neck,lion,fore shank and hind shank are lighter than small tail Han sheep（P<0.05）.The study showed a trend that lamb of F1(S×H) was better than lamb of F1(D×H),and F1(D×H) and F1(S×H) had good adaptability and could be spread and feeded in area of Ninxia and its vieinity. |
| Key words: small tail Han sheep,crossing model,fattening performance |
