无角陶赛特和波德代改良小尾寒羊生长发育性状比较  

Comparative Study on the Growth and Development Trait of Poll Dorset and Smalltail Han Sheep Improved with Borderdale

作　　者：刘建斌[1] 杨博辉[1] 郭健[1] 孙晓萍[1] 程胜利[1] 郎侠[1] 焦硕[1] 冯瑞林[1] 岳耀敬[1] 

机构地区：[1]中国农业科学院兰州畜牧与兽药研究所,甘肃兰州730050

出　　处：《安徽农业科学》2009年第15期7008-7013,共6页Journal of Anhui Agricultural Sciences

基　　金："十一五"国家支撑计划项目(2006BADOLAL);基本科研业务费专项基金项目(BRF070101)

摘　　要：[目的]探讨培育新品种最佳的杂交组合模式。[方法]以引进的无角陶赛特羊、波德代羊及本地滩羊与小尾寒羊不同杂交组合的后代(杂交一代、杂交二代及杂交三代)为研究对象,采用随机抽样的方法对已培育出的西北肉用绵羊新品种群部分杂交组合生长发育性状在不同月龄通过测定体重体尺指标进行研究。[结果]结果表明,杂种三代生长发育速度快于对应杂种二代,杂种二代生长发育速度优于对应杂种一代;陶波寒杂交组合改良效果较好于陶寒杂交组合,陶寒杂交组合改良效果较好于陶滩寒杂交组合,3种杂交组合改良小尾寒羊效果都好,尤其是高代或三元杂交经济效应更为显著。[结论]选择理想型的三代或二代杂种羊进行横交固定培育新品种的技术方案是可行的。[Objective] The optimum crossing parent of sheep was experimented for elite sheep breeding. [Method] The hybrid offspring（F1 ,F2 and F3） from the combination between the Poll Dorset sheep intnduced,Borderdale and the local Tan sheep and Small-tail Han sheep,respectively,being taken as experimental material, the growth and development index such as the body weigh and length at different ages of the sheep hybrids in the partial population of bred mutton sheep in anrthwestem China was measured with the random sampling method. [ Results] The results showed that the growth and development of F3 were faster than these of F2 and the growth and development of F2 were superior to these of F1. The improvement effect from the combination among. DBH was superior to DH,the combination between DH was superior to DTH and the improvement of Small-tail Han sheep from three combinations was good,especially for higher economic benefit from significant high generation or three-crossbreed. [Conclusion] Therefore,it was feasible to breed the popu- lation of mutton sheep through the fixed crossing between ideal F2 and F3 hybrids.

关 键 词：无角陶赛特羊 波德代 小尾寒羊 滩羊 生长发育 杂交效果 

分 类 号：S826[农业科学—畜牧学]