中文摘要：

为加快新疆羊肉生产能力,提高肉羊生产群的繁殖性能,分析影响新疆肉羊业发展的制约因素、肉用羊品种生产性能、引进多胎绵羊品种利用特点,以及绵羊多胎基因（FecB）利用途径。以引进的多胎绵羊品种资源为基础,将绵羊多胎基因（FecB）连续导入本地绵羊群体,快速增加本地肉羊生产群多胎基因（FecB）频率,充分发挥绵羊多胎基因（FecB）性能,提高肉羊生产群的产羔率,提出绵羊多胎基因（FecB）有效利用方式,肉羊新品种（系）选育新方法,以及绵羊多胎基因（FecB）的推广与应用技术。为新疆肉羊业生产提出适合当地气侯环境、生产方式的绵羊多胎基因（FecB）利用新方法。

英文摘要：

In order to improve the Xinjiang mutton production capacity and sheep reproduction, we will use multiple births sheep breeds which have FecB gene to cross with Altai sheep and Kazak sheep. So the hybrid progeny that carries FecB gene will increase 1-1.5 Iambs number, which will rapid increase the Xinjiang mutton production.This paper had analyzied the current situation of Xinjiang mutton production, meat sheep breeds and multiple births sheep breeds traits, FecB gene utilization.In this article, we give suggestion on effective use patterns of sheep multiple births gene （FecB） and a new method of sheep breeding. We can use FecB gene to achieve new sheep breeds and varieties promotion and demonstration, which methods can meet the Xinjiang climate environment and lamb production.