摘要
该研究以小尾寒羊、湖羊、湖寒杂交羊为实验素材,以FecB基因为候选基因,探讨多胎基因在3种羊群体中的变化规律。结果表明:小尾寒羊、湖羊、湖寒杂交羊FecB基因均有BB、B+、++三个基因型,其中小尾寒羊的基因型频率分别为0.47(70)、0.30(44)、0.23(34),湖羊的分别为0.71(117)、0.23(37)、0.06(10),湖寒杂交羊的分别为0.28(70)、0.63(156)、0.08(20);经测序发现,在746 bp处发生A→G的突变。通过对FecB的检测,为下一步湖寒杂交后代母羊选育提供了理论依据。
In order to explore the variation of fecundity gene in the flock of Hu sheep,Small-tail han sheep and their crossbred ewes, the FecB gene were detected. The results showed that the FecB gene had three gene types of BB, B＋ and ＋＋. The gene type fre- queneies of the FecB gene in Small-tail han sheep were 0.47 （70）, 0.30（44 ）and 0.23（34）, respectively;the gene type frequen- ties of the FecB gene in Hu sheep were 0.71 （ 117 ）, 0.23 （37） and 0.06（10 ）, respectively, the gene type frequencies of the FecB gene in their crossbred ewes were 0.28 （70）, 0.63（ 156 ） and 0.08（ 20 ）, respectively. The sequence analysis showed that there was a mutation at 746 bp（ A→G ）. This detection would provide a theoretical basis for the further breeding of hybrid ofllqpring.
出处
《中国草食动物科学》
CAS
2017年第2期1-3,共3页
China Herbivore Science
基金
甘肃省科技重大专项计划(1602NKDH020)
国家肉羊产业技术体系项目(CARS-39)
