2个绵羊群体BMPR-IB基因多态性与绵羊产羔数的关系

发布时间：2018-05-01 00:08

本文选题：BMPR-IB基因 + 产羔数　；参考：《西北农业学报》2017年04期

【摘要】：旨在探讨BMPR-IB基因在不同绵羊群体中的遗传变异及其与产羔数的关系,利用RFLP技术分析杜泊及滩寒杂交羊群体中BMPR-IB的基因型和基因频率,以及不同基因型对母羊产羔数的影响。结果显示:杜泊羊群体均为野生型,未检测到突变纯合或杂合基因型个体。滩寒杂交群体中突变纯合子(BB型)、杂合子(B+型)和野生型(++型)个体数分别为13、48和120。在滩寒杂交羊群体中,BB、B+及++基因型母羊的多羔率分别为63.64%、47.06%和32.08%;BB型经产个体平均产羔数比杂合型(B+)及野生型(++)个体产羔数分别高出0.5和0.59,而杂合子母羊产羔数高于野生型个体,但差异不显著。表明BMPR-IB基因Fec B突变位点对滩寒杂交群体产羔数有显著影响,因此可通过杂交手段提高后代群体Fec~B基因频率来增加产羔数,但BMPR-IB基因是否为调控杜泊羊产羔数的主效基因有待进一步探讨。
[Abstract]:The aim of this study was to investigate the genetic variation of BMPR-IB gene in different sheep populations and its relationship with litter size. RFLP technique was used to analyze the genotype and gene frequency of BMPR-IB and the effect of different genotypes on lambing size of ewes. The results showed that all the populations were wild type and no mutant homozygous or heterozygous individuals were detected. The number of individuals in the mutant homozygous type BB, heterozygote B) and wild type (type B) were 1348,120. respectively. The lambing rate of BBB and genotype ewes were 63.64% and 32.08%, respectively, which were 0.5 and 0.59 higher than those of heterozygote and wild type, respectively, and that of heterozygote ewe was higher than that of heterozygote ewe. Lambs were higher than wild individuals, But the difference is not significant. The results indicated that the mutation site of Fec B of BMPR-IB gene had a significant effect on litter size of Tan cold hybrid population. Therefore, the frequency of Fec~B gene in progeny could be increased by hybridization, and the lambs could be increased by hybridization. However, whether the BMPR-IB gene is the main gene to regulate lambs of du Bo sheep needs to be further studied.
【作者单位】：宁夏大学农学院;宁夏宇泊科技有限公司;
【基金】：宁夏回族自治区肉羊育种专项(NXNYYZ20150101) 宁夏自然科学基金(NZ15030) 宁夏大学自然科学基金(ZR1433)~~
【分类号】：S826

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