›› 2018, Vol. 45 ›› Issue (4): 984-991.doi: 10.16431/j.cnki.1671-7236.2018.04.019

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Study on Polymorphism of BMPR-B Gene and Its Correlation with Reproductive Traits in Large White Pig

HU Huiyan1, JIA Qing1,2, HOU Shengkui1, LIU Jin1, LIU Yangyang3, ZHANG Weifeng4, ZHAO Kunfeng5, WANG Guijiang6   

  1. 1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China;
    2. National Engineering Research Center for Agriculture in Northern Mountainous Areas, Baoding 071000, China;
    3. Hebei Shunde Tianzhao Livestock Technology Co., Ltd., Wanquan 076250, China;
    4. School of Life Science and Food Engineering, Hebei University of Engineering, Handan 056000, China;
    5. Hebei Dongwang Breeding Co., Ltd., Ningjin 055550, China;
    6. Animal Husbandry and Breeding Station of Hebei, Shijiazhuang 050061, China
  • Received:2017-10-23 Online:2018-04-20 Published:2018-04-25

Abstract:

This study was aimed to investigate the polymorphism of bone morphogenetic protein receptor-ⅠB (BMPR-ⅠB) gene and its correlation with the reproductive traits in Large White pigs.The polymorphism of BMPR-B gene was analyzed by high-throughput sequencing technologiy,the association of different genotypes of BMPR-B gene with the total number of births,alive births,deaths and deformities using the least square method by SPSS statistical software.The results showed that the polymorphism was not detected in BMPR-B gene 746A > G and 852G > A loci,in the 804G > C locus,the frequency of GG genotype was dominant genotype,and G was the dominant allele; In the 960C > T locus,the frequency of genotypes CC,TT and CT were higher in American,British and Canadian Large White pigs,respectively.The results of χ2 test showed that the 804G > C and 960C > T loci were fit with Hardy-Weinberg equilibrium in the different Large White pigs lines (P > 0.05).There were no significant differences in the effects of 804G > C locus on the number of total births,alive births,still births,deformity and other reproductive traits of the three different lines of Large White pigs (P > 0.05).The number of stillbirths with TT genotype in American Large White pigs were significantly lower than that of CC genotype in 960C > T locus (P < 0.05),which was decreased by 1.027; The total litter size of the British Large White pigs with TT genotype was significantly higher than that of CC genotype (P < 0.05),and extremely significantly higher than that of CT genotype (P < 0.01),which was in-creased 1.976 and 2.118,respectively; The number of live births in Canadian Large White pigs with TT genotype was significantly higher than that of CC genotype (P < 0.05),the stillbirth and deformity of TT genotype were significantly lower than that of CC genotype (P < 0.05),which were decreased 0.707 and 0.337,respectively.The TT genotype in 960C > T locus could be used as the marker genotype for reproductive traits of three different lines of Large White pigs.

Key words: Large White pigs; BMPR-B gene; reproductive traits; correlation analysis

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