›› 2013, Vol. 40 ›› Issue (12): 137-141.

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The Polymorphism of Porcine BMP-6 Gene and its Association with the Litter Sizes

CUI Yu1,2, YANG Shao-cheng3, LIU Di4, HUA Yu-ping5   

  1. 1. Northeast Forestry University Postdoctoral Programme, Heilongjiang Academy of Agricultural Sciences Postdoctoral Programme, Harbin 150086, China;
    2. College of Agriculture, Hainan University, Haikou 570228, China;
    3. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China;
    4. Institute of Animal Science, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China;
    5. College of Wildlife Resource, Northeast Forestry University, Harbin 150040, China
  • Received:2013-05-21 Online:2013-12-20 Published:2014-02-11

Abstract: In this research, we studied the genetic variation of porcine bone morphogenetic protein 6(BMP-6) gene and the associations between the genetic variation and the litter size. Genetic variation of BMP-6 gene was detected by PCR-SSCP in 268 individuals from five swine breeds (Wild boar, Min pig, Landrace, Beijing Black pig and French Yorkshire), and association analysis were carried out to evaluate the effects of genotypes on litter size in French Yorkshire. The G1104A transition mutation, a synonymous mutation, was found within CDS of BMP-6 gene, and there were three genotypes of AA, AB and BB in all breeds. The A allele frequency was greater in Wild boar and Min pig, whereas the B allele was superior in Landrace, Beijing Black pig and French Yorkshire. The results showed that there were significant differences among sows with different BMP-6 genotypes in TNB and NBA, which implied that the G1104A mutation within BMP-6 gene had the significant influence on litter size in swine.

Key words: pig; BMP-6 gene; polymorphism; litter size

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