›› 2019, Vol. 46 ›› Issue (3): 774-781.doi: 10.16431/j.cnki.1671-7236.2019.03.016

• Genetics and Breeding • Previous Articles     Next Articles

Polymorphism of PRLR and FSHβ Genes and Its Association Analysis with Reproductive Traits in Pigs

FAN Yiping1, WANG Xiaomei2, JIA Qitao3, LI Chengbo4, LIANG Xiaojuan1, CAO Chunwei3, ZHOU Lei2, TAO Cong1, ZHAO Jianguo3, LIU Jianfeng2, WANG Yanfang1   

  1. 1. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    3. Institute of Zoology, Chinese Academy of Science, Beijing 100101, China;
    4. Shandong Huatexier Breeding Co., Ltd., Wudi 251900, China
  • Received:2018-09-30 Online:2019-03-20 Published:2019-03-20

Abstract:

This study was aimed to investigate the polymorphism of prolactin receptor (PRLR) and follicle-stimulating hormone β (FSHβ) genes and its association with the reproductive traits in sows.The polymorphism of PRLR and FSHβ genes in 487 sows of Large White,Duroc and Landrace pigs was detected by PCR-RFLP method,and the association between different genotypes and reproductive traits such as total litter size,litter size,weaning litter weight and weaning litter size were analyzed by One-Way ANOVA analysis and LSD method.The results showed that B allele of PRLR gene was predominant allele in Large White and Landrace pigs,and the gene frequency were 0.717 and 0.548,respectively.The total number born of BB genotype in Large White pig was significantly higher than that of AA genotype (P<0.05),the weaning litter weight of BB genotype in Landrace pig was significantly higher than that of AB genotype (P<0.05).B allele of FSHβ gene had a high frequency in Large White,Duroc and Landrace pigs,and the gene frequency were 0.804,0.760 and 0.789,respectively.The total number born and number born alive of BB genotype in Large White pig was significantly higher than that of AB genotype (P<0.05),displaying BB>AA>AB trend.In conclusion,the polymorphism of PRLR and FSHβ genes significantly affected the reproductive traits of sows in Rongchang pigs farm,and they could be considered as candidate selective markers for molecular breeding of sows.

Key words: pig; PRLR gene; FSHβ gene; polymorphism; reproductive traits

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