›› 2019, Vol. 46 ›› Issue (2): 512-518.doi: 10.16431/j.cnki.1671-7236.2019.02.022

• Genetics and Breeding • Previous Articles     Next Articles

Research Progress on Application of Gonadotropin-releasing Hormone and Its Analogues in Porcine Reproduction

LIU Chuang1,5, LI Nan1, WEI Qiaoli1,5, FANG Xiaohuan1,5, TIAN Jianhui2, WENG Shiqiao3, LIU Yan4, LI Junjie1,5   

  1. 1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China;
    2. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    3. Ningbo Sansheng Biological Technology Co., Ltd., Ningbo 315000, China;
    4. Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China;
    5. Research Center of Cattle and Sheep Embryo Engineering Technique of Hebei, Baoding 071000, China
  • Received:2018-08-07 Online:2019-02-20 Published:2019-02-20

Abstract:

Gonadotropin-releasing hormone (GnRH) is a reproductive hormone secreted by the hypothalamus.It mainly participates in regulating the reproductive activities of animals through the hypothalamic-pituitary-gonadal axis,and can also directly play an important role in animal gonads or other organs.GnRH in mammals has the same ten peptide structure.Different GnRH analogues can be synthesized by changing the sixth,ninth and tenth amino acids in the ten peptide structure.GnRH and its analogues can affect animal reproductive performance by stimulating luteinizing hormone (LH) secretion,inhibiting estrogen receptor dimerization and regulating the synthesis of proteins associated with embryo implantation.GnRH and its analogues in production have been shown to increase the fertility of pigs.The application of GnRH analogues still has some problems,such as the significant effect of the second pregnancy,the promotion of ovulation but not the increase of litter size.This paper introduced the application of GnRH and its analogues in sow breeding from such aspects:The source and function of GnRH,the structure of GnRH and its analogues,the structure and function of gonadotropin-releasing hormone receptor,the effect of GnRH and its analogues on reproductive performance of swine,existing problems and prospects.

Key words: gonadotropin-releasing hormone (GnRH); GnRH analogues; porcine reproduction

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