›› 2018, Vol. 45 ›› Issue (6): 1633-1638.doi: 10.16431/j.cnki.1671-7236.2018.06.026

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Research Advance on Placenta Development and Its Regulated Genes in Pig

HU Qun, YE Nan, SHI Zeyu, GU Ting, CAI Gengyuan, LIU Dewu, WU Zhenfang, HONG Linjun   

  1. National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
  • Received:2017-11-21 Online:2018-06-20 Published:2018-06-15

Abstract:

The placenta is an organ that connects the fetus to the uterine wall to allow nutrient uptake,gas exchange and waste exclusion.During gestation in pig,the function of placenta is one of the most importance factor that influence the litter size,stillbirth and the mortality of pre-weaning.In this review,the authors summarized the process of placental formation and morphological changes during the first trimester of pregnancy,the formation of placental folds in the second trimester,and the changes of the placental folds in the second trimester of pregnancy.We also analyzed the related genes that regulate the establishment and development of porcine placenta,including HYAL,CTSB,CTSL1 and HPSE genes.The review will provide scientific guidance for future studies on the placental efficiency and the sow fertility.

Key words: pig; gestation; placenta development

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