ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2010, Vol. 41 ›› Issue (9): 1203-1207.doi:

• 研究简报 • Previous Articles     Next Articles

Study on Intrauterine Environment during Early Pregnancy of Hu Sheep

MAO Da-gan1, SHI Guo-qing1, 2, ZHANG Hong-lin3, YAN Yu-qin1,CHENG Rui-he1 , YANG Li-guo4*   

  1. 1.College of Animal Science &Technology， Nanjing Agricultural University， Nanjing 210095， China； 2. Institute of Animal Science, Xinjiang Academy of Agricultural and Reclamation Scinece， Shihezi 832000， China； 3. School of Biochemical and Environmental Engineering， Nanjing Xiaozhuang College， Nanjing 211171， China； 4．College of Animal Science &Technology， Huazhong Agricultural University， Wuhan 430070， China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-09-20 Published:2010-09-20

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Abstract: To study the fecundity mechanism of Hu sheep，the intrauterine environment during early pregnancy (Day 43) of Hu sheep (Hu) were examined compared to Xinjiang Fine Wool sheep (XJ)． The fetal average weight of Hu was lower than that of XJ (P<0.05) and there was no difference in fetal length and fetal membrane weight (P>0.05)．The uterine weight and the outer and inside diameter of uterine gland of Hu were significantly higher than that of XJ (P<0.01)，while the thickness of mesometrium of Hu was significantly lower than that of XJ (P<0.01)．The RNA/DNA ratio and dry material content in cotyledon of Hu were significantly higher than that of XJ (P<0.01)，while the glucose content was significantly lower than that of XJ (P<0.01)，and the number and size of cotyledon had no significant differences (P>0.05) between the two breeds． The results suggested that the fecundity of Hu sheep was possibly related to the smaller embryo in the larger uterine antrum，the abundant nutrients in the larger uterine gland cavity，the fine transportation function of active cotyledon cells and so as to protect embryos to develop all right．