›› 2015, Vol. 42 ›› Issue (3): 638-643.doi: 10.11843/j.issn.1671-7236.2015.03.020

Previous Articles     Next Articles

Effect of COCs on in vitro Maturation and Parthenogenetic Development of Pig Oocyte

CEN Wen1, HUA Zai-dong2, ZHENG Xin-min2, XIAO Hong-wei2, ZHANG Li-ping2, WU Min-yao1   

  1. 1. Department of Life Sciences, Shaanxi Normal University, Xi'an 710119, China;
    2. Key Laboratory of Animal Embryo Engineering and Molecular Breeding of Hubei Province, Institute of Animal and Veterinary Science, Hubei Academy of Agricultural Science, Wuhan 430064, China
  • Received:2014-09-10 Online:2015-03-20 Published:2015-03-30

Abstract: This experiment was conducted to study the effect of the concentration of epidermal growth factor (EGF) and times of oocytes got rid of cumulus cells on in vitro maturation and development of parthenogenetic embryoes of pig oocytes.The embryos were treated with different concentrations (0,10,15,20,30,40 ng/mL)of EGF for 44 h,maturation rate,cleavage rate and blastocyst rate of oocytes were compared.Removing cumulus cell in different time (18,24,38,44 h) after cultivation to study effect of the time of removing the cumulus cell on maturation rate and the developmental capacity of parthenogenetic embryos.The results showed that the cleavage rate and blastocyst rate of oocytes in maturation media with 10 ng/mL EGF were significantly higher than blank treatment groups (P <0.05).There were no significant differences in the maturation rates of removing cumulus cell after cultivation of 18 h and cultivation of 44 h (P >0.05);The cleavage rate and blastocyst rate of oocytes of removing cumulus cell after cultivation of 18 h were significantly higher than cultivation of 44 h in the together culture group (P <0.05);There were no significant differences in the cleavage rate of removing cumulus cell after cultivation of 18 h and cultivation of 44 h (P >0.05),but the blastocyst rate of oocytes of removing cumulus cell after cultivation of 18 h were significantly higher than cultivation of 44 h in the alone culture group (P <0.05).These results indicated that the treatment of 10 ng/mL EGF was better for porcine oocyte culture in vitro and parthenogeretic development.Removing cumulus cell after cultivation of 18 h could improve the development of parthenogenetic embryos.

Key words: porcine; EGF; cumulus cells; in vitro maturation; embryo development

CLC Number: