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Effect of $\beta$-Mercaptoethanol on In Vitro Maturation of Porcine Folliculay Oocytes and Development of Porcine IVM/IVF Embryos  

한만희 (축산기술연구소)
이경본 (충남대학교 동물자원학부)
천행수 (충남대학교 동물자원학부)
박병권 (공주대학교 영상보건대학 특수동물학과)
서길웅 (충남대학교 동물자원학부)
이규승 (충남대학교 동물자원학부)
Publication Information
Korean Journal of Animal Reproduction / v.27, no.2, 2003 , pp. 125-133 More about this Journal
Abstract
The present study was carried out to examine the effect of $\beta$-Mercaptoethanol ($\beta$-ME) on in vitro maturation (IVM) of porcine follicular oocytes and oxygen concentration with $\beta$-ME on in vitro development (IVD) of porcine IVM/IVF embryos. The results were summarized as follows. 1. The rates of nuclear maturation, penetrated oocytes, polyspermic oocytes, pronucleus formation and mean numbers of the penetrated sperms were not significantly different using NCSU-23 maturation media for 0, 25, 50 and 100 $\mu$M $\beta$-ME (P>0.05). 2. The rates of blastocyst formation at day 7 after in vitro fertilization were higher in oocytes matured with 25 $\mu$M $\beta$-ME (25.4$\pm$0.9%) than in those matured with 0 (14.5$\pm$1.6%), 50 (17.3$\pm$1.7%) and 100 $\mu$M (12.4$\pm$1.3%) (P<0.05). However, no differences ware found in total cell numbers of blastocyst among the treatments. 3. The rates of blastocyst formation at day 7 after in vitro fertilization were higher in the NCSU-23 Culture medium With 25 $\mu$M $\beta$-ME (23.6$\pm$2.8%) than in those Cultured With 0 (15.4$\pm$4.4%), 12.5 (17.5$\pm$2.3%) and 50 $\mu$M $\beta$-ME (18.6$\pm$2.1%) Under the 5% and 20% $O_2$ Concentrations (P<0.05). However, no differences was found in total cell numbers of blastocyst among the treatments. These results suggested that the addition of 25 $\mu$M $\beta$-ME in the IVM/IVD media were effective on the porcine embryo production. However, the rates of blastocyst formation and total cell numbers of blastocyst at day 7 of porcine IVM/IVF embryos were not significantly different in the NCSU-23 culture medium under 5% and 20% 02 concentrations.
Keywords
Porcine embryo; IVM/IVF; $\beta$-ME; $\beta$-mercaptoethanol;
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