The Suppression of Maturational Competence by Streptomycin during In vitro Maturation of Goat Follicular Oocytes

  • Kang, Jae Ku ;
  • Chang, Suk Min ;
  • Naruse, Kenji ;
  • Han, Jeung Whan ;
  • Park, Chang Sik ;
  • Jin, Dong Il
  • Received : 2004.01.30
  • Accepted : 2004.04.30
  • Published : 2004.08.01


Antibiotics are common additives in culture media during in vitro embryo development, but their effects on oocyte maturation in vitro have not been tested. The effects of penicillin, streptomycin and gentamicin on the maturational competence and subsequent development potential of goat follicular oocytes were examined after parthenogenetic activation in vitro. Maturation rates at 24 h after in vitro maturation, and parthenogenetic development at 48 h after activation, were evaluated by observing the protruding first polar body and the 4 cell stage cleavage, respectively. When streptomycin was present in the maturation medium, the percentages of matured oocytes 24 h after activation were significantly (p<0.01) lower than those from the other groups (42.5-45.7% vs. 69.1-73.8%). Penicillin and gentamicin treatment did not affect the maturation rates or the percentages reaching the 4 cell stage 48 h after activation. There was no significant difference in cleavage rates among the different antibiotic treatments 48 h after activation. Therefore, streptomycin suppresses the in vitro maturation of immature goat oocytes, but does not influence their subsequent development.


Antibiotics;Streptomycin;In vitro Maturation;Goat Oocytes


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Supported by : Korean Science & Engineering Foundation