Study on In Vitro Development of Vitrified-Thawed Porcine Oocytes

  • Chung, Gun-Ho (College of Veterinary Medicine, Chungnam National University) ;
  • Rhee, Man-Hee (College of Veterinary Medicine, Kyungpook National University) ;
  • Kim, Sang-Keun (College of Veterinary Medicine, Chungnam National University)
  • Published : 2009.06.30

Abstract

In the present study, effects of concentration of cryoprotectant solutions on the nuclear maturation of vitrifiedthawed porcine oocytes were examined. Oocytes were cultured in TCM-199 medium supplemented with 5% FBS at $38^{\circ}$C in 5% $C0_2$ and air. The percentage of monospermy in the toxicity group and vitrification group (22.0 ${\pm}$ 3.0% and 31.5 ${\pm}$ 3.5%) was decreased compared with that of the control group (44.0 ${\pm}$ 4.0%). The percentage of in vitro development to blastocyst in the toxicity group and vitrification group (12.0 ${\pm}$ 2.5% and 14.8 ${\pm}$ 2.8%) was decreased compared with that of the control group (28.0 ${\pm}$ 3.0%, p<0.05). The survival and in vitro developmental rate of oocytes vitrification-thawed with EDS and EDT + TCM-199 medium supplemented with 0.1% PVA were 46.3 ${\pm}$ 3.0%, 54.5 ${\pm}$ 3.8% and 14.8 ${\pm}$ 2.5%, 16.4 ${\pm}$ 2.7%, respectively. This results were lower than the control group (28.0 ${\pm}$ 3.5%). The in vitro developmental rate of embryos vitrified with EDS and EDT supplemented PVA did not have a significant difference. The survival and in vitro developmental rate of vitrified-thawed morula and blastocyst embryos were 44.2 ${\pm}$ 3.5%, 17.3 ${\pm}$ 3.0% and 48.1 ${\pm}$ 4.2%, 18.5 ${\pm}$ 3.5%, respectively. Vitrified morulae and blastcyst embryos had a lower survival and developmental rates than their control counterparts.

Keywords

References

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