한국수정란이식학회지 (Journal of Embryo Transfer)
- 제15권1호
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- Pages.1-8
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- 2000
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- 2508-755X(pISSN)
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- 2288-0178(eISSN)
한우에 있어서 초음파기기를 이용한 생체내 개체별 난자 채취 빈도 및 수정란 생산효율에 관한 연구
Effect of Ovum Pick-up Frequency on In Vitro Production of Embryos in Hanwoo Cattle
초록
The ultrasound-guided oocytes cllection (ovum pick-up ; OPU) has become a substitution for superovlation in cattle. The objective of this study was to examine the effect of OPU frequency on the in vitro production of embryos in Hanwoo cattle. Six cycling Hanwoo cows were distributed into two groups for either once or twice weekly OPU sessions. Oocytes were collected by ultrasound-guided follicle aspiration(SA600) using a 6.5HMz transducer and attached with 18 gauge needle, with vacuum pressure of 40 mmHg. The cumulus-oocyte complexes (COCs) collected from each donor were matured in TCM 199 supplemented with 10% fetal bovine serum at 5% CO2 in air at 38.5