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논문 기본 정보

자료유형
학술저널
저자정보
윤희준 (경상대학교 축산진흥연구소) 이효종 (경상대학교 수의과대학) 최상용 (경상대학교 수의과대학) 박충생 (경상대학교 축산학과)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제22권 제3호
발행연도
1998.1
수록면
221 - 227 (7page)

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This study was carried out to determine the effects of ionomycin and 6-dimethylaminopurine (6-DMAP) treatments on parthenogenesis of rabbit oocytes. The oocytes were randomly assigned to the activation treatments with either ionomycin plus 6-DMAP or electric stimulation. The oocytes were colected from the oviducts of superovulated rabbits at 13~14 hours and 19~20 hours post hCG injection and were activated with 5$\mu$M ionomycin for 5 min and 2 hours incubation in 2mM 6-DMAP. The other oocytes were stimulated by three pulses of 3.6kV/cm for 60 $\mu$sec each 30 min apart, starting 19 hours post in hCG in 0.28M mannitol solution with 100$\mu$M Ca2+ and Mg2+. The results obtained were summarized as follows: 1. Following treatment of the oocytes with ionomycin plus 6-DMAP, the cleavage rate and in vitro developmental rate to blastocyst were significantly(P<0.01) higher in the oocytes collected bet ween 19~20 hours than between 13~14 hours after hCG injection. 2. When the oocytes were treated with ionomycin plus 6-DMAP, 85(98.8%) of 86 treated oocytes extruded the second polar bodies, with the entire chromatin complements outside ooplasm. However when the oocytes were restored during subsequent incubation in the drug-free medium, the cytoplasts regain their full capacity for parthenogenetic activation and nuclear remodelling. 3. The cleavage rate and the in vitro developmental rate to blastocyst were not significantly different in the oocytes activated by ionomycin plus 6-DMAP treatment(91.2 and 45.6%) or electrical stimulation(89.6 and 34.3%).

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