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논문 기본 정보

자료유형
학술저널
저자정보
이효종 (경상대학교) 강태영 (경상대학교) 조성근 (경상대학교) 박준규 (경상대학교) 손우진 (경상대학교) 최민철 (경상대학교) 최상용 (경상대학교)
저널정보
한국동물번식학회 한국수정란이식학회지 한국수정란이식학회지 제12권 제2호
발행연도
1997.1
수록면
195 - 202 (8page)

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The present study was carried out to evaluate the effect of superovulation treatments on ovarian responses, oocyte recovery rates and grades of collected oocytes using an ultrasound-guided transvaginal approach in Korean native cows. Superovulation in cows was induced with two different regimenes: 1) FSH-decreasing dose(n=8): the cows were received twice per day for three days of the total dose of 400 mg of FSH-p, 2) FSH-single dose(n=9): the cows were administrated a single dose of 400 mg of FSH-p in 25% PVP. The Observation of visible follicles and collection of oocytes were performed 12 hours following the last FSH in FSH-decreasing dose group and 48 hours after the FSH-single dose injection. All visible follicles larger than 6 mm were punctured and aspirated with a 6.5 MHz convex-array ultrasound transducer designed for intravaginal use. The mean number of visible follicles(> 6 mm) was significantly(P<0.05) higher in the FSH-decreasing dose treatment (22.811.9) and FSH-single dose treatment (20.612.0) groups than the non-treatment group(7.0$\pm$8). The mean recovery rate of oocytes was not significantly(P<0.05) different between the treatment and control groups, but the mean number of collected oocytes was significantly(P<0.05) higher in the FSH-decreasing dose treatment( 12.611.5) and FSH-single dose treatment (11.813.6) groups than the non-treatment group(3.7$\pm$0.5). In conclusion, the FSH-single dose treatment at superovulation in cows for ultrasound-guided aspiration might increase the number of aspiratable follicles and the recovery rate of follicular oocytes as the FSH-decreasing dose treatment.

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