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논문 기본 정보

자료유형
학술저널
저자정보
최화식 (서울대학교 농과대학 축산학과) 임경순 (서울대학교 농과대학 축산학과) 이용빈 (서울대학교 농과대학 축산학과)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제11권 제3호
발행연도
1987.1
수록면
223 - 229 (7page)

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초록· 키워드

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This study was carried out to investigate effects of superovulation and time of embryo recovery on ovarian response, recovery rate and developmental stage of embryo in donor and effects of methods of synchronization, number of corpus luteum (CL), stage of embryo and time of embryo transfer on ovarian response, conception rate and number of newborn in recipients which were transferred on 2.5, 3.5 and 4.5 days after synchronization. The results obtained are as follows; 1. The ovulation point of superovulated donor on 2.5, 3.5 and 4.5 days after copulation was 23.3, 35.3 and 23.3, respectively. The number of embryos recovered from the donors on 2.5, 3.5 and 4.5 days after copulation was 23.3, 25.8 and 19.8, respectively. The ovulation point and number of embryos recovered on 3.5 days were greater than those of 2.5 and 4.5 days. Among 232 embryos recovered on 3.5 days after copulation, 84 were blastocyst and 62 were hatching blastocyst. 2. The number of CL in recipients on 2.5, 3.5 and 4.5 days after synchronization was 3.2, 2.9 and 3.8 and showed no difference among the days. 3. When the number of CL was 0, 2-3, 4-6 and more than 7 the pregnancy raet of recipients was 0, 37.5, 66.7 and 75%, respectively. The pregnancy rate of recipients increased as the number of CL increased. 4. The pregnancy rate of transferred morula, blastocyst and hatching blastocyst was 32.0, 37.2 and 24.7%, respectively. The blastocyst nhowed highest pregnancy rate. 5. When the recipients were synchronized by HCG, the number of CL, unruptured follicle, hemorrhage, pregnancy rate and number of young were 5.5, 6.4, 3.3, 72.7% and 3.3, whereas that of GnRH were 2.3, 4.4, 2.8, 25.0% and 1.2, respectively. Recipients synchronized by HCG showed better results than GnRH. 6. When the embryos were collected on 2.5 days after copulation and transferred to the synchromized recipients, the pregnancy rate and the number of young born was 62.58% and 3.1, respectively. Those of 3.5 and 4.5 days after copulation was 57.1% and 1.3, and 37.5% and 1.6. The 2.5 days showed higher pregnancy rate and number of young born than 3.5 and 4.5 days.

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