JARB Journal of Animal Reproduction and Biotehnology

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eISSN: 2671-4663

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Journal of Embryo Transfer 2004; 19(3): 239-244

Published online December 31, 2004

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

한우 체내, 체외 및 복제 수정란이 이식된 수란우의 임신과 분만 및 산자의 생존

박용수

경상북도축산기술연구소

Abstract

The present study was to investigate the pregnancy rate, gestation length and abortion rate of the recipients which transferred blastocysts produced by in-vivo collection, in-vitro fertilization (IVF) and nuclear transfer (NT). In addition, we investigate the birth weight and survival rate of the calves derived from the same methods. The pregnancy rate was 56.3% in-vivo blastocysts, significantly higher than 19.4% in NT blastocysts (p<0.05) but not significantly different from 30.0% in IVF blastocysts. The abortion rate and the gestation length did not differ among the treatment groups (abortion rate: 0, 22.2 and 16.7% respectively; gestation length: 278.8, 289.4 and 281.4 days respectively). The mean birth weight was significantly higher in NT calves (39.9kg) than in-vivo calves (25.5kg p<0.05). Recipients of in-vivo blastocysts (n=9) had all normal delivery and all of their calves survived on the 60$^{th}$ day from the birth. Recipients of IVF blastocysts (n=7) had all normal delivery but one of their calves died on the 48$^{th}$ day from the birth. Among recipients of NT blastocysts (n=5), three had normal delivery and two had Caesarean section. Among calves born through normal delivery (n=3) two died just after delivery but those born through Caesarean section all survived on the 60th day from the birth.

Keywords: bovine, embryo transfer, pregnancy, parturition

Article

Journal of Embryo Transfer 2004; 19(3): 239-244

Published online December 31, 2004

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

한우 체내, 체외 및 복제 수정란이 이식된 수란우의 임신과 분만 및 산자의 생존

박용수

경상북도축산기술연구소

한우 체내, 체외 및 복제 수정란이 이식된 수란우의 임신과 분만 및 산자의 생존

박용수

경상북도축산기술연구소

Abstract

The present study was to investigate the pregnancy rate, gestation length and abortion rate of the recipients which transferred blastocysts produced by in-vivo collection, in-vitro fertilization (IVF) and nuclear transfer (NT). In addition, we investigate the birth weight and survival rate of the calves derived from the same methods. The pregnancy rate was 56.3% in-vivo blastocysts, significantly higher than 19.4% in NT blastocysts (p<0.05) but not significantly different from 30.0% in IVF blastocysts. The abortion rate and the gestation length did not differ among the treatment groups (abortion rate: 0, 22.2 and 16.7% respectively; gestation length: 278.8, 289.4 and 281.4 days respectively). The mean birth weight was significantly higher in NT calves (39.9kg) than in-vivo calves (25.5kg p<0.05). Recipients of in-vivo blastocysts (n=9) had all normal delivery and all of their calves survived on the 60$^{th}$ day from the birth. Recipients of IVF blastocysts (n=7) had all normal delivery but one of their calves died on the 48$^{th}$ day from the birth. Among recipients of NT blastocysts (n=5), three had normal delivery and two had Caesarean section. Among calves born through normal delivery (n=3) two died just after delivery but those born through Caesarean section all survived on the 60th day from the birth.

Keywords: bovine, embryo transfer, pregnancy, parturition

JARB Journal of Animal Reproduction and Biotehnology

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OPEN ACCESS pISSN: 2671-4639
eISSN: 2671-4663