Journal of Embryo Transfer (한국수정란이식학회지)

The Korean Society of Embryo Transfer (한국수정란이식학회)
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Effect of Various Factors on Viability of Calves Derived from Embryos Produced In Vitro

체외수정란에서 유래한 송아지의 생존에 미치는 각종 요인들

  • Park Y. S. (Kyongbuk Livestock Research Institue) ;
  • Park H. D. (Division of Life Food and Biotech, Daegu University)
  • 박용수 (경상북도 축산기술연구소) ;
  • 박흠대 (대구대학교 식품생명공학부)
  • Published : 2005.08.01
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Abstract

This study was conducted to investigate the effects of various factors such as recipient parity, delivery season, offspring number, pregnancy period, delivery type, midwifery type and dystocia, on the viability of calves derived from embryos produced in vitro. There was no difference in the abnormality of calves among treatments ($0\~25\%$, respectively). The incidence of a disease was significantly higher in delivered by multiparous $(40\%)$ than nulliparous$(9.9\%)$, in eutocia than dystocia group, in delivered on spring $(20.4\%)$ and winter $(22.7\%)$ than summer$(4.3\%)$ and autumn $(0\%)$, in single offspring $(18.4\%)$ than twin offsprings $(6.7\%)$, and in eutocia group $(17\%)$ than dystocia $(2.7\%)$, respectively (p<0.05). The rate of mortality was significantly higher when transferred into mulliparous $(22.3\%)$ than multiparous$(0\%)$, when were delivered within 270 day $(53.3\%)$ than over 270 day $(14.3\~16.1\%)$, when were dystocia $(41.7\%)$ than eutocia$(14.1\%)$ group, when were induced delivery $(44.4\%)$ than self-delivery $(18.1\%)$, when were non-midwifery $(34\%)$ than midwifery$(10.8\%)$, and when delayed midwifery $(31.6\%)$ than earlier midwifery$(11.5\%)$, respectively (p<0.05). The present study suggested that the proper treatment of parturition may be increased the viability of calves derived from in vitro.

본 연구는 체외수정란에서 유래한 한우 송아지의 생존에 미치는 각종 요인들에 대하여 분석하여 체외수정란을 이용한 수정란 이식과 송아지의 효율성을 향상시키고자 실시하였다. 분만된 송아지의 기형율은 전 시험군에서 비슷한 경향이었다$(0\~25\%)$. 질병 발생율은 임신 기간, 분만 유도, 분만처치 방법과 형태 및 난산 처리 방법에 따른 차이가 없었다. 그러나 경산우$(40\%)$가 미경산우$(9.9\%)$, 봄과 겨울(20.4 및 $22.7\%$)이 여름과 가을(4.3 및 $0\%$), 단태$(15.4\%)$가 쌍태$(6.7\%)$ 및 정상 분만$(17\%)$이 난산$(2.7\%)$에 비하여 질병 발생율이 유의하게 높았다(p<0.05). 한편 폐사율은 분만 계절, 산자 수 및 난산 처치법에 따른 차이가 없었다. 하지만 미경산우$(22.3\%)$가 경산우$(0\%)$, 임신기간 270일 미만$(53.3\%)$이 271일 이상$(14.3\~16.1\%)$, 난산군$(41.7\%)$이 정상군$(14.1\%)$, 유도분만군$(44.4\%)$이 정상군$(18.1\%)$, 분만 미처치군$(34\%)$이 처치군$(10.8\%)$ 및 분만 처치 지연군$(31.6\%)$이 정상군$(11.5\%)$에 비하여 폐사율이 유의하게 높았다.(p<0.05). 본 연구를 통하여 체외수정란이 이식된 수란우의 분만이 적절하게 통제되어야만 송아지의 생존율을 높일 수 있을 것으로 사료된다.

Keywords

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