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腹腔内視鏡を用いためん羊の受精卵(胚)移植成績

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(32) k  MERMILLOD @0 >. cde= Bw¬{}ƒB5 ". , OKADA, A., T. ANDOH, Y. MIZOUCHI, K. YOSHII, N. ISHIDA and Y. FUKUI, J. Reprod. Dev., .1 : ,1/ῌ ,2+. ,**+. - !  V "# In : ῌ$%

(33).  &'(  ! ) pp. 3.ῌ+,1 *+,-. > +0῍ -ῌ+3  89:`H3 9   > ,1.-῍ 3 ῌ --  ¼½¡~>{H. and Y. FUKUI, J. Reprod. Dev., ./ : -*1ῌ-+-.. +333..

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(36) b[. OKADA, M., N. ISHIDA, T. OGISO, R. ITAGAKI, D. ISHIKAWA. Kš› 9:`H5

(37) . ῍. ./012 *+ ,**.. . OKADA, A., K. YOSHII, Y. MIZUOCHI, T. ANDOH, S.. ῎ 3 ῎.

(38) .2 : -*3ῌ-+,. ,**,.. JOUJOU, S. WACHI, M. TOGAWA, N. ISHIDA, M. ASADA and Y. FUKUI, J. Reprod. Dev., .2 : +23ῌ. 0ῌ. +3/. ,**,.. NIE,. /ῌ OKADA, A., S. WACHI, K. IIDA, S. JOUJOU, M. TOGAWA,. MERMILLOD, P., G. BARIL, J.F. BECKERS and Y. COG+.th Inter. Congr. on Anim. Reprod., , : ++1.. ,***. (Abstract). M. ASADA and Y. FUKUI, J. Reprod. Dev.,. Summary The present study was investigated the fertility of 1. ewes after embryo transfer of fresh, frozen-thawed and vitrified ovine embryos collected on 0ῌ1 days after artificial insemination with fresh-diluted or frozen-thawed ram semen by the simple superovulation treatment during the period of +332 to ,**3. There was no significant di#erences among the pregnant and lambing rates after transfer of fresh (.*.3 and -0..ῌ), frozen-thawed (,0.- and ,0.-ῌ) and vitrified (,1.- and ,1.-ῌ) embryos. However, the twining rate (--.-ῌ) using vitrified embryos was significantly (P῍*.*,/) lower than that (21./ῌ) of fresh embryos. From a total of 1. ewes transferred embryos, ,, ewes lambed (-*.3ῌ) with 0+.3ῌ (+-/,, heads) of twining rate. Although the present fertility were still low (,1ῌ-0ῌ), the results indicated that lamb production was possible by transfer of frozen-thawed and vitrified ovine embryos using laparoscope.. ῍ 4 ῍.

(39)

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