Earticle

초록

영어

A study was conducted to investigate the efficiency of recipient for Embryo Transfer (ET) in Holstein Heifers. A total of 193 heifers (Age 14-20 months and body weight, 250-400 Kg) was assigned in 2 groups (natural ovulation cycle group and Hormone-induced ovulation synchronization group) based on the development of corpus luteum (CL) and uterus where 28.49% (55/193) heifers were in normal estrous. The ET technique was applied in both of the groups to transfer the embryo in the recipients and evaluated their efficiency. In vivo frozen embryos were used for ET at the blastocyst stage. Results showed that according to recipient preparation method the conception rates were 22.72% (10/44) and 40.26% (60/149) in hormone-induced ovulation synchronization group and natural ovulation cycle group, respectively. The pregnancy rate of heifers was significantly higher (p<0.05) during the first time ET compared to repeat ET; however, recipient showed no significant difference in CL development in both side. The conception rate were 31.03% (9/29), 37.75% (57/151) and 15.38% (2/13) at day 6, 7 and 8, respectively after the CL development of the heifers. The conception rate was significantly higher (p<0.05) in the right side compared to left side of the CL development. In addition, during ET anesthesia group and non anesthesia group conception rate of the recipient were 27.63% (21/76) and 41.88% (49/117), respectively.

목차

ABSTRACT
  Ι. 서론
 Ⅱ. 재료 및 방법
  1. 공시축
  2. 수정란 이식
  3. 임신 감정 및 분만 자축관리
  4. 자료 분석
 Ⅲ. 결과
 Ⅳ. 고찰
 Ⅴ. 요약
 Ⅵ. 인용문헌

저자

• 박성재 [ Sung Jai Park | 농촌진흥청 국립축산과학원 ] Corresponding Author
• 백광수 [ Kwang Soo Baek | 농촌진흥청 국립축산과학원 ]
• 임현주 [ Hyun Joo Lim | 농촌진흥청 국립축산과학원 ]
• 허태영 [ Tai Young Hur | 농촌진흥청 국립축산과학원 ]
• 기광석 [ Kwang Seok Ki | 농촌진흥청 국립축산과학원 ]
• 이경석 [ Kyung Suk Lee | 농촌진흥청 국립축산과학원 ]
• 이현준 [ Hyun June Lee | 농촌진흥청 국립축산과학원 ]
• 김남형 [ Nam Hyung Kim | 충북대학교 농업생명환경대학 ]
• 김흥률 [ Hung Rul Kim | 농협중앙회 ]
• 장원경 [ Won Kyong Chang | 농촌진흥청 국립축산과학원 ]
• 권응기 [ Eung Gi Kwon | 농촌진흥청 국립축산과학원 ]

참고문헌