JARB Journal of Animal Reproduction and Biotehnology

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

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Journal of Embryo Transfer 2010; 25(3): 155-159

Published online September 30, 2010

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

다산차 젖소에 있어서 인공수정 관련 요인

정경용, 박성재, 김남형, 백광수, 전병순, 임현주, 허태영, 기광석, 이경석, 강성용, 이현준, 장원경, 김현섭

농촌진흥청 국립축산과학원

Abstract

The objective of this study was to determine physiological and mechanical factors effecting on the pregnancy rates following artificial insemination in dairy cattle. Estrus for artificial insemination of cows was checked whether the outflow of mucus from the elements was out flow or not. There were no significant difference of gestation rates with mucus release (31.76%) and without mucus release (24.03%). The pregnancy rates were 39.02% in 10~20mm of follicle size group and 27.08% (p<0.05) in 20~30mm diameter of the follicles. There were not different pregnancy rates between twice inseminated dairy cattle and more than 3 times inseminated cattle. The pregnancy rate was 28.57% under automatic milking system. In contrast, under artificial milking system pregnancy rate was 56.85%. Two systems significantly (p<0.05) were different. These results suggest that pregnancy rates were not effected by physiological system, but mechanical condition.

Keywords: dairy cattle, artificial insemination, pregnancy rates

Article

Journal of Embryo Transfer 2010; 25(3): 155-159

Published online September 30, 2010

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

다산차 젖소에 있어서 인공수정 관련 요인

정경용, 박성재, 김남형, 백광수, 전병순, 임현주, 허태영, 기광석, 이경석, 강성용, 이현준, 장원경, 김현섭

농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 충북대학교 농업생명환경대학, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원, 농촌진흥청 국립축산과학원

다산차 젖소에 있어서 인공수정 관련 요인

정경용, 박성재, 김남형, 백광수, 전병순, 임현주, 허태영, 기광석, 이경석, 강성용, 이현준, 장원경, 김현섭

농촌진흥청 국립축산과학원

Abstract

The objective of this study was to determine physiological and mechanical factors effecting on the pregnancy rates following artificial insemination in dairy cattle. Estrus for artificial insemination of cows was checked whether the outflow of mucus from the elements was out flow or not. There were no significant difference of gestation rates with mucus release (31.76%) and without mucus release (24.03%). The pregnancy rates were 39.02% in 10~20mm of follicle size group and 27.08% (p<0.05) in 20~30mm diameter of the follicles. There were not different pregnancy rates between twice inseminated dairy cattle and more than 3 times inseminated cattle. The pregnancy rate was 28.57% under automatic milking system. In contrast, under artificial milking system pregnancy rate was 56.85%. Two systems significantly (p<0.05) were different. These results suggest that pregnancy rates were not effected by physiological system, but mechanical condition.

Keywords: dairy cattle, artificial insemination, pregnancy rates