Journal of Embryo Transfer (한국수정란이식학회지)

The Korean Society of Embryo Transfer (한국수정란이식학회)
권호 표지

Factors Effecting on Artificial Insemination in Multi-Parturition Cattle

다산차 젖소에 있어서 인공수정 관련 요인

  • 정경용 (농촌진흥청 국립축산과학원) ;
  • 박성재 (농촌진흥청 국립축산과학원) ;
  • 김남형 (충북대학교 농업생명환경대학) ;
  • 백광수 (농촌진흥청 국립축산과학원) ;
  • 전병순 (농촌진흥청 국립축산과학원) ;
  • 임현주 (농촌진흥청 국립축산과학원) ;
  • 허태영 (농촌진흥청 국립축산과학원) ;
  • 기광석 (농촌진흥청 국립축산과학원) ;
  • 이경석 (농촌진흥청 국립축산과학원) ;
  • 강성용 (농촌진흥청 국립축산과학원) ;
  • 이현준 (농촌진흥청 국립축산과학원) ;
  • 장원경 (농촌진흥청 국립축산과학원) ;
  • 김현섭 (농촌진흥청 국립축산과학원)
  • Received : 2010.08.13
  • Accepted : 2010.08.27
  • Published : 2010.09.30
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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

References

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