Reproductive and Developmental Biology

  • 제37권1호
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  • Pages.29-33
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  • 2013
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  • 1738-2432(pISSN)
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  • 2288-0151(eISSN)
한국동물번식학회 (The Korean Society of Animal Reproduction)
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젖소 미경산우의 발정동기화 처리 시 번식호르몬 변화

Changes in Concentrations of Reproductive Hormones during Estrus Synchronization in Dairy Heifers

  • 최창용 (농촌진흥청 국립축산과학원) ;
  • 허태영 (농촌진흥청 국립축산과학원) ;
  • 정영훈 (농촌진흥청 국립축산과학원) ;
  • 조용일 (농촌진흥청 국립축산과학원) ;
  • 백광수 (농촌진흥청 국립축산과학원) ;
  • 정연섭 (농촌진흥청 국립축산과학원) ;
  • 한태석 (농촌진흥청 국립축산과학원) ;
  • 이경석 (농촌진흥청 국립축산과학원) ;
  • 권응기 (농촌진흥청 국립축산과학원) ;
  • 강다원 (경상대학교 의학전문대학원 생리학교실.건강과학연구원) ;
  • 손준규 (농촌진흥청 국립축산과학원)
  • 투고 : 2013.03.07
  • 심사 : 2013.03.14
  • 발행 : 2013.03.31
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초록

The objective of this work was to analyze the concentrations of progesterone (P4) and estrogen (E2) hormones changed during estrus synchronization in dairy heifers. Estrus synchronization was carried out with CIDR$^{(R)}$ (Controlled Intravaginal Drug Release) devices. Corpus luteum (CL) was classified into three grades based on its size and palpable characteristics. The concentrations of P4 and E2 were measured by enzyme-amplified chemiluminescence. Serum P4 concentration was markedly low at the estrus stage (36 hrs after removal of CIDR) compared to other stages, while E2 concentration was kept high during estrus stage. The serum P4 concentration was highest in the CL classified into grade I. These results indicate that P4 concentration could be used as a criteria for determining recipients for artificial insemination or embryo transfer in dairy cattle.

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참고문헌

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