Effect of Duration Treated on Reproductive Performance in Holstein Cows Treated with Progesterone with and without Estradiol

인공수정 후 외인성 Progesterone과 Estradiol 병용 및 Progesterone 단독 투여 기간이 젖소의 번식 성적에 미치는 영향

  • Baek, K.S. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Lee, W.S. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Park, S.B. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Park, S.J. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Kim, H.S. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Lee, H.J. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Ki, K.S. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Kang, S.J. (Dairy Science Division, National Institute of Animal Science, R.D.A.) ;
  • Ahn, B.S. (Dairy Science Division, National Institute of Animal Science, R.D.A.)
  • 백광수 (농촌진흥청 축산과학원 낙농과) ;
  • 이왕식 (농촌진흥청 축산과학원 낙농과) ;
  • 박수봉 (농촌진흥청 축산과학원 낙농과) ;
  • 박성재 (농촌진흥청 축산과학원 낙농과) ;
  • 김현섭 (농촌진흥청 축산과학원 낙농과) ;
  • 이현준 (농촌진흥청 축산과학원 낙농과) ;
  • 기광석 (농촌진흥청 축산과학원 낙농과) ;
  • 강석진 (농촌진흥청 축산과학원 낙농과) ;
  • 안병석 (농촌진흥청 축산과학원 낙농과)
  • Published : 2007.09.29

Abstract

This study was carried out to investigate the effects of hormones treated (progesterone, and combination of progesterone and estradiol) on the reproductive performance of dairy cattle. The intravaginal CIDR was inserted in the vagina of cow on day 14 (P-7, PE-7), 16 (P-5, PE-5) and 18 (P-3, PE-3) post-insemination to stimulate progesterone secretion with (PE) and without estradiol(P). The CIDR was removed on 7 (P-7, PE-7), 5 (P-5, PE-5) and 3 (P-3, PE-3) days after. The cows for control group were not treated with CIDR or hormones. Conception rate, the duration needed for conception after AI and the number of AI services needed for conception were measured. Conception rate in control, CIDR without estradiol (P-7, P-5 and P-3) and CIDR treated (PE-7, PE-5 and PE-3) cows were 15.8%, 40.0%, 31.5%, 28.6%, 62.5%, 50.0% and 0%, respectively. The days needed for conception after AI in control, P-7, P-5, p-3, PE-7, PE-5 and PE-3 were 64.9, 63.0, 59.1, 8.0, 0.0, 18.9 and 83.3 days, respectively. The days needed for conception in cows treated with CIDR (PE-7) has shown longer than control and PE-3 (p<0.05). The number of AI services needed for conception in control, CIDR (PE-7, PE-5 and PE-3) and CIDR without estradiol treated cows (P-7, P-5 and P-3) were 27, 2.3, 1.9, 1.3, 1.0, 1.7 and 2.8 times, respectively. The number of AI services needed for conception have shown significantly lower in PE-7 compared to control and PE-3.

본 연구는 젖소에 있어서 인공수정 후 외인성 progesterone과 estradiol을 병용 투여하거나 progesterone을 단독 투여하는 경우에 처리기간별 젖소의 번식 성적에 미치는 영향을 조사하기 위하여 대조군, CIDR에 estradiol 캡슐을 부착시킨 progesterone과 estradiol 병용 투여군(PE군) 및 CIDR에서 estradiol 캡슐을 제거한 progesterone 단독 투여군(P군)로 구분하여, 인공수정 후 14일째에 각 투여군에 따른 CIDR를 질내에 삽입하여 그 날로부터 7일째에 제거하였고(P-7), 5일구의 경우, 인공수정 후 16일째에 CIDR를 질내에 삽입하여 그 날로부터 5일째에 제거하였으며(P-5), 3일구의 경우, 인공수정 후 18일째에 CIDR를 질내에 삽입하여 그 날로부터 3일째에 제거하는 경우에(P-3) 첫 수정시 수태율, 인공수정 후 200일 동안 수태까지의 일수 및 수태당 종부 횟수를 조사하여 다음과 같은 결과를 얻었다. 1. P4군 및 P4+E2군에서 처리기간별 첫 수정시 수태율은 대조구의 경우 15.8%였고, P-7구, P-5구 및 P-3구의 경우, 각각 40.0%, 37.5% 및 28.6%였으며, PE-7구, PE-5구 및 PE-3구의 경우, 각각 62.5%, 50.0% 및 0%였다. 2. P4군 및 P4+E2군에서 처리 기간별 인공수정 후 수태까지의 일수는 대조구의 경우 64.9일이었고, P-7구, P-5구 및 P-3구의 경우, 각각 63.0일, 59.1일 및 8.0일이었으며, PE-7구, PE-5구 및 PE-3구의 경우, 각각 0.0일, 18.9일 및 83.3일로 PE-7구가 대조구 및 PE-3구에 비하여 유의적(p<0.05)으로 단축되는 경향을 나타내었다. 3. P4군 및 P4+E2군에서 처리 기간별 수태당 종부 횟수는 대조구의 경우 2.7회였고, P-7구, P-5구 및 P-3구의 경우, 각각 2.3회, 1.9회 및 1.3회였으며, PE-7구, PE-5구 및 PE-3구의 경우, 각각 1.0회, 1.7회 및 2.8회로 PE-7구가 대조구 및 PE-3구에 비하여 유의적(p<0.05)으로 감소는 경향을 나타내었다.

Keywords

References

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