대한수의학회지 (Korean Journal of Veterinary Research)

  • 제63권2호
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  • Pages.14.1-14.4
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  • 2023
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  • 2466-1384(pISSN)
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  • 2466-1392(eISSN)
대한수의학회 (The Korean Society of Veterinary Science)
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Effect of resynchronization programs according to the ovarian status on pregnancy outcomes in dairy cows

  • Jaekwan Jeong (College of Veterinary Medicine, Chungbuk National University) ;
  • Uihyung Kim (Hanwoo Research Institute, National Institute of Animal Science, Rural Development Administration) ;
  • Illhwa Kim (College of Veterinary Medicine, Chungbuk National University)
  • 투고 : 2023.03.14
  • 심사 : 2023.04.11
  • 발행 : 2023.06.30
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초록

This study evaluated the effect of resynchronization programs on pregnancies in dairy cows. Of 1,342 cows confirmed not pregnant after their first artificial insemination (AI), those with a corpus luteum (CL) were resynchronized using Ovsynch or PG-GnRH-Ovsynch and those without a CL were resynchronized using GnRH-Ovsynch or modified Double-Ovsynch. There were no differences (p > 0.05) in the pregnancies per AI either between the Ovsynch (31.3%) and PG-GnRH-Ovsynch (34.0%) or between the GnRH-Ovsynch (38.7%) and modified Double-Ovsynch (39.5%). In conclusion, Ovsynch and GnRH-Ovsynch programs could be preferred to resynchronize cows with and without a CL, respectively, from the perspective of reducing costs and labor.

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참고문헌

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