Effects of Equine Chorionic Gonadotropin on Progesterone-based Estrus Synchronization in Holstein Friesian x Brahman Recipient Cows

Authors

  • Jureerat Sumretprasong Faculty of Veterinary Medicine, Chiangmai University, Chiang Mai 50100, Thailand.
  • Anone Thuangsanthia Embryo Transfer Technology Research Center, Pakchong, Nakhon Ratchasima 30310, Thailand.
  • Narong Leangcharuen Embryo Transfer Technology Research Center, Pakchong, Nakhon Ratchasima 30310, Thailand.
  • Keerati Thijae Chiangmai Biotechnology and Artificial Insemination Research Center, Chiang Mai 50200, Thailand.
  • Sarakit Thawinprawat Dairy Cattle Research and Business Development Project, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani 12120, Thailand.

Keywords:

estrus synchronization, embryo transfer, recipient, crossbred, cattle

Abstract

Many estrous synchronization protocols have been developed to control the reproductive cycle in embryo transfer recipient cattle. Various breeds of cattle, such as Bos taurus, Bos indicus, or Bos taurus x Bos indicus respond to each protocol differently. The objective of this study was to seek an
appropriate protocol for estrus synchronization in Holstein Friesian x Brahman crossbred recipients. Two synchronization protocols were tested: group 1) progesterone and prostaglandin (PG); and group 2) progesterone and PG plus equine chorionic gonadotropin (eCG). The addition of eCG reduced the time between progesterone withdrawal and appearance of estrous behavior from 60.8 ± 2.8 (mean ± SEM) h in group 1 to 31.5 ± 2.5 h in group 2 and improved synchronization (range 22-69 h in group 2 compared to 34-106 h in group 1). Furthermore, cows treated with eCG had better quality corpora lutea and more cows from this group were selected as recipients (62.8% versus 48%). The protocol using progesterone and PG plus 200 IU eCG in these crossbred cattle was more cost effective than the conventional protocol using progesterone and PG.

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Published

2010-04-30

How to Cite

Jureerat Sumretprasong, Anone Thuangsanthia, Narong Leangcharuen, Keerati Thijae, and Sarakit Thawinprawat. 2010. “Effects of Equine Chorionic Gonadotropin on Progesterone-Based Estrus Synchronization in Holstein Friesian X Brahman Recipient Cows”. Agriculture and Natural Resources 44 (2). Bangkok, Thailand:196-201. https://li01.tci-thaijo.org/index.php/anres/article/view/244906.

Issue

Vol. 44 No. 2 (2010): March-April

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.