Hormonal treatment and estrus synchronization in cows: A mini-review

Perfect detection of estrus is crucial for good husbandry practice of cow. Estrus synchronization is the alternative strategy to bypass the critical problem of estrus detection. Synchronization program allows fixed timed artificial inseminations (FTAI) to evade the estrus detection. The most recentl...

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Main Authors: Ashit Kumar Paul, Ton Yoisungnern, Napolean Bunaparte
Format: Article
Language:English
Published: Network for the Veterinarians of Bangladesh 2015-03-01
Series:Journal of Advanced Veterinary and Animal Research
Subjects:
Online Access:http://www.scopemed.org/fulltextpdf.php?mno=159269
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author Ashit Kumar Paul
Ton Yoisungnern
Napolean Bunaparte
author_facet Ashit Kumar Paul
Ton Yoisungnern
Napolean Bunaparte
author_sort Ashit Kumar Paul
collection DOAJ
description Perfect detection of estrus is crucial for good husbandry practice of cow. Estrus synchronization is the alternative strategy to bypass the critical problem of estrus detection. Synchronization program allows fixed timed artificial inseminations (FTAI) to evade the estrus detection. The most recently developed programs include protocols for re-synchronization following first or subsequent inseminations. These re-synchronization protocols may involve selected forms of hormonal intervention during the diestrus and pro-estrus periods following FTAI, or following pregnancy diagnosis by ultrasound from 28 days after FTAI. Almost all programs involve strategically timed treatment of prostaglandin F2α (PGF) and gonadotropin releasing hormone (GnRH). Treatment of an estradiol ester and progesterone supplementation per vaginum may be included in some programs. The basic program is the “Ovsynch” regimen. This mini-review discusses a number of key points related to external hormonal stimulation on ovarian follicular wave to improve pregnancy rate following timed AI.
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spelling doaj.art-efdc2f3748b6486f9d7f1158f9d114632022-12-21T19:28:27ZengNetwork for the Veterinarians of BangladeshJournal of Advanced Veterinary and Animal Research2311-77102311-77102015-03-0121101710.5455/javar.2015.b45Hormonal treatment and estrus synchronization in cows: A mini-reviewAshit Kumar Paul0Ton Yoisungnern1Napolean Bunaparte2School of Biotechnology, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandSchool of Biotechnology, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandSchool of Biotechnology, Suranaree University of Technology, Nakhon Ratchasima 30000, ThailandPerfect detection of estrus is crucial for good husbandry practice of cow. Estrus synchronization is the alternative strategy to bypass the critical problem of estrus detection. Synchronization program allows fixed timed artificial inseminations (FTAI) to evade the estrus detection. The most recently developed programs include protocols for re-synchronization following first or subsequent inseminations. These re-synchronization protocols may involve selected forms of hormonal intervention during the diestrus and pro-estrus periods following FTAI, or following pregnancy diagnosis by ultrasound from 28 days after FTAI. Almost all programs involve strategically timed treatment of prostaglandin F2α (PGF) and gonadotropin releasing hormone (GnRH). Treatment of an estradiol ester and progesterone supplementation per vaginum may be included in some programs. The basic program is the “Ovsynch” regimen. This mini-review discusses a number of key points related to external hormonal stimulation on ovarian follicular wave to improve pregnancy rate following timed AI.http://www.scopemed.org/fulltextpdf.php?mno=159269Dairy cowsEstrusSynchronizationTimed AI
spellingShingle Ashit Kumar Paul
Ton Yoisungnern
Napolean Bunaparte
Hormonal treatment and estrus synchronization in cows: A mini-review
Journal of Advanced Veterinary and Animal Research
Dairy cows
Estrus
Synchronization
Timed AI
title Hormonal treatment and estrus synchronization in cows: A mini-review
title_full Hormonal treatment and estrus synchronization in cows: A mini-review
title_fullStr Hormonal treatment and estrus synchronization in cows: A mini-review
title_full_unstemmed Hormonal treatment and estrus synchronization in cows: A mini-review
title_short Hormonal treatment and estrus synchronization in cows: A mini-review
title_sort hormonal treatment and estrus synchronization in cows a mini review
topic Dairy cows
Estrus
Synchronization
Timed AI
url http://www.scopemed.org/fulltextpdf.php?mno=159269
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