The requirement of GnRH at the beginning of the five-day CO-Synch + controlled internal drug release protocol in beef heifers1
Author:
Affiliation:
1. Department of Animal Sciences, The Ohio State University, Columbus 43210
2. North Central Research and Outreach Center, University of Minnesota, Grand Rapids 55744
3. Department of Animal Science, University of Wyoming, Laramie 82071
Publisher
Oxford University Press (OUP)
Subject
Genetics,Animal Science and Zoology,General Medicine,Food Science
Link
http://academic.oup.com/jas/article-pdf/92/9/4198/23876309/4198.pdf
Reference21 articles.
1. Gonadotropin-releasing hormone-induced ovulation and luteinizing hormone release in beef heifers: Effect of day of the cycle;Atkins;J. Anim. Sci.,2008
2. Decreasing the interval between GnRH and PGF2α from 7 to 5 days and lengthening proestrus increases timed-AI pregnancy rates in beef cows;Bridges;Theriogenology,2008
3. Estradiol benzoate delays new follicular wave emergence in a dose-dependent manner after ablation of the dominant follicle in cattle;Burke;Theriogenology,2003
4. Effect of calf removal on pregnancy rates of cows synchronized with the Ovsynch or Co-Synch protocol;Geary;J. Anim. Sci.,1998
5. Artificial insemination at 56 h after intravaginal progesterone device removal improved AI pregnancy rate in beef heifers synchronized with five-day CO-Synch + controlled internal drug release (CIDR) protocol;Kasimanickam;Theriogenology,2012
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3. Estrous activity and pregnancy outcomes in Holstein heifers subjected to a progesterone based 5-d CO-Synch protocol with or without administration of initial GnRH;Theriogenology;2023-05
4. Effects of two protocols of ovulation synchronization on corpus luteum size and blood flow, progesterone concentration, and pregnancy rate in beef heifers;Animal Reproduction Science;2023-04
5. Sincronización del estro y ovulación en hembras bovinas de razas cárnicas. Bases endocrinas y protocolos usados;Abanico Veterinario;2023-01-01
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