Abstract
Lactating, nonpregnant (with a corpus luteum) Holsteins were given 100 ug GnRH (n = 12) or saline (n = 12) and 500 ug cloprostenol 6 d later. Following luteolysis, ovulation occurred 10.1 +/- 0.2 d (range, 9-12 d) after GnRH and 8.6 +/- 1.0 d (range, 3-12 d) after saline (differences between groups: means, P > 0.05; variability, P < 0.001). Treatment with GnRH and cloprostenol resulted in a relatively synchronous ovulation.
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Selected References
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- Grazul-Bilska A. T., Reynolds L. P., Slanger W. D., Redmer D. A. Production of heparin-binding angiogenic factor(s) by bovine corpora lutea during pregnancy. J Anim Sci. 1992 Jan;70(1):254–262. doi: 10.2527/1992.701254x. [DOI] [PubMed] [Google Scholar]
- Pursley J. R., Mee M. O., Wiltbank M. C. Synchronization of ovulation in dairy cows using PGF2alpha and GnRH. Theriogenology. 1995 Nov;44(7):915–923. doi: 10.1016/0093-691x(95)00279-h. [DOI] [PubMed] [Google Scholar]
- Twagiramungu H., Guilbault L. A., Dufour J. J. Synchronization of ovarian follicular waves with a gonadotropin-releasing hormone agonist to increase the precision of estrus in cattle: a review. J Anim Sci. 1995 Oct;73(10):3141–3151. doi: 10.2527/1995.73103141x. [DOI] [PubMed] [Google Scholar]
- Twagiramungu H., Guilbault L. A., Proulx J., Villeneuve P., Dufour J. J. Influence of an agonist of gonadotropin-releasing hormone (buserelin) on estrus synchronization and fertility in beef cows. J Anim Sci. 1992 Jun;70(6):1904–1910. doi: 10.2527/1992.7061904x. [DOI] [PubMed] [Google Scholar]