Effect of administration of human chorionic gonadotropin after artificial insemination on concentrations of progesterone and conception rates in beef heifers

Journal of Animal Science

Volumn 83, Issue 6, 2005, Pages 1403-1405

  Funston, R N ^a,d   Lipsey, R J ^b   Geary, T W ^c   Roberts, A J ^c  

^a UNIVERSITY OF NEBRASKA LINCOLN   (United States)

^b American Simmental Association   (United States)

^c AGRICULTURAL RESEARCH SERVICE   (United States)

^d NONE   (United States)

Author keywords

Beef Heifers; Human Chorionic Gonadotropin; Progesterone

Indexed keywords

EID: 33646065353     PISSN: 00218812     EISSN: None     Source Type: Journal    
DOI: 10.2527/2005.8361403x     Document Type: Article

References (10)

1. Binelli, M., W. W. Thatcher, R. Mattos, and P. S. Baruselli. 2001. Antiluteolytic strategies to improve fertility in cattle. Theriogenology 56:1451-1463.
2. Breuel, K. F., J. C. Spitzer, and D. M. Henricks. 1989. Systemic progesterone concentration following human chorionic gonadotropin administration at various times during the estrous cycle in beef heifers. J. Anim. Sci. 67:1564-1572.
3. Mann, G. E., G. E. Lamming, R. S. Robinson, and D. C. Wathes. 1999. The regulation of interferon-τ production and uterine hormone receptors during early pregnancy. J. Reprod. Fertil. 54(Suppl.):317-328.
4. Perry, G. A., T. W. Geary, M. C. Lucy, and M. F. Smith. 2002. Effect of follicle size at time of GnRH-induced ovulation on luteal function and fertility. Proc. West. Sec. Am. Soc. Anim. Sci. 53:45-48.
5. Roberts, A. J., and T. G. Jenkins. 2002. Effects of varying energy intake and sire breed on duration of postpartum anestrus, IGF-I, and GH in mature crossbred cows. Proc. West. Sec. Amer. Soc. Anim. Sci. 53:454-456.
6. Robinson, N. A., K. E. Leslie, and J. S. Walton. 1989. Effect of treatment with progesterone on pregnancy rate and plasma concentrations of progesterone in Holstein cows. J. Dairy Sci. 72:202-207.
7. Santos, J. E. P., W. W. Thatcher, L. Pool, and M. W. Overton. 2001. Effect of human chorionic gonadotropin on luteal function and reproductive performance of high-producing lactating Holstein dairy cows. J. Anim. Sci. 79:2881-2894.
8. Schmitt, E. J. P., C. M. Barros, P. A. Fields, M. J. Fields, T. Diaz, J. M. Kluge, and W. W. Thatcher. 1996. A cellular and endocrine characterization of the original and induced corpus luteum after administration of a gonadotropin-releasing hormone agonist or human chorionic gonadotropin on day five of the estrous cycle. J. Anim. Sci. 74:1915-1929.
9. Van Cleef, J. M., M. Drost, and W. W. Thatcher. 1991. Effects of postinsemination progesterone supplementation on fertility and subsequent estrous responses of dairy heifers. Theriogenology 36:795-807.
10. Wiebold, J. L. 1988. Embryonic mortality and the uterine environment in first service lactating dairy cows. J. Reprod. Fertil. 84:393-399.