Optimizing ovulation to first GnRH improved outcomes to each hormonal injection of ovsynch in lactating dairy cows

Journal of Dairy Science

Volumn 89, Issue 9, 2006, Pages 3413-3424

  Bello, N M ^a   Steibel, J P ^a   Pursley, J R ^a  

^a MICHIGAN STATE UNIVERSITY   (United States)

Author keywords

Dairy cow; Gonadotropin releasing hormone; Ovsynch; Preovulatory follicle maturation

Indexed keywords

BOS TAURUS;

EID: 33748122157     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(06)72378-5     Document Type: Article

References (32)

1. Bleach, E. C., R. G. Glencross, and P. G. Knight. 2004. Association between ovarian follicle development and pregnancy rates in dairy cows undergoing spontaneous oestrous cycles. Reproduction 127:621-629.
2. Bridges, P. J., and J. E. Fortune. 2003. Characteristics of developing prolonged dominant follicles in cattle. Domest. Anim. Endocrinol. 25:199-214.
3. Burns, D. S., F. Jimenez-Krassel, J. L. Ireland, P. G. Knight, and J. J. Ireland. 2005. Numbers of antral follicles during follicular waves in cattle: Evidence for high variation among animals, very high repeatability in individuals, and an inverse association with serum follicle-stimulating hormone concentrations. Biol. Reprod. 73:54-62.
4. Cooperative Regional Research Project. 1996. Relationship of fertility to patterns of ovarian follicular development and associated hormonal profiles in dairy cows and heifers. J. Anim. Sci. 74:1943-1952.
5. Fonseca, F. A., J. H. Britt, B. T. McDaniel, J. C. Wilk, and A. H. Rakes. 1983. Reproductive traits of Holsteins and Jerseys. Effects of age, milk yield, and clinical abnormalities on involution of cervix and uterus, ovulation, estrous cycles, detection of estrus, conception rate, and days open. J. Dairy Sci. 66:1128-1147.
6. Ginther, O. J., J. P. Kastelic, and L. Knopf. 1989a. Composition and characteristics of follicular waves during the bovine estrous cycle. Anim. Reprod. Sci. 20:187-200.
7. Ginther, O. J., L. Knopf, and J. P. Kastelic. 1989b. Temporal associations among ovarian events in cattle during oestrous cycles with two and three follicular waves. J. Reprod. Fertil. 87:223-230.
8. Greenwald, G. S., and S. K. Roy. 1994. Follicular development and its control. Pages 629-724 in The Physiology of Reproduction. Vol. 1. 2nd ed. E. Knobil, and J. D. Neill, ed. Raven Press, New York, NY.
9. Ireland, J. J., M. Mihm, E. Austin, M. G. Diskin, and J. F. Roche. 2000. Historical perspective of turnover of dominant follicles during the bovine estrous cycle: Key concepts, studies, advancements, and terms. J. Dairy Sci. 83:1648-1658.
10. Ireland, J. J., and J. F. Roche. 1982. Development of antral follicles in cattle after prostaglandin-induced luteolysis: Changes in serum hormones, steroids in follicular fluid, and gonadotropin receptors. Endocrinology 111:2077-2086.
11. Lucy, M. C., T. L. Curran, R. J. Collier, and W. J. Cole. 1994. Extended function of the corpus luteum and earlier development of the second follicular wave in heifers treated with bovine somatotropin. Theriogenology 41:561-572.
12. Mihm, M., A. Baguisi, M. P. Boland, and J. F. Roche. 1994. Association between the duration of dominance of the ovulatory follicle and pregnancy rate in beef heifers. J. Reprod. Fertil. 102:123-130.
13. Moreira, F., R. L. de la Sota, T. Diaz, and W. W. Thatcher. 2000. Effect of day of the estrous cycle at the initiation of a timed artificial insemination protocol on reproductive responses in dairy heifers. J. Anim. Sci. 78:1568-1576.
14. NRC. 2001. Nutrient Requirements of Dairy Cattle. 7th ed. Natl. Acad. Sci., Washington, DC.
15. Navanukraw, C., D. A. Redmer, L. P. Reynolds, J. D. Kirsch, A. T. Grazul-Bilska, and P. M. Fricke. 2004. A modified presynchronization protocol improves fertility to timed artificial insemination in lactating dairy cows. J. Dairy Sci. 87:1551-1557.
16. Perry, G. A., M. F. Smith, M. C. Lucy, J. A. Green, T. E. Parks, M. D. MacNeil, A. J. Roberts, and T. W. Geary. 2005. Relationship between follicle size at insemination and pregnancy success. Proc. Natl. Acad. Sci. USA 102:5268-5273.
17. Peters, M. W., and J. R. Pursley. 2003. Timing of final GnRH of the Ovsynch protocol affects ovulatory follicle size, subsequent luteal function, and fertility in dairy cows. Theriogenology 60:1197-1204.
18. Prendiville, D. J., W. J. Enright, M. A. Crowe, M. Finnerty, N. Hynes, and J. F. Roche. 1995. Immunization of heifers against gonadotropin-releasing hormone: Antibody titers, ovarian function, body growth, and carcass characteristics. J. Anim. Sci. 73:2382-2389.
19. Pursley, J. R. 1996. Synchronization of ovulation in dairy cattle. PhD Thesis, University of Wisconsin, Madison.
20. Pursley, J. R., M. O. Mee, and M. C. Wiltbank. 1995. Synchronization of ovulation in dairy cows using PGF2alpha and GnRH. Theriogenology 44:915-923.
21. Pursley, J. R., M. C. Wiltbank, J. S. Stevenson, J. S. Ottobre, H. A. Garverick, and L. L. Anderson. 1997. Pregnancy rates per artificial insemination for cows and heifers inseminated at a synchronized ovulation or synchronized estrus. J. Dairy Sci. 80:295-300.
22. Revah, I., and W. R. Butler. 1996. Prolonged dominance of follicles and reduced viability of bovine oocytes. J. Reprod. Fertil. 106:39-47.
23. Ryan, M., M. Mihm, and J. F. Roche. 1998. Effect of GnRH given before or after dominance on gonadotrophin response and fate of that follicle wave in postpartum dairy cows. J. Reprod. Fertil. 21:28. (Abstr.)
24. Sartori, R., P. M. Fricke, J. C. Ferreira, O. J. Ginther, and M. C. Wiltbank. 2001. Follicular deviation and acquisition of ovulatory capacity in bovine follicles. Biol. Reprod. 65:1403-1409.
25. Sartori, R., J. M. Haughian, R. D. Shaver, G. J. Rosa, and M. C. Wiltbank. 2004. Comparison of ovarian function and circulating steroids in estrous cycles of Holstein heifers and lactating cows. J. Dairy Sci. 87:905-920.
26. Silcox, R. W., K. L. Powell, and T. E. Kiser. 1993. Ability of the dominant follicle to respond to exogenous GnRH administration is dependent on their stage of development. J. Anim. Sci. 71(Suppl. 1):513. (Abstr.)
27. Souza, A. H., A. Gumen, E. P. B. Silva, A. P. Cunha, J. N. Guenther, C. M. Peto, D. Z. Caraviello, and M. C. Wiltbank. 2005. Effect of estradiol-17beta supplementation before the last GnRH of the Ovsynch protocol on high producing dairy cows. J. Dairy Sci. 88(Suppl. 1):170. (Abstr.)
28. Thatcher, W. W., F. Moreira, S. M. Pancarci, J. A. Bartolome, and J. E. Santos. 2002. Strategies to optimize reproductive efficiency by regulation of ovarian function. Domest. Anim. Endocrinol. 23:243-254.
29. Vasconcelos, J. L., R. Sartori, H. N. Oliveira, J. G. Guenther, and M. C. Wiltbank. 2001. Reduction in size of the ovulatory follicle reduces subsequent luteal size and pregnancy rate. Theriogenology 56:307-314.
30. Vasconcelos, J. L., R. W. Silcox, G. J. Rosa, J. R. Pursley, and M. C. Wiltbank. 1999. Synchronization rate, size of the ovulatory follicle, and pregnancy rate after synchronization of ovulation beginning on different days of the estrous cycle in lactating dairy cows. Theriogenology 52:1067-1078.
31. Xu, Z., H. A. Garverick, G. W. Smith, M. F. Smith, S. A. Hamilton, and R. S. Youngquist. 1995. Expression of follicle-stimulating hormone and luteinizing hormone receptor messenger ribonucleic acids in bovine follicles during the first follicular wave. Biol. Reprod. 53:951-957.
32. Xu, Z. Z., L. J. Burton, and K. L. Macmillan. 1997. Reproductive performance of lactating dairy cows following estrus synchronization regimens with PGF2alpha and progesterone. Theriogenology 47:687-701.