The effects of varying the interval from follicular wave emergence to progestin withdrawal on follicular dynamics and the synchrony of estrus in beef cattle

Journal of Animal Science

Volumn 81, Issue 6, 2003, Pages 1562-1567

  Utt, M D ^a   Jousan A, F D ^a   Beal, W E ^a,b  

^a VIRGINIA POLYTECHNIC INSTITUTE AND STATE UNIVERSITY   (United States)

^b 3200 Litton Reaves Hall ^*  (United States)

Author keywords

Cattle; Estradiol; Follicles; Gonadotropin Releasing Hormone; Progestogens; Synchronized Females

Indexed keywords

BOS TAURUS; INSERTION SEQUENCES;

GESTAGEN; PROGESTERONE;

ANIMAL; ANIMAL DISEASE; ARTICLE; BLOOD; CATTLE; CORPUS LUTEUM; DRUG EFFECT; DRUG IMPLANT; ECHOGRAPHY; ESTRUS CYCLE; FEMALE; OVARY FOLLICLE; OVULATION; PHYSIOLOGY; RADIOIMMUNOASSAY; RANDOMIZATION; TIME;

ANIMALS; CATTLE; CORPUS LUTEUM; DRUG IMPLANTS; ESTRUS SYNCHRONIZATION; FEMALE; OVARIAN FOLLICLE; OVULATION; PROGESTERONE; PROGESTINS; RADIOIMMUNOASSAY; RANDOM ALLOCATION; TIME FACTORS;

EID: 0642337847     PISSN: 00218812     EISSN: None     Source Type: Journal    
DOI: 10.2527/2003.8161562x     Document Type: Article

References (15)

1. Bentley, D., M. Martinez, B. Mitchell, and T. Carruthers. 1998. LH release, dominant follicle response and wave emergence: The effect of three commercial GnRH products. Theriogenology 49:338. (Abstr.)
2. Garcia, A., and M. Salaheddine. 2001. Effect of estrus synchronization with estradiol-17β and progesterone on follicular wave dynamics in dairy heifers. Reprod. Dom. Anim. 36:301-307.
3. Ginther, O. J., J. P. Kastelic, and L. Knopf. 1989. Composition and characteristics of follicular waves during the bovine estrous cycle. Anim. Reprod. Sci. 20:187-200.
4. Hansel, W., P. V. Malven, and D. L. Black. 1961. Estrous cycle regulation in the bovine. J. Anim. Sci. 20:621-625.
5. Holt, L. C., W. D. Whittier, F. C. Gwazdauskas, and W. E. Vinson. 1989. Early postpartum reproductive profiles in Holstein cows with retained pacenta and uterine discharges. J. Dairy Sci. 72:533-539.
6. Ireland, J. J., and J. F. Roche. 1982. Effect of progesterone on basal LH and episodic LH and FSH secretion in heifers. J. Reprod. Fertil. 64:295-302.
7. Lane, E. A., E. J. Austin, J. F. Roche, and M. A. Crowe. 2001. The effect of estradiol benzoate or a synthetic gonadotropin releasing hormone used at the start of a progesterone treatment on estrous response in cattle. Theriogenology 56:79-90.
8. Martinez, M. F., G. P. Adams, J. P. Kastelic, D. R. Bergfelt, and R. J. Mapletoft. 2000. Induction of follicular wave emergence for estrus synchronization and artificial insemination in heifers. Theriogenology 54:757-769.
9. Rahe, C. H., R. E. Owens, J. L. Fleeger, H. J. Newton, and P. G. Harms. 1980. Pattern of plasma luteinizing hormone in the cyclic cow: Dependence upon the period of the cycle. Endocrinology 107:498-503.
10. Roberson, M. S., M. W. Wolfe, T. T. Stumpf, R. J. Kittok, and J. E. Kinder. 1989. Luteinizing hormone secretion and corpus luteum function in cows receiving two levels of progesterone. Biol. Reprod. 41:997-1003.
11. Roche, J. F. 1974. Effect of short term progesterone treatment on estrous response and fertility in heifers. J. Reprod. Fertil. 40:433-440.
12. Savio, J. D., W. W. Thatcher, G. R. Morris, K. Entwistle, M. Drost, and M. R. Mattiacci. 1993. Effects of induction of low plasma progesterone concentrations with a progesterone-releasing intravaginal device on follicular turnover and fertility in cattle. J. Reprod. Fertil. 98:77-84.
13. Sirois, J., and J. E. Fortune. 1990. Lengthening the bovine estrous cycle with low levels of exogenous progesterone: a model for studying ovarian follicular dominance. Endocrinology 127:916-925.
14. Steele, R. G. D., and J. H. Torrie. 1960. Principles and procedures of statistics: With special reference to the biological sciences. McGraw Hill, New York, NY.
15. Walker, W. L., R. L. Nebel, and M. L. McGilliard. 1996. Time of ovulation relative to mounting activity in dairy cattle. J. Dairy Sci. 79:1555-1561.