Effect of high progesterone levels during the growing phase of the dominant follicle of wave 1 in ultrasonically monitored ewes

Canadian Journal of Animal Science

Volumn 76, Issue 3, 1996, Pages 473-475

  Rubianes, E ^a   De Castro, T ^a   Carbajal, B ^a  

^a Faculty of Veterinary   (Uruguay)

Author keywords

Dominant follicle; Ewes; Progesterone; Ultrasonography; Wave 1

Indexed keywords

OVIS;

EID: 0030488861     PISSN: 00083984     EISSN: None     Source Type: Journal    
DOI: 10.4141/cjas96-071     Document Type: Article

References (10)

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2. Ginther, O. J. 1971. Influence of progesterone and number of corpora lutea on ovaries in sheep. Am. J. Vet. Res. 32: 1987-1992.
3. Ginther, O. J., Kot, K. and Wiltbank, M. C. 1995. Associations between emergence of follicular waves and fluctuations in FSH concentrations during the estrous cycle in ewes. Theriogenology 43: 689-703.
4. Goodman, R. L. 1994. Neuroendocrine control of the ovine estrous cycle. Pages 659-709 in E. Knobil and J. D. Neill eds. The physiology of reproduction. 2nd ed. Raven Press Ltd., New York, NY.
5. Houghton, J. A. S., Liberati, F., Schrick, F. N., Towsend, E. C., Dailey, R. A. and Inskeep, E. K. 1995. Day of estrous cycle affects follicular dynamics after induced luteolysis in ewes. J. Anim. Sci. 73: 2094-2101.
6. Johnson, S. K., Lewis, P. E. and Inskeep, E. K. 1992. Effect of progesterone on preovulatory follicular diameter in ewes. J. Anim. Sci. 70: 273 (abstr.).
7. Ravindra, J. P., Rawlings, N. C., Evans, A. C. O. and Adams, G. P. 1994. Ultrasonographic study of ovarian follicular dynamics in ewes during the oestrus cycle. J. Reprod. Fertil. 101: 501-509.
8. Rubianes, E. and Ungerfeld R. 1993. Uterine involution and ovarian changes during early postpartum in autumn-lambing Corriedale ewes. Theriogenology 40: 365-372.
9. Savio, J. D., Thatcher, W. W., Badinga, L., de la Sota, R. L. and Wolfenson, D. 1993 Regulation of dominant follicle turnover during the oestrous cycle in cows. J. Reprod. Fertil. 97: 197-203.
10. Schrick, F. N., Surface, R. A., Pritchard, J. Y., Dailey, R. A., Townsend, E. C. and Inskeep, E. K. 1993. Ovarian structures during the estrous cycle and early pregnancy in ewes. Biol. Reprod. 49: 1133-1140.