Effect of progesterone priming on gonadotropin secretion and luteal function in GnRH-treated seasonally anoestrous ewes

Animal Science

Volumn 62, Issue 1, 1996, Pages 97-103

  Haresign, W ^a   Basiouni, G F ^a   Khalid, M ^a  

^a UNIVERSITY OF NOTTINGHAM   (United Kingdom)

Author keywords

Ewes; GnRH; Gonadotropins; Luteal function; Progesterone

Indexed keywords

ANIMALIA; OVIS; ZEA MAYS;

EID: 0030078481     PISSN: 13577298     EISSN: None     Source Type: Journal    
DOI: 10.1017/S1357729800014375     Document Type: Article

References (17)

1. Clarke, I. J. and Cummins, J. 1984. Direct pituitary effects of estrogen and progesterone on gonadotropin secretion in the ovariectomized ewe. Neuroendocrinology 39: 267-274.
2. Foster, J. P. and Crighton, D. B. 1974. Luteinizing hormone (LH) release after single injections of a synthetic LH-releasing hormone (LH-RH) in the ewe at three different reproductive stages and comparison with natural LH release at oestrus. Theriogenology 2: 87-100.
3. Haresign, W., Cooper, A. C., Khalid, M. and Hanrahan, J. P. 1995. Patterns of gonadotropins secretion in cyclic Finn ewes selected for and against high ovulation rate. Animal Science 61: 251-257.
4. Haresign, W., Foster, J. P., Haynes, N. B., Crighton, D. B. and Lamming, G. E. L. 1975. Progesterone levels following treatment of seasonally anoestrous ewes with synthetic LH-releasing hormone. Journal of Reproduction and Fertility 43: 269-279.
5. Hauger, R. L., Karsch, F. J. and Foster, D. L. 1977. A new concept for control of estrous cycle in the ewe based on the temporal relationships between luteinizing hormone, estradiol and progesterone in peripheral serum and evidence that progesterone inhibits tonic LH secretion. Endocrinology 101: 807-817.
6. Hunter, M. G., Southee, J. A., McLeod, B. J. and Haresign, W. 1986. Progesterone pretreatment has a direct effect on GnRH-induced preovulatory follicle to determine their ability to develop into normal corpora lutea in anoestrous ewes. Journal of Reproduction and Fertility 76: 349-363.
7. Karsch, F. J., Bittman, E. L., Foster, D. L., Goodman, R. L., Legan, S. J. and Robinson, J. E. 1984. Neuroendocrine basis of seasonal reproduction. Recent Progress in Hormone Research 40: 185-225.
8. Karsch, F. J., Legan, S. J., Hauger, R. L. and Foster, D. L. 1977. Negative feedback action of progesterone on tonic luteinizing hormone secretion in the ewe: dependence on the ovaries. Endocrinology 101: 800-806.
9. Legan, S. J. and Saelinger, H. T. 1985. Serum FSH levels in GnRH-treated anoestrous ewes: effect of progesterone pretreatment on mean levels and pulsatile release. Biology of Reproduction 32: suppl., abstr. 152.
10. Martin, G. B., Wallace, J. M., Taylor, P. L., Fraser, H. M., Tsonis, C. G. and McNeilly, A. S. 1986. The roles of inhibin and gonadotrophin secretion in the ewe. Journal of Endocrinology 111: 287-296.
11. McLeod, B. J. and Haresign, W. 1984. Evidence that progesterone may influence subsequent luteal function in the ewe by modulating preovulatory follicle development. Journal of Reproduction and Fertility 71: 381-386.
12. McLeod, B. J. and Haresign, W. 1987. Plasma FSH concentrations in seasonally anoestrous ewes induced to ovulate with repeated injections or continuous infusion of GnRH. Animal Reproduction Science 14: 53-63.
13. McLeod, B. J., Haresign, W. and Lamming, G. E. 1982a. The induction of ovulation and luteal function in seasonally anoestrous ewes treated with small-dose multiple injections of GnRH. Journal of Reproduction and Fertility 65: 215-221.
14. McLeod, B. J., Haresign, W. and Lamming, G. E. 1982b. Response of seasonally anoestrous ewes to small-dose multiple injections of GnRH with and without progesterone pretreatment. Journal of Reproduction and Fertility 65: 223-230.
15. Pearce, D. T., Oldham, C. M., Haresign, W. and Gray, S. J. 1987. Effects of duration and timing of progesterone priming on the incidence of corpora lutea with a normal life-span in Merino ewes induced to ovulate by the introduction of rams. Animal Reproduction Science 13: 81-89.
16. Rush, M. E. 1986. Follicle-stimulating hormone secretion in monosodium glutamate-lesioned rats: response to unilateral gonadectomy or porcine follicular fluid (inhibin). Life Science 38: 1941-1949.
17. Southee, J. A., Hunter, M. G. and Haresign, W. 1988. Function of abnormal corpora lutea in vivo after GnRH-induced ovulation in the anoestrous ewe. Journal of Reproduction and Fertility 84: 131-137.