Resumption of oestrous and ovarian cyclicity during the post-partum period in autumn-lambing ewes is not influenced by age or dietary protein content

Animal Science

Volumn 67, Issue 1, 1998, Pages 65-72

  Mitchell, L M ^a   King, M E ^a   Gebbie, F E ^a   Ranilla, M J ^a   Robinson, J J ^a  

^a NONE

Author keywords

Age; Dietary protein; Ewes; Oestrous cycle; Post partum interval

Indexed keywords

EID: 0032138307     PISSN: 13577298     EISSN: None     Source Type: Journal    
DOI: 10.1017/S1357729800009802     Document Type: Article

References (31)

1. Aitken, R. P., Robinson, J. J. and Wallace, J. M. 1995. Is early resumption of ovarian activity detrimental to the reestablishment of pregnancy in the lactating ewe? Biology of Reproduction 52: (suppl. 1) 107.
2. Al-Gubory, K. H. and Martinet, J. 1986. Comparison of the total ovarian follicular populations at day 140 of pregnancy and at day 5 postpartum in ewes. Theriogenology 25: 795-808.
3. Bartlewski, P. M., Beard, A. P. and Rawlings, N. C. 1995. The presence of the corpus luteum and/or embryo during pregnancy influences ovarian follicular development in the post-parfum ewe. Journal of Reproduction and Fertility, Abstract Series 16: 9.
4. Boyd, J. S. and Ducker, M. J. 1973. A method of examining the cyclic changes occurring in the sheep ovary using endoscopy. Veterinary Record 90: 40-43.
5. Cahill, L. P. and Mauleon, P. 1980. Influences of season, cycle and breed on follicular growth rates in sheep. Journal of Reproduction and Fertility 58: 321-328.
6. Chamley, W. A., Jonas, H. A. and Parr, R. A. 1976. Content of LH, FSH and growth hormone in the pituitaries of pregnant and anoestrous sheep. Endocrinology 98: 1535-1538.
7. Dyrmundsson, O. R. 1978. Studies on the breeding season of Icelandic ewes and ewe lambs. Journal of Agricultural Science, Cambridge 90: 275-281.
8. Foxcroft, G. R. 1992. Nutritional and lactational regulation of fertility in sows. Journal of Reproduction and Fertility, Supplement 45:113-125.
9. Fredriksson, G. 1985. Release of PGF2∝ during parturition and the postpartum period in the ewe. Theriogenology 24: 331-335.
10. Hare, L. and Bryant, M. J. 1982. Characteristics of oestrous cycles and plasma progesterone profiles of young female sheep during their first breeding season. Animal Production 35: 1-7.
11. McKelvey, W. A. C., Robinson, J. J., Gebbie, F. E., Lindsay, E. and Dingwall, W. S. 1997. The identification and treatment of aberrant luteal activity during anoestrus in Suffolk ewes submitted for artificial insemination. Proceedings of the British Society of Animal Science, 2997, p. 182.
12. McNeilly, A. S. and Baird, D. T. 1983. Direct effect of prolactin, induced by TRH injection, on ovarian oestradiol secretion in the ewe. Journal of Reproduction and Fertility 69: 559-568.
13. McNeilly, A. S. and Fraser, H. M. 1987. Effect of gonadotrophin releasing hormone agonist induced suppression of LH and FSH on follicle growth and corpus luteum function in the ewe. Journal of Endocrinology 115: 273-282.
14. Mandiki, S. N. M., Bister, J. L. and Parquay, R. 1990. Effects of suckling mode on endocrine control of reproductive activity resumption in Texel ewes lambing in July or November. Theriogenology 33: 397-413.
15. Mitchell, L. M., King, M. E., Aitken, R. P. and Wallace, J. M. 1997. Influence of lambing date on subsequent ovarian cyclicity and ovulation rate in ewes. Animal Science 65: 75-81.
16. Nett, T. M. 1987. Function of the hypothalamic-hypophysial axis during the post-partum period in ewes and cows. Journal of Reproduction and Fertility, Supplement 34: 201-213.
17. Quirke, J. F., Stabenfeldt, G. H. and Bradford, G. E. 1983. Resumption of ovarian function in autumn lambing Dorset, Rambouillet and Finnish Landrace ewes. Theriogenology 19: 243-248.
18. Rubianes, E. and Ungerfeld, R. 1993. Uterine involution and ovarian changes during early post partum in autumn-lambing Corriedale ewes. Theriogenology 40: 365-372.
19. Russel, A. J. F., Doney, J. M. and Gunn, R. B. 1969. Subjective assessment of body fat in live sheep. Journal of Agricultural Science, Cambridge 72: 451-454.
20. Schirar, A., Cognie, Y., Louault, F., Poulin, N., Levasseur, M. C. and Martinet, J. 1989. Resumption of oestrous behaviour and cyclic ovarian activity in suckling and non-suckling ewes. Journal of Reproduction and Fertility 87: 789-794.
21. Schirar, A., Cognie, Y., Louault, F., Poulin, N., Meusnier, C., Levasseur, M. C. and Martinet, J. 1990. Resumption of gonadotrophin release during the post-partum period in suckling and non-suckling ewes. Journal of Reproduction and Fertility 88: 593-604.
22. Schirar, A. and Levasseur, M. C. 1989. Resumption of ovarian activity in post-partum ewes: carry-over effect of the corpus luteum of pregnancy. Animal Reproduction Science 19: 91-97.
23. Sharpe, P. H., McKibbin, P. E., Murphy, B. D. and Manns, J. G. 1986. First postpartum ovulations and corpora lutea in ewes which lamb in the breeding season. Animal Reproduction Science 10: 61-74.
24. Smart, D., Singh, I., Smith, R. F. and Dobson, H. 1994. Opioids and suckling in relation to inhibition of oestradiolinduced LH secretion in postpartum ewes. Journal of Reproduction and Fertility 101: 115-119.
25. Wallace, J. M. 1995. Factors limiting re-establishment of pregnancy soon after birth. Annual report of the Rowett Research Institute.
26. Wallace, J. M., Thompson, M. G., Aitken, R. P. and Cheyne, M. A. 1993. Oxytocin receptor concentrations, inositol phosphate turnover and prostaglandin release by endometrium from ewes induced to ovulate during the early post-partum period. Endocrinology 136: 17-25.
27. Wheeler, A. G. and Land, R. B. 1977. Seasonal variation in oestrus and ovarian activity of Finnish Landrace, Tasmanian Merino and Scottish Blackface ewes. Animal Production 24: 363-376.
28. Williams, G. L. 1990. Suckling as a regulator of post-partum rebreeding in cattle: a review. Journal of Animal Science 68: 831-852.
29. Wise, M. E., Glass, J. D. and Nett, T. M. 1986. Changes in the concentration of hypothalamic and hypophyseal receptors for estradiol in pregnant and postpartum ewes. Journal of Animal Science 62: 1021-1028.
30. Zarco, L., Stabenfeldt, G. H., Kindahl, H., Quirke, J. F. and Granstrom, E. 1984. Persistence of luteal activity in the non-pregnant ewe. Animal Reproduction Science 7: 245-267.
31. Zurek, E., Foxcroft, G. R. and Kennelly, J. J. 1995. Metabolic status and interval to first ovulation in postparrum dairy cows. Journal of Dairy Science 78: 1909-1920.