The effect of melatonin treatment in combination with progestagen pessaries on reproductive performance of ewes during the anoestrous period

Animal Science

Volumn 65, Issue 1, 1997, Pages 71-74

  Laliotis, V ^a   Vosniakou, A ^a   Lymberopoulos, A ^a   Doneyt, J M ^a,b   Kouimtzis, S ^a  

^a INSTITUTE OF TECHNOLOGY OF AGRICULTURAL PRODUCTS   (Greece)

^b NONE   (United Kingdom)

Author keywords

Anoestrus; Ewes; Melatonin; Pregnancy rate; Progesterone

Indexed keywords

OVIS;

EID: 0031202506     PISSN: 13577298     EISSN: None     Source Type: Journal    
DOI: 10.1017/S1357729800016313     Document Type: Article

References (15)

1. Cognie, Y. and Mauleon, P. 1983. Control of reproduction in the ewe. In Sheep production (ed. W. Haresign), pp. 381-392. Butterworths, London.
2. Evans, G. and Robinson, T. J. 1980. The control of fertility in sheep: endocrine and ovarian responses to progestagen - PMSG treatment in the breeding season and in anoestrus. Journal of Agricultural Science, Cambridge 93: 69-88.
3. Hamra, A. H., McNally, J. W., Marcek, J. M., Carlson, K. M. and Wheaton, J. E. 1989. Comparison of progesterone sponges, cronolone sponges and controlled internal drug release dispensers on fertility in anoestrous ewes. Animal Reproduction Science 18: 219-226.
4. Haresign, W. 1992. The effect of implantation of lowland ewes with melatonin on the time of mating and reproductive performance. Animal Production 54: 31-39.
5. Kouimtzis, S. A., Belibasaki, S. and Doney, J. M. 1989. Melatonin advances and condenses the onset of seasonal breeding in Greek dairy ewes. Animal Production 48: 399-405.
6. Kouimtzis, S., Davies, P., Doney, J. and Laliotis, V. 1994. The effect of melatonin on seasonal breeding in commercial flocks of Greek dairy sheep. Živočišná Vỳroba 39: 689-697.
7. Laliotis, V., Vosniakou, A. G., Doney, J. M. and Batsios, C. A. 1994. The efficiency of AI or natural service after oestrus synchronisation in sheep of North Greece. World Review of Animal Production 28: 72-79.
8. Rajkumar, R. R., Argo, C. M. and Rodway, A. G. 1989. Fertility of ewes given either melatonin or progestagen sponges. Veterinary Record 124: 215-217.
9. Robinson, T. J. 1968. The synchronization of the oestrous cycle and fertility. Proceedings of the sixth congrès international de reproduction animale et insémination artificielle, vol. II, pp. 1347-1382.
10. Staples, L. D., McPhee, S. R., Kennaway, D. J. and Williams, A. H. 1992. The influence of exogenous melatonin on the seasonal patterns of ovulation and oestrus in sheep. Animal Reproduction Science 30: 185-222.
11. Thimonier, J. 1979. Hormonal control of oestrous cycle in the ewe. Livestock Production Science 6: 39-50.
12. Vlachos, K., Karagiannidis, A. and Koutsouris, C. 1967. Research on oestrus synchronization in sheep by using the preparation Cronolone SC-9880. Bulletin of the Physiology of Reproduction and Artificial Insemination 3: 3-11.
13. Vlachos, K., Koutsouris, C. and Paschaleris, E. 1968. Research in oestrus synchronization in sheep by using the "Synchro-Mate" and "Spongosan" preparations. Bulletin of the Physiology of Reproduction and Artificial Insemination 5: 129-140
14. Vosniakou, A. G., Doney, J. M. and Tsakalof, P. 1989. A note on the seasonal oestrous period in three breeds of Greek dairy sheep. Animal Production 49:147-150.
15. Wheaton, J. E., Pohl, H. A. and Windels, H. F. 1990. Effects of melatonin and progesterone administered to ewes in spring and summer. Journal of Animal Science 68:923-930.