Hostname: page-component-8448b6f56d-cfpbc Total loading time: 0 Render date: 2024-04-23T11:47:04.663Z Has data issue: false hasContentIssue false
  • English
  • Français

The use of light and melatonin treatments in the preparation of Suffolk rams for out-of-season breeding

Published online by Cambridge University Press:  02 September 2010

H. Ll. Williams ,
M. Hanif  and
G. Cairns
H. Ll. Williams
Affiliation:
Department of Veterinary Medicine and Animal Husbandry, Royal Veterinary College, Potters Bar EN6 1NB
M. Hanif
Affiliation:
Department of Veterinary Medicine and Animal Husbandry, Royal Veterinary College, Potters Bar EN6 1NB
G. Cairns
Affiliation:
Department of Veterinary Medicine and Animal Husbandry, Royal Veterinary College, Potters Bar EN6 1NB

Abstract

An abstract is not available for this content so a preview has been provided. As you have access to this content, a full PDF is available via the ‘Save PDF’ action button.
Image of the first page of this content. For PDF version, please use the ‘Save PDF’ preceeding this image.'
Type
Poster Abstracts
Information
BSAP Occasional Publication , Volume 14: New Developments in Sheep Production , January 1990 , pp. 142 - 145
Copyright
Copyright © British Society of Animal Production 1990

References

REFERENCES

Almedia, O. F. X. and Lincoln, G. A. 1984. Reproductive photorefractoriness in rams and accompanying changes in the patterns of melatonin and prolactin secretion. Biology of Reproduction 30: 143–158.CrossRefGoogle Scholar
Arendt, J., Symons, A. M., Land, C. A. and Pryde, S. J. 1983. Melatonin can induce early onset of the breeding season in ewes. Journal of Endocrinology 97: 395–400.CrossRefGoogle ScholarPubMed
Evans, G. and Maxwell, W. M. C. 1986. Salomon's Artificial Insemination of Sheep and Goats. Butterworths, London.Google Scholar
Hanif, M. and Williams, H. Ll. 1988. The effects of melatonin and light treatment on the reproductive performance of yearling Suffolk rams.Proceedings of the 11th International Congress on Animal Reproduction and Artificial Insemination,Dublin, Vol. IV, p. 578.Google Scholar
Jackson, G. and Williams, H. Ll. 1973. The effect of imposed light rhythms on semen production of Suffolk rams. Journal of Agricultural Science, Cambridge 81: 179–188.CrossRefGoogle Scholar
Lincoln, G. A. and Davidson, D. W. 1977. The relationship between sexual and aggressive behaviour and pituitary and testicular activity during the seasonal sexual cycle of rams, and the influence of the photoperiod. Journal of Reproduction and Fertility 49: 267–276.CrossRefGoogle ScholarPubMed
Schanbacher, B. D. 1979. Increased lamb production with rams exposed to short daylengths during the non-breeding season. Journal of Animal Science 49: 927–932.CrossRefGoogle Scholar
Williams, H. Ll. 1977. Environmental control of oestrus with particular attention to alterations of daylength.Proceedings of the 28th Annual Meeting of the European Association for Animal Production Brussels,Belgium, M-SG/5.04/1–6.Google Scholar
Williams, H. Ll. 1984. The effect of feeding melatonin during late summer on the onset of the breeding season of sheep. British Veterinary Journal 140: 407–408.CrossRefGoogle ScholarPubMed
Williams, H. Ll. 1985. The use of melatonin to initiate breeding activity in photoperiodic breeds of sheep.Proceedings of the 36th Annual Meeting of the European Association for Animal Production Halkidiki,Greece.Google Scholar
Williams, H. Ll. and Ward, S. 1988. Melatonin and light treatment of ewes for autumn lambing. Reproduction, Nutrition, Développement 28: 79–85.CrossRefGoogle ScholarPubMed