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Over a 14-month period, 100 Scottish Blackface ewes were given (1) a melatonin implant every 10 days, (2) alternating 30-day periods of melatonin implantation every 10 days and no implantation, or (3) no treatment (controls). The interval from the start of treatment to 1st oestrus averaged 74±70,...

Johnston, J. P. J.; Quirke, J. F.; Boland, M. P.; Roche, J. F.
University College Dublin., Dublin, Irish Republic
11th International Congress on Animal Reproduction and Artificial Insemination, University College Dublin, Ireland, June 26-30 1988. Volume 4. Brief communications., 1988, Paper No. 408, pp 3pp.