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30 crossbred ewes were given for 12 days a vaginal sponge containing 30 mg FGA or 500 mg progesterone, or a progesterone controlled internal drug releaser (CIDR). Between days 10 and 12, they were injected with 45 mg crude horse anterior pituitary extract. Ewes were mated 2-3 times during oestrus....

Boland, M. P.; Crosby, T. F.; Gordon, I.; Roche, J. F.; McLeod, B.; Haresign, W.; Donnelly, J.
University College Dublin, Dublin, Irish Republic
11th International Congress on Animal Reproduction and Artificial Insemination, University College Dublin, Ireland, June 26-30 1988. Volume 2. Brief communications., 1988, Paper No. 145, pp 3pp.