Follicle Growth and Control of Ovulation in the Ewe Following Treatment with 6-Methyl-17-Acetoxyprogesterone
- 31 July 1964
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 23 (3), 787-790
- https://doi.org/10.2527/jas1964.233787x
Abstract
MAP given at levels of 40, 60, 75, or 200 mg. per head daily inhibited heat and ovulation in ewes during treatment and for at least 48 hr. afterward. Follicles did grow during the normal follicular stage of the estrous cycle, while ewes were being treated with 40 or 60 mg. of MAP daily. Heat usually occurred about 54 to 72 hr. after last MAP treatment. Ovulation time was not well correlated with the time of last MAP treatment nor with the time of onset of heat. Ovulation occurred about 25 hr. after intramuscular injection of 500 I.U. of HCG. Control of the time of ovulation by this means may be useful as a tool in reproductive physiology research and in practical sheep husbandry. Copyright © 1964. American Society of Animal Science . Copyright 1964 by American Society of Animal ScienceThis publication has 4 references indexed in Scilit:
- Control of Estrus and Lambing Performance in Cycling Ewes Fed 6-Methyl-17-AcetoxyprogesteroneJournal of Animal Science, 1964
- Breeding Performance in Ewes after Synchronizing Estrus by Feeding 6-Methyl-17-AcetoxyprogesteroneJournal of Animal Science, 1962
- Fertility of Ewes Bred Naturally and Artificially after Estrous Cycle Synchronization with an Oral Progestational AgentJournal of Animal Science, 1962
- The time of ovulation and efficiency of fertilization following progesterone and pregnant mare serum treatment in the cyclic eweThe Journal of Agricultural Science, 1961