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The effect of treatment by prostaglandin analogue (ICI–80, 996) or progestagen (SC-9880) on ovulation and fertilization in cyclic ewes

Published online by Cambridge University Press:  27 March 2009

M. P. Boland ,
I. Gordon  and
D. L. Kelleher
M. P. Boland
Affiliation:
Department of Agriculture, University College, Lyons Estate, Newcastle P.O., Co. Dublin, Eire
I. Gordon
Affiliation:
Department of Agriculture, University College, Lyons Estate, Newcastle P.O., Co. Dublin, Eire
D. L. Kelleher
Affiliation:
Department of Agriculture, University College, Lyons Estate, Newcastle P.O., Co. Dublin, Eire
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Summary

Mature cyclic ewes were treated intravaginally with sponges impregnated with 30 mg SC-9880 (G. D. Searle) or intramuscularly with 100 μg Cloprostenol (I.C.I. 80, 996) and examined subsequently for oestrus, ovulation and fertilization. At 70 h after the end of treatment, 90% of ewes treated with SC-9880 and 45% of those treated with Cloprostenol had ovulated. Of ewes yielding eggs at 100 h a significantly higher proportion of SC-9880 treated sheep showed evidence of fertilization (69% v. 7%).

Type
Research Article
Information
The Journal of Agricultural Science , Volume 91 , Issue 3 , December 1978 , pp. 727 - 730
Copyright
Copyright © Cambridge University Press 1978

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