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Observations on the onset of the breeding season and on the oestrous cycle of the Welsh Mountain ewe

Published online by Cambridge University Press:  27 March 2009

J. S. M. Hutchinson
Affiliation:
Department of Biological Chemistry, University of Aberdeen
P. J. O'Connor
Affiliation:
Department of Biological Chemistry, University of Aberdeen
H. A. Robertson
Affiliation:
Department of Biological Chemistry, University of Aberdeen

Extract

1.Within a flock of 55 Welsh Mountain ewes maintained under lowland conditions the first ewecame into oestrus on the 14th October. The mean cycle length of 44 normal cycles was 16 days 3 hr.

2. The onset of oestrus as assessed by the time of mounting of the ram does not appear to beevenly distributed throughout the day (24 hr.).

Type
Research Article
Copyright
Copyright © Cambridge University Press 1964

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