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The onset of the breeding season in Southdown ewes in subtropical Australia

Published online by Cambridge University Press:  27 March 2009

I. D. Smith
I. D. Smith
Affiliation:
Department of Animal Husbandry, University of Queensland, St Lucia, Brisbane, Australia
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Extract

Observations on the onset of the breeding season in a flock ofSouthdown ewes in subtropical Australia (latitude 27° S.) indicated that the mean date of onset during the years 1962-65 was 3 March, with annual means ranging from 11 February to 17 March. There was evidence that, under some circumstances, ovarian activity may be initiated before the summer solstice.

The onset of the breeding season was later in ewe lambs than in yearling and adult ewes and the mean age at puberty was 239 days.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 66 , Issue 2 , April 1966 , pp. 295 - 296
Copyright
Copyright © Cambridge University Press 1966

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References

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