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Reproductive success of ewe lambs after a period of exposure to vasectomised rams

Published online by Cambridge University Press:  22 November 2017

N.Z. Al-Mauly ,
M.J. Bryant  and
F.J. Cunningham
N.Z. Al-Mauly
Affiliation:
Departments of Agriculture and Physiology, University of Reading, Reading, Berks
M.J. Bryant
Affiliation:
Departments of Agriculture and Physiology, University of Reading, Reading, Berks
F.J. Cunningham
Affiliation:
Departments of Agriculture and Physiology, University of Reading, Reading, Berks Departments of Agriculture and Physiology and Biochemistry, University of Reading, Reading, Berks
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Extract

The fertility of ewe lambs is usually lower than that of mature ewes. Early embryo loss has been implicated as a cause of reduced fertility, especially when matings occur at the pubertal oestrus (Hare and Bryant, 1985). The Introduction of vasectomised rams to ewe lambs may hasten the occurrence of puberty and, if the introduction of fertile rams is not advanced, mating may occur later in the breeding season with possible advantages to fertility. This experiment investigated the effects of a period of association with vasectomised rams preceding the introduction of entire rams upon (1) the occurrence of puberty, and (2) the fertility of ewe lambs.

Type
Developments in Sheep Production
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1988 , March 1988 , pp. 89
Copyright
Copyright © The British Society of Animal Production 1988

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References

Hare, Louise and Bryant, M.J. (1985). Anim. Reprod. Sci. 8: 41–52.CrossRefGoogle Scholar