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A note on the effects of boar presence on the performance of sows and their litters when penned as groups in late lactation

Published online by Cambridge University Press:  02 September 2010

A. M. Petchey  and
P. R. English
A. M. Petchey
Affiliation:
School of Agriculture, 581 King Street, Aberdeen, AB9 1UD
P. R. English
Affiliation:
School of Agriculture, 581 King Street, Aberdeen, AB9 1UD
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Abstract

When sows and their litters were grouped 21 days after farrowing, the introduction of a boar 4 days later stimulated lactational oestrus in only 2 of the 21 sows (seven groups of three sows and litters) exposed to the boar, while none of the sows in the control groups showed lactational oestrus. The boar presence in lactation affected the subsequent weaning to first service interval. This interval was 228 days for the sows exposed to a boar and 10·0 days for the control groups, the difference approaching significance (0·05<P<0·10). None of the sows in the boar treatment groups had a weaning to oestrus interval exceeding 9 days.

Type
Research Article
Information
Animal Production , Volume 31 , Issue 1 , August 1980 , pp. 107 - 109
Copyright
Copyright © British Society of Animal Science 1980

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References

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