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The effect of increasing feed intake for one day only during the oestrus period on the reproductive performance of sows

Published online by Cambridge University Press:  02 September 2010

P. H. Brooks  and
D. J. A. Cole
P. H. Brooks
Affiliation:
School of Agriculture, University of Nottingham, Sutton Bonington, Loughborough, Leicestershire LE12 5RD
D. J. A. Cole
Affiliation:
School of Agriculture, University of Nottingham, Sutton Bonington, Loughborough, Leicestershire LE12 5RD
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Summary

Two groups of 24 Landrace × Large White gilts were allocated at puberty to two feeding regimes during oestrus. The control group received 1·8 kg food/day throughout the oestrus period, while the flushed group had an additional 1·8 kg immediately after mating on the first day of oestrus. The treatments were imposed at the first post-puberal heat (second heat) and at the post-weaning oestrus in the second and third parities. The sows remained on the same treatment throughout the experiment. Litter performance was measured in the first two parities. The sows were slaughtered on day 25 of their third gestation to provide data on ovulation rate and embryo mortality. Increasing feed intake to 3·6 kg on the day of mating did not significantly affect the number of piglets born, number born live, or mean piglet weight, in either the first or second parity. In the third parity, ovulation rate, embryo number at 25 days of gestation and embryo mortality were unaffected by treatment.

Type
Research Article
Information
Animal Production , Volume 13 , Issue 4 , November 1971 , pp. 669 - 675
Copyright
Copyright © British Society of Animal Science 1971

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References

REFERENCES

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