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On-farm identification of the optimum time for mating in pigs

Published online by Cambridge University Press:  22 November 2017

P.N. Hooper ,
J.R. Walters  and
J. Gray
P.N. Hooper
Affiliation:
Masterbreeders (Livestock Development) Ltd., Pig Improvement Centre, Hastoe, Tring, Herts HP23 6PJ
J.R. Walters
Affiliation:
Masterbreeders (Livestock Development) Ltd., Pig Improvement Centre, Hastoe, Tring, Herts HP23 6PJ
J. Gray
Affiliation:
Masterbreeders (Livestock Development) Ltd., Pig Improvement Centre, Hastoe, Tring, Herts HP23 6PJ
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Extract

The most important factor affecting the overall efficiency and profitability of pig production is the accurate timing of insemination in the breeding herd. Low conception rates and litter sizes result from pigs inseminated during the ‘incorrect’ period of oestrus in relation to ovulation. The average time at which ovulation takes place is between 38 and 42 hours after the onset of oestrus (Du Mesnil du Buisson, Mauleon, Locatelli and Mariana, 1970) with highest fertility achieved for matings carried out approximately 12 hours prior to ovulation (Dziuk, 1970). The back pressure test in the presence of a boar is generally used to indicate oestrus but does not indicate the time of onset or the stage of oestrus.

Type
Pigs
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1984 , March 1984 , pp. 85
Copyright
Copyright © The British Society of Animal Production 1984

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References

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