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Estimates of genetic and phenotypic parameters of litter traits from closed lines of pigs

Published online by Cambridge University Press:  02 September 2010

Y. Gu ,
C. S. Haley  and
R. Thompson
Y. Gu
Affiliation:
AFRC Institute of Animal Physiology and Genetics Research, Edinburgh Research Station, Roslin, Midlothian EH25 9PS
C. S. Haley
Affiliation:
AFRC Institute of Animal Physiology and Genetics Research, Edinburgh Research Station, Roslin, Midlothian EH25 9PS
R. Thompson
Affiliation:
AFRC Institute of Animal Physiology and Genetics Research, Edinburgh Research Station, Roslin, Midlothian EH25 9PS
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Abstract

Phenotypic and genetic analyses of the litter traits total number born, number born alive and total birth weight were conducted on data from two lines of pigs, line A, a synthetic largely of Landrace origin, and line B, derived from the Large White breed. The data were collected from closed herds of the Cotswold Pig Development Company Limited and comprised 1018 litters in line A and 863 litters in line B. Estimates of heritability and repeatability were low for all traits and consistent with other estimates in the literature, for number born alive being respectively, 0·07 (s.e. 0·04) and 0·15 (s.e. 0·04) in line A and 0·12 (s.e. 0·04) and 0·14 (s.e. 0·04) in line B. There was no evidence of an effect of the size of litter into which a female was born on her subsequent reproductive performance.

Type
Research Article
Information
Animal Production , Volume 49 , Issue 3 , December 1989 , pp. 477 - 482
Copyright
Copyright © British Society of Animal Science 1989

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References

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