Genetic parameters for individual birth and weaning weight of Large White pigs - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Journal of Animal Breeding and Genetics Year : 2000

Genetische Parameter für Geburtsgewicht, Absetzgewicht und Würfgrösse bei Large White Schweinen

Genetic parameters for individual birth and weaning weight of Large White pigs

Abstract

Dara from a French experimental herd recorded between 1990 and 1997 were used to estimate genetic parameters for individual birth and weaning weight, as well as litter size of Large White pigs using restricted maximum likelihood (REML) methodology applied to a multivariate animal model,, In addition to fixed effects the model included random common environment of litter, direct and maternal additive generic effects. The data consisted of 1928 litters including individual weight observations from 18151 animals for birth weight and from 15 360 animals for weaning weight with 5% of animals transferred to a nurse, Estimates of direct and maternal heritability and proportion of the common environmental variance for birth weight were 0.02, 0.21 and 0.11, respectively, The corresponding values for weaning weight were 0.08, 0.16 and 0,23 and for litter size 0.22, 0.02 and 0,06, respectively The direct and the maternal genetic correlations between birth and weaning weight were positive (0.59 and 0.76). Weak positive (negative) genetic correlations between direct effects on weight traits and maternal effects on birth weight (weaning weight) were found.- Negative correlations were found between direct genetic effect for litter size and maternal genetic effects on all three traits. The negative relationship between litter size and individual weight requires a combined selection for litter size and weight.
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Dates and versions

hal-03363087 , version 1 (03-10-2021)

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Daniel Kaufmann, Andreas Hofer, Jean Pierre Bidanel, Niklaus Künzi. Genetic parameters for individual birth and weaning weight of Large White pigs. Journal of Animal Breeding and Genetics, 2000, 117, pp.121-128. ⟨10.1111/j.1439-0388.2000x.00238.x⟩. ⟨hal-03363087⟩
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