The objective of this study was to estimate genetic (co)variances for biological parameters associated with growth functions in pig. A total of 51,594 live-weight observations from 10,133 growing pigs were available. Genetic (co)variances were calculated for growth curve parameters for the von Bertalanffy and Gompertz growth functions estimated in either a fixed effects or mixed model framework. Low to moderate heritability estimates existed for parameters of the two growth functions for both the fixed effects (0.14 to 0.46) and mixed (0.33 to 0.38) models. Significant maternal heritabilities were evident for parameters of the Gompertz growth function only.

Jessica M Coyne, Marja-Liisa Sevon-Aimonen, Donagh P Berry, Esa A Mäntysaari, Jarmo Juga, Noirin McHugh

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Genetics of Trait Complexes: Growth and development (Posters), , 604, 2014
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