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Estimation of Genetic (Co)variances of von Bertalanffy and Gompertz Growth Function Parameters in Pigs

Friday, August 22, 2014
Posters (The Westin Bayshore)
Jessica M Coyne , Teagasc Moorepark, Fermoy, Cork, Ireland
Marja-Liisa Sevon-Aimonen , MTT Agrifood Research Finland, Jokioinen, Finland
Donagh P Berry , Animal & Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
Esa A. Mäntysaari , MTT Agrifood Research Finland, Jokioinen, Finland
Jarmo Juga , Department of Agricultural Sciences, University of Helsinki, Helsinki, Finland
Noirin McHugh , Teagasc Moorepark, Fermoy, Ireland
Abstract Text: 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.

Keywords:

pigs

genetic parameters

growth functions

See more of: Posters: Genetics of Trait Complexes: Growth and Development (Group 2)
See more of: Genetics of Trait Complexes: Growth and development
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