Genetic and phenotypic parameters for body (BW42), carcass (ECW), and organs weight at 42 d of age, and haematocrit value (HV) were estimated in an F2 resource population with a multi-trait animal model. Heritability estimates were low for heart and lungs weight, and HV (0.10 to 0.11), and moderate to high for BW42, ECW, liver and gizzard weights (0.21 to 0.56), indicating that the latter traits are mostly controlled by genes with additive effects. Correlations were positive and varied from moderate to high for all traits, except for HV, indicating that selection for BW42 leads to an increase in the organs weight, although not in the same proportion.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume , , 07.24, 2006
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