Original scientific paper

https://doi.org/10.18047/poljo.21.1.sup.34

ESTIMATION OF GENETIC PARAMETERS FOR PRODUCTION TRAITS IN PIG BREEDS IN CROATIA

Anamarija Smetko ; Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, Croatia
Dubravko Škorput ; University of Zagreb, Faculty of Agriculture, Svetošimunska 25, 10000 Zagreb, Croatia
Zoran Luković ; University of Zagreb, Faculty of Agriculture, Svetošimunska 25, 10000 Zagreb, Croatia
Željko Mahnet ; Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, Croatia
Vedran Klišanić ; Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, Croatia
Marija Špehar ; Croatian Agricultural Agency, Ilica 101, 10000 Zagreb, Croatia

Abstract

Genetic parameters for backfat thickness and test time were updated and used in genetic evaluation for field tested pigs in Croatia. Data consisted of 9,406 animals with measurements for production traits recorded from 2000 to 2014. The number of animals in pedigree was 10,728. Production traits were modelled using a single trait animal model including the following fixed class effects: breed, sex, classifier, season, and herd. Weight at the end of the test was included as linear regression in the model for backfat. Direct additive genetic effect, interaction herd-year-season of testing and common litter effect were included as random effects. Variance components were estimated using REML method as implemented in the VCE-6 program. The estimated heritabilities were 0.28±0.03 for backfat thickness and 0.12±0.02 for test time. Litter effect accounted from 15 to 24% of phenotypic variation, while herd-year-season of testing explained additional 24 and 28% of variability for analysed traits.

Keywords

genetic parameters; pig, breeding; heritability; genetic trend

Hrčak ID:

150666

URI

https://hrcak.srce.hr/150666

Publication date:

2.9.2015.

Visits: 1.474 *