Genetic Variance Estimation over Time in Broiler Breeding Programmes for Growth and Reproductive Traits.

ABSTRACT: Monitoring the genetic variance of traits is a key priority to ensure the sustainability of breeding programmes in populations under directional selection, since directional selection can decrease genetic variation over time. Studies monitoring changes in genetic variation have typically used long-term data from small experimental populations selected for a handful of traits. Here, we used a large dataset from a commercial breeding line spread over a period of twenty-three years. A total of 2,059,869 records and 2,062,112 animals in the pedigree were used for the estimations of variance components for the traits: body weight (BWT; 2,059,869 records) and hen-housed egg production (HHP; 45,939 records). Data were analysed with three estimation approaches: sliding overlapping windows, under f

SUBMITTER: Sosa-Madrid BS 

PROVIDER: S-EPMC10649193 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature