Assessment of long-term trends in genetic mean and variance after the introduction of genomic selection in layers: a simulation study.

ABSTRACT: Nucleus-based breeding programs are characterized by intense selection that results in high genetic gain, which inevitably means reduction of genetic variation in the breeding population. Therefore, genetic variation in such breeding systems is typically managed systematically, for example, by avoiding mating the closest relatives to limit progeny inbreeding. However, intense selection requires maximum effort to make such breeding programs sustainable in the long-term. The objective of this study was to use simulation to evaluate the long-term impact of genomic selection on genetic mean and variance in an intense layer chicken breeding program. We developed a large-scale stochastic simulation of an intense layer chicken breeding program to compare conventional truncation selection to genom

SUBMITTER: Pocrnic I 

PROVIDER: S-EPMC10206274 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature