Investigating the impact of preselection on subsequent single-step genomic BLUP evaluation of preselected animals.

ABSTRACT:

Background

Preselection of candidates, hereafter referred to as preselection, is a common practice in breeding programs. Preselection can cause bias and accuracy loss in subsequent pedigree-based best linear unbiased prediction (PBLUP). However, the impact of preselection on subsequent single-step genomic BLUP (ssGBLUP) is not completely clear yet. Therefore, in this study, we investigated, across different heritabilities, the impact of intensity and type of preselection on subsequent ssGBLUP evaluation of preselected animals.

Methods

We simulated a nucleus of a breeding programme, in which a recent population of 15 generations was produced with PBLUP-based selection. In generation 15 of this recent population, the parents of the next generation were preselected using severa

SUBMITTER: Jibrila I 

PROVIDER: S-EPMC7392691 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature