Genomic regions underlying uniformity of yearling weight in Nellore cattle evaluated under different response variables.

ABSTRACT:

Background

In livestock, residual variance has been studied because of the interest to improve uniformity of production. Several studies have provided evidence that residual variance is partially under genetic control; however, few investigations have elucidated genes that control it. The aim of this study was to identify genomic regions associated with within-family residual variance of yearling weight (YW; N = 423) in Nellore bulls with high density SNP data, using different response variables. For this, solutions from double hierarchical generalized linear models (DHGLM) were used to provide the response variables, as follows: a DGHLM assuming non-null genetic correlation between mean and residual variance (r_mv ≠ 0) to obtain deregressed EBV for mean (dEBV_m

SUBMITTER: Iung LHS 

PROVIDER: S-EPMC6097312 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature