Genome-wide scan highlights the role of candidate genes on phenotypic plasticity for age at first calving in Nellore heifers.

ABSTRACT: Age at first calving (AFC) plays an important role in the economic efficiency of beef cattle production. This trait can be affected by a combination of genetic and environmental factors, leading to physiological changes in response to heifers' adaptation to a wide range of environments. Genome-wide association studies through the reaction norm model were carried out to identify genomic regions associated with AFC in Nellore heifers, raised under different environmental conditions (EC). The SNP effects for AFC were estimated in three EC levels (Low, Medium, and High, corresponding to average contemporary group effects on yearling body weight equal to 159.40, 228.6 and 297.6 kg, respectively), which unraveled shared and unique genomic regions for AFC in Low, Medium, and High EC levels, that

SUBMITTER: Mota LFM 

PROVIDER: S-EPMC7160148 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature