Genotype-by-environment interaction in Holstein heifer fertility traits using single-step genomic reaction norm models.

ABSTRACT:

Background

The effect of heat stress on livestock production is a worldwide issue. Animal performance is influenced by exposure to harsh environmental conditions potentially causing genotype-by-environment interactions (G × E), especially in highproducing animals. In this context, the main objectives of this study were to (1) detect the time periods in which heifer fertility traits are more sensitive to the exposure to high environmental temperature and/or humidity, (2) investigate G × E due to heat stress in heifer fertility traits, and, (3) identify genomic regions associated with heifer fertility and heat tolerance in Holstein cattle.

Results

Phenotypic records for three heifer fertility traits (i.e., age at first calving, interval from first to last service, and concepti

SUBMITTER: Shi R 

PROVIDER: S-EPMC7968333 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature