Genetic evaluation of longevity in Australian Angus cattle using random regression models.

ABSTRACT: Cow longevity is an economically important trait for beef breeders directly impacting the profitability and sustainability of beef cattle production systems. Despite its great importance, early selection for longevity is complex because the true longevity of a cow is not known until the end of her life. In this study, we aimed to estimate variance components and genetic parameters for 2 binary measures of cow longevity in Australian Angus cattle population. Traditional longevity (TL) represented the cow's ability to avoid culling after the first calving while functional longevity (FL) also accounted for calving events while the cow was present in the herd. Five datasets consisting of animals culled for different reasons were created and evaluated separately to compare the estimates of vari

SUBMITTER: Aliloo H 

PROVIDER: S-EPMC11914885 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature