Genomic and phenotypic selection indices for decreased birth weight, shortening fattening period, and regulating total weight gain in beef cattle.

ABSTRACT:

Objective

This study aimed to develop genomic and phenotypic indices for beef cattle selection that afford progeny with reduced birth weight and fattening period. The indices should also allow regulating total weight gain during the fattening period and avoid marked increases of inbreeding.

Methods

Whether addition of constraint on total weight gain to constraints on body weight gain at up to four specific time points during the fattening process was effective for the weight gain until the end of the fattening period was examined in two selection indices with the selection trait being a phenotypic or a genomic breeding value random regression coefficient.

Results

Both indices afforded cattle with desired weight gains at specific time points and desired total weight ga

SUBMITTER: Togashi K 

PROVIDER: S-EPMC11725746 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature