Comparison between repeatability, reproductive stage stratified repeatability, and relative risk models for prediction of breeding values for functional survival in rotationally crossbred sows.

ABSTRACT:

Background

The aim of this study was to compare different statistical models for predicting breeding values for sow survival with right-censored phenotypes from rotationally crossbred and commercial sows. We tested two hypotheses. First, we hypothesized that single-trait relative risk models predict more accurate breeding values than single-trait linear repeatability models. Second, we hypothesized that a reproductive stage stratified linear repeatability model predicts more accurate breeding values than the standard single-trait linear repeatability models. The single-trait models predict breeding values for survival between farrowings, while the reproductive stage stratified models predict breeding values for both survival between a farrowing and the next service, and survival be

SUBMITTER: Poulsen BG 

PROVIDER: S-EPMC12715952 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature