Genetic evaluation of eggshell color based on additive and dominance models in laying hens.

ABSTRACT: OBJECTIVE:Eggshells with a uniform color and intensity are important for egg production because many consumers assess the quality of an egg according to the shell color. In the present study, we evaluated the influence of dominant effects on the variations in eggshell color after 32 weeks in a crossbred population. METHODS:This study was conducted using 7,878 eggshell records from 2,626 hens. Heritability was estimated using a univariate animal model, which included inbreeding coefficients as a fixed effect and animal additive genetic, dominant genetic, and residuals as random effects. Genetic correlations were obtained using a bivariate animal model. The optimal diagnostic criteria identified in this study were: L* value (lightness) using a dominance model, and a* (redness), and b* (yello

SUBMITTER: Guo J 

PROVIDER: S-EPMC7322644 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature