Fearful and Associated Responses of Caged White Leghorn Hens: Genetic Parameter Estimates ,

Data were obtained from hens kept in three-bird cages in two, full-year experiments. Feather damage and loss scores, several fear-indicating variables, and measures of egg production were analyzed to obtain estimates of heritabilities and genetic and phenotypic correlations. Heritability estimates were slightly biased because data on individual hens were not available for most traits. Heritability estimates of productivity traits were fairly...