Heritability, Phenotypic and Genetic Correlations between Type Ratings and Milk and Fat Production in Holstein-Friesian Cattle

Abstract

SUlV[MARY Intra-sire, intra-herd variance and covariances of daughters and dams were used to estimate heritabilities, and phenotypie and genetic correlations between type ratings and milk and milk fat production records adjusted to a single record basis. Milk and milk fat production records and official type classification ratings of 14,727 Holstein-l%iesian cows and their dams were included in this study.