Holstein and Jersey estimated variance components and heritabilities for milk, fat, and protein yields, productive life (PL), daughter pregnancy rate (DPR), somatic cell score (SCS), fat percent (fat%) and protein percent (protein%) using four different models.

HO = Holstein; JE = Jersey.
aMA = only additive effects included; MAD = additive and dominance (values) effects included; MAD2 = additive and dominance (deviations) effects included; and MAD3 = additive and dominance effects included as well as cows with genotype probabilities derived using genotyped ancestors.
bVar = variance components;  = additive variance,  = dominance variance,  = residual variance for MAD,  = residual variance for MAD2,  = residual variance for genotyped cows,  = residual variance for cows with genotype probabilities derived from genotyped sire and dam,  = residual variance for MAD3,  = additive heritability, and  = dominance heritability.