Estimated breeding values (EBVs) and genomic enhanced breeding values (GEBVs) for milk production of young genotyped Holstein bulls were predicted us­ing several mixed models methodologies of BLUP, including huge number of SNP markers from genetic chips. A conventional BLUP – Animal Model with fixed and random effects and relationship between animals in a form of Lactation Model or Ran­dom Regression Test-Day-Model; Ridge Regression RRBLUP calculating values for all genetic SNP markers; GBLUP using Realised Genomic Relationship; Single Step procedure ssGBLUP with entire file of nation-wide phenotype records of cows and combined pedigree and genomic relationship; and One-Step Blending procedure with deregressed proofs of bulls were used.