Population

SNP chip

No. significant SNPs

Reference

Canadian Holsteins

1536 SNP Marker Chip

11

Kolbehdari et al. [26]

U.S. Holsteins

BovineSNP50 Bead Chip

20

Cole et al. [28]

Norwegian Red cattle

Affymetrix 25K MIP Array

29

Sodeland et al. [29]

Netherlands Holsteins

BovineSNP50 Bead Chip

1

Wijga et al. [30]

Irish Holstein-Friesian

BovineSNP50 Bead Chip

5

Meredith et al. [31]

Nordic Holsteins

BovineSNP50 Bead Chip

21

Sahana et al. [32]

German Holstein

Unknown

10

Abdel-Shafy et al. [33]