Table 2. Summary statistics of pedigree structure for reference population data (n=16,971)

Item	No. of animals (%)
Animals in pedigree	44,145 (100)
Sires	419 (0.95)
Dams	14,467 (32.77)
Animals with data	16,971 (100)
One parent unknown	8 (0.05)
Both parents unknown	2,353 (13.86)
Both parents known	14,610 (86.09)