Age-based partitioning of individual genomic inbreeding levels in Belgian Blue cattle

Table 4 Summary statistics for the inbreeding coefficients estimated for the 634 Belgian Blue sires with different methods and using the HD panel

Estimators	mean F	min F	max F
F_G	0.303	0.258	0.375
F_HOM	0.644	0.621	0.683
F_ExHOM	− 0.001	− 0.066	0.111
F_ROH	0.151	0.098	0.237
F_GRM1	0.031	− 0.150	0.150
F_GRM2	0.059	− 0.194	0.245
F_UNI	0.017	− 0.092	0.139
F_PED*	0.042	0.004	0.091

F _G, inbreeding coefficient estimated as the probability of belonging to any of the HBD classes averaged over the whole genome; F _HOM, inbreeding coefficient based on the proportion of homozygous SNPs; F _ExHOM, excess homozygosity estimator; F _ROH, inbreeding coefficient estimated as the proportion of the genome captured by ROH; F _GRM1, inbreeding coefficient based on the diagonal elements of the genomic relationship matrix (dividing all SNP contributions by the same denominator); F _GRM2, inbreeding coefficient based on the diagonal elements of the genomic relationship matrix (dividing each SNP contribution by its own weight 2f _i (1 − f _i), f _i being the frequency of allele i); F _UNI, inbreeding coefficient based on the correlation between uniting gametes; F _PED, inbreeding coefficient estimated from pedigree data
*Estimated on the 313 bulls born after 1999

ISSN: 1297-9686