Table 4.
Restricted maximum likelihood heritability (h2) estimates for birth weight, postweaning gain, and marbling score using pedigree and different genomic relationship matrices.
| Birth Weight | Postweaning Gain | Marbling Score | ||||
|---|---|---|---|---|---|---|
| Relationship a | h2 (SE) | N | h2 | n | h2 | n |
| Pedigree a | 0.595 (0.008) | 78,625 | 0.526 (0.010) | 68,846 | 0.538 (0.018) | 33,850 |
| Gall b | 0.573 (0.011) | 16,512 | 0.474 (0.013) | 16,144 | 0.508 (0.017) | 10,898 |
| GF250 c | 0.545 (0.011) | 16,440 | 0.442 (0.012) | 16,068 | 0.471 (0.016) | 10,822 |
| GF250s d | 0.380 (0.023) | 16,440 | 0.270 (0.019) | 16,068 | 0.342 (0.021) | 10,822 |
| GF250r e | 0.066 (0.007) | 16,440 | 0.062 (0.007) | 16,068 | 0.105 (0.009) | 10,822 |
| G50K f | 0.519 (0.011) | 16,440 | 0.437 (0.012) | 16,068 | 0.466 (0.016) | 10,822 |
a Pedigree BLUP including downsampled steers. b 748,804 autosomal and pseudo-autosomal variants from GGP-F250 and BovineHD arrays, filtered for >0.95 call rate and pedigree imputation accuracy. Genomic BLUP (GBLUP) included downsampled steers. c 116,472 filtered variants from GGP-F250. GBLUP excluded downsampled steers. d GGP-F250 subsets selected for trait-specific effects: 551 birth weight; 585 postweaning gain; and 698 marbling score. GBLUP excluded downsampled steers. e Randomly selected GGP-F250 subsets, same size as trait-specific subsets. GBLUP excluded downsampled steers. f 51,496 BovineHD variants common with BovineSNP50 array. GBLUP excluded downsampled steers.