Table 2.
Summary of pedigree analysis from 4-generation pedigrees of the REF, RA, TP, and AG samples
| Sample | Cohort (N) | ||||||
|---|---|---|---|---|---|---|---|
| Reference | Halter (23) | Pleasure (22) | Reining (23) | Working cow (22) | Cutting (20) | Racing (22) | All (132) |
| Total pedigree size | 477 | 455 | 425 | 393 | 295 | 480 | 2185 |
| Sires of proband | 23 | 22 | 23 | 22 | 20 | 22 | 132 |
| Thoroughbred | 20 | 6 | 1 | 3 | 1 | 84 | 112 |
| Random | |||||||
| Total pedigree size | 411 | 373 | 408 | 311 | 255 | 362 | 1919 |
| Sires of proband | 22 | 18 | 18 | 17 | 14 | 19 | 106 |
| Thoroughbred | 19 | 6 | 1 | 1 | 1 | 81 | 106 |
| Top performers | |||||||
| Total pedigree size | 365 | 342 | 382 | 301 | 236 | 360 | 1797 |
| Sires of proband | 17 | 16 | 18 | 13 | 9 | 18 | 86 |
| Thoroughbred | 0 | 8 | 1 | 2 | 1 | 85 | 94 |
| Across group | AG1 (20) | AG2 (20) | AG3 (20) | ||||
| Total pedigree size | 464 | 457 | 432 | ||||
| Sires of proband | 20 | 18 | 20 | ||||
| Thoroughbred | 10 | 35 | 18 | ||||
Given is the total number of horses in each pedigree, the number of sires represented by the proband individuals, and the representation of Thoroughbreds. N represents the number of proband individuals in each performance group.