Table 2.
Number and average size of contemporary group (CG) for analysis of production traits with the reproductive traits heifer pregnancy and stayability in Red Angus cattle
| Trait | Heifer pregnancy models | Stayability models | ||
|---|---|---|---|---|
| Number of unique CG | Average CG size | Number of unique CG | Average CG size | |
| Heifer pregnancy | 2,274 | 14 | ||
| Stayability | 462 | 94 | ||
| Birth weight | 5,494 | 26 | 3,569 | 44 |
| Pre-weaning gain | 4,349 | 31 | 4,779 | 30 |
| Weaning weight | 4,351 | 31 | 4,776 | 30 |
| Post weaning gain | 5,415 | 19 | 4,678 | 19 |
| Yearling weight | 5,424 | 19 | 4,474 | 20 |
| Scrotal circumference | 1,210 | 16 | 832 | 18 |
| Rib eye area | 83 | 28 | 46 | 36 |
| Backfat | 84 | 29 | 47 | 36 |
| Marbling | 77 | 29 | 39 | 37 |
| Hot carcass weight | 84 | 29 | 47 | 37 |
| Ultrasound rib eye area | 2,573 | 15 | 2,105 | 13 |
| Ultrasound backfat | 2,574 | 15 | 2,099 | 13 |
| Ultrasound intramuscular fat | 2,589 | 15 | 2,104 | 13 |
| Teat score | 148 | 7 | ||
| Suspension score | 160 | 7 | ||
| Mature weight | 1,597 | 19 | ||
| BCS | 1,264 | 22 | ||