Table 1.
Descriptive statistics of carcass characteristics of steers selected for analyses
| Angus/Brahman genetics1 | |||||
|---|---|---|---|---|---|
| Item | Angus | Brangus | Half | Brahman | SD |
| 2012 | |||||
| No. | 9 | 5 | 20 | 14 | |
| HCW, kg | 333 | 339 | 324 | 308 | 25 |
| Rib eye area, cm2 | 75.7 | 70.6 | 77.0 | 73.4 | 6.5 |
| 12th-rib back fat, cm | 1.3 | 1.3 | 1.5 | 1.2 | 0.5 |
| KPH, % | 2.3 | 2.4 | 2.6 | 2.3 | 0.6 |
| Lean maturity2 | 140 | 142 | 146 | 144 | 9 |
| Bone maturity3 | 140 | 140 | 146 | 139 | 7 |
| Marbling score4 | 524 | 344 | 419 | 350 | 86.7 |
| Quality grade5 | 7.8 | 5.8 | 6.8 | 5.6 | 1.2 |
| Yield grade | 3.5 | 3.8 | 3.4 | 3.2 | 0.6 |
| 2013 | |||||
| No. | 12 | 14 | 14 | 43 | |
| HCW, kg | 347 | 329 | 335 | 307 | 26 |
| Rib eye area, cm2 | 79.1 | 74.9 | 77.2 | 75.2 | 8.1 |
| 12th-rib back fat, cm | 1.5 | 1.3 | 1.4 | 1.3 | 0.3 |
| KPH, % | 2.6 | 2.7 | 2.4 | 2.4 | 0.3 |
| Lean maturity | 139 | 145 | 146 | 146 | 9 |
| Bone maturity | 146 | 149 | 151 | 144 | 10 |
| Marbling score | 597 | 481 | 467 | 390 | 88.4 |
| Quality grade | 8.7 | 7.4 | 7.0 | 6.3 | 1.1 |
| Yield grade | 3.6 | 3.5 | 3.4 | 3.2 | 0.5 |
1
Steers (n = 131) were classified into 4 categories based on the percentage of Angus and Brahman genetics. The breed groups were steers that contained 6/32 or less Brahman genetics (Angus), steers that contained 12/32 Brahman genetics (Brangus), steers that contained 14/32 to 18/32 Brahman genetics (Half), and steers that contained 23/32 to 32/32 Brahman genetics (Brahman).
2
100 = A; 200 = B; 300 = C; 400 = D; 500 = E.
3
100 = A; 200 = B; 300 = C; 400 = D; 500 = E.
4
100 = practically devoid; 200 = traces; 300 = slight; 400 = small; 500 = modest; 600 = moderate.
5
4 = standard; 5 = select−; 6 = select+; 7 = choice−; 8 = choice; 9 = choice+; 10 = prime−.