Table 3.
Carcass characteristics of Angus- and Wagyu-sired cattle raised to a similar days on feed end point—experiment 1
| Item | Treatment 1 | SEM2 | P-value | ||
|---|---|---|---|---|---|
| AN (n = 7) | WA-GD (n = 9) | WA-MD (n = 12) | |||
| Final weight, kg | 555a | 549a | 506b | 44.8 | 0.01 |
| HCW, kg | 353a | 352a | 326b | 32.0 | 0.02 |
| DP, % | 63.73 | 64.21 | 64.24 | 0.799 | 0.74 |
| KPH, % | 2.33c | 3.35a | 2.87b | 0.165 | 0.01 |
| 12th Rib | |||||
| LM area, cm2 | 84.7 | 84.1 | 81.6 | 5.99 | 0.66 |
| Backfat thickness, cm | 2.14 | 2.13 | 1.90 | 0.308 | 0.60 |
| USDA YG3 | 3.85 | 4.09 | 3.64 | 0.367 | 0.45 |
| BCTRC, %4 | 47.79 | 47.26 | 48.35 | 0.855 | 0.42 |
| USDA QG5 | 12.04 | 12.23 | 12.83 | 0.368 | 0.17 |
| Marbling score6 | 652 | 655 | 728 | 36.6 | 0.11 |
| 6th Rib | |||||
| LM area, cm2 | 44.2 | 42.6 | 40.8 | 3.40 | 0.25 |
| Backfat thickness, cm | 2.90 | 3.12 | 3.07 | 0.225 | 0.62 |
| Rib thickness, cm | 7.55 | 6.75 | 6.74 | 0.454 | 0.16 |
| Japanese YG, % 7 | 71.08 | 70.18 | 70.34 | 0.331 | 0.07 |
| Marbling score6 | 684 | 694 | 743 | 37.1 | 0.24 |
1AN = Angus-sired steers selected for a combination of growth and marbling potential, WA-GD = Fukutsuru-sired Wagyu cattle selected for growth potential, WA-MD = Yasufuku-sired Wagyu cattle selected for marbling potential.
2The reported standard error of the mean is the greatest between the different treatments.
3YG = 2.5 + (2.5 × (12th rib fat thickness/2.54)) + (0.2 × % KPH) + (0.0038 × HCW/0.453592)) – (0.32 × (LM area/6.4516)).
4BCTRC (boneless closely trimmed retail cuts) = 51.34 – (2.28 × (12th rib fat thickness)) – (0.462 × % KPH) – (0.02 × (HCW)) + (0.1147 × (LM area)).
5USDA QG is based on a numeric scale: 11 = average choice, 12 = high choice.
6Marbling score is based on a numeric scale: 600-699 = moderate, 700-799 = slightly abundant.
7Japanese YG = 67.37 + (0.13 × (LM area/ 6.4516)) + (0.667 × (6th rib fat thickness/ 2.54)) - (0.025 × (carcass side weight/ 0.453592)) - (0.896 × (6th rib thickness/ 2.54)).
a,bTreatment lsmean estimates within a row, with a different superscript differ (P ≤ 0.05).