Table 1.
Comparison of carcass traits showing the back fat classification and assessment of age effect within the same breed (CHAR and HEAN) and variance between the two breeds
| CHAR (mean ± SE) (n = 13) |
HEAN (mean ± SE) (n = 22) |
Variance between two breeds | |||||
|---|---|---|---|---|---|---|---|
| LOW BF | High BF | Significance (P value) | LOW BF | High BF | Significance (P value) |
Significance (P value) |
|
| Age at slaughter (d) | 466.50 ± 6.76 | 467.00 ± 8.22 | 0.95 | 482.00 ± 7.29 | 475.00 ± 4.77 | 0.39 | < 0.0001 |
| Slaughter mass (kg) | 559.12 ± 40.13 | 558.12 ± 25.71 | 0.94 | 556.08 ± 11.84 | 550.42 ± 19.83 | 0.34 | 0.91 |
| BF thickness (mm) | 5.00 ± 0.41 | 11.25 ± 0.75 | < 0.0001 | 9.00 ± 0.45 | 15.00 ± 0.52 | < 0.0001 | < 0.0001 |
| Cutability (%) | 62.75 ± 0.75 | 56.50 ± 0.87 | < 0.0001 | 58.50 ± 0.62 | 53.17 ± 0.31 | < 0.0001 | < 0.0001 |
| Rib eye area (cm2) | 93.00 ± 9.19 | 79.75 ± 5.85 | 0.17 | 78.33 ± 3.53 | 74.33 ± 3.50 | 0.75 | 0.0139 |
| Marbling score | 452.50 ± 17.01 | 452.50 ± 21.36 | 0.81 | 436.67 ± 23.76 | 503.33 ± 5.58 | 0.04 | 0.3116 |
General Linear Model (GLM) procedure from SAS system was used to evaluate the fixed effects of racial group (CHAR and HEAN), and back fat group (High BF and Low BF, nested within racial group) on carcass traits.