Table 2. Effect of breed (in rows) and aging time (in columns) on the activity of CTSB, CTSD, and CTSD/CTSB ratio.
| Breed | ||||
|---|---|---|---|---|
| Variable | Aging time | AV | AM | Sign. |
| CTSB | 2 h | 2.868 | 2.765 a | NS |
| (mU mg−1 protein) | 12 h | 3.465 | 3.920 b | * |
| 24 h | 3.220 | 3.758 b | ** | |
| Sign. | NS | *** | ||
| CTSD | 2 h | 12.620 a | 17.010 b | *** |
| (U mg−1 protein) | 12 h | 14.152 b | 17.000 b | *** |
| 24 h | 12.937 a | 15.118 a | ** | |
| Sign. | ** | * | ||
| Ratio CTSD/CTSB | 2 h | 4.425 | 6.225 b | * |
| 12 h | 4.100 | 4.325 ab | NS | |
| 24 h | 4.025 | 4.025 a | NS | |
| Sign. | NS | ** | ||
Within a breed, means in the same column followed by different letters are significantly different at P < 0.05; NS: not significant, *P < 0.05, **P < 0.01; ***P < 0.001.