TABLE 3.
Effect of supplemental multi-enzyme on the egg quality of aged breeding hens (n = 70/group).
| Item | DC1 | CE2 | SEM | P-value |
| Egg index | 1.3 | 1.3 | 0.0 | 0.36 |
| L | 59.2 | 59.2 | 0.3 | 0.93 |
| a | 18.7 | 18.5 | 0.2 | 0.53 |
| b | 30.1 | 29.6 | 0.1 | 0.07 |
| Shell strength (kg/cm2) | 4.0 | 4.0 | 0.1 | 0.67 |
| Egg weight (g) | 61.1 | 61.7 | 0.4 | 0.48 |
| Yolk color | 7.7a | 7.0b | 0.1 | 0.00 |
| Egg albumen height | 5.9b | 6.2a | 0.1 | 0.02 |
| Haugh Unit | 75.0b | 77.5a | 0.6 | 0.03 |
| Eggshell thickness | 0.4 | 0.4 | 0.0 | 0.67 |
a,bDifferent superscript within a row means significantly different (P < 0.05).
1DC, dietary control (basal diet).
2CE, basal diet + 0.2 g/kg complex enzymes.