| Formulations | Rosemary extract mg/kg | Oregano extract mg/kg | Sodium erythorbate mg/kg |
| CF | 0 | 0 | 0 |
| F1 | 0 | 0 | 500* |
| F2 | 1000 | 0 | 0 |
| F3 | 0 | 1000 | 0 |
| F4 | 1000 | 1000 | 0 |