Table 4.
Immune response (log10) of broiler chickens fed different levels of summer savory extract (SSE).
| SSE (mg/kg) | Immune Response Criteria | ||||||
|---|---|---|---|---|---|---|---|
| IgG (28 d) | IgG (42 d) | IgM (28 d) | IgM (42 d) | ND (42 d) | IBD (42 d) | IB (42 d) | |
| 0 (control) | 1.3 | 2.8 | 2.0 | 2.3 | 4.7 | 3.8 | 1.8 |
| 100 | 1.3 | 3.8 | 1.7 | 3.7 | 4.7 | 3.8 | 2.7 |
| 200 | 2.0 | 3.3 | 1.3 | 3.7 | 7.3 | 3.8 | 2.5 |
| 300 | 2.3 | 4.0 | 1.3 | 3.7 | 6.7 | 3.6 | 2.8 |
| 400 | 1.0 | 3.3 | 1.7 | 3.0 | 6.7 | 3.8 | 2.8 |
| SEM | 0.316 | 0.466 | 0.342 | 0.342 | 0.428 | 0.148 | 0.199 |
| p-Value | |||||||
| L | * | ns | ns | * | ** | ns | ** |
| Q | * | ns | ns | * | * | ns | ns |
SEM: standard error of the means; ND: Newcastle disease; IBD: infectious bursal disease; IB: infectious bronchitis. Orthogonal contrasts: L = linear, Q = quadratic; ns: not significant; *p < 0.05; ** p < 0.01.