Table 6. The effect of dietary microalgae concentration on the expression of cytokines in chicken peripheral blood mononuclear cells1
| Item | Dietary microalgae concentration (%) | SEM | P-value |
| 0 | 0.5 | 1.0 | 1.5 | ANOVA | Linear | Quadratic |
| IL2 | 1.0 | 5.9 | 9.5 | 15.9 | 4.17 | 0.09 | 0.01 | 0.86 |
| IL6 | 1.0 | 2.7 | 17.5 | 7.7 | 4.34 | 0.04 | 0.08 | 0.19 |
| IL22 | 1.0 | 4.2 | 14.4 | 5.3 | 2.73 | 0.01 | 0.06 | 0.03 |
| IL1β | 1.0 | 1.5 | 2.2 | 3.6 | 0.92 | 0.23 | 0.05 | 0.62 |
| IL18 | 1.0 | 1.7 | 4.2 | 4.9 | 1.14 | 0.05 | 0.01 | 1.00 |
| IL17A | 1.0 | 4.2 | 11.1 | 5.3 | 2.43 | 0.04 | 0.08 | 0.07 |
Each value represents the relative gene expression of mean of seven replicates per treatment.