Table 4. Humoral or cellular immunity parameters for broiler chickens or laying hens^*.

^*Data are expressed as the mean ± SEM. ^†Peripheral mononuclear cells (10⁶) were stimulated with 5 µg concanavalin A at 41℃ for 72 h in a 5% CO₂ incubator and the culture supernatants were collected to measure interferon-γ (INF-γ) production. ^‡Significant difference (p value): BS vs. BE (0.024). ^§INF-γ concentrations in all the culture supernatants were under the detection level.