Figure 2.

Effect of dietary curcumin supplement on the immune capacity in Hu sheep in summer. Sheep in Con, Cur1, and Cur2 groups were fed basal diets supplemented with 0 mg, 450 mg, and 900 mg curcumin (per sheep) daily for 35 days, respectively. Plasma was then collected to measure IgA (a), IgM (b) and IgG (c) concentration by ELISA. Data are shown as means ± SEM (n = 12). Bars with different letters denote significant differences (p < 0.05). IgA, immunoglobulin A; IgM, immunoglobulin M; IgG, immunoglobulin G.