Fig. 1.

The digestive enzyme activity of pancreas, duodenum and jejunum in piglets at 21 days of age as affected by dietary AGP and MOA supplementation. (A) Trypsin activity. (B) Lipase activity. (C) Amylase activity. (D) Chymotrypsin activity. Control (Ctrl): a corn soybean meal-based diet. AGP: a basic diet with 75 mg/kg of chlortetracycline. MOA: a basic diet with 1500 mg/kg of MOA. Values are indicated as means ± SEM. Bar with the asterisk (*) level suggested the degree of significant difference (* 0.01 < P < 0.05, ** 0.001 < P < 0.01). n = 4