Additional file 1 of Dietary novel alkaline protease from Bacillus licheniformis improves broiler meat nutritional value and modulates intestinal microbiota and metabolites

Additional file 1: Fig. S1. Effects of novel protease feed on growth performance (A). Effects of novel protease feed on antioxidant capacity of breast muscle (B). a−c Different lowercase letters indicate significant difference between groups (P < 0.05)