Fig. 3. Specific protease activity in Penaeus monodon juveniles fed with experimental diets supplemented with graded level of biofloc in A) Gut and B) Hepatopancreas, Error bars represent mean ± SE. The means with no superscript letter in common indicate significant difference (p b 0.05). The level of biofloc supplementation was 0 (B0), 4 (B4), 8 (B8), and 12% (B12).