Fig. 4

The effects of BIO-ZnNPs supplemented diets on the activity of the intestinal oxidant/ antioxidant enzymes, malondialdehyde (MDA), reduced glutathione (GSH), and Catalase (CAT), of Nile tilapia, fed diets supplemented with BIO-ZnNPs (30 or 60 mg/kg) or non-supplemented diets for 8 weeks. Data were represented as Mean ± SEM. Values with a different letter superscript are significantly different between groups (ANOVA with post hoc Tukey test, *P (<0.05), **P (<0.01). ***P (<0.001)