Fig. 3

Impacts of CUR-NPs (30 mg kg-1) or SP (5 g kg-1) dietary supplementation on Nile tilapia intestinal digestive enzymes activities regarding amylase (A), lipase (B), and protease (C). Data were presented as mean ± SE (n = 5). The one-way ANOVA was used using Tukey’s post hoc test to determine the significant variance. *, ** were significant differences at P ≤ 0.05, and P ≤ 0.01, respectively. Three groups were named as; Cont. control group, CUR-NPs and SP, dietary supplementation with curcumin nano-particles or Spirulina platensis, respectively