(PBS)-without treatment but injected with (20μl) PBS (served as positive control): Other groups are treated with V. parahaemolyticus and diet as a AgNPs and B. subtilis and without any addition fed on control. Each value is the mean ± SD of three replicates; bar with different letters are statistically significant from each other (t- test; P < 0.05).

Figure 7: Survival (%) of white shrimp 15 days challenged with.