Figure 4

Microbial diversity in the distal gut of Nile tilapia. (a) Shannon index, (b) observed richness, and structure shown by (c) PCoA analysis based on Bray–Curtis distance and the correlation between microbial community structure and growth-related parameters. BW, body weight, ADC, apparent digestibility coefficient. Acetic acid, butyric acid and propionic acid are the concentrations from the distal gut. CON-CON, no enzymes or probiotics added; CON-PRO, probiotics added; ENZ-CON, enzymes added; ENZ-PRO, enzymes and probiotics added.