near-significantp = 0.051
Thermal processing of food decreases gut microbial diversity TG led to significantly lower Shannon index diversity in the catfish gut ( p < 0.05) and had near-significant effects on reduced species evenness ( p = 0.051 for Simpson index) and species richness ( p = 0.075 for observed species and p = 0.051 for Chao1) compared with NG (Fig. 2a ).