Effects of Probiotics and Its Extracellular Products on the Growth Performance, Immune Response, and Aeromonas hydrophila Resistance of Grass Carp

Figure 2

Effect on the intestinal tract of grass carp fed the different diets for 3 weeks. Intestinal villus length (a), depth of the recess (b), and thickness of the muscle layer (c). The data are the average of three replicates. Different numbers indicate significant differences between different treatment groups ().

(a)

(b)

(c)