An Evaluation of Replacing Fish Meal with Fermented Soybean Meal in Diet of Hybrid Snakehead (Channa argus × Channa maculata): Growth, Nutrient Utilization, Serum Biochemical Indices, Intestinal Histology, and Microbial Community

Table 8

Effect of fermented soybean meal substituting fish meal on intestinal morphology of hybrid snakehead.

Items	CON	FM-30	FM-25	FM-20	FM-15
Muscle thickness (μm)	^a	^a	^ab	^b	^b
Villus height (μm)	^a	^b	^c	^c	^c
Villus width (μm)

In the same row, values with different letter superscripts indicate significant differences ().