Dietary Sodium Butyrate Changed Intestinal Histology and Microbiota of Rainbow Trout (Oncorhynchus mykiss), but Did Not Promote Growth and Nutrient Utilization

Table 7

Effect of dietary sodium butyrate on intestinal histology of rainbow trout.

Items	NaB supplementation in high fishmeal diet			NaB supplementation in low fishmeal diet			Two-way ANOVA
	0.0	1.0	2.0	0.0	1.0	2.0
Muscle thickness/μm	^ab	^abc	^bc	^c	^ab	^a	0.716	0.446	0.005
Villus height/μm	^c	^ab	^b	^c	^c	^a	0.094	0.000	0.000
Villus width/μm		^b	^b	^b	^a	^b	0.000	0.001	0.001