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

Table 8

Intestinal microbial diversity index of rainbow trout.

Items	NaB supplementation in high fishmeal diet		NaB supplementation in low fishmeal diet		Two-way ANOVA
	0.0	2.0	0.0	2.0
Sobs	^b	^b	^ab	8^a	0.003	0.299	0.572
Chao	^b	^b	^ab	^a	0.008	0.170	0.893
Shannon	^b	^b	^ab	^a	0.023	0.248	0.419
Coverage	0.999	0.999	0.999	0.999	0.052	0.512	0.941

Sobs: the observed richness; Chao: the Chao1 estimator; Shannon: the Shannon diversity index; Coverage: the Good’s coverage.