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

Table 2

Effect of dietary sodium butyrate on the growth performance of rainbow trout.

Items	NaB supplementation in high fishmeal diet g/kg			NaB supplementation in low fishmeal diet g/kg			Two-way ANOVA
	0.0	1.0	2.0	0.0	1.0	2.0
IBW/g
FBW/g	^a	^ab	^abc	^bc	^c	^bc
WG/%	^a	^ab	^ab	0^bc	^c	^bc
FCR	^a	^ab	^abc	^bc	^c	^bc
SR/%
K/(g/cm^3)
VSI/%
HSI/%

IBW: initial body weight; FBW: final body weight; WG: weight gain; FCR: feed conversion ratio; SR: survival ratio; condition factor; VSI: viscerosomatic index; HSI: hepatosomatic index. In the same row, values without letter or with the same letter superscripts mean no significant difference (), while with different small letter superscripts mean significant difference (). : dietary fishmeal level; : sodium butyrate level. The same as the following tables.