Effects of dietary inositol on growth, feed utilization and blood biochemical index of juvenile pompano ( Trachinotus ovatus)

A 56-day feeding trial on pompano(Trachinotus ovatus) was carried out to study the effects of dietary inositol on its growth,feed utilization and blood biochemical index.Diets with 5 levels of inositol(350 mg·kg-1,458 mg·kg-1,507 mg·kg-1,720 mg·kg-1 and 1 050 mg·kg-1) were fed to pompano at initial weight of(8.30 ±0.11) g,respectively.Weight gain(WG) and special growth rate(SGR) of 720 mg·kg-1 group are significantly higher(P0.05) than those of the other groups.Viscerasomatic index(VSI) is not significantly(P0.05) affected by inositol.Survival of 458 mg·kg-1,507 mg·kg-1 and 720 mg·kg-1 groups are significantly higher than that of 350 mg·kg-1 and 1 050 mg·kg-1 groups(P0.05).The moisture and lipid content of 507 mg·kg-1 group are significantly higher and lower than those of the other groups except the 720 mg·kg-1 one(P0.05),respectively.No significant difference is found in crude protein content(P0.05).The highest glucose(GLU) content is found in 720 mg·kg-1 group,which is significantly higher than that of 350 mg·kg-1 and 458 mg·kg-1 groups(P0.05).Low density lipoprotein cholesterol(LDCL) of 507 mg·kg-1 group is significantly lower than that of the other groups except 1 050 mg·kg-1 one(P0.05).Supplementation of dietary inositol can significantly decrease triacylglycerol(TG) content,but has no effect on total protein(TP),blood urea nitrogen(BUN),total cholesterol(TC) and high density lipoprotein cholesterol(HDLC).