Incorporation of Fructooligosaccharides in Diets Influence Growth Performance, Digestive Enzyme Activity, and Expression of Intestinal Barrier Function Genes in Tropical Gar (Atractosteus tropicus) Larvae

This study was conducted to investigate the effects of dietary fructooligosaccharides (FOS) on growth, survival rate, digestive enzyms activity, and expression intestinal barrier function genes in tropical gar (Atractosteus tropicus) larvae. A total 960 larvae (0.030 ± 0.006 g) were fed three diets supplemented with increasing FOS concentrations (2.5, 5, 7.5 g kg?1) a control diet for 15 days. Results revealed that kg?1 supplementation improved weight gain, specific growth rate (p < 0.05). Furthermore, 5 increased alkaline protease amylase activities induced an upregulation claudin-17 gene Meanwhile, inclusion mucin 2 (muc-2), tight junction zo-2 claudin-3 In addition, 2.5, promoted downregulation claudin-15 At same time, did not increase pro-inflammatory cytokine il-8 expression. We can conclude improves performance, capacity, could contribute reinforcement Tropical