Effects of dietary xylooligosaccharide on growth performance, enzyme activity and immunity of juvenile grass carp, Ctenopharyngodon idellus

Abstract An 8-week feeding trial was conducted to evaluate the effects of xylooligosaccharde (XOS) on growth, immunity and disease resistance of juvenile grass carp (Ctenopharyngodon idella). Fish (3.05 ± 0.01 g) were fed with diets containing XOS at levels of 0, 0.05 %, 0.1 %, 0.2 %, 0.4 % and 0.6 %. Results showed that the plasma triglyceride content was significantly lower in fish fed dietary 0.05 % and 0.1 % XOS compared to the control group (P