Effects of dietary glycinin on the growth performance, immunity, hepatopancreas and intestinal health of juvenile Rhynchocypris lagowskii Dybowski

Abstract This study was to evaluate the effects of glycinin on the growth, digestion, immune function, antioxidant capacity, and hepatopancreas and intestinal morphology of juvenile Rhynchocypris lagowskii Dybowski (R. lagowskii Dybowski). Graded levels (0, 10, 20, 40 and 80 g/kg) of isolated glycinin were added to the basal diets to formulate five experimental diets containing 0.0, 7.6, 15.5, 30.8 and 60.4 g/kg immunologically active glycinin, respectively. Five diets were used to feed R. lagowskii Dybowski for 8 weeks. Results showed that the weight gain rate and specific growth rate of fish were significantly reduced by dietary 40–80 g/kg glycinin (P