growth performances and hemato-immunological responses of common carp (cyprinus carpio linnaeus, 1758) to fermented aspergillus oryzae

The present study investigates the effects of varying levels of dietary fermented aspergillus oryzae (0 g kg1 as control group, 10, 20 and 30 g kg1) on performance and haematoimmunological indices of common carp (cyprinus carpio) fingerlings. common carp fingerlings (n=240, w=4.56 ±0.17 g) were supplied, randomly stocked in 12 aquaria and fed with experimental diets for 7 weeks. the results revealed no significant differences between performance parameters of fermented a. oryzae fed test and control diets (p˃0.05). also, evaluation of haematological parameters (rbc, hct, hb) and white blood cell (wbc) counts showed no notable changes between experimental groups (p˃0.05). however, respiratory burst activity was meaningfully higher in fish fed fermented a. oryzae compared to control group (p<0.05). the present results showed that possible effects of administration of fermented a. oryzae on immune responses in carp fingerlings.