Effects of dietary administration of Formic acid on mucosal immune, innate immune parameters of common carp fingerling (Cyprinus carpio)

The present study was performed to investigate the effect of different levels of formic acid on mucus and serum immunity parameters in Cyprinus carpio. For this purpose, 360 fish with average weight of 21+ 5 g were fed on diets supplemented with 0%, 0.5%, 1% and 2% Formic Acid (FA) for 8 weeks. At the end of feeding trial, sampling was done from mucus and blood. Mocus protease and mocus and serum immunoglobin didn’t show significant differences (P≥0.05) in FA treatments compared to control. Mocus and serum lysozyme showed significant increase (P≥0.05) in 2% FA treatment compared to other groups. These results revealed beneficial effects of lysozyme and protease as immune parameters is using 2% dietary FA in carp.