Comparison of dietary sodium selenite and selenium nanoparticles on growth performance, liver enzymes and antioxidant status of yellowfin porgy, Acanthopagrus latus

In this study, the effects of both mineral and nanoparticles selenium were investigated on growth performance, liver enzymes, and antioxidant status of yellowfin porgy, Acanthopagrus latus. A total number of 300 fish (average weight = 25±3 g) were randomly distributed in five groups according to according to diet: control (basal diet), nanoSe (1 and 1.5 mg/kg -supplemented diet) and sodium selenite (1 and 1.5 mg/kg -supplemented diet). Fish were fed with experimental diets for six weeks. At the end of the experiment, liver and blood samples obtained to assay the liver and antioxidant enzymes activities. The results showed that addition of 1 and 1.5 mg/kg nanoSe to the diet promoted growth, as weight gain increased significantly in A. latus fed by nanoSe (p<0.05). Also, the highest glutathione peroxide and catalase activity were recorded in treatment containing nanoSe (p<0.05). While the lowest ALT activity were seen in 1.5 mg/kg nanoSe (p<0.05). The lowest level of Malondialdehyde (MDA) was in the liver of fish fed by nanoSe, while there were no significant differences with the control and Sodium Selenite groups (p>0.05). Our findings showed that Selenium nanoparticles had beneficial effects on growth performance and antioxidant defense system of A. latus.