Effects of different concentration pollen on biochemical-hematological changes and paraoxanase activity in Rainbow trout

Bee-collected pollen (bee pollen) is reported as a health food with a vast range of nutritional and therapeutic effects. Biochemical and hematological parameters in blood of rainbow trout treated to various concentrations of pollen (0.5, 2.5, 5, 10, 20 and 30 ppm) for 96 h were determined. The levels of total protein, creatinine, chloride and sodium in fish which exposed to different concentrations of pollen were not changed (P>0.05) as compared with the control group. In this study, the highest total antioxidant capacity of pollen were determined at 10 ppm concentration and paraoxonase activity was not observed in the fish serum. It is concluded that concentration-dependent effects of pollen on blood of fish can be favorable in disease prevention.