Propolis Has Favorable Impact on Fish

Effects of Various Propolis Concentrations on Biochemical and Hematological Parameters of Rainbow Trout (Oncorhynchus mykiss)
Ecotoxicology and Environmental Safety, Volume 72, Issue 7, October 2009, Pages 1994-1998

Biochemical and hematological parameters in blood of rainbow trout treated to various concentrations of propolis for 96 h were determined.

Total leukocyte count and granulocytes values increased in 0.02 and 0.03 g/L propolis groups. There was a decrease in agranulocytes erythrocytes, hemoglobin and hematocrit values for fish exposed to 0.02 and 0.03 g/L propolis. MCV and MCH values were significantly increased; 0.02 and 0.03 g/L propolis caused an increase in the levels of glucose, blood urea nitrogen, triglyceride, total cholesterol, lactate dehydrogenase, amylase and gamma glutamyltransferase. There was a decrease in the levels of aspartate aminotransferase and alkaline phosphatase. Hematological and biochemical protective effects of 0.01 g/L propolis were investigated.

Dose-dependent effects of propolis on blood of fish can be favorable, opening new perspectives of investigation on their biological properties and utilization.