studyon hematologyand serum biochemistry ofcommon carp(cyprinus carpio ) after lowcadmium concentration exposure

high concentration of heavy metals or long time exposure to low concentrations of these metals can usually decrease the hematological indices in fish. therefore the aim of this study was to indicate changes in hematology and serum chemistry of common carp (cyprinus carpio) after low cadmium concentration exposure. 60 apparently healthy common carp (mean weight of 700g) divided in two groups and transfred to 1000 liter indoor fiberglass tanks under controlled conditions. treatment group was exposed to low concentration of cadmium (30ppb). blood were exsanguinated randomly from 5 fish in each group through the caudal vein at days 15 and 30 of exposure. the hematological and biochemical parameters (wbc, rbc, different count, hematocrit, total protein, albumin and globulin concentrations, albumin: globulin ratio, ldh, alt, and ast) were determined. results revealed that wbc counts decreased significantly on the 15th day of exposure (p