Effect of ozonated water on the blood picture of the common carp Cyprinus carpio infected with Aeromonas hydrophila


A total of 80 specimens of common carp Cyprinus carpio were used ranged in weight between 100-120g and in length between 20-27 cm. Effect of ozonated water were investigated on the fish as well as Aeromonas hydrophila pathogenic bacteria. Fish were distributed randomly between eight aquariums (70x40x40 cm) with two replicates for each treatment. Three concentrations of ozonated water were used (0.25, 0.50 and 0.75 mg / L), the last two aquarium were the control with no ozonated water through the period of three weeks. All four groups were injected intramuscularly by Aeromonas hydrophila at 107 CUF/ 100 gm body weight .Results of blood picture test showed a significant differences (p<0.01) between the three treatments containing ozonated water compared with control treatment .It can be concluded that the possibility improvement the blood picture of fish affected with Aeromonas hydrophila .