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Online Journal of Veterinary Research©
Volume 26 (6): 422-428, 2022.
Effect of ozone on survival of Giardia duodenalis cysts.
Fadia AL-Kayat(1); M.A.AL-Zuhairy(2) and May Hameed Kawan(3)
1Basic Sciences,Dentistry College, 2Public Health, 3Parasitology Veteterinary College Baghdad University
AL-Kayat F, AL-Zuhairy MA, Kawan MH., Effect of ozone on survival of Giardia duodenalis cysts, Onl J Vet Res., 26 (6): 422-428, 2022. We report effect of ozone disinfectant on Giardia duodenalis cysts with dechlorinated water at 25șC and pH 8.2. Viability of cysts was determined by vital stain Eosine Y. Ozone was bubbled at 0.05, 0.1 and 0.2 mg/L with 2x104cyst/ml for 1, 3, 5 and 10 minutes Ozone was then removed by 10% sodium thiosulfate. Cysts viability was measured by hemocytometer stained with Eosin Y under 40X lens. Results showed thaty 0.,05 ozone only killed 12-36% 1.0 12 to 80% ans 2 90 100% from 1 to 10 min exposure (P < 0.05).
Key word:Giardia duodenalis, ozone, vital dye