©2021-2033. All Rights Reserved. Online Journal of Veterinary Research . You may not store these pages in any form except for your own personal use. All other usage or distribution is illegal under international copyright treaties. Permission to use any of these pages in any other way besides the before mentioned must be gained in writing from the publisher. This article is exclusively copyrighted in its entirety to OJVR. This article may be copied once but may not be, reproduced or re-transmitted without the express permission of the editors. This journal satisfies the refereeing requirements (DEST) for the Higher Education Research Data Collection (Australia). Linking:To link to this page or any pages linking to this page you must link directly to this page only here rather than put up your own page.


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