Disinfection of equipments for aquaculture and fertilized eggs by ozonated seawater

Abstract

Effects of ozonated seawater on disinfection of equipments for aquaculture, fertilized eggs (barfin flounder) and live feeds were investigated by monitoring the viable bacterial counts. Scoopnet, bolting cloth, canvas, hose, beaker, bucket, rubber boot, fertilized eggs, rotifer, Artemia and Thalassiosira were treated with total residual oxidants (0.5 mg/l). Treatment for 30 minutes reduced viable bacterial counts of equipments by over 99.9%. A similar result was obtained on fertilized eggs by treatment for 10 minutes. However, its treatment was not effective for live feeds.