PREVENTION OF ECTOPARASITE IN WATER-SURFACE FISH FARMING AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method capable of simply controlling ectoparasites in the water-surface fish farming without giving damage by ozone gas to farmed fishes and shells in no need of fresh water bathing or medicinal bathing giving fishes and shells stress and to provide an apparatus therefor. ;SOLUTION: This process is for controlling ectoparasites on fishes and shells farmed in crawls 16 set on the sea or, lake surface or in the water and uses an ozone-generating means equipped with ozone gas distributor such as bubbling pipes 14, 15 which bubble ozone gas in the water near the crawls on their outside or inside and with an ozone generating unit 1. Ozone is generated from the generating/means and bubbled in the water in a concentration of 0.1-0.6g/m³.;COPYRIGHT: (C)1997,JPO