| abstract |
It is a parasite control agent of fish which contains a folic acid synthesis inhibitor and / or a folic acid activation inhibitor as an active ingredient. The combination of a folic acid synthesis inhibitor and a folic acid activation inhibitor is preferable, and a sulfa agent is preferable as a folic acid synthesis inhibitor. As a folic acid activation inhibitor, a dihydro folic acid reductase inhibitor, a folic acid antagonist, etc. can be used. The parasite control agent can control the parasites of fish by oral administration. Among the fish parasites, it is particularly effective for parasites belonging to the ciliates. |