Fish parasitic disease control agent and feed

摘要

An object of the present invention is to provide an additive and feed for controlling diseases caused by parasites of fish, characterized by containing β-1,4-mannobiose in fish culture. The control agent and feed for fish parasites according to the present invention are characterized by containing β-1,4-mannobiose. The control agent for fish parasites of the present invention can reduce the number of parasite cysts and improve diseases caused by parasites by adding it to the feed or using it as a feed as it is. Control of parasites can be realized without the complexity of transfer such as low salt water baths and medicine baths and the burden on fish. [Selection figure] None