ANTIPROTOZOAN ACTIVITY OF HERBAL EXTRACTS AGAINST Trichodina modesta LOM, 1970 (Ciliophora: Trichodinidae) IN GOLD FISH Carassius auratus

Trichodiniasis is a severe disease of aquaculture that kills a large number of fish. The discovery of new antiprotozoal drugs to treat Trichodina infections is gaining popularity. The purpose of the study was to see how efficient two medicinal plants were against Trichodina infection. The methanol extracts of Piper kadsura (Choisy) Ohwi and Zingiber officinale seemed to have antiprotozoal action against Trichodina modesta Lom, 1970, with 5 day LC50 values of 2.80 and 4.43 g/ kg, respectively. Concentrations of Piper kadsura (Choisy) Ohwi extracts of 2.5, 5.0, and 8.0 g/kg resulted in mortality of Trichodina modesta Lom, 1970 of 44.7, 88.3, and 100%. These results suggested that the methanol extracts of Piper kadsura (Choisy) Ohwi and Zingiber officinale have the potential to be employed to control Trichodina infection in an environmentally acceptable manner.