PURPOSE: A composition containing 1-&lsqb；4-(4-nitro-phenoxy)-phenyl&rsqb；-propane-1-one(1434NJ0221) is provided to prevent and treat diseases caused by coccidium. CONSTITUTION: A pharmaceutical composition for preventing and treating diseases caused by Eimeria tenella and coccidium contains 0.1-50 wt% of 1-&lsqb；4-(4-nitro-phenoxy)-phenyl&rsqb；-propane-1-one as an active ingredient. A veterinary composition for preventing and treating diseases caused by Eimeria tenella and coccidium contains 1-&lsqb；4-(4-nitro-phenoxy)-phenyl&rsqb；-propane-1-one of structural formula A as an active ingredient. An animal infected by Eimeria tenella and coccidium is mammals, fishes, or poultry.본 발명은 콕시디움 억제 활성을 갖는 1-[4-(4-니트로-펜옥시)-페닐]-프로판-1-온(1434NJ0221)을 유효성분으로 함유하는 조성물에 관한 것으로, 상세하게는 본 발명의 1-[4-(4-니트로-펜옥시)-페닐]-프로판-1-온(1434NJ0221)은 콕시디움, 즉 톡소포자충의 증식에 뛰어난 억제 효과를 나타내므로 톡소포자충 및 콕시디움에 기인한 질환의 예방 및 치료에 유용하게 이용될 수 있다.
