A method is provided for treating or preventing blackhead disease in birds by administering to birds, especially to poultry, such as turkeys, benzimidazoles having the structure ##STR1## wherein R.sup.1 is lower alkyl or phenyl-lower alkyl, and R.sup.2 is lower alkyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl, cycloalkenylalkyl, phenyl, benzyl and phenylethyl dispersed in a non-toxic physiologically acceptable carrier.
本方法提供了一种治疗或预防鸟类黑头病的方法,通过给予鸟类,特别是家禽,如火鸡,
苯并咪唑化合物,其具有结构##STR1##其中R.sup.1是低烷基或苯基-低烷基,R.sup.2是低烷基,环烷基,环烷基烷基,环烯基,环烯基烷基,苯基,苄基和苯乙基,分散在无毒生理可接受的载体中。