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.
通过向鸟类,特别是家禽,如火鸡,施用具有结构##STR1##的
苯并咪唑治疗或预防鸟类黑头病的方法,其中R.sup.1为较低的烷基或苯基-较低的烷基,R.sup.2为较低的烷基,环烷基,环烷基烷基,环烯基,环烯基烷基,苯基,苄基和苯乙基,分散在无毒生理上可接受的载体中。