Influence of albendazole on reproductive function of bulls

Twenty-six Hereford or Angus bulls of breeding age were used to determine whether the anthelmintic albendazole influenced weights of reproductive organs, spermatozoal production, spermatozoal output, quality of freshly ejaculated or frozen semen, serum testosterone values, or libido. Values for most of these measurements in 12 bulls treated with a single oral dose (22.5 mg of albendazole/kg of body weight) were not different from those for 14 nontreated controls, and the few differences that were observed appeared to be spurious and generally were not significant (P less than 0.05) when data were adjusted for pretreatment differences among treated and control bulls. The treatment did not alter reproductive function of the bulls.