Comparison of single and split-dose flubendazole treatment for the nematode parasite Trichostrongylus tenuis in experimentally infected grey partridges Perdix perdix.

Different therapeutic regimes using flubendazole for the treatment of Trichostrongylus tenuis infection in experimentally infected grey partridges Perdix perdix were examined. Flubendazole dosages of 4, 8 and 20 mg/kg were administered orally as a single dose or split into 3 or 9 parts given over 9 days. The efficacy against adult worms in the caeca improved with dose rate. Split doses were at least as effective as single doses, which removed up to 83% of adult T. tenuis. A dose of 20 mg/kg administered on a daily basis over 3 or 9 days gave the best clearance of T. tenuis, resulting in a reduction of at least 95% in worm burden.