FIELD TRIAL ON FLUMETHRIN (BAYTICOL(R) PO UR-ON) TREATMENT OF MANGE MITE (PSOROPTES-OVIS) INFESTED FEED-LOT BULLS

In this field trial the results of a Flumethrin (Bayticol(R) pour-on) treatment on Charolais feed lot bulls with a severe clinical Psoroptes ovis mange mite infestation is reported. The synthetic Pyrethroid Flu methrin was applied as pour on at 2.0 mg/kg b. w. (equals 20 ml of the ready to use solution per 100 kg body weight) along the dorsal line f rom neck to tail. The onset of the efficacy is shortly after treatment and was seen by increased activity of the heavily infested cattle tha t lasted for about 30 minutes. On day 11 after treatment 48 of the 49 cattle were free of mites, on day 23 after the second treatment all bu lls were free of mange mites. Under severe mange mite infestations, as reported in this case, a second treatment 10 to 14 days later is high ly recommended.