Abstract
The use of synthetic pyrethroids in pour-on formulations reduced tick infestations and the incidence of tick-associated diseases in lambs more than dipping in organophosphate acaricides. Though the use of pyrethroids did not prevent the lambs from being infected with tick-borne fever (TBF), the incidence of lambs with lameness (tick pyaemia) or lambs suddenly found dead (Pasteurella haemolytica septicaemia), which often are seen in association with TBF, was reduced. The use of pyrethroids for three years did not seem to affect the prevalence of TBF.
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Hardeng, F., Baalsrud, K.J. & Øvernes, G. Controlling tick infestations and diseases in sheep by pour-on formulations of synthetic pyrethroids. A field study. Vet Res Commun 16, 429–436 (1992). https://doi.org/10.1007/BF01839020
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DOI: https://doi.org/10.1007/BF01839020