title: The efficiency of cypermethrin (NRDC 149) for the treatment and eradication of the sheep louse Damalinia ovis.
abstract: A synthetic pyrethroid, cypermethrin (NRDC 149), showed activity in killing lice (Damalinia ovis) in the fleece of sheep at concentrations as low as 1 ppm in a dip. In addition concentrations of 5 and 10 ppm showed a persistent effect and prevented reinfestation from contact challenge sheep for 7 and 19 weeks respectively.
mesh_terms: D000818:Animals; D005260:Female; D010373:Lice Infestations / Q000188:drug therapy / Q000662:veterinary*; D011722:Pyrethrins / Q000627:therapeutic use*; D012756:Sheep; D012757:Sheep Diseases / Q000188:drug therapy*
chemical_list: D011722:Pyrethrins; C017160:cypermethrin