Efficacy of orally administered invermectin against larval stages of Oestrus ovis in sheep.
The efficacy of ivermectin administered orally at a dosage rate of 0.2 mg/kg liveweight against naturally acquired larval infestations of Oestrus ovis in sheep was 100% in a field trial. Ten sheep were free from infestation by first, second and third instar larvae of O. ovis 12 days post treatment, whereas 10 control sheep harboured 37.7 larvae on average, most of them first stage.
Lucientes
J
J
Dpto. Patología Animal, Parasitología y Enfermedades Parasitarias, Facultad de Veterinaria, Zaragoza, Spain. jlucien@posta.unizar.es
Castillo
J A
JA
Ferrer
L M
LM
Peribáñez
M A
MA
Ferrer-Dufol
M
M
Gracia-Salinas
M J
MJ
D000284:Administration, Oral; D000818:Animals; D004175:Diptera / Q000187:drug effects* / Q000254:growth & development; D005260:Female; D007306:Insecticides / Q000008:administration & dosage / Q000627:therapeutic use*; D007559:Ivermectin / Q000008:administration & dosage / Q000627:therapeutic use*; D007814:Larva / Q000187:drug effects; D009198:Myiasis / Q000188:drug therapy / Q000469:parasitology / Q000662:veterinary*; D009296:Nasal Cavity / Q000469:parasitology; D009668:Nose Diseases / Q000188:drug therapy / Q000469:parasitology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000188:drug therapy* / Q000469:parasitology; D013030:Spain
D007306:Insecticides; D007559:Ivermectin