title: Ovine ostertagiasis.
mesh_terms: D000818:Animals; D001315:Australia; D008027:Light; D008297:Male; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology; D014252:Trichostrongyloidiasis / Q000453:epidemiology / Q000662:veterinary*