title: Ostertagiasis in young lambs in spring.
mesh_terms: D000818:Animals; D007814:Larva; D010028:Ostertagia / Q000502:physiology; D010029:Ostertagiasis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000469:parasitology; D014252:Trichostrongyloidiasis / Q000662:veterinary*