title: Lean ewes and twin lamb disease common.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006734:Horse Diseases / Q000453:epidemiology* / Q000473:pathology; D006736:Horses; D011247:Pregnancy; D012606:Scotland; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000209:etiology