Paratuberculosis in two herds of exotic sheep.
D000818:Animals; D000836:Animals, Zoo; D010283:Paratuberculosis / Q000453:epidemiology* / Q000473:pathology / Q000517:prevention & control; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000473:pathology / Q000517:prevention & control