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''A. marginale'' is usually the causative agent in cattle and wild ruminants, while ''A. ovis'' is most commonly isolated in sheep and goats.
''A. marginale'' is usually the causative agent in cattle and wild ruminants, while ''A. ovis'' is most commonly isolated in sheep and goats.
''A. central'' caused mild disease in cattle and is now the foundation for some vaccines.
''A. centrale'' caused mild disease in cattle and is now the foundation for some vaccines.
''A. mesaeterum'' is similar to ''A. ovis'' but has a lower pathogenicity.
''A. mesaeterum'' is similar to ''A. ovis'' but has a lower pathogenicity.