In Johne's disease, corrugation is not the feature in

In Johne's disease, corrugation is not the feature in Sheep and Horses.
Johne's disease is an infectious wasting condition of cattle and other ruminants caused by Mycobacterium avium subspecies paratuberculosis, commonly known as Map. It is closely related to the organism that causes tuberculosis.
Johne's disease (paratuberculosis) is a chronic debilitating disease that affects the intestines of all ruminants, including cattle, sheep and goats. It is characterized by progressive emaciation, chronic diarrhea, and a thickened and corrugated wall of the intestines.