How is the spread of Johnes disease controlled on a farm and how can a farm get rid of Johnes disease?
Johne’s disease typically enters a herd when an infected but healthy looking animal is purchased. Because the disease frequently takes time to develop and become recognized the infection spreads to other animals without the owner’s knowledge. Methods for control of Johne’s disease in animal herds or flocks depends on the management type. Currently, deer and elk farming could be considered cow-calf operations. In principle, two strategies must be employed at the same time: Prevent new infections – Newborn animals must be protected from infection by being born and raised in a non contaminated environment, and fed colostrum and milk that is free of M. paratuberculosis. Except for hand raised animals like orphans, this is easier said than done on an elk or deer farm. Adult animals carrying the M.
