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HISTORY
JOHNE'S INFORMATION CENTER - University of Wisconsin Ñ School of Veterinary Medicine
University of Wisconsin - School of Veterinary MedicineUniversity of Wisconsin - School of Veterinary Medicine
PREVENTION
At a Glance


  Prevention pays!

Prevention is the most cost-effective way to manage Johne's disease. It is far less expensive to block introducing Johne's disease into a bison herd than it is to control or eradicate the infection once it creeps in and invisibly starts to spread.




Prevention pays!! The most cost-effective way of managing Johne's disease is never to acquire the infection in the first place. Know the Johne's disease status of herds from which you may purchase an animal. Keep calves away from potentially infected adults and contaminated adult manure.

Table Bottom

Risk management is the foundation of any good animal care program; the risk of becoming infected by bringing in infected bison is manageable. Smart buyers will apply the concepts of risk management and require diagnostic test results for the source herds to limit their risk as much as possible. Owners must recognize the risk of buying MAP-infected animals if they do not purchase from test-negative herds. You are better off buying a test-negative animal from a herd with a known low test prevalence than buying an animal from a herd that has no clue about its Johne's disease history.

In addition to buying it in, other routes of introducing MAP infection exist, but they are of much lower risk (although data is limited quantifying these risks). These other routes include spreading contaminated manure on land used for grazing or forage production, use of colostrum or milk from goat or bovine dairy herds of unknown status for hand-rearing orphaned neonates, or animal access to water from heavily contaminated adjacent farms. These routes are theoretically important, but the risk of acquiring the infection from them is likely much lower than through the purchase of animals.

For the bison industry, self-regulation to encourage open discussion of Johne’s disease and marketing of animals from test-negative herds is the best way to manage it.


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