Information

A National Health Monitoring system study found that infected dairy herds experience an average loss of $40 per cow in herds with a low Johne’s diseases clinical cull rate while herds with a high Johne’s disease clinical cull rate lost on average $277 per cow.  This loss was due to reduced milk production, early culling, and poor body condition at culling.

FAQS

68% of dairies are infected with Mycobacterium avium subspecies paratuberculosis (MAP), the organisim that causes Johne’s disease.  (National Animal Monitoring System Dairy, 2007 study)

8% of beef herds are infected with Johne’s.   Beef cows infected with Johne’s disease produce less milk resulting in lighter calves at weaning and infected cows can be slower to breed back.

Johne’s Links and Testing Resources

Johne’s Informational Center
Cost of Johne’s to Dairy Producers
Testing Instructions