“This is a progressive program, and producers can determine their level of involvement. The more producers know about and test for Johne’s disease, the better for them and their customers.”

Carter says the incidence of Johne’s disease in dairy and beef herds can be reduced significantly when producers know about Johne’s disease and implement measures—including testing—to reduce the transmission of MAP. He says Johne’s disease is estimated to be present in 68 percent of U.S. dairy operations and eight out of 100 U.S. beef herds.

A National Animal Health Monitoring Systems study found that infected dairy herds experience an average loss of $40 per cow in herds with a low Johne’s disease clinical cull rate while herds with a high Johne’s disease clinical cull rate lost on average of $227 per cow. Beef cows clinically infected with Johne’s disease produce less milk resulting in lighter calves at weaning, and infected cows can be slower to breed back.