Attempted Control of Paratuberculosis in Dairy Calves by Only Changing the Quality of Milk Fed to Calves

One of the important routes Mycobacterium avium subsp. paratuberculosis (MAP) transmission in dairy calves is milk. The aim present study was to assess efficacy milk treatments prevent MAP infection calves. A one-year longitudinal carried out. Newborn were assigned one four experimental groups: 5 received naturally MAP-contaminated milk, copper treated 4 fed calf replacer, and 3 UHT pasteurized load estimated. Infection progression monitored monthly. After year, euthanized, tissue samples cultured visually examined. undetectable replacer Copper ion treatment significantly reduced number viable contaminated Fecal shedding observed all groups but began earlier Paratuberculosis control programs must place multiple hurdles between source, MAP-infected adult cows, most susceptible animals on farm, young As our shows, strict dependence a single intervention block transmission, no matter how important, fails this insidious farms.