FOR MANY YEARS , herds infected with paratuberculosis (Johne's disease ) were tested with intradermic johnin US Department of Agricultureapproved disinfectant .16.If Department If Department necessary to purchase replacement cattle , obtain mature individuals from herds with no history of paratuberculosis .17. Sale of known infected cattle for dairy or breeding purposes may subject the owner to civil liability .
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A. I. Moyle (1975) studied this question.
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