Ott, Stephen L. - United States Department of Agriculture, National … - 1997
One objective of the NAHMS Dairy '96 Study was to assess dairy producer awareness of Johne's disease, estimate national …'s disease on dairy operations, and describe use of recommended preventive measures on U.S. dairy operations. Data were … collection from U.S. dairy operations with at least 30 milk cows in 20 states representing 79.4 percent of U.S. dairy cows via …