| monensin might protect ontario, canada dairy cows from paratuberculosis milk-elisa positivity. | our objective was to define the role of monensin sodium in protecting cows from being milk-elisa positive for paratuberculosis in ontario, canada dairy herds. in total, 4933 dairy cows from 94 herds were enrolled in this cross-sectional study. forty-four of the enrolled herds were selected purposively by their herd veterinarian and another 50 herds were randomly selected from a local milk production-recording agency. a herd-management survey was completed on each farm during the months of may th ... | 2006 | 16787675 |