154 ToolsChecklists – Testing for Johne s Disease by National Milk Recording UKClick here for resource
Pathogen management \ Eradication
Species targeted: Dairy;
Where to find the original material:
Country: United Kingdom;
Due to the nature of Johne’s disease, accurate identification of infected animals is often difficult, especially in the early stages of the disease. Infected animals in the early stage of the disease are unlikely to shed the MAP organism or produce a detectable antibody response. In the later stages of Johne’s disease, cows will often intermittently shed MAP and exhibit peaks and troughs of antibody production until reaching the clinical stage of the disease. This tool for understanding Johnes testing schemes focuses on two major principles: identifying the map organism itself and looking for the animal’s antibody response to the disease.