I am planning on batch pasteurisation of colostrum at 60°C; does this kill Johne’s Disease pathogens without affecting the immunoglobulins or antibodies in the colostrum?
The response we have from the National Action Group on Johne’s is:
Yes . That is correct 60oC and 60 minutes is the correct temperature. Indeed in some studies the overall absorption is improved, despite some immunoglobulins being lost. But pasteurisation is only part of the control process and care must be made to avoid over-relying on pasteurisation and not tackling other areas of greater importance such as García-oral transmission in calving pens. Also very important that there is no cross-contamination post pasteurisation with infectious manure.