Recently, a dairy farmer brought in five calves to my surgery that were coughing, two of which were in considerable respiratory distress. They belonged to a batch of 16 which were the last of his late calves.

He told me that the older calves were also coughing a good bit, though they were all eating meal and appeared healthy enough. Despite treatment, two of the calves died and I organised for a post-mortem examination to be carried out in the Regional Veterinary Laboratory in Kilkenny.