Diarrhea: an early sign of Johne's disease in cattle
Diarrhea in adult cattle can be caused by Johne’s disease. There are relatively few other causes of diarrhea in adult dairy cattle: salmonellosis, BVD (bovine viral diarrhea), winter dysentery (corona virus) and a "hot ration" (excess carbohydrate in the feed) are the more common ones. It is important to use laboratory tests to determine which of these diseases might be affecting a cow with diarrhea. The way each of these disease is managed is different.