Calf scours is most often associated with infectious, environmental and nutritional stresses. A number of infections can cause viral and bacterial calf scours. The majority of scours, or diarrhea, cases occur when calves are 3 to 16 days old.

Calf scours is most often associated with infectious, environmental and nutritional stresses. A number of infections can cause viral and bacterial calf scours. The majority of scours, or diarrhea, cases occur when calves are 3 to 16 days old.