Have a holstein bottle baby on milk replacer. I changed to the cheaper milk replacer (Purina all milk to Purina soy based) and all of a sudden he has the runs like crazy. Other calves are fine. Been giving electrolytes in between feedings. He has a good appetite and eats starter. He is losing weight and drawn in. Is this just a coincidence or did changing the milk replacer do this. Any help appreciated. Figures. Try to save $10 on a bag of milk replacer could end up really costing me.