A Study of the Need for Cobalt in Dogs on Milk Diets

Abstract
In many cases iron and copper suffice with milk for normal hemoglobin building in dogs. The addition of small amounts of cobalt to iron and copper therapy stimulated hematopoiesis in certain dogs in which the rate of blood formation appeared unusually slow. About one-half of the dogs studied showed a cobalt deficiency as evidenced by hematopoietic responses to cobalt at a minimum level of 0.1 mg. per day.