COPRO? (cobalt glucoheptonate) is a nutritional feed ingredient for ruminant animals that contains 2.5 % organic cobalt. The trace mineral cobalt is required by ruminant animals for numerous functions including, fiber digestion and vitamin B12 synthesis. In addition, when an animal has the proper balance of organic trace minerals it is better able to cope with the challenging effects of stress. Zinpro Performance Minerals? provide the highest biological efficacy of any trace mineral products on the market. For more than 45 years, Zinpro Performance Minerals have delivered positive animal performance responses and a strong return on investment in operations around the world.