Manna PRO Corporation 707 Spirit 40 Park Dr, Chesterfield, MO63005 Manna PRO Corporation is a national animal nutrients and food producer. This is its corporate headquarters. It offers…More many products, but its flagship product is Calf-Manna, which delivers a wide range of benefits to all types of animals at all life stages, including horses, cattle, rabbits, goats, poultry, swine and deer. Manna PRO has more than five production mills, and it has sales offices nationwide. Manna PRO is the successor of the Carnation Company Milling Division.