Acceptance and routine use by most commercial mixed feed firms of a linear programming model to generate rations on an individual product basis has created many operational coordination problems, especially among the procurement, manufacturing, and marketing departments. The typical model used represents such a gross oversimplification of the total feed manufacturing system that it can be extremely misleading when used by management to plan and control operations. The primary objective of this study was to construct and test a computerized operational control system for the typical commercial feed firm. This system, which utilizes an expanded linear programming model, simultaneously evaluates procurements, production, and sales constraints in generating decision guides to be used for optimizing operational planning and control by management.