The Carthage System ~ Generations of Excellence. Building for the future by working with the past. Professional Swine Management, LLC provides comprehensive management to family owned breed to wean and wean to finish pork facilities that make up the Carthage System. The Carthage System and Professional Swine Management (PSM) have one main focus: managing all phases of pork production including breeding, gestation, farrowing, nursery, and finishing. We help family farmers remain an important part of our nation’s food supply chain. Professional Swine Management, LLC (PSM) works with farm families in the Carthage System to help optimize all phases of pork production. This allows family farmers to remain on the farm, increases productivity and overall profit. When that happens, our small farming communities remain viable, our nations’ food supply is safer, and the American diet healthier.