Umbarger Cattle Feed Cobboom, 50 lb. Bag, Pallet 40 BagsUnique corn cob based top dress designed to add fill and capacity to lower third and flank. Delivers multiple sources of fiber to increase fill and capacity throughout the lower third. Low energy product that naturally maintains a healthier digestive system. The best results are achieved when fed for longer than two weeks. Crude Protein: 6% Crude Fat: 1% Crude Fiber: 23%