SMITHFIELD, Va. -- Smithfield Foods Inc., the largest global hog producer and pork processor, said Monday it agreed to buy most assets of the branded meats business of ConAgra Foods Inc. for about $575 million in cash and stock. Brands being acquired include Armour, Butterball, Eckrich, Margherita, Longmont and LunchMakers, which are marketed to grocers, delis and restaurants. The brands have combined sales of $1.8 billion. (AP)