Meat packer margins worsened last week for both the beef and pork sector as higher animal costs exceeded any gains in meat values. Beef packer margins fell $43/head last week and scored a new 15-year low according to WPI’s models as fed cattle prices surged and outpaced a $5 gain in the choice cutout. Pork packer margins dipped$2/head as hog purchase costs exceeded a mild $1.10/cwt gain in the pork cutout. Pork margins are still positive and are unlikely to disrupt the industry’s supply and purchase plans, but the weakness in beef packer margins suggests the industry will be aggressive slowing chain speeds and reducing kills to control profits.  The gains in fed cattle and market hog prices helped...