Beef packer margins deteriorated to -$261/head last week, down $19 from the prior week as weaker beef values (especially the Choice cutout) were offset by firmer fed cattle prices, which further compressed packer profits. The cutout slipped to $387/cwt while fed cattle prices held above $259/cwt, extending the pressure on margins despite seasonal summer beef demand. Historically high cattle costs continue to outweigh gains in wholesale beef values. Feedlot placement margins weakened to ...