Beef packer margins fell over $100/head for the second straight week to hit - $151/head, which is among the worst margins in the past decade. The culprit for weaker margins was an $11/cwt pullback in the Choice cutout and other beef values while fed cattle prices were steady/slightly higher. Packers tried to delay purchases last week, but ended up having to pay for spot cattle to fill beef orders. As margins weaken again, the threat of suspended weekend kills and reduced slaughter rates increases as a threat to fed cattle values. Feedlot profit margins for last week’s placements turned $134/head higher ...