Beef's economic indicators declined during September as key cattle prices slipped and feedyard losses reached the $100 per head level. Seven of the eight indicators measured in Drovers' analysis display down arrows, while just one indicator shows a sideways arrow. None of the indicators registered gains during the month. Fed cattle, feeder cattle and calves all saw price declines last month as did carcass prices and boxed beef prices. Cooler weather has helped improve feedyard gains but slightly higher grain prices means cost of gain is higher. Production costs are higher, but feedgrains remain at relatively low levels. Packer margins, while still comfortably in the black, declined $13 during September, earning a down arrow. Large beef supplies continue to burden the market, but consumer demand remains strong.