 A good amount of cattle were purchased for deferred delivery last week, and hog futures tried to rally but could not continue the strength through the day, resulting in triple-digit losses and numerous contracts. Cash cattle were not expected to trade yesterday, and the holiday-shortened week will keep traders guessing about cash prices. The packers could commit 28 percent on last week's purchases for deferred delivery. That may limit their aggressiveness this week, keeping traders cautious even though cattle supplies remain tight.