Between December 16 and 23, the Chicago Mercantile Exchange saw an increase in both cattle and pork futures, likely due to severe frosts delaying slaughter and causing concerns about livestock rearing. Tyson Foods suspended slaughter at some plants, leading to a decrease in cattle and pork numbers. Despite these concerns, the prices for live cattle and fattening cattle slightly increased, while pork prices saw a more significant rise. This increase in prices follows a pattern of fluctuation since November 11, with pork prices experiencing a notable surge between December 9 and 16.