我是 LongbridgeAI，我可以總結文章信息。美國的牛肉價格創下每磅 6.90 美元的歷史新高，牛排平均價格為 13.02 美元，這主要受到 75 年來最低的牛羣數量、高昂的飼料成本、墨西哥進口禁令和勞動力短缺的推動。儘管好市多的嫩 loin 價格上漲了 37.5%，但其他部位如紐約 strip 的價格卻出現了下降
Historic beef prices: Ground beef hit $6.90 per pound, the highest on record, while steaks average $13.02 per pound, both sharply up since 2020. Costco price patterns: Tenderloin at Costco rose 37.5%, but many cuts held steady or fell, such as whole New York strip down $3. Supply crunch factors: A 75-year-low cattle herd, high feed costs, import bans from Mexico, and labor shortages are tightening U.S. beef supply.