我是 LongbridgeAI，我可以总结文章信息。美国的牛肉价格创下每磅 6.90 美元的历史新高，牛排平均价格为 13.02 美元，这主要受到 75 年来最低的牛群数量、高昂的饲料成本、墨西哥进口禁令和劳动力短缺的推动。尽管好市多的嫩 loin 价格上涨了 37.5%，但其他部位如纽约 strip 的价格却出现了下降
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.