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The US Pork Industry from 1950-Present美国养猪产业历史1950-至今1950-1960sSmaller scale operations (10-50 sows)小规模运营(10-50头母猪)Fa rrow to finish从出生到育肥"Same site" production"单场式"生产模式Often times "Same barn production"通常是"单舍式生产模式"Diversified with other aspects of farm operations与农场运营的其他方面一起形成多元化经营Utilized self-grown crops as livestock feed以"野生"(非人工种植)农作物作为牲畜饲料1950-1960S Dual purpose hogs"双重目的"猪只Hogs were bred and raised for the production of fat/lard in addition to pork