Symbolically, this contract was broken in the mid-20th century when academic departments of animal husbandry changed their names to departments of animal science. As the textbooks put it, animal science became ''the application of industrial methods to the production of animals.'' This change occurred in America for a variety of reasons. With projections of burgeoning population and shrinking amounts of agricultural land, agricultural scientists feared shortages in the food supply. The Depression and Dust Bowl had driven many people out of agriculture, as had World War II, which exposed young men to faster, more exciting lives than rural America afforded. As the lyrics of a song popular during World
War I went, ''How you gonna keep 'em down on the farm, now that they've seen Paree?''
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