Word: duroc
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Dates: during 2000-2009
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...ruthless genetic specialization, driving the industry toward what ecologists call monocultures--vast numbers of a single variety. According to the American Livestock Breeds Conservancy (ALBC), 15 different breeds of pigs were raised for market in the 1930s; today, six of them are extinct. Only three varieties--Hampshire, Yorkshire and Duroc--account for 75% of U.S. production. In the 1920s, some 60 breeds of chickens thrived on American farms; today one hybrid, the Cornish Rock cross, supplies nearly every supermarket. A single turkey dominates: the Broad Breasted White, a fast-growing commercial creation with such a huge breast and short legs...