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yahoo.com > news > science > articles > americas-chicken-got-4-times-223700269.html

America's chicken got 4 times bigger since 1957, and researchers say it wasn't hormones

1+ week, 17+ hour ago   (557+ words) America's supermarket chicken has been remade over the past several decades into something far removed from the bird many families bought in earlier generations. Research shows today's broilers reached more than four times the weight of a 1957 chicken by the…...