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Scott Beyer and his farmhands spend mornings scraping manure off the milking-parlor floor. In the nearby climate-controlled barn, cows are sleeping on water beds and munching on nutritionist-crafted meals while high-tech tags on their legs help monitor their health.
“We try to make them live the high life,” said Mr. Beyer, manager of Kelsay Farms outside Greenwood among the corn and soybean fields of central Indiana.
Many of…