two of the comforts enjoyed by Kirk Christie's dairy cows
on his farm in Iowa. The idea behind the frills is that cows will make more milk if they feel more comfortable—"Christie estimates his cows' milk production has increased 10 percent since he installed the waterbeds." Watching TV helps the cows get used to different kinds of voices, which prevents them from getting as nervous when they have to hear the different voice of people who visit the barn. Christie isn't the only farmer using this method to increase his milk production—the idea to use waterbeds on dairy farms originated in Europe more than a decade ago.
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