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Because they'd have nothing else to eat. Cows have to eat all the time, no matter what season they're in. Hay is better for their digestive systems than grain is, since hay is simply dried legumes and grass that has been cut and harvested by man. Hay is only fed when cows cannot graze on pasture, especially in the winter and early spring when the grass is too short to be eaten.

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15y ago

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