Cows produce more milk when listening to music, but only if the music has a soothing tempo, research has shown. When mellow music, such as classical or folk, is played for dairy cows, they each produce about 1.5 pints (about 0.7 liters) more milk than they normally do, according to one study. This is an increase of about 3%, which researchers attribute to the cows being less stressed. Researchers believe that cows’ brains might react to music in the same way as humans’ brains, and that music with slower beats might cause the brain to release calming chemicals that reduce feelings of stress.
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