Cows don't, but farmers do. And the time change means changing the milking schedule. And that reduces milk output. But the argument is still shaky because what's basically been shown is that milk output is reduced for a period following the change in time until the cows get used to it, the it returns to normal. So extending it shouldn't have any more or less effect than there is currently because there are still only 2 time changes a year.
Personally, I'm all for this. I honestly wish they'd make the shift permanent. I much prefer having sun in the late afternoon/evening than in the morning when I'm either at work or asleep.
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'He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me.'
-TJ
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