Farmers don't care about the clock, neither do the cows. Work traditionally started when the sun came up, and cows got fed then too... since cows still can't read the clock, they still get up and want food at sunrise, DST or not.
Haha! I worked on a dairy farm in my youth. Cows also don't care about what days off your government says you should have. Kids have a recital in the afternoon? Better have someone there to milk the cows. Woke up with a tooth ache? better have someone there to milk the cows.