Until chickens take up golf and get a hankering for evening barbecues, they couldn't care less about daylight saving. Daylight saving is a political construct to provide millions in additional business for the above mentioned industries. Humans have to synchronize their time pieces in order to keep appointments. It only affects you chickens if you run your daily care of them off the clock instead of the sun.
Chickens wake up at first light and go to roost at last light, no matter what our clocks say. Their inner clocks determine when they lay their eggs.