Do 29-day duck eggs need to be artificially broken?

29-day-old duck eggs need to be broken up manually. Duck eggs hatch for about 28 days. If the duckling has not broken its shell within 29 days, it must be helped to break its shell manually to avoid the duck from choking. When choosing hatched duck eggs, we must choose refined duck eggs to make them heated evenly, so as to ensure that the ducklings can develop completely in the eggshell.