How can broiler breeder chickens make full use of feed during the laying period?

First, use egg trays or feed trays shaped like egg trays, with an uneven surface, so that the chickens cannot use their claws to rake large amounts of feed out of the tray; second, install feed retaining boards on the upper part of the side panels on both sides of the trough, and require the trough to have a certain depth, with the feed level relatively low (a trough depth of no less than 8 cm, and a feed level not exceeding one-half of the trough depth is preferable); third, ensure the feed is nutritionally complete; fourth, do not feed moldy or spoiled feed; fifth, the feed should not be ground too fine; sixth, promptly cull hens that have stopped laying or are low-producing; seventh, adopt a feed-saving incentive system.