Expert in layer growing feed, with a crude protein content of ≥15.5%. The product is nutritionally comprehensive, extruded and granulated for uniform nutrition, and the cooked feed has high digestion, absorption, and utilization rates. Extensive testing has proven that young chickens fed with Haoduo Bang 522 have a symmetrical body shape, plump and glossy feathers, exceed body weight standards, exceed tibia length standards, high uniformity, low culling rate, low feed intake, and strong disease resistance. They can reach the laying weight 2-3 weeks earlier, significantly reducing the cost of layer growing; with sufficient nutritional reserves, they reach peak production quickly and maintain a long peak period. For use from 57 to 126 days of age, each bird consumes 4.3kg of feed, has a tibia length of 105mm, and weighs over 1.6kg.