It is better to weed out the old and weak mother-fowl chickens for one year to two years, and we must eliminate them after more than two years. Poor health and low egg production should be singled out in a timely manner. The layered chickens should be fed with high-calorie feeds, such as corn, bran, etc., to encourage the hens to increase their weight and to market the fertilizers in time. In addition, new and old layer hens should be kept separately, so that the new layers will gradually transition from prenatal feeding to egg production.
Moulting is controlled manually to artificially control feeding conditions to facilitate simultaneous moulting of layer chickens. In order to synchronize moulting, the light time can be reduced from the original 16 hours to 8 hours, the strong light to weak light, the compound feed to gluten, straw, and add 1% in the feed 1.5% of gypsum substitutes for minerals, and it can be changed from 7 days to 10 days. After moulting, add proper amounts of green fodder such as pumpkins and vegetables to restore the light to 12 hours to 16 hours. After 4 weeks to 5 weeks, the laying hens can grow new feathers. From 7 weeks to 8 weeks, the chickens can lay eggs. . Adding 2.5% zinc oxide to the diet also promotes moulting and shortens moulting time, leading to early egg production.
Adjusting the structure of the diet requires that the feed is rich in protein, minerals, and vitamins, good palatability, and good quality. When the egg production rate of laying hens is 70%~90%, the diet should contain 17%~19% of protein, with 2700 kilocalories~2750 calories per kilogram of feed and 3%~4% calcium. When every 100 chickens produce 5 to 10 eggs per day, they can start oxytocin. Every 100 kg of feed should be added with 15 kg to 20 kg of bean cake, 5 kg to 7 kg of fish meal and blood meal, and 5 kg to 10 kg of bran. 3 kg of loquat powder, 2 kg of bone meal, 4 kg to 5 kg of shell powder, 0.5 kg of salt, 10 kg of multivitamins for egg poultry, and mineral additives, and the rest for corn. When the egg production rate reaches 70% to 80%, dietary supplementation of 1kg to 2kg of fishmeal per 100kg of feed is required, and proper reduction of bran and corn will produce more eggs.
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