I. Eliminating old and weak hens
Laying hens are generally kept for 1-2 years and should be eliminated after more than 2 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 (2336, 10.00, 0.43%), 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.
Second, manual control of moult
Manually controlled feeding conditions are used to promote simultaneous moulting of laying hens. In order to synchronize the moulting of laying hens, the illumination time can be reduced from the original 16 hours to 8 hours, the strong light can be changed to low light, the compound feed can be changed to gluten and straw, and 1% can be added to the feed. 1.5% of gypsum substitutes for minerals so that moulting can take place in 7-10 days. After moulting, appropriate amount of green fodder such as pumpkin and vegetables is added to the diet, and the light is restored to 12-16 hours. After 4-5 weeks, the laying hens can grow new feathers, and the chickens can lay eggs at 7-8 weeks. Adding 2.5% zinc oxide to the diet also promotes moulting and shortens moulting time, leading to early egg production.
Third, adjust the diet structure
It is required that the feed contains a full range of protein, minerals and vitamins, good palatability, and good quality. When the laying hens' egg production rate is 70%-90%, the diet should contain 17%-19% protein, 2700-2750 calories per kilogram of feed, and 3%-4% calcium. When 5-10 eggs are produced per 100 chickens per day, oxytocin can be started. Each 100 kg feed should be filled with 15-20 kg of bean cake, 5-7 kg of fish meal and blood meal, 5-10 kg of bran, and sesame leaf meal. 3 kilograms, 2 kilograms of bone meal, 4-5 kilograms of shell powder, 0.5 kilograms of salt, 10 kilograms of multivitamins for egg poultry, and the appropriate amount of mineral additives, with the rest being corn. When the egg production rate reaches 70%-80%, 1-2 kilograms of fishmeal will be added for every 100 kilograms of feed in the diet. Proper reduction of bran and corn will increase the egg production.
Fourth, artificial supplement lighting
Light can stimulate ovulation and increase egg production. Layer chickens increase light every week for half an hour when they start laying eggs, and then increase for half an hour every two weeks until they reach 16 hours per day. It is best to add artificial lighting before dawn. When supplementing lighting, it is advisable to store 3-5 watts of ground per square meter. The light is about 2 meters from the ground, and there must be a lampshade to light, with a distance of 3 meters between the light and the light, and the light should be evenly illuminated.
Fifth, keep the environment quiet
When the chickens reach the peak of egg production, all conditions must be created to ensure the health of the flock and the high and stable yields, and the idea is to extend the peak period of egg production. Therefore, to keep the surrounding environment quiet, no fright, noisy. Keeping staff hands and feet when working, do not enter the sheds casually. Special precautions must be taken to prevent harassment of animals such as dogs and cats so as not to frighten the flock.
Sixth, strengthen health and epidemic prevention
In early autumn, there is much rain, high humidity, and the weather is hot and humid. This makes chickens susceptible to chicken gizzards, coccidiosis, and egg drop syndrome. Therefore, strengthening health and epidemic prevention is another important link to ensure the high and stable production of laying hens.
1. The chicken house and sports ground should be cleaned frequently, and foodstuffs such as troughs and sinks should be regularly disinfected to reduce the incidence of chicken disease.
2. In combination with Qiu Fang, the chickens were injected with Newcastle Disease II vaccine and cholera attenuated vaccine one each time, and the worms and aphids were driven out of the chickens. The body weight per kg of chicken was fed with 0.15-0.25 g of insect repellent and was cleaned after 7 days. Disinfect once.
3. Regular observation of the chicken's spirit, feeding, action, defecation, etc., found that the diseased chicken should be promptly isolated and treated to prevent spread.
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