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Three-phase feeding method for broilers
The growth period of broilers is divided into three stages, each stage adopts different feeding methods and can receive good feeding effects. Physiological characteristics of young chickens: Newly hatched chicks have short and thin fluff. Their body temperature is about 3°C ​​lower than that of adult chickens. Their body temperature gradually increases after 4 days of age, and they reach the temperature of adult chickens at 10 days of age. Generally, the body temperature is 4-5 weeks. Over the first set of feathers; chickens with small gastrointestinal volume, poor digestion of food, but rapid growth and development. According to the physiological characteristics of broilers and their growth rules, the feeding period can be divided into three stages. The first phase is 0-14 days old, the second phase is 15-35 days old, and the third phase is 36 days old to slaughter. As soon as the first stage chicks have emerged, the transfer from the hatchery to the brooding house should allow the chicks to adapt to the new environment as quickly as possible, reduce stress, reduce the incidence rate, and increase the growth rate. In the first few days, high-quality drinking water was given, and 5% glucose and multivitamins were added to the drinking water for high-efficiency and low-toxicity antibacterial drugs. Feed nutrient-rich, easily-digestible, full-priced compound feeds with less feed and feed, feeding the best 1/2 or 1/3 of the serving tank. The first day was given 24 hours of light, the light intensity was 4 watts/square meter, and then gradually reduced to natural light. The second stage chicks have basically adapted to the new living environment and gradually entered the stage of rapid growth. The main task of this stage is to cultivate healthy chickens, form chicken shelves, promote the development of internal organs and thick and robust legs, and prepare for the next stage of feeding. According to the growing condition of the chicken, the feed volume can be appropriately increased to reduce the protein and energy content of the feed (generally by 10%). It is worth noting that the content of various vitamins, trace elements and minerals in the feed cannot be reduced. Regular feeding 3 times a day, the chicks can eat more feed each time. This will not only digest the digestive organs, but also fully digest and absorb nutrients. Pay attention to exercise. At night, use bamboo rafts to gently drive the flock, increase the amount of activity of the chicks, promote the development of internal organs, and reduce pressure stimuli on the chest. Appropriately increase the light intensity. In the third stage, measures should be taken to promote chicken intake, digestion and absorption, reduce exercise and reduce consumption, and increase growth rate. To provide high-quality fattening feed to fully meet the nutritional needs of chickens and improve feed conversion. Prepare feeds, pay attention to diversified raw materials, use low-fiber raw materials, add animal and vegetable fats, and make pellets as much as possible. The number of feedings is increased from 3 to 5 times a day, or the free-feeding method is used to keep the feeds continuously. Without affecting the health of the flock, reduce the exercise, increase fat deposition, and reduce the light intensity to extend the lighting time. Adjust the density in time, generally 12-15 per square meter in winter and 8-10 per square meter in summer. Pay attention to ventilation, keep the air in the house fresh, temperature about 18 °C, relative humidity 55% is more appropriate. China Agricultural Network Editor