(1) Dietary broilers grow fast and have a short feeding period. Diets must contain high energy and protein, and the requirements for trace components such as vitamins and minerals are also very strict. Energy, protein deficiency Chickens grow slowly, feed efficiency is low, vitamins and trace elements can also cause a variety of metabolic diseases. Different from rearing broiler chickens and cultivating breeder chickens, it is not only limited to feed but also to promote more feeding and more weight gain, and improve feed utilization. The broiler chickens adopt free-feeding methods and continuously drink water. Two types of diets are used in most cases in our country. Previous diet: 0-4 weeks of feeding the previous diet, the previous diet contains more protein and antibiotics. The metabolic energy of the previous diet was 2.9-3.2 Mcal/kg, and the protein was 21-23%. Late diet: 5 weeks start with the late diet to replace the previous diet, this diet contains lower protein and higher energy. The metabolic energy of the late-phase diet is 3.0-3.2 Mcal/kg, and the protein is 19-20%. The form of diet: There are mainly powder and granules. After powder, the palatability is good and the food intake is large. The chicken can not be picky, can eat all the net, prevent waste, and is suitable for feeding broilers. The particle size is generally about 0.3 cm. The starter diet is to re-crushed the pellets to make the pellets finer. Sand grain feeding: After 1 week, sand grains were fed (about 1% of the diet) to enhance the digestion of the chicks. (2) Digestion and absorption of drinking chickens, waste excretion, blood circulation, body temperature regulation and other physiological activities are inseparable from water. If there is insufficient drinking water, the feed is poorly digested and absorbed, growth and development are poor, and the chicks are cut off for too long. Once they see the water, they will drink too much, drink too much, and those who are light will diarrhea and die seriously. Drinking water should be clean and uninterrupted. The amount of drinking water in broiler chickens is also affected by factors such as temperature, dietary properties, and feeding methods. The weight gain of broiler chickens is highly related to feed remuneration and drinking water. Therefore, special attention should be paid to the supply of drinking water in the management of broiler chickens.
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