Sputum is a bad habit, also known as different food. The clinical feature is that chickens feed each other and cause death or death. Cockroaches occur in chicks, middle and young flocks, and occur more frequently in chicks and middle-aged chicks, especially under intensive or caged conditions. Once it occurs, it can quickly spread to the whole group. The pheasant can frighten the chickens and cause nervous emotions. This can seriously affect the growth and development of young chickens, reduce the egg production of chickens, damage health, and reduce economic benefits. Therefore, strengthening management is the key to preventing the occurrence of deafness in chickens. Why do flocking occur in chickens? There are several main reasons for this: First, poor management: chickens do not pass through the severance; chickens are kept at a high density; the air is cloudy; the temperature is high or the ventilation in the house is poor; the ground moist chickens feel sultry and uncomfortable; Too strong, illegitimate illumination system, unsuitable light color; male and female hens are bred together with strong and weak chickens; inappropriate feeding time, insufficient feed and insufficient drinking water supplies; insufficient or improperly placed egg boxes; Suffering from traumatic bleeding, rectal prolapse, defecation, etc. is not timely isolation; the breeder does not pick up eggs in time. Second, nutritional imbalance in the diet: feed mix is ​​unreasonable, long-term lack of certain essential nutrients, high-energy feed, etc., cause abnormal taste, regulation of feed intake and dysfunction, resulting in the formation of cockroaches. Insufficient animal protein in diets, lack of green fodder and roughage, and lack of minerals, especially the lack of trace elements such as salt and sulfur, can not meet the body's needs for nutrients, causing metabolic disorders and spasms. The third is induced by certain diseases: such as chicken leech disease, E. coli disease, skin trauma, cloacal prolapse and other factors can induce the occurrence of sputum. Fourth, when broiler chickens and laying hens are adjusting chickens, the addition of new chickens will destroy the original group order and cause mutualism. Fifth, physiological factors: newborn chicks have a sense of curiosity about the outside world; when they are sexually mature, the secretion of sex hormones in the body increases, and the occurrence of abnormal behaviors of the pupae is promoted. In contrast to the above factors, the strengthening of feeding nutrition and management can minimize or avoid the occurrence of delirium. Specific measures include: To implement scientific management and maintain good and comfortable environmental conditions: (1) Deterrence: Deterrence is a good way to prevent and stop delirium from occurring. The egg was first broken at 7-9 days old. After the first break, the cockroach can be regenerated. Therefore, the rearing of the chicken is carried out until the 18th day of age, and when it is raised to 12 weeks, it is renewed. 2 to grasp the appropriate density: the general breeding farms plane feeding, each group can raise 250-300; professional households to 100-250 only as well. If the rearing density is too high, the chicken's activity space will be reduced. At the same time, there will be more carbon dioxide exhalation and defecation, and the air in the poultry house will be dirty. In addition to affecting health, it is also prone to paralysis. 3 to maintain the appropriate temperature, humidity and ventilation: ventilated indoors ventilation, keep the air fresh and avoid harmful gas accumulation. 4 Strict group management is practiced: groups are bred depending on the size of the age group or the individual's strength, and the male and female must be kept separately during the rearing stage. The proportion of male and female chickens is 1:5-6. The group is too large and the mother and mother are disordered, often triggering paralysis. 5Ensure that there are enough food troughs, sinks, nests: regular quantitative feeding. Provide plenty of clean drinking water. The breeder should collect the freshly produced eggs in time, and do not leave gaps in the quails. Always change the litter, clean it regularly and keep it clean. Keep the environment quiet and avoid loud noises. 6 to strengthen the guarding and patrol of chickens: When found quail, strong quail chickens should be raised or quarantined in isolation, the chickens that were bleeding from the wounds and recoiled should be immediately reared separately. Injury of local skin by rubbing iodine tincture or gentian violet, or sprinkle with anti-inflammatory powder or 20% sulfur ointment, etc., severe cases can take antibacterial anti-inflammatory drugs, and then into the flock after healing. Dietary stress should be balanced with full price and balance: In conjunction with diets, the supply of metabolic energy, crude protein, calcium, phosphorus, salt, and various amino acids should be strictly controlled, and special attention should be paid to crude protein, crude fiber, salt, Supply of methionine and inorganic sulfur. If the energy feed is insufficient, corn can be increased, but the content of corn in the feed should not exceed 60%. If there is not enough protein in the diet, fishmeal, bone meal, bean cake, etc. can be added. If the salt is lacking due to lack of salt, the salt in the feed can be added to 2% -3%, feed for 2-3 days, and supply enough water at the same time, the cockroach soon disappears. However, it is not possible to feed or overfeed salt for a long time to avoid poisoning.