Egg cockerels are generally fed for 3 months and are often reared on the ground. The phenomenon of deafness and dewlap is serious and often causes certain economic losses. The following methods can be used for prevention and control. First, the offspring were carried out around the age of 9 days, and vitamin K3, multidimensional electrolysis, and antibiotics were added two days before the onset of the offending. Second, adjust the feed formula to reduce the amount of plant protein feed, increase the proportion of fish meal, meat and bone meal and other animal protein feed, increase the proportion of high fiber feed such as bran, add vitamins and minerals. Third, to strengthen feeding and management to prevent the chicken's density is too large, no more than 13 chickens per square meter; reduce light intensity; timely supply of adequate drinking water; strengthen ventilation; supply nutrient full price feed. 4. Prevention of Parasitic Diseases and Infectious Diseases When chickens are attacked by cockroaches and cockroaches, the chickens are disturbed and often self-individually or encounter each other. Egg cockerel disease, coccidiosis, Newcastle disease, etc., can cause lack of nutrients, cloacal exposure, induced defecation, licking and other anal. V. Clearing sharp objects in the home The sharp objects in the house are likely to cause trauma to the chicken body, causing the wounded chickens to be defecate. Therefore, care must be taken to repair the cages and remove the sharp objects. Sixth, suffering from pheasant treatment 1 with 1% saline even drink for 3 days. 2 with Zhi Ling or scrofula anal feeding 5 to 7 days. 3 caused by stress factors, available chlorpromazine, stability and other mix or drinking water for 5 days. China Agricultural Network Editor