Water-legged chicken is ascites, mainly caused by Escherichia coli. As soon as the abdominal cavity is opened, it is water, yellow and red blood. Poor ventilation! !

Infectious bronchitis mainly occurs in chicks from February to March, which is induced by factors such as excessive temperature fluctuation or infectivity. The disease does not spread vertically, but it is prone to continuous brooding. The disease is resistant to chickens, does not lay eggs, has a good appearance and a normal appetite, but the comb is extremely red and the abdomen is drooping, commonly known as "water-legged chicken". Autopsy only found tubal cyst and normal ovary. The prevention and control of the disease need to strengthen the feeding management during the brooding period, especially to control the temperature (the temperature difference should not exceed 2℃ within 24 hours, and the temperature should be high and not low), strictly and regularly disinfect, do a good job in immune prevention, and eliminate and destroy sick chickens in time when they are found.