How to prevent and treat chicken white crown disease? A detailed explanation of comprehensive prevention and treatment methods

I. Clinical symptoms: Affected growing chickens show a slight decrease in feed intake, bloody mucus dripping from the beak, slow weight gain, and diarrhea; it occurs mostly between 60-100 days of age, with a mortality rate of about 0.2%. Laying hens mainly show decreased feed intake, pale combs, a gradual decline in egg production rate, thinner eggshells, and an increase in misshapen eggs.

II. Treatment: Continuous use of Bai Guan Ling or Bai Guan Jing for 5-7 days can achieve significant results. Growing chickens show a clear increase in feed intake, stop dying within 3-5 days, and gain weight. Laying hens generally begin to improve noticeably within 5-6 days, the comb gradually turns red, egg production slowly recovers, the eggshell color turns red, the texture becomes harder, the surface becomes smoother, misshapen eggs decrease, and the flock generally returns to normal within 10-15 days.

III. Prevention: To prevent and effectively control this disease, consider sealing the doors and windows of the poultry house with fine-mesh gauze to prevent mosquitoes and insects from flying in.