Comprehensive Control of White Crown Disease in Chicken

First, clinical symptoms: the feed intake of sick adult chickens decreased slightly, mouth flow with blood and mucus, slow weight gain, dilute feces, mostly between 60-100 days old, and the mortality rate was about 0.2%. The main manifestations of laying hens were decreased feed intake, pale crown, decreasing laying rate, thinner eggshell and more abnormal eggs.

Second, treatment: continuous use of Baiguanling or Baiguanjing for 5-7 days can achieve significant results. The feed intake of adult chickens increased significantly, stopped dying from 3 to 5 days, and gained weight. In general, the laying hens began to improve obviously from 5 to 6 days, the crown gradually turned red, the egg production slowly recovered, the eggshell color became red, the texture became hard, the surface became smooth, and the abnormal eggs decreased, and the flock generally returned to normal on 10-15 days.

Third, prevention: in order to prevent and control the disease, the doors and windows of poultry houses can be closed with fine mesh to prevent mosquitoes from flying in.