Silky chicken disease control

Cause: Chicken Newcastle disease is a highly contact, acute septic infection caused by a virus. The main features are dyspnea, diarrhea, neurological disorders, mucosal and serosal hemorrhage. Mainly through the respiratory and digestive tract infections, eggs can also be toxic. Diseased chicken secretions and excretions, blood, meat, internal organs, chicken feathers, and digestive tract contents are the major sources of infection. Symptoms: can be divided into the most acute, acute and subacute or chronic three types. The most acute type: diseased chickens often die suddenly without any symptoms. Acute type: The temperature of the diseased chicken rises to 31C, and the feed intake is reduced or not eaten at all. The spirit is not good, stray from the group, narrowing his eyes and closing his eyes. The chicken cocks and meat clams are purple or purple in color. Difficulty breathing. Extend your neck, shake your head, give a "click" or "gurgling", and sometimes sneeze. When pouring the chicken, a large amount of light white liquid flows from the mouth. The sac is full of liquid or gas. Lax, sometimes with blood, laying hens reduced or stopped. Diseased chickens generally die within 25 days or 63 days. Subacute or chronic type: mostly from acute transfer, the initial symptoms of chickens with acute type, manifested as obvious respiratory symptoms, longer course of the symptoms of neurological symptoms, lameness, or limb paralysis. Both wings drooped, circling, receding, and head tilted back to one side. About 24 days duration, a small number of diseased chickens can heal themselves. The incidence of adult chicken, in addition to the general symptoms of light, the main manifestation of a sharp decline in egg production, soft eggs increased significantly than usual, or have symptoms of diarrhea. Prevention: Immunization based on the results of antibody monitoring is the most effective means to prevent Newcastle disease in chickens. Conditioned chicken farms are best able to determine the optimal timing of flock immunization based on the results of monitoring of flock antibodies. In the event of an outbreak, chicken eggs may be injected with Newcastle disease-resistant egg yolk antibodies in a timely manner, or they may be vaccinated with 1 dose of 1 line vaccine. China Agricultural Network Editor