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Infectious encephalomyelitis of chickens

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, This disease is caused by avian encephalomyelitis virus, to attack the nervous system as the main feature of an infectious disease. Chicken, pheasant, quail can be infected. Diagnosis points: epidemic characteristics: chickens of all ages can be infected through the digestive tract. It can also be transmitted vertically through eggs laid by infected breeders. There is a shell on the disease, proof of embryonic stage has been infected. Clinical symptoms: Because the virus mainly attacks the nervous system, it is manifested as unstable walking, circular movement or in-situ rotation movement or paralysis of both limbs, head and neck shock

The disease is caused by avian encephalomyelitis virus and is characterized by invasion of the nervous system. Chickens, pheasants and quails can all be infected.

Main points of diagnosis:

Epidemic characteristics: chickens of all ages can be infected through the digestive tract. It can also be transmitted vertically through the eggs laid by infected breeder chickens. If the disease occurs as soon as it comes out of the shell, it is proved that it has been infected at the embryonic stage. Clinical symptoms: because the virus mainly invades the nervous system, it is characterized by unstable walking, circle movement or in-situ rotation movement or paralysis of both limbs, head and neck tremor. The symptoms of adult chickens were not obvious. Hens can see a decline in egg production.

Features of the lesions: the lesions were not obvious to the naked eye. The pathological changes of tissue cells can only be seen by microscopic examination.

Prevention and control measures: preventive measures: breeder chickens are vaccinated before giving birth. The antibody can be transmitted to the next generation through the chicken embryo, so that the chicks within one month after coming out of the shell will not be infected with the disease. Vaccination of chicks is not recommended because there will be adverse reactions. Treatment: there is no specific treatment at present.

 
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