In early disease events, sudden hair loss that lasts for 1-3 days. Chicken snoring, coughing and breathing with difficulty so that intermittent neck extended. Based on my experience of this disease is usually protracted. Sometimes a small chicken can also be infected if not in the vaccine and there is a new layer was sick vaccinated because vaccination post close distance.The disease is running very fast, 6-10 day incubation period. 5-70% mortality rate, usually ranges between 10-20% with morbidity rates can reach 100%. ILT attacked chickens may die or recover after 2 weeks. In layer production may be down to 10-20%, the production will return to normal after 4 weeks.
ILT is caused by a virus. Virus is easily killed by disinfectants and direct sunlight. The virus will die at a temperature of 55 degrees Celsius for 10-15 minutes and the temperature 38 degrees Celsius for 48 hours. At 0 degrees Celsius temperature survive and remain infective outside the host. If a virus hidden in the mucus or chicken carcass remains dangerous for a long time. chickens that had recovered from the attack would be immune to ILT within 1 year, while the vaccination will lead to immunity in the 2-12 month period.
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