Infectious Laryngotracheitis (ILT)
Infectious Laryngotracheitis, is a disease of the upper respiratory system that
frequently results in severe breathing difficulties. The disease has a somewhat slow movement
from bird-to-bird. Most birds either
die or recover within two weeks of contracting the disease. Outbreaks continue on a somewhat sporadic
Common though somewhat sporadic, worldwide
14 weeks and older are most
Herpes Virus (highly contagious)
infected birds (carriers for up to 24 months)
objects; people and objects in contact with infected birds
Eyes (First observable symptom)
from suffocation due to blockage of trachea
exhalation, head will rest on breast
of head and neck to help with breathing
of head to dislodge plugs in windpipe
& gurgling during inhalation
in egg production
mucus expelled from trachea
sound like a crow on exhale
None. Extreme caution with
biosecurity is recommended. Antibiotics
may be helpful in treatment of secondary bacterial infections. See "Vaccine" for possible use
during an outbreak.
Yes (click here for more information)
in areas where ILT is endemic.
controversial, since it can result in latent carriers, and can expose
non-vaccinated flocks to the disease.
be used during an outbreak to limit the extent and duration.
- Vaccine prevents symptoms, but not
care in hygiene to prevent movement of the virus between flocks
Also Known As:
examination of the trachea during a necropsy.
Swollen windpipe is often clogged with a bloody or "cheesy"
detection of the virus and/or antibodies.
Diseases with similar symptoms:
Duration of symptoms:
Usually 10-14 days, however the disease can cycle through the flock for
up to 6 weeks.
6 to 12 days from onset to observation of symptoms
Varies from Low (<10%) occurrence in mild cases, up to 100% in acute
Varies; 5-70% with an average of
Transmission to people:
No known cases.