LARYNGOTRACHEITIS
The primary target of LTV (much like Infectious Bronchitis) is the trachea, with the primary symptoms being moist tracheal rales, nasal discharge, and most notably (in severe cases), a bloody discharge from the nose and/or mouth. This element is significant since the presence of blood from mucous discharges and coughing/sneezing, can be a defining symptom when attempting to diagnose LTV in a flock that exhibits upper respiratory symptoms. In other words, when diagnosing specific upper respiratory infections, which are sometimes difficult to differentiate, LTV should be ruled out first when blood is present. Other similar differentiating symptoms include face swelling and/or odor to Infectious Coryza, and a rapid rate of spread with Infectious Bronchitis. (There are always exceptions to these guidelines when diagnosing, but they represent a good starting point for the process of elimination.) Other symptoms for LTV are coughing, gasping, reduction in production, watery eyes and conjunctivitis, and swollen sinuses.
