Infectious fowl coryza is an acute respiratory worldwide chicken disease. Which is also referred to as a cold or roup. It is caused by the bacterium Haemophilus paragallinarum. This disease primarily affects chickens, but quail and pheasants may also be affected. Ways of Transmission Chickens of all ages are susceptible, but susceptibility increases with age. The incubation period is 1 to 3 days, and the disease duration is usually 2 to 3 weeks. 1. Direct bird-to-bird contact 2. Consuming contaminated feed and/or water 3. Breathing airborne bacteria. Infected flocks are a constant threat to uninfected flocks. Signs of Fowl Coryza Signs of coryza include the following: 1. Swelling around the face 2. Foul-smelling 3. Thick and sticky discharge from the nostrils and eyes 4. Laboured breathing 5. The eyelids of an infected bird can become irritated and might stick together. 6. Diarrhoea may occur. 7. Growing birds may become stunted. 8. Infection
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