Infectious Coryza is caused by a bacterium known as Haemophilus paragallinarum. This disease is commonly transmitted through contact of healthy birds with sick birds, through inhalation of airborne bacteria, and consuming contaminated feeds and water.
Symptoms are Watery diarrhea, stunted growth in chicks, rapid decrease in egg production, swelling of eyes and nose, foul smell and sticky discharge from both the eyes and nose and difficulty breathing.
The mortality rate caused by infectious Coryza ranges from 20% to 60%. However, the common range is 30%. This disease can last from a few days if controlled and months if not controlled.
This disease can be controlled through Vaccination of the birds regularly as recommended by a veterinarian, observation of standard cleanness to avoid concentration of ammonium gas in the coop, isolation of the sick birds from the healthy ones, and by always practicing bio-security.
Infectious Coryza can be treated using antibiotics i.e. tetracycline capsules, and bio-sol. A farmer can also use blackjack and pepper.
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