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Pigeon showing extreme swelling of the eyelids

Severe swelling of the eyelid in haemophilus catarrh (so-called "owl’s head")

Information


Haemophilus Catarrh


Pathogen/Cause:
Haemophilus bacteria (p.e. Haemophilus gallinarum).
Infected although apparently healthy poultry serve to spread the organism. Haemophilus is transmitted via the drinking water, which is contaminated with nasal discharge.

Symptoms of the disease:
Severe bilateral conjunctivitis with mucopurulent discharge. Extreme swelling of the eyelids ("owls head"). Catarrh symptoms.

Recognition of the disease:
Bacteriological examination of eye or nasal discharge.

Similar conditions:
Ornithosis.

Unilateral one-eye cold. This transient condition manifests itself in the form of conjunctivitis.
Pasteurellosis, a bacterial infection, may also cause conjunctivitis which, in this case, is usually bilateral.

Treatment:
Treatment of the flock: Over a period of 5 days

aviosan (½ sachet per 2 litres of water)
o r
chevimulin-t
(1 sachet per 2 litres of water)

Disinfection of the flock: desinfectans

Prevention:
Elimination of possible factors that reduce the bird’s resistance to infection. Such factors may be: overcrowding in the loft, lack of cleanliness, latent infections (e.g. ectoparasites, worm infestations, coccidial infection), excessive stress in breeding, deficient feed, poor water supply, stress during the racing season.


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