Poultry diseases occur in poultry, which are domesticated birds kept for their meat, eggs or feathers.

Viral diseases

thumb|alt=Side view of a yellow chick leaning forward, with its eye closed, beak wide open, and feathers in a disheveled state.|8 day old chick with difficulty breathing, due to an Avian influenza infection.

  • Avian infectious bronchitis, caused by a strain of Avian coronavirus previously known as infectious bronchitis virus
  • Avian infectious laryngotracheitis, caused by Gallid alphaherpesvirus 1
  • Avian influenza, caused by Avian influenza virus
  • Duck plague, caused by Anatid alphaherpesvirus 1
  • Chicken infectious anemia, caused by Chicken anaemia virus
  • Epidemic tremor, caused by Tremovirus
  • Fowlpox, caused by viruses in the genus Avipoxvirus
  • Infectious bursal disease (IBD), also known Gumboro disease, caused by Infectious bursal disease virus
  • Lymphoid leukosis caused by avian sarcoma leukosis virus
  • Marek's disease
  • Newcastle disease
  • Viral arthritis, caused by Avian reovirus

Parasitic diseases

thumb|Infestation of Echidnophaga gillinacea fleas on the comb and around the eye of a chicken

  • Scaly leg, caused by the mite Knemidocoptes mutans
  • Infestation by Dermanyssus gallinae, the red poultry mite
  • Infestation by Echidnophaga gallinacea, the sticktight flea

Bacterial diseases

  • Colibacillosis in poultry
  • Infectious coryza in chickens
  • Ornithobacterium rhinotracheale
  • Pullorum disease
  • Riemerella anatipestifer
  • Salmonellosis in poultry
  • Staphylococcal infection in poultry
  • Streptococcal infection in poultry
  • Omphalitis in chicks (mushy chick disease)
  • Mycoplasmosis
  • Fowl cholera
  • Campylobacteriosis
  • Pseudomonas
  • Ornithobacteriosis

Protozoal diseases

  • Histomoniasis (blackhead disease), caused by Histomonas meleagridis
  • Coccidiosis
  • Trichomonas gallinae

Fungal diseases

  • Ergotism, which occurs when poultry feed is contaminated with toxic alkaloids produced by fungi of the genus Claviceps
  • Aspergillosis, a non-contagious disease caused when birds inhale Aspergillus spores that cause breathing to be hard for the bird
  • Ringworm

References