The Most Common Chicken Diseases

When raising Chickens or any living Poultry, you shoukd be aware of the different types of Poultry / Chicken Diseases in order to observ them.

All the precaution need to be made to avoid any human contamination.

Check here the most common / frequent Poultry/ chicken diseases.

List of the most Common Chicken Diseases

1# Infectious Respiratory Chicken diseases

The most common Chicken Infection Respiratory diseases are:

  • Aspergillosis
  • Avain Influenza
  • Avian Metapneumovirus Rhinotracheitis/TRT
  • Infectious Bronchitis
  • Infectious Coryza
  • Infectious Laryngotracheitis
  • Mycoplasma Gallisepticum ‘CRD’
  • Mycoplasma Synoviae
  • Newcastle Diseas

Read also Introduction to Biosecurity: Chickens Coop & Farmer Health Security


2# Chicken Diseases: Neoplastic Diseases

Neoplasm is an abnormal growth of tissue which, if it forms a mass, is commonly referred to as a tumor. This abnormal growth (neoplasia) usually (but not always) forms a mass. ( source 1)

  • Lymphoid Leucosis
  • Marek’s disease

3# Avian Adeno virus Diseases

Aviadenoviruses are adenoviruses that affect birds – particularly chickens, ducks, geese, turkeys and pheasants. There are currently eight species in this genus including the type species Fowl aviadenovirus A.

Viruses in this genus cause specific disease syndromes such as Quail Bronchitis (QB), Egg Drop Syndrome (EDS), Haemorrhagic Enteritis (HE), Pheasant Marble Spleen Disease (MSD), Falcon adenovirus A and Inclusion Body Hepatitis (IBH).

Avian adenoviruses have a worldwide distribution and it is common to find multiple species on a single farm. The most common serogroups are serogroup 1, 2 and 3

No evidence of transmission from birds to humans has been identified. The virus is mainly spread horizontally by the oro-fecal route, but vertical transmission can occur in serogroup 1.
Once it has infected the bird the virus may remain latent until a period of stress, when it may then cause clinical disease.

The list of the most common Chicken related Diseases is:

  • Egg Drop Syndrome 76
  • Inclusion Body Hepatitis

4# Miscellaneous Viral Chicken Diseases

  • Avian Encephalomyelitis
  • Chicken Anaemia Virus
  • Fowl Pox
  • Infectious Bursal Disease
  • Malabsorbtion Syndrome/ Runting Stunting Syndrome
  • Reo virus infections

5# Miscellaneous Bacterial Diseases

  • Colibacilosis
  • Fowl Cholera
  • Infectious Synovitis
  • Necrotic Enteritis
  • Ornithobacterium Rhinotracheale (OR)
  • Pullorum disease/Fowl Typhoid
  • Parasitic Diseases
  • Blackhead
  • Coccidiosis
  • Red Mite
  • Worms

One of the most common and most known bacteria-based chicken infections is Solmonella.
Read more about All About Backyard Chickens Salmonella: Infections & Precautions


6# Deficiency Diseases

A Deficincy Diseases, in general, are a disease caused by the lack of an element in the diet, usually a particular vitamin or mineral.
Here the most common Chickens Deficiency Diseases:

  • Riboflavin
  • Vitamin D3
  • Vitamin E

7# Food Safety in Poultry

  • Introduction
  • Salmonellosis
  • Campylobacter

Source & References :