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Reticuloendotheliosis

Reticuloendotheliosis is a neoplastic (tumor causing) disease of chickens, caused by a group of reticuloendotheliosis viruses (REVs) belonging to the Retroviridae family. REVs affect a wide range of avian species, including turkeys, ducks, geese, peafowl and pheasants. Reticuloendotheliosis is characterized by immunosuppression, runting-stunting syndrome, chronic lymphomas, and chronic neoplasm, which resemble a combination of Marek's disease and Avian leukosis.

Transmission


REVs are transmitted horizontally through fecal-oral route, vertically, and accidentally through contaminated vaccines.

Symptoms

Weight loss
Pale comb and wattle
Occasional paralysis
Abnormal feathering
Depression

Diagnosis

  • History of recent vaccination
  • Clinical signs
  • Agar gel precipitin test
  • ELISA
  • Indirect fluorescent antibody test
  • Serum neutralization test
  • PCR - Is the method of choice for diagnosis of REV
  • Virus isolation

Treatment

MethodDetails
St Johns wort (Hypericum Perforatum)3 doses of 30xBackyard Chickens member
Thymulin 5cHDiluted into drinking waterSato C et al., 2012

Prevention

Scientific References