Investigational aspects of Bird flu during outbreaks

If there is a suspicion of Avian influenza (AI) in poultry, a thorough investigation by veterinarians of the Department of Animal Husbandry of the States should be carried out as follows:

  • Identification of diseased birds:– marked depression– scuffled feathers– sudden drop in egg production
  • Clinical signs:– The birds will show marked depression.– There may be coughing, sneezing, rales, and excessive lacrimation, oedema of head and face, blueness of the unfeathered skin, nervous disorder and diarrhoea.– There will be sudden and high mortality without showing any clinical signs.
  • Postmortem Lesions:– Mild lesions are characterized by nasal discharge, catarrhal, fibrinouos, sero-fibrinous discharge, oedema of face, ombhalitis.– Highly pathogenic avian influenza is characterized by subcutaneous haemorrhages and oedema of head and sinuses.– Haemorrhages are also observed in the visceral organs.
  • Material to be collected:– Clinical specimen in the form of tracheal and cloacal swabs from live birds or tissues from lung, trachea, spleen intestine, air-sac, brain should be forwarded on ice.
  • Material may be sent to;– State Veterinary Colleges– Regional Disease Diagnostic Laboratories (RDDLs) of the Department of Animal Husbandry & Dairying in different regions of the country

    – High Security Animal Disease Laboratory- Bhopal

    – Any of the laboratories of IVRI at Izatanagar, Bangalore, Kolkata and Mukteswar (with a copy to Head, Avian Diseases Division, IVRI, Izatanagar)

For more details please download the attachment- PPT.


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