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Avian metapneumovirus (aMPV) is the etiologic agent of a respiratory disease of poultry. In a 6 months period from October 2012 to March 2013, broiler flocks with respiratory signs are examined in northern Iran. The purpose of the given research was to define presence of antibodies of the birds’ avian metapneumovirus among broilers and detection of virus. Birds were not vaccinated against this virus. Total 525 blood samples and trachea/nasal turbinates swabs were obtained from 35 commercial broiler flocks and pooled (5 swabs/pool), then RT-PCR method was done on these 105 pooled samples. Presence of antibodies against the bird's metapneumovirus in each serum sample has been tested by method of immune-enzyme analysis. 10 (28.5%) flocks had positive antibodies. Of the 35 flocks, 8 were positive by RT-PCR with Nd/Nx primers (23%). This is the first report of APV infection in northern Iran. Vaccination programs should be adjusted to include the APV vaccine to aid in the control of this respiratory disease in the Iranian poultry industry.

The Role Of Avian Metapenumovirus In Respiratory Complex Disease Circulating In Broilers In Northern Iran