Identificação de Avibacterium paragallinarum em frangos de corte e poedeiras comerciais no Estado de Pernambuco

Abstract

The Brazilian poultry industry is susceptible to infectious disease outbreaks related to economic losses, mainly for infectious diseases caused by Mycoplasma, Avibacterium paragallinarum and viruses affecting the respiratory tract. A. paragallinarum is an important pathogen that causes avian infectious coryza. For diagnostichistory CI is necessary, isolation of bacteria and then a suspected biochemical, another possibility is the polymerase chain reaction (PCR) for the accurate identificationof the agent. The objective of this study researching the involvement of A. paragallinarum in avian respiratory disease outbreak. We collected 18 swabs of intranasal content of birds, of which 6 samples of chickens with clinical signs and 12 hens with clinical signs. Samples were grown in specific media for the agent also tested with the molecular technique of Polymerase Chain Reaction. Of the samples analyzed in isolation, 100% were negative. PCR in only two (16,66%) were positive. The detection of A. paragallinarum PCR in laying hens with clinical signs respiratory indicates that this bacterium is associated with the etiology of respiratory syndrome in poultry farms in the state of Pernambuco.