02386naa a2200301 a 450000100080000000500110000800800410001910000180006024501570007826000090023552014030024465000130164765000170166065000290167765300240170665300240173065300270175465300190178165300290180065300260182970000280185570000240188370000240190770000260193170000230195770000160198077300880199620422122016-03-30       2015    bl uuuu     u00u1 u    #d1 aSÁ, S. G. de  aOccurrence and risk factors assessment associated with Mycoplasma gallisepticum (MG) infection in chickens in the semiarid region of Pernambuco, Brazil.  c2015  aThe aim of the present study was to assess the occurrence of Mycoplasma gallisepticum (MG) infection and risk factors of this disease in three hundred serum samples from on 23 familiar agricultural properties in the semiarid region of the state of Pernambuco, Brazil. ELISA was used to study antibodies anti-Mycoplasma gallisepticum. The univariate analysis (chisquared test or Fischer?s exact test) followed by multivariate analysis (logistic regression) were used to assess the risk factors with two variables: management and sanity of the poultry. It was detected a frequence of 53.33% (157/300) of the birds were positive for MG, with 100% foci. The risk factors confirmed by multivariate analysis, in the present study, were the presence of other poultry species on the property, including Numida meleagris (OR=2.22; p=0.005), parrots (OR=1.72; p=0.027), and of passerines (OR=1.88; p=0.007). These results showed that Mycoplasma gallisepticum infection is endemic among backyard poultry in the semiarid region of the state of Pernambuco. These birds could be a source of infection for other wild or domestic poultry. . This is the first report of the occurrence of avian mycoplasmosis in backyard poultry in the state of Pernambuco in northeastern Brazil. The risk factors identified should serve as a parameter for the health authorities to seek solutions related to controlling the disease.  aChickens  aRisk factors  aMycoplasma Gallisepticum  aAvian mycoplasmosis  aAvicultura familiar  aFamily poultry farming  aFator de risco  aGallus gallus domesticus  aMicoplasmose aviária1 aPINHEIRO JÚNIOR, J. W.1 aVILELA, S. M. de O.1 aMORAES, E. P. B. X.1 aALBUQUERQUE, P. P. F.1 aFERREIRA, D. R. A.1 aMOTA, R. A.  tPesquisa Veterinária Brasileira, Brasília, DFgv. 35, n. 6, p. 531-535, jun. 2015