Silva, Claudiane Barbosa Carrara daChagas, Wadia de FreitasSantos, Renata Ferreira dos [UNESP]Gomes, Lívia ResendeGanda, Muriell RibeiroLima, Anna Monteiro Correia2015-10-212015-10-212015-01-01Brazilian Journal Of Poultry Science. Campinas: Facta-fundacio Arnco Ciencia Tecnologia Avicolas, v. 17, n. 1, p. 57-62, 2015.1516-635Xhttp://hdl.handle.net/11449/129002Avian salmonellosis and mycoplasmosis are infectious diseases that, in addition of causing lack of flock uniformity, represent a hazard to human health. The objective of the present study was to evaluate the seroprevalence of mycoplasmosis and salmonellosis in commercial broilers, backyard chickens, and spent hens slaughtered at a processing plant with local health inspection in Uberlandia, MG, Brazil. A total of 210 samples were randomly collected at the time of bleeding. Samples were submitted to rapid plate serum agglutination test (RSA) for the classification of Salmonella pullorum, Salmonella gallinarum, Mycoplasma gallisepticum and Mycoplasma synoviae. In order to increase result specificity, mycoplasmosis-positive samples were submitted to hemagglutination inhibition test (HI). No samples presented detectable antibodies against Salmonella pullorum or Salmonella gallinarum in the RSA test. Only Mycoplasma synoviae was detected in 14% of the backyard chickens and 0.74% in commercial broilers, whereas no antibodies were detected in spent hens. The seroprevalence rates found in the present study emphasize the need of keeping chicken flocks free from disease using effective biosafety systems.57-62engSalmonella pullorumSalmonella gallinarumMycoplasma gallisepticumMycoplasma synoviaeGallus gallusArtigo10.1590/1516-635x170157-62S1516-635X2015000100057WOS:000352243400009Acesso abertoS1516-635X2015000100057.pdf