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Year 2012 - Volume 32, Number 8
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Moraxella bovoculi in cases of infectious bovine keratoconjunctivitis in Rio Grande do Sul, Brazil, 32(8):743-746
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ABSTRACT.- Libardoni F., Scherer C.F.C., Farias L., Vielmo A., Balzan C. & Vargas A.C. 2012. [Moraxella bovoculi in cases of infectious bovine keratoconjunctivitis in Rio Grande do Sul, Brazil.] Moraxella bovoculi em casos de ceratoconjuntivite infecciosa bovina no Rio Grande do Sul. Pesquisa Veterinária Brasileira 32(8):743-746. Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Avenida Roraima 1000, Cidade Universitária, Camobi, Santa Maria, RS 97105-900, Brazil. E-mail: agueda.vargas@gmail.com
Infectious keratoconjunctivitis (IK), although rarely fatal, results in significant economic losses for cattle and sheep farmers. The main causative agents of this disorder are Moraxella bovis and Moraxella ovis. In 2007, a new species also responsible for IK was described. This newly described pathogen, called Moraxella bovoculi, was never reported in Brazil. Therefore, the aim of this study was confirmed the M. bovoculi among the samples analyzed. For this, 54 isolates of Moraxella spp. from clinical samples derived from 34 cattle and 18 sheep, sent to the laboratory of bacteriology from 1991 to 2011 was characterized. Differentiation among the species was based on genotypic characteristics, using partial amplification of 16S-23S intergenic region and cleavage products of amplification with enzyme RsaI. Results showed that 25 isolates (46%) were characterized as M. bovis, 17 (32%) as M. ovis, and 12 (22%) as M. bovoculi. This means that M. bovoculi is present among cattle herds in Rio Grande do Sul and, therefore, in Brazil. |
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