Streptococcus uberis is an important causative agent for clinical and subclinical mastitis in dairy cattle in different countries such as Canada, the United States and also in several European ones as Belgium, Germany, Italy and UK (Collado et al., 2018; Kromker et al., 2014; Bradley et al., 2007). The control of this environmental microorganism could be particularly problematic (Boonyayatra et al., 2018), because Strep, uberis has several virulence genes, giving to it a higher spreading ability, conferring to it a contagious behaviour, as well as having a role in the pathogenicity. Different techniques (RAPD, PFGE, MLST) have been used in order to discriminate individual strains of Strep. uberis (Reinoso et al., 2015) more virulent than others circulating in the herd. The aim of this study was to investigate the genetic variability of Strep, uberis and distribution of its virulence factors in isolates comparing the virulence profiles obtained with the characterization by RAPD-PCR.
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