Molecular Identification of Streptococcus agalactiae Virulence Factors in Isolates Recovered from Subclinical Mastitis in Dairy Herds fromAntioquia, Colombia

摘要

Bovine mastitis is one of the most common and costly diseases in dairy farms worldwide, and is produced by a wide range of microorganisms. Streptococcus agalactiae has been considered a highly contagious pathogen causing bovine mastitis, which is transmitted during the milking period (Keefe, 2012). This pathogen has been eradicated in North American dairy herds, but continues to be a major cause of subclinical mastitis in countries with emerging dairy industries like Colombia (Keefe, 2012). Molecularidentification of the genetic variation of Streptococcus agalactiae has previously reported in Colombia (Reyes Velez, 2016); however there is scarce information about the virulence factors in the country. The main objective of this research was to perform molecular characterization using virulence markers of Streptococcus agalactiae isolates recovered from subclinical mastitis events.