To study the sensitivity of field strains of <i>Str. agalactiae</i> and <i>Str. uberis </i>— causative agents of cow mastitis to a drug based on marbofloxacin

An increase in the number of resistant strains mastitis pathogens Str. agalactiae and uberis is one causes massive subclinical clinical cows. The aim study was to sensitivity field Agalactiae drug based on marbofloxacin «Marboflocin 10%» (LLC «AleksAnn»), as well a most commonly used antibacterial drugs (ABP). Sensitivity determined by method serial dilutions, other — disco-diffusion method. 15 samples breast secretions from cows with form were examined, which cultures streptococci isolated, including 53.3% samples. All isolated susceptible marbofloxacin. mean value minimum inhibitory concentration (MIC) for 0.50 µg/ml, 0.44 ± 0.13 µg/ml. To drugs, studied showed different sensitivity, resistance amoxicillin revealed, incl. clavulanic acid, tylosin