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...