Investigation of antimicrobial susceptibility and virulence factor genes in <i>Trueperella pyogenes</i> isolated from clinical mastitis cases of dairy cows

Abstract Trueperella pyogenes is an opportunistic pathogen causing important diseases including mastitis and metritis in domestic animals such as dairy cows leading to prominent economic losses food production industry. The aim of this study was investigate bacterial species, antimicrobial susceptibility, presence virulence factor genes genotyping T . isolates associated with summer cases from 22 different farms around Tehran, Iran. Fifty‐five percent clinical symptoms infected by pyogenesis indicated that the most contributor present study. A significant correlation illustrated between isolated pathogen, biochemical patterns, utter types. Multidrug resistance susceptibility observed need for prudent use antimicrobials treatment caused increased concerning consumer health recent problems resistance. categorization implemented into seven clonal related types COX‐PCR at 80% similarity cutoff significance relationship types, CAMP test result sampling time profile. Regarding results obtained study, can be considered typically cause purulent acute form bovine loss productivity. Further studies more sample size high‐throughput omic methods various areas are suggested precisely.