Pathogens isolated from bovine clinical mastitis and their antimicrobial resistance

This study aimed to isolate aerobic and microaerophilic bacteria from mastitis milk samples, as well determine their antibiotic resistance. A total of 196 bovine samples were tested by standard bacteriological methods with API identification test kits. Antimicrobial susceptibility testing was performed the Kirby-Bauer disk diffusion method. The results revealed that predominant S. aureus, an isolation rate 28%, followed Streptococcus spp. (27%) E. coli (19%). Isolation rates for Corynebacterium spp., Mycoplasma Pseudomonas aeruginosa 11%, 6%, 4%, respectively. Compared mentioned above, lower percentages observed Trueperella pyogenes (2%), Pasteurella multocida Klebsiella pneumoniae (1%). broad evaluation antimicrobial resistance showed pathogens resistant tetracycline (68.63%), oxytetracycline (41.57%), ampicillin (39.08%), ceftiofur (38.1%), cephalexin (32.26%), penicillin (31.25%), amoxicillin/clavulanic acid (24.53%), enrofloxacin (24.44%), gentamycin (23.68%), trimethoprim/sulfamethoxazole (22.09%). demonstrated sources isolated both contagious environmental. More importantly, present demonstrate a critically high in dairy cattle. For instance, isolates crucial commonly used recommended antimicrobials, including (100%), (83.33%), (94.44%). this may provide valuable information about clinical aspects infections current levels