prevalence of bacterial pathogens isolated from bovine clinical mastitic milk, fars, iran

Bovine mastitis is a devastating disease causing huge losses to the dairy industry worldwide. this study aimed to investigate the prevalence of causative pathogens of bovine clinical mastitis in fars, iran, from march 2023 to march 2024. methods: a total of 77 clinical mastitic milk samples referred to the laboratory were assessed to isolate causative agents using culture and biochemical tests. the samples were initially cultured on blood agar and macconkey agar, and after incubation, the isolates were then biochemically tested for bacterial genus identification. results: the predominant isolated bacterial pathogens were escherichia coli (32.47%), followed by streptococcus spp. and coagulase-negative staphylococci (14.28%), and coagulase-positive staphylococci (11.69%). other isolated bacteria included klebsiella spp. (9.1%), bacillus cereus (6.5%), corynebacterium spp. (5.19%), pseudomonas spp. (3.9%), and micrococcus spp. (2.6%). conclusion: this study highlights the importance of environmental mastitis among dairy cows and shows the necessity of environmental health measures to prevent bovine clinical mastitis.