Mastitic cows were randomly divided into five
groups. Group I (70 μg/L O3): 7 cows with 12 infected
quarters; Group II (only antibiotic (AB), im): 9 cows
with 24 infected quarters. Group III (70 μg/mL O3 +Antibiotic
im): 9 cows with 24 infected quarters. Group IV
(30 μg/mL O3): 4 cows with 10 infected quarters; Group
V (60 μg/mL O3): 3 cows with 9 infected quarters. According
to the antimicrobial agent selection, antibiotic
(Sefakim®) was administered daily at 2.2 mg/kg dose
24-h intervals for 5 days intramuscularly (im) to groups
II and III’s animals and ozone gas was prepared with