Intramammary application of ozone therapy to acute clinical mastitis in dairy cows

The infusion of ozone into the inflamed quarter of cows with clinical masti tis was performed and the efficacy of ozone therapy was evaluated. Ozone wa s infused into the inflamed quarter via a teat canal using ozone gas genera ting equipment. Nineteen Holstein cows with acute clinical mastitis were di vided into two groups: 15 cows treated with ozone therapy, and 4 cows treat ed with antibiotic therapy. Systemic and local clinical signs, California M astitis Test scores, the mastitis causing pathogens, electronic conductivit y of milk, and somatic cell counts in milk from ozone- and antibiotic-treat ed quarters, were compared between the groups. Sixty percent (9/15) of cows with acute clinical mastitis treated with ozone therapy, did not require a ny antibiotics for recovery. This newly developed ozone therapy method was proven to be effective, safe, and cost effective, and carries no risk of dr ug residues in milk.