The effect of low intensity laser irradiation of inflamed udders on the efficacy of antibiotic treatment of clinical mastitis in dairy cows.

The aim of the study was to evaluate the effect of STP-99 laser irradiation applied locally to inflamed cow udders on the efficacy of clinical mastitis treatment with either intramammary infusions of antibiotic products or systemic injections of antibiotics. Examinations were carried out on 124 milking dairy cows suffering from clinical, bacterial mastitis. Cows with signs of local acute inflammation were treated with approved intramammary antibiotic products at labeled doses as control.

Sensitivity to antibiotics of Arcanobacterium pyogenes and Escherichia coli from the uteri of cows with metritis/endometritis.

The aim of the study was to determine the in vitro sensitivity of 161 Arcanobacterium pyogenes strains and 99 Escherichia coli strains isolated from the uteri of 312 cows with metritis/endometritis. Animals with pathological discharges were clinically diagnosed per rectum and per vaginum, and then swabs from the lumen of the uterus were aseptically collected. Bacteriological examination of swabs was according to commonly accepted procedures with the additional use of API tests.