Effectivity of causal and symptomatic treatment of environmental mastitis in dairy cows
Vasil, M.(Univerzita veterinarskeho lekarstva, Kosice (Slovak Republic))
The aim of this work was to compare the effectiveness of intramammary antibiotic treatment of clinical mastitis caused by pathogenic environmental bacteria and frequent milking connected with the application of antiphlogistic agents to the udder. The results were obtained from the observation of 232 dairy cows and 489 udder quarters affected with clinical mastitis (subacute or light acute), respectively. Milk samples of the tested cows contained mainly coliform bacteria (21.2 %), Streptococcus uberis (44.9 %) and Streptococcus dysgalactiae (12.7 %) whereas 6.0 % of the samples contained other bacterial species and 15.2 % were bacteriologically negative. The positive animals were treated in one of the following ways: a - intramammary application of 200 mg cloxacilin and 75 mg ampicillin per quarter (both applied three-times at 12-hour intervals) b - intramammary application of 200 mg amoxicillin, 50 mg clavulanic acid and 10 mg prednisolon per quarter (all applied three-times at 12-hour intervals) c - frequent milking of the affected quarters (about six-times in 24 hours for 3-5 days) and massage after every second milking with 15 g of an antiphlogistic ointment. In 32 quarters oxytocin was also used for intramammary application (6 ml three-times at 6-hour intervals) The effectiveness of treatment was checked on days 7, 14 and 21 after termination. According to the results 73.3, 79.9 and 60.6 % of pathogenic bacteria were eliminated in the treated groups, respectively. Thus elimination of bacteria in the antibiotic-treated groups was increased by 14.7 and 18.9 % when compared to symptomatic treatment with antiphlogistics and frequent milking. Clinical symptoms disappeared in 80.9, 87.4 and 69.9 % of the respective treated animals.
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