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KMID : 0359319700100011039
Korean Journal of Veterinary Research
1970 Volume.10 No. 1 p.1039 ~ p.1045
Studies on Epidemiological Investigations and Therapy of Mastitis



Abstract
A total of 835 quarter milk samples of 212 dairy cows from 14 herds were examined for mastitis and the results obtained were as follows;
1. Three hundred and fifty-eight quarters (42.9%) from 149 cows (70.3%) were found to be infected with mastitis. It was found that 11(1.3%) of the infected quarters were clinical mastitis and all of the rest were subclinical mastitis.
2. Streptococcus agalactiae (62 quarters) and Staphylococcus aureus (42 quarters) were the main two causative organisms of the mastitis. Streptococcus dysgalactiae, Streptococcus uberis, other streptococci, Corynebacteria, and Yeast were also found to cause the infection.
3. The majority of Staphylococcus aureus strains were sensitive to penicillin, orbenin, terramycin, and leucomycin, however, the most of Streptococcus strains were sensitive to penicillin and orbenin only.
4. Penicillin and orbenin were highly effective in the treatment of mastitis, especially orbenin for Staph ylococcus aureus infection and penicillin for Streptococcal infection.
5. A mastitis control program for dairy farms in Korea was discussed and recommended.
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학술진흥재단(KCI)