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KMID : 0359319750150010109
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Korean Journal of Veterinary Research
1975 Volume.15 No. 1 p.109 ~ p.114
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Survey of Bovine Mastitis in Gyeonggido
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Abstract
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A total of 2,065 quarter milk samples of 534 dair cows from 35 herds were examined for mastis and the results obtained were as follows:
1. 654 quarters (31.6%) of 301 dairy cows (56.3%) from 34 herds (97.1%) were iufected with mastitis. It was found that 8 cows (1.5%) showed clinical mastitis and other cows were subclinical.
2. Low infection rate of mastis was shown in first delivery cattle and higher infection rate in more deliverable of cattle.
3. The main causative organisms of the matitis were Staphylococcus aureus (19.4%), Streptococcus agalactiae (11.3%) and Streptococcus dysgalatiae (5%).
4. The majority of causative organisms were very resistant to colistin and highly sensitive to tetracycline. Especially Streptococcus strains were highly sensitive to leukomycin, and Staphylococcus aureus were highly sensitive to tetracycline and the other bacteria were highly sensitive to tetracycline and kanamycin.
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