Journal of the Japan Veterinary Medical Association
Online ISSN : 2186-0211
Print ISSN : 0446-6454
ISSN-L : 0446-6454
Studies on Gangrenous Mastitis in Cows
II. Bacteriological Examination
ETSUJI HAKOGI[in Japanese][in Japanese][in Japanese][in Japanese]
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1980 Volume 33 Issue 10 Pages 485-489

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Abstract

The rates of detection of bacteria from the milk of the cows clinically infected with gangrenous mastitis and examined in this experiment are as follows: Escherichia coli, 50.9%; Pseudomonas aeruginosa, 17.0%; Klebsiella pneumoniae, Enterobacter aerogenes, Clostridium perfringens, Bacillus cereus, Staphylococcus aureus, and Streptococcus sp., 4.6% each; Alcaligenes faecalis, Acinetobacter anitratus, and Corynebacterium pyogenes, 1.5% each.
These bacteria were isolated from the affected udders and some mammary lymph nodes, but from few important organs. When the E. coli isolates were classified into serotypes, 5 strains belonged to O2, 2 strains each to O8, O75, and O88, and 1 strain each to O9, 064 O76, and O89. When the P. aeruginosa isolates were examined in the same manner, 2 strains each belonged to types E, F, and I and 1 strain each to types A, B, and G. The E. coli strains were sensitive to CL, CP, CTC, FM, KM, OTC, and SM, and the P. aeruginosa strains relatively sensitive to CL and SM.

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