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Antibiogram and Coagulase Diversity in Staphylococcal Enterotoxin-Producing Staphylococcus aureus from Bovine Mastitis

Cited 38 time in Web of Science Cited 49 time in Scopus
Authors
Moon, J. S.; Lee, A. R.; Kang, H. M.; Lee, E. S.; Joo, Y. S.; Park, Yong Ho; Kim, M. N.; Koo, H. C.
Issue Date
2007
Publisher
American Dairy Science Association
Citation
J. Dairy Sci. 90:1716–1724
Keywords
bovine mastitisStaphylococcus aureusenterotoxincoagulase polymorphism
Abstract
We investigated antibiogram and coagulase gene diversity in staphylococcal enterotoxin (StE)-producing Staphylococcus aureus isolated from raw milk samples of cows infected with mastitis from 140 dairy farms in Korea between 1997 and 2004. Of the 696 Staph. aureus isolates collected in this study, 164 isolates (23.6%) produced one or more staphylococcal enterotoxins (A to D), and 19 isolates (2.7%) were methicillin-resistant. The percentage of StE-producing Staph. aureus (SES) isolates resistant to methicillin, kanamycin, neomycin, amikacin, and tetracycline was greater than that of non-SES. Ten coagulase genotype patterns were observed, including 4 main types comprising I (25.4%), II (13.9%), VII (13.2%), and VIII (17.8%). More than 4 Staph. aureus types were isolated from each of 82 dairy farms in different geographic locations, and only 1 coagulase genotype pattern was observed in 39 of the herds (47.6%). There was no significant correlation between coagulase genotypes harbored by Staph. aureus and their specific StE type. The percentage of isolates producing major StE types (A, B, AC, and ABCD) and being resistant to cephalothin and methicillin was greater among the Staph. aureus isolates with the 4 predominant coagulase genotypes (I, II, VII, and VIII) than among the isolates harboring the 6 rare coagulase types (III, IV, V, VI, IX, and X). Based on coagulase gene polymorphisms, our data indicate that a broad distribution of identical or closely related enterotoxin-producing Staph. aureus strains seem to contribute to bovine mastitis in the Republic of Korea.
ISSN
0022-0302
Language
English
URI
http://hdl.handle.net/10371/7052
DOI
https://doi.org/10.3168/jds.2006-512
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College of Veterinary Medicine (수의과대학)Dept. of Veterinary Medicine (수의학과)Journal Papers (저널논문_수의학과)
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