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Title: Identification of Escherichia coli Recovered from Milk of Sows with Coliform Mastitis by Random Amplified Polymorphic DNA (RAPD) Using Standardized Reagents
Authors: P. Ramasoota
K. Krovacek
N. Chansiripornchai
A. Pedersen Mörner
Stefan B. Svenson
Sveriges lantbruksuniversitet
Mahidol University
Bayer AG
Chulalongkorn University
Keywords: Veterinary
Issue Date: 1-Dec-2000
Citation: Acta Veterinaria Scandinavica. Vol.41, No.3 (2000), 249-259
Abstract: A standardized-reagents commercial kit for random amplified polymorphic DNA (RAPD) analysis was used for typing 58 Escherichia coli strains that were recovered from the milk of sows, having coliform mastitis, within a single swineherd in Sweden. Previously, the 58 E. coli strains were characterized serologically and profiled biochemically. They were also evaluated for their serum resistance and their ability to adhere to fibronectin and bovine fetal fibroblasts. The RAPD analysis was fast, easily performed, and required only a nanogram of DNA. The indistinguishable banding patterns obtained with repeated analyses of 2 isolates from each strain demonstrated that RAPD analysis using standardized beads is a technique that provides reproducible results for typing E. coli strains that cause mastitis in sows. The results of the RAPD analyses demonstrated that E. coli sow mastitis strains are highly variable in serotype, biochemical profiles, virulence factors, and RAPD type, and that all 58 strains can be differentiated by means of the RAPD technique. The strains grouped into 24 RAPD types by combining the results of 2 primers, and into 38 groups by combining the results of serotype and RAPD type. No relationship between serotypes, virulence factors and RAPD types was found.
ISSN: 0044605X
Appears in Collections:Scopus 1991-2000

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