Abstract:

Frequency of virulence factors in Escherichia coli isolated from pigs with postweaning diarrhea and edema disease in North Carolina

Karen W. Post DVM,MS; Brad T. Bosworth, DVM, PhD; Jenny L. Knoth, BS

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Polymerase chain reaction for five fimbriae (K88, K99, 987P, F41, F18), two heat-stable enterotoxins (STa, STb), one heat-labile enterotoxin (LT), and Shiga-like toxin type II (SLT) was performed on Escherichia coli isolates to determine their genotype among isolates from weaned pigs with diarrhea and/or edema disease in North Carolina. A total of 175 isolates were tested. All but two isolates possessed genes for at least one of the enterotoxins or fimbrial adhesins. Nearly all (94.86%) of the isolates that carried enterotoxin genes also carried genes for one of the fimbrial adhesins. The two predominant genotypes were K88 LT STb and F18 STa STb SLT, respectively.

Keywords: Escherichia coli, fimbrial adhesins, genotypes

RIS citationCite as: Post KW, Bosworth BT, Knoth JL. Frequency of virulence factors in Escherichia coli isolated from pigs with postweaning diarrhea and edema disease in North Carolina. J Swine Health Prod 2000;8(3):119-120.

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