Detection of Escherichia coli, strains K88, K99 and K987 P by plate agglutination test
1985
Lek Tanasugarn (Wellknown International Co, Ltd., Bangkok (Thailand))
E. coli diarrhea in baby pig is one of the most serious health problems in the swine industry. In some herds mortality may exceed 50 % and morbidity may be 100 %. E. coli are among the most common bacteria found in man and domestic animals. Three of the most common types of piliated E. coli (D88, K99 and K987 P) are serious causative agents of colibacillosis in swine. While most strains of E. coli safely pass through the pig's gut, three strains attach themselves to the small intestine, all by means of hair-like projections called "pili". Once established in the small intestine, they reproduce rapidly, producing enterotoxins which cause the pig to lose large quantities of fluid, as much as 20 % of the total. Body fluid may be lost through diarrhea in a short time. The pilicoated latex antigen (Salsbury Laboratory, Inc.) was used for the detection of E. coli, strains K88, K99 and K987 P by plate agglutination test. From 32 samples of Sow' serum, K88 was detected in 29 samples, K99 was detected in 28 samples and K987 P was detected in 5 samples. From 5 samples of piglets serum, K88 was detected in 2 samples. From 2 samples of Boar serum, K88 was detected in 2 samples, K99 was detected in 2 samples and K987 P was detected in one sample. This discovery indicates that E. coli, strains K88, K99 and K987 P are prevalent in Thailand.
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