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Comparison of the invitro adhesion of K88, K99, F41 and P987 positive ***Escherichia coli*** to intestinal villi of 4- to 5-week-old pigs
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| Abstract |
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| The adhesion of K88ab, K88ac, K88ad, P987, K99, F41 and K99/F41 positive Escherichia coli strains to duodenal, jejunal and ileal villi was studied using an in vitro adhesion assay. The villi were harvested from 4- to 5-week-old pigs. The K88+ strains adhered in large numbers (42 +/- 5 to 81 +/- 4 E. coli/250 mum villous length) to the villi from most pigs and in low to moderate numbers (5 +/- 2 to 24 +/- 7 E. coli/250 mum villous length) or not to villi of some pigs. The K99+ and F41+ strains either adhered in low numbers (1 +/- 1 to 11 +/- 2 E. coli/250 mum villous length) or did not adhere, whereas the P987+ and K99/F41+ strains always adhered in low to moderate numbers (2 +/- 1 to 26 +/- 2 E. coli/250 mum villous length). The number of bacteria adhering to the villi was the highest for the K88ab+ and K88ac+ strains (55 +/- 5 to 81 +/- 4 E. coli/250 mum villous length) and decreased in the following order: K88ad > P987 > K99/F41 > K99 > F41 (= 1 +/- 1 to 4 +/- 1 E. coli/250 mum villous length). There was no difference in the adhesion of the villi of the different small intestinal segments for the P987+ and F41 + strains. The K99+ strains adhered significantly more to the villi of the caudal half of the small intestine, the K99/F41+ strain to jejunal and ileal and the K88+ strains to jejunal villi in comparison to duodenal ones. |
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English
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Veterinary microbiology. - Amsterdam | |
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Amsterdam : 1993
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0378-1135
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34:1(1993), p. 7-18
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A1993KJ95900002
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