Different Escherichia coli strains are important pathogens in neonatal diarrhoea in pigs. One important virulence factor of enteropathogenic E. coli is the ability to adhere to the epithelial cells in the small tntestine (Arbuthnott & Smyth, 1979). A surface-associated antigen that promotes colonization of porcine enterotoxigenic E. coli is the pi 1 us like K88 antigen (Smith & Linggood, 1971; Jones & Rutter, 1972). Other colonization-promoting antigens are K99 and 987P (Nagy et al., 1977). Enterotoxigenic E. coli strains which have the K88 antigen colonize mainly the upper part of the smaTT intestines of pigs, while the highest number of E_. coli with the 987P antigen are found in the terminal part (Smith & Huggins, T975T.

I. Edfors-Lilja, H. Petersson, B. Gahne

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 7. Symposia (1), , 390-394, 1982
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