(5) infection and WP fermented with Lactobacillus plantarum WP LAB2): and (6) infection and WP fermented with Weissella viridescens INF wp LAB3) Piglets in groups 2 to 6 were inoculated with E. coli F4 on day 2 and 3 after weaning. Faeces were collected on days 2.3.4. 5.6and8 and the pigs were sacrificed on day 11.