Effect of different types of stress on the Salmonella load in carrier pigs. Recovery of Salmonella Typhimurium bacteria from various organs and gut contents of carrier pigs that were subjected to either feed withdrawal (n = 6) or social stress, isolation (n = 3) and overcrowding (n = 9), 24 h before euthanasia. Six pigs were not stressed and served as a control group. The log10 value of the ratio of CFU/gram sample is given as the mean + standard deviation. Superscript (*) refers to a significant difference compared to the control group (p ≤ 0.05).