AFLP genotypes were arbitrarily designated by a lower case ‘p’ followed by a number (see Table 4). In vitro resistance to benzylpenicillin (PEN), erythromycin (ERY), imipenem (IPM), levofloxacin (LVX), linezolid (LZD), metronidazole (MTZ) and/or tetracycline (TET) is indicated between parentheses. The number of isolates belonging to each strain type (when different to one) is shown between square brackets. Dashes mean that C. perfringens was not isolated from the corresponding animal. NA: not analyzed (a single fecal swab was available for some animals, and this was used for C. difficile testing).