Five activities of the slaughter line: evisceration,
renal-capsula removal, lard removal, kidney extraction and fat removal
were sampled five times during the slaughtering of the selected batches.
The points were selected on the basis of a previous study in the same
slaughterhouse in which these points were frequently contaminated
(Arguello et al., 2012). Except for the fat removal point, where two different
samples were collected, one from the personnel and the other from
the tool used, the hands of personnel together with their instruments
(knives basically) were sampled together. Samples were collected using
sterile gauzes previously moistened in BPW. The first sampling of each
point was programmed before the onset of the activity, while the other
four were distributed uniformly along the slaughtering of the monitored
batches