Liha töötlemine
and Smith 1998; Bacon et al. 2000; Geornaras slaughter facilities. Nevertheless, highly
and Sofos 2005; Kalchayanand et al. 2008). soiled animals with long wool and visible
Physical methods aim to mechanically fecal contamination are expected to introduce
remove soil from the external surfaces of in the slaughter plant higher microbial popu-
animals (e.g., hides) or carcasses, as well lations than shorn and “clean” animals (Biss
as to reduce microbial populations. They and Hathaway 1995; Hadley et al. 1997;
include animal washing/cleaning and/or hair- Duffy et al. 2005; Childs et al. 2006).
trimming before slaughtering, dehairing and Therefore, presentation of clean animals for
defeathering, knife-trimming, and washing slaughter is desirable because it reduces the