Liha töötlemine
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
of carcasses, as well as thermal treatments, likelihood of pathogen presence and transfer
such as use of steam/hot water-vacuum gen- onto carcasses (Biss and Hathaway 1995;
erating equipment for spot-cleaning, “steam Hadley et al. 1997; Bolton et al. 2002; Arthur
pasteurization,” or spraying with hot water. et al
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