Occurrence of Listeria species in broilers pre- and post-chilling in chlorinated water at two slaughterhouses.
Altogether 323 pooled samples of neck skins from 1615 broilers from 2 processing plants (A and B) were examined for the presence of Listeria species. The broilers were sampled pre-chilling-after leaving the final rinser but before entering the chiller with chlorinated water-and post-chilling-immediately upon leaving the chiller. Free available chlorine in the chilling water varied from 2 to 15 ppm in plant A and was about 10 ppm in plant B. Listeria monocytogenes was only isolated from broilers in plant A sampled post-chilling (58% of 62 samples). L. innocua was isolated from 19% and 39% of broilers sampled pre-chilling in plants A and B, respectively. Post-chilling, L. innocua was isolated from 3% and 6% of samples from plants A and B, respectively.
Loncarevic
S
S
Department of Food Hygiene, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala.
Tham
W
W
Danielsson-Tham
M L
ML
D000003:Abattoirs; D000818:Animals; D002645:Chickens; D002713:Chlorine; D003080:Cold Temperature; D005511:Food Handling / Q000379:methods; D005516:Food Microbiology; D008087:Listeria / Q000302:isolation & purification*; D008460:Meat / Q000382:microbiology*
D002713:Chlorine