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| Title: | THE EFFICIACY OF VARIOUS SALMONELLA INTERVENTION METHODS APPLIED TO PORK CARCASSES DURING SLAUGHTER |
| Authors: | Clayton, Nathan C. |
| Keywords: | Salmonella
Intervention
Carcass Decontamination
Pork Slaughter |
| Date Created: | 2002 |
| Publisher: | University of Kentucky |
| Abstract: | Twenty-one market-age swine slaughtered in the University of Kentucky
abattoir were inoculated with fecal slurry containing two strains of nalidixic acid
resistant Salmonella typhimurium on the ham, belly, and jowl regions on each
side of the carcass. Trial 1 revealed that a 10 s hot water spray was just as
effective as the 20 s spray in removing S. typhimurium, as there was no
distinguishable difference in population. The shorter flame singe (10 s) was as
effective as the 20 s application and the two chlorine solutions (100, 200 ppm)
had similar results. The 2% lactic acid spray reduced S. typhimurium populations
significantly more than the 1% treatment. Trial 2 compared the four most
efficient levels of each intervention method. Efficacy of the intervention methods
was observed in the following order: Hot water (10 s) > Chlorine (50 ppm) =
Lactic acid (2%) > Flame (10 s). The effect of carcass area was significant
following the post treatment hot water rinse. The jowl area was least accessible
by the high pressure water spray. However after the treatment applications, hot
water rinse, and 24 h chill (2ºC) there was no significant difference between
treated and untreated carcasses or between carcass areas. |
| URI: | http://hdl.handle.net/10225/85 |
| Appears in Collections: | Electronic Theses and Dissertations
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| ncthesis.pdf | | 413Kb | Adobe PDF | View/Open |
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