Survival of Salmonella typhimurium and escherichia coli O157: H7 in poultry manure and manure slurry at sublethal temperatures

S. Himathongkham, H. Riemann, S. Bahari, S. Nuanualsuwan, Philip H Kass, D. O. Cliver

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

Exponential inactivation was observed for Salmonella typhimurium and Escherichia coli O157:H7 in poultry manure with decimal reduction times ranging from half a day at 37 C to 1-2 wk at 4 C. There was no material difference in inactivation rates between S. typhimurium and E. coli O157:H7. Inactivation was slower in slurries made by mixing two parts of water with one part of manure; decimal reduction times (time required for 90% destruction) ranged from 1-2 days at 37 C to 6-22 wk at 4 C. Escherichia coli O157:H7 consistently exhibited slightly slower inactivation than S. typhimurium. Log decimal reduction time for both strains was a linear function of storage temperature for manure and slurries. Chemical analysis indicated that accumulation of free ammonia in poultry manure was an important factor in inactivation of the pathogens. This finding was experimentally confirmed for S. typhimurium by adding ammonia directly to peptone water or to bovine manure, which was naturally low in ammonia, and adjusting pH to achieve predetermined levels of free ammonia.

Original languageEnglish (US)
Pages (from-to)853-860
Number of pages8
JournalAvian Diseases
Volume44
Issue number4
StatePublished - 2000

Keywords

  • Bacterial reduction time
  • Escherichia coli O157
  • Manure microbiology
  • Poultry
  • Salmonella

ASJC Scopus subject areas

  • Immunology
  • Cancer Research
  • veterinary(all)

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    Himathongkham, S., Riemann, H., Bahari, S., Nuanualsuwan, S., Kass, P. H., & Cliver, D. O. (2000). Survival of Salmonella typhimurium and escherichia coli O157: H7 in poultry manure and manure slurry at sublethal temperatures. Avian Diseases, 44(4), 853-860.