Evaluation of commercial odor control agents for suppressing Escherichia coli in swine manure slurry.
Ten commercially available manure odor control agents were evaluated in bench-scale laboratory microcosms for their ability to inhibit or kill Escherichia coli, a commonly used indicator of fecal pollution and a potential pathogen. At manufacturer recommended rates, none of the agents reduced viable populations of E. coli in pure cultures or in swine manure slurry. However, at rates 10-fold higher than those recommended by the manufacturer, EnviroPur rapidly reduced viable populations of E. coli. Accelerated death of E. coli was observed at temperatures as low as 4 degrees C. Chemical analysis of EnviroPur indicated that it contains alkylphenol polyethoxylates, common industrial surfactants. These results suggest that at manufacturer-recommended rates, the odor-controlling agents would not be effective at suppressing E. coli in stored swine manure slurry.
Johnston
Della
D
Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON, Canada N5V 4T3.
Chapman
Ralph
R
Massé
Daniel
D
Topp
Edward
E
D000383:Agriculture; D000818:Animals; D004787:Environmental Pollution / Q000517:prevention & control; D004926:Escherichia coli; D009812:Odorants; D011157:Population Dynamics; D013552:Swine