Poult. Sci.
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Poultry Science, Vol 81, Issue 1, 49-55
Copyright © 2002 by Poultry Science Association

Articles

Reducing airborne pathogens, dust and Salmonella transmission in experimental hatching cabinets using an electrostatic space charge system

BW Mitchell, RJ Buhr, ME Berrang, JS Bailey, and NA Cox

Southeast Poultry Research Laboratory, USDA-Agricultural Research Service, Athens, Georgia 30605, USA. bmitchell@seprl.usda.gov

Electrostatic charging of particles in enclosed spaces has been shown to be an effective means of reducing airborne dust. Dust generated during the hatching process has been strongly implicated in Salmonella transmission, which complicates the cleaning and disinfecting processes for hatchers. Following two preliminary trials in which dust reduction was measured, four trials were conducted to evaluate the effectiveness of an electrostatic space charge system (ESCS) on the levels of total aerobic bacteria (TPC), enterobacteriaceae (ENT), and Salmonella within an experimental hatching cabinet. The ESCS was placed in a hatching cabinet that was approximately 50% full of 18-d-old broiler hatching eggs. The ESCS operated continuously to generate a strong negative electrostatic charge throughout the cabinet through hatching, and dust was collected in grounded trays containing water and a degreaser. An adjacent hatching cabinet served as an untreated control. Air samples from hatchers were collected daily, and sample chicks from each hatcher were grown out to 7 d of age for cecal analysis in three of the trials. The ESCS significantly (P < 0.05) reduced TPC and ENT by 85 to 93%. Dust concentration was significantly reduced (P < 0.0001) during the preliminary trials with an average reduction of 93.6%. The number of Salmonella per gram of cecal contents in birds grown to 7 d of age was significantly (P < 0.001) reduced by an average log10 3.4 cfu/g. This ionization technology is relatively inexpensive and could be used to reduce airborne bacteria and dust within the hatching cabinet.


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 J. Appl. Poult. Res.Home page
C. W. Ritz, B. W. Mitchell, B. D. Fairchild, M. Czarick III, and J. W. Worley
Improving In-House Air Quality in Broiler Production Facilities Using an Electrostatic Space Charge System
J. Appl. Poult. Res., January 1, 2006; 15(2): 333 - 340.
[Abstract] [Full Text] [PDF]


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Copyright © 2002 by the Poultry Science Association.