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Measuring Air-Borne Microbial Contamination of Broiler Hatching Cabinets

USDA, Agricultural Research Service, Russell Research Center, P. O. Box 5677. Athens GA 30613; Phone: (706) 546-3484; FAX: (706) 546-3771

Correspondence: M. E. Berrang

This study compared the measurements of bacterial air contamination in commercial broiler hatching cabinets gathered with a surface air sampling machine to those collected using an open agar plate method. Samples were analyzed for levels of Enterobacteriaceae. Presence or absence of salmonellae was determined using a direct and an enrichment sampling procedure. The air sampler found more Enterobacteriacea (128 cells/180 L air, 2 min exposure) than the open plate system (41 cells/2 min exposure). However, the open plate enrichment system detected more salmonellae than the air sampler enrichment system (six vs. two positive cabinets).

Key Words: Air sample • comparison • hatchery • microbial • salmonellae