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Recovery of Salmonella from Artificially Contaminated Poultry Feeds in Non-Selective and Selective Broth Media
B J Juven1, N A Cox1, J S Bailey1
1University of Georgia, Cooperative Extension Service, Extension Poultry Science Department, Athens, Georgia 30602 and United States Department of Agriculture, Agricultural Research Service, Richard B. Russell Agricultural Research Center, Athens, Georgia 30613.
Abstract:
The efficacy of four preenrichment media (lactose broth, lactose broth with Tergitol, buffered peptone and M-9) and of direct enrichment in selenite cystine and modified tetrathionate broths for recovering two Salmonella serotypes from dry poultry feed was determined. The salmonellae, artificially inoculated and stored for 7 wk in the dry feed (1.5 to 2.2 cells of salmonellae/g of feed analyzed), were recovered from significantly more samples after preenrichment with M-9 or buffered peptone than with any of the other procedures tested.
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