Survival of Salmonella in Dry Food and Feed.

The survival of Salmonella Montevideo and Salmonella heidelberg in dry milk, cocoa powder, poultry feed, and meat and bone meal was studied at three water activities (a) in the range of 0.4 to 0.75.

Recovery of Salmonella from Artificially Contaminated Poultry Feeds in Non-Selective and Selective Broth Media.

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.