Abstract
Frequently samples of carcass rinses and chiller water must be sent to the laboratory for analysis. It is important to know how to maximize recovery of salmonellae. Seventy processed broiler carcasses were individually inoculated with 50 cells of a marker strain of Salmonella typhimurium. Each carcass was rinsed with 100 mL sterile water and the resulting rinse fluid was either analyzed immediately (control), stored at-23°C, or packed in crushed ice for one or seven days. Also, fifty samples of commercial poultry chiller water (90 mL each) were inoculated with 50 cells of the marker organism and analyzed immediately (control), stored frozen, or packed in crushed ice. S. typhimurium was recovered from 30/30 control carcass rinses, 10/10 day one frozen and ice-packed samples, and 8/10 day seven frozen and ice-packed samples. S. typhimurium was recovered from all controls (10/10) and from all ice-packed samples on day one (10/10) and day seven (10/10), but was recovered from only 1/10 on day one and 5/10 on day seven of the frozen chiller water samples. Ice packing maximizes the recovery of salmonellae from chiller water and carcass.
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