From: Recovery of Salmonella isolated from eggs and the commercial layer farms
Level | Origins | Na | Salmonella serotypes | Prevalenceb | |||||
---|---|---|---|---|---|---|---|---|---|
S. Derby | S. Braenderup | S. Enteritidis | S. Jerusalem | S. Bovismorbificans | Un-identified | ||||
Old layer farm | |||||||||
 Farm | Cage | 6 | 5 |  |  |  |  |  | 33.3% (18/54) |
Egg (from cage) | 42 | 3 | Â | Â | 3 | Â | 1 | ||
Egg nest | 6 | 6 | Â | Â | Â | Â | Â | ||
New layer farm | |||||||||
 Farm | Cage | 6 | 6 |  |  |  |  |  | 51.1% (23/45) |
Egg belt | 6 | 6 | Â | Â | Â | Â | Â | ||
Egg (from belt) | 18 | 1 | 3 | Â | 1 | 1 | 1 | ||
Egg collection conveyer | 3 | 1 | Â | Â | 1 | Â | Â | ||
Egg (from conveyer) | 12 | Â | Â | Â | 1 | 1 | 1 | ||
 Processing | Washing room | 12 | 1 |  |  | 1 |  |  | 27.3% (6/22) |
Irradiation room (UV) | 1 | Â | Â | Â | 1 | Â | Â | ||
Package room | 9 | 3 | Â | Â | Â | Â | Â | ||
 Storage | Storage room | 12 |  |  |  | 3 |  | 1 | 33.3% (4/12) |
 Retail | Retail eggs | 12 | 1 | 1 |  | 1 |  | 3 | 50.0% (6/12) |