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Number of salmonella positive samples from environmental weekly surveillance of the production line - after heat treatment of feed mills of A and B using largely the same feed ingredients
| Year/feed producing company | Number of salmonella positive samples collected after heat treatment | Total | |||||
|---|---|---|---|---|---|---|---|
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | ||
| A | 7 | 1 | 2 | 7 | 0 | 1 | 18 |
| B | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
