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Comparison of generic coliform concentrations and prevalences of E. coli O157 in cattle feeds
| Generic coliform concn (CFU/g) | Total no. of feed samples | No. of positive samples | % Positive |
|---|---|---|---|
| 101 | 131 | 25 | 19.1 |
| 102 | 76 | 17 | 22.4 |
| 103 | 117 | 16 | 13.7 |
| 104 | 117 | 9 | 7.7 |
| 105 | 53 | 6 | 11.3 |
| 106 | 8 | 1 | 12.5 |
| 107 | 2 | 1 | 50.0 |
