TABLE 5.
E. coli counts and detection of B. thermacidophilum subsp. porcinum in manure and in water impacted by human activity and contaminated with manure
| Type of sample | Origin of contamination | Mean E. coli count (CFU/100 ml) ± SD | No. of samples positive for target bacteria/total |
|---|---|---|---|
| Raw manure (pig) | 4.0 × 106 ± 4.2 × 106 | 17/17 | |
| Treated manure (pig) | 5.1 × 104 ± 3.3 × 104 | 10/10 | |
| Lagoon with retention time of 5 days (L1) (pig) | Treated liquid manure | 4.5 × 106 ± 4.1 × 105 | 1/1 |
| Lagoon with retention time of 9 mo (L2) (pig) | Treated liquid manure | Not detected | 0/1 |
| Runoff water (R1-R3) | Pig manure spread on field | 9.7 × 10 ± 3.3 × 103 | 3/3 |
| Runoff water (R4-R6) | Bovine manure spread on field | 7.5 × 103 ± 8 × 102 | 0/3 |
| Raw wastewater | Urban effluent (mainly human) | 1.8 × 106 ± 1.7 × 106 | 0/5 |
| Treated wastewater | Urban effluent (mainly human) | 3.3 × 103 ± 4.3 × 103 | 0/10 |