Table 2.
Concentration of Salmonella in feces by treatment group and study day in commercial beef calves supplemented with Lactobacillus animalis and Propionibacterium freudenreichii-based feed additives to reduce Salmonella.
| Concentration of Salmonella in Feces (CFU/g) |
Presence of at Least One CFU of Bacteria in Feces | |||
|---|---|---|---|---|
| n | Mean | Pos (≥1 CFU/g) | Neg (0 CFU/g) | |
| Treatment | ||||
| Probiotics | 70 | 92,227.9 | 17 | 53 |
| Control | 70 | 296,317.1 | 43 | 27 |
| Study Day | ||||
| 0 | 20 | 0.0 | 0 | 20 |
| 3 | 20 | 1,100,675.0 | 18 | 2 |
| 5 | 20 | 188,200.0 | 17 | 3 |
| 7 | 20 | 23,847.5 | 12 | 8 |
| 9 | 20 | 47,105.0 | 10 | 10 |
| 14 | 20 | 80.0 | 3 | 17 |
| 28 | 20 | 0.0 | 0 | 20 |
n = number of observations.