Table 5.
Salmonella prevalence in finishing steers
| Treatmenta | ||||
|---|---|---|---|---|
| Item | CON | CLO | SEM | P-value |
| Pens, N | 12 | 12 | – | – |
| Steers, N | 60 | 60 | – | – |
| Fecal Salmonella prevalence,b % | ||||
| Day 1 (6 d) | ND | ND | – | – |
| Day 28 (34 d) | ND | ND | – | – |
| Day 56 (62 d) | ND | ND | – | – |
| Day 112 (118 d) | 25.0 | 8.3 | 10.95 | 0.17 |
| Day 140 (146 d) | 0.0 | 8.3 | 5.89 | 0.34 |
| Subiliac lymph node Salmonella prevalence,b % | – | – | ||
| Days of harvest (147 d) | ND | ND | – | – |
ND, none detected.
aFed no probiotic (CON) or fed 0.5 g/steer/d of B. subtilis PB6 (CLOSTAT 500, Kemin Industries, Des Moines, IA; CLO).
bDays of study (days following arrival to the feedlot).