TABLE 2.
Overall and treatment level Salmonella prevalence distribution by sample day (feces only) and sample type
| Treatment | % prevalence (no. of positive samples/total no.) |
|||||||
|---|---|---|---|---|---|---|---|---|
| Fecal |
Lymph nodea | Hide | ||||||
| Day 0 | Day 7 | Day 14 | Day 28 | Day 56 | Terminal | |||
| Total | 43.6 (58/133) | 20.1 (27/134) | 20.1 (27/134) | 41 (55/134) | 57.5 (76/132) | 80.3 (106/132) | 84.2 (96/114) | 84.8 (112/132) |
| Ceftiofur | 32.5 (13/40) | 15 (6/40) | 17.5 (7/40) | 35 (14/40) | 66.6 (26/39) | 87.1 (34/39) | 90.6 (29/32) | 92.3 (36/39) |
| Control | 54.7 (29/53) | 16.6 (9/54) | 22.2 (12/54) | 42.5 (23/54) | 42.5 (23/54) | 66.6 (36/54) | 77.0 (37/48) | 77.7 (42/54) |
| Tulathromycin | 40 (16/40) | 30 (12/40) | 20 (8/40) | 45 (18/40) | 69.2 (27/39) | 92.3 (36/39) | 88.2 (30/34) | 87.1 (34/39) |
a
Animal level frequencies are presented for the lymph node data. The overall lymph node prevalence was 75.4% (169/224).