Table 4 Summary of results of PCR (+)/VI (−) feed ingredients tested by swine bioassay
Ingredient | Samples pooled for inoculum | Ct of inoculum | Clinical signs/rectal swabs | PCR testing of small intestine |
|---|---|---|---|---|
Corn | 7, 14, 30 DPI | 23.44 | Negative | Negative |
VTM-sow | 7, 14, 30 DPI | 24.82 | Negative | Negative |
VTM-nursery | 7, 14, 30 DPI | 26.39 | Negative | Negative |
VTM-finisher | 7, 14, 30 DPI | 26.38 | Negative | Negative |
Choice white grease | 14, 30 DPI | 23.21 | Positive | Positive |
Hydrolyzed intestinal mucosa | 7, 14, 30 DPI | 24.38 | Negative | Negative |
Soy oil | 7, 14, 30 DPI | 34.15 | Negative | Negative |
Threonine | 30 DPI | 28.27 | Negative | Negative |
Limestone | 14, 30 DPI | 28.07 | Negative | Negative |
Plasma | 7, 14, 30 DPI | 22.95 | Negative | Negative |
Purified plasma | 7, 14, 30 DPI | 23.46 | Negative | Negative |
Choline chloride | 7, 14, 30 DPI | 18.01 | Positive | Positive |
LA -treated | 7, 14, 30 DPI | 31.06 | Negative | Negative |
(−) Control | saline | >38 | Negative | Negative |