Table 3.
Results of diagnostic testing throughout experiment (days 0 to 41)
| Day1 | Pathogen2 | Result3 | Testing method4 |
|---|---|---|---|
| 3 | Salmonella (S. infantitis) | Positive | Liver culture |
| 3 | Actinobacillus suis | Positive | Lung culture |
| 3 | Streptococcus suis | Positive | Lung culture |
| 11 | Mycoplasma hyorhinis | Positive | Fibrin swab PCR |
| 26 | PRRSV | Positive | Oral fluid PCR |
| 26 | IAV | Negative | Oral fluid PCR |
| 26 | Streptococcus suis | Positive | Lung culture |
| 26 | Haemophilus parasuis | Positive | Lung culture |
| 40 | PEDV | Negative | Oral fluid PCR and serology |
| 40 | PDCoV | Negative | Oral fluid PCR |
| 40 | Mycoplasma hyopneumoniae | Negative | Oral fluid PCR and serology |
1Day of sample collection.
2PRRSV = porcine reproductive and respiratory syndrome virus, IAV = influenza A virus, PEDV = porcine epidemic diarrhea virus, PDCoV = porcine deltacoronovirus.
3Samples were collected at necropsy from pigs that died as determined necessary by the diagnostic veterinarian. On day 26, oral fluid samples from four symptomatic pens were collected and tested. On day 40, oral fluid and serum samples from eight pens, equidistantly spaced throughout the barn, were collected and tested. If a sample was positive for a specific pathogen, the whole barn was considered to have exposure to that pathogen.
4PCR = polymerase chain reaction.