Table 1 Information about the different pig farms assessed in the study (− negative, + positive)
Farms | Anses-SPF pigletsa | A | B | B | C | C | D | E |
|---|---|---|---|---|---|---|---|---|
Age of selected pigs (days) | 0 | 150 | 84 | 105 | 91 | 105 | 160 | 150 |
Number of animals | 5 | 10 | 15 | 12 | 10 | 8 | 15 | 8 |
Respiratory symptoms identified in the farm | No | Yes | Yes | Yes | ± | ± | No | Yes |
Respiratory symptoms observed on the batch (Post-weaning or fattening period) | ||||||||
Cough | No | Yes | Yes | Yes | Yes | Yes | No | Yes |
Dyspnoea | No | Yes | Yes | Yes | No | No | No | Yes |
Sneezing | No | Yes | Yes | Yes | Yes | Yes | No | Yes |
PRRSV in the farm | No | No | No | No | No | No | No | Yes |
Mycoplasma hyopneumoniae in the farm | No | Vaccinated | Vaccinated | Vaccinated | Vaccinated | Vaccinated | No | Vaccinated |
Influenza virus isolation in post-weaning | No | H1N2 April 2015 | ND | ND | No | ND | ||
Influenza status of the batch | – | + | + | + | ND | ND | – | ND |
Actinobacillus pleuropneumoniae | – | No specific lesions | No specific lesions | No specific lesions | No specific lesions | No specific lesions | Free for all serotpyes | No specific lesions |
SOV serology | – | + | + | + | + | + | + | + |