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From lab to field
Enric Marco tells us that of late, it is relatively common to see fattening pigs in their final phase exhibiting respiratory symptoms that respond poorly to antibiotic treatments. In these cases, we usually think of PRRS virus; however raising the possibility of a mixed viral infection is less frequent...
PRRSV favours the appearance of secondary infections like the one caused by S. suis due to the impairment of the alveolar macrophages cleaning functions.
Surrounding holdings with high hedge fences reduces the risk of airborne transmission.
PRRSV does not favour infection by H. parasuis by reducing the population of alveolar macrophages, but by reducing their ability to inactivate the bacteria.
App control is an essential link to control pleuroneumonia in PRRS-positive herds.
PRRS virus infection can be considered common in areas of high pig density and, in such cases, the idea that biosecurity and can do little is widespread. However, proper biosecurity measures must be implemented in order to prevent the introduction of new strains.