Biosecurity is first line of defense against swine disease

Biosecurity is first line of defense against swine disease

*Dr. Chris Sievers is with the Swine Vet Center, St. Peter, Minn.

IT certainly has been an unusual summer for the swine industry, with a greater frequency of viral disease challenges caused by porcine reproductive and respiratory syndrome (PRRS) virus, influenza virus and Seneca Valley virus (SVV).

It is usually thought that the heat of summer reduces virus circulation among swine herds, so the challenges of this summ

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