Associations between PRRS farm status and productive parameters in Spanish sow farms

摘要

PRRS is an endemic swine disease causing significant productive and economic loses in pig farms. Spain is one of the main global pig producers. However, data on the impact of PRRS virus (PRRSV) infection on Spanish, or other European pig farms are still scarce. Likewise, there is a lack of systematic and periodic monitoring of PRRSV in Europe, which limits the knowledge on PRRS incidence or prevalence over time. The aim of this study was to establish, for the first time, a systematic monitoring system for PRRS in Spanish sow farms, to classify farms according the PRRS status using terminology currently adopted in the US swine industry.1 Furthermore, we investigated associations between PRRS status of breeding herds, and selected production parameters, allowing the characterization, for the first time, of production and economic impact of PRRSV infection under Spanish field conditions.