Evaluation of pig pneumonia at slaughter using polymerase chain reaction and histopathology in Argentina

CAPPUCCIO, JA; DIBARBORA M; BESSONE, F.; OLIVERA, V.; LOZADA, I; ALUSTIZA, F; QUIROGA, MA; PEREZ, E; ZIELINSKI, G; PERFUMO, CJ; PEREDA, A; PEREZ, DR

JOURNAL OF SWINE HEALTH AND PRODUCTION

AMER ASSOC SWINE VETERINARIANS

Año: 2018

1537-209X

I pig production systems, slaughter checks are routinely used to estimate prevalence and severity of respiratory disease as well as for detecting subclinical disease. porcine respiratory disease complex (PRDC) is used to describe polymicrobial respiratory infections that rowing and _ nishingpigs and are associated with economic losses. _ e etiology of PRDC varies amongcountries, regions, and farms.1-4 _ e most common pathogens reported worldwideassociated with PRDC are Actinobacillus pleuropneumoniae (Ap), in_ uenza A virus(IAV), Mycoplasma hyopneumoniae (Mh), Pasteurella multocida (Pm), porcine circovirus type 2 (PCV2), porcine reproductive and respiratory syndrome virus (PRRSV), and pseudorabies virus (PRV).1-4 In Asia, Europe, and North America the predominance of PRRSV in cases of PRDC is well documented. Argentina is free of PRRSV, whereas PRV is under an eradication plan with most con_ nement farms free of infection. Under this scenario, the agents that are most frequently associated with PRDC in Argentina remain unknown. _ e aim of this study was to investigate the relationship between respiratory pathogens detectedby polymerase chain reaction (PCR) and histopathological lung lesions in lungs with pneumonia lesions obtained from PRRSV and PRV-free pigs at slaughter.