Serologic evidence of multiple pathogens circulation among household pigs from Iași County

Abstract

Abstract Porcine reproductive and respiratory syndrome virus (PRRSV), Aujeszky's disease virus (ADV) and Mycoplasma hyopneumoniae are among the principal agents of respiratory diseases of pigs. PRRS can manifest as lowered farrowing rates, a marked increase in abortions, stillborn, mummified and weak live born piglets and deaths. However, in some herds, infection is asymptomatic. Aujeszky’s disease is a contagious viral disease caused by a herpesvirus called Pseudorabies virus and After exposure to the airborne virus, it can remain latent in the body, ready for subsequent reactivation at times of stress or immunosuppression. Mycoplasma hyopneumoniae occurs worldwide and causes a chronic infectious pneumonia of pigs that is characterized by a persistent dry cough, decreased growth rate, and sporadic respiratory distress. In this study we have made a serological investigation on 104 samples collected from households in six localities from Iasi County. The investigation was performed in order to assess the seroprevalence of specific IgG anti PRRS virus and anti Aujeszky's disease virus(ADV) glycoprotein E. The positive samples for ADV and PRRSV were tested for the detection of Mycoplasma hyopneumoniae antibodies. The overall seroprevalence was 4,8% for PRRS, respectively 15,38 % for ADV. Three samples were identified as positive for both pathogens. None of the seropositive animals for PRRS or ADV seroconverted for M. hyopneumoniae. This study demonstrated the circulation of ADV and PRRSV in backyard pigs from Iași County.