Argentines study multifactoral pig diseases

Date of publication : 9/9/2009
Source : Revista Veterinaria Argentina;

The porcine Circovirus type 2 (PCV2) is considered an important emerging pathogen in swine production.

It has been associated to different syndromes and porcine diseases like the Porcine Dermatitis and Nephropathy Syndrome (PDNS) and the Post weaning Multisystemic Wasting Syndrome (PMWS).

There have been found other infectious agents associated to PCV2, like the Aujeszky's disease Virus (ADV), Porcine Parvovirus (PPV), Porcine Reproductive Respiratory Syndrome Virus (PRRSV) and Actinobacillus pleuropneumoniae (App).

The interaction of the PCV2 in the pathogenesis of these diseases has not been determined and information about the serological status for PCV2 in Argentina was not found.

The aim of this study was to perform a histopathological examination of the lesions compatible with PCV2 syndromes from slaughtering animals.

The presence of antibodies against PCV2, ADV, PPV, App and Brucella in 92 sera samples were determined from pigs of the same establishment by the ELISA test, plate agglutination test (BPA) and tube agglutination test (SAT and 2-ME).

The anatomical and histological lesions were compatible with PDNS diagnosis. The scientists have found 88% of animals with an anti- PCV2 antibody profile that suggests a not active infection and 2% of animals with an active infection profile.

Regarding ADV and Brucella, they could not determine a relationship between these and PCV2.

The high seroprevalence found in these animals for App, as it was found for PCV2, suggests a probable association between these two diseases and additional studies would be required to determine it.

Study: Cátedra de Enfermedades Infecciosas. Facultad de Ciencias Veterinarias. Universidad de Buenos Aires. Av. Chorroarín 280. (C1427CWO). Ciudad de Buenos Aires. Argentina.

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