In the study was evaluated the persistence of maternal antibodies levels against the Classical Swine Fever virus (CSFV) in piglets born from vaccinated sows from two farms (A and B) with different vaccination strategies against CSFV. In farm A sows were vaccinated at 90 days of gestation and in farm B at 18 - 21 days postpartum. Serum samples were collected from piglets of both farms, at first (n=15), third (n=15), fifth (n=15) and seventh (n=15) weeks of age, and from 15 sows from each farm A for detection of antibodies against CSFV by the indirect ELISA test. All piglets had maternal antibodies against CSFV at first week of age, persisting in most of them to the seventh week of age. Significant differences between farms were found (p<0.05) on levels of maternal antibodies in piglets at first and third week of age. Also, higher variability on antibody levels was observed n piglets an...

In the study was evaluated the persistence of maternal antibodies levels against the Classical Swine Fever virus (CSFV) in piglets born from vaccinated sows from two farms (A and B) with different vaccination strategies against CSFV. In farm A sows were vaccinated at 90 days of gestation and in farm B at 18 - 21 days postpartum. Serum samples were collected from piglets of both farms, at first (n=15), third (n=15), fifth (n=15) and seventh (n=15) weeks of age, and from 15 sows from each farm A for detection of antibodies against CSFV by the indirect ELISA test. All piglets had maternal antibodies against CSFV at first week of age, persisting in most of them to the seventh week of age. Significant differences between farms were found (p<0.05) on levels of maternal antibodies in piglets at first and third week of age. Also, higher variability on antibody levels was observed n piglets an...

The objective of this study was to determine the seroprevalence of the Porcine Reproductive and Respiratory Syndrome Virus (VPRRS) in non-technologically managed pig herds of 23 departments of Peru. Blood samples (n=4526) were collected from male and female pigs older than four weeks of age between October 2015 and March 2016 for the detection of antibodies against the VPRRS by the indirect ELISA test. The 17.3% (95% CI: 16.3-18.5) of the pigs had antibodies against the VPRRS. The average seroprevalence of the virus was 25.7% (95% CI: 23.6-27.9) in pigs of the central region, followed by those of the northern region with 14.8% (95% CI: 12.9-16.7) and southern area of the country with 11.5% (95% CI: 10.0-13.1). The seroprevalence of the VPRRS in pigs of the department of Lima was 62.2% (95% CI: 57.7-66.6), followed by pigs from the department of Arequipa with 37.9% (95% CI: 31.1-44.6) and...

El objetivo del presente estudio fue determinar la seroprevalencia del virus del Síndrome Reproductivo y Respiratorio Porcino (VPRRS) en cerdos de crianzas no tecnificadas de 23 departamentos del Perú. Se colectaron 4526 muestras de sangre de cerdos machos y hembras mayores de cuatro semanas entre octubre de 2015 y marzo de 2016 para la detección de anticuerpos contra el VPRRS mediante la prueba de ELISA indirecta. El 17.3% (IC95%: 16.3-18.5) de los cerdos tuvieron anticuerpos contra el VPRRS. El promedio de la seroprevalencia del virus fue de 25.7% (IC95%: 23.6-27.9) en los cerdos de la zona centro, seguido por los de la zona norte con 14.8% (IC95%: 12.9-16.7) y zona sur del país con 11.5% (IC95%: 10.0-13.1). La seroprevalencia del VPRRS en los cerdos del departamento de Lima fue de 62.2% (IC95%: 57.7-66.6), seguido por cerdos del departamento de Arequipa con 37.9% (IC95%: 31.1-44.6...