Distribution of antibodies against porcine circovirus type-2 (PCV2) in single site and multi-site farrow-to-finish farms in Brazil |
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| Authors: | Priscilla F. Gerber, Grazielle C.F. Galinari, Marcos X. Silva, F bia S. Campos, Adrienny C.T. Reis,Z lia I.P. Lobato |
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| Affiliation: | aLaboratório de Pesquisa em Virologia Animal, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Minas Gerais, Minas Gerais, Brazil;bGenética e Melhoramento, Departamento de Zootecnia, Universidade Federal de Minas Gerais, Minas Gerais, Brazil;cIPEVE, Instituto de Pesquisas Veterinárias Especializadas, Belo Horizonte, Minas Gerais, Brazil |
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| Abstract: | A comparative serologic study was performed in seven single site (SS) farrow-to-finish farms and four multi-site (MS) farrow-to-finish farms, with or without post-weaning multisystemic wasting syndrome (PMWS). In each farm, 30 blood samples were collected for each category of the production cycle: sows, farrowing crate, nursery, grower pigs, and finishing pigs. Sera were evaluated for the presence of antibodies to porcine circovirus type-2 (PCV2) via immunoperoxidase monolayer assay. Serologic profiles for PCV2 were different between SS and MS farms. Seroconversion following the decline in maternal antibodies occurred at a later stage on SS farms (grower pigs) than MS farms (nursery pigs). MS farms tended to have lower antibody titers than SS farms in the categories of sow, piglet, and nursery, while higher antibody titers were found in grower pigs. Characterization of serologic profiles for different farms may provide important information for the adoption of vaccination programs. |
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| Keywords: | Pig Epidemiology Serology Immunoperoxidase monolayer assay Porcine circovirus type-2 Post-weaning multisystemic wasting syndrome |
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