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Bulletin No. 30 - Summer 2008
VirologyPMWS-PCV2-PCVD-PDNS
DORR PM, BAKER RB, ALMOND GW, WAYNE SR, GEBREYES WA
Epidemiologic assessment of porcine circovirus type 2 coinfection with other pathogens in swine.
Journal of the American Veterinary Medical Association, 2007, Volume 230, Nº2, 244-250
This study was conducted in various types of production system, i.e. farrow-to-finish (one-site), farrow-to-feeder (two-site) and farrow-to-wean (three-site) systems, in order to determine the impact of PCV2 infection with respect to the production phase and type of management system, and to identify potential coinfections in PCV2-positive pigs. Pigs of various age groups (3 to 24 week-old pigs) were euthanized, necropsied, identified as PCV2-infected or non-infected by PCR, and serologically investigated for antibodies to swine influenza virus (SIV), porcine reproductive and respiratory syndrome virus (PRRSV) and M. hyopneumoniae (M. hyo). Regarding coinfections, PCV2-infected pigs resulted significantly more subjected to SIV, PRRSV and M. hyo infections. Moreover, a greater impact of such coinfections was identified in PCV2-infected pigs reared in three-site production systems, in particular during the nursery phase.
