Author/Authors :
Cortey، نويسنده , , M. and Pileri، نويسنده , , E. and Sibila، نويسنده , , M. and Pujols، نويسنده , , J. C. Balasch، نويسنده , , M. and Plana، نويسنده , , J. and Segalés، نويسنده , , J.، نويسنده ,
Abstract :
Changes in porcine circovirus type 2 (PCV-2) genotypes were evaluated before, during and after outbreaks of post-weaning multisystemic wasting syndrome (PMWS) in (1) a retrospective study using pig sera collected in Spain from 1985 to 2008 and (2) a longitudinal study using pig sera collected from two farms in Spain over periods of 7 and 14 years. In both studies, there was a rapid genotypic shift from PCV-2a to PCV-2b that was related to the peak of PMWS epizootics in Spain and the appearance of PMWS on the two farms studied longitudinally.
Keywords :
Porcine circovirus type 2 , Genetic shift , pigs , Spain , Post-weaning multisystemic wasting syndrome
