Swine Bibliography Centre
|
Support that keeps you updated for FREE  |
Bulletin No. 31 - Fall 2008
VirologyPMWS-PCV2-PCVD-PDNS
CALSAMIGLIA M, FRAILE L, ESPINAL A, CUXART, SEMINATI C, MARTIN M, MATEU E, DOMINGO M, SEGALES J
Sow porcine circovirus type 2 (PCV2) status effect in litter mortality in postweaning multisystemic wasting syndrome (PMWS)
Research in Veterinary Science, 2007, Volume 82, 299-304
The purpose of this study was to investigate the litter effect on mortality in PMWS-affected farms and to define it according to sow parity, sow PCV2 infectious status and sow PCV2 antibody titers. A total of 105 sows (15 sows per each of the 7 herds selected for the study) were used in this study. All sows had farrowed the same week. Sow parity was recorded and blood samples were collected at farrowing. These samples were tested for antibodies to PCV2 by using an immunoperoxidase monolayer assay (IPMA). All piglets were followed up to 7 months and then necropsied for pathological examination. One hundred and four piglets died out of 420; 60% were necropsied and 63% of them were found PMWS affected. Sow viremia and sow low anti-PCV2 antibody titers were significantly related with PMWS mortality of pigs. The results confirmed that the sow PCV2 infectious status had a significant impact on piglet mortality in farms affected with PMWS that may explain the previously found "litter effect".
