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Bulletin No. 19 - Fall 2004
18th IPVS Congress, Hamburg, Germany, 2004PMWS-PCV2-PCVD-PDNS
CALSAMIGLIA M, SEGALES J, FRAILE L, ESPINAL A, SEMINATI C, MARTIN M, MATEU E, DOMINGO M
Sow impact on litter mortality in a swine integration system experiencing postweaning multisystemic wasting syndrome (PMWS)
Proceedings of the 18th IPVS Congress, Hamburg, Germany, 2004 - Volume 1:78
The litter effect in sows from a PMWS-affected swine integration system was assessed with regards to PCV2 viremia, PCV2 antibody level and parity of sows. Viremic sows had a significantly higher number of dead piglets per litter when compared to non-viremic sows and so did sows with low or no antibodies against PCV2 compared to sows with high levels of antibodies against PCV2. Sow parity had no effect on piglet mortality. These results show that PCV2 infectious and humoral immune status of sows at farrowing clearly contribute to the litter effect. Therefore, a reduction of PMWS impact on piglet mortality may be achieved by increasing maternal immunity and reducing sow viremia at farrowing.
