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Bulletin No. 24 - Spring 2006
VirologyPMWS-PCV2-PCVD-PDNS
ROSE N, PENHARD A, EVENO E, BLANCHARD P, OGER A, GRASLAND B, JOLLY JP, JESTIN A, MADEC F
A cohort study on time to PCV2 seroconversion in three post-weaning multisystemic wasting syndrome (PMWS) affected farms.
International Conference on Animal Circoviruses and Associated Diseases, European Society for Veterinary Virology, 2005
The risk of developing a postweaning multisystemic wasting syndrom (PWMS) seems to be higher when porcine circovirus type 2 (PCV2) seroconversion occurs early in the piglet life. This study aimed at identifying the risk factors leading to PCV2 seroconversion in PMWS affected farms. Blood samples were taken from the selected sows at one month of pregnancy and after farrowing and tested for PCV2. The piglets were weighted, clinical signs were observed and blood samples were taken and tested for PCV2, porcine parvovirus and porcine reproductive and respiratory syndrome (PRRS) virus. Data regarding housing conditions were also recorded. The results showed that early PCV2 seroconversion was due to a lack of passive immunity and that early weaning could also increase the risk of early seroconversion.
