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Bulletin No. 17 - Winter 2003
VirologyPMWS-PCV2-PCVD-PDNS
ROSE N, LAROUR G, LE DIGUERHER G, EVENO E, JOLLY JP, BLANCHARD P, OGER A, LE DIMMA M, JESTIN A, MADEC F
Risk factors for porcine postweaning multisystemic wasting syndrome (PMWS) in 149 French farrow-to-finish herds.
Preventive Veterinary Medicine, 2003, Volume 61, 209-225
BO98412
One hundred and forty-nine French farms were investigated in order to explore the potential risk factors for PMWS. Three groups were constituted according to the PMWS status of the farms: current and typical PMWS (case), PMWS-free (control#1) and recovered from PMWS (control#2). Both control groups were compared to the case group. The impact on the odds of PMWS of co-infections, vaccination, the origin of semen and the type of housing was assessed. Two factors were found to decrease the odds of PMWS: the existence of a self-replacement scheme for gilts and the vaccination of sows against E. coli. Conversely, the odds of PMWS were increased by: co-infection with porcine parvovirus (PPV) and porcine reproductive and respiratory syndrome virus (PRRSV), the use of farm semen versus semen from insemination center, large pens in weaning and farrowing facilities, regular treatment against external parasites, housing pregnant sows in collective pens versus individual pens, the use of a common pit for several adjacent fattening rooms versus separate pits and high level of cross-fostering.
