EFFECT OF PORCINE PARVOVIRUS SEROSTATUS ON THE REPRODUCTIVE-PERFORMANCE OF MATED GILTS IN AN INFECTED HERD

  • 1 January 1982
    • journal article
    • research article
    • Vol. 43  (6) , 935-937
Abstract
Gilts from 2 commercial swine operations (farm A and farm B) there were bred each week were tested for porcine parvovirus antibody. On farm A, 21.9% (weekly, 2% to 35%) of the 657 gilts tested over a 16 wk period were seronegative within 1 wk of mating. On farm B, 17.7% (weekly, 0 to 40%) of the 164 gilts tested over a 10 wk period were seronegative within 1 wk of mating. Gilts (81) from farm A which were seronegative at time of mating were retested at the end of the gestation. Of the 81 gilts, 41 had developed antibody titers. The litter size decreased by 1.3 live pigs/litter. The percentage of small litters (.ltoreq. 6 born alive) in the group that seroconverted was 36.6% compared with 10% in the gilts that remained seronegative throughout gestation.

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