SURVEY OF PORCINE PARVOVIRUS INFECTION IN SWINE FETUSES AND THEIR DAMS AT A MINNESOTA ABATTOIR

  • 1 January 1981
    • journal article
    • research article
    • Vol. 42  (5) , 865-867
Abstract
Reproductive tracts were recovered from 209 sow and 32 gilt carcasses at slaughter; animals were pregnant not less than 27 days. Of 241 litters examined, 28 (11.6%) contained 1 or more porcine parvovirus (PPV)-infected fetuses, as determined by immunofluorescent microscopy. The frequencies in sow and gilt litters were 12.0% and 9.4%, respectively. The PPV antigen was detected in 219 of 334 (65.6%) dead or mummified fetuses and in 12 of 2172 (0.5%) live fetuses examined. The 18 litters which contained only dead or mummified fetuses were infected with PPV. As the percentage of litter mummification increased, the likelihood of finding PPV increased. The PPV antibody was detected in ovarian follicular fluids of 94.3% of the sows and 78.1% of the gilts. These findings indicate that PPV is highly associated with fetal mummification and that some pregnant gilts and sows are susceptible to infection.