Fig. 1

Mummified fetuses and stillborn piglets were submitted for post mortem examination. Two of the litters (a and b) were recovered by the farmer in the farrowing pens where gilts showing signs of imminent farrowing (nest building activity and mammary development) farrowed at a delayed stage (> 118 days of gestation). One of the litters (c) was recovered after the gilt was slaughtered at the abattoir. The uterus with contents was delivered to NMBU for sampling