In the present study, ovarian cysts were found in 47 sows (2.36%), out of which 17 were
from farm A (2.31%) and 30 from farm B (2.39%). The described incidence is based on
the examination of 1990 sows evaluated either at first breeding estrus (gilts) or in the first
estrus after weaning (multiparous sows), therefore, in animals without any previous record
of individual reproductive problems. Despite these differences in weaning to estrus interval,
parity and lactation length found in farms A and B, cyst incidence was similar in both. Due
to the highly acceptable reproductive performance at both farms, the incidence of ovarian
cysts was not great, maybe in farms with a lesser reproductive performance the incidence
of ovarian cysts would have been greater.