Reduced farrowing rates due to late pregnancy loss (LPL) is a manifestation of seasonal
infertility in pigs. This study was undertaken to determine sow-and gilt-specific risk factors …

All gilts and sows in production from which the detailed production information was available
in a 160-sow unit were included to the study. In winter–spring, there were complete data …

Contents A retrospective study, based on 60 990 farrowing records from 35 commercial
herds, was performed to determine the incidence of early parturition (< 114d) and to …

Background Our objectives were to characterize sow life and herd-life performance and
examine two-way interactions between age at first-mating (AFM) and either herd size or herd …

Contents To achieve optimal reproductive performance in pig herds, sows need to become
pregnant as soon as possible after weaning. The aim of this study was to investigate herd …

Stillbirth in swine ranges from 2 to 9%, resulting in a significant loss of piglets. Previous
studies clearly indicate a relationship between prolonged birth intervals and stillbirth, but …

Forecasting gestation length (GL) in sows enables producers to be prepared to provide
assistance at farrowing, or for timely treatment to induce parturition. The objectives of the …

The aim of this study was to identify risk factors for stillborn piglets at sow level in commercial
pig herds in northern Belgium. In total, 545 sows of 22 pig herds were included in the study …

In modern swine production failure of sows to become pregnant within the expected time
after weaning results in major economic loss and culling of sows. The objective of this study …

Data were from 3119 farrowings in three large swine confinement units in eastern North
Carolina. Litters were weaned during April through October. Interval to first estrus after …