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
leading to LPL during the seasonal infertility period (January to April) in Australia. Age at first
service was considered to be a major gilt-specific risk factor, whereas sow-specific factors
considered included parity, prior wean-to-service interval, prior lactation length, and number
of piglets weaned in the lactation period immediately preceding the mating/pregnancy event …