Semen Factors Associated With Post-Breeding Sow Responses

摘要

This experiment aimed to determine the effect of sperm traits on sows returning to oestrus; a source of significant economic loss in pig production systems in which bred sows are neither gestating nor lactating and therefore not producing a litter. Return to oestrus can be caused by factors such as incorrect oestrus or pregnancy detection, seasonal infertility, age and pathogens. Here it was hypothesized that male factors also contribute to early pregnancy loss in pigs.