Stimulation of Oestrus and Ovulation in Lactating Sows
A Kansas State University study showed that sows could show oestrus when suckling just 12 hours per day and with boar access. These sows expressed lactational oestrus and their subsequent reproductive performance and litter weights were similar to sows weaned in a conventional way at 21 days, the researchers told delegates at the 2013 Kansas Swine Day.