Segregated Early Wean
The offspring used in this program are derived from the Segregated Early Weaning program (SEW) schedule at Midwest Research Swine. Briefly, this procedure consists of farrowing several sows at once, generally five to twelve, in a segregated farrowing building. Piglets are allowed to stay with the sow for 10-17 days, after which time all piglets born from a given cohort of sows are weaned and transferred to a separate nursery. Each cohort of piglets remains together in the nursery until they are 8 weeks old, at which point they are transferred again as a group to the finishing pens, also part of an indoor facility which further improves bio security. Farrowing rooms, nurseries and finishing rooms are disinfected between each cohort.