Abstract
The effects of adding inulin to low- or high-fat diet on the metabolic status and nutrient digestibility in gestating sows and the neonatal traits of their offspring were examined. Sixty sows were allocated to a 2 × 2 factorial treatment design with levels of inulin (0% or 1.5%) and fat (0% or 5%) addition as the fixed factors during gestation. Inulin supplementation resulted in the following: improved serum lipid profiles, insulin resistance, and glucose tolerance, which were adversely impacted by fat addition; increased serum butyrate concentration throughout gestation and propionate concentration on day 60 of gestation when given with a high-fat diet; enhanced fecal bile acid excretion in a high-fat diet; lowered ether extract (EE) digestibility and increased calcium digestibility in the sow; and decreased BMI and carcass EE content in neonatal piglets. The beneficial effects of inulin were particularly marked when it was combined with a high-fat diet.
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