Effects of oil quality and antioxidant supplementation on sow performance, milk composition and oxidative status in serum and placenta

摘要

BackgroundThe aim of this study was to determine the effects of oil quality and antioxidant (AOX) supplementation on sow performance, milk composition and oxidative status. MethodsA total of 80 PIC (PIC breeding, 3?~?5 parities) sows with similar body condition were allocated to four groups ( n =?20), receiving diets including fresh corn oil, oxidized corn oil, fresh corn oil plus AOX and oxidized corn oil plus AOX, respectively, from d 85 of gestation to d 21 of lactation. AOX was provided at 200?mg/kg diet and mixed with corn oil prior to dietary formulation. ResultsThe results showed that sows fed oxidized corn oil had significantly lower feed intake ( P P P P =?0.08) in sows across lactation relative to fresh oil. Intriguingly, the placental oxidative status was affected by oil quality and AOX supplementation, as indicated by the markedly increased placental gene expression of GPX and SOD ( P ConclusionIn conclusion, feeding oxidized corn oil did not markedly affect reproductive performance in addition to decreasing feed intake during lactation. Milk composition and systemic oxidative status were deteriorated in sows fed oxidized corn oil and partially improved by AOX supplementation. Moreover, placental antioxidant system of sows may have an adaptive response to oxidative stress, but normalized by AOX.