Novel Feed Including Olive Oil Mill Wastewater Bioactive Compounds Enhanced the Redox Status of Lambs

The aim of the present study was to investigate the antioxidant effects of a feed supplemented with polyphenolic additives from olive mill wastewater (OMW) on lambs. Lambs received breast milk until the postnatal period, and then they were divided into two groups and received control and OMW feed for 55 days. Redox biomarkers were measured in blood and tissues at days 15, 42 and 70 after feeding. Feed supplemented with OMW reduced thiobarbituric acid reactive species and protein carbonyls and increased total antioxidant capacity, glutathione and catalase activity in both blood and tissues. The administration of OMW-containing feed reinforced the antioxidant defense of lambs, which may improve their wellbeing and productivity. Additionally, this exploitation of OMW may solve problems of environmental pollution in areas with olive oil industries.