Naringin and vitamin E influence the oxidative stability and lipid profile of plasma in lambs fed fish oil

5 páginas, 3 tablas.Thirty two Merino lambs (15 weeks old) fed barley straw and fish oil enriched concentrate were used to assess the effect of vitamin E(6 g kg(-1) DM) and naringin (1.5-3 g kg(-1) DM) on plasma lipid peroxidation (TBARS), total antioxidant status (TAS), immune response, plasma cholesterol, and triglycerides. After 21 days feeding the experimental diets, lambs were subjected to a 4 h transportation stress period and then held 4 more hours without feed. TBARS values before stress were lower for animals consuming vitamine E and naringin when compared to control lambs (P < 0.05). However, after stress all groups presented similar levels of TBARS. TAS decreased (P < 0.05) in all groups in response to stress with values recovering (P < 0.05) to pre-stress values following 4 h of rest. A rise (P < 0.05) in serum concentrations of triacylglycerol following 21 d of fish oil supplementation was dampened in lambs consuming vitamin E or naringin. Both pre-stress TBARS and triacylglycerol-reducing effects of naringin added to fish oil enriched concentrate for fattening lambs are reported.This investigation was funded by the CSIC ‘Intramural’ Project 200840I116 and supported by Junta de Castilla y León (GR158). Raúl Bodas and Nuria Prieto have a JAE-Doc contract from the CSIC under the programme ‘Junta para la Ampliación de Estudios’.Peer reviewe