The aim of this study was to evaluate the effect of the dietary inclusion of Cistus ladanifer L. and vegetable oils on intramuscular fat composition, muscle antioxidant status and lipid oxidative stability, and explore the mechanism by which dietary Cistus ladanifer limits the lipid oxidation. Lambs were assigned 9 diets, corresponding to 3 levels of Cistus ladanifer (50, 100 and 200 g/kg DM) and 3 levels of oil (0, 40 and 80 g/kg DM). Oil supplementation increased highly peroxidizable fatty acid content and the peroxidizability index (P < .05). Muscle phenolic content, reducing ability and radical scavenging ability were not affected by Cistus ladanifer (P > .05). The highest level of Cistus ladanifer enhanced muscle resistance to lipid oxidation (P = .006) and increased α-tocopherol content (P = .005), reducing meat lipid oxidation over 7 days of storage (P < .001). Results showed that Cistus ladanifer has a protective effect against lipid oxidation through increasing α-tocopherol concentration in the muscle.

这项研究的目的是评估日粮中的Cistus ladanifer L.和植物油对肌内脂肪组成，肌肉抗氧化剂状态和脂质氧化稳定性的影响，并探讨日粮Cistus ladanifer限制脂质氧化的机制。羔羊被分配了9种日粮，分别对应3个水平的Cistus ladanifer（50、100和200 g / kg DM）和3个水平的油（0、40和80 g / kg DM）。补充油增加了高可氧化脂肪酸含量和过氧化指数（P  <.05）。肌肉水酚含量，还原能力和自由基清除能力不受Cistus ladanifer（P > .05）。最高的Cistus ladanifer增强了肌肉对脂质氧化的抵抗力（P  = .006）和增加的α-生育酚含量（P  = .005），在储存7天后减少了肉类脂质的氧化（P  <.001）。结果表明，Cistus ladanifer通过增加肌肉中的α-生育酚浓度具有抗脂质氧化的保护作用。