ABSTRACT The objectives of the present study were to quantify the deposition of carotenoids and tocopherols in the tissues of suckling lamb and to use the levels of those compounds to trace the maternal feeding. Twenty suckling lambs were raised with their dams in vegetative-stage pastures, and 19 suckling lambs were stalled indoors with dams that received hay ad libitum, until the lambs reached 10–12 kg. The lambs’ weekly intake of carotenoids and tocopherols was estimated from the milk production of the ewes and the carotenoid and tocopherol content of the milk. Samples of the subcutaneous and perirenal fat, longissimus thoracis muscle, and liver of the suckling lambs were collected at 24 h after slaughter. The pasture-raised lambs had greater intake of lutein than their indoor counterparts throughout the suckling period (p < 0.05), more retinol during the second and third weeks of the suckling period (p < 0.05), and more α-tocopherol during the first three weeks of the suckling period (p < 0.05), being similar thereafter. The pasture-raised lambs, when compared to the lambs raised indoors, had greater lutein content in the muscle and liver (p < 0.001), retinol and α-tocopherol content in all tissues (p < 0.001) and muscle and liver γ-tocopherol content (p < 0.05). The maternal feeding could be accurately predicted from the carotenoid and tocopherol content of whole lamb carcasses and muscle tissue but not from those of ewes’ milk, lamb liver tissue or lamb fat deposits.

中文翻译：

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母体喂养对哺乳羔羊组织类胡萝卜素和生育酚含量的影响

摘要 本研究的目的是量化哺乳羔羊组织中类胡萝卜素和生育酚的沉积，并使用这些化合物的水平来追踪母体喂养。20 只乳羔在营养阶段牧场饲养，19 只乳羔在室内停放，大坝随意接受干草，直到羔羊达到 10-12 公斤。羔羊每周摄入的类胡萝卜素和生育酚是根据母羊的产奶量以及牛奶中的类胡萝卜素和生育酚含量估算的。在屠宰后 24 小时收集乳羔的皮下和肾周脂肪、胸最长肌和肝脏样品。在整个哺乳期，牧场饲养的羔羊比室内羔羊摄入更多的叶黄素（p < 0.05），在哺乳期的第二周和第三周，更多的视黄醇 (p < 0.05)，在哺乳期的前三周 (p < 0.05)，更多的 α-生育酚，此后类似。与室内饲养的羔羊相比，牧场饲养的羔羊肌肉和肝脏中的叶黄素含量更高（p < 0.001），所有组织中的视黄醇和α-生育酚含量（p < 0.001）以及肌肉和肝脏中的γ-生育酚含量更高含量 (p < 0.05)。母体喂养可以根据全羊尸体和肌肉组织的类胡萝卜素和生育酚含量来准确预测，但不能根据母羊奶、羊肝组织或羔羊脂肪沉积物的含量进行准确预测。与室内饲养的羔羊相比，牧场饲养的羔羊肌肉和肝脏中的叶黄素含量更高（p < 0.001），所有组织中的视黄醇和α-生育酚含量（p < 0.001）以及肌肉和肝脏中的γ-生育酚含量更高含量 (p < 0.05)。母体喂养可以根据全羊尸体和肌肉组织的类胡萝卜素和生育酚含量来准确预测，但不能根据母羊奶、羊肝组织或羔羊脂肪沉积物的含量进行准确预测。与室内饲养的羔羊相比，牧场饲养的羔羊肌肉和肝脏中的叶黄素含量更高（p < 0.001），所有组织中的视黄醇和α-生育酚含量（p < 0.001）以及肌肉和肝脏中的γ-生育酚含量更高含量 (p < 0.05)。母体喂养可以根据全羊尸体和肌肉组织的类胡萝卜素和生育酚含量来准确预测，但不能根据母羊奶、羊肝组织或羔羊脂肪沉积物的含量进行准确预测。