Laboratoire de Productions Animales et Fourragères, INRA-Tunisia, University of Carthage, rue Hédi Karray, Ariana 2049, Tunisia.
UR-UR PATIO (UR17AGR01), INAT, University of Carthage, 43 Avenue Charles Nicole, Tunis 1082, Tunisia.
Molecules. 2020 Oct 27;25(21):4975. doi: 10.3390/molecules25214975.
The aim of this work was to study the sheep meat physicochemical traits as affected by distilled myrtle residues (MR) supplementation. For this, 27 culled ewes were divided into three groups receiving a ration composed by concentrate and hay for the Control group, concentrate and MR as a total substitute to hay for the Myrt-H group, or hay, less concentrate, and MR as a partial substitute to concentrate for the Myrt-C group. The meat chemical composition, pH, and color parameters were not affected by the MR intake. However, this animal's dietary treatment resulted in higher meat polyphenol and α-tocopherol content for both MR groups (9.38 and 8.05 vs. 3.04 μg g DM for Myrt-H, Myrt-C, and Control, respectively). In addition, since day 3 of meat storage, the lipid oxidation was improved by MR intake being lower for both MR groups than the Control (0.51 vs. 1.11 mg MDA/kg of meat). The total polyunsaturated fatty acid (PUFA) and saturated fatty acid (SFA) were similar among groups. However, the meat of Myrt-H had the highest C18:2n-6 and total PUFAn-6. In conclusion, the MR intake could be useful given it increases the meat content of vitamin E and improves its oxidative status without negative effects on the FA profile.
本研究旨在探讨迷迭香残渣(MR)对羊肉理化特性的影响。为此,将 27 只淘汰母羊分为三组,对照组接受以浓缩饲料和干草组成的日粮,Myrt-H 组以 MR 完全替代干草,Myrt-C 组则以 MR 部分替代浓缩饲料。MR 摄入量并未影响肉的化学成分、pH 值和颜色参数。然而,这种动物的饮食处理导致 MR 组的肉中多酚和α-生育酚含量更高(9.38 和 8.05μg g DM 分别对应 Myrt-H、Myrt-C 和对照组,而对照组为 3.04μg g DM)。此外,从第 3 天开始,MR 摄入可改善肉的脂质氧化,Myrt-H 和 Myrt-C 组的 MDA 含量(0.51 和 1.11mg MDA/kg 肉)均低于对照组。各组之间的总多不饱和脂肪酸(PUFA)和饱和脂肪酸(SFA)相似。然而,Myrt-H 组的肉中 C18:2n-6 和总 PUFA n-6 含量最高。总之,MR 摄入量可能有用,因为它增加了肉中维生素 E 的含量,改善了其氧化状态,而对 FA 谱没有负面影响。