Effects of Supplementation of Microalgae (Aurantiochytrium sp.) to Laying Hen Diets on Fatty Acid Content, Health Lipid Indices, Oxidative Stability, and Quality Attributes of Meat

文献类型： 外文期刊

第一作者： Liu, Bing

作者： Liu, Bing;Jiang, Jiang;Xiong, Youling L.;Liu, Bing;Yu, Dongyou;Lin, Gang;Xiong, Youling L.

作者机构：

关键词： Aurantiochytrium sp.; health lipid indices; oxidative stability; meat quality; laying hens

期刊名称：FOODS （ 影响因子：4.35； 五年影响因子：4.957 ）

ISSN：

年卷期： 2020 年 9 卷 9 期

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收录情况： SCI

摘要： The present study is conducted to investigate the effects of dietary docosahexaenoic acid (DHA)-rich microalgae (MA,Aurantiochytriumsp.) on health lipid indices, stability, and quality properties of meat from laying hens. A total of 450 healthy 50-wk-old Hy-Line Brown layers were randomly allotted to 5 groups (6 replicates of 15 birds each), which received diets supplemented with 0, 0.5, 1.0, 1.5, and 2.0% MA for 15 weeks. Fatty acid contents and quality properties of breast and thigh muscles from two randomly selected birds per replicate (n= 12) were measured. The oxidative stability of fresh, refrigerated, frozen, and cooked meat was also determined. Results indicated that supplemental MA produced dose-dependent enrichments of long-chain n-3 polyunsaturated fatty acids (n-3 LC-PUFA), predominantly DHA, in breast and thigh muscles, with more health-promoting n-6/n-3 ratios (1.87-5.27) and favorable lipid health indices (p< 0.05). MA supplementation did not affect tenderness (shear force) and color (L*,a*, andb* values) of hen meat nor muscle endogenous antioxidant enzymes and fresh meat oxidation (p> 0.05). However, the n-3 LC-PUFA deposition slightly increased lipid oxidation in cooked and stored (4 degrees C) meat (p< 0.05). In conclusion, MA supplementation improves the nutritional quality of hen meat in terms of lipid profile without compromising meat quality attributes. Appropriate antioxidants are required to mitigate oxidation when such DHA-enriched meat is subjected to cooking and storage.

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