The aim of this study was to investigate the effect of spirulina supplementation in a high-energy (HE) diet on lipid metabolism, oxidative status and immunity in Hu lambs. The lambs were assigned to two groups receiving either a standard diet (ST) or a HE diet. Each group was divided into three subgroups: no spirulina supplementation (control), 1% spirulina supplementation, or 3% spirulina supplementation. The body fat, serum cholesterol, triacylglycerol and oxidative stress increased in lambs fed the HE diet. However, 3% spirulina supplementation in the HE diet reduced above parameters and enhanced antioxidant capacity, including increased SOD activity and T-AOC content in serum and Longissimus thoracis et lumborum (LTL). Additionally, lambs receiving 3% spirulina supplementation showed an improvement in immunity-related parameters, including increased IgG concentration in serum and red and white blood cell counts. In conclusion, 3% spirulina supplementation in HE diet ameliorated lipid metabolic disorder and oxidative stress caused by a HE diet.

这项研究的目的是调查高能量（HE）饮食中补充螺旋藻对on羔羊脂质代谢，氧化状态和免疫力的影响。将羔羊分为两组，分别接受标准饮食（ST）或HE饮食。每组分为三个亚组：不补充螺旋藻（对照组），补充1％螺旋藻或补充3％螺旋藻。喂HE饮食的羔羊的体内脂肪，血清胆固醇，三酰甘油和氧化应激增加。但是，在高脂饮食中添加3％的螺旋藻可降低上述参数并增强抗氧化能力，包括增加血清和猪腰肉和腰肉中的SOD活性和T-AOC含量（LTL）。此外，接受3％螺旋藻补充的羔羊的免疫相关参数有所改善，包括血清中IgG浓度增加以及红细胞和白细胞计数增加。总之，在HE饮食中补充3％螺旋藻可改善HE饮食引起的脂质代谢紊乱和氧化应激。