The aim of the present trial was to evaluate the effects of dietary sea buckthorn pomace (SBP) supplementation on muscle mass, meat nutritional value and quality of lambs. The results showed that dietary 16% SBP supplementation increased muscle mass and altered muscle fiber size distribution. Both nutritional compositions, including crude protein, moisture and ash, and lamb meat quality, including pH, color and cooking loss were not affected by SBP supplementation. Importantly, crude fat content was elevated, and shear force was decreased in Longissimus thoracis (LT) when lambs were fed the SBP containing diet. Moreover, the total antioxidative capacity in LT and the HDL content in serum were elevated in SBP feed lambs. Dietary SBP supplementation increased the Akt/mTOR signaling activity, and downregulated myostatin expression. Taken together, these data suggested that SBP could be used as a feed ingredient for lamb meat production by increasing muscle mass and improving tenderness, water holding capacity and antioxidative capacity of resulting meat.

本试验的目的是评估膳食沙棘果渣（SBP）补充剂对肌肉质量，肉类营养价值和羔羊品质的影响。结果表明，饮食中添加16％SBP可以增加肌肉质量并改变肌肉纤维大小分布。包括粗蛋白，水分和灰分在内的两种营养成分，以及包括pH值，颜色和蒸煮损失在内的羔羊肉品质均不受SBP补充的影响。重要的是，Longissimus thoracis的粗脂肪含量增加，剪切力降低（LT）喂羔羊含饮食的SBP。此外，SBP羔羊的总抗氧化能力和血清高密度脂蛋白含量升高。膳食补充SBP可增加Akt / mTOR信号转导活性，并下调Myostatin表达。综上所述，这些数据表明，SBP可以通过增加肌肉质量和改善肉的嫩度，保水能力和抗氧化能力而用作羔羊肉的饲料原料。