山谷型藏羊与青海半细毛羊和青海藏羊的肌肉营养成分测定比较

为研究推广优良品种优势，更好地服务于选种、选育和羊肉生产性能推广应用，选取山谷型藏羊与青海半细毛羊和青海藏羊3个品种、不同年龄的羯羊，开展肌肉营养成分分析和氨基酸含量测定，结果表明：山谷型藏羊主要营养指标和检测数据为：粗蛋白含量为21.00%,粗脂肪3.15%,胆固醇0.3650(mg/g),挥发性盐基氮0.1190(mg/g),矿物质总量6 785(mg/g),能量为4.74(kJ/g),氨基酸总量比青海半细毛羊高16.08%,比青海藏羊高5.06%。结论是挥发性盐基酸的含量可反映了羊肉的新鲜程度，在0.15 mg/g以内均为新鲜，说明本次分析检测的羊肉具有高能量、高蛋白、低脂肪、低胆固醇和氨基酸含量丰富的食品，是符合无公害食品。

Comparison of the Determination of Muscle Nutrients of Valley Type Tibetan Sheep, Qinghai Semi fine Wool Sheep and Qinghai Tibetan Sheep

In order to study and promote the advantages of excellent breeds and better serve the promotion and application of seed selection, breeding and mutton production performance, this study selected three breeds of valley type Tibetan sheep, Qinghai semi fine wool sheep and Qinghai Tibetan sheep, and Jie sheep of different ages. We carry out muscle nutrient composition analysis and amino acid content determination. The results show that the main nutritional indicators and testing data of valley type Tibetan sheep are crude protein content of 21.00%, crude fat 3.15%, cholesterol 0.3650 (mg/g), volatile base nitrogen 0.1190 (mg/g), and total mineral content 6 785 (mg/g), energy is 4.74 (kJ/g). Its total amino acid content is 16.08% higher than Qinghai semi fine wool sheep and 5.06% higher than Qinghai Tibetan sheep. The conclusion of this study is that the content of volatile basic acids can reflect the freshness of mutton, and anything within 0.15mg/g is considered fresh. This shows that the mutton tested in this analysis has high energy, high protein, low fat, low cholesterol and rich amino acid content, and is a pollution free food.