绵羊肉品质性状的测定与分析

[目的]分析绵羊的肉品理化性状,揭示绵羊肉品品质的内在特性。[方法]对德克萨尔羊、中国美利奴新疆军垦型和湖羊3个绵羊品种的背最长肌的肌肉失水率、肌内脂肪、水分、熟肉率、肌纤维密度及肌纤维直径进行测定和比较。[结果]德克萨尔羊的肌内脂肪含量最高,显著高于中国美利奴新疆军垦型和湖羊,德克萨尔羊的熟肉率极显著高于中国美利奴新疆军垦型和湖羊,失水率低于中国美利奴新疆军垦型和湖羊,水分各品种羊差异均不显著;德克萨尔羊肌纤维密度最大且极显著高于湖羊、显著高于中国美利奴新疆军垦型,湖羊肌纤维直径极显著高于中国美利奴新疆军垦型和德克萨尔羊。[结论]该研究为羊的肉质评定提供了理论依据。

Determination and Analysis on Traits of Meat Quality in Sheep

[Objective] The study aimed to analyze the physical and chemical traits and reveal the internal properties of meat quality in sheep.[Method] The physical and chemical traits such as the muscle water loss rate,intramuscular fat content,water loss rate,water,the rate of cooked meat,muscle fiber density and diameter in the back of the longest muscle in 3 sheep varieties of Dekesaer sheep,China Merino-the Fine-Wool Sheep of Xinjiang military reclamation variety and Lake sheep were determined and compared.[Result] Dekesaer sheep had highest intramuscular fat content,being significantly higher than that of China Merinothe Fine-Wool Sheep of Xinjiang military reclamation variety and Lake sheep.The rate of cooked meat of Dekesaer sheep was extremely significantly higher and its water loss rate was below than that of China Merino-the Fine-Wool Sheep of Xinjiang military reclamation variety and Lake sheep.There was no significant difference on muscle water between 3 sheep varieties.Dekesaer sheep had the greatest density of muscle fiber,being extremely significantly higher than that of Lake sheep and significantly higher than that of China Merino-the Fine-Wool Sheep of Xinjiang military reclamation variety.The muscle fiber diameter of Lake sheep was significantly higher than that of China and the United States Merino Xinjiang Junken type and Dekesaer sheep.[Conclusion] This study provides the theoretical basis for the assessment on the meat quality in sheep.