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草业学报 ›› 2023, Vol. 32 ›› Issue (11): 140-154.DOI: 10.11686/cyxb2023008

• 研究论文 • 上一篇    

放牧条件下萨福克与河谷型藏绵羊杂交F1代不同部位肌肉营养品质分析

刘孟君1,2(), 任越1,2()   

  1. 1.西藏自治区农牧科学院畜牧兽医研究所,西藏 拉萨 850000
    2.农业农村部青藏高原畜禽遗传育种重点实验室,西藏 拉萨 850000
  • 收稿日期:2023-01-05 修回日期:2023-02-23 出版日期:2023-11-20 发布日期:2023-09-27
  • 通讯作者: 任越
  • 作者简介:E-mail: 1017738051@qq. com
    刘孟君(1990-),男,四川内江人,助理研究员,硕士。E-mail: 1023597794@qq. com
  • 基金资助:
    萨福克杂交肉羊营养调控技术研究(XZ202001ZY0047N);西藏羊品种选育与健康养殖(XZ2021ZD0001N)

Meat quality and nutritional indexes of three muscles of the F1 generation of crossbred sheep (Suffolk×river valley-type Tibetan) raised under grazing conditions

Meng-jun LIU1,2(), Yue REN1,2()   

  1. 1.Institute of Livestock Research,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850000,China
    2.Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau,Ministry of Agriculture and Rural Affairs,Lhasa 850000,China
  • Received:2023-01-05 Revised:2023-02-23 Online:2023-11-20 Published:2023-09-27
  • Contact: Yue REN

摘要:

为探究萨福克与河谷型藏绵羊杂交F1代肌肉品质营养特性,测定了背最长肌、臂三头肌、股二头肌的肉色、熟肉率、pH、常规营养指标、矿物元素、胆固醇、维生素A、维生素E、维生素B1、维生素B2、氨基酸和脂肪酸含量。结果表明:杂交F1代3个不同部位肉品质有一定差异,主要表现在肉色、粗蛋白质、锌元素、氨基酸、脂肪酸含量方面。其中,背最长肌、臂三头肌的肉色L*值显著高于股二头肌(P<0.05),背最长肌、股二头肌的肉色a*值显著高于臂三头肌(P<0.05),背最长肌的肉色b*值显著高于臂三头肌、股二头肌(P<0.05);背最长肌的粗蛋白含量显著高于臂三头肌(P<0.05);臂三头肌的锌元素含量显著高于背最长肌、股二头肌(P<0.05);臂三头肌的谷氨酸含量显著高于背最长肌(P<0.05),背最长肌的组氨酸含量显著高于股二头肌、臂三头肌(P<0.05);背最长肌、股二头肌的棕榈酸含量显著高于臂三头肌(P<0.05),臂三头肌的花生四烯酸含量显著高于背最长肌(P<0.05)。综上所述,臂三头肌鲜味类氨基酸含量略高于背最长肌,背最长肌肉品质优于臂三头肌、股二头肌,且3个部分肌肉蛋白营养价值差异不大,均符合人类健康膳食标准。

关键词: 萨福克与河谷型藏绵羊杂交F1代, 放牧, 不同部位, 肉品质, 营养组成

Abstract:

The aim of this study was to investigate the quality and nutritional characteristics of meat from the F1 generation of crossbred Suffolk×river valley-type Tibetan sheep. The meat color, cooked meat rate, pH, conventional nutritional indexes, and contents of minerals, cholesterol, vitamin A, vitamin E, vitamin B1, vitamin B2, amino acids, and fatty acids in three muscles (longissimus dorsi, brachial triceps, and biceps femoris) were determined. It was found that there were some differences in meat quality among three different muscles of the crossbred F1 generation, mainly in meat color and the contents of crude protein, zinc, amino acids, and fatty acids. In CIE-Lab color analyses, the meat color L* (lightness) value was significantly higher for the longissimus dorsi and triceps brachii than for the biceps femoris (P<0.05), the meat color a* value was significantly higher for the longissimus dorsi and biceps femoris than for the triceps brachii (P<0.05), and the meat color b* value was significantly higher for the longissimus dorsi than for the triceps brachii and biceps femoris (P<0.05). The crude protein content was significantly higher in the longissimus dorsi than in the triceps brachii (P<0.05), and the zinc content was significantly higher in the triceps brachii than in the longissimus dorsi and biceps femoris. The glutamate content was significantly higher in the triceps brachii than in the longissimus dorsi (P<0.05), and the histidine content was significantly higher in the longissimus dorsi than in the biceps femoris and triceps brachii (P<0.05). The palmitic acid content was significantly higher in the longissimus dorsi and biceps femoris than in the triceps brachii (P<0.05). The arachidonic acid content was significantly higher in the brachialis triceps than in the longissimus dorsi (P<0.05). In conclusion, the fresh taste amino acid content was slightly higher in the brachial triceps than in the longissimus dorsi, and the quality of the longissimus dorsi was better than that of the brachial triceps and biceps femoris. The nutritional values of the three muscles were similar, and all of them met the human healthy diet standards.

Key words: F1 generation of Suffolk crossed with river valley type Tibetan sheep, grazing, different parts, meat quality, nutrient composition