Liu Dongwu, Li Lingyao, Shan Lingling, Zhang Qin, Yu Hairui
School of Life Sciences and Medicine, Shandong University of Technology, Zibo 255049, China.
Key Laboratory of Biochemistry and Molecular Biology in Universities of Shandong (Weifang University), Weifang Key Laboratory of Coho Salmon Culturing Facility Engineering, Institute of Modern Facility Fisheries, College of Biology and Oceanography, Weifang University, Weifang 261061, China.
Food Chem X. 2022 Jul 27;15:100405. doi: 10.1016/j.fochx.2022.100405. eCollection 2022 Oct 30.
We investigated effect of dietary iron (Fe) on the lipid deposition, nutritional element, and muscle quality in coho salmon. Four level Fe diets at 23.7, 46.4, 77.3, and 127.7 mg/kg were fed to the post-larval coho salmon for 12 weeks. Our results showed that dietary Fe decreased the content of triglyceride and the activity of fatty acid synthetase, ATP-citrate lyase, and acetyl-CoA carboxylase. The content of Fe in muscle was increased with increasing dietary Fe levels, and dietary Fe affected the content of nutritional elements. In addition, dietary Fe levels affected the composition of fatty acids and the content of free amino acids, and increased muscle fiber size. The lower dietary Fe levels also affected the hardness, chewiness, resilience, springiness, cohesiveness, and gumminess of salmon muscle. In all, dietary Fe inhibited the lipid deposition and affected the content of nutritional element and muscle quality in coho salmon.
我们研究了饲料中铁（Fe）对银大麻哈鱼脂质沉积、营养元素及肌肉品质的影响。将四种铁含量水平分别为23.7、46.4、77.3和127.7mg/kg的饲料投喂给银大麻哈鱼幼鱼12周。我们的结果表明，饲料中的铁降低了甘油三酯含量以及脂肪酸合成酶、ATP-柠檬酸裂解酶和乙酰辅酶A羧化酶的活性。肌肉中铁的含量随着饲料中铁水平的增加而升高，并且饲料中的铁影响了营养元素的含量。此外，饲料中铁水平影响了脂肪酸组成和游离氨基酸含量，并增加了肌纤维大小。较低的饲料铁水平也影响了大麻哈鱼肌肉的硬度、咀嚼性、弹性、回弹性、内聚性和黏性。总之，饲料中的铁抑制了银大麻哈鱼的脂质沉积，并影响了其营养元素含量和肌肉品质。
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