Creatine improves the flesh quality of Pacific white shrimp (Litopenaeus vannamei) reared in freshwater
文献类型： 外文期刊
作者： Cheng, Xiaoli 1 ; Li, Meifeng 1 ; Leng, Xiangjun 3 ; Wen, Hua 1 ; Wu, Fan 1 ; Yu, Lijuan 1 ; Jiang, Ming 1 ; Lu, Xing 1 ; Ga 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Key Lab Freshwater Biodivers Conservat, Minist Agr, Wuhan 430223, Peoples R China
2.Yangtze Univ, Coll Anim Sci, Jingzhou 434024, Peoples R China
3.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
关键词： Litopenaeus vannamei; Creatine; Flesh quality; Myofiber; Amino acid
期刊名称：FOOD CHEMISTRY （ 影响因子：6.306； 五年影响因子：6.219 ）
ISSN： 0308-8146
年卷期： 2021 年 354 卷
页码：
收录情况： SCI
摘要： Creatine improves flesh quality on mammalian but studies on crustaceans are scarce. In the present study, diets with six levels of creatine (1.23, 2.58, 5.12, 8.28, 14.12, 24.49 g kg(-1) diet) were hand-fed to juvenile Litopenaeus vannamei (IBW: 1.50 +/- 0.02 g) reared in freshwater for 46 days. Results showed creatine supplementation did not affect the growth performance (FBW: 17.04 +/- 1.28 g) or the content of guanidinoacetic acid in muscle and hepatopancreas whereas significantly increased muscular creatine content. Diet with 8.28 g kg(-1) creatine significantly increased muscular hardness and chewiness by decreasing myofiber diameter and increasing myofiber density. Additionally, creatine downregulated the mRNA expression of fast sMyHC1, sMyHC2, sMyHC6a and upregulated slow sMyHC5 and sMyHC15 mRNA expression. Muscular protein, collagen, total amino acid and flavor amino acid contents increased with creatine supplementation. In conclusion, the diet with 8.28 g kg(-1) creatine improved the flesh quality of L. vannamei.
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