Effect of Dietary L-Carnitine Supplementation on Growth, Serum Biochemical Indices, Oxidative and Growth-Related Gene Expressions in Chinese Soft-Shelled Turtle (Pelodiscus sinensis)
文献类型： 外文期刊
作者： Lu, Xing 1 ; Dawood, Mahmoud A. O. 2 ; Wu, Fan 1 ; Wen, Hua 1 ; Liu, Wei 1 ; Tian, Juan 1 ; Jiang, Ming 1 ; Yu, Li -Juan 1 ; Li, Xiang 3 ; Xu, Ning 3 ; Liang, Hong-Wei 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China
2.Kafrelsheikh Univ, Fac Agr, Dept Anim Prod, Kafr Al Sheikh 33516, Egypt
3.Anhui XIjia Agr Dev Co Ltd, Bengbu 233700, Peoples R China
关键词： Pelodiscus sinensis; L-carnitine; Growth performance; Lipid deposition; Gene expression
期刊名称：PAKISTAN JOURNAL OF ZOOLOGY （ 影响因子：0.687； 五年影响因子：0.736 ）
ISSN： 0030-9923
年卷期： 2022 年 54 卷 5 期
页码：
收录情况： SCI
摘要： This study was conducted to investigate the effects of dietary L-carnitine supplementation in Chinese soft-shelled turtle, Pelodiscus sinensis. Four experimental diets were formulated with the addition of L-carnitine at the levels of 0 (control), 100, 200 and 400 mg kg(-1). Each diet was fed to triplicate groups of turtles with initial average weight (394.4 +/- 3.8 g) for 8 weeks. Our results showed that the weight gain rate (WGR), specific growth rate (SGR) and feed efficiency (FE) of Chinese soft-shelled turtles increased linearly with increasing dietary L-carnitine levels from 0 to 200 mg kg(-1), but declined slightly with the L-carnitine supplementation at 400 mg kg(-1). Muscle protein content was significantly increased when turtles were fed diets with 200 or 400 mg kg(-1) L-carnitine (P < 0.05). The serum biochemical indices analysis revealed that dietary L-carnitine at 400 mg kg(-1) had markedly reduced triglyceride (TG) concentration (P < 0.05). The elevated expression of hepatic igf1 gene at the transcriptional level was positively correlated with dietary L-carnitine levels on the growth performance of Chinese soft-shelled turtle. Furthermore, dietary L-carnitine supplementation significantly up-regulated the mRNA levels of superoxide dismutase 1 (sod1) and lipoprotein lipase (lpl) genes in the liver of Chinese soft-shelled turtle (P < 0.05). All the above results indicated that appropriate dietary L-carnitine supplementation could improve growth performance, increase muscle protein content, reduce serum TG concentration, and induce the antioxidant- and lipometabolism-associated genes expression in Chinese soft-shelled turtle.
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