Restricted feeding benefits the growth performance and glucose homeostasis of blunt snout bream Megalobrama amblycephala fed high-carbohydrate diets
Restricted feeding benefits the growth performance and glucose homeostasis of blunt snout bream Megalobrama amblycephala fed high-carbohydrate diets
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限制饲喂有利于高碳水化合物饮食的团头鲂的生长性能和葡萄糖稳态
DOI：
10.1016/j.aqrep.2020.100513
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发表时间：
2020-11
影响因子：
3.7
通讯作者：
Li Xiang-Fei
中科院分区：
文献类型：
--
作者：
Xu CXhao;Liu Wen-Bin;Wang Bing-Ke;Li Xiang-Fei
本研究旨在探讨限饲对高碳水化合物饲料条件下团头鲂生长性能、糖脂代谢和葡萄糖稳态的影响。将总共240条鱼（46.94 ± 0.04 g）随机分配到四个组中，所述四个组包含对照饮食（30%碳水化合物）的饱腹感和HC饮食（43%碳水化合物）的三个饱腹感水平（100%，HC 1; 80%，HC 2;和60%，HC 3），持续8周。高碳水化合物水平显著降低了日增重系数（DGC）、单位代谢体重生长率（GRMBW）、采食量（FI）以及生长激素（GH）、生长激素受体（GHR）、果糖-1，6-二磷酸酶过氧化物酶体（FBPase）、增殖物激活受体α（PPARα）和肉毒碱棕榈酰转移酶I（CPT I）的转录水平，但肠道酶活性、组织糖原和脂质含量以及葡萄糖激酶（GK）、丙酮酸激酶（PK）、固醇调节元件结合蛋白1（SREBP 1）、脂肪酸合成酶（FAS）和乙酰辅酶A羧化酶α（ACCα）的转录水平则呈相反趋势。HC 2组的DGC、GRMBW、饲料效率、肠道酶活性以及GH、GHR、IGF-I、GK、PK、PPARα和CPT I的转化率均较高。同时，HC 2组在葡萄糖给药后增强了饲喂HC饲料的鱼的葡萄糖耐量。总的来说，80%的饱足水平有利于M的生长速度、饲料效率和葡萄糖稳态.高碳水化合物的饮食。
This study was conducted to investigate the effects of restricted feeding on the growth performance, glycolipid metabolism and glucose homeostasis ofMegalobrama amblycephalafed a high-carbohydrate (HC) diet. A total of 240 fish (46.94 ± 0.04 g) were randomly assigned to four groups containing the satiation of a control diet (30 % carbohydrate) and three satiety levels (100 %, HC1; 80 %, HC2; and 60 %, HC3) of the HC diet (43 % carbohydrate) for 8 weeks. High carbohydrate levels remarkably decreased daily growth coefficient (DGC), growth rate per metabolic body weight (GRMBW), feed intake (FI) and the transcriptions of growth hormone (GH), growth hormone receptor (GHR), fructose-1,6-biphosphatase peroxisome (FBPase), proliferator-activated receptor α (PPARα) and carnitine palmitoyl transferase I (CPT I) compared to the control group, but intestinal enzymes activities, tissue glycogen and lipid contents, and the transcriptions of glucokinase (GK), pyruvate kinase (PK), sterol regulatory element-binding protein 1 (SREBP 1), fatty acid synthase (FAS) and acetyl-CoA carboxylase α (ACCα) showed an opposite trend. Furthermore, HC2 group obtained relatively high values of DGC, GRMBW, feed efficiency ratio (FER), intestinal enzymes activities and the transcriptions of GH, GHR, IGF-I, GK, PK, PPARα and CPT I. Meanwhile, the HC2 group enhanced the glucose tolerance of fish fed HC diet after glucose administration. Overall, the satiation level at 80 % benefited the growth rate, feed efficiency and glucose homeostasis ofM. amblycephalafed a high-carbohydrate diet.
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作者：
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