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Effects of dietary vitamin B-1 on growth performance, intestinal digestion and absorption, intestinal microflora and immune response of juvenile golden pompano (Trachinotus ovatus)

文献类型： 外文期刊

作者： Xun, Pengwei 1 ; Lin, Heizhao 1 ; Wang, Ruixuan 1 ; Huang, Zhong 1 ; Zhou, Chuanpeng 1 ; Yu, Wei 1 ; Huang, Qianqian 1 ;

作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Minist Agr, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Guangdong, Peoples R China

2.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201506, Peoples R China

3.Chinese Acad Fishery Sci, Shenzhen Base South China Sea Fisheries Res Inst, Shenzhen 518121, Peoples R China

关键词： Golden pompano; Vitamin B-1; Growth performance; Intestinal digestion and absorption; Intestinal microflora; Immune response

期刊名称：AQUACULTURE （ 影响因子：4.242； 五年影响因子：4.723 ）

ISSN： 0044-8486

年卷期： 2019 年 506 卷

页码：

收录情况： SCI

摘要： The study was conducted to investigate the effects of dietary vitamin B-1 on growth performance, intestinal digestion and absorption, intestinal microflora, and the immune response of juvenile golden pompano. Six isonitrogenous and isolipidic diets were formulated, containing diet-1 (0 mg/kg), diet-2 (4.88 mg/kg), diet-3 (8.15 mg/kg), diet-4 (12.00 mg/kg), diet-5 (17.40 mg/kg) and diet-6 (20.40 mg/kg) of vitamin B-1. The diets were fed to juvenile golden pompano (initial body weight: 11.20 +/- 0.15 g) for 8 weeks. The study indicated that dietary vitamin B-1 significantly increased weight gain rate (WGR) (P < .05), specific growth rate (SGR) (P < .05), and feed efficiency ratio (FER) (P < .05) of golden pompano. Dietary vitamin B-1 levels had a significant effect on serum total cholesterol (TC) (P < .05), glucose (GLU) (P < .05), C4 complement (C4) (P < .05) and lysozyme (LZM) (P < .05). A diet supplemented with 12.00 mg/kg vitamin B-1 increased the activities of hepatic total antioxidant capacity catalase (CAT) (P < .05), superoxide dismutase (SOD) (P < .05), glutathione peroxidase (GPX) (P < .05), glutathione reductase (GR) (P < .05), transketolase (TK) (P < .05) and hepatic vitamin B-1 accumulation (P < .05), decreasing the activities of hepatic malondialdehyde (MDA) (P < .05). A diet supplemented with 12.00 mg/kg vitamin B-1 improved intestinal digestion and absorption by increasing the activities of intestinal chymotrypsin (P < .05), gamma-glutamyl transferase (gamma-GT) (P < .05), and creatine kinase (CK) (P < .05). Dietary vitamin B-1 also increased the intestinal microvilli length and microvilli numbers to a certain degree. Dietary vitamin B-1 increased the richness and the diversity of the microbial community (P < .05; Tukey test). Dietary vitamin B-1 increased the number of Pseudomonas and restricted the number of Mycoplasma and E. shigella in intestine. A quadratic regression analysis on weight gain and hepatic vitamin B-1 concentrations indicated that the optimum dietary vitamin B-1 levels for the optimal growth of juvenile pompano were 12.94 and 12.61 mg/kg, respectively.

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