The effects of dietary carbohydrate on the growth, antioxidant capacities, innate immune responses and pathogen resistance of juvenile Black carp Mylopharyngodon piceus

被引：105

作者：

Wu, Chenglong ^{[1
,2
]}

Ye, Jinyun ^{[1
,2
]}

Gao, Jun'e ^{[1
]}

Chen, Lian ^{[1
]}

Lu, Zhibin ^{[1
]}

机构：

[1] Huzhou Univ, Zhejiang Prov Key Lab Aquat Resources Conservat &, Sch Life Sci, 759 Erhuan Rd E, Huzhou 313000, Peoples R China

[2] Chinese Acad Fishery Sci, Key Lab Aquat Anim Genet Breeding & Nutr, 759 Erhuan Rd E, Huzhou 313000, Peoples R China

来源：

FISH & SHELLFISH IMMUNOLOGY | 2016年 / 49卷

基金：

中国国家自然科学基金;

关键词：

Carbohydrate; Mylopharyngodon piceus; Antioxidant abilities; Gene expression; Innate immune responses; METABOLIC OXIDATIVE STRESS; BLUNT SNOUT BREAM; GENE-EXPRESSION; REACTIVE OXYGEN; RAINBOW-TROUT; GLUCOSE-METABOLISM; SIGNAL-TRANSDUCTION; NITRIC-OXIDE; PROTEIN; DEPRIVATION;

D O I：

10.1016/j.fsi.2015.12.030

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The present study was focused on the growth, antioxidant capacities, innate immune responses and pathogen resistance in juvenile Black carp Mylopharyngodon piceus fed with graded levels of dietary carbohydrate (CHO) (0.6, 106.5, 194.3, 288.4, 379.1 and 473.8 g kg(-1)) for 9 weeks. Results showed that highest weight gain and special growth ratio was obtained at 288.4 g kg(-1) dietary CHO. And adequate dietary CHO content (288.4 g kg(-1)) could significantly increase the activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (Gpx), promote reduced glutathione (GSH) content and then increase the total antioxidant capacities (TAOC) in the liver of M. piceus. However, the malondialdehyde (MDA) levels in the fish liver could be significantly aggravated by excessive dietary CHO. Serum cortisol (COL) levels could be significantly increased in juvenile Black carp M. piceus fed with 379.1 g kg(-1) dietary CHO compared with CHO-deficient diets. Activities of alanine transaminase (GPT) and aspartate transaminase (GOT) were both decreased in the serum of juvenile Black carp M. piceus fed with 194.3 g kg(-1) dietary CHO compared with CHO-deficient diets (0.6 and 106.5 g kg(-1)) or CHO-excess diets (379.1 and 473.8 g kg(-1)). In addition, 288.4 g kg(-1) dietary CHO could significantly up-regulate the mRNA expression levels of hepcidin (HEPC), natural resistance-associated macrophage protein (NRAMP), tumor necrosis factor-alpha (TNF-alpha) and interferon (IFN), lysozyme (LYZ) and complement component 3 (C3) in the blood and liver samples of juvenile Black carp M. piceus compared with the CHO-deficient diets (0.6 and 106.5 g kg(-1)). Moreover, 288.4 g kg(-1) dietary CHO could also enhance the contents of C3 and plasma nitrogen monoxide (NO), and increase the activities of LYZ and total nitric oxide synthase (t-NOS) in the serum compared with the CHO-deficient or CHO-excess diets. Furthermore, the survival rates were also increased by adequate dietary CHO (194.3 and 288.4 g kg(-1)) fed to juvenile Black carp M. piceus after infection with Aeromonas hydrophila. In conclusion, these results suggest that adequate dietary CHO (288.4 g kg(-1)) could increase growth, reduce oxidative stress, enhance innate immune responses, improve the health states and then promote disease resistance in juvenile Black carp M. piceus. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：132 / 142

页数：11

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