文献类型：期刊文献

英文题名：Improved growth performance, digestive ability, antioxidant capacity, immunity and Vibrio harveyi resistance in coral trout (Plectropomus leopardus) with dietary vitamin C

作者：Zhu, Xiaowen[1,3,4];Hao, Ruijuan[2];Zhang, Junpeng[1,3,4];Tian, Changxu[1,3,4];Hong, Yucong[5];Zhu, Chunhua[1,2];Li, Guangli[1,3,4]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China;[2]Southern Marine Sci & Engn Guangdong Lab Zhanjian, Zhanjiang 524025, Peoples R China;[3]Guangdong Res Ctr Reprod Control & Breeding Techn, Zhanjiang 524088, Peoples R China;[4]Guangdong Prov Key Lab Pathogen Biol & Epidemiol, Zhanjiang 524088, Peoples R China;[5]Guangdong Yuequn Biotechnol Co Ltd, Guangdong Prov Key Lab Aquat Larvae Feed, Jieyang 522000, Peoples R China

年份：2022

卷号：24

外文期刊名：AQUACULTURE REPORTS

收录：SCI-EXPANDED(收录号：WOS:000794067300011)、、Scopus(收录号：2-s2.0-85127489100)、WOS

基金：This work was supported by the Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) (Grant No. ZJW-201906); Jieyang City Science and Technology Plan Project (Grant No. 2019066); National Nature Science Foundation of China (Grant No. 32102766); National Key R&D Program of China (Grant No. 2020YFD0901100 & 2020YFD0901103).

语种：英文

外文关键词：Growth performance; Immunity; Oxidation resistance; Vibrio harveyi; Vitamin C

外文摘要：An 8-week growth trial was conducted to assess the effects of dietary vitamin C (VC) on the growth performance, digestive enzyme activity, antioxidant ability, immunity, and resistance to Vibrio harveyi infection of coral trout (Plectropomus leopardus, initial weight 17.42 +/- 0.06 g). Four kinds of iso-nitrogenous and iso-lipidic experimental feeds were formulated with covering VC levels of 0 (C0), 50 (C1), 100 (C2), and 200 (C3) mg/kg, respectively. Supplementation of an appropriate amount of VC in diet (a) increased specific growth rate (SGR) and weight gain rate (WGR); (b) increased amylase, lipase, and trypsin activities in the liver; (c) enhanced glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) activities, and reduced malonic dialdehyde (MDA) level in serum and liver; (d) increased lysozyme (LZ) and acid phosphatase (ACP) activities in serum and liver, as well as complement (C3 and C4) and immunoglobulin M (IgM) contents in the liver; (e) upregulated the relative expression of copper-zinc superoxide dismutase (SOD-1), manganese superoxide dismutase (SOD-2), CAT, GSH-Px1a, ACP6, AKP,LZ-c, IgM, C3, and C4-b in the liver; (f) improved the survival rate of V. harveyi challenge. In summary, an appropriate amount of VC could improve growth, digestive ability, antioxidant capacity, immunity, and the ability to resist the challenge of V. harveyi in coral trout. In order to ensure that coral trout has good growth performance, digestive and antioxidant capacity, it is recommended that the levels of VC in the feed is between 255.25 and 273.84 mg/kg. The immunity of coral trout is stronger when the VC level in the diet is between 251.95 and 314.03 mg/kg.