Journal
AQUACULTURE REPORTS
Volume 3, Issue -, Pages 131-135Publisher
ELSEVIER
DOI: 10.1016/j.aqrep.2016.02.001
Keywords
Larger yellow croaker; Copper; Antioxidant enzyme; Lipid metabolism enzyme
Categories
Funding
- National Natural Science Foundation of China [31272661]
- Open Fund of Zhejiang Provincial Top Key Discipline of Aquaculture in Ningbo University [xkzsc1401, xkzsc1403]
- Natural Science Foundation of Ningbo City [2014A610180]
- K. C. Wong Magna Fund
- K. C. Wong Education Foundation at Ningbo University
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A study was carried out to test the responses of juvenile larger yellow croaker Larimichthys croceus to high Cu intake. Experimental diets were formulated containing three levels of Cu: low Cu (3.67 mg/kg), middle Cu (13.65 mg/kg) and high Cu (25.78 mg/kg), and each diet were fed to large yellow croaker in triplicate for 10 weeks. Final body weight, weight gain and feed intake were the lowest in high Cu group, buthepatosomatic index was the highest; Cu concentrations in the whole-body, muscle and liver of fish fed low Cu diet was the lowest; Liver superoxide dismutase, catalase and glutathione peroxidase activities in fish fed high Cu diet were lower than those in fish fed other diets; The higher content of liver thiobarbituricacid reactive substance content was found in high Cu group, followed by middle Cu group, and the lowest in low Cu group; Liver 6-phosphogluconate dehydrogenase, glucose-6-phosphate dehydrogenase, malicenzyme, isocitrate dehydrogenase and fatty acid synthase activities were the lowest in high Cu group, but lipoprotein lipase activity was the highest. This study indicated that high copper intake reduced growth of juvenile larger yellow croaker, inhibited activities of antioxidant enzymes and lipid synthetases, and led to energy mobilization. (C) 2016 The Authors. Published by Elsevier B.V.
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