Effects of dietary inorganic copper on growth performance and immune responses of juvenile beluga,Huso huso

• DOI: 10.1111/anu.12107
• Publication Date: 2014-02-19T08:15:06Z
• Authors: M. Mohseni; M. Pourkazemi; S.C. Bai
• Keywords: Huso; Beluga; Beluga Whale

A 12-week feeding trial was conducted to evaluate the optimum dietary inorganic copper (copper sulphate) in juvenile beluga, Huso huso. Eight semi-purified diets containing 1.1 (Cu1.0), 3.5 (Cu4.0), 7.1 (Cu7.0), 9.7 (Cu10), 13.1 (Cu13), 25.1 (Cu25), 49.9 (Cu50) and 195 (Cu195) mg Cu kg−1 diet form of CuSO4.5H2O were fed fish initial body weight 8.49 ± 0.32 g length 11.85 0.66 cm (mean SD) triplicate groups a flow-through system. Weight gain (WG) Cu10 Cu13 significantly higher than that Cu1.0, Cu4.0, Cu25, Cu50 Cu195 (P < 0.05). Whole-body muscle crude protein increased with up supplementation level then decreased. lipid content negatively correlated, while whole-body ash positively correlated concentration. Hepatic copper–zinc superoxide dismutase activity Cu4.0 diets. thiobarbituric acid-reactive substances lower those other except for diet. Aspartate aminotransferase, alanine aminotransferase accumulation tissues copper. Broken-line analysis WG suggested 10.3 Therefore, these results may indicate levels could be greater but less when sulphate is used as source