Effects of dietary methionine and taurine supplementation to low-fish meal diets on growth performance and oxidative status of European sea bass (Dicentrarchus labrax) juveniles

被引:80
作者
Coutinho, F. [1 ,2 ]
Simoes, R. [1 ]
Monge-Ortiz, R. [3 ]
Furuya, W. M. [4 ]
Pousao-Ferreira, P. [5 ]
Kaushik, S. [6 ]
Oliva-Teles, A. [1 ,2 ]
Peres, H. [2 ]
机构
[1] Univ Porto, Dept Biol, Fac Ciencias, Rua Campo Alegre,Edificio FC4, P-4169007 Oporto, Portugal
[2] Univ Porto, Ctr Interdisciplinar Invest Marinha & Ambiental, CIIMAR, Av Gen Norton Matos S-N, P-4050208 Matosinhos, Portugal
[3] Univ Politecn Valencia, GAB, Inst Ciencia Tecnol & Anim, Grp Invest Acuicultura & Biodiversidad, Valencia, Spain
[4] Univ Estadual Maringa, Dept Zootecn, BR-5790 Maringa, Parana, Brazil
[5] IPIMAR CRIPSul, Olhao, Portugal
[6] Univ Las Palmas Gran Canaria, European Res Area ERA Chair, EcoAqua, Los Palmas 35214, Canary Islands, Spain
关键词
Methionine; Taurine; European sea bass; Liver; Intestine; Oxidative stress; AMINO-ACID REQUIREMENT; TROUT ONCORHYNCHUS-MYKISS; RAINBOW-TROUT; ANTIOXIDANT STATUS; JAPANESE FLOUNDER; REPLACEMENT VALUE; SPARUS-AURATA; INTERMEDIARY METABOLISM; PROTEIN-CONCENTRATE; LIPID-PEROXIDATION;
D O I
10.1016/j.aquaculture.2017.06.017
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
This study aimed to evaluate the effects of dietary methionine (Met) and taurine (Tau) supplementation on growth performance, feed utilization, and oxidative status of European sea bass juveniles. For that purpose, a 12-week growth trial was performed to test four isolipidic (18%) and isonitrogenous (6.7%) practical diets, containing 82% of the protein from plant origin and 18% from fish meal. Diets were formulated to have a Met level below (LMet) or above (HMet) requirements and were supplemented or not with 1% Tau (LMetTau and HMetTau). No dietary Met or Tau effects were observed on growth, feed utilization, and whole-body composition. Increasing dietary Met level led to increased catalase (CAT) and glutathione peroxidase (GPX) activities in the liver and total (tGSH) and reduced (GSH) glutathione in the intestine, while decreasing glutathione reductase (GR) and GPX activities in the intestine. Most of these effects were only observed in fish fed diets not supplemented with Tau. Dietary Tau supplementation decreased intestinal tGSH, GSH and oxidised (GSSH) glutathione content, the activity of GPX both in liver and intestine, and glucose-6-phosphate dehydrogenase (G6PDH) activity in the liver. Dietary Tau supplementation also affected hepatic CAT and intestinal GR activities, but effects were dependent of the dietary Met level. Overall, European sea bass seems to cope well with a plant-protein rich diet without Met or Tau supplementation. Both dietary Met and Tau were shown to modulate fish antioxidant response but without altering the oxidative damage level.
引用
收藏
页码:447 / 454
页数:8
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