Effects of hydroxy-selenomethionine on performance, innate immune system and antioxidant defense of tambaqui (Colossoma macropomum) exposed to a physical stressor

被引:3
|
作者
Ferreira, Celma Maria [1 ]
Gindri Sinhorin, Valeria Dornelles [2 ]
Fontinhas Netto, Garros do Valle [3 ]
Hoshiba, Marcio Aquio [4 ]
de Abreu, Janessa Sampaio [4 ]
机构
[1] Fed Univ Mato Grosso UFMT, Anim Sci Grad Program, Av Fernando Correa Costa 2367, BR-78060900 Cuiaba, MT, Brazil
[2] Univ Fed Mato Grosso, Inst Nat Human & Social Sci, Environm Sci Grad Program, Integrated Chem Sci Res Labs, Sinop Campus,Av Alexandre Ferronato 1200, BR-78550728 Sinop, MT, Brazil
[3] Adisseo Brasil Nutr Anim, Av Maria Coelho Aguiar 215,Bloco G, BR-05804900 Sao Paulo, SP, Brazil
[4] Fed Univ Mato Grosso UFMT, Fac Agron & Anim Sci, Av Fernando Correa Costa 2367, BR-78060900 Cuiaba, MT, Brazil
关键词
Growth; Oxidative stress; Selenium; Transport; TROUT ONCORHYNCHUS-MYKISS; GROWTH-PERFORMANCE; 2-HYDROXY-4-METHYLSELENOBUTANOIC ACID; SELENIUM NANOPARTICLES; INORGANIC SELENIUM; JUVENILE GROUPER; NILE TILAPIA; DIETARY; SUPPLEMENTATION; GLUTATHIONE;
D O I
10.1016/j.fsi.2021.12.048
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Selenium (Se) is a mineral with natural antioxidant properties that constitutes a number of enzymes with a fundamental role in the immunity and antioxidant systems and may confer a protective role against oxidative stress in fish following exposure to physical stressors. Adopting an integrated approach, this study investigated simultaneously the role of hydroxy-selenomethionine (OH-SeMet) supplementation in performance, hematological parameters, innate immune, antioxidant capacity and tissue Se retention of tambaqui (Colossoma macropomum) and the possible protective role of dietary selenium when fish are exposed to a physical stressor (transport). Juvenile specimens (15.71 +/- 1.90 g) were fed one of five diets: a basal unsupplemented diet (0.0 mg kg 1 Se) or diets supplemented with OH-SeMet to provide 0.3, 0.6, 0.9 and 1.2 mg kg 1 Se of diet for 75 days prior to subjection of fish to transport stress. Dietary supplementation with Se in the form of OH-SeMet for 75 days did not affect the production performance of juvenile tambaqui, but increased innate immunity parameters (oxidative burst) from the Se inclusion level of 0.6 mg kg 1 and induced the activation of the antioxidant defense system (GPX, GSH and GST) especially at the Se inclusion level of 0.9 mg kg 1. In addition, the Se content in the fillet rose significantly, as the OH-SeMet contents in the diet were increased. The stress caused by transport resulted in alterations in hematological parameters, blood protein profile and immune and enzymatic responses in the species. However, Se supplementation at 0.9 mg kg 1 had a positive effect, increasing innate immunity and activating antioxidant defenses (CAT and GPx, especially) after this physical stressor was applied. These results demonstrate that, when submitted to transport stress, juvenile tambaqui use Se stored in the muscle and dietary supplementation with OH-SeMet at 0.9 mg kg 1 improves the innate immunity and antioxidant system parameters of fish after transport. These findings reinforce the need for supplementing hydroxy-selenomethionine in commercial diets for tambaqui to ensure tissue Se reserves as a contingency in cases of stress.
引用
收藏
页码:362 / 369
页数:8
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