| A review on approaches toward prevention of oxidative stress in intensified aquaculture |
| Paper ID : 1013-ICIAQUA |
| Authors |
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Majid Khanzadeh *1, Seyed Hossein Hoseinifar2 1Animal Biological Product Research Group, Academic Center for Education, Culture and Research (ACECR), Tehran,Tehran Organization, Iran 2Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran |
| Abstract |
| Intensified aquaculture systems can lead to increased oxidative stress in aquatic organisms. Several approaches have been investigated,including antioxidant supplementation,dietary manipulation,water quality management,genetic selection,probiotics and prebiotics.Oxidative stress occurs when there is an imbalance between the production of reactive oxygen species (ROS) and the antioxidant defense mechanisms.Supplementation of natural antioxidants derived from plant sources,such as vitamins C and E, or synthetic antioxidants like astaxanthin,have demonstrated enhanced antioxidant defense and improved growth performance.Additionally,dietary manipulations,such as adjusting the ratio of dietary antioxidants and prooxidants,can alleviate oxidative stress by maintaining a balanced redox status.Water quality management is another key aspect in preventing oxidative stress.Maintaining optimal water quality parameters,such as temperature,pH,dissolved oxygen,and ammonia levels,helps minimize oxidative damage in aquatic organisms.Genetic selection for oxidative stress tolerance is an emerging approach in aquaculture. Identifying genetic markers associated with oxidative stress resistance and incorporating them into breeding programs allows for the production of stress-resistant stocks. By enhancing the gut health of aquatic organisms, probiotics can reduce oxidative stress. Several studies have demonstrated the potential of probiotic supplementation in reducing ROS production, increasing antioxidant enzyme activity, and improving growth performance in various aquaculture species. Prebiotics are non-digestible carbohydrates that promote the growth and activity of beneficial bacteria in the gut. They serve as a substrate for the growth of probiotics, thereby enhancing their beneficial effects.By promoting a healthy gut microbiota, prebiotics can contribute to the prevention of oxidative stress.Further research and technological advancements are needed to optimize these approaches and ensure their practical application in commercial aquaculture operations. |
| Keywords |
| Oxidative stress, Antioxidant, Intensified aquaculture |
| Status: Abstract Accepted (Poster Presentation) |