Immunomodulatory Dietary Strategies in Aquaculture Systems
Summary
Immunomodulatory dietary strategies involve the inclusion of functional feed additives designed to enhance the immune competence and disease resilience of farmed aquatic species. These approaches draw upon a variety of bioactive compounds including polysaccharides, polyphenols, herb extracts, microbial supplements and nutrient fortifiers. By targeting innate and adaptive immune pathways, such strategies seek to fine-tune the balance between immune activation and homeostasis, increasing resistance to pathogens without compromising growth or welfare. Central to this paradigm are immunostimulants such as β-glucans or modified biopolymers that activate macrophage and complement activity, antioxidants that mitigate oxidative stress, and prebiotic or probiotic agents that modulate gut microbiota and mucosal immunity. Improvements in feed conversion ratio and growth performance often accompany immunological gains, underlining the practical synergy between health and productivity. Beyond individual species, emerging work explores the reuse of agro-industrial by-products as sustainable sources of immunomodulatory agents, with the dual benefit of waste valorisation and environmental stewardship. As global aquaculture expands, such dietary strategies offer a pathway to more resilient, eco-friendly production systems.
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Immunomodulatory Dietary Strategies in Aquaculture Systems publication trend
The graph below shows the total number of articles in immunomodulatory dietary strategies in aquaculture systems across all publications each year (not limited to Nature Index journals).
Technical terms
Immunomodulator: A substance that alters the strength or type of immune response.
β-glucan: A polysaccharide known for its capacity to stimulate innate immune cells.
Lysozyme activity: A measure of enzyme-driven bacterial cell wall degradation as part of non-specific immunity.
Alternative complement pathway: A component of the innate immune system that enhances pathogen clearance without antibody involvement.
Antioxidant enzymes: Proteins such as superoxide dismutase, catalase and glutathione peroxidase that neutralise reactive oxygen species.
Feed conversion ratio (FCR): The efficiency metric indicating the amount of feed required to produce a unit of biomass.
References
- Amine modified sodium alginate: Synthesis, characterization and in vivo evaluation in rainbow trout (Oncorhynchus mykiss). Carbohydrate Polymer Technologies and Applications (2025).
- Dietary artemisinin boosts intestinal immunity and healthy in fat greenling (Hexagrammos otakii). Frontiers in Immunology (2023).
- Gene Expression Study in Gilthead Seabream (Sparus aurata): Effects of Dietary Supplementation with Olive Oil Polyphenols on Immunity, Metabolic, and Oxidative Stress Pathways. International Journal of Molecular Sciences (2024).
- Exploitation of Agro-Industrial Waste as Potential Source of Bioactive Compounds for Aquaculture. Foods (2020).
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