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Impact of dietary gallic acid on growth indices and the expression of antioxidant, stress, and immunity-related genes in rainbow trout (Oncorhynchus mykiss)
Abstract
This study investigates the effects of dietary gallic acid (GA) supplementation on growth performance and the expression of genes linked to antioxidant, stress, and immune functions in rainbow trout (Oncorhynchus mykiss). Fish with an average body weight of 2.84 ± 0.25 g were fed diets containing 0 mg/kg (control), 300 mg/kg (G300), 450 mg/kg (G450), and 600 mg/kg (G600) of GA over 60 days. The results revealed significant improvements in growth indices, including weight gain, specific growth rate, and feed conversion ratio, in GA-supplemented groups compared to the control (P<0.05). At the molecular level, GA supplementation significantly upregulated the expression of antioxidant-related genes (SOD, CAT, GPX), stress-related genes (HSP70), and immune-related genes (TNF-α, IL-1β). The G300 group consistently exhibited the most pronounced transcriptional responses, while higher doses (G450 and G600) showed diminished or inconsistent effects. These findings suggest that a dietary inclusion of 300 mg/kg GA optimally enhances fish health and productivity by modulating key molecular pathways. This dosage is recommended as an effective feed additive for improving the performance and resilience of rainbow trout in aquaculture.
Keywords
Supporting Institution
This study did not receive any financial support, grant, or assistance from any public, commercial, or nonprofit funding organization.
Ethical Statement
The experiment was approved by the Van Yuzuncu Yil University Aquatic Vertebrates Local Ethics Committee (protocol no: 2024/04-05) and conducted in accordance with standard ethical guidelines.
References
- Alkan, Z., Karataş, B., & Sepil, A. (2025). Evaluation of global warming effects on juvenile rainbow trout: focus on immunohistochemistry and osmoregulation. Fish Physiology and Biochemistry, 51(1), 1-13. https://doi.org/10.1007/s10695-024-01431-5
- Ciji, A., & Akhtar, M.S. (2021). Stress management in aquaculture: A review of dietary interventions. Reviews in Aquaculture, 13(4), 2190-2247. https://doi.org/10.1111/raq.12565
- das Neves, S.C., da Silva, S.M., Costa, G.K., Correia, E.S., Santos, A.L., da Silva, L.C., & Bicudo, Á.J. (2021). Dietary supplementation with fumaric acid improves growth performance in nile tilapia juveniles. Animals, 12(1), 8. https://doi.org/10.3390/ani12010008
- Duan, Y., Wang, Y., Zhang, J., Sun, Y., & Wang, J. (2018). Dietary effects of succinic acid on the growth, digestive enzymes, immune response and resistance to ammonia stress of Litopenaeus vannamei. Fish & shellfish immunology, 78, 10-17. https://doi.org/10.1016/j.fsi.2018.04.008
- Ferk, F., Chakraborty, A., Jäger, W., Kundi, M., Bichler, J., Mišík, M., Wagner, K. H., Grasl-Kraupp, B., Sagmeister, S., Haidinger, G., Hoelzl, C., Nersesyan, A., Dušinská, M., Simić, T., & Knasmüller, S. (2011). Potent protection of gallic acid against DNA oxidation: results of human and animal experiments. Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 715(1 2), 61 71. https://doi.org/10.1016/j.mrfmmm.2011.07.010
- Ghafarifarsani, H., Hoseinifar, S.H., Adorian, T.J., Ferrigolo, F.R.G., Raissy, M., & Van Doan, H. (2021). The effects of combined inclusion of Malvae sylvestris, Origanum vulgare, and Allium hirtifolium Boiss. for common carp (Cyprinus carpio) diet: Growth performance, antioxidant defense, and immunological parameters. Fish & Shellfish Immunology, 119, 670-677. https://doi.org/10.1016/j.fsi.2021.10.014
- Ghafarifarsani, H., Hoseinifar, S.H., Adhami, B., Rohani, M.F., & Van Doan, H. (2023). Dietary gallic acid influences serum enzymatic parameters and immunological responses in Cyprinus carpio exposed to crowding stress. Aquaculture Reports, 30, 101630. https://doi.org/10.1016/j.aqrep.2023.101630
- Hadidi, M., Liñán-Atero, R., Tarahi, M., Christodoulou, M.C., & Aghababaei, F. (2024). The potential health benefits of gallic acid: Therapeutic and food applications. Antioxidants, 13(8), 1001. https://doi.org/10.3390/antiox13081001
Details
Primary Language
English
Subjects
Pisciculture
Journal Section
Research Article
Authors
Boran Karataş
*
0000-0003-4353-1293
Türkiye
Publication Date
March 8, 2025
Submission Date
December 19, 2024
Acceptance Date
January 14, 2025
Published in Issue
Year 1970 Volume: 42 Number: 1
APA
Karataş, B. (2025). Impact of dietary gallic acid on growth indices and the expression of antioxidant, stress, and immunity-related genes in rainbow trout (Oncorhynchus mykiss). Ege Journal of Fisheries and Aquatic Sciences, 42(1), 15-20. https://doi.org/10.12714/egejfas.42.1.02