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Article

Dietary Natural Plant Extracts Can Promote Growth and Modulate Oxidative Status of Senegalese Sole Postlarvae under Standard/Challenge Conditions

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CCMAR, Centro de Ciências do Mar, Campus de Gambelas, Universidade do Algarve, 8005-139 Faro, Portugal
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SPAROS Lda., Área Empresarial de Marim, Lote C, 8700-221 Olhão, Portugal
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CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal
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ICBAS, Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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CESAM, Centro de Estudos do Ambiente e do Mar, Departamento de Biologia, Universidade de Aveiro, 3810-193 Aveiro, Portugal
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IFAPA, Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón, S/N, 11500 El Puerto de Santa María, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Alessia Giannetto
Animals 2021, 11(5), 1398; https://doi.org/10.3390/ani11051398
Received: 26 April 2021 / Revised: 7 May 2021 / Accepted: 11 May 2021 / Published: 14 May 2021
(This article belongs to the Special Issue Stress Physiology of Farmed Fish)
Oxidative stress has a direct impact on the welfare of fish, affecting growth performance and health status. Natural plant extracts present a high antioxidant capacity, due to a diversity and abundant content of polyphenols. Thus, the aim of this work was to identify if plant extracts, such as curcumin, green tea, and grape seeds, can promote oxidative status, and ultimately, enhance the growth and physiological stress response of postlarvae. Our results showed that plant extracts can improve the growth and oxidative status of the fish. Moreover, they may help fish to cope under stressful conditions. Dietary formulations with natural supplements may be a viable strategy to improve fish robustness during early life stages, and can therefore contribute to the development of aquafeeds and promote the sustainability of aquaculture production.
Plant extracts are known for their high content and diversity of polyphenols, which can improve fish oxidative status. A growth trial with Senegalese sole postlarvae (45 days after hatching) fed with one of four experimental diets—control (CTRL), and supplemented with curcumin (CC), green tea (GT), and grape seed (GS) extracts—was performed to assess if supplementation could improve growth performance and oxidative status. At the end of the growth trial, postlarvae were submitted to a thermal stress to assess their robustness. Sole growth was improved by CC and GS diets when compared to those fed the CTRL. CC and CTRL postlarvae presented the lowest oxidative damage (lipid peroxidation and protein carbonylation values). Stress-related biomarkers (heat shock protein 70 and glutathione-S-transferase) decreased in CC fish compared to those fed the CTRL diet, which might be due to a direct antioxidant capacity. In contrast, oxidative damage increased in GT and GS sole reared in standard conditions. However, after a thermal stress, GT and GS diets prevented the increase of protein carbonylation content and the decrease of antioxidant glutathione, depending on exposure time. Overall, dietary supplementation with natural extracts modulated oxidative status and stress response after a short/long-term exposure to temperature. View Full-Text
Keywords: plant extracts; nutrition; Senegalese sole; oxidative stress; growth performance plant extracts; nutrition; Senegalese sole; oxidative stress; growth performance
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MDPI and ACS Style

Xavier, M.J.; Conceição, L.E.C.; Valente, L.M.P.; Colen, R.; Rodrigues, A.C.M.; Rocha, R.J.M.; Custódio, L.; Carballo, C.; Manchado, M.; Engrola, S. Dietary Natural Plant Extracts Can Promote Growth and Modulate Oxidative Status of Senegalese Sole Postlarvae under Standard/Challenge Conditions. Animals 2021, 11, 1398. https://doi.org/10.3390/ani11051398

AMA Style

Xavier MJ, Conceição LEC, Valente LMP, Colen R, Rodrigues ACM, Rocha RJM, Custódio L, Carballo C, Manchado M, Engrola S. Dietary Natural Plant Extracts Can Promote Growth and Modulate Oxidative Status of Senegalese Sole Postlarvae under Standard/Challenge Conditions. Animals. 2021; 11(5):1398. https://doi.org/10.3390/ani11051398

Chicago/Turabian Style

Xavier, Maria J., Luís E.C. Conceição, Luisa M.P. Valente, Rita Colen, Andreia C.M. Rodrigues, Rui J.M. Rocha, Luísa Custódio, Carlos Carballo, Manuel Manchado, and Sofia Engrola. 2021. "Dietary Natural Plant Extracts Can Promote Growth and Modulate Oxidative Status of Senegalese Sole Postlarvae under Standard/Challenge Conditions" Animals 11, no. 5: 1398. https://doi.org/10.3390/ani11051398

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