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Modulation of growth, blood physiology, disease resistance, molecular immune-antioxidant gene expression, and tissue integrity in european seabass (Dicentrarchus labrax) fed Moringa oleifera flower-enriched diets

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This study investigates the effects of Moringa oleifera flower (MOF) supplementation on the growth and health of European seabass (Dicentrarchus labrax). A 70-day feeding trial demonstrated that diets enriched with MOF significantly improved growth performance, immune response, and tissue integrity, while enhancing antioxidant capacity and reducing oxidative damage. Notably, fish receiving MOF at 2 g/kg exhibited superior survival rates against Vibrio alginolyticus challenges.
Modulation of growth, blood physiology, disease resistance, molecular immune-antioxidant gene expression, and tissue integrity in european seabass (Dicentrarchus labrax) fed Moringa oleifera flower-enriched diets

The recent study on the effects of Moringa oleifera flower (MOF) supplementation in European seabass (Dicentrarchus labrax) explores the promising potential of herbal-based additives in aquaculture. As the industry grapples with the need for sustainable practices and reduced reliance on chemicals, this research aligns with a growing body of literature that highlights the efficacy of botanical alternatives. The findings, which demonstrate significant improvements in growth performance, immune function, and overall health of seabass fed MOF-enriched diets, underline the importance of integrating natural solutions into aquaculture. This trend is not only vital for enhancing fish health but also resonates with broader environmental goals, similar to the discussions found in articles like Direct ink writing of MXene ink on polyimide substrate for the detection of microplastics, where innovative approaches to tackle environmental concerns are being explored.

The rigorous 70-day feeding trial reported in the study offers empirical evidence that suggests a dietary inclusion of 2 g/kg of MOF can significantly bolster the physiological status of seabass. Notably, the observed elevations in hematological parameters and improvements in metabolic profiles are indicative of a robust immune response, which is essential for combating diseases such as Vibrio alginolyticus. These findings are timely, as aquaculture faces increasing challenges from pathogens that threaten fish health and, consequently, the sustainability of fish farming practices. The implications of this research extend beyond individual fish health, touching on critical aspects of food security and environmental stewardship.

Moreover, the broader significance of embracing herbal additives like MOF lies in their potential to transform aquaculture into a more sustainable industry. As highlighted in the study, the reduction of oxidative damage and the enhancement of antioxidant defense mechanisms can lead to healthier fish populations, which is paramount in a world increasingly aware of its environmental footprint. This resonates with the ongoing efforts to utilize technology and innovative practices in ocean management, as seen in articles such as On the phenomena-oriented validation of spatial neural-network based surface wind downscaling over the Arctic seas, where leveraging advanced tools can lead to improved oceanic health and management strategies.

As we reflect on these findings, it is crucial to consider the potential for further research in this field. The study sets a foundation for exploring other botanical additives and their effects on various aquaculture species. This is particularly relevant as the industry seeks to diversify feed options and enhance resilience against climate-related challenges. The ongoing exploration of natural solutions could lead to a paradigm shift in aquaculture, moving towards practices that not only prioritize fish health but also align with broader ecological objectives.

Looking ahead, the integration of herbal-based additives like MOF into aquaculture practices prompts essential questions about the future of fish farming. Will the adoption of these natural solutions pave the way for a more sustainable aquaculture industry that prioritizes both health and environmental integrity? As we continue to witness advancements in both scientific research and innovative practices, the potential for transformative change in aquaculture is within reach, making it a critical area to watch in the coming years.

Herbal-based additives are now recognized as effective tools of growth and immunity in aquaculture. Seeking these botanical alternatives is a practical necessity for sustainable farming and chemical reduction. Moringa oleifera flowers (MOF), in particular, offer significant potential due to their established history in treating inflammation and respiratory conditions. However, the potential of these additives to enhance growth, physiological status, and tissue health in European seabass (Dicentrarchus labrax) has not yet been evaluated. A 70-day feeding trial was conducted to evaluate the effects of graded dietary levels of M. oleifera flower (MOF) on the growth performance, immune- and antioxidant-related genes, physio-metabolic profile, and redox homeostasis of European seabass and resistance to Vibrio alginolyticus challenge. Fish were allocated to four experimental groups and fed either a basal diet (control, MOF0) or the basal diet supplemented with MOF at concentrations of 1 (MOF1), 2 (MOF2), and 3 (MOF3) g/kg. Dietary MOF supplementation significantly enhanced growth indices and the whole-body proximate composition of D. labrax compared to the control group (P< 0.05). Furthermore, fish fed MOF-enriched diets exhibited significant elevations in hematological parameters, including (hemoglobin, RBCs, MCH, MCHC, and WBC) counts (P< 0.05). Metabolic and antioxidant profiles were similarly improved, characterized by a significant increase in total serum protein and a concomitant reduction in glucose, cholesterol, and hepatic enzyme activities (AST, ALT, and ALP) (P< 0.05). Dietary MOF inclusion mitigated oxidative damage by decreasing MDA levels while simultaneously enhancing the enzymatic antioxidant defense system (SOD, CAT, and GPx) (P< 0.05). These biochemical improvements were supported by molecular data showing a significant upregulation of growth genes (IGF-I and GH), pro-inflammatory and complement system genes (IL-1β and C3), and antioxidant enzymes (SOD and GPx) (P< 0.05). MOF inclusion in the diets of D. labrax supported systemic tissue health by improving the structural integrity of the intestinal mucosa and preventing degenerative changes in the hepatic parenchyma and muscle fibers. These findings underscore the multi-tissue cytoprotective efficacy of MOF in D. labrax. Following the V. alginolyticus challenge, fish in the MOF2 and MOF3 groups exhibited significantly higher survival rates and enhanced pathogen resistance compared to the MOF0 and MOF1 cohorts (P< 0.05). Consequently, our data suggest that a dietary inclusion of 2 g/kg of M. oleifera flowers represents an effective strategy for optimizing growth performance, immunocompetence, and antioxidant capacity in European seabass.

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#ocean data#data visualization#ecosystem health#Moringa oleifera#European seabass#Dicentrarchus labrax#growth performance#immunity#antioxidant capacity#dietary supplementation#oxidative damage#immune genes#tissue integrity#Vibrio alginolyticus#hematological parameters#pro-inflammatory genes#metabolic profile#redox homeostasis#growth genes#serum protein