Exploring sustainable alternatives in aquaculture feeding: The role of insects

Aquaculture Reports, Год журнала: 2024, Номер 37, С. 102228 - 102228

Опубликована: Июль 13, 2024

The aquaculture sector faces uncertainty due to environmental changes, economic factors, and availability of food resources. Conventional aquatic feeds heavily depend on fishmeal. This results in sustainability challenges overexploitation wild fish stocks, rising costs, impacts, which has driven the search for innovative sustainable alternatives, such as insects. European Union legislation evolved allow use certain insect species aquafeeds, favoring market access approval additional species. However, regulations still need be standardized across countries substrates approved feed clearly defined, since nutritional composition insects diet. These ingredients have high potential replace fishmeal feeds, although, present regarding optimal growth digestibility, specially chitin composition, that overcome. its derivatives may also positive effects prebiotic immunomodulator. insect-based protein sources several benefits, efficient nutrient utilization, short maturation periods, profitability, addressing associated with conventional aquafeed ingredients. Scientific studies indicate improve flesh quality, strengthen immune system, reduce disease susceptibility farmed fish, promoting productive systems. integration alternative can offer a promising path towards environmentally friendly Based research available this topic, review aimed evaluate real using raw-materials their growth, immunological response, resistance, safety fish.

Язык: Английский

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Insect-based fish feed in decoupled aquaponic systems: Effect on lettuce production and resource use

PLoS ONE, Год журнала: 2024, Номер 19(1), С. e0295811 - e0295811

Опубликована: Янв. 19, 2024

The utilisation of insect meal-based fish feed as a substitute for conventional is considered promising innovative alternative to boost circularity in aquaculture and aquaponics. Basic research on its use aquaponics limited. So far, no reports the effects waste water, derived from recirculating system using Black Soldier Fly (BSF) diets, were available growth performance lettuce. Therefore, this study aimed compare effect reusing water tilapia culture (as base nutrient solution) fed with diet (FM) BSF resource lettuce decoupled aquaponic systems. A hydroponics solution (HP) served control, inorganic fertilisers added all solutions reach comparable target concentrations. experiment was conducted controlled climate chamber nine separate units, three per treatment. Lettuce fresh dry weight, number leaves, relative leaf chlorophyll concentration, consumption, usage measured. Micro- macronutrients monitored time series. Similar yield seen treatments, significant values. Water plant also similar between while amount total fertiliser required 32% lower FM compared HP. Higher sodium concentrations found results confirm that BSF-based FM-based negative growth. Additionally, might be beneficial intensive, professional applications due concentration solution.

Язык: Английский

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Flying toward a plastic-free world: Can Drosophila serve as a model organism to develop new strategies of plastic waste management?

The Science of The Total Environment, Год журнала: 2024, Номер 914, С. 169942 - 169942

Опубликована: Янв. 8, 2024

The last century was dominated by the widespread use of plastics, both in terms invention and increased usage. environmental challenge we currently face is not just about reducing plastic usage but finding new ways to manage waste. Recycling growing remains a small part solution. There increasing focus on studying organisms processes that can break down offering modern approach addressing crisis. Here, provide an overview associated with plastics biodegradation, explore potential harnessing integrating their genetic biochemical features into single organism, such as Drosophila melanogaster. remarkable engineering microbiota manipulation tools available for this organism suggest multiple could be amalgamated modeled fruit fly. We outline feasible gut microbiome engraftment strategies develop class plastic-degrading discuss benefits limitations developing engineered melanogaster strains.

Язык: Английский

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Valorisation of industrial food waste into sustainable aquaculture feeds

Future Foods, Год журнала: 2023, Номер 7, С. 100240 - 100240

Опубликована: Июнь 1, 2023

The increasing global population has put enormous stresses on food security. Aquaculture is a major source of fish and considered one the key pillars our supply. aquaculture production led to surge in demand for fishmeal oil – ingredients feeds obtained from finite marine resources. Decreasing dependence resources could improve sustainability farmed fishes. One strategy replace with alternative proteins. This review aims provide comprehensive overview how industrial wastes can be valorised into sustainable protein as replacement fishmeal. direct substitution challenges associated it will first discussed. Next, section devoted repurposing waste insect bioconversion high value source. A special mention use encapsulated micronutrients probiotics functionalised also reviewed. concludes by summarizing existing regulations aquaculture, its public perception, future perspectives converting feed circular economy.

Язык: Английский

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Reasons to Be Skeptical about Sentience and Pain in Fishes and Aquatic Invertebrates

Reviews in Fisheries Science & Aquaculture, Год журнала: 2023, Номер 32(1), С. 127 - 150

Опубликована: Окт. 4, 2023

The welfare of fishes and aquatic invertebrates is important, several jurisdictions have included these taxa under regulation in recent years. Regulation requires use scientifically validated criteria. This why applying Mertonian skepticism toward claims for sentience pain sound prudent, particularly when those are used to justify legislation regulating the taxa. Enacting without strong scientific evidence a societal political choice that risks creating interpretational problems as well major policy challenges, including potential generate significant unintended consequences. In contrast, more rigorous science-based approach organisms based on verified, measurable endpoints likely result "win-win" scenarios minimize risk negative impacts all stakeholders, fish invertebrates. authors identify supporters animal welfare, emphasize this issue not about choosing between no invertebrates, but rather ensure important decisions their robust evidence. These ten reasons delivered spirit organized orient legislators, decision makers community, alert them need maintain high evidential bar any operational indicators animals, mandated by legislation. Moving forward, maintaining highest standards vitally order protect only also global food security humans.

Язык: Английский

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The impact of diets containing Hermetia illucens meal on the growth, intestinal health, and microbiota of gilthead seabream (Sparus aurata)

Fish Physiology and Biochemistry, Год журнала: 2024, Номер 50(3), С. 1003 - 1024

Опубликована: Фев. 22, 2024

Abstract The present study investigated the effect of replacing fishmeal (FM) with insect meal Hermetia illucens (HI) in diet Sparus aurata farmed inshore on growth, gut health, and microbiota composition. Two isolipidic (18% as fed) isoproteic (42% diets were tested at farm scale: a control without HI an experimental 11% FM. At end 25-week feeding trial, final body weight, specific growth rate, feed conversion hepatosomatic index not affected by diet. Gross morphology gastrointestinal tract liver was unchanged showed no obvious signs inflammation. High-throughput sequencing 16S rRNA gene amplicons (MiSeq platform, Illumina) used to characterize microbial community profile that Proteobacteria, Fusobacteria, Firmicutes dominant phyla gilthead seabream, regardless Dietary inclusion altered significantly decreasing abundance Cetobacterium increasing relative Oceanobacillus Paenibacillus genera. Our results clearly indicate alternative animal protein source positively affects seabream beneficial genera, thereby improving health maintaining performance S. from coastal farms.

Язык: Английский

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Fish Responses to Alternative Feeding Ingredients under Abiotic Chronic Stress

Animals, Год журнала: 2024, Номер 14(5), С. 765 - 765

Опубликована: Фев. 29, 2024

Aquaculture has become one of the most attractive food production activities as it provides high-quality protein for growing human population. However, abiotic chronic stress fish in intensive farming leads to a detrimental condition that affects their health and somatic growth, comprising productive performance. This work aims comprehensively review impact alternative novel dietary sources on metabolism, antioxidative capacity under environmental/abiotic stressors. The documental research indicates ingredients from rendered animal by-products, insects, bacteria single-cell proteins, fungal organisms (e.g., yeast, filamentous fungus, mushrooms) benefit A set responses allows health, survival remain unaffected by feeding with during environmental stress. Those stimulate enzymes such catalase, glutathione peroxidase, selenoproteins counteract ROS effects. In addition, humoral immune system promotes immunoglobulin (IgM) cortisol plasmatic reduction. Further investigation must be carried out establish specific effect species. Additionally, mixture pre-treatment hydrolysates, solid fermentations, metabolite extraction potentialize beneficial effects diets chronically stressed fish.

Язык: Английский

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Insect feed in sustainable crustacean aquaculture

Journal of Insects as Food and Feed, Год журнала: 2023, Номер 9(9), С. 1115 - 1138

Опубликована: Апрель 13, 2023

Aquaculture is a growing global food production sector that aims to meet the increasing demand for dietary protein. Crustaceans are an important and predominantly high-priced aquaculture segment could support transfer of sustainable new technologies other sectors. Areas interest include disease management compound feeds, both which have potential improve profitability sustainability aquaculture. Modern feeds largely composed fishmeal and/or terrestrial plant materials, unsustainable, leading depletion finite resources. Insects promising protein-rich alternative can reduce environmental footprint aquafeeds crustacean First research data shown insect meal has favourable nutritional composition with positive health effects, environmentally strong economic potential, particularly supporting circular economy by valorising otherwise unused side-streams. In this article, we discuss current state highlight benefits compared today’s in terms growth-promoting properties as well benefits. We then consider molecular mechanisms confer immunity resistance show how thus consumer health. Next, assess farming, legal framework insect-based acceptance issues. Lastly, identify gaps, socioeconomic considerations market.

Язык: Английский

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Hermetia illucens larvae meal as an alternative protein source in practical diets for gilthead sea bream (Sparus aurata): A study on growth, plasma biochemistry and gut microbiota

Aquaculture, Год журнала: 2023, Номер 578, С. 740093 - 740093

Опубликована: Сен. 12, 2023

The effects of dietary Hermetia illucens (HI) larvae meal on growth, plasma biochemistry and gut microbiota was tested in gilthead sea bream. Four isonitrogenous isolipidic extruded diets (50% protein; 14% lipid) with different levels HI larva (0% CTRL, 5% HI5, 10% HI10, 15% HI15) partial substitution to fish (FM) were administered triplicate groups over 113 days. Diets designed partially replace FM, using FM level for practical application. No significant differences (p > 0.05) observed terms final body weight, specific growth rate (SGR), feed intake (FI), conversion (FCR) as well efficiency parameters such protein ratio (PER), gross (GPE), lipid (GLE). At the end trial there not intake, efficiency. Among 20 analyzed, inclusion reduced iron (Fe), potassium (K), creatinine (CREA), aspartate aminotransferase (AST), alanine amino transferase (ALT), creatine kinase (CK), alkaline phosphatase (ALP), lactate dehydrogenase (LDH). reduction AST, ALT ALP might suggest a potential beneficial role liver integrity functionality. Concerning microbiome (GM) layout, able induce shift GM structure at any considered compared control diet increasing abundance Bacillaceae (mainly Bacillus Oceanobacillus) Paenibacillaceae (Paenibacillus). Taxa that can be involved chitin degradation has been recently recognized novel probiotics aquaculture. In conclusion, results utilization indicate successfully incorporated up aquafeed without negative Beyond being valid alternative source replacement this species, it displays health functional properties already low level.

Язык: Английский

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Influence of Hermetia illucens Larvae Meal Dietary Inclusion on Growth Performance, Gut Histological Traits and Stress Parameters in Sparus aurata

Animals, Год журнала: 2023, Номер 13(3), С. 339 - 339

Опубликована: Янв. 18, 2023

This study provided new data and knowledge on the potential use of Hermetia illucens meal (HIM) as a sustainable ingredient for Sparus aurata diet. The effect HIM dietary inclusion fish growth performance, stress indicators gut histology was studied. For 131 days, 312 were fed basal diet containing fishmeal animal protein source, three diets 25%, 35% 50% partial replacement fishmeal. main findings indicated that can be replaced by up to 110 g/kg substitution (35% in diet) without negative effects parameters or histological traits posterior tract, with positive (p < 0.05) morphometric characteristics anterior tract. At same time, results showed at level caused histopathological alterations tract seabream. In conclusion, this preliminary suggested HIM35 most tolerated showing best conditions, fewer signs inflammation, well good nutritional health status.

Язык: Английский

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