Performance and fillet traits of rainbow trout (Oncorhynchus mykiss) fed different levels of Hermetia illucens meal in a low-tech aquaponic system

Bordignon, Francesco; Gasco, Laura; Birolo, Marco; Trocino, A.; Caimi, Christian; Ballarin, Cristina; Bortoletti, Martina; Nicoletto, Carlo; Maucieri, Carmelo; Xiccato, Gerolamo

doi:10.1016/j.aquaculture.2021.737279

Cited by 15 publications

(15 citation statements)

References 61 publications

(91 reference statements)

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“…[209][210][211] The number of studies assessing insect-derived meals and oils in aquafeeds has been growing exponentially in the last 10 years. Trials mainly investigated the stock performance and nutrient digestibility 182,184,[212][213][214][215][216][217][218][219][220][221] and the impact on final product quality. 222,223 The impact of insect-derived products on fish heath status and microbiota composition is an emerging topic of interest.…”

Section: Insectsmentioning

confidence: 99%

Towards achieving circularity and sustainability in feeds for farmed blue foods

Colombo

Roy

Mráz

et al. 2022

Reviews in Aquaculture

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The aims of this review are to describe the role of 'blue-food production' (animals, plants and algae harvested from freshwater and marine environments) within a circular bioeconomy, discuss how such a framework can help the sustainability and resilience of aquaculture and to summarise key examples of novel nutrient sources that are emerging in the field of fed-aquaculture species. Aquaculture now provides >50% of the global seafood supply, a share that is expected to increase to at least 60% within the next decade.Aquaculture is an important tool for reducing resource consumption in global protein production and increasing resilience to climate change and other global disruptions (i.e. pandemics, geo-political instability). Importantly, blue foods also provide essential nutrition for a growing human population. Blue foods are helping to help the global goal of 'zero hunger' (United Nation's Sustainable Development Goal 2) while reducing the dependency on finite natural resources but further refinement and new solutions are needed to make the industry more 'circular' and sustainable, particularly with respect to sourcing raw materials for aquafeeds. This review describes the feed resources that are available or may be created within a circular bioeconomy framework, their role within the framework and in aquaculture and ultimately, how these resources contribute to de-risking and establishing a resilient aquaculture production chain.

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Section: Insectsmentioning

confidence: 99%

Towards achieving circularity and sustainability in feeds for farmed blue foods

Colombo

Roy

Mráz

et al. 2022

Reviews in Aquaculture

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“…From an environmental point of view and according to Bordignon et al, (2022), high density stocks of fish tend to determine a lower environmental impact per kg for an increase in fish production, as it regards global warming, cumulative energy demand, and freshwater ecotoxicity [ 226 ]. Replacing conventional energy sources with renewable sources, such as solar energy from photovoltaic panels, can significantly reduce the environmental impact resulting from electricity use [ 226 ]. Only 3% of the water of traditional raceway aquaculture, which is commonly applied in rainbow trout farming, is used in aquaponics, resulting in significantly reduced demands for water [ 222 ].…”

Section: The Potential Of Rainbow Trout Farming In Aquaponicsmentioning

confidence: 99%

“…Thus, according to Addler et al (2000), the integration of RAS with hydroponic plant cultivation can bring profit by reducing water use and significantly reducing the discharge of unwanted nutrients into the environment [ 222 ]. Nevertheless, the effects of water depletion should be carefully assessed from the moment of extraction of the raw materials to the gate of the farm (from production to consumption) [ 226 ]. For example, an incubator can significantly increase the water consumption required to produce fish [ 226 ].…”

Section: The Potential Of Rainbow Trout Farming In Aquaponicsmentioning

confidence: 99%

“…Nevertheless, the effects of water depletion should be carefully assessed from the moment of extraction of the raw materials to the gate of the farm (from production to consumption) [ 226 ]. For example, an incubator can significantly increase the water consumption required to produce fish [ 226 ].…”

Section: The Potential Of Rainbow Trout Farming In Aquaponicsmentioning

confidence: 99%

“…Aquaponics is becoming a cost-effective and environmentally friendly system that will encourage classical aquaculture facilities to adapt to the environmental management of their wastewater [ 231 , 232 ]. The breeding of rainbow trout in an aquaponic system with water recirculation is a promising alternative to common flow systems, especially in view of minimizing the depletion of water resources [ 226 ].…”

Section: The Potential Of Rainbow Trout Farming In Aquaponicsmentioning

confidence: 99%

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Aquaponics as a Promising Strategy to Mitigate Impacts of Climate Change on Rainbow Trout Culture

Vasdravanidis

Alvanou

Lattos

et al. 2022

Animals

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The impact of climate change on both terrestrial and aquatic ecosystems tends to become more progressively pronounced and devastating over the years. The sector of aquaculture is severely affected by natural abiotic factors, on account of climate change, that lead to various undesirable phenomena, including aquatic species mortalities and decreased productivity owing to oxidative and thermal stress of the reared organisms. Novel innovative technologies, such as aquaponics that are based on the co-cultivation of freshwater fish with plants in a sustainable manner under the context of controlled abiotic factors, represent a promising tool for mitigating the effect of climate change on reared fish. The rainbow trout (Oncorhynchus mykiss) constitutes one of the major freshwater-reared fish species, contributing to the national economies of numerous countries, and more specifically, to regional development, supporting mountainous areas of low productivity. However, it is highly vulnerable to climate change effects, mainly due to the concrete raceways, in which it is reared, that are constructed on the flow-through of rivers and are, therefore, dependent on water’s physical properties. The current review study evaluates the suitability, progress, and challenges of developing innovative and sustainable aquaponic systems to rear rainbow trout in combination with the cultivation of plants. Although not commercially developed to a great extent yet, research has shown that the rainbow trout is a valuable experimental model for aquaponics that may be also commercially exploited in the future. In particular, abiotic factors required in rainbow trout farming along, with the high protein proportion required in the ratios due to the strict carnivorous feeding behavior, result in high nitrate production that can be utilized by plants as a source of nitrogen in an aquaponic system. Intensive farming of rainbow trout in aquaponic systems can be controlled using digital monitoring of the system parameters, mitigating the obstacles originating from extreme temperature fluctuations.

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Plant nutritional value of aquaculture water produced by feeding Nile tilapia (Oreochromis niloticus) alternative protein diets: A lettuce and basil case study

Jones,

Shaw,

Chen

et al. 2023

Plants People Planet

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Societal Impact StatementRefining circular multitrophic food production methods, which integrate plant, fish, and insect outputs, is imperative for environmental sustainability. Our findings suggest that the right protein choices in fish feed, like black soldier fly meal and poultry meal, can notably enhance the nutrient profile of fish waste water. This, in turn, is conducive for hydroponic cultivation, enhancing the nutritional attributes of plants like basil and lettuce. As we reduce environmental impact and optimize resource use, it is evident that our food ecosystems are deeply intertwined. Harnessing these synergies could redefine our approach to food production, paving the way for a more sustainable global future.Summary Optimization of nutrient use efficiencies in circular multitrophic food production systems (i.e., plant, fish, and insect production) is crucial for sustainability. This study tested how protein ingredient choice in fish feed influences the plant nutritional value of the fish waste water when used for hydroponic crop production. Waste water samples were obtained from recirculating aquaculture systems (RAS) in which Nile tilapia (Oreochromis niloticus) were fed different single protein source diets—black soldier fly meal (BSFM), poultry by‐product meal (PM), poultry blood meal (PBM), and fish meal. Water was analyzed for plant nutrients and used for lettuce and basil cultivation to evaluate their suitability for hydroponic crop production—viz. yield, mineral nutrient, and selected secondary metabolite levels. BSFM RAS water had the highest concentrations of K, Mg, and micronutrients (Cu, Mn, Mo, Zn) of the RAS waters, whereas PM RAS water contained the highest P concentration and had a mean pH of 6.5 closer to the optimum pH for hydroponic plants. These RAS waters consequently lead to the highest yields in basil and lettuce indicating the importance of the aforementioned factors. From a plant production perspective, BSFM appears promising as a protein source in fish feeds for aquaponics. Usage of RAS waters for plant production helps reduce (i) environmental impact of RAS water and (ii) resource input in plant production. Longer term RAS trials should be conducted to determine the maximum nutrient concentrations achievable during fish production with diets including BSFM as the main protein source.

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Performance and fillet traits of rainbow trout (Oncorhynchus mykiss) fed different levels of Hermetia illucens meal in a low-tech aquaponic system

Cited by 15 publications

References 61 publications

Towards achieving circularity and sustainability in feeds for farmed blue foods

Towards achieving circularity and sustainability in feeds for farmed blue foods

Aquaponics as a Promising Strategy to Mitigate Impacts of Climate Change on Rainbow Trout Culture

Plant nutritional value of aquaculture water produced by feeding Nile tilapia (Oreochromis niloticus) alternative protein diets: A lettuce and basil case study

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