Black soldier fly larvae (Hermetia illucens; BSFL) can convert organic wastes into a nutrient-rich biomass suitable in animal feed, which could be way to achieve more sustainable production of food. However, little is known about how the diet fed BSFL affects their nutritional value, especially fatty acid composition. In this study, were 11 diets based on four different waste sources (mussels, bread, fish and food waste). Fatty proximate composition (dry matter, crude fat, protein ash)...

Apparent digestibility coefficients (ADCs) for four protein-rich alternative feed ingredients, intact baker's yeast (Saccharomyces cerevisiae), extracted (S. zygomycetes (Rhizopus oryzae) and blue mussel (Mytilus edulis), were determined Arctic charr (Salvelinus alpinus) Eurasian perch (Perca fluviatilis). Diets contained 30% of test ADCs compared to a reference diet containing fish meal. For charr, dry matter (DM, 71–99%), sum amino acids (SAA, 84–99%) gross energy (70–99%) significantly...

Arctic charr (Salvelinus alpinus) were fed for 99 days on experimental diets with 40% of fish meal replaced, a crude protein basis, intact yeast (Saccharomyces cerevisiae) (ISC), extracted (ESC), Rhizopus oryzae fungus (RHO) or de-shelled blue mussels (Mytilus edulis) (MYE). The evaluated growth performance, nutrient digestibility and intestinal function. Growth retention sum amino acids not affected in ISC MYE compared those the reference (REF) diet. However, diet displayed decreased...

Abstract The objective of the present study was to investigate optimal dietary protein requirement and effect varying levels on growth health juvenile, wild‐caught Atlantic wolffish, Anarhichas lupus , a promising candidate for cold‐water aquaculture diversification. Six iso‐energetic (ca. 18.3 MJ kg −1 ), fish meal‐based experimental diets were formulated with crude ranging from 35% 60%, graded increments 5% in 12‐week feeding trial recirculating system (RAS). Weight gain, specific rate...

The growing aquaculture industry has an increasing demand for novel, sustainably produced protein sources aquafeed. This study aimed to determine the apparent digestibility (AD%), pellet quality, and score of four novel fungal proteins in rainbow trout (Oncorhynchus mykiss), namely, PEKILO® (PEK) derived from Paecilomyces variotii, Aspergillus oryzae (AO), Rhizopus oligosporus (RO), delemar (RD). All fungi were grown on various side-streams, such as beet vinasse, thin stillage, whole...

Abstract The aims of this study were to investigate the effect temperature, time and stirring on changes in protein degree hydrolysis (DH), free amino acids (FAA), lipid oxidation total volatile basic nitrogen (TVB-N) during ensilaging herring ( Clupea harengus ) filleting co-products. Results showed that temperature time, some cases interaction between these two factors, significantly influenced all studied responses. Increasing from 17 37 °C 3 7 days, respectively, increased DH, FAA, TVB-N...

Abstract Provided high product quality, ensilaging can be used to valorize fish filleting co-products into a silage suitable for food applications. However, documented challenge products from hemoglobin-rich raw materials is the susceptibility lipid oxidation, calling stabilization by antioxidants. In comparison among different rosemary-containing antioxidants and isoascorbic acid, we here found that commercial mixture Duralox MANC-213 (MANC) provided best protection against peroxide value...

Disease outbreaks are a limiting factor for the sustainable development of aquaculture industry. The intestinal tract is covered by mucus layer mainly comprised highly glycosylated proteins called mucins. Mucins regulate pathogen adhesion, growth, and virulence, glycans vital these functions. We analyzed mucin O-glycans on mucins from control full-fat extruded soy-bean-fed (known to cause enteritis) Arctic charr using liquid chromatography–tandem mass spectrometry. In total, 56 were...

Yeast is a potential alternative to fish meal in diets for farmed fish, yet replacing more than 50 % of results reduced growth. In 4-week experiment, 15 rainbow trout (Oncorhynchus mykiss) were cannulated and fed three each week: 30 as control (FM); 60 replacement protein, on digestible basis, with Saccharomyces cerevisiae (SC); Wickerhamomyces anomalus S. mix (WA). Blood was collected at 0, 3, 6, 12 24 h after feeding. the final week, exposed 1-min netting stressor evaluate possible...

A major challenge for the aquaculture industry is supply of sustainable feeds. promising model to achieve this utilize circular flows where feed ingredients, such as single cell protein, are cultivated using side streams food industry. The aim study was evaluate marine yeast Candida sake, produced on herring brine streams, a source protein and immune stimulant in salmonid fish. dry C. sake product contained 54% (3.3% lysine 0.8% methionine) 13% lipids (1.1% eicosapentaenoic, EPA, 1%...

Seafood has an important role to play achieve a sustainable food system that provides healthy growing world population. Future seafood production will be increasingly reliant on aquaculture where feed innovation is essential reduce environmental impacts and minimize competition. This study aimed investigate whether novel single cell protein ingredient based Paecilomyces variotii grown side stream from the forest industry could improve sustainability of farmed rainbow trout (Oncorhynchus...

The effects of replacing 40% dietary fish meal (FM) in a reference diet (REF) with either mussel (MM), zygomycete fungi (ZYG), extracted baker’s yeast (EY), or non-extracted (NY) on the lipid and metabolic profile Arctic charr (Salvelinus alpinus) were investigated. After 14-week feeding trial, liver muscle tissues collected for (lipid content, class, fatty acid composition) 1H NMR-based metabolomics analyses (aqueous chloroform phases). Lipid showed that fed ZYG had lower content thereby...

Changes in gut microbial composition over time rainbow trout fed differentially processed diets supplemented with the filamentous fungi Neurospora intermedia were investigated a 30-day feeding trial. Fish reference diet, non-preconditioned diet (NPD), or preconditioned (heat-treated) (PD), same inclusion level of N. NPD and PD. Gut microbiota analyzed on day 0, 10, 20, 30. was similar for all but significantly different at 10 20. On 30, again contained communities irrespective diet. The...

One approach to ongrow juvenile European lobster, Homarus gammarus, is utilize land based rearing systems, incorporating automated feeding, individual culture and provision of stable pelleted feeds, preferably using sustainable ingredients. We initiated three feeding experiments investigate the general suitability ingredients produced from seafood by-products as novel feeds for H. in terms promoting survival, development growth post-larval lobsters post-larvae (PL) stage IV first (stage V)....

Due to the growth of aquaculture and finite supply fishmeal oil, alternative marine protein lipid sources are highly sought after. Particularly promising is use side streams from fish processing industry, allowing for recovery retention otherwise lost nutrients in food production chain. The aim present study was evaluate potential three as feed ingredients. originated different stages chain, were used without further processing, included sprat trimmings (heads, frames, viscera), marinated...

A nutritional bottleneck in salmonid aquaculture is the procurement of marine‐derived compounds, such as essential amino and fatty acids, including omega‐3 lysine, methionine. Therefore, insects containing these compounds are highly promising feed ingredients. The present study evaluates larvae a “marine” insect ( Coelopa frigida , bristly‐legged seaweed fly larvae, SWFL) reared on brown algae side streams ingredient for rainbow trout Oncorhynchus mykiss ). SWFL contained, dry matter basis,...

In a 4-week experiment, 15 cannulated rainbow trout were fed three diets based on fish meal (FM), Saccharomyces cerevisiae yeast (SC) and Wickerhamomyces anomalus S. mix (WA). Fish daily, blood samples collected day 7 of each week at 0, 3, 6, 12 24 hr after feeding. the final week, exposed to 1-min netting stressor. All essential non-essential plasma amino acid levels except methionine similar between FM, SC WA. Plasma sarcosine significantly higher in WA, possibly due crystalline level,...

Norwegian farmed Atlantic salmon is a nutritious type of food in increasing demand and although production has stagnated faced by various challenges, it likely to continue expand the future. We present results from detailed greenhouse gas emission assessment most important export products along with improvement measures. By scaling up both baseline reduction opportunities, based on growth projections, we estimate current future emissions sector as whole. show that gutted Europe truck...

The aim of this study was to estimate the optimum dietary lysine requirement juvenile Eura-sian perch (Perca fluviatalis), and investigate influence different levels on growth, carcass composition, somatic indices haematocrit value. A total 240 included in a 12-week feeding study. Based whole body amino acid profile 48 three weight groups, eight semi-purified diets containing graded (L1-L8) were produced. contained approximately 12% crude lipid 40% protein level varied from 12.2 (L1) 24.3...