Engineering plant-based feedstocks for sustainable aquaculture

Napier, J. A.; Betancor, Mónica B.

doi:10.1016/j.pbi.2022.102323

Cited by 11 publications

(5 citation statements)

References 47 publications

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“…To address this issue, the feeding strategy and supplementation of omega 3-enriched plant oils (such as linseed oil, engineered plant oil, etc.) were applied to cultured fish to increase the muscular omega 3 contents, especially for n-3 LC-PUFA [24,31,32]. Previous studies on tilapia also showed that high α-linolenic acid diets improved n-3 LC-PUFA levels and muscle n-3/n-6 PUFA ratios in this fish [10,33].…”

Section: Discussionmentioning

confidence: 99%

Improvement in Muscle Fatty Acid Bioavailability and Volatile Flavor in Tilapia by Dietary α-Linolenic Acid Nutrition Strategy

Chen,

He,

et al. 2024

Foods

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To investigate the modification of muscle quality of farmed tilapia through dietary fatty acid strategies, two diets were formulated. Diet SO, using soybean oil as the lipid source, and diet BO, using blended soybean and linseed oils, each including 0.58% and 1.35% α-linolenic acid (ALA), respectively, were formulated to feed juvenile tilapia for 10 weeks. The muscular nutrition composition, positional distribution of fatty acid in triglycerides (TAGs) and phospholipids (PLs), volatile flavor, lipid mobilization and oxidation were then analyzed. The results showed that there was no distinct difference between the SO and BO groups in terms of the nutrition composition, including crude protein, crude lipid, TAGs, PLs, and amino acid. Although the fatty acid distribution characteristics in ATGs and PLs showed a similar trend in the two groups, a higher level of n-3 PUFA (polyunsaturated fatty acid) and n-3 LC-PUFA (long-chain polyunsaturated fatty acid) bound to the glycerol backbone of TAGs and PLs was detected in the BO group than the SO group, whereas the opposite was true for n-6 PUFA. Additionally, the muscular volatile aldehyde and alcohol levels were higher in the BO group. Moreover, the expression of enzymatic genes and protein activities related to lipid mobilization (LPL, LPCAT, DGAT) and oxidation (LOX and GPX) was higher in the BO group. The results demonstrate that high-ALA diets may improve the fatty acid bioavailability and volatile flavor of tilapia by improving the lipid mobilization and oxidation, which provides new ideas for the improvement of muscle quality in farmed fish.

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Section: Discussionmentioning

confidence: 99%

Improvement in Muscle Fatty Acid Bioavailability and Volatile Flavor in Tilapia by Dietary α-Linolenic Acid Nutrition Strategy

Chen,

He,

et al. 2024

Foods

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“…The production of genetically modified (GM) oilseed products has also been advocated as a solution for supplying omega-3 LC-PUFA. It can be easily scalable by using the infrastructures already available to produce VO and its use in salmon diets does not negatively affect fish growth or health (Tocher et al, 2019;Napier and Betancor, 2022;Ruyter et al, 2022;Davis and Devine, 2023). GM yeast strains have also been developed for the same purpose, but these are still unlikely to produce sufficient volumes at affordable prices to meet current demands (Hatlen et al, 2012;Tocher et al, 2019),.…”

Section: Alternative Sources Of Lc-pufa For Aquafeedsmentioning

confidence: 99%

The importance of essential fatty acids and their ratios in aquafeeds to enhance salmonid production, welfare, and human health

Carr¹,

Glencross

Santigosa³

2023

Front. Anim. Sci.

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Long chain polyunsaturated fatty acids (LC-PUFA), namely those from omega-3 (n-3) and omega-6 (n-6) families, are paramount for both fish and human nutrition. Some of these biomolecules cannot be synthesized de novo and must be acquired through the diet, being termed dietary essential fatty acids (EFA). Fish requirements for EFA have traditionally been met through the incorporation of fish oil (FO) in the formulation of aquafeeds. However, with limited supply of FO the aquaculture industry is searching for additional sustainable sources of LC-PUFA. This has significantly shifted the type of ingredients used in aquafeed formulation, namely vegetable oils (VO) deficient in long-chain omega-3, often resulting in imbalanced levels and ratios of fatty acid classes. Such imbalances can negatively affect fish performance and welfare, as well as the levels of health promoting omega-3 LC-PUFA present in fish fillets. Given the relevance that salmonid aquaculture plays in global fish production (principally Atlantic salmon, Salmo salar), as well as its growing role as a source of dietary health promoting omega-3 LC-PUFA for humans, the present review summarizes the scientific knowledge available to date on the dietary requirements for LC-PUFA by salmonids and humans. We discuss the implications of using imbalanced aquafeed formulations upon fish performance and welfare, as well as the subsequent consequences for human nutrition, along with current efforts to replace FO by alternative ingredients such as algal oil (AO) that can safeguard high-quality salmonid products for human consumption.

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“…Such alternatives could be used directly for human consumption as foods, depending upon their origin, or through the oil being incorporated into functional foods or used in supplements. Alternatively, the oil could be used in aquaculture [56] or for pet food applications, sparing fish oil for human use.…”

Section: Traditional Sources Of Very-long Chain Omega-3 Pufas Are Not...mentioning

confidence: 99%

Alternative sources of bioactive omega-3 fatty acids: what are the options?

Baker

2023

Current Opinion in Clinical Nutrition &Amp; Metabolic Care

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Purpose of review The very-long chain (VLC) omega-3 polyunsaturated fatty acids (PUFAs) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) promote optimal development, physiological function and healthy ageing and help to manage disease. EPA and DHA are sourced mainly from fish, which is not sustainable. This review explores alternative sustainable sources. Recent findings Recent research confirms that higher intake and status of EPA and DHA are associated with health benefits including lower risk of incident type-2 diabetes and cardiovascular disease mortality. Meta-analyses confirm benefits of intravenous EPA and DHA in hospitalized adults. Algal oils and seed oils from some genetically modified (GM) plants are sources of EPA and DHA. An oil from GM camelina showed equivalence with fish oil in human trials. Ahiflower oil, a source of stearidonic acid, had biological effects in experimental studies that might translate into health benefits. An intravenous lipid emulsion based on Ahiflower oil has been tested in experimental research. Pine nut oil (PNO) is a source of pinolenic acid, which is not an omega-3 PUFA but has similar actions. Summary Algal oils, oils from GM seed crops, Ahiflower oil and other sources of stearidonic acid, and nonomega-3 oils including PNO, are plant-sourced sustainable alternatives to fish-sourced VLC omega-3 PUFAs.

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Engineering plant-based feedstocks for sustainable aquaculture

Cited by 11 publications

References 47 publications

Improvement in Muscle Fatty Acid Bioavailability and Volatile Flavor in Tilapia by Dietary α-Linolenic Acid Nutrition Strategy

Improvement in Muscle Fatty Acid Bioavailability and Volatile Flavor in Tilapia by Dietary α-Linolenic Acid Nutrition Strategy

The importance of essential fatty acids and their ratios in aquafeeds to enhance salmonid production, welfare, and human health

Alternative sources of bioactive omega-3 fatty acids: what are the options?

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