Linseed oil as a substitute for fish oil in the diet of Arctic charr (Salvelinus alpinus), brook charr (S. fontinalis) and their reciprocal hybrids.

Cyr, Bernard-Antonin Dupont; François, Nathalie; Christen, Felix; Desrosiers, Véronique; Savoie, A.; Vandenberg, Grant W.; Dufresne, France; Blier, Pierre

doi:10.1016/j.aqrep.2021.100949

Cited by 8 publications

(4 citation statements)

References 71 publications

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“…These results are in agreement with Blomqvist et al (2018) study using L. starkeyi . Former studies have demonstrated a mirroring effect of the fish feed on Arctic char muscle lipid composition ( Pettersson, Pickova & Brännäs., 2010 ; Dupont-Cyr et al, 2022 ). Therefore, the evaluation of fatty acid profile and lipid content in fish muscle was required when evaluating fish growth performance as a modification of the fish feed may change its lipid composition, possibly leading to effects on the fish performance such as swimming performance and total lipid content ( Pettersson, Pickova & Brännäs., 2010 ) on growth factors ( Wagner et al, 2014 ), or a change on fatty acid composition of fillets for human consumption ( Teoh & Ng., 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Oleaginous yeast Rhodotorula toruloides biomass effect on the metabolism of Arctic char (Salvelinus alpinus)

Brunel

Burkina

Picková

et al. 2022

Front. Mol. Biosci.

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Sustainability issues arise when using fish oil and vegetable oils in fish feed production for aquaculture purposes. Microbial production of single cell oil is a potential alternative as a lipid ingredient in the production of fish feed. In this study, we replaced the vegetable oils with the oleaginous yeast R. toruloides biomass in the diet of Arctic char (S. alpinus) and investigated the effects on health and composition. Measurement of fish growth parameters showed a higher liver weight and hepatosomatic index in the experimental group of fish fed partly with yeast biomass compared to a control group fed a diet with vegetable oils. No significant differences in the lipid content of muscle and liver tissues were found. The fatty acid profiles in the muscle of both fish groups were similar while the experimental fish group had a higher amount of monounsaturated fatty acids in the liver. Histology of livers showed no significant difference in the number of lipid droplets. The size of hepatic lipid droplets seemed to be related to liver fat content. Quantification of metabolites in the liver revealed no differences between the fish groups while plasma metabolites involved in energy pathways such as alanine, 3-hydroxybutyrate, creatinine, serine, betaine, and choline were significantly higher in the experimental fish group.

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Section: Discussionmentioning

confidence: 99%

Oleaginous yeast Rhodotorula toruloides biomass effect on the metabolism of Arctic char (Salvelinus alpinus)

Brunel

Burkina

Picková

et al. 2022

Front. Mol. Biosci.

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show abstract

“…These results are in agreement with study using L. starkeyi. Former studies have demonstrated a mirroring effect of the fish feed on Arctic char muscle lipid composition (Pettersson, Pickova & Brännäs., 2010;Dupont-Cyr et al, 2022). Therefore, the evaluation of fatty acid profile and lipid content in fish muscle was required when evaluating fish Frontiers in Molecular Biosciences frontiersin.org growth performance as a modification of the fish feed may change its lipid composition, possibly leading to effects on the fish performance such as swimming performance and total lipid content (Pettersson, Pickova & Brännäs., 2010) on growth factors , or a change on fatty acid composition of fillets for human consumption (Teoh & Ng., 2016).…”

Section: Discussionmentioning

confidence: 99%

Metabolites in fish and humans as a response to different food ingredients : a metabolomics approach

Brunel¹

2023

Acta Universitatis Agriculturae Sueciae

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The main objective of this thesis was to evaluate metabolomics changes in humans and fish as a response to food/feed consumption. To alleviate the environmental impact of animal production and maximize the use of resources, the valorization of meat by-products might be an attractive alternative. A meat product containing heart and aorta tissue from pork was designed and analyzed for fatty acid and metabolite composition. In comparison with a control of similar qualities, the designed meat product (or test product) showed higher monounsaturated fatty acid and tyramine levels and lower levels of sugars. The test meat product was used in a randomized controlled clinical trial to test for potential health effects in patients showing atherosclerosis symptoms. Patients receiving the test product showed a decrease in blood levels of low-density lipoproteins, total cholesterol, atherogenic index and triacylglycerols. To reduce the impact of animal production on ecosystems, the replacement of feed ingredients by a microbial alternative was realized. In this study, vegetable oils included in the feed of Arctic char (Salvelinus alpinus) were replaced by biomass of the oleaginous yeast (Rhodotorula toruloides). The analysis of the yeast biomass showed safe levels of pollutants and heavy metals. Fish growth and muscle fatty acid profile were similar to the control. A higher liver weight and hepatosomatic index were observed in fish fed including the yeast biomass, albeit no significant difference in liver fat content or in hepatic enzyme activity was observed. Quantification of plasma metabolites revealed higher levels of metabolites involved in energy pathways such as one-carbon metabolism and gluconeogenesis. In conclusion, this thesis showed that metabolomics can be applied to evaluate effects of food/feed at the molecular level in complex systems. It adds knowledge on the effects of meat by-product consumption in the particular case of atherosclerosis symptoms. The fish feed trial showed the possibility of feed modification with a specific yeast.

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“…10 Supplementation with fish oil in aquafeed directly reflects the chemical composition of aquafeed and can influence DHA/EPA ratios. 10,36 Arachidonic acid (ARA), EPA, and DHA are the main essential HUFAs in fatty acid compositions, and these elements may be preventively supplemented in the diet. 37 In general, certain types of fatty acids are principal energy sources and crucial constructional portions for the diet.…”

Section: Discussionmentioning

confidence: 99%

Fatty acid composition on diet and carcasses, growth, body indices and profile serum of Asian redtail catfish (Hemibagrus nemurus) fed a diet containing different levels of EPA and DHA

et al. 2022

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Background: The Asian redtail catfish Hemibagrus nemurus is a promising commercial aquaculture freshwater big-sized Bagridae catfish across Asian countries such as the Mekong, Malay Peninsula, and Indonesia. This study analysed the effect of eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) supplementation in diets on changes in fatty acid compositions in feed and fish meat, lipid quality (atherogenic index and thrombogenic index), growth rate, body indicators, and serum metabolites of Hemibagrus nemurus juveniles. Methods: A total of 180 Asian redtail catfish (initial weight 54.80 ± 2.72 g) were fed four levels (0, 3,150, 6,300, and 9,450 mg of EPA+DHA/kg feed) sourced from fish oil. Diets were fed in triplicate in freshwater tarpaulin ponds, with 15 fish per tarpaulin pond. During the experiment, fish were fed 3% per day of the biomass weight. Results: Categorically, there were significant differences in the composition of fatty acids in the feed and fish meat. The atherogenic index was between 1.76 and 1.84, and the thrombogenic index was between 0.81 and 0.89 in all fish meat. Growth performance was significantly different between diets, while body indices did not make a significant difference between diets. The fish meat EPA and DHA showed positive linear relationships with diet EPA (p <0.001, r2 = 90%) and DHA diet (p<0.001, r2 = 85%). Serum metabolites among treatments D2 and D3 diet-fed feed for 60 days did not significantly differ. Glucose (GLU) levels had moderate relationships with triglycerides (TAG) (r2 = 65%), and GLU levels strongly correlated with low-density lipoprotein cholesterol (LDL-C) (r2 = 81%). Conclusions: Based on diets and whole-body carcass compositions, growth performance, and serum metabolites, Asian redtail catfish fed a diet containing 6,300 mg of EPA+DHA/kg feed are best for food safety.

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Linseed oil as a substitute for fish oil in the diet of Arctic charr (Salvelinus alpinus), brook charr (S. fontinalis) and their reciprocal hybrids.

Cited by 8 publications

References 71 publications

Oleaginous yeast Rhodotorula toruloides biomass effect on the metabolism of Arctic char (Salvelinus alpinus)

Oleaginous yeast Rhodotorula toruloides biomass effect on the metabolism of Arctic char (Salvelinus alpinus)

Metabolites in fish and humans as a response to different food ingredients : a metabolomics approach

Fatty acid composition on diet and carcasses, growth, body indices and profile serum of Asian redtail catfish (Hemibagrus nemurus) fed a diet containing different levels of EPA and DHA

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