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Effects of two lactic acid bacteria probiotics type on the intestinal microbiota of farmed salmon.

ABSTRACT: Lactobacillus dominate in the intestine of Atlantic salmon fed dietary probiotics.

PROVIDER: PRJEB27867 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR2709610.fastq.gz	Fastqsanger.gz
	ERR2709620.fastq.gz	Fastqsanger.gz
	ERR2709630.fastq.gz	Fastqsanger.gz
	ERR2709640.fastq.gz	Fastqsanger.gz
	ERR2709650.fastq.gz	Fastqsanger.gz

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Dietary cholesterol supplementation to a plant-based diet for Atlantic salmon

Project description:The study evaluated effects of dietary cholesterol (1.5%) in Atlantic salmon fed a plant based diet for 77 days. Cholesterol supplementation did not affect growth or organ weights of Atlantic salmon, but promoted induction of cholesterol and plant sterol efflux in the intestine, whereas sterol uptake was suppressed. Microarray analyses in the liver indicated decreased cholesterol biosynthesis and enhanced conversion to bile acids. The marked effect of cholesterol on bile acid synthesis suggests that dietary cholesterol can be used to stimulate bile acid synthesis in fish. The study clearly demonstrated how Atlantic salmon adjusted metabolic functions in response to the dietary load of cholesterol, and has expanded our understanding of sterol metabolism and turnover that adds to the knowledge of these processes in fish. Atlantic salmon received feeds based on plant ingredients with (CH) and without (K) supplementation of cholesterol. Liver samples were collected after 77 days. Five individuals from each group were analyzed with microarrays, pooled liver sample of salmon fed with commerical fish meal based feed was used as a reference.

2013-10-31 | E-GEOD-51887 | biostudies-arrayexpress

Dietary supplementation to a plant-based diet for Atlantic salmon

Project description:The study evaluated effects of dietary cholesterol (CH), taurocholate (TC), choline (CN) and taurine (TA) in Atlantic salmon fed a plant based diet for 77 days. The additives did not affect growth or organ weights of Atlantic salmon, but promoted induction of cholesterol and plant sterol efflux in the intestine, whereas sterol uptake was suppressed. Microarray analyses in the liver indicated decreased cholesterol biosynthesis and enhanced conversion to bile acids. The marked effect of cholesterol on bile acid synthesis suggests that dietary cholesterol can be used to stimulate bile acid synthesis in fish. The study clearly demonstrated how Atlantic salmon adjusted metabolic functions in response to the dietary load of cholesterol, and has expanded our understanding of sterol metabolism and turnover that adds to the knowledge of these processes in fish. Feed supplementation with choline improved lipid absorption and suppressed abnormal accumulation of fat in the gut.

2013-10-31 | GSE51887 | GEO

Changes in the liver transcriptome of farmed Atlantic salmon (Salmo salar) fed diets based on terrestrial alternatives to fish meal and fish oil

Project description:After a 14-week feeding trial, Atlantic salmon fed a diet based on animal by-product meal and vegetable oil (ABP) showed lower growth rates compared to others fed an FM/FO-based diet (MAR). Interestingly, feeding a vegetable meal/oil-based diet (VEG) resulted in growth rates similar to the FM/FO-based diet. A 44K microarray experiment conducted on liver total RNA samples from these three dietary groups identified 46 genes related to metabolic and growth-relevant pathways, 25 immune-related, and 12 related to oxidation-reduction processes.

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Candida utilis as a protein source for Atlantic salmon

Project description:Single cell proteins, such as Candida utilis, are known to have immunomodulating effects in the distal intestine (DI) of Atlantic salmon, whereas soybean meal (SBM) can cause soybean meal induce enteritis (SBMIE). Inflammatory or immunomodulatory stimuli at the local level in the intestine may alter the plasma protein profile of Atlantic salmon. These changes can be helpful tools in diagnosis for fish diseases and indicators for fish health. The present work aimed to identify local intestinal tissue responses and changes in plasma protein profiles of Atlantic salmon fed C. utilis yeast, SBM, or combined diets. Fish meal (FM) based diet was used as a control diet and the six experimental diets were: FM diet with 200 g/kg C. utilis (FM200CU) and five diets containing 200 g/kg SBM together with 0 (SBM group), 25, 50, 100 or 200 g/kg C. utilis (SBM25CU, SBM50CU, SBM100CU and SBM200CU groups, respectively). Intestine morphology of fish fed FM200CU where not affected whereas SBM group presented changes characteristic of SBMIE. Low inclusion of C. utilis in SBM diet showed a modulation of immune cell populations, but did not alleviate inflammatory symptom.

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Homologous genes shared between probiotics and pathogens affected the adhesion of probiotics and exclusion of pathogens in gut mucus

Project description:Clarifying mechanisms underlying the selective adhesion of probiotics and competitive exclusion of pathogens in the intestine is a central theme of maintaining host health.

2023-07-20 | PXD036035 | Pride

Dietary soyasaponin supplementation to pea protein concentrate reveals nutrigenomic interactions underlying enteropathy in Atlantic salmon

Project description:Atlantic salmon was fed with diets based on five plant protein sources combined with soyabean saponins. Diets with corn gluten, sunflower, rapeseed and horsebean produced minor effects while combination of saponins with pea protein concentrate caused enteritis and major transcriptome changes in the distal intestine. Microarray analyses were perfromed in distant intestine. Individual samples from fish that received saponing were hybridized to pools from salmon fed with the same feeds without saponins.

2011-12-21 | E-GEOD-34578 | biostudies-arrayexpress

Liver transcriptome profiling reveals that dietary DHA and EPA levels influence suites of genes involved in metabolism, redox homeostasis, and immune function in Atlantic salmon (Salmo salar)

Project description:The optimal dietary requirement of omega-3 long-chain polyunsaturated fatty acids (ω3 LC-PUFA), namely docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), for Atlantic salmon that promotes optimal growth and health warrants careful investigation. We used 44K microarrays to study the influence of increasing levels of dietary DHA + EPA (0, 1.0 and 1.4% of the diet, as formulated) in the presence of high linoleic acid (LA) on Atlantic salmon growth and liver transcriptome. After a 14-week feeding trial, Atlantic salmon fed diet ω3LC0 (i.e. 0% of DHA + EPA) showed significantly lower final weight and weight gain, and higher feed conversion ratio compared with ω3LC1.0 and ω3LC1.4 diet groups. The microarray experiment identified 55 and 77 differentially expressed probes (Rank Products analyses; PFP < 10%) in salmon fed diets ω3LC1.4 and ω3LC1.0 compared with those fed diet ω3LC0, respectively. The comparison between ω3LC1.4 and ω3LC1.0 revealed 134 differentially expressed probes.

2020-02-03 | GSE128472 | GEO

Dietary carbohydrates in land-locked Atlantic salmon (Salmo salar L.): impact on hepatic metabolism

Project description:A common-garden experiment was carried out to compare two genetically distinct strains of Atlantic salmon (Salmo salar) fed diets formulated with either high (CHO) or low (NoCHO) carbohydrate (starch). Twenty salmon from either a commercial farmed strain or a land-locked population were placed in two tanks (10 fish of each population in each tank) and fed either CHO or NoCHO feeds for 32 days. At the end of the experimental period fish were fasted for 8 h, euthanized and samples of blood and liver collected. Both diet and population had an effect on circulating glucose levels with land-locked salmon showing hypoglycaemia and dietary starch increasing this parameter. In contrast, land-locked salmon showed increased plasma triacylglycerol levels regardless of dietary treatment. This enhanced ability to metabolise dietary starch in land-locked compared to farmed salmon stock was also reflected at a molecular (gene) level as most of the metabolic pathways evaluated in the present study were mainly affected by the factor population rather than by diet. In particular, lower expression of genes for mitochondrial metabolism in land-locked salmon reflects drastic differences in energy metabolism between the populations. The liver transcriptome analysis highlighted some new gene candidates such as elovl6 to evaluate in future studies assessing the capacity of salmonids to cope with feeds containing higher levels of dietary starch.

2018-12-31 | E-MTAB-6188 | biostudies-arrayexpress

Transcriptome profiling of antiviral immune and dietary fatty acid dependent responses of Atlantic salmon macrophage-like cells

Project description:A study was conducted to determine if different levels of vegetable and fish oils can alter antiviral responses of salmon macrophage-like cells (MLCs). Atlantic salmon were fed diets containing 7.38% (FO7) or 5.09% (FO5) fish oil. These diets were designed to be relatively low in EPA+DHA (i.e. FO7: 1.41% and FO5: 1%), but near the requirement level, resulting in no significant change in salmon growth. After a 16-week feeding trial, macrophages isolated from fish in these dietary groups were stimulated by a viral mimic (dsRNA: pIC) or PBS (control) for 24 h. A 44K microarray experiment identified the diet-responsive transcripts between dietary treatments and pIC-responsive transcripts within each group.

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The farmed Atlantic salmon (Salmo salar) skin-mucus proteome

Project description:Norway is the largest producer and exporter of farmed Atlantic salmon (Salmo salar) worldwide. Skin disorders correlated with bacterial infections represent an important challenge for fish farmers due to the economic losses caused. Little is known about this topic, thus studying the skin-mucus of Salmo salar and its bacterial community depict a step forward in understanding fish welfare in aquaculture. In this study, we used label free quantitative mass spectrometry to investigate the skin-mucus proteins associated with both Atlantic salmon and bacteria. In addition, the microbial temporal proteome dynamics during 9 days of mucus incubation with sterilized seawater was investigated, in order to evaluate their capacity to utilize mucus components for growth in this environment.

2019-07-15 | PXD008838 | Pride

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