keyword
MENU ▼
Read by QxMD icon Read
search

Salmon salar feeding

keyword
https://www.readbyqxmd.com/read/28148974/modelling-growth-performance-and-feeding-behaviour-of-atlantic-salmon-salmo-salar-l-in-commercial-size-aquaculture-net-pens-model-details-and-validation-through-full-scale-experiments
#1
Martin Føre, Morten Alver, Jo Arve Alfredsen, Giancarlo Marafioti, Gunnar Senneset, Jens Birkevold, Finn Victor Willumsen, Guttorm Lange, Åsa Espmark, Bendik Fyhn Terjesen
: We have developed a mathematical model which estimates the growth performance of Atlantic salmon in aquaculture production units. The model consists of sub-models estimating the behaviour and energetics of the fish, the distribution of feed pellets, and the abiotic conditions in the water column. A field experiment where three full-scale cages stocked with 120,000 salmon each (initial mean weight 72.1  ± SD 2.8 g) were monitored over six months was used to validate the model. The model was set up to simulate fish growth for all the three cages using the feeding regimes and observed environmental data as input, and simulation results were compared with the experimental data...
November 1, 2016: Aquaculture
https://www.readbyqxmd.com/read/28137252/enhanced-transcriptomic-responses-in-the-pacific-salmon-louse-lepeophtheirus-salmonis-oncorhynchi-to-the-non-native-atlantic-salmon-salmo-salar-suggests-increased-parasite-fitness
#2
Laura M Braden, Ben J G Sutherland, Ben F Koop, Simon R M Jones
BACKGROUND: Outcomes of infections with the salmon louse Lepeophtheirus salmonis vary considerably among its natural hosts (Salmo, Oncorhynchus spp.). Host-parasite interactions range from weak to strong host responses accompanied by high to low parasite abundances, respectively. Parasite behavioral studies indicate that the louse prefers the host Atlantic Salmon (Salmo salar), which is characterized by a weak immune response, and that this results in enhanced parasite reproduction and growth rates...
January 30, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28112067/requirements-of-n-3-very-long-chain-pufa-in-atlantic-salmon-salmo-salar-l-effects-of-different-dietary-levels-of-epa-and-dha-on-fish-performance-and-tissue-composition-and-integrity
#3
Marta Bou, Gerd M Berge, Grete Baeverfjord, Trygve Sigholt, Tone-Kari Østbye, Odd Helge Romarheim, Bjarne Hatlen, Robin Leeuwis, Claudia Venegas, Bente Ruyter
Farmed salmon feeds have changed from purely marine-based diets with high levels of EPA and DHA in the 1990s to the current 70 % plant-based diets with low levels of these fatty acids (FA). The aim of this study was to establish the impacts of low dietary EPA and DHA levels on performance and tissue integrity of Atlantic salmon (Salmo salar). Atlantic salmon (50 g) in seawater were fed fourteen experimental diets, containing five levels (0, 0·5, 1·0, 1·5 and 2·0 %) of EPA, DHA or a 1:1 EPA+DHA plus control close to a commercial diet, to a final weight of 400 g...
January 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28111483/environmental-and-physiological-factors-shape-the-gut-microbiota-of-atlantic-salmon-parr-salmo-salar-l
#4
Carola E Dehler, Christopher J Secombes, Samuel A M Martin
: Gut microbes are key players in host immune system priming, protection and development, as well as providing nutrients to the host that would be otherwise unavailable. Due to this importance, studies investigating the link between host and microbe are being initiated in farmed fish. The establishment, maintenance and subsequent changes of the intestinal microbiota are central to define fish physiology and nutrition in the future. In fish, unlike mammals, acquiring intestinal microbes is believed to occur around the time of first feeding mainly from the water surrounding them and their microbial composition over time is shaped therefore by their habitat...
January 20, 2017: Aquaculture
https://www.readbyqxmd.com/read/28101948/influence-of-the-marine-feeding-area-on-the-muscle-and-egg-fatty-acid-composition-of-atlantic-salmon-salmo-salar-spawners-estimated-from-the-scale-stable-isotopes
#5
J Torniainen, M J Kainz, R I Jones, M Keinänen, P J Vuorinen, M Kiljunen
Fatty acids in muscle tissue and eggs of female Atlantic salmon Salmo salar spawners were analysed to evaluate the dietary quality of their final feeding areas in the Baltic Sea. The final likely feeding area was identified by comparing stable carbon and nitrogen isotope composition of the outermost growth region (final annulus) of scales of returned S. salar with that of reference S. salar caught from different feeding areas. Some overlap of stable-isotope reference values among the three areas, in addition to prespawning fasting, decreased the ability of muscle tri-acylglycerols to discriminate the final likely feeding area and the area's dietary quality...
January 18, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28046109/dietary-yeast-cell-wall-extract-alters-the-proteome-of-the-skin-mucous-barrier-in-atlantic-salmon-salmo-salar-increased-abundance-and-expression-of-a-calreticulin-like-protein
#6
Giulia Micallef, Phillip Cash, Jorge M O Fernandes, Binoy Rajan, John W Tinsley, Ralph Bickerdike, Samuel A M Martin, Alan S Bowman
In order to improve fish health and reduce use of chemotherapeutants in aquaculture production, the immunomodulatory effect of various nutritional ingredients has been explored. In salmon, there is evidence that functional feeds can reduce the abundance of sea lice. This study aimed to determine if there were consistent changes in the skin mucus proteome that could serve as a biomarker for dietary yeast cell wall extract. The effect of dietary yeast cell wall extract on the skin mucus proteome of Atlantic salmon was examined using two-dimensional gel electrophoresis...
2017: PloS One
https://www.readbyqxmd.com/read/28012776/a-novel-in-feed-delivery-platform-applied-for-oral-dna-vaccination-against-ipnv-enables-high-protection-in-atlantic-salmon-salmon-salar
#7
Miguel Reyes, Cesar Ramírez, Ivan Ñancucheo, Ricardo Villegas, Guillermo Schaffeld, Luis Kiman, Javier Gonzalez, Patricio Oyarzun
BACKGROUND: DNA vaccination has emerged as a promising tool against infectious diseases of farmed fish. Oral delivery allows stress-free administration that is ideal for mass immunization and of paramount importance for infectious pancreatic necrosis (IPN) and other viral disease that affect young salmonids and cause economic losses in aquaculture worldwide. METHODS: We describe the development and in vivo assessment of an "in-feed" formulation strategy for oral immunization with liposomal DNA vaccines, by delivering a vaccine construct coding for an immunogenic region of the VP2 capsid protein...
December 21, 2016: Vaccine
https://www.readbyqxmd.com/read/27986728/alternative-protein-sources-in-the-diet-modulate-microbiota-and-functionality-in-the-distal-intestine-of-atlantic-salmon-salmo-salar
#8
Karina Gajardo, Alexander Jaramillo-Torres, Trond M Kortner, Daniel L Merrifield, John Tinsley, Anne Marie Bakke, Åshild Krogdahl
The present study aimed to investigate whether alternative dietary protein sources modulate the microbial communities in the distal intestine (DI) of Atlantic salmon, and whether alterations in microbiota profiles are reflected in modifications in host intestinal function and health status. A 48-day feeding trial was conducted, in which groups of fish received one of five diets: a reference diet in which fishmeal (diet FM) was the only protein source and four experimental diets with commercially relevant compositions containing alternative ingredients as partial replacements of fishmeal, i...
March 1, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27907206/intestinal-fluid-permeability-in-atlantic-salmon-salmo-salar-l-is-affected-by-dietary-protein-source
#9
Haibin Hu, Trond M Kortner, Karina Gajardo, Elvis Chikwati, John Tinsley, Åshild Krogdahl
In Atlantic salmon (Salmo salar L.), and also in other fish species, certain plant protein ingredients can increase fecal water content creating a diarrhea-like condition which may impair gut function and reduce fish growth. The present study aimed to strengthen understanding of the underlying mechanisms by observing effects of various alternative plant protein sources when replacing fish meal on expression of genes encoding proteins playing key roles in regulation of water transport across the mucosa of the distal intestine (DI)...
2016: PloS One
https://www.readbyqxmd.com/read/27888129/iron-metabolism-modulation-in-atlantic-salmon-infested-with-the-sea-lice-lepeophtheirus-salmonis-and-caligus-rogercresseyi-a-matter-of-nutritional-immunity
#10
Valentina Valenzuela-Muñoz, Cristian Gallardo-Escárate
Sea lice are copepodid ectoparasites that produce high economic losses and environmental issues, thus impacting the salmon aquaculture worldwide. Atlantic salmon (Salmo salar) from Northern and Southern Hemispheres are primarily parasitized by Lepeophtheirus salmonis and Caligus rogercresseyi, respectively. To cope L. salmonis infestation, studies suggest that Atlantic salmon can restrict iron availability as a mechanism of nutritional immunity. However, no molecular studies of iron regulation from salmonids infected with C...
November 22, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27843721/antioxidant-nutrition-in-atlantic-salmon-salmo-salar-parr-and-post-smolt-fed-diets-with-high-inclusion-of-plant-ingredients-and-graded-levels-of-micronutrients-and-selected-amino-acids
#11
Kristin Hamre, Nini H Sissener, Erik-Jan Lock, Pål A Olsvik, Marit Espe, Bente E Torstensen, Joana Silva, Johan Johansen, Rune Waagbø, Gro-Ingunn Hemre
The shift from marine to plant-based ingredients in fish feeds affects the dietary concentrations and bioavailability of micronutrients, amino acids and lipids and consequently warrants a re-evaluation of dietary nutrient recommendations. In the present study, an Atlantic salmon diet high in plant ingredients was supplemented with graded levels of nutrient premix (NP), containing selected amino acids, taurine, cholesterol, vitamins and minerals. This article presents the results on the antioxidant nutrients vitamin C, E and selenium (Se), and effects on tissue redox status...
2016: PeerJ
https://www.readbyqxmd.com/read/27742588/the-effects-of-increasing-dietary-levels-of-soy-protein-concentrate-spc-on-the-immune-responses-and-disease-resistance-furunculosis-of-vaccinated-and-non-vaccinated-atlantic-salmon-salmo-salar-l-parr
#12
Christoforos P Metochis, I Spanos, N Auchinachie, V O Crampton, J G Bell, A Adams, K D Thompson
Juvenile salmon, with an initial weight of 9 g, were fed three experimental diets, formulated to replace 35 (SPC35), 58 (SPC58) and 80 (SPC80) of high quality fishmeal (FM) with soy protein concentrate (SPC) in quadruplicate tanks. Higher dietary SPC inclusion was combined with increased supplementation of methionine, lysine, threonine and phosphorus. The experiment was carried out for 177 days. On day 92 salmon in each tank were bulk weighed. Post weighing eighty salmon from each tank were redistributed in two sets of 12 tanks...
December 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27703849/atlantic-salmon-salmo-salar-require-increased-dietary-levels-of-b-vitamins-when-fed-diets-with-high-inclusion-of-plant-based-ingredients
#13
Gro-Ingunn Hemre, Erik-Jan Lock, Pål Asgeir Olsvik, Kristin Hamre, Marit Espe, Bente Elisabeth Torstensen, Joana Silva, Ann-Cecilie Hansen, Rune Waagbø, Johan S Johansen, Monica Sanden, Nini H Sissener
Aiming to re-evaluate current recommendations for nutrient supplementations when Atlantic salmon are fed diets based on plant ingredients, two regression experiments, with parr and post-smolt, were conducted. A control diet was included to evaluate if ingredients supplied sufficient nutrients without any added nutrient package (NP). The nutrient package consisted of vitamins B, C, E, minerals, cholesterol, methionine, taurine and histidine. This paper focus on B-vitamins. In parr, growth, health and welfare parameters responded on NP additions, but this was not observed in the seawater stage...
2016: PeerJ
https://www.readbyqxmd.com/read/27565308/modelling-scenarios-on-feed-to-fillet-transfer-of-dioxins-and-dioxin-like-pcbs-in-future-feeds-to-farmed-atlantic-salmon-salmo-salar
#14
Marc H G Berntssen, Monica Sanden, Helge Hove, Øyvind Lie
The salmon feed composition has changed the last decade with a replacement of traditionally use of fish oil and fishmeal diets with vegetable ingredients and the use decontaminated fish oils, causing reduced concentrations of dioxins and dioxin-like PCBs in farmed Norwegian Atlantic salmon. The development of novel salmon feeds has prompted the need for prediction on dioxins and dl-PCB concentrations in future farmed salmon. Prediction on fillet dioxins and dl-PCB concentrations from different feed composition scenarios are made using a simple one-compartmental transfer model based on earlier established dioxin and dl-PCB congener specific uptake and elimination kinetics rates...
November 2016: Chemosphere
https://www.readbyqxmd.com/read/27556399/preliminary-validation-of-a-high-docosahexaenoic-acid-dha-and-linolenic-acid-ala-dietary-oil-blend-tissue-fatty-acid-composition-and-liver-proteome-response-in-atlantic-salmon-salmo-salar-smolts
#15
Waldo G Nuez-Ortín, Chris G Carter, Richard Wilson, Ira Cooke, Peter D Nichols
Marine oils are important to human nutrition as the major source of docosahexaenoic acid (DHA), a key omega-3 long-chain (≥C20) polyunsaturated fatty acid (n-3 LC-PUFA) that is low or lacking in terrestrial plant or animal oils. The inclusion of fish oil as main source of n-3 LC-PUFA in aquafeeds is mostly limited by the increasing price and decreasing availability. Fish oil replacement with cheaper terrestrial plant and animal oils has considerably reduced the content of n-3 LC-PUFA in flesh of farmed Atlantic salmon...
2016: PloS One
https://www.readbyqxmd.com/read/27496636/disruption-of-host-seeking-behaviour-by-the-salmon-louse-lepeophtheirus-salmonis-using-botanically-derived-repellents
#16
B O'Shea, S Wadsworth, J Pino Marambio, M A Birkett, J A Pickett, A J Mordue Luntz
The potential for developing botanically derived natural products as novel feed-through repellents for disrupting settlement of the salmon louse, Lepeophtheirus salmonis (Caligidae) upon farmed Atlantic salmon, Salmo salar, was investigated using an established laboratory vertical Y-tube behavioural bioassay for assessing copepodid behaviour. Responses to artificial sea water conditioned with the odour of salmon, or to the known salmon-derived kairomone component, α-isophorone, in admixture with selected botanical materials previously known to interfere with invertebrate arthropod host location were recorded...
August 6, 2016: Journal of Fish Diseases
https://www.readbyqxmd.com/read/27460446/plasticity-in-response-to-feed-availability-does-feeding-regime-influence-the-relative-growth-performance-of-domesticated-wild-and-hybrid-atlantic-salmon-salmo-salar-parr
#17
A C Harvey, M F Solberg, K A Glover, M I Taylor, S Creer, G R Carvalho
Growth of farmed, wild and F1 hybrid Atlantic salmon parr Salmo salar was investigated under three contrasting feeding regimes in order to understand how varying levels of food availability affects relative growth. Treatments consisted of standard hatchery feeding (ad libitum), access to feed for 4 h every day, and access to feed for 24 h on three alternate days weekly. Mortality was low in all treatments, and food availability had no effect on survival of all groups. The offspring of farmed S. salar significantly outgrew the wild S...
September 2016: Journal of Fish Biology
https://www.readbyqxmd.com/read/27454884/nutritional-evaluation-of-an-epa-dha-oil-from-transgenic-camelina-sativa-in-feeds-for-post-smolt-atlantic-salmon-salmo-salar-l
#18
Mónica B Betancor, Matthew Sprague, Olga Sayanova, Sarah Usher, Christoforos Metochis, Patrick J Campbell, Johnathan A Napier, Douglas R Tocher
Vegetable oils (VO) are possible substitutes for fish oil in aquafeeds but their use is limited by their lack of omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFA). However, oilseed crops can be modified to produce n-3 LC-PUFA such as eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids, representing a potential option to fill the gap between supply and demand of these important nutrients. Camelina sativa was metabolically engineered to produce a seed oil with around 15% total n-3 LC-PUFA to potentially substitute for fish oil in salmon feeds...
2016: PloS One
https://www.readbyqxmd.com/read/27293765/condition-dependent-migratory-behaviour-of-endangered-atlantic-salmon-smolts-moving-through-an-inland-sea
#19
Glenn T Crossin, Bruce G Hatcher, Shelley Denny, Kim Whoriskey, Michael Orr, Alicia Penney, Frederick G Whoriskey
The Bras d'Or Lake watershed of Cape Breton Island, Nova Scotia, Canada is a unique inland sea ecosystem, UNESCO Biosphere Reserve and home to a group of regionally distinct Atlantic salmon (Salmo salar) populations. Recent population decreases in this region have raised concern about their long-term persistence. We used acoustic telemetry to track the migrations of juvenile salmon (smolts) from the Middle River into the Bras d'Or Lake and, subsequently, into the Atlantic Ocean. Roughly half of the tagged smolts transited the Bras d'Or Lakes to the Atlantic Ocean, using a migration route that took them through the Gulf of St Lawrence's northern exit at the Strait of Belle Isle (∼650 km from the home river) towards feeding areas in the Labrador Sea and Greenland...
2016: Conservation Physiology
https://www.readbyqxmd.com/read/27293556/atlantic-salmon-require-long-chain-n-3-fatty-acids-for-optimal-growth-throughout-the-seawater-period
#20
Grethe Rosenlund, Bente E Torstensen, Ingunn Stubhaug, Nafiha Usman, Nini H Sissener
The nutritional requirement for n-3 long-chain PUFA in fast-growing Atlantic salmon (Salmo salar) during grow out in the sea is not well documented. Diets were formulated with levels of EPA (20 : 5n-3) and DHA (22 : 6n-3) ranging from 1·3 to 7·4 % of fatty acids (4-24 g/kg feed). Two long-term trials were conducted through the seawater phase, the first at 6 and 12°C, and the second at 12°C. In the first trial, growth at both temperatures was significantly lower in fish fed 1·4 % EPA+DHA of total fatty acids compared with the 5·2 % EPA+DHA group...
2016: Journal of Nutritional Science
keyword
keyword
48448
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"