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| Registros recuperados: 13 | |
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| Jokumsen, Alfred; Gesto, Manuel; Lund, Ivar; Madsen, Lone; Andersen R., Nikolaj; Pedersen, Lars-Flemming; Larsen, Erling P.; Nielsen, Max; Nielsen, Thorkild; Larsen, Villy J.. |
| Formålet med RobustFish projektet var at: • Styrke udviklingen af økologisk ørredproduktion i Danmark men også til gavn for konventionelt opdræt • Undersøge ørredyngels robusthed i forhold til start-fodrings adfærd, fedtsyreindholdet i foderet og følsomhed over for yngeldødeligheds-syndromet (YDS) • Effekt af vandbehandling med hjælpestoffer • Viden om markedsforhold, forbrugerkendskab, produktudvikling og øget afsætning. Robustfish har adresseret ovennævnte problemstillinger, og på grundlag af opnåede resultater kan der drages følgende konklusioner og deraf følgende anbefalinger og perspektiver for styrkelse af det økologiske opdræt af regnbueørred i Danmark. • Yngel med tidlig fødesøgnings adfærd (swim-up) viste tendens til større robusthed... |
| Tipo: Report |
Palavras-chave: Production systems; Feeding and growth; Markets and trade; Health and welfare; Aquaculture. |
| Ano: 2018 |
URL: http://orgprints.org/33577/1/Workshop_Report_Presentations_FINAL.pdf |
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| Lund, Ivar; Lazado, Carlo C.; Jokumsen, Alfred. |
| The Organic Regulation of fish farming states strong limitations on the sourcing of protein and fat (oil) ingredients in organic feed, i.e. aiming to phase out fishmeal (FM) and fish oil (FO) obtained from wild fish stocks and this may lead to a higher inclusion of other ingredients, especially of vegetable origin including proteins i.e. soybean; wheat; corn; barley; cottonseed; canola and peas, and oils i.e.: soybean; canola; linseed; sunflower; palm oil a.o. (Gatlin et al., 2007). A complete substitution of (FM) by vegetable protein alternatives may, however, lead to reduced performance in salmonids. Nutritional deficiencies and lack of essential amino acids; high dietary levels of antinutrients/ carbohydrates are typical factors leading to lower feed... |
| Tipo: Report |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2018 |
URL: http://orgprints.org/33386/1/D3.1.2.docx |
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| Lund, Ivar; Dalsgaard, Johanne; Larsen, Bodil; Jokumsen, Alfred. |
| The demand for organic trout is increasing, stressing the need for organic, vegetable feed ingredients as replacement for fish meal, as the principles of organic aquaculture encourage the development of feed that do not deplete global fish stocks. In addition, the organic code of practice does not allow addition of artificial amino acids to the feed, and optimization of the amino acid profile of organically based diets must therefore derive from the protein sources alone. The aim of this study was to evaluate the digestibility and growth performance of organic vegetable dietary ingredients as replacement for fish meal and fish oil in feed for organic rainbow trout (Oncorhynchus mykiss). Six iso-energetic and iso- nitrogenous diets were prepared,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Research methodology and philosophy; Farm nutrient management. |
| Ano: 2010 |
URL: http://orgprints.org/17241/1/17241.pdf |
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| Andersen, G., Nikolaj; Lund, Ivar; Jokumsen, Alfred; Madsen, Lone. |
| Among the most serious rainbow trout (Oncorhynchus mykiss) fry diseases in Danish aquaculture is Rainbow Trout Fry syndrome (RTFS), caused by the bacterium Flavobacterium psychrophilum. The robustness of the rainbow trout fry towards F. psychrophilum may be related to dietary lipid composition and the content of highly unsaturated omega-3 fatty acids (HUFAs). In the project RobustFish we tested the immune competence of 1g rainbow trout fry towards F. psychrophilum by experimental challenges with the bacterium, either intraperitoneal injection (triplicate aquaria with 30 fish per aquarium) or bath infection (duplicate aquaria with 60 fish per aquarium). Additionally, four experimental control aquaria for each challenge method. From first feeding and... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2017 |
URL: http://orgprints.org/32855/1/EAFP%202017%20Abstract%20N%20Andersen%20et%20al%20017-O.pdf |
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| Lund, Ivar; Jokumsen, Alfred. |
| The EU regulation (EC 710/2009) on Organic Aquaculture states that the principles of organic rearing shall include the whole trout production cycle, i.e. the fish production shall be based on organic fry. The Organic Regulation of fish farming states strong limitations on the sourcing of protein and fat ingredients in organic feed, i.e. aiming to phase out fish oil obtained from wild fish stocks and this may lead to a higher inclusion of other oils, especially vegetable oils as these are widely used. The main difference between vegetable oils (VO) and fish oils (FO) is related to the content of so called long chain essential n-3 (previously denoted Ω-3) and n-6 (previously denoted Ω-6) polyunsaturated fatty acids (LC- PUFAs). These are main constituents... |
| Tipo: Report |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2018 |
URL: http://orgprints.org/33385/1/D3.1.1.docx |
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| Lund, Ivar; Dalsgaard, Johanne; Hansen, Jonea Høeg; Jacobsen, Charlotte; Holm, Jørgen; Jokumsen, Alfred. |
| The study compared the effect of four either fresh or force oxidized organic plant oils in diets for juvenile rainbow trout (Oncorhynchus mykiss) in which 47% of conventional LT fish meal protein was substituted by a mixture of 3 organic plant protein concentrates. Fish oil was completely substituted with either organic linseed oil; rape seed oil; sunflower oil or grape seed oil and evaluated based on feed intake, feed utilization, growth and digestibility. None of the plant oils affected feed intake and growth parameters. Organic plant oils had all a positive effect on lipid digestibility as compared with the fish oil based control diet, despite the very different FA profiles. The organic vegetable oils did not undergo autoxidation, as opposed to the fish... |
| Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health Feeding and growth Health and welfare Education; Extension and communication. |
| Ano: 2012 |
URL: http://orgprints.org/21044/3/21044.pdf |
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| Jokumsen, Alfred; Høglund, Erik; Lund, Ivar; Madsen, Lone; Pedersen, Lars-Flemming; Nielsen, Max; Nielsen, Thorkild; Larsen, Villy J.; Larsen, Erling P.. |
| The aim of Robustfish project is to answer the following research questions: (1) Is it possible to select robust rainbow trout fry early in development before they enter the more cost intensive steps in the production cycle? (2) Does sustainable (non-fish based) dietary lipid sources affect stress resilience and immune-competence of the fry? (3) Related to (1) and (2): Is improved resistance to RTFS achieved? (4) How will the market respond to a significant increase in production of organic trout, i.e. consumer preferences and competiveness by companies in the value chain? RobustFish will strengthen the development of Danish organic trout production. In this respect the robustness of the fry to diseases is crucial, i.a. RTFS. The robustness of the fry... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Feeding and growth; Breeding and genetics; Health and welfare; Aquaculture. |
| Ano: 2014 |
URL: http://orgprints.org/27821/12/27821.pdf |
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| Green-Pedersen, Ditte; Hyldig, Grethe; Jacobsen, Charlotte; Baron, Caroline; Lund, Ivar; Nielsen, Henrik Hauch; Jokumsen, Alfred. |
| The aim of this work was to study whether the type of protein and lipid source in feed for organic Rainbow trout (Onchorhynchus mykiss) influenced the sensory quality. The protein sources were fishmeal and a matrix of organic vegetable plant mealsproteins, while the lipid sources were fish oil and organic oils of linseed, sunflower, rapeseed and grape seed, respectively. Sensory profiling was performed after 3, 5, 7 and 14 days of storage in ice. Besides sensory analysis also lipid profiles weare measured. The resultsed showed that the lipid type in the feed aeffected the sensory characteristics after 3 days of storage. Especially the trout that had grape seed oil in the feed had a different sensory profile than the trout that had fish oil in the feed.... |
| Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health Produce chain management. |
| Ano: 2011 |
URL: http://orgprints.org/19720/2/19720.pdf |
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| Green-Pedersen, Ditte; Hyldig, Grethe; Jacobsen, Charlotte; Baron, Caroline; Lund, Ivar; Nielsen, Henrik Hauch; Jokumsen, Alfred. |
| The aim of this work was to study whether the type of protein and lipid source in feed for organic Rainbow trout (Onchorhynchus mykiss) influenced the sensory quality. The protein sources were fishmeal and a matrix of organic vegetable plant mealsproteins, while the lipid sources were fish oil and organic oils of linseed, sunflower, rapeseed and grape seed, respectively. Sensory profiling was performed after 3, 5, 7 and 14 days of storage in ice. Besides sensory analysis also lipid profiles weare measured. The resultsed showed that the lipid type in the feed aeffected the sensory characteristics after 3 days of storage. Especially the trout that had grape seed oil in the feed had a different sensory profile than the trout that had fish oil in the feed.... |
| Tipo: Journal paper |
Palavras-chave: Food security; Food quality and human health Produce chain management. |
| Ano: 2014 |
URL: http://orgprints.org/21043/5/21043.pdf |
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| Lazado, Carlo Cabacang; Lund, Ivar; Skov, Peter V.; Jokumsen, Alfred; Gesto, Manuel; Nguyen, Huy Quang; Pedersen, Per Bovbjerg. |
| Circadian rhythms established by the endogenous clocks enable organisms to anticipate periodic and cyclic changes in their environment. This internal time-keeping system is highly conserved amongst animals and provides them with adaptive advantages as biological processes can be scheduled to occur at the most crucial times of the day. Circadian rhythm is emerging as an important regulator of immune functions. However, there is a paucity of information on the influence of this biological phenomenon in the immune mechanisms of teleost fish. A series of studies was conducted to investigate the circadian rhythms of systemic and mucosal innate immunity using model (i.e., zebrafish, Danio rerio) and non-model (i.e., permit, Trachinotus falcatus; rainbow trout,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Specific methods; Health and welfare. |
| Ano: 2017 |
URL: http://orgprints.org/32862/1/Lazado%20et%20al%20EAS%202017%20RED.pdf |
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| Lund, Ivar; Holm, Jørgen; Rasmussen, Hanne T.; Dalsgaard, Anne Johanne; Jokumsen, Alfred. |
| This study examined the effects on nutrient utilization and fish performance when replacing 16, 31, and 47% of fish meal protein (corresponding to replacing 15, 29 and 44%, respectively, of total dietary protein) with a fixed matrix of organic pea, horsebean and rapeseed plant protein concentrates (PPC) in a ratio of 1.07:1.00:0.66. Four iso-energetic and iso-nitrogenous diets were produced to include 0, 136, 274 or 410 g kg-1 of the organic PPC matrix, respectively. The organic protein ingredients were chosen based on their high protein content, and the matrix was established to mirror the amino acid composition of fish meal. The plant ingredients were dried, dehulled, grinded and air classified in accordance with the European Union Commission Regulation... |
| Tipo: Journal paper |
Palavras-chave: Recycling; Balancing and resource management Farm nutrient management Country reports. |
| Ano: 2011 |
URL: http://orgprints.org/19714/1/19714.pdf |
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| Lund, Ivar; Jokumsen, Alfred. |
| The Organic Regulation of fish farming states strong limitations on the sourcing of protein and fat ingredients in organic feed, i.e. aiming to phase out fish oil (FO) obtained from wild fish stocks and this may lead to a higher inclusion of other oils, especially vegetable oils (VO) as these are widely used. Several studies have been carried out to investigate the possibility of using plant-based diets in rearing fish. Only very few of them have challenged start feeding fish with diets in which both fishmeal (FM) and FO have been substituted, while studies on larger grow out fish have shown that a combined replacement of FM and fish oil (FO) is feasible without detrimental effects in growth performance when the theoretical requirements for essential... |
| Tipo: Report |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2018 |
URL: http://orgprints.org/33387/1/D.3.2.1.docx |
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| Registros recuperados: 13 | |
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