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| Registros recuperados: 63 | |
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| Lembo, Giuseppe; Jokumsen, Alfred; Spedicato, Maria Teresa; Facchini, Maria Teresa; Bitetto, Isabella. |
| Participatory management is widely recognised as a working method of paramount importance, based on the principles of knowledge sharing, accountability and legitimacy. Hence, it is broadly considered suitable for addressing issues related to the sustainable development of the seafood industry, and specifically, of the aquaculture system. A survey focused on the current EU regulatory framework was carried out to elicit stakeholders’ preferences, knowledge and experience on key issues for the development of organic aquaculture, supported by science-based regulations. The survey was completed by 65 stakeholders belonging to several categories, and it was supported by the implementation of the Analytic Hierarchy Process method. Stakeholders’ preferences were... |
| Tipo: Journal paper |
Palavras-chave: Consumer issues; Aquaculture; European Union; Regulation. |
| Ano: 2018 |
URL: http://orgprints.org/35348/1/JMPO_2018_Organic_aquaculture.pdf |
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| Hyldig, Grethe; Green-Pedersen, Ditte Pedersen; Jacobsen, Charlotte; Baron, Caroline; Jokumsen, Alfred; Nielsen, Henrik Hauch. |
| 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: Conference paper, poster, etc. |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2011 |
URL: http://orgprints.org/19721/2/19721.pdf |
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| Skov, Peter V.; Joao de Jesus Gregersen, Kim; Gesto, Manuel; Jokumsen, Alfred. |
| The timing with which salmonid larvae emerge from their gravel nests is thought to be correlated with a particular suite of behavioural and physiological traits that correspond to the stress coping style of the individual. Among these traits, aggressiveness, dominance and resilience to stress, are potentially interesting to exploit in aquaculture production. In the present study a series of experiments were performed, with the purpose of characterising behavioural, metabolic and production related traits in rainbow trout juveniles from different emergence fractions. Newly hatched rainbow trout were sorted according to their emergence time from an artificial nest. The early, middle, and late fractions were retained and assessed for their physiological... |
| Tipo: Journal paper |
Palavras-chave: Feeding and growth; Health and welfare. |
| Ano: 2019 |
URL: http://orgprints.org/36307/1/Skov%20et%20al%20Comp%20Biochem%20Physiol%20A.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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| Jokumsen, Alfred. |
| Efterspørgslen efter økologiske fisk er i kraftig vækst. Der er p.t. fem økologiske fiskeopdrættere i Danmark, men flere er under omlægning til økologisk drift. En af de største udfordringer for de danske opdrættere af økologisk fisk har været at skaffe et foder, som opfyldte de danske krav til økologisk produktion. Især behovet for konkurrencedygtige vegetabilske proteinkilder med et højt proteinindhold og relevant aminosyresammensætning, i forhold til fiskemel, er centralt for udviklingen af den økologiske fiskeproduktion i Danmark. Dyrkede planteafgrøder har generelt et lavere proteinindhold end fiskemel. Derfor kan kun en begrænset del af fiskemelet udskiftes med planteprotein. Størrelsen af denne andel er i høj grad bestemt af forskellige... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Food security; Food quality and human health. |
| Ano: 2008 |
URL: http://orgprints.org/13889/1/13889.pdf |
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| Jokumsen, Alfred. |
| 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: Other |
Palavras-chave: Farm economics; Feeding and growth; Social aspects; Health and welfare; Environmental aspects. |
| Ano: 2018 |
URL: http://orgprints.org/33733/7/RobustFish%20afsluttende%20publikation_FINAL_web.pdf |
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| Jokumsen, Alfred. |
| Opdræt af regnbueørred, især økologisk ørred, er kritisk udfordret på grund af relativt mange hud/gælle infektioner forårsaget af forskellige patogener, især parasitten Costia (Ichthyobodo necator), som ultimativt er dødelig for yngel/mindre fisk. Dette kan være en trussel mod tilstrækkelig udbud af økologisk yngel til videre produktion, da regelsættet for økologisk akvakultur kræver 100% økologisk yngel. Endvidere forårsager en såkaldt ny ”Rickettsia-lignende" bakterie “rødpletsyge” (RMS), dvs. røde pletter i huden, som medfører ned-klassificering/kassation af op til 30% af fiskene ved slagtning. Behandling ved brug af antibiotika/hjælpestoffer er kun muligt i begrænset omfang i økologisk ørred produktion. Løsninger til forebyggelse og/eller behandling af... |
| Tipo: Web product |
Palavras-chave: Health and welfare. |
| Ano: 2019 |
URL: http://orgprints.org/35548/1/ShelterFish_Folder.pdf |
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| Jokumsen, Alfred. |
| De danske økologiske landmænd kan se frem til at afsætte en del af deres proteinafgrøder til foder til økologiske opdrætsfisk. Fiskemel udgør p.t. den primære proteinkilde i foder til økologiske fisk. Fiskemelet fremstilles af industrifisk fra bæredygtige bestande, men dels er det ikke økologisk og dels er fiskemel en begrænset ressource. Der er således behov for at erstatte så meget som muligt af fiskemels-proteinet med konkurrencedygtige økologiske vegetabilske proteinkilder, der både har et højt proteinindhold og en relevant aminosyresammensætning i forhold til fiskemel. I modsætning til konventionelt foder må der nemlig ikke optimeres ved at tilsætte kunstige aminosyrer til foder til økologiske fisk. |
| Tipo: Newspaper or magazine article |
Palavras-chave: Farm nutrient management; Health and welfare; Feeding and growth. |
| Ano: 2008 |
URL: http://orgprints.org/15427/1/15427.doc |
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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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| Jokumsen, Alfred. |
| RobustFish vil styrke udviklingen af økologisk ørred produktion i Danmark. Ifølge EU regelsættet for økologisk akvakultur skal den økologiske fiskeproduktion udelukkende være baseret på økologisk yngel fra 2016. Da medicinbehandling af økologisk ørred er uønsket og kun er tilladt i stærkt begrænset omfang, er ynglens robusthed overfor bl.a. den alvorligste yngelsygdom i dansk ørredopdræt, YDS (”yngeldødeligheds-syndrom”), særdeles vigtig. Ynglens robusthed vil blive målt i forhold til ynglens swim-up adfærd (first feeding) og performance under opvæksten. Indholdet af specifikke essentielle Ω-3 fedtsyrer i foderet til ynglen er særlig vigtig for fiskens vækst, sundhed og velfærd, herunder robusthed overfor stress. Dette skal undersøges ved stress tests samt... |
| Tipo: Newspaper or magazine article |
Palavras-chave: "Organics" in general; Breeding and genetics; Health and welfare. |
| Ano: 2014 |
URL: http://orgprints.org/28124/3/28124.pdf |
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| Jokumsen, Alfred. |
| RobustFish will strengthen the development of Danish organic trout production. According to the EU Regulation on Organic Aquaculture, the fish production shall exclusively be based on organic fry from 2016. Particularly, in organic farming, medication is only allowed within very strict limits. Therefore, the robustness of the fry to diseases is crucial. Especially, this concerns the most serious trout fry disease in Danish aquaculture, Rainbow Trout Fry Syndrome (RTFS). The robustness of the fry seems to be related to larval developmental rate and to the dietary content of specific Ω-3 fatty acids (HUFAs). Stress and RTFS tests are going to be performed to investigate if these two factors can be included in strategies to increase the robustness of the fry.... |
| Tipo: Newspaper or magazine article |
Palavras-chave: "Organics" in general; Farm economics; Feeding and growth; Breeding and genetics; Health and welfare; Consumer issues; Regulation. |
| Ano: 2015 |
URL: http://orgprints.org/28259/12/28259.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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| 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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| Jokumsen, Alfred. |
| Organic farming of line mussels makes a significant footprint in the development of the Danish Aquaculture sector, targeting 10 percent of the production being organic by 2018. Currently nine production units have been approved for a total production of some 3,500 t/yr. Danish production of line mussels takes place in the Limfjorden (North West Jutland), where the main producer currently is Seafood Limfjord in cooperation with the mussel processing company Vildsund Blue in Nykøbing Mors. Mussels are farmed on lines and in big socks and, because they are reared closer to the surface than wild mussels, more algae and other seston is available to support growth. Naturally occurring mussel spat settle on the lines each year and harvesting is done by boat.... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Aquaculture. |
| Ano: 2015 |
URL: http://orgprints.org/29436/1/World%20Aquaculture_September%202015%20Jokumsen.pdf |
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| Jokumsen, Alfred. |
| Opdræt af regnbueørred, især økologisk ørred, er kritisk udfordret på grund af relativt mange hud/gælle infektioner forårsaget af forskellige patogener, især parasitten Costia (Ichthyobodo necator), som ultimativt er dødelig for yngel/mindre fisk. Dette kan være en trussel mod tilstrækkelig udbud af økologisk yngel til videre produktion, da regelsættet for økologisk akvakultur kræver 100% økologisk yngel. Endvidere forårsager en såkaldt ny ”Rickettsia-lignende" bakterie “rødpletsyge” (RMS), dvs. røde pletter i huden, som medfører ned-klassificering/kassation af op til 30% af fiskene ved slagtning. Behandling ved brug af antibiotika/hjælpestoffer er kun muligt i begrænset omfang i økologisk ørred produktion. Løsninger til forebyggelse og/eller behandling af... |
| Tipo: Web product |
Palavras-chave: Aquaculture. |
| Ano: 2019 |
URL: http://orgprints.org/35557/1/Parasitter%20sp%C3%A6nder%20ben%20for%20%C3%B8kologisk%20%C3%B8rredproduktion.pdf |
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| Registros recuperados: 63 | |
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