NO341934B1 - Device for processing farmed fish - Google Patents
Device for processing farmed fish Download PDFInfo
- Publication number
- NO341934B1 NO341934B1 NO20160406A NO20160406A NO341934B1 NO 341934 B1 NO341934 B1 NO 341934B1 NO 20160406 A NO20160406 A NO 20160406A NO 20160406 A NO20160406 A NO 20160406A NO 341934 B1 NO341934 B1 NO 341934B1
- Authority
- NO
- Norway
- Prior art keywords
- water
- fish
- inlet
- process water
- separator
- Prior art date
Links
- 241000251468 Actinopterygii Species 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 201000010099 disease Diseases 0.000 claims description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 2
- 244000045947 parasite Species 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 2
- 239000013505 freshwater Substances 0.000 claims 1
- 235000019688 fish Nutrition 0.000 abstract description 46
- 241001674048 Phthiraptera Species 0.000 abstract description 19
- 241000972773 Aulopiformes Species 0.000 abstract description 14
- 235000019515 salmon Nutrition 0.000 abstract description 13
- 230000006378 damage Effects 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract 1
- 241000894007 species Species 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 241001247234 Lepeophtheirus salmonis Species 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 238000009313 farming Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000238424 Crustacea Species 0.000 description 1
- 241001522191 Gyrodactylus salaris Species 0.000 description 1
- 206010061217 Infestation Diseases 0.000 description 1
- 208000035415 Reinfection Diseases 0.000 description 1
- 241000277331 Salmonidae Species 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000028454 lice infestation Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 238000009372 pisciculture Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
- A01K61/13—Prevention or treatment of fish diseases
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
Det er beskrevet et arrangement for avlusing av fisk i merd ved nedkjøling av prosessvann (salt eller fersk) til under sjøtemperatur i lukket system. Lusen får et kaldtvannssjokk og slipper. Laksen går videre til en merd, og lusa går i filter. Dette er en skånsom og velegnet metode for avlusning i sårbare miljøer og økosystemer. Denne prosessen skader ikke fisken på noen måte, eller noen av de andre artene som lever i nærheten av avlusningsom rådet.An arrangement is described for the de-feeding of fish in cages by cooling process water (salt or fresh) to below sea temperature in a closed system. The lice get a cold water shock and release. The salmon goes on to a cage and the lice go into the filter. This is a gentle and well-suited method for debugging in vulnerable environments and ecosystems. This process does not harm the fish in any way, or any of the other species that live near the debarking area.
Description
Oppfinnelsens område Field of the invention
Foreliggende oppfinnelse vedrører en anordning og fremgangsmåte for fjerning av lakselus på fisk i oppdrettsanlegg. The present invention relates to a device and method for removing salmon lice from fish in aquaculture facilities.
Bakgrunn Background
Oppdrettsnæringen er en viktig primærnæring som sysselsetter mange personer og som skaper store verdier i form av arbeidsplasser regionalt og lokalt. Denne næringen blir imidlertid angrepet av organismer som lakselus (Lepeophtheirus salmonis), men også av andre parasitter som gyro (gyrodactylus salaris) og sykdommer som AGD. Lakselus er et krepsdyr som formerer seg på laksefisk og lever av slimhinnen og blod fra fisken. Lakselus påfører oppdrettsnæringen store økonomiske tap årlig samtidig med at lusa påfører fisken store smerter og lidelser. Lakselus angrep kan være dødelig for fisken om den ikke blir avluset. Lakselus kan angripe et oppdrettsanlegg så kraftig at nødslakting er den eneste muligheten til å bringe angrepet under kontroll. Levende lakselus kan svømme relativt raskt og kan også hoppe over fra fisk til fisk slik at det er helt nødvendig å bekjempe lusa effektivt, men på en skånsom måte for laks og omgivelsene. The farming industry is an important primary industry which employs many people and which creates great value in the form of jobs regionally and locally. However, this industry is attacked by organisms such as salmon lice (Lepeophtheirus salmonis), but also by other parasites such as gyro (gyrodactylus salaris) and diseases such as AGD. Salmon louse is a crustacean that reproduces on salmon fish and feeds on the mucous membrane and blood from the fish. Salmon lice cause large financial losses to the farming industry every year, while the lice cause great pain and suffering to the fish. Salmon lice infestation can be fatal for the fish if it is not de-liced. Salmon lice can attack a farm so heavily that emergency culling is the only option to bring the infestation under control. Live salmon lice can swim relatively quickly and can also jump from fish to fish so that it is absolutely necessary to fight lice effectively, but in a gentle way for salmon and the environment.
En metode som brukes i dag for behandling av fisk for lakselus innebærer at fisken føres inn i et lukket basseng hvor det tilføres kjemikalier som dreper lusa. Bassenget kan dannes ved at det trekkes en duk utenpå ei vanlig fiskemære. Ellers kan det brukes faste beholdere eller brønnbåter. Svakheten ved en slik metode er at behandlingen er en påkjenning for fisken og at kjemikaliene etterpå pumpes ut i naturen og belaster denne. A method used today to treat fish for salmon lice involves placing the fish in a closed pool where chemicals are added that kill the lice. The pool can be formed by pulling a sheet over a normal fish pond. Otherwise, fixed containers or well boats can be used. The weakness of such a method is that the treatment is stressful for the fish and that the chemicals are then pumped out into nature and burden it.
Det finnes imidlertid behandlingsmetoder hvor man unngår bruk av kjemikalier. Fra norsk patent 332298 er det kjent en metode hvor fisken behandles med lunkent vann (30 °C) i en kort periode på omtrent 30 sek. Det varme vannet får lusa til å slippe fisken fort. Fisken føres fra ei mære til ei anna mære gjennom et nedbøyd rør, nærmest en stor vannlås, hvor det er oppvarmet vann. Denne konstruksjonen tillater at fisken behandles i en kontinuerlig prosess mens den pumpes over mellom mærene. Varmebehandlingen er imidlertid tilbøyelig til å skade slim/fettlaget utenpå fisken. Videre medfører behandlingen at fisken blir stresset. Stress er uheldig for oppdrettsfisk idet det medfører høyere dødelighet. Både varmen og pumpingen i seg selv medfører at fisken blir stresset. However, there are treatment methods that avoid the use of chemicals. From Norwegian patent 332298, a method is known where the fish is treated with lukewarm water (30 °C) for a short period of approximately 30 seconds. The warm water causes the lice to release the fish quickly. The fish is taken from one mare to another mare through a bent pipe, almost a large water lock, where the water is heated. This construction allows the fish to be processed in a continuous process as it is pumped between the mares. However, the heat treatment tends to damage the mucus/fat layer on the outside of the fish. Furthermore, the treatment causes the fish to become stressed. Stress is bad for farmed fish as it leads to higher mortality. Both the heat and the pumping itself cause the fish to become stressed.
Fisk blir også behandlet for lakselus ved spyling. Fisken spyles da med sterke vannstråler. Vannstrålene er rettet slik at de spyler mot retningen av skjellaget på fisken. Igjen medfører behandlingen at fisken blir stresset. Fish are also treated for salmon lice during rinsing. The fish is then flushed with strong jets of water. The water jets are directed so that they flush against the direction of the shell layer on the fish. Again, the treatment causes the fish to become stressed.
WO 2014/129908 beskriver en annen fremgangsmåte for avlusing av fisk. Dokumentet er sentrert rundt kjemiske metoder for fjerning av lus, blant annet med oksygenradikaler slik som hydrogenperoksyd og ozon. Det er nevnt at behandlingsvannet kan avkjøles med en kjøler. Grunnen er at ved høye temperaturer vil hydogenperoksyd og ozon få for høy aktivitet og direkte skade fisken. Behandlingsvannet blir derfor avkjølt for å skåne fisken. WO 2014/129908 describes another method for deworming fish. The document is centered around chemical methods for removing lice, including with oxygen radicals such as hydrogen peroxide and ozone. It is mentioned that the treatment water can be cooled with a cooler. The reason is that at high temperatures hydrogen peroxide and ozone will become too active and directly harm the fish. The treatment water is therefore cooled to spare the fish.
Sammenfatning av oppfinnelsen Summary of the Invention
Det er en hensikt med foreliggende oppfinnelse å frembringe en metode for avlusning av fisk som er mer skånsom mot fisken enn kjente metoder, som er energieffektiv og som ikke medfører forurensing av omgivelsene. It is a purpose of the present invention to produce a method for de-liceing fish which is more gentle on the fish than known methods, which is energy efficient and which does not cause pollution of the surroundings.
Dette oppnås med en anordning og fremgangsmåte slik det fremgår av de etterfølgende patentkrav. This is achieved with a device and method as shown in the subsequent patent claims.
Detaljert beskrivelse Detailed description
Oppfinnelsen skal nå beskrives i detalj med henvisning til den vedføyde tegningen. The invention will now be described in detail with reference to the attached drawing.
Figuren er en prinsippskisse som viser et avlusningsanlegg ifølge oppfinnelsen. Fisken som skal behandles befinner seg i ei første mære B. The figure is a schematic diagram showing a de-lice system according to the invention. The fish to be treated is in a first mare B.
Oppfinnelsen er basert på at fisken behandles med avkjølt vann. Sjokket når fisken føres inn i det avkjølte vannet får lusa til å slippe fisken. For å øke virkningen kan vannet i tillegg være ferskt, og eventuelt tilsatt noe kjemikalium. The invention is based on treating the fish with chilled water. The shock when the fish is introduced into the cooled water causes the lice to release the fish. In order to increase the effect, the water can also be fresh, and optionally some chemicals have been added.
Anlegget omfatter en sugeslange 1 som er koblet til en pumpestasjon 2 for å hente fiskeholdig vann fra mæra B opp til en første vannutskiller 3. I vannutskilleren 3 siles vannet av og går i returslange 12 til et lusefilter 13 før vannet går til sjø igjen. Laksen går fra den første vannutskilleren 3 og inn i et prosessrør 4 som inneholder prosessvann, dvs. væsken som fisken behandles med. Prosessrøret er sikksakkformet med en inngangsdel som ligger på et første øverste nivå, idet røret er foldet og ført tilbake på undersiden, hvorpå det igjen vender og er foldet tilbake på et nederste nivå. På utgangen av prosessrøret 4 er det en andre vannutskiller 5. Her skilles prosessvann og fisk, og fisken returnerer enten til mære B i returslange 11 eller føres til ei anna mære C hvor det bare er avlust fisk, dette for å unngå reinfeksjon. The facility includes a suction hose 1 which is connected to a pump station 2 to retrieve fish-containing water from lake B up to a first water separator 3. In the water separator 3, the water is filtered off and goes in a return hose 12 to a lice filter 13 before the water goes back to sea. The salmon goes from the first water separator 3 into a process pipe 4 which contains process water, i.e. the liquid with which the fish is treated. The process pipe is zigzag-shaped with an entrance part located on a first upper level, the pipe being folded and brought back on the underside, after which it again turns and is folded back on a lower level. At the output of the process pipe 4, there is a second water separator 5. Here, process water and fish are separated, and the fish either returns to mare B in the return hose 11 or is taken to another mare C where only fish have been degassed, this to avoid re-infection.
Prosessvannet går fra den andre vannutskilleren 5 ned til lusefilter 6 og 7. Etter lusefilteret eller filtrene 6, 7 er det anordnet en sirkulasjonspumpe 8 som pumper prosessvannet i en tilnærmet lukket krets rundt prosessrøret 4. I den lukkede kretsen er det en vanntank 9 med installert kjøleanlegg (ikke vist). Kjøleanlegget er anordnet til å holde temperaturen i prosessvannet kaldere enn i mæra B, slik at fisken opplever et kuldesjokk når den kommer inn i prosessrøret. For eksempel laks og ørret er i utgangspunktet kaldtvannsfisk og håndterer temperaturnedgangen uten problemer. Lakselusa vil imidlertid ikke takle temperatursjokket uten videre, og slipper taket i fisken. Den vil følge vannstrømmen videre og fanges opp av filtrene 6, 7. Varmen fra kjøleanlegget kan eventuelt brukes til oppvarming andre steder i fiskeoppdrettsanlegget. The process water goes from the second water separator 5 down to lice filters 6 and 7. After the lice filter or filters 6, 7, a circulation pump 8 is arranged which pumps the process water in an almost closed circuit around the process pipe 4. In the closed circuit there is a water tank 9 with installed cooling system (not shown). The cooling system is arranged to keep the temperature in the process water colder than in mæra B, so that the fish experiences a cold shock when it enters the process pipe. For example, salmon and trout are basically cold-water fish and handle the drop in temperature without any problems. However, the salmon lice will not cope with the temperature shock without further ado, and let go of the fish. It will continue to follow the water flow and be captured by the filters 6, 7. The heat from the cooling system can possibly be used for heating elsewhere in the fish farming system.
Siden behandlingen av fisken skjer i en tilnærmet lukket krets, må vannet tilføres oksygen fra oksygenkilden 14. Oksygenkilden er her anordnet etter vanntanken 9, men rekkefølgen av filtre, sirkulasjonspumpe, vanntank/kjøler og oksygentilførsel kan varieres etter hva man finner praktisk. Since the processing of the fish takes place in an almost closed circuit, the water must be supplied with oxygen from the oxygen source 14. The oxygen source is here arranged after the water tank 9, but the order of filters, circulation pump, water tank/cooler and oxygen supply can be varied according to what is practical.
Oppfinnelsen kan også realiseres i en alternativ utførelse hvor kaldt vann tilføres fra en ekstern kilde, for eksempel ved at det pumpes opp fra større dyp i en fjord, eller ved at det tilføres fra et vassdrag. Det siste medfører at vannet vil være ferskt, hvilket kan ha andre fordeler. Anlegget vil da også virke ved utbrudd av AGD. Vannet i tanken 9 bør da være ferskt i tillegg til at det er kjølt slik at vi får dobbel effekt av prosessen. Ved en slik løsning blir prosessvannet sluppet ut til omgivende sjø etter filtrene 6, 7. Likeledes vil det da som oftest være unødvendig å tilføre oksygen. The invention can also be realized in an alternative embodiment where cold water is supplied from an external source, for example by pumping it up from greater depths in a fjord, or by supplying it from a watercourse. The latter means that the water will be fresh, which can have other advantages. The plant will then also work in the event of an AGD outbreak. The water in tank 9 should then be fresh in addition to being chilled so that we get double the effect of the process. With such a solution, the process water is released into the surrounding sea after the filters 6, 7. Likewise, it will then usually be unnecessary to add oxygen.
Vannet i prosessrøret 4 bør være vesentlig lavere enn kroppstemperaturen til fisken. Temperaturforskjellen kan ligge i området 5-20 °C og fortrinnsvis i området 5-10 °C og mest fortrinnsvis innen 5-7 °C. Dette temperaturområdet er også avhengig av omgivelsestemperaturen, dvs. temperaturen i mæra. Eksempelvis kan det ved en vanntemperatur på 12 °C være aktuelt å bruke en temperatur på 5-6 °C i prosessrøret 4. Ved vesentlig lavere temperatur i mæra kan det være vanskelig å gjennomføre avlusing. Et mulig alternativ i et slikt tilfelle kan være at man bruker to prosessanlegg, hvor fisken først behandles med noe oppvarmet vann hvor temperaturen er hevet med noen få grader, før fisken deretter behandles med avkjølt vann. Ved å bruke moderat oppvarmet vann vil man hindre skader på fisken. De to prosessanleggene kan være koblet sammen på den måten at varmen fra kjøleanlegget i det siste prosessanlegget brukes til å varme opp vannet i det første prosessanlegget. The water in the process pipe 4 should be significantly lower than the body temperature of the fish. The temperature difference can lie in the range 5-20 °C and preferably in the range 5-10 °C and most preferably within 5-7 °C. This temperature range also depends on the ambient temperature, i.e. the temperature in the mæra. For example, at a water temperature of 12 °C, it may be relevant to use a temperature of 5-6 °C in the process pipe 4. At a significantly lower temperature in the mæra, it may be difficult to carry out de-lice. A possible alternative in such a case could be to use two processing facilities, where the fish is first treated with slightly heated water where the temperature has been raised by a few degrees, before the fish is then treated with cooled water. By using moderately heated water, you will prevent damage to the fish. The two processing plants can be connected in such a way that the heat from the cooling plant in the last processing plant is used to heat the water in the first processing plant.
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20160406A NO341934B1 (en) | 2016-03-09 | 2016-03-09 | Device for processing farmed fish |
GB1703767.2A GB2550024A (en) | 2016-03-09 | 2017-03-09 | Arrangement for the treatment of aquaculture fish |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20160406A NO341934B1 (en) | 2016-03-09 | 2016-03-09 | Device for processing farmed fish |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20160406A1 NO20160406A1 (en) | 2017-09-11 |
NO341934B1 true NO341934B1 (en) | 2018-02-26 |
Family
ID=58605547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20160406A NO341934B1 (en) | 2016-03-09 | 2016-03-09 | Device for processing farmed fish |
Country Status (2)
Country | Link |
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GB (1) | GB2550024A (en) |
NO (1) | NO341934B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109588363A (en) * | 2019-02-18 | 2019-04-09 | 正丰源生物科技(苏州)有限公司 | A kind of dynamic maintain of batch production aquatic products is grown and disease control system |
NO346737B1 (en) * | 2019-10-15 | 2022-12-12 | Aquafarming As | Method and system for removing parasites on marine organisms |
NO20231263A1 (en) * | 2021-04-27 | 2023-11-21 | Hordalaks As | Arrangement and method for treatment of fish |
NO347345B1 (en) * | 2022-12-09 | 2023-09-25 | Nofima As | Frost cleaning of sea lice |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO304171B1 (en) * | 1996-12-02 | 1998-11-09 | John Peter Andorsen | Method and apparatus for removing external parasites from salmon |
NO332298B1 (en) * | 2011-04-27 | 2012-08-20 | Ocea As | Lice treatment system and associated method for the treatment of lice |
NO20130318A1 (en) * | 2013-02-26 | 2014-08-27 | Stranda Prolog As | Apparatus, method and system for processing farmed fish |
WO2014129908A1 (en) * | 2013-02-21 | 2014-08-28 | Stranda Prolog As | Device and system for treatment of fish |
WO2015143549A1 (en) * | 2014-03-28 | 2015-10-01 | Cooke Aquaculture Inc. | Method and apparatus for removal of sea lice from live fish |
-
2016
- 2016-03-09 NO NO20160406A patent/NO341934B1/en unknown
-
2017
- 2017-03-09 GB GB1703767.2A patent/GB2550024A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO304171B1 (en) * | 1996-12-02 | 1998-11-09 | John Peter Andorsen | Method and apparatus for removing external parasites from salmon |
NO332298B1 (en) * | 2011-04-27 | 2012-08-20 | Ocea As | Lice treatment system and associated method for the treatment of lice |
WO2014129908A1 (en) * | 2013-02-21 | 2014-08-28 | Stranda Prolog As | Device and system for treatment of fish |
NO20130318A1 (en) * | 2013-02-26 | 2014-08-27 | Stranda Prolog As | Apparatus, method and system for processing farmed fish |
WO2015143549A1 (en) * | 2014-03-28 | 2015-10-01 | Cooke Aquaculture Inc. | Method and apparatus for removal of sea lice from live fish |
Also Published As
Publication number | Publication date |
---|---|
GB2550024A (en) | 2017-11-08 |
NO20160406A1 (en) | 2017-09-11 |
GB201703767D0 (en) | 2017-04-26 |
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