WO2022214740A1 - Aqua farming system and use - Google Patents

Aqua farming system and use Download PDF

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Publication number
WO2022214740A1
WO2022214740A1 PCT/FI2022/050218 FI2022050218W WO2022214740A1 WO 2022214740 A1 WO2022214740 A1 WO 2022214740A1 FI 2022050218 W FI2022050218 W FI 2022050218W WO 2022214740 A1 WO2022214740 A1 WO 2022214740A1
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WO
WIPO (PCT)
Prior art keywords
rosin
metal salt
alkaline
alkali metal
earth metal
Prior art date
Application number
PCT/FI2022/050218
Other languages
French (fr)
Inventor
Tuomas Kiikka
Kari Alha
Original Assignee
Premix Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of WO2022214740A1 publication Critical patent/WO2022214740A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
    • A01N65/06—Coniferophyta [gymnosperms], e.g. cypress
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; 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
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing carboxylic groups or thio analogues thereof, directly attached by the carbon atom to a cycloaliphatic ring; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P7/00—Arthropodicides

Definitions

  • the invention relates to an aqua farming system.
  • the invention further relates to treatment of Ichthy- ophthirius multifiliis .
  • the invention further relates to treatment of Ichthyobodo necator.
  • the invention further relates to treatment of Lepeo- phtheirus salmonis .
  • the invention still further relates to treatment of virus es, such as viruses causing Infectious Haematopoietic Ne crosis (IHN), Pancreas Disease (PD), Sleeping Disease (SD), Viral Haemorrhagic Septicaemia (VHS), or Infectious Salmon Anemia (ISA).
  • virus es such as viruses causing Infectious Haematopoietic Ne crosis (IHN), Pancreas Disease (PD), Sleeping Disease (SD), Viral Haemorrhagic Septicaemia (VHS), or Infectious Salmon Anemia (ISA).
  • an aqua farming system comprising an active agent for inhibiting the growth of parasites and viruses in said water system, wherein said active agent comprises at least one of alkali metal salt of rosin and alkaline-earth metal salt of ros in.
  • An advantage is that an aqua farming system for protecting farmed species and having ability to resist harmful organ isms as well as harmful viruses may be achieved by a sub stance that is harmless to humans.
  • Alkali metal salt of rosin and alkaline-earth metal salt of rosin, i.e. rosinates, are widely used as detergents in household cleaning purposes. They are available for exam ple under brand names of Tolu Manty from Henkel and Manty- saippua from Foxtel, and Dercinate 50 TO from Les Derives Resiniques et Terpeniques (DRT), among others. These prod ucts are claimed to contain typically 15 - 30 wt.-% rosinate according to the manufacturers.
  • aquaculture also known as aquaculture
  • aquaculture means in this description farming of fish, fish eggs in hatcheries, crustaceans, molluscs, aquatic plants, algae in freshwater or saltwater and under controlled condi tions.
  • Figure 1 is a schematic view of an aqua farming system
  • FIG. 2 illustrates results of an example.
  • An aqua farming system comprises an active agent for inhibiting the growth of certain dis eases and/or viruses harmful to farmed species.
  • Said ac tive agent comprises at least one of alkali metal salt of rosin and alkaline-earth metal salt of rosin.
  • said alkali metal salt of rosin and/or alkaline-earth metal salt of rosin is included in Tall Oil Soap (TOS).
  • TOS is typically a by-product of the Kraft process of wood pulp manufacture when pulping mainly co niferous trees.
  • TOS may be marketed and sold under trade names Tolu Manty, Mantysaippua, and Dercinate 50 TO, for instance.
  • the alkali metal salt of rosin and/or alkaline-earth metal salt of rosin is/are of purified, distilled fraction of Tall Oil Soap.
  • FIG. 1 is a schematic view of an aqua farming system.
  • the aqua farming system 100 is a system for growing edible fish or shellfish products.
  • the aqua farming system 100 comprises a water basin 2, a filtering element, water pipes 3, 4 and 5, such as a water pipe 3 for feeding recirculated water in the basin 2, a pipe 4 feeding water from the basin to the filtering element, and/or a pipe 5 feeding fresh water in the aqua farming system 100 from outside thereof.
  • the water basin 2 is an artificial ba sin. In an embodiment, the water basin 2 is isolated from natural waters.
  • the farmed species is contacted a short residence time with the active agent.
  • the volume of water in the water basin 2 is con trolled such that water level can be lowered from a first water level WL 1 to a second water level WL 2.
  • the water can be removed by e.g. a drain 6.
  • the first water level WL 1 corresponds to a normal volume of water kept most of the time in the water basin 2, i.e. a normal state of use.
  • the amount of the farmed species is 3 kg - 4 kg per m 3 of water when the first water level WL 1 is prevailing.
  • the second water level WL 2 corresponds to a water level that allows the farmed species to be sub merged, but not much more, i.e. a state of lowered water.
  • the second water level WL 2 corresponds to a water volume that is 25 % - 50 % of water volume in the first water level WL 1.
  • said per centage is in range of 30 % - 40 %.
  • said percentage is in range of 30 % - 35 %.
  • water depth in the second water level WL 2 is in range of 20 cm - 50 cm. In an embodiment, said wa ter depth is in range of 25 cm - 30 cm. In an embodiment, the water level is first decreased from the first water level WL 1 to the second water level WL 2 and following this, the active agent is added to the de- creased volume of water.
  • the active agent is added as a liquid or solution to the water.
  • An advantage is that the active agent is readily soluble in water.
  • the active agent is added as a powder in water.
  • the active agent is added such that the concentration of the active agent in water is in range of 0.05 weight-% - 4 weight-%.
  • the concentration has to be high enough for being effective against the parasites and viruses, but below a level that may be harmful to the farmed species.
  • a preferable amount of the active agent depends on various parameters. For example, regarding fishes, the amount depends on at least the next parame- ters: species of fish, size or size distribution of indi vidual fishes, temperature of water, and a contact time of the active agent and fishes.
  • the residence time of the species under influence of the active agent is in range of 5 min - 30 min. In an embodiment, the residence time is in range of 10 min - 15 min.
  • white fishes Coregonus lavaretus
  • trouts Salmo trutta m. lacustris
  • white fish was an extremely sensi tive species to formalin - in such an extent that formalin treatment usually causes death of white fish.
  • water is not changed or circulated through the filtering element during the residence time of the species under influence of the active agent.
  • the water may be circulated or moved actively in the water basin during said influence of the active agent.
  • water is changed or circulated through the filtering element 1 during the residence time of the spe cies under influence of the active agent, and the concen tration of the active agent is controlled, if necessary.
  • water is changed during the residence time of the species under influence of the ac tive agent by feeding fresh water from outside of the aqua farming system 100, draining water from the water basin, and adding the active agent in order to keep its concen tration on desired level.
  • the treating of the the farmed species with the active agent takes place in a separate bathing bucket or like.
  • the farmed species to be treated are transferred to the bathing bucket just for the treatment, and then removed from the bathing bucket.
  • the aqua farming system 100 comprises a gas tube 7 that is connected to a gas source (not shown) for feeding oxygenous gas, such as air, in the water.
  • a gas source not shown
  • oxygenous gas such as air
  • alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of Ichthyophthirius multifiliis (ICH) and/or preventing ICH infestation.
  • ICH is a parasitic ciliate that can infect most freshwater fish species.
  • ICH causes a disease common ly referred to as white spot disease.
  • alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of Ichthyobodo necator (Costia necatrix) and/or preventing infestation thereof.
  • Costia necatrix is a protozoan that attaches to the skin and gills of sweet water fish and in troduces severe slimy covers often leading to death due to the lack of oxygen.
  • alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of Lepeophtheirus salmonis (Salmon louse) and/or preventing infestation thereof.
  • Salmon louse is a parasite living mostly on salmon but is also sometimes found on the three- spined stickleback. Salmon louse can cause physical damage to the fish's fins, skin erosion, constant bleeding, and open wounds creating pathways for other pathogens. If ex isting large populations on a fish, Salmon louse as such can lead to death.
  • alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment and/or preventing of diseases caused by viruses, such as enveloped viruses.
  • diseases include, for example, In fectious Haematopoietic Necrosis (IHN), Viral Haemorrhagic Septicaemia (VHS), or Infectious Salmon Anemia (ISA).
  • IHN In fectious Haematopoietic Necrosis
  • VHS Viral Haemorrhagic Septicaemia
  • ISA Infectious Salmon Anemia
  • alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of at least one of Pancreas Disease (PD) and Sleeping Disease (SD) caused by salmonid alphavirus (SAV).
  • PD Pancreas Disease
  • SD Sleeping Disease
  • FIG. 2 illustrates results of Example 1.
  • TOS based sodi um salt of rosin, Dercinate 50 TO named as D-rosin in figure, was tested with quantitative polymerase chain re action (qPCR) method against enveloped virus, human corona virus with 1 wt.-% concentration.
  • Cell viability (absorb ance on wave number 570) is shown on Y-axis.
  • Virus control is showing viability of cells exposed to the virus and without the treatment with the TOS based so dium salt of rosin.
  • the virus was totally deactivated in 5 minutes.

Abstract

An aqua farming system comprising an active agent for inhibiting the growth of parasites and viruses in said water system. The said active agent comprises at least one of alkali metal salt of rosin and alkaline-earth metal salt of rosin.

Description

AQUA FARMING SYSTEM AND USE
BACKGROUND
The invention relates to an aqua farming system.
The invention further relates to treatment of Ichthy- ophthirius multifiliis .
The invention further relates to treatment of Ichthyobodo necator.
The invention further relates to treatment of Lepeo- phtheirus salmonis . The invention still further relates to treatment of virus es, such as viruses causing Infectious Haematopoietic Ne crosis (IHN), Pancreas Disease (PD), Sleeping Disease (SD), Viral Haemorrhagic Septicaemia (VHS), or Infectious Salmon Anemia (ISA).
The demand for materials inhibiting of growth of harmful organisms, such as parasites and viruses, e.g. enveloped viruses, in aqua farming systms, is constantly growing. It is common practice to use formalin to control external parasitic infections of fish. A problem is that formalin comprises typically about 1/3 formaldehyde that is known as carcinogenic substance. Additionally, formalin may be damaging for some species commonly farmed in aqua farming systems . BRIEF DESCRIPTION
Viewed from a first aspect, there can be provided an aqua farming system comprising an active agent for inhibiting the growth of parasites and viruses in said water system, wherein said active agent comprises at least one of alkali metal salt of rosin and alkaline-earth metal salt of ros in.
An advantage is that an aqua farming system for protecting farmed species and having ability to resist harmful organ isms as well as harmful viruses may be achieved by a sub stance that is harmless to humans.
The system and the treatments are characterised by what is stated in the independent claims. Some other embodiments are characterised by what is stated in the other claims. Inventive embodiments are also disclosed in the specifica tion and drawings of this patent application. The in ventive content of the patent application may also be de fined in other ways than defined in the following claims. The inventive content may also be formed of several sepa rate inventions, especially if the invention is examined in the light of expressed or implicit sub-tasks or in view of obtained benefits or benefit groups. Some of the defi nitions contained in the following claims may then be un necessary in view of the separate inventive ideas. Fea tures of the different embodiments of the invention may, within the scope of the basic inventive idea, be applied to other embodiments.
Alkali metal salt of rosin and alkaline-earth metal salt of rosin, i.e. rosinates, are widely used as detergents in household cleaning purposes. They are available for exam ple under brand names of Tolu Manty from Henkel and Manty- saippua from Foxtel, and Dercinate 50 TO from Les Derives Resiniques et Terpeniques (DRT), among others. These prod ucts are claimed to contain typically 15 - 30 wt.-% rosinate according to the manufacturers.
The term "aqua farming system" (also known as aquaculture) means in this description farming of fish, fish eggs in hatcheries, crustaceans, molluscs, aquatic plants, algae in freshwater or saltwater and under controlled condi tions.
BRIEF DESCRIPTION OF FIGURES
Some embodiments illustrating the present disclosure are described in more detail in the attached drawing, in which
Figure 1 is a schematic view of an aqua farming system, and
Figure 2 illustrates results of an example.
DETAILED DESCRIPTION
An aqua farming system according to the current comprises an active agent for inhibiting the growth of certain dis eases and/or viruses harmful to farmed species. Said ac tive agent comprises at least one of alkali metal salt of rosin and alkaline-earth metal salt of rosin.
In an embodiment, said alkali metal salt of rosin and/or alkaline-earth metal salt of rosin is included in Tall Oil Soap (TOS). The TOS is typically a by-product of the Kraft process of wood pulp manufacture when pulping mainly co niferous trees. TOS may be marketed and sold under trade names Tolu Manty, Mantysaippua, and Dercinate 50 TO, for instance.
In an embodiment, the alkali metal salt of rosin and/or alkaline-earth metal salt of rosin is/are of purified, distilled fraction of Tall Oil Soap.
Figure 1 is a schematic view of an aqua farming system. In an embodiment, the aqua farming system 100 is a system for growing edible fish or shellfish products. In an embodi ment, the aqua farming system 100 comprises a water basin 2, a filtering element, water pipes 3, 4 and 5, such as a water pipe 3 for feeding recirculated water in the basin 2, a pipe 4 feeding water from the basin to the filtering element, and/or a pipe 5 feeding fresh water in the aqua farming system 100 from outside thereof.
In an embodiment, the water basin 2 is an artificial ba sin. In an embodiment, the water basin 2 is isolated from natural waters.
According to an aspect, the farmed species is contacted a short residence time with the active agent. In an embodi ment, the volume of water in the water basin 2 is con trolled such that water level can be lowered from a first water level WL 1 to a second water level WL 2. The water can be removed by e.g. a drain 6.
In an embodiment, the first water level WL 1 corresponds to a normal volume of water kept most of the time in the water basin 2, i.e. a normal state of use. In an embodi ment, the amount of the farmed species is 3 kg - 4 kg per m3 of water when the first water level WL 1 is prevailing.
In an embodiment, the second water level WL 2 corresponds to a water level that allows the farmed species to be sub merged, but not much more, i.e. a state of lowered water.
In an embodiment, the second water level WL 2 corresponds to a water volume that is 25 % - 50 % of water volume in the first water level WL 1. In an embodiment, said per centage is in range of 30 % - 40 %. In an embodiment, said percentage is in range of 30 % - 35 %.
In an embodiment, water depth in the second water level WL 2 is in range of 20 cm - 50 cm. In an embodiment, said wa ter depth is in range of 25 cm - 30 cm. In an embodiment, the water level is first decreased from the first water level WL 1 to the second water level WL 2 and following this, the active agent is added to the de- creased volume of water.
In an embodiment, the active agent is added as a liquid or solution to the water. An advantage is that the active agent is readily soluble in water. In another embodiment, the active agent is added as a powder in water.
In an embodiment, the active agent is added such that the concentration of the active agent in water is in range of 0.05 weight-% - 4 weight-%. The concentration has to be high enough for being effective against the parasites and viruses, but below a level that may be harmful to the farmed species. A preferable amount of the active agent depends on various parameters. For example, regarding fishes, the amount depends on at least the next parame- ters: species of fish, size or size distribution of indi vidual fishes, temperature of water, and a contact time of the active agent and fishes.
In an embodiment, the residence time of the species under influence of the active agent is in range of 5 min - 30 min. In an embodiment, the residence time is in range of 10 min - 15 min.
In an experiment, white fishes (Coregonus lavaretus) and trouts (Salmo trutta m. lacustris), weight 1.5 kg, were treated in water (10 °C) containing 0.75 - 0.5 weight-% of Dercinate 50 TO for 10 minutes without causing any prob lems to the fishes. It is to be noted that white fish is an extremely sensi tive species to formalin - in such an extent that formalin treatment usually causes death of white fish.
In another experiment, fish eggs were treated in water (1 °C - 10 °C) containing 1 - 2 weight-% of Dercinate 50 TO for 10 minutes without causing any problems to the fish eggs.
In an embodiment, water is not changed or circulated through the filtering element during the residence time of the species under influence of the active agent. However, the water may be circulated or moved actively in the water basin during said influence of the active agent. In anoth er embodiment, water is changed or circulated through the filtering element 1 during the residence time of the spe cies under influence of the active agent, and the concen tration of the active agent is controlled, if necessary. In still another embodiment, water is changed during the residence time of the species under influence of the ac tive agent by feeding fresh water from outside of the aqua farming system 100, draining water from the water basin, and adding the active agent in order to keep its concen tration on desired level.
In an embodiment, the treating of the the farmed species with the active agent takes place in a separate bathing bucket or like. The farmed species to be treated are transferred to the bathing bucket just for the treatment, and then removed from the bathing bucket.
In an embodiment, the aqua farming system 100 comprises a gas tube 7 that is connected to a gas source (not shown) for feeding oxygenous gas, such as air, in the water. This way the oxygen concentration of water lowered to the sec ond water level WL 2 can be kept such a level that well- being of the species can be guaranteed in the water basin even the amount of water is low.
In an embodiment, alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of Ichthyophthirius multifiliis (ICH) and/or preventing ICH infestation. ICH is a parasitic ciliate that can infect most freshwater fish species. ICH causes a disease common ly referred to as white spot disease.
In an embodiment, alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of Ichthyobodo necator (Costia necatrix) and/or preventing infestation thereof. Costia necatrix is a protozoan that attaches to the skin and gills of sweet water fish and in troduces severe slimy covers often leading to death due to the lack of oxygen.
In an embodiment, alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of Lepeophtheirus salmonis (Salmon louse) and/or preventing infestation thereof. Salmon louse is a parasite living mostly on salmon but is also sometimes found on the three- spined stickleback. Salmon louse can cause physical damage to the fish's fins, skin erosion, constant bleeding, and open wounds creating pathways for other pathogens. If ex isting large populations on a fish, Salmon louse as such can lead to death.
In an embodiment, alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment and/or preventing of diseases caused by viruses, such as enveloped viruses. Such diseases include, for example, In fectious Haematopoietic Necrosis (IHN), Viral Haemorrhagic Septicaemia (VHS), or Infectious Salmon Anemia (ISA). In an embodiment, alkali metal salt of rosin or alkaline- earth metal salt of rosin for is/are used for treatment of at least one of Pancreas Disease (PD) and Sleeping Disease (SD) caused by salmonid alphavirus (SAV).
EXAMPLE 1
Figure 2 illustrates results of Example 1. TOS based sodi um salt of rosin, Dercinate 50 TO, named as D-rosin in figure, was tested with quantitative polymerase chain re action (qPCR) method against enveloped virus, human corona virus with 1 wt.-% concentration. Cell viability (absorb ance on wave number 570) is shown on Y-axis.
Cells that were in contact with active ingredient (1 % D- rosin) were even more viable than reference group (Cell control).
"Virus control" is showing viability of cells exposed to the virus and without the treatment with the TOS based so dium salt of rosin.
The virus was totally deactivated in 5 minutes.
EXAMPLE 2
Young Rainbow trouts, Oncorhynchus mykiss, weighing about 5 grams each, were infested by Ichthyophthirius multifili- is. Ten such fishes were transferred from a basin into a bathing bucket filled with water containing 1 wt.-% Der cinate 50 TO. After 10 minutes of bathing the parasites had left gills and skin of fishes. Water temperature was 20 °C.
The invention is not limited solely to the embodiments de scribed above, but instead many variations are possible within the scope of the inventive concept defined by the claims below. Within the scope of the inventive concept the attributes of different embodiments and applications can be used in conjunction with or replace the attributes of another embodiment or application.
The description is only intended to illustrate the idea of the invention. The invention may vary in detail within the scope of the inventive idea defined in the following claims.
REFERENCE SYMBOLS
1 filtering element
2 water basin 3-5 water pipe
6 gas pipe
100 arrangement
WL 1 first water level
WL 2 second water level

Claims

1. An aqua farming system (100), comprising an active agent for inhibiting the growth of parasites and viruses in said water system, wherein
- said active agent comprises at least one of alkali metal salt of rosin and alkaline-earth metal salt of rosin.
2. The aqua farming system as claimed in claim 1, being a system for growing fish or shellfish or fish egg products.
3. The aqua farming system as claimed in any of the pre ceding claims, wherein - said alkali metal salt of rosin and/or alkaline-earth metal salt of rosin is included in Tall Oil Soap (TOS).
4. The aqua farming system as claimed in claim 1 or 2, wherein - said alkali metal salt of rosin and/or alkaline-earth metal salt of rosin is/are of purified, distilled fraction of Tall Oil Soap (TOS).
5. The aqua farming system as claimed in any of the pre- ceding claims, comprising
- a normal state of use and
- a state of lowered water, and wherein
- the active agent is arranged to be introduced in the system in said state of lowered water.
6. The aqua farming system as claimed in any of the pre ceding claims, wherein the parasites comprise at least one of the following:
A) Ichthyophthirius multifiliis, B) Ichthyobodo necator, and C) Lepeophtheirus salmonis.
7. The aqua farming system as claimed in any of the pre ceding claims, wherein the virus(es) is/are enveloped vi rus (es).
8. The aqua farming system as claimed in any of the pre ceding claims, wherein the viruses comprise viruses causing at least one of the following: - Infectious Haematopoietic Necrosis (IHN),
- Pancreas Disease (PD) caused by salmonid alpha- virus (SAV),
- Sleeping Disease (SD) caused by salmonid alpha- virus (SAV), - Viral Haemorrhagic Septicaemia (VHS), and
- Infectious Salmon Anemia (ISA).
9. Alkali metal salt of rosin or alkaline-earth metal salt of rosin for use in the treatment of Ichthyophthirius mul- tifiliis.
10. Alkali metal salt of rosin or alkaline-earth metal salt of rosin for use in the treatment of Ichthyobodo ne- cator.
11. Alkali metal salt of rosin or alkaline-earth metal salt of rosin for use in the treatment of Lepeophtheirus salmonis.
12. Alkali metal salt of coniferous rosin or alkaline- earth metal salt of rosin for use in the treatment of vi ruses, such as viruses causing Infectious Haematopoietic
Necrosis (IHN), Pancreas Disease (PD), Sleeping Disease (SD), Viral Haemorrhagic Septicaemia (VHS), or Infectious Salmon Anemia (ISA).
13. Alkali metal salt of rosin or alkaline-earth metal salt of rosin for use as claimed in any of claims 8 - 12, wherein
- the alkali metal salt of coniferous rosin or alkaline- earth metal salt of rosin is arranged to be added in a wa ter basin in a state of lowered water.
14. Alkali metal salt of rosin or alkaline-earth metal salt of rosin for use as claimed in claim 13, wherein
- oxygenous gas, such as air, is arranged to be added in the water basin comprising the alkali metal salt of conif erous rosin or alkaline-earth metal salt of rosin.
PCT/FI2022/050218 2021-04-08 2022-04-05 Aqua farming system and use WO2022214740A1 (en)

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WO2007122619A2 (en) * 2006-04-20 2007-11-01 Biomor Israel Ltd. Tto-based wide spectrum therapeutics, disinfectants & anesthetics for use in aquaculture
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