CN212488028U - Indoor domestication and cultivation device for wild juvenile tunas of yellow fin tunas - Google Patents
Indoor domestication and cultivation device for wild juvenile tunas of yellow fin tunas Download PDFInfo
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- CN212488028U CN212488028U CN202022032660.1U CN202022032660U CN212488028U CN 212488028 U CN212488028 U CN 212488028U CN 202022032660 U CN202022032660 U CN 202022032660U CN 212488028 U CN212488028 U CN 212488028U
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Abstract
The utility model provides an indoor domestication and cultivation device for wild young yellow fin tunas, which belongs to the technical field of aquaculture, and comprises a domestication pond 1 with an opening at the top; the bottom of the domestication pond 1 is provided with a water outlet 2; from the water outlet 2, a water discharge pipeline 3, a water purification treatment component 4, a water pump 5, a water inlet pipeline 6 positioned at the top of the domestication pond 1 and an ultraviolet disinfection component 7 positioned in the domestication pond 1 are sequentially communicated along the water circulation direction; an illumination assembly 8 is arranged above the domestication pond 1; and an oxygenation assembly 9 is arranged at the bottom of the domesticating pond 1. The device of the utility model can successfully solve the technical problem that the young fish of the wild yellow fin tuna can not be domesticated and cultured in the indoor culture pond. The indoor domestication and cultivation of the wild juvenile tuna of the yellow fin is realized for the first time.
Description
Technical Field
The utility model relates to an aquaculture technical field especially relates to an indoor breeding device that tames of wild juvenile fish of yellow fin tuna.
Background
The yellow-fin tuna (Latin name: Thunnus albacares, English name: yellowfin tuna) belongs to Perciformes (Perciformes), Scombridae (Scombridae), and tuna (Thunnus) and is one of important fishery species in ocean fishing in the world. The tuna of the yellow fin is an important variety for fishing in the pacific region, and has extremely high economic value. At present, the artificial culture of the tuna finches is not developed yet domestically, mainly because of the problems of the tuna finches seedling culture technology.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an indoor breeding device that tames of wild juvenile fish of yellow fin tuna, the utility model discloses a device has realized the land of wild juvenile fish of yellow fin tuna and has tamed breed.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
the utility model provides an indoor domestication and cultivation device for wild young yellow fin tunas, which comprises a domestication pond 1 with an opening at the top; the bottom of the domestication pond 1 is provided with a water outlet 2; a drainage pipeline 3, a water purification treatment component 4, a water pump 5, a water inlet pipeline 6 positioned at the opening of the domestication pond 1 and an ultraviolet disinfection component 7 positioned in the domestication pond 1 are sequentially communicated from the drainage outlet 2 along the water circulation direction;
an illumination assembly 8 is arranged above the domestication pond 1; and an oxygenation assembly 9 is arranged at the bottom of the domesticating pond 1.
Preferably, the water purification treatment assembly 4 comprises a treatment cylinder main body 2-1;
a water body filtering tray 2-2 is arranged above the top of the treatment cylinder main body 2-1; filter cotton 2-4 is paved in the water body filter tray 2-2; a filter frame 2-3 is arranged on the filter cotton 2-4; the drainage pipeline 3 is communicated with the filter frame 2-3;
a plurality of biological balls are placed in the treatment cylinder main body 2-1; an air explosion assembly 2-5 is also arranged in the treatment cylinder main body 2-1;
the bottom of the treatment cylinder main body 2-1 is provided with a water return port 2-6 with a filter screen; the water return ports 2-6 are communicated with a water inlet pipeline 6.
Preferably, the ultraviolet disinfection component 7 comprises a main tube 7-1 for flowing water and an ultraviolet lamp tube 7-2 positioned inside the main tube 7-1; two ends of the main body pipe 7-1 are fixed with conversion ports 7-3; copper pipes 7-4 are arranged outside the main body pipe 7-1 at intervals along the flowing direction of the water body.
Preferably, the highest position of the water purification treatment component 4 is equal to the water outlet 2 or lower than the water outlet 2.
Preferably, the lighting assembly 8 includes a halogen lamp 8-1 and a timer for controlling a switching time of the halogen lamp 8-1.
Preferably, the shape of the domesticating pond 1 is cylindrical; the inner diameter of the domestication pond 1 is 4-6 m, and the depth is 1.5-2.5 m.
The utility model has the advantages that: the utility model provides an indoor domestication and cultivation device for wild young yellow fin tunas, which comprises a domestication pond 1 with an opening at the top; the bottom of the domestication pond 1 is provided with a water outlet 2; a drainage pipeline 3, a water purification treatment component 4, a water pump 5, a water inlet pipeline 6 positioned at the opening of the domestication pond 1 and an ultraviolet disinfection component 7 positioned in the domestication pond 1 are sequentially communicated from the drainage outlet 2 along the water circulation direction; an illumination assembly 8 is arranged above the domestication pond 1; and an oxygenation assembly 9 is arranged at the bottom of the domesticating pond 1. In the utility model, the water in the domestication pond 1 is pressed into the drainage pipeline 3 from the bottom of the domestication pond 1 under the action of gravity, the discharged water is purified by the water purification treatment component 4 to remove ammonia nitrogen and nitrite in the water, the purified water is pressurized by the water pump 5 and flows back to the domestication pond 1 through the water inlet pipeline 6 and the ultraviolet disinfection component 7; the ultraviolet disinfection component 7 can disinfect the reflowing water body. The utility model discloses in, lighting assembly 8 can be used for regulating and controlling the indoor illumination condition of domesticating the breed of wild juvenile fish of yellow fin tuna, through carrying out the light filling at the initial stage of domesticating and adjusting illumination cycle, can avoid the juvenile fish to breed the initial stage and to domesticating the pond size structure and not know, it is dead to hit the wall after swimming fast, and then can improve the survival rate of juvenile fish. The utility model discloses in, aqueous purification treatment subassembly 4 can reduce aquatic ammonia nitrogen and nitrite, prevents that fish from poisoning ammonia nitrogen and nitrite, filters aquatic particulate matter, guarantees quality of water.
The device of the utility model can successfully solve the technical problem that the young fish of the wild yellow fin tuna can not be domesticated and cultured in the indoor culture pond. The indoor domestication and cultivation of the wild juvenile tuna of the yellow fin is realized for the first time.
Drawings
Fig. 1 is a schematic structural view of an indoor domestication and cultivation device for wild young yellowfin tuna according to the present invention, wherein 1 represents a domestication pond, 2 represents a water outlet, 3 represents a water discharge pipeline, 4 represents a water purification treatment component, 5 represents a water pump, 6 represents a water inlet pipeline, 7 represents an ultraviolet disinfection component, 8 represents an illumination component, and 9 represents an oxygenation component;
FIG. 2 is a schematic view showing a top view of a water purification treatment module 4, wherein 2-1 denotes a treatment tank main body, 2-2 denotes a water body filtration tray, 2-3 denotes a filtration frame, 2-4 denotes a filtration cotton, 2-5 denotes an aeration module, 2-6 denotes a water return port, and 3 denotes a drain pipe;
FIG. 3 is a schematic structural view of the ultraviolet disinfection module 7, wherein 7-1 represents a main tube, 7-2 represents an ultraviolet lamp tube, 7-3 represents a switching port, 7-4 represents a copper tube, and S represents a water flow direction;
fig. 4 is a statistical result of survival rates of young wild tuna finches according to the methods of example 1 and comparative example 1.
Detailed Description
The utility model provides an indoor domestication and cultivation device for wild young yellow fin tunas, which comprises a domestication pond 1 with an opening at the top; the bottom of the domestication pond 1 is provided with a water outlet 2; a drainage pipeline 3, a water purification treatment component 4, a water pump 5, a water inlet pipeline 6 positioned at the opening of the domestication pond 1 and an ultraviolet disinfection component 7 positioned in the domestication pond 1 are sequentially communicated from the drainage outlet 2 along the water circulation direction; an illumination assembly 8 is arranged above the domestication pond 1; and an oxygenation assembly 9 is arranged at the bottom of the domesticating pond 1.
In the present invention, the structural schematic diagram of the device is shown in fig. 1, wherein 1 represents a domestication pond, 2 represents a water outlet, 3 represents a drainage pipeline, 4 represents a water purification treatment component, 5 represents a water pump, 6 represents a water inlet pipeline, 7 represents an ultraviolet disinfection component, 8 represents a lighting component, and 9 represents an oxygen increasing component.
In the present invention, the shape of the domesticating pond 1 is preferably cylindrical; the inner diameter of the domestication pond 1 is preferably 4-6 m, and more preferably 5 m; the depth of the domestication pond 1 is preferably 1.5-2.5 m, and more preferably 2 m; the wall thickness of the domesticating pond 1 is not specially limited by the utility model, and the domesticating pond can be set conventionally in the field; the material of the walls and the bottom of the domestication pond 1 is preferably concrete; an anti-escape net is preferably arranged above the edge of the domestication pond in an enclosing manner; the material of the anti-escape net is preferably polyester resin; the height of the anti-escape net is preferably 70-80 cm, and more preferably 75 cm.
In the utility model, the water outlet 2 is preferably arranged beside the oxygen increasing component 9, and the distance from the oxygen increasing component 9 is preferably 25 cm; the shape of the drain opening 2 is preferably circular; the diameter of the water outlet 2 is preferably 10-15 cm, and more preferably 12 cm; the number of the drain ports 2 is preferably 1 per 1 domesticated pond.
In the utility model discloses, drainage pipe 3's diameter is preferred 11 ~ 12 cm. The utility model discloses it is right drainage pipe 3 with the connected mode of outlet 2 does not have special restriction, adopt the conventional connected mode in this field can to the disappearance phenomenon of leaking is accurate.
In the present invention, the water purification treatment assembly 4 preferably includes a treatment cylinder main body 2-1 having an upper opening; the shape of the treatment cylinder main body 2-1 is preferably rectangular parallelepiped; the length of the treatment cylinder main body 2-1 is preferably 2-3 m, more preferably 2.5m, the width is preferably 2-3 m, more preferably 2.5m, and the height is preferably 1-2 m, more preferably 1.5 m; the number ratio of the treatment cylinder main body 2-1 to the domestication pond 1 is preferably 1: 1. in the utility model discloses, the highest point of water purification treatment component 4 with outlet 2 is equal or is less than outlet 2.
In the utility model, the water purification treatment component 4 preferably further comprises a water replenishing pipe, in the specific implementation process of the utility model, the inside of the treatment cylinder main body 2-1 can be cleaned irregularly, and the water replenishing pipe replenishes water to a normal water level after cleaning; the number of the water replenishing pipes is preferably 1/1 water purification treatment component 4; the water replenishing pipe is preferably disposed above the top of the treatment cylinder main body 2-1.
In the utility model, a water body filtering tray 2-2 which is not in contact with the cylinder main body is arranged above the top of the processing cylinder main body 2-1; 2-3 stainless steel pipes which are horizontally arranged are fixed on the side wall of the treatment cylinder main body 2-1; the filtering tray 2-2 is placed on the stainless steel pipe; the shape of the bottom mesh of the filtering tray is preferably circular, and the diameter of the bottom mesh of the filtering tray is preferably 1 cm; the number of the filter trays 2-2 is preferably 3 per 1 treatment cylinder main body 2-1.
In the utility model, 2-3 layers of filter cotton 2-4 are laid in each water body filter tray 2-2; the thickness of each layer of the filter cotton is preferably 1mm from 2 to 4; the filter cotton 2-4 is used for filtering micro particles; in the specific implementation process of the utility model, the filter cotton preferably comprises the conventional filter cotton for aquarium in the field.
In the utility model, a filtering frame 2-3 is preferably arranged on the filtering cotton 2-4; the shape of the meshes of the filter frames 2-3 is preferably square; the specification of the mesh is preferably 5mm × 5 mm; the shape of the bottom of the filter frame 2-3 is preferably circular, and the diameter is preferably 15 cm; the shape of the upper opening of the filter frame 2-3 is preferably circular, and the diameter is preferably 30 cm.
In the utility model, 2-4 filter cotton is laid in each filter frame; in the utility model, the drainage pipeline 3 is communicated with the filter frame 2-3; the drain pipeline 3 preferably comprises a main pipe and a branch pipe; each main pipe is preferably provided with 3 branch pipes, and 3 straight pipes are respectively introduced into 3 filter frames 2-3; the diameter of the branch pipe is preferably 85-95 mm, and more preferably 90 mm.
In the utility model, the bottom of the treatment cylinder main body 2-1 is provided with a water return port 2-6 with a filter screen; the water return port 2-6 is preferably positioned in the middle of the bottom of the treatment cylinder main body 2-1; the diameter of the water return port 2-6 is preferably 15-25 cm, and is further preferably 20 cm; the mesh size of the filter screen is preferably 1mm multiplied by 1.5 mm; in the specific implementation process of the utility model, the filter screen is replaced once a day; the water return ports 2-6 are communicated with a water inlet pipeline 6.
In the utility model, a plurality of biological balls are arranged inside the treatment tank main body 2-1 and are used for nitrifying bacteria to attach to and treat ammonia nitrogen and nitrite in water; the biosphere is preferably a K2 biosphere; the diameter of the K2 bio-sphere is preferably 12-18 mm, and is further preferably 15 mm; the K2 biosphere is from conventional commercial sources; the utility model discloses in the specific implementation process, K2 biological ball is purchased from following website:
https://item.jd.com/71617004350.html。
in the utility model, the inside of the processing cylinder main body 2-1 is preferably provided with an aeration component 2-5; the aeration components 2-5 preferably comprise aeration discs or aeration pipes; the aeration component 2-5 is preferably arranged around the water return port 2-6; the distance from the center of the water return opening is preferably 20-30 cm, and more preferably 25 cm. The utility model discloses in, aeration subassembly 2-5's effect is used for exploding the gas water body, makes biological ball fully roll in the system, makes return water and biological ball can fully contact in handling jar main part 2-1, and then fully detach aquatic ammonia nitrogen and nitrite.
In the utility model, the overlooking structure schematic diagram of the water purification treatment component 4 is shown in a figure 2, wherein 2-1 represents a treatment cylinder main body, 2-2 represents a water body filtering tray, 2-3 represents a filtering frame, 2-4 represents filtering cotton, 2-5 represents an aeration component, 2-6 represents a water return port, and 3 represents a drainage pipeline.
The utility model discloses in the implementation process, through drainage pipe 3 entering water purification treatment component's filtration frame 2-3 in domestication pond 1, in proper order through filtration frame 2-3 with filter cotton 2-4 filtration, solid large granule residual bait, excrement and urine stay the filtration frame, the small granule of suspension stays on filter cotton, the water after the purification passes through the filtration pore entering treatment jar main part 2-1 of water filtration tray, under aeration subassembly 2-5's effect, return water and biological ball can fully contact in treatment jar main part 2-1, and then fully detach aquatic ammonia nitrogen and nitrite.
The utility model discloses in, water pump 5 is used for promoting the water after water purification treatment component 4 handles to domesticating pond 1.
In the present invention, the inner diameter of the water inlet pipe 6 is preferably 63 mm.
In the present invention, the ultraviolet disinfection module 7 preferably comprises a main tube 7-1 for flowing water and an ultraviolet lamp tube 7-2 located inside the main tube 7-1; two ends of the main tube 7-1 are fixedly provided with switching ports 7-3, one side of the switching port is connected with the water inlet pipeline 6, the other side of the switching port is connected with the water outlet, and the switching ports 7-3 are used for fixing ultraviolet lamp tubes; the main pipe is preferably made of PVC; the color of the main tube is preferably blue and opaque; the electric wire of the ultraviolet lamp tube 7-2 is connected out of the water outlet and is connected with a power supply; copper pipes 7-4 are arranged near the water outlet at intervals along the flowing direction of the water body; the distance between the copper pipe and the water outlet is preferably 25-35 cm, and further preferably 30 cm; the copper pipe has the function of slowly oxidizing and ionizing copper, and trace copper has a sterilization effect in the system.
In the present invention, the structural schematic diagram of the ultraviolet disinfection component 7 is shown in fig. 3, wherein 7-1 represents a main tube, 7-2 represents an ultraviolet lamp tube, 7-3 represents a conversion port, 7-4 represents a copper tube, and S represents a water flow direction.
In the specific implementation process of the utility model, the ultraviolet lamp tube 7-2 preferably comprises Philips TUV 55W (length 116cm), and when water enters the water storage tank, the water flows into the domestication pond 1 from the inside of the main body tube 7-1 through 7-2 after being irradiated by the ultraviolet lamp tube; the ultraviolet disinfection component 7 is preferably located 0.2-0.4 m under water in the domestication pond 1, and is further preferably located 0.3m under water.
In the present invention, the lighting assembly 8 preferably includes a halogen lamp 8-1 and a timer for controlling a switching time of the halogen lamp 8-1; the power of the halogen lamp 8-1 is preferably 80-120W, and is further preferably 100W; the height of the lighting assembly 8 from the water surface of the domestication pond 1 is preferably 1.2-1.6 m, and more preferably 1.4 m; the horizontal distance between the lighting assembly 8 and the center of the domesticating pond 1 is preferably 1-1.5 m, and more preferably 1.2 m; in the specific implementation process of the utility model, the lighting assembly 8 is fixed through the bracket; the support is preferably made of a PVC pipe; the lighting assembly 8 is used for supplemental lighting within the domestication pond 1. The utility model discloses in the implementation process, be used for night light filling illumination or all-day light illumination in 0 ~ 72h that the wild juvenile fish of yellow fin tuna tamed, prevent that yellow fin tuna from hitting the wall.
In the present invention, the oxygen increasing component 9 preferably comprises a nano oxygen increasing pipe; the shape of the nano oxygen increasing pipe is preferably circular; the circumference of the nano oxygen increasing pipe is preferably 5.5-6.5 m, and is further preferably 6 m; the inner diameter of the nano oxygen increasing pipe is preferably 8-12 mm, and is further preferably 10 mm; the inner diameter of the nano oxygen increasing pipe is preferably 18-22 mm, and is further preferably 20 mm. The utility model discloses in, oxygenation subassembly 9 is used for increasing and regulation and control the dissolved oxygen volume of the interior water body of domesticating pond 1.
In the present invention, the device preferably further comprises a valve; the valves preferably include a water inlet valve, a water discharge valve, an air charging valve for controlling the domestication pond 1, and a water inlet valve, a water return valve and an air charging valve for controlling the water purification treatment component.
The use method of the device of the utility model preferably comprises the following steps:
starting the water pump 5;
throwing the captured wild young tunas of the yellow fin tuna with water into the domestication pond 1 for domestication;
the domesticated lighting program comprises: starting the lighting assembly 5 for light supplement within 0-72 h of the putting time, and keeping the illumination all day long; after 72 hours of putting, the illumination condition is 14 hours of illumination and 10 hours of darkness;
the domesticated training feeding program comprises: feeding fish fillets for 72 hours to train young fish to eat; feeding for 1 time at intervals of 2-4 min at the feeding frequency, wherein the number of fish fillets fed for each time is 2-6; the training time is 5-7 d, and the training time is 2h every day.
The utility model discloses in, the power of water pump is preferably 0.2 ~ 0.3kw, and further preferred is 0.25 kw.
The wild young fish of yellow fin tuna 25 ~ 35d before puting in, the utility model discloses the preferred still include put into the sharp perch in domesticating pond 1 and raise. In the utility model, the starting time for feeding the acutus micropterus is preferably 30 days before the wild young yellow fin tuna is put in; the water body in the domestication pond 1 is preferably seawater; the salinity of the seawater is preferably 33 per thousand; seawater nitrifying bacteria are preferably added into the water body; the utility model has no special restriction on the seawater nitrifying bacteria, and can be realized by adopting the conventional commercially available seawater nitrifying bacteria; the addition amount of the seawater nitrifying bacteria is preferably 40-60 g/m3More preferably 50g/m3(ii) a The main function of the seawater nitrifying bacteria is to decompose ammonia nitrogen and nitrite in water. The utility model discloses in, the effect of breeding the sharp weever in advance is to the system curing, and the ammonia nitrogen nitrite that the sharp weever produced is used for cultivateing the sea water nitrobacteria.
In the utility model, a cultivating net cage is preferably placed in the domestication pond 1; the number of the culture net cages is preferably 1-2/1 domestication pond 1, and the micropterus salmoides are preferably put into the culture net cages for culture; the shape of the cultivation net cage is preferably cuboid; the specification of the cultivation net cage is preferably 2m multiplied by 1 m; the size of the micropterus salmoides is preferably 15-25 cm, and is further preferably 20 cm; the optimal placement density of the micropterus salmoides is 40-60 pieces/1 cultivation net cage, and the optimal placement density is 50 pieces/1 cultivation net cage; the feeding mode of the micropterus salmoides is preferably feeding by a satiety method; the number of feeding per day is preferably 1; the feeding time period is preferably 8: 00-10: 00; the utility model is not specially limited for the feed to be fed, and the conventional micropterus acutus feed in the field can be adopted. The utility model discloses in, the effect of feeding sharp weever in advance is to the water curing, and the ammonia nitrogen nitrite that sharp weever produced is used for cultivateing the digestive bacteria.
In the utility model, the capture mode of the wild young tuna is preferably fishing; the body length of the wild juvenile tuna of the tuna finfish is preferably 22-45 cm, more preferably 25-40 cm, and even more preferably 30-35 cm.
In the specific implementation process of the utility model, the wild young tuna of the yellow-fin tuna is preferably caught in the open sea of autonomous county of the Ponky Ririchard; during transportation, the wild juvenile tuna of the tuna fingi is preferably placed in a transportation barrel added with hydrogen peroxide; the concentration of the hydrogen peroxide is preferably 15-25 ppm, and more preferably 20 ppm; the hydrogen peroxide has the function of sterilization; the wild juvenile tuna of the yellow fin is immediately put into the domestication pond 1 after being transported.
In the utility model, the fish strips preferably comprise ice fresh trash fish strips; the utility model has no special requirements for the type of the source fish of the ice fresh trash fish meat strips; the length of the fish meat strip is preferably 2-4 cm, and more preferably 3 cm; the width of the fish meat strip is preferably 1-2 cm.
In the utility model, the temperature of the domesticated water is preferably 28-31 ℃, and more preferably 29-30 ℃; the water level for domestication is preferably 1.5-2 m, more preferably 1.8 m; the ammonia nitrogen content of the water body is optimized<0.02mg/L, nitrite content is preferred<0.05mg/L, dissolved oxygen amount is preferred>5.8mg/L, the pH value of the water body is preferably 7.8-8.1, and the water exchange capacity is 8.0-8.3 m3(vii)/h, so that the fish use more energy to swim against the water; the water exchange amount is realized by adjusting the valves for controlling water inlet and outlet of the domestication pond 1 and the power of the water pump.
After domestication of wild young yellowfin tunas, the utility model preferably further comprises feeding the domesticated young yellowfin tunas; the feeding mode is preferably feeding by a satiety method; the fed bait is preferably frozen fresh trash fish meat strips; the number of feeding per day is preferably 1; the feeding time is preferably 8 a.m.: 00; the water exchange amount after domestication is preferably 7.1m3/h。
In the present invention, the time for the training to ingest is preferably 6 d; the training time is preferably 1 hour (8: 00-9: 00) in the morning and 1 hour (15: 00-16: 00) in the afternoon.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The schematic structural view of the domestication device used in this embodiment is shown in fig. 1, and includes a domestication pond 1 (inner diameter 5m, pond depth 2m) with an open top; the bottom of the domestication pond 1 is provided with a water outlet 2; from the water outlet 2 (with the diameter of 10cm and positioned at one side of the nano oxygenation pipe 9), a water discharge pipe 3, a water purification treatment component 4 (comprising a 2.5 multiplied by 1.5m treatment cylinder main body 2-1, a biological ball, 2-4 filter cotton, 2-3 filter frames, and 2-2 water body filter trays) are sequentially communicated along the water circulation direction, a water pump 5, a water inlet pipe 6 positioned at the opening of the domestication pond 1 and an ultraviolet disinfection component 7 positioned in the domestication pond 1; an illumination assembly 8 (composed of a 500W halogen lamp and a timer) is arranged above the domesticating pond 1; the center of the bottom of the domestication pond 1 is provided with a nano oxygenation pipe 9.
The device of the utility model starts to operate one month before the domestication begins, the normal amount of seawater is added into the domestication pond 1, and 50g/m of seawater is added3The seawater nitrobacteria is characterized in that 1 small 2X 1m net cage is placed in a domestication pond, 50 tips of 20cm of jewfish are put in the net cage, and the seawater nitrobacteria are fed for 1 time every day by a satiation method (8: 00 in the morning). And monitoring the changes of ammonia nitrogen, nitrite and pH value in the domestication pond every day. After 30 days, the water quality indexes in the domestication pond comprise ammonia nitrogen, nitrite and stable pH, and the small net cages and the acutangular bass are moved out of the domestication pond. Thus, the domestication and cultivation of the juvenile tuna of the yellow fin can be carried out.
Capturing wild young tunas of the tuna yellowfin, which have the body length of 22-45 cm, in the overseas of the autonomous county of the Li nationality of the Ling-fishing mode, transporting to a domestication workshop, and adding 20ppm of hydrogen peroxide into a transport barrel in the transportation process. And (4) transporting the wild tuna larvae of the yellow fin to a trial culture workshop at 4-6 pm. After the young fishes are transported to a workshop, the young fishes are directly thrown into a domestication pond with water. And (3) moving the juvenile fish into the domesticating pond for the first time, and keeping the lamplight irradiation for 72 hours. And (3) starting domesticating the feed after the juvenile fish enters the domesticating pond for 72 hours: cutting the frozen fresh trash fish meat into strips with the length of 3cm and the width of 1cm, and throwing 3 strips each time for training the young fish to eat. 8 in the morning: 00, domestication is started, domestication is performed for 4 hours in the afternoon, and young fishes enter the domestication pond for 72 hours and then begin to actively feed.
And the illumination after 72h is changed into 14h illumination: dark for 10 h. After the young fishes enter the domestication pond for 6 days, domestication is completed, and then bait feeding is changed into a satiation method of 8 in the morning: feeding for 1 time 00.
The water temperature is 28 ℃, the ammonia nitrogen is less than 0.02mg/L, and the nitrite is less than 0.05mg/L in the domestication process. Dissolved oxygen >5.8 mg/L.
Comparative example 1
The same as example 1 was repeated except that the lighting unit was not used for supplementary lighting.
The results of statistics of survival rates of young wild tuna finches according to the methods of example 1 and comparative example 1 are shown in fig. 4. As can be seen from FIG. 4, 72h of light irradiation is necessary to improve the survival rate of the young tunas at the early stage of domestication and breeding of the young wild tunas. After the wild juvenile fish enters the domestication pond for the first time, the survival rates of the light and the dark are respectively kept to be 95.3 +/-1.5% and 41 +/-4.51% in the evening. Therefore, the survival rate of the juvenile fish can be obviously improved by keeping the light irradiation after the wild juvenile fish enters the system for the first time. The survival rate of example 1 after the young fish enters the domestication pond at 2d was 87.9 + -1.3%, while the survival rate of comparative example 1 was 32.5 + -8.5%. From day 4 onwards, example 1 survival rates remained between 81.8% and 80.5% without significant difference. Based on survival rate data proof, the utility model discloses a domestication cultivation method resumes natural illumination cycle and is 14h illumination after the juvenile fish gets into system 72 h: and the fish larvae are dark for 10 hours and are used for ensuring the survival rate of the juvenile fish in the domestication system.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. An indoor domestication and cultivation device for wild juvenile tunas of yellow fin tunas comprises a domestication pond (1) with an opening at the top; a water outlet (2) is formed in the bottom of the domestication pond (1); the device is characterized in that a drainage pipeline (3), a water purification treatment component (4), a water pump (5), a water inlet pipeline (6) positioned at the opening of the domestication pond (1) and an ultraviolet disinfection component (7) positioned in the domestication pond (1) are sequentially communicated from the drainage outlet (2) along the water circulation direction;
a lighting assembly (8) is arranged above the domestication pond (1); and an oxygenation assembly (9) is arranged at the bottom of the domestication pond (1).
2. The device according to claim 1, wherein the water purification treatment assembly (4) comprises a treatment cylinder body (2-1);
a water body filtering tray (2-2) is arranged above the top of the treatment cylinder main body (2-1); filter cotton (2-4) is paved in the water body filter tray (2-2); a filter frame (2-3) is arranged on the filter cotton (2-4); the drainage pipeline (3) is communicated with the filter frame (2-3);
a plurality of biological balls are placed in the treatment cylinder main body (2-1); an air explosion assembly (2-5) is also arranged in the treatment cylinder main body (2-1);
the bottom of the treatment cylinder main body (2-1) is provided with a water return port (2-6) with a filter screen; the water return ports (2-6) are communicated with a water inlet pipeline (6).
3. The device according to claim 1, characterized in that the ultraviolet disinfection component (7) comprises a main tube (7-1) for circulating water and an ultraviolet lamp tube (7-2) positioned inside the main tube (7-1); conversion ports (7-3) are fixed at two ends of the main body pipe (7-1); copper pipes (7-4) are arranged outside the main pipe (7-1) at intervals along the flowing direction of the water body.
4. The device according to claim 1, characterized in that the water purification treatment component (4) is at its highest level with the water discharge outlet (2) or below the water discharge outlet (2).
5. The device according to claim 1, characterized in that the lighting assembly (8) comprises a halogen lamp (8-1) and a timer for controlling the switching time of the halogen lamp (8-1).
6. The apparatus according to claim 1, characterized in that said domestication basin (1) is cylindrical in shape; the inner diameter of the domestication pond (1) is 4-6 m, and the depth is 1.5-2.5 m.
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