JP2003092999A - Method of reprocessing pellet-shaped feed for cultured fish, reprocessed pellet-shaped feed, and culturing method using reprocessed pellet-shaped feed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the biting of a feed for cultured fishes, and promote the digestion and the growth by re-impregnating the pellet-shaped feed for the cultured fishes in oil and fat and water. SOLUTION: This method for reprocessing the pellet-shaped feed for the cultured fish having the oil and fat and water impregnated, comprises stirring the pellet-shaped feed while spraying the water on the surface of the feed, reducing the pressure on the resultant feed, returning the pressure to the atmospheric pressure after a prescribed time, and reprocessing the feed by pressing the feed again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of reprocessing pelletized cultured fish feed for reprocessing pelletized cultured fish feed for cultivated fish such as hamachi and kanpachi, and reprocessing. TECHNICAL FIELD The present invention relates to a pellet-shaped processed feed for cultured fish and a culture method using the pellet-shaped processed feed for cultured fish.

[0002]

2. Description of the Related Art Conventionally, for example, pellets of cultured fish for hamachi and kanpachi (hereinafter referred to as dry pellets) are
It is manufactured by impregnating the extruded feed material with water and oil (fish oil), and then drying it, and it is administered to cultured fish (fry and adult fish) in a fish farm.

[0003]

However, in the case of the dry pellets, since the feed raw material is impregnated with water or fat and is in a dried state, when the dry pellets are administered at the fish farm, the fry is At the feeding stage, dry pellets are often left out of the mouth, and there is a problem that the growth rate tends to be remarkably reduced due to the release of food.

[0004] Further, since cultured fish having dry pellets in their mouths have a small amount of water in the dry pellets and are hard, the dry pellets put in their mouths are difficult to swallow, and even if swallowed, they are difficult to digest in the body. Therefore, the cultured fish
Ingesting a large amount of seawater makes it easier to swallow dry pellets and makes them easier to digest, but as a result, there is a risk of ingesting a large amount of pathogenic bacteria.

Further, since cultured fish having dry pellets ingest a large amount of seawater, it consumes a large amount of energy to separate the seawater into salt water and fresh water. There is a problem that is.

[0006] In addition, since the dry pellets also contain a small amount of fats and oils as nutrients, there is a problem that the growth energy of the cultured fish is further reduced and there is a concern.

In view of the above problems, the present invention is capable of sufficiently impregnating pelletized aquaculture fish feed with water and fats and oils to prevent the fry from feeding away and improving the growth rate of the fry. And, a method for reprocessing pelletized cultured fish feed, which reduces seawater intake of cultured fish and promotes digestion to obtain good growth, and reprocessed pelletized cultured fish It is an object of the present invention to provide a processed bait for aquaculture and a culture method using a processed bait for cultured fish in pellet form.

[0008]

In order to solve the above problems, the method for reprocessing pelletized cultured fish feed of the present invention comprises:
A method for reprocessing pelletized cultured fish feed impregnated with oil and water as claimed in claim 1, wherein the pelletized cultured fish feed is sprayed with water or oil on the surface while being pelletized. The aquaculture fish feed is agitated, depressurized, returned to atmospheric pressure after a lapse of a predetermined time, and further pressurized.

Therefore, the sprayed water or oil adheres to the surface of the pelletized cultured fish feed substantially uniformly by stirring, and the pelletized cultured fish feed is compressed by depressurization and then returned to atmospheric pressure. When spilled, the pelletized cultured fish feed expands, and the water or oil adhering to the surface of the pelletized cultured fish feed penetrates into the pelletized cultured fish feed and is pressurized. As a result, the pelletized cultured fish feed further expands, and the infiltrated water or fat is impregnated into the entire pelletized cultured fish feed to soften it.

When the pelletized processed feed for aquaculture fish that has been manufactured and then reprocessed is administered to a fish farm in this manner, the biting of the feed in the fry will be improved and the fish will grow significantly. Moreover, when the cultured fish uses the pellet-shaped processed feed for the cultured fish that has been reprocessed after being produced,
It is softer and easier to swallow than conventional pelleted fish feed, and it is digested with a small amount of seawater.

[0011] Therefore, the ingestion of pathogenic bacteria is reduced, the constitution is strengthened, and the consumed energy for separating seawater into salt water and fresh water is converted into growth energy, so that the flesh of the cultured fish is improved. , The constitution of farmed fish is improved.

Further, as described in claim 2, while stirring the pellet-shaped cultured fish bait while spraying oil and fat on the surface of the pellet-shaped cultured fish bait, It is also possible to stir the pelletized cultured fish feed while spraying water, then reduce the pressure, return to atmospheric pressure after a lapse of a predetermined time, and further pressurize.

Therefore, the cultured fish will ingest a large amount of fats and oils as nutrients, and the growth rate will be further improved, and the antiseptic effect will be improved and long-term storage will be possible.

Further, as described in claim 3, while spraying a solution of water or oil mixed with a drug onto the surface of the pellet-shaped cultured fish feed, the pellet-shaped cultured fish feed is stirred, and thereafter. The pressure may be reduced, the pressure may be returned to the atmospheric pressure after a predetermined time has elapsed, and the pressure may be further increased. The term "medicine" as used herein refers to antibiotics, vitamins, and antioxidants.

In this case, pellets of the cultured fish feed can be sufficiently impregnated with antibiotics and vitamins, and the pelletized processed feed of the cultured fish impregnated with these agents can be sufficiently digested in the body of the cultured fish. As a result, the components of the drug are spread throughout the body of the cultured fish, which improves the resilience of the cultured fish to diseases and promotes the growth of the cultured fish. Furthermore, if impregnated with an antioxidant, it can be stored for a long period of time.

[0016] In addition, as described in claim 4, the pelletized processed feed for cultured fish according to any one of claims 1 to 3 is a method for reprocessing pelletized cultured fish feed. It was reprocessed by.

Therefore, if the pelletized cultured fish feed produced by impregnating water or oil is reprocessed by each of the above reprocessing methods, a good quality pelletized processed fish feed can be easily obtained. become.

According to a fifth aspect of the present invention, there is provided a method for cultivating a pelletized cultured fish feed of the present invention, wherein the pelletized cultured fish feed impregnated with oil and water is carried on a ship. The pelletized aquaculture fish bait according to any one of claims 3 to 4 was reprocessed by the reprocessing method, and the reprocessed aquaculture fish bait according to claim 4 was administered to the aquaculture fish. It is a thing.

Therefore, in a fish farm, pelletized cultured fish feed can be easily reprocessed in a short time.
It will be possible to directly administer the processed pellet for cultured fish in the form of soft pellets immediately after reprocessing, which is sufficiently impregnated with water and oils and fats.
The number of fry that grows well and good quality farmed fish with good meat will increase.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described. The method for reprocessing the pelletized cultured fish feed of the present invention, while spraying water on the surface of the pelletized cultured fish feed impregnated with oil and water, after stirring the pelletized cultured fish feed, The pressure is reduced, and after a lapse of a predetermined time, the pressure is returned to the atmospheric pressure, and the pressure is further increased.

By sufficiently impregnating the pellet-shaped cultured fish feed with water and oil, a soft pellet-shaped processed feed for cultured fish can be obtained, which prevents the cultured fish from fraying and prevents fry. It promotes growth, reduces the intake of seawater from cultured fish fry and adult fish, and promotes digestion to allow fry and adult fish to grow well.

[0022]

EXAMPLES Next, examples will be described. First, a schematic configuration of a processing device used when reprocessing the pelletized cultured fish feed of the present invention will be described with reference to FIGS. 1 and 2. The processing device is configured to be installed on board a ship (not shown), a base 1 installed on the ship, a metal stirring tank 5, and a ventilation pipe penetrating the stirring tank 5. 15, a support means 20 for the ventilation pipe 15 standing on the base 1, a motor 30 with a speed reducer for rotating the stirring tank 5, and a driving force of the motor 30 with a speed reducer is transmitted to the stirring tank 5. The driving force transmitting means 40 and the pressure adjusting means 50 for adjusting the pressure inside the stirring tank 5 are included. The pellet-shaped cultured fish feed may be floatable or sedimentable.

The stirring tank 5 comprises a horizontally long cylindrical body 6 and a substantially rectangular take-out port 7 formed in a part of the peripheral surface of the cylindrical body 6.
A closing lid 8 having an arcuate cross section of the outlet 7, and a cylindrical body 6
Disk-shaped side plates 9 hermetically welded to both left and right openings of the
9 and a through hole 1 formed in the central part of the both side plates 9, 9.
It has 0 and 10.

On the inner peripheral surface of the cylindrical body 6 of the stirring tank 5, a pair of parallel stirring blades (or stirring blades) 11,
... are fixed at equal intervals and inclined at a predetermined angle with respect to the axis of the stirring tank 5. Then, due to the rotation of the stirring tank 5 and the respective stirring blades 11, ..., The pellet-shaped cultured food for fish is swirled and stirred within the rotating stirring tank 5.

The closing lid 8 of the outlet 7 of the stirring tank 5 is
One long side has a plurality of hinges 12, ...
It is attached to the peripheral surface of the cylindrical body 6. Further, a substantially rectangular ring-shaped packing 13 is attached to the inner surface of the closing lid 8 along the peripheral edge of the inner surface of the closing lid 8 to ensure the airtightness of the outlet 7 of the cylindrical body 6. Moreover, the closing lid 8 is
An opening / closing handle 14 is provided at the center of the other long side.

Through holes 1 in both side plates 9, 9 of the stirring tank 5
Ring-shaped bosses 10a and 10a are respectively provided on 0 and 10 in a protruding manner. Further, on the inner peripheral surfaces of the both through holes 10, 10, the agitation tank 5 is fixed to the ventilation pipe 15 which is fixedly supported.
The bearings 10b and 10b are provided to rotate, and the annular packings 10c and 10c are provided to ensure airtightness between the left and right through holes 10 and 10 and the ventilation pipe 15.
c is attached.

The openings at both left and right ends of the ventilation pipe 15 are sealed by bottomed cylindrical stoppers 16 and 16, and one of the stoppers 16 (right side in FIG. 1) is provided with a piping screw 16a. ing. Further, in order to perform spraying of water and oil (fish oil) and deaeration and supply of air inside the stirring tank 5, a plurality of air vent tubes 15 are provided so as to be parallel to the axis of the vent tube 15. .. are formed in a plurality of rows, and the positions of the ventilation holes 17, ... In the opposite row and the positions of the ventilation holes 17, .. ing. That is, the center line of each vent hole 17, ... In the opposing row and the center line of each vent hole 17, ... In the adjacent row are formed so as to intersect with each other, and the entire vent pipe 15 is fluid (liquid or gas). Can be supplied and discharged, and water and fats (fish oil) are sprayed from the entire ventilation pipe 15, and deaeration and air supply inside the stirring tank 5 are performed.

The supporting means 20 is composed of supporting bodies 21 and 21 which are provided upright on both left and right sides of the base 1 with a predetermined interval. The support bodies 21 and 21 are mounted on the upper surface of the base 1 by mounting plates 22 and 22,
Vertical plates 23, 23 vertically provided in the center of 22,
Support portions 24 projecting from the upper side surfaces of the vertical plates 23,
24 and ribs 25, 25 that reinforce the vertical plates 23, 23.

The support portions 24, 24 of the support means 20 are provided with insertion holes 26, 26 of the ventilation pipe 15, and the support portions 24, 24 have insertion holes 26, 26 of the support portions 24, 24. The ventilation pipe 15 in which the tips of the threaded portions of the bolts 27, which are erected and screwed in the radially outward direction, are inserted into the support portions 24, 24.
The ventilation pipe 15 is pressed against both end portions of the and the ventilation pipe 15 is supported and fixed by both the support bodies 21 and 21.

The reduction gear motor 30 is driven by electricity or hydraulic pressure, is installed under one of the supports 21 (right side in FIG. 1), and has a drive shaft 31 of the reduction gear motor 30 with a small diameter drive side. The chain sprocket 41 is mounted on the shaft, a large-diameter driven side chain sprocket 42 is attached to the boss 10a on one side of the agitation tank 5, and a chain 43 is wound around both chain sprockets 41, 42. Side chain sprocket 41, chain 4
3. The drive transmission means 40 is composed of the chain sprocket 42 on the driven side.

When the motor with deceleration mechanism 30 is driven, the drive shaft 31 of the motor with deceleration mechanism 30 rotates,
This rotational force is reduced to a desired speed by a speed reduction mechanism (not shown), and the stirring tank 5 passes through the drive-side chain sprocket 41, the chain 43, the driven-side chain sprocket 42, and the boss 10a of the stirring tank 5. It will rotate in the direction of the arrow.

The pressure adjusting means 50 comprises a pressure reducing device 51 and a pressure increasing device 52 arranged side by side on the supporting means 20, and the pressure reducing device 51 and the pressure increasing device 52 respectively have a pressure reducing valve 53 and a pressure increasing valve 54. A pipe 55 is connected through the pipes 55, and the pipes 55 of the pressure reducer 51 and the pressurizer 52 are fastened to the pipe screw 16a of the one sealing plug 16 of the ventilation pipe 15 by the quick coupler 5.
It is detachably connected via 6.

Further, a decompression meter 57 of the decompressor 51 and a pressurization meter 58 of the pressurizer 52 are attached to the pipe 55. Then, the decompressor 51 decompresses the air inside the stirring tank 5 to a desired value while checking the decompression meter 57, and the pressurizer 52 depressurizes the inside of the stirring tank 5 to the atmospheric state. While checking at 58, pressurize to the desired value. A liquid supply pipe (not shown) to which a liquid such as water or oil is supplied is also connected to the one plug 16 of the ventilation pipe 15 via the quick coupler 56.

Next, a method of reprocessing pelletized processed feed for cultured fish will be described. First, hold the handle 14 of the closing lid 8 of the stirring tank 5, open the opening / closing lid 8 to open the outlet 7 of the stirring tank 5, and feed pellets for cultured fish, that is, dry pellets impregnated with oil and water. Is charged into the stirring tank 5, and the liquid supply pipe is connected to the piping screw 16a of the one sealing plug 16 of the ventilation pipe 15 via the quick coupler 56.

When water is supplied to the ventilation pipe 15 via the liquid supply pipe and at the same time the motor 30 with a speed reducer is driven, water is sprayed from the respective ventilation holes 17 of the ventilation pipe 15 onto the surface of the dry pellets. At the same time, the stirring tank 5 rotates, and the dry pellets are stirred by the stirring tank 5 and the stirring blades 17, .... At this time, water is almost uniformly attached to the surface of the dry pellet.

After that, the quick coupler to which the liquid supply pipe is connected is removed from one of the plugs 16 of the ventilation pipe 15, and the decompressor 52 and the pressurizer are attached to the one plug 16 of the ventilation pipe 15 via the quick coupler 56. When the pipe 55 of 53 is connected and the pressurizing valve 53 is closed, the depressurizing valve 54 is opened, and the inside of the stirring tank 5 is depressurized by the depressurizer 51, the dry pellets are compressed. When the depressurizing valve 53 is closed and the pressurizing valve 54 is opened to return the inside of the stirring tank 5 to the atmospheric pressure after a lapse of a predetermined time, the dry pellets are expanded, and the water to which the dry pellets are adhered inside the dry pellets. Will penetrate into. In this state, if the inside of the stirring tank 5 is pressurized by the pressurizer 52, the dry pellets are further expanded, and the water that has penetrated into the inside of the dry pellets is surely impregnated in about 2 to 3 minutes. Become.

Next, the pressurizing valve 54 is closed, the outlet 7 of the stirring tank 5 is opened, and the reprocessed pelletized processed feed for cultured fish is taken out from the outlet 7 of the stirring tank 5. At this time, for example, the dish-shaped receiving member 60 shown by the chain double-dashed line is positioned below the stirring tank 5, and the pellet-shaped processed food for cultured fish dropped from the outlet 7 of the stirring tank 5 by its own weight. It is received by the receiving member 60, and the pelletized processed feed for cultured fish is manually administered to the fish farm from the ship.

The cultured fish (fry and adult fish) having the pellet-shaped processed feed for cultured fish in its mouth has a sufficient amount of water impregnated in the pellet-formed processed feed for cultured fish, and thus the pellets put in the mouth The shaped bait for cultured fish is soft and easy to swallow, and is easily digested by the body of the cultured fish. Therefore, the cultured fish does not ingest a large amount of seawater and ingests pathogenic bacteria.

Further, the cultured fish having the pelletized processed feed for cultured fish as a mouth consumes a small amount of seawater, and therefore consumes little energy to separate the seawater into salt water and fresh water.
There is little consumption of physical strength, and you will grow up with a healthy constitution.

In the above embodiment, only the water is sprayed by using the processing apparatus shown in FIGS. 1 and 2, but oil and fat (fish oil) for ingesting calories is sprayed in the same manner as described above. You may do it. Alternatively, the oil and fat may be sprayed and stirred, and then water may be sprayed and stirred. When impregnated with fats and oils, the growth energy of the cultured fish is further improved and the fish can be stored for a long period of time.

Further, water or oil mixed with any one of antibiotics, vitamins, and oxidative preservatives, or a mixture of two or more thereof may be sprayed. In this case, aquaculture When the fish becomes sick or weak, it is possible to handle it when storing pelletized processed feed for aquaculture fish.

Further, the shape and size of each constituent member of the processing apparatus shown in FIGS. 1 and 2 are not limited to those shown in the drawings, and the design can be changed as appropriate, but the size can be set on the ship. It is preferable. Further, the reprocessing method and processing apparatus is not limited to pelletized cultured fish feed of only machi and kanpachi, other cultured fish, for example,
It goes without saying that it can also be applied to pelletized cultured fish baits such as sea bream and flounder.

[0043] In addition, the pelletized processed feed for cultured fish was reprocessed on board, but instead of on board, a processing plant was installed near the fish farm, and reprocessing was performed at the processing plant. Good. However, in this case, if the fish farm is far from the processing plant, it may be conveyed to the fish farm by a belt conveyor or a blower and automatically feed.

[0044]

INDUSTRIAL APPLICABILITY As described above, the method for reprocessing pelletized cultured fish feed according to the present invention is characterized in that water or oil is added to the surface of the pelletized cultured fish feed produced by impregnating oil and water. After spraying, the pelletized cultured fish feed was stirred, then decompressed, returned to atmospheric pressure after a lapse of a predetermined time, and further pressurized, so that the sprayed water was pelletized cultured fish feed. The whole of the inside can be impregnated, the bait of the bait is improved, and it is easy to swallow, and it is effective in preventing indigestion.

Moreover, the intake of seawater can be reduced, the infection of pathogenic bacteria can be reduced, a healthy constitution can be created, and it is effective for raising high quality aquaculture fish without wasting energy.

In the method for reprocessing pelletized cultured fish feed of the present invention, water is sprayed onto the surface of the pelletized cultured fish feed, and then oil and fat is sprayed onto the surface of the pelletized cultured fish feed. By doing so, the growth of the cultured fish is further improved, and moreover, it is effective for long-term storage of pellet-shaped cultured fish feed.

Further, in the method for reprocessing pelletized cultured fish feed according to the present invention, the solution of water or oil mixed with a drug is sprayed onto the surface of pelletized cultured fish feed. If the fish is sick or the farmed fish is debilitated, administration of antibiotics and vitamins has the effect of promptly responding.

[0048] In addition, the pellet-shaped processed feed for cultured fish reprocessed by each of the above-mentioned reprocessing methods uses water or oil or fat, water and oil or fat, or a drug mixed with water or oil or fat by using an existing device. Any of these can be impregnated easily and in a short time, and can be reprocessed at low cost.

According to the aquaculture method of the pelletized aquaculture fish feed of the present invention, the pelletized aquaculture fish feed produced by impregnating the oil and water is reprocessed on the ship and the aquaculture plant is operated. In the above, since the pelletized processed feed for cultured fish immediately after reprocessing, which is sufficiently impregnated with water and fats and oils, is directly administered, there is an effect of growing a large amount of nutrient-rich cultured fish.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing the configuration of a processing device used in the method for reprocessing pelletized cultured fish feed of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

1 base 5 stirring tanks 6 cylindrical body 7 Exit 8 Closure lid 9 Lid plate 10 through holes 10a boss 10b bearing 10c packing 11 stirring blades 12 hinges 13 packing 14 Toride 15 Vent pipe 16 plugs 16a Piping screw 17 ventilation holes 20 Supporting means 21 Support 22 Horizontal plate 23 Vertical Board 24 Support 25 ribs 26 through holes 27 volts 30 Motor with reducer 31 Drive axis 40 Drive transmission means 41 Drive side chain sprocket 42 Driven side chain sprocket 43 chains 50 pressure adjusting means 51 pressure reducer 52 Pressurizer 53 Pressure reducing valve 54 Pressurizing valve 55 piping 56 quick coupler 57 Decompression meter 58 Pressure meter 60 Receiving member

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2B005 GA01 GA02 GA03 GA04 HA02                       JA04 KA01 LA06 MA03 MB01                       NA01 NA11                 2B150 AA08 AB01 AE05 AE29 BA02                       BE10 CJ08 DA57 DE01 DG00                       DJ25 EC02

Claims (5)

[Claims] 1. A method for reprocessing pelletized cultured fish feed impregnated with oil and water, which comprises pelletizing aquaculture while spraying water or oil on the surface of the pelletized cultured fish feed. A method for reprocessing a pellet-shaped cultured fish feed, which comprises stirring the fish feed, reducing the pressure, returning to atmospheric pressure after a lapse of a predetermined time, and further pressurizing. 2. A method of reprocessing pelletized cultured fish feed impregnated with oil and water, wherein the pelletized cultured fish feed is sprayed with oil and fat on the surface thereof. After stirring, the pellet-shaped cultured fish feed is stirred while water is sprayed on the surface of the pellet-shaped cultured fish feed, and then the pressure is reduced, and after a lapse of a predetermined time, it is returned to atmospheric pressure and further added. A method for reprocessing pelletized cultured fish feed, which comprises pressing. 3. A method for reprocessing pelletized cultured fish feed impregnated with oil and water, wherein the surface of the pelletized cultured fish feed is sprayed with water or a solution in which a drug is mixed with oil. However, the pelletized cultured fish feed is stirred, then decompressed, returned to atmospheric pressure after a lapse of a predetermined time, and further pressurized, and the pelletized cultured fish feed is reprocessed. 4. A pellet-shaped processed feed for cultured fish, which is reprocessed by the method for reprocessing the pellet-shaped cultured fish feed according to any one of claims 1 to 3. 5. The pelletized cultured fish feed impregnated with oil and water is reprocessed on board by the method for reprocessing pelletized cultured fish feed according to any one of claims 1 to 3. Then, the pelletized processed feed for cultured fish according to claim 4 is administered to the cultured fish.