JP4005993B2 - Aquaculture equipment and feeding equipment - Google Patents

Description

The present invention relates to a feeding device which feed the aquaculture facility and young fish to develop juvenile.

  In order to cultivate fish such as tuna, it is necessary to feed them. In order to promote fish growth and improve meat quality, artificial feed containing nutrients necessary for fish is used. For example, Patent Document 1 discloses a technique for cultivating fish by supplying artificial feed.

JP-A-10-229830

  Thus, when artificial fish is fed as a bait and the fish is cultivated, if the fish to be cultivated is a pre-adult larva, even if the amount of food is not insufficient, cannibalism occurs between the cultivated young fish However, the aquaculture efficiency deteriorates.

Therefore, an object of the present invention is to provide a farming equipment and supply feed device capable of increasing the farming efficiency by suppressing the occurrence of cannibalism.

The present invention is an aquaculture tank in which aquaculture water is stored and a plurality of cultivated juvenile fish are cultivated;
It is a culture facility characterized by including a feeding device that discharges a live feed fish smaller than the cultivated larvae into the culturing tank in a direction opposite to the direction in which the cultivated larvae swim .

  According to the present invention, a feeding fish smaller than the cultivating target larvae is released by the feeding device to the culturing tank in which the cultivating target larvae are cultivated, and the culturing target juvenile fish is fed as a feed fish. For cultivated juveniles, feed fish smaller than themselves are easier to eat than other cultivated juveniles of the same size as cultivated together in a culture tank. As a result, the cultivated larvae eat prey fish instead of eating other cultivated larvae, so that cannibalism between the cultivated larvae can be suppressed.

According to the present invention, the young cultivated fish are directed in the same direction, and the young cultivated fish and the feed fish are in opposite directions. This makes it easier for the cultivated larvae to encounter feed fish compared to other cultivated larvae. Therefore, it is possible to increase the opportunities for the young fish to be cultivated to eat the feed fish.

Moreover, this invention is characterized by having a feed container provided with the discharge | release part which is arrange | positioned in a culture tank and accommodates a feed fish and discharge | releases a feed fish.

In the present invention, the bait container is
A container body in which an outlet for containing the feed fish and discharging the feed fish is formed;
An opening and closing member for opening and closing the discharge port of the container body,
The discharge part is formed including the peripheral part of the discharge port of the container main body and the opening / closing member.

According to this invention, the discharge port of the container main body in which the fish for food is accommodated is opened and closed by the opening / closing member. When the discharge port is closed, release of the feed fish accommodated in the feed container is prevented, and when the discharge port is opened, the feed fish stored in the feed container is released. Thereby, the release and release stop of the feed fish can be controlled by opening and closing the discharge port by the opening and closing member.

Moreover, this invention is a feeding apparatus.
An opening / closing driving means for opening / closing the opening / closing member;
It further has a control means for controlling the opening / closing drive means so as to open the discharge port periodically.

According to the present invention, the opening and closing of the discharge port by the opening and closing member can be controlled by controlling the opening and closing drive means by the control means.

Further, the present invention is characterized in that the feeding device releases feeding fish at a plurality of release positions scattered over a wide area of the culture tank.

According to the present invention, since the feed fish is released at the release positions scattered over a wide range of the aquaculture tank, it is biased only to a part of the culture target young fish, preventing the feed fish from being fed, Feeding fish can be given almost uniformly to the young fish to be cultured. As a result, it is possible to prevent the emergence of the cultured young fish that eat the other cultured young fish without being able to eat the feed fish.

Further, the present invention is characterized in that the feeding device periodically releases feeding fish.
  According to the present invention, feed fish are regularly given to the young fish to be cultured. As a result, the young fish to be cultured is prevented from being in a state of not eating food for a long time.

The present invention further includes a flow down device for flowing down the aquaculture water,
The aquaculture tank is formed in a curved ring,
The flow down device is characterized in that the water for culture flows down to one side in the circumferential direction of the culture tank.

  According to the present invention, the aquaculture water is caused to flow down in the circumferential direction by a flow-down device through a culture tank formed in an annular shape. This makes it possible to swim each culture target larvae in the same direction using the habits of the culture target larvae, and prevent the culture target larvae from colliding with each other vigorously. Moreover, the aquaculture tank has a curved ring shape, and it is possible to prevent the young fish to be cultured from colliding with the aquaculture tank vigorously.

The present invention is characterized by further comprising a purifier that turn into the aquaculture water purification.
According to the present invention, the culture water is purified by the purification device, so that the environment of the culture tank can be improved. Accordingly, it is possible to prevent the aquaculture water from deteriorating and to prevent adverse effects on the cultivated juvenile fish.

  Further, the present invention is characterized in that the larvae to be cultured are tuna larvae, and the feed fish is a salmon larvae.

  According to the present invention, the relatively easy-to-produce carp larvae are used as food, and the tuna larvae can be grown while preventing cannibalism and can be cultivated with high aquaculture efficiency.

The present invention, aquaculture water is stored, to a farming tank farming target juvenile plurality tails are grown, a feeding device for releasing the fish bait alive smaller than aquaculture target juvenile,
A container main body in which a discharge port for containing the feed fish and discharging the feed fish is formed, and a feed container having an opening and closing member for opening and closing the discharge port;
An opening / closing driving means for opening / closing the opening / closing member;
It is a feeding apparatus characterized by having a control means which controls an opening-and-closing drive means so that a discharge port may be opened regularly.

  According to the present invention, a feeding fish smaller than the cultivating target larvae is released by the feeding device to the culturing tank in which the cultivating target larvae are cultivated, and the culturing target juvenile fish is fed as a feed fish. For cultivated juveniles, feed fish smaller than themselves are easier to eat than other cultivated juveniles of the same size as cultivated together in a culture tank. As a result, the cultivated larvae eat prey fish instead of eating other cultivated larvae, so that cannibalism between the cultivated larvae can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, cannibalism of the culture target young fish can be suppressed by giving a feed fish to the culture target young fish, and the culture efficiency of the culture target young fish can be increased.

  Further, according to the present invention, it is possible to make it easier for the cultivated juvenile fish to encounter the feed fish. Therefore, cannibalism between the young fish to be cultured can be suppressed as much as possible, and the culture efficiency can be further improved.

  Moreover, according to this invention, the fish for a feed can be given to the young fish to culture using a food container. It also contains feed fish. Moreover, the fish for a feed can be handled easily and can raise the convenience.

  Further, according to the present invention, the release and release stop of the feed fish can be controlled by opening and closing the release port by the opening and closing member, and the feed fish is released only when it is necessary to give the feed fish to the cultured fish. be able to.

  Further, according to the present invention, the opening / closing drive means is controlled by the control means, and the feeding device can be operated so that the feeding fish is released only when it is necessary to feed the young fish to be cultured.

Further, according to the present invention, it is possible to give a forage fish almost uniformly to each of the aquaculture target larvae, so that the aquaculture target larvae that eat other aquaculture target larvae appear without being able to eat the feed fish. Can be prevented. Therefore, cannibalism between the young fish to be cultured can be suppressed as much as possible, and the culture efficiency can be further improved.
Moreover, according to this invention, it is prevented that the culture | cultivation object young fish will be in the state which does not eat the fish for feed over a long period of time, and cannibalism between the culture object larvae can be suppressed as much as possible. Therefore, the aquaculture efficiency can be further improved.
Moreover, according to this invention, it can prevent that the culture | cultivation target larva collides with a culture tank and other culture | cultivation object larvae, and can be damaged using the habit of the culture | cultivation target larvae.

  Further, according to the present invention, it is possible to prevent the cultivated larvae from getting sick or die due to the deterioration of the aquaculture water, and maintain an environment in which the cultivated larvae can grow healthy.

  Further, according to the present invention, tuna larvae can be cultured with high aquaculture efficiency using salmon larvae.

  Moreover, according to this invention, the aquaculture equipment which suppresses cannibalism between the culture target young fish and achieves high aquaculture efficiency is realizable.

  FIG. 1 is a perspective view showing an aquaculture facility 1 according to an embodiment of the present invention as viewed obliquely from above. FIG. 2 is a perspective view showing the aquaculture equipment 1 when viewed in a substantially horizontal direction. FIG. 3 is a plan view showing the aquaculture equipment 1 as viewed from above. The aquaculture facility 1 is a facility for culturing a young fish to be cultivated. The juvenile to be cultured is not particularly limited, but in the present embodiment, for example, the tuna juvenile 2 is used. In the present invention, the juvenile fish is a general term for fish before becoming adult fish, and includes fry and larvae.

  The aquaculture facility 1 basically includes a culture tank 5 and a feeding device 6. In the present embodiment, the aquaculture equipment 1 includes a water amount adjusting device 7, a flow-down device 8, and a purification device 9 in addition to the culture tank 5 and the feeding device 6.

  The aquaculture tank 5 is a tank that opens upward and stores aquaculture water. Specifically, it has an annular bottom 10 and an inner wall 11 and an outer wall 12 rising from the inner and outer peripheries of the bottom 10, respectively, and is formed in an annular shape extending along a curve. The shape of the aquaculture tank 5 is not particularly limited, and may be an elliptical annular shape, a substantially polygonal annular shape with corners having an arc shape, or the like, but in the present embodiment, it is a circular annular shape. The aquaculture tank 5 is supported by a plurality of support pillars 13 and is installed on the floor of the aquaculture farm with the bottom 10 disposed horizontally. The aquaculture tank 5 is nurtured by releasing a plurality of tuna larvae 2 in the stored aquaculture water.

  The feeding device 6 is a device for releasing a feeding fish smaller than the tuna juvenile 2 into the aquaculture tank 5. The feed fish is not limited as long as it is a fish that can serve as a food for the tuna juvenile 2, but in the present embodiment, it is the larva 15 of the salmon. Larvae are fish that have just been born. The salmon is relatively easy to cultivate compared to a tuna and the like, and can be easily hatched from the egg to produce the salmon larva 15 easily. Moreover, the artificially hatched salmon larvae 15 include larvae that are distorted or scratched and have no commercial value even if they are grown until they become adults. End up. It is preferable to use the salmon larva 15 to be disposed of as such as a feed fish, and resources can be used effectively.

  The feeding device 6 includes a bait container 16 that releasably accommodates the larvae larva 15 and a bait feeder 17 that feeds the larvae larvae 15 into the bait container 16. The bait container 16 is a tubular container in which one end portion 18 is closed and the other end portion 33 is opened, and the circumferential direction A extends from the one end portion 18 to the other end portion 33 along the outer wall 12 in the culture tank 5. It is arranged to extend. The bait container 16 is provided in a state of being immersed in the aquaculture water, and the larva 15 of the salmon accommodated in the aquaculture tank 5 from a plurality of discharge portions 19 provided at intervals in the axial direction of the bait container 16. Can be released. Each discharge | release part 19 is arrange | positioned at intervals in the circumferential direction of the culture tank 5. FIG.

  The bait feeder 17 has a hopper 20 and a connecting pipe 21, and the hopper 20 is connected to the other end 33 of the bait container 16 by the connecting pipe 21. The bait feeder 17 can guide the carp larva 15 introduced into the hopper 20 by an operator or the like to the bait container 16 via the connection pipe 21. Such a feeding device 6 can release the larvae larvae 15 at a plurality of release positions scattered over a wide range of the culture tank 5, and thus at the positions where the respective release portions 10 are provided.

  The water amount adjusting device 7 has a water supply means 22 for supplying the culture water to the culture tank 5 and a drainage means 23 for discharging the culture water in the culture tank 5. The water amount adjusting device 7 adjusts the supply flow rate of the aquaculture water by the water supply means 22 and the discharge flow rate of the aquaculture water by the drainage means 23, thereby adjusting the amount of the aquaculture water stored in the culture tank 5 (reserved amount). Can be adjusted.

  The water supply means 22 has a water supply pipe 25 whose one end 24 is connected to the bottom 10 of the culture tank 5, and can supply the aquaculture water from a water source by the power of a pump 26 interposed in the water supply pipe 25. it can. The supply flow rate can be adjusted by controlling the operation amount such as the rotation speed of the pump 26. The water source may be a natural water source such as the ocean, or an artificial water source such as a tank or a pond. In the present embodiment, seawater is pumped from the ocean and supplied as aquaculture water. In another embodiment, the water may be artificially processed, such as removing foreign substances, dirt, and germs.

  The drainage means 23 has a drain pipe 28 connected to the culture tank 5. In the aquaculture tank 5, a discharge recess 29 is formed at one place in the circumferential direction with the bottom 10 recessed downward. One end portion 33 of the drainage pipe 28 is connected to the discharge recess 29, and the aquaculture water in the culture tank 5 can be discharged by its own weight via the drainage pipe 28. A flow rate adjustment valve 34 is interposed in the drain pipe 28, and the discharge flow rate can be adjusted by operating the flow rate adjustment valve 34.

  The water supply means 22 and the drainage means 23 are provided such that one end portion 24 of the water supply pipe 25 is disposed at a position close to the circumferential direction A side with respect to the discharge recess 29. Therefore, the supply position and discharge position of the aquaculture water are close to each other in the circumferential direction.

  The flow-down device 8 is a means for applying power to the aquaculture water stored in the culture tank 5 so as to flow down in one circumferential direction A, which is one circumferential direction. In the present embodiment, the flow-down device 8 is realized by a blowing means, and air is sent from the blower 35 to the blower 36 provided on the upper part of the culture tank 5 and blown in the circumferential direction A from the blower 36. The air may be ejected into the aquaculture water, but in the present embodiment, the air is ejected along the water surface above the aquaculture water. As a result, the aquaculture water flows down in the circumferential direction A. The ejector 36 is disposed in the vicinity of the one end 24 of the water supply pipe, and is disposed, for example, above the water supply pipe 24 or slightly around the circumferential direction A.

  The purification device 9 has a bubbling means 40 and a denitrification means 41. The bubbling means 40 sends air from the blower 44 to the bubble discharger 43 provided at the bottom 10 of the culture tank 5 and discharges it as fine bubbles from the bubble discharger 43 into the aquaculture water. By discharging the bubbles in this manner, fine solids such as residual food and excreta mixed in the aquaculture water can be captured by the bubbles. The solid matter thus captured can be removed by a filtering device such as a filter, and an operator can scoop it with a net or the like.

The denitrification means 41 changes the ammonia contained in the aquaculture water by excreting the tuna juvenile 2 to nitric acid via nitrous acid, and further converts the nitric acid to nitrogen gas (N ₂ ) or nitrous oxide gas (N ₂ O ) And release to the atmosphere. Such a change is realized by using, for example, bacteria or bacteria. The denitrification means 41 is disposed at one position in the circumferential direction of the culture tank 5 below the bulging portion 46 formed by the outer wall portion 12 bulging outward in the radial direction. The bulging part 46 is arrange | positioned in the position where the discharge recessed part 29 is formed regarding the circumferential direction.

  The purification device 9 purifies the aquaculture water by removing solids and decomposing and removing ammonia. In the purifying device 9, the bubble discharge portion 43 of the bubbling means 40 is provided at a position close to the discharge recess 29 on the side opposite to the circumferential direction A. Therefore, the bubble discharge part 43 and the denitrification means 41 of the bubbling means 40 are close to each other in the circumferential direction.

  As described above, the aquaculture equipment 1 is provided with the water amount adjusting device 7, the flow-down device 8 and the purification device 9 in a concentrated manner in a circumferential direction of the aquaculture tank 5, and the aquaculture water whose water amount has been adjusted by the water amount adjusting device 7 is supplied to the aquaculture tank. 5, and flows down in the circumferential direction A by the flow down device 8 while being purified by the purification device 9. In the aquaculture facility 1, the tuna juvenile 2 is released into the aquaculture tank 5 and is fed with food as appropriate. The bait fed to the tuna larva 2 may be only the carp larva 15 fed by the feeding device 6, but an artificial feed may be separately fed as the bait.

  The feeding device 6 for supplying the larvae larvae 15 to the tuna larva 2 has a whole remaining portion except for a part in the circumferential direction where the food container 16 is provided with the water amount adjusting device 7, the flow-down device 8 and the purification device 9 of the culture tank 5. And extending in the circumferential direction. The bait container 16 extends from the other end portion 33 toward the one end portion 18 in a direction opposite to the circumferential direction A. The carp larva 15 introduced from the bait thrower 17 passes through the bait container 16 in the circumferential direction. It swims and moves in the direction opposite to A, and is released into the aquaculture tank 5 in a posture facing the direction opposite to the circumferential direction A by the operation of the discharge unit 19.

  The tuna juvenile 2 swims along the flow of water, and therefore swims and moves in the one-round direction A. Accordingly, the feeding device 6 releases the larvae larvae 15 in a direction opposite to the posture of the tuna larva 2 in the direction opposite to the direction of the tuna larva 2 swimming (circumferential direction A). The tuna larva 2 can eat salmon larvae 15 released by the feeding device 6.

  FIG. 4 is a cross-sectional view showing a part of the feeding device 6. The food container 16 of the feeding device 6 includes a container body 50 and a plurality of opening / closing members 51. The container body 50 has a tubular shape in which one end portion 18 is closed and the other end portion 33 is opened, is curved in an arc shape, and extends in the circumferential direction of the culture tank 5. A plurality of discharge ports 53 are formed in the container body 50 at intervals in the axial direction. One end portion 18 of the container main body 50 becomes one end portion of the bait container 16, the other end portion 33 of the container main body 50 becomes the other end portion of the bait container 18, and the container main body 50 is provided in the culture tank 5. The outlet 53 is disposed on the radially inward side with an interval in the circumferential direction of the culture tank 5.

  Each opening / closing member 51 is a plate-like member and is provided in each discharge port 53. Each open / close member 51 is supported at the peripheral edge of the discharge port 53 in the container main body 50, specifically, at the peripheral edge on the circumferential direction A side so as to be angularly displaceable around, for example, a vertical axis. 53 can be opened and closed. FIG. 4 shows the discharge port 53 in an open state. The discharge part 19 is configured to include the peripheral edge of the discharge port 53 of the container body 50 and the opening / closing member 51, and each discharge part 19 stops the discharge of the carp larvae 15 by closing the discharge port 53, By opening the discharge port 53, the larva 15 can be discharged as indicated by an arrow B.

  Each discharge part 19 is the structure which controls discharge | release and stop of discharge | release of the salmon larva 15 by opening and closing the discharge port 53. FIG. The release of the shark larva 15 may be the release of the shark larva 15 swimming by itself when the discharge port 53 is open. May be released by forcibly delivering.

  FIG. 5 is an enlarged cross-sectional view of the discharge unit 19 of the feeding device 6. The feeding device 6 includes an opening / closing driving means 55 that opens / closes the opening / closing member 51. The opening / closing drive means 55 includes a spring member 56 that applies a spring force in the closing direction to the opening / closing member 51, and a pressurizer 57 that pressurizes the aquaculture water in the bait container 16, and thus in the container body 50.

  The spring member 56 is realized by, for example, a torsion coil spring, and one end is connected to the container body 50 and the other end is connected to the opening / closing member 51. The spring member 56 is provided so as to be in a natural state when the opening / closing member 51 closes the discharge port 53. When the opening / closing member 51 opens the discharge port 53, the spring member 56 opens and closes a spring force that is an elastic recovery force. The opening / closing member 51 gives the member 51 in the direction of closing the discharge port 53. Therefore, the opening / closing member 51 is stable by closing the discharge port 53 by the spring member 56 in a state where no external force is applied. The spring member 56 is preferably a metal spring provided with a coating for preventing corrosion or a spring made of a material resistant to corrosion such as a synthetic resin.

  Although the illustration of a specific configuration of the pressurizer 57 is omitted, for example, using a pump or the like, a pressing fluid such as aquaculture water or air is supplied from the vicinity of the other end 33 of the container body 50 or from the hopper 20 to the container body 50. It may be realized by a structure that presses by supplying. When the pressing fluid is supplied from the hopper 20, the pressing fluid is configured to be detachable from the hopper 20, and may be removed when the salmon larva 15 is introduced. The pressurizer 57 may be realized by a configuration in which a piston is provided in the vicinity of the other end portion 33 of the container body 50 and the piston is pressed toward the one end portion 18 by a fluid pressure cylinder.

  The opening / closing drive means 55 having such a spring member 56 and the pressurizer 57 is the open / close member 51 in a state where the press of the water for cultivation in the container main body 50 by the pressurizer 57 is stopped, and thus in a state where no pressure is applied. Is disposed at a position where the discharge port 53 is closed by the spring force of the spring member 56, and the discharge port 53 is closed. On the other hand, the opening / closing drive means 55 springs the opening / closing member 51 with the aquaculture water in the container body 50 in a state where the aquaculture water in the container body 50 is being pressed by the pressurizer 57, and thus in a pressurized state. The discharge port 53 is pressed against the spring force of the member 56 to open the discharge port 53 to open the discharge port 53. Thus, the opening / closing drive means 55 can open / close the discharge port 53 by opening / closing the opening / closing member 51.

  The opening / closing drive means 55 using the pressurizer 57 is configured to open the discharge port 53 by discharging the aquaculture water in the container body 50 from the discharge port 53 to the outside of the container body 50. The larva 15 can be forcibly delivered. Thus, by providing the means for forcibly feeding the carp larvae 15 which is also used as the pressurizer 57, it is possible to ensure the release of the carp larvae 15 as compared with the structure in which the carp larvae 15 swim by themselves. .

  FIG. 6 is a block diagram showing an electrical configuration of the feeding device 6. The feeding device 6 further includes an input means 60 for inputting information, a storage means 61 for storing information, a timer means 62 for measuring time, and a control means 64 for controlling the opening / closing drive means 55.

  The input unit 60 generates information to be input based on an operation by the operator and supplies the information to the control unit 64. The operator can input information necessary for controlling the opening / closing drive means 55 by the control means 64 by operating the input means 60. The information necessary for the control includes, for example, information indicating an opening operation interval time TO that represents an opening operation start time interval for opening the discharge port 53 and an opening continuation time TK that represents a time during which the opening operation is continued. The opening operation interval time TO is longer than the opening duration time TK.

  The storage unit 61 is a unit that is realized by a semiconductor memory or the like and stores information according to the control of the control unit 64, and stores information necessary for the control of the opening / closing drive unit 55 by the control unit 64. When the input means 60 is operated and information indicating the opening operation interval time TO and the opening continuation time TK is input, the control means 64 controls the storage means 61 so as to store the information, and thereby the opening operation interval. Information indicating the time TO and the open duration TK is stored in the storage unit 61.

  The timer means 62 is means for measuring time based on the control of the control means 64, and has first and second timer sections. Each timer unit can measure time individually. When the control unit 64 instructs to start measurement, the timer unit is reset and measures time from that time.

  The control means 64 is realized by a microcomputer or the like. The control means 64 periodically opens the discharge port 53 based on the opening operation interval time TO and the opening continuation time TK stored in the storage means 61 and the time measured by the timer means 62. The open / close driving means 55 is controlled.

  FIG. 7 is a flowchart showing the control operation of the control means 64. The control unit 64 starts the control in step s0 when the start condition such that the power supply of the feeding device 6 is turned on or information for instructing to start the control is input by the input unit 60 is satisfied. In step s1, the timer means 62 is reset, so that the first measurement time T1 by the first timer unit is set to 0, the time measurement by the first timer unit is started, and the process proceeds to step s2.

  In step s2, it is determined whether or not the first measurement time T1 is equal to or longer than the opening operation interval time TO stored. When the first measurement time T1 is equal to or longer than the opening operation interval time TO, the process proceeds to step s3, and when it is less, the process returns to step s2. Then, in step s3, the opening / closing drive means 55 starts the opening operation of the discharge port 53, and in step s4, the timer means 62 is reset, and the first measurement time T1 and the second measurement time T2 by the second timer unit are obtained. The time is set to 0 and the first and second timer units start measuring time.

  Next, in step s5, it is determined whether or not the second measurement time T2 is equal to or longer than the open continuation time TK that has been set and stored. When the second measurement time T2 is equal to or longer than the open duration TK, the process proceeds to step s6, and when it is less, the process returns to step s5. In step s6, the opening / closing drive means 55 ends the opening operation of the discharge port 53, and the process returns to step s2. The control means 64 repeats such a series of control operations until the end condition such that the power supply of the feeding device 6 is turned off and information for instructing to end the control is input by the input means 60 is satisfied. Execute.

  FIG. 8 is a timing chart showing the opening / closing operation of the discharge unit 19. When the control by the control means 64 is started at time t0, the discharge unit 19 opens the discharge port 53 over the open continuation time TK from time t1 to time t2 after the elapse of the opening operation interval time TO. Then, the discharge port 53 is opened over the open continuation time TK from the time t3 to the time t4 after the elapse of the opening operation interval time TO from the time t1. Furthermore, the discharge port 53 is opened over an open continuation time TK from time t3 to time t6 after the elapse of the opening operation interval time TO from time t3. Thus, the discharge port 53 is opened and closed periodically.

  The above-described control operation by the control means 64 is a control operation for one discharge unit 19, and such a control operation is executed for each discharge unit 19. At this time, the opening operation interval time TO and the opening continuation time TK may be set to the same value or different values for the respective emission units 19. In the case where the opening operation interval time TO and the opening continuation time TK are set to the same value, if the control start times are made to coincide, the discharge units 19 are opened and closed at the same timing, and the control start times are shifted. It can be opened and closed at different timings. When either one of the opening operation interval time TO and the opening continuation time TK is set to a different value, the opening / closing operation can be performed at different timings for each discharge unit 19.

  According to the aquaculture equipment of the present embodiment, the larvae larva 15 smaller than the tuna larva 2 is released by the feeding device 6 into the culturing tank 5 for growing the tuna larva 2, and the larvae 2 Larvae 15 are fed as food. For the tuna larvae 2, the larvae 15 smaller than themselves are easier to eat than other tuna larvae 2 of the same size as the larvae 15 grown together in the culture tank 5. Accordingly, the tuna larva 2 eats the larva larvae 15 instead of eating the other tuna larvae 2, so that cannibalism between the tuna larvae 2 can be suppressed. Therefore, the culture efficiency of the tuna juvenile 2 can be increased.

  In addition, the feeding device 6 has a plurality of discharge parts 19, and the spider larvae 15 are discharged at the discharge positions scattered over a wide range of the aquaculture tank 5, so that it is biased only to some tuna larvae 2, It is possible to prevent the larvae larva 15 from being provided, and to provide the larvae larvae 2 of each tuna almost uniformly. As a result, it is possible to prevent the appearance of the tuna larva 2 that eats the larvae 15 of other tuna without being able to eat the larvae 15 of the salmon.

  Moreover, the water for aquaculture in the aquaculture tank 5 is caused to flow down in one round direction by the flow-down means 8, and the swimming direction is unified by using the correction of the tuna larva 2 to prevent the tuna larvae 2 from colliding with each other vigorously. Can do. In addition, the culture tank 5 has a curved ring shape, and the tuna larva 2 can be prevented from colliding with the culture tank 5 vigorously. In this way, the tuna juvenile 2 can be prevented from being damaged.

  Furthermore, after unifying the swimming direction using the modification of the tuna larva 2 in this way, the larvae larva 15 is released in the opposite direction to the swimming direction of the tuna larva 2 by the discharge part 19 having the structure described above. Is done. Therefore, the tuna larvae 2 face in the same direction, and the tuna larvae 2 and the salmon larvae 15 face in opposite directions. This makes it easier for the tuna larvae 2 to encounter the carp larvae 15 than the other tuna larvae 2, so that the tuna larvae 2 have more opportunities to eat the carp larvae 15 and cannibalism. It can be further suppressed.

  Moreover, in the feeding apparatus 6, each discharge | release part 19 is controlled and the larva larva 15 is discharge | released regularly. Therefore, the larvae larvae 15 are regularly given to the tuna larvae 2 to prevent the larvae larvae 15 from being eaten for a long time. In this way, cannibalism can be further suppressed.

  Moreover, since the bait container 16 of the feeding apparatus 6 that accommodates the larvae 15 of the salmon is disposed in the aquaculture tank 5 and is immersed in the aquaculture water, the larvae of the salmon 15 remain alive in the bait container 16. It can be accommodated for a long time. Therefore, it is possible to easily handle the carp larvae 15 without being restricted in handling the carp larvae 15 such that the carp larvae 15 must be accommodated in the bait container 16 and immediately released.

  Moreover, since the culture water of the culture tank 5 is purified by the purification device 9, the environment of the culture tank 5 can be improved. Therefore, it is possible to prevent the aquaculture water from deteriorating, to prevent adverse effects of the tuna on the juvenile fish 2, and to realize suitable aquaculture. Moreover, since the larvae 15 of the salmon which is comparatively easy to produce is used as a food, the tuna larvae 2 can be grown while preventing cannibalism and can be cultivated with high aquaculture efficiency.

  FIG. 9 is an enlarged cross-sectional view of a part of a feeding device 6A provided in the aquaculture facility 1 as another embodiment of the present invention. The present embodiment shown in FIG. 9 is similar to the above-described embodiment shown in FIGS. 1 to 8, and only different configurations will be described, and description of similar configurations will be omitted. In the present embodiment, the opening / closing drive means 55 </ b> A of the feeding device 6 </ b> A has an opening mechanism 69 instead of the pressurizer 57.

  The opening mechanism 69 is configured to rotate the pulley 70 in both forward and reverse directions, the pulley 70 provided rotatably, the cable body 71 having one end connected to the pulley 70 and the other end connected to the opening / closing member 51. Drive motor 72. In the opening mechanism 57, when the pulley 70 is rotated in one direction by the driving motor 72, the strip body 71 is wound up by the pulley 70, and the opening / closing member 51 is against the spring force of the spring member 56. Can be angularly displaced in the opening direction. Further, when the opening mechanism 57 rotates the pulley 70 in the other direction by the drive motor 72, the strip 71 wound around the pulley 70 is fed out, and the angular displacement in the direction in which the discharge port 53 of the opening / closing member 51 is closed. Can be tolerated. As a result, the opening / closing member 51 can be angularly displaced in the direction of closing the discharge port 53 by the spring force of the spring member 56.

  Even in the configuration using the opening mechanism 69 as described above, the spout larva 15 can be released by opening and closing the discharge port 53. The configuration using the opening mechanism 69 is not a configuration for forcibly sending the larvae larva 15, but this configuration may be used. Alternatively, the larvae larva 15 may be forcibly sent out in combination with the pressurizer 57 described above.

  FIG. 10 is an enlarged cross-sectional view of a part of a feeding device 6B provided in the aquaculture facility 1 as still another embodiment of the present invention. The present embodiment shown in FIG. 10 is similar to the above-described embodiment shown in FIGS. 1 to 8, and only different configurations will be described, and description of similar configurations will be omitted. In the present embodiment, the opening / closing drive means 55B of the feeding device 6B has an opening / closing motor 80 instead of the pressurizer 57 and the spring member 56.

  The opening / closing motor 80 is a motor that angularly drives the opening / closing member 51 in both forward and reverse directions. The opening 53 can be opened and closed by angularly displacing the opening / closing member 51 by the opening / closing motor 80. The configuration using the opening / closing motor 80 is not a configuration in which the carp larvae 15 are forcibly delivered, but this configuration may be used. Alternatively, the larvae larva 15 may be forcibly sent out in combination with the pressurizer 57 described above.

  FIG. 11 is a plan view showing an aquaculture facility 1C according to still another embodiment of the present invention. The present embodiment shown in FIG. 11 is similar to the above-described embodiment shown in FIGS. 1 to 8, and only different configurations will be described, and description of similar configurations will be omitted. In the aquaculture facility 1C of the present embodiment, a plurality of, in the present embodiment, two aquaculture tanks 5 are provided concentrically, and a feeding device 6, a water amount adjusting device 7, a flow-down device are associated with each of the aquaculture tanks 5. 8 and a purification device 9 are provided. With such a configuration, the space can be used effectively.

  In still another embodiment of the present invention, three or more culture tanks 5 may be provided. Thus, when providing the some culture tank 5, you may make it use feeding apparatus 6A, 6B of FIG. 9 and FIG. 10 as a feeding apparatus.

  The above-described embodiment is merely an example of the present invention, and the configuration can be changed. For example, instead of the annular culture tank 5, a spiral culture tank that swirls around a vertical axis may be used, and the aquaculture water may flow down using a gradient. In addition, the feeding device, the water amount adjusting device, the flow-down device, and the purification device are not limited to the above-described configuration, and may be any device that can achieve the object. For example, the feeding device 6 may be configured to release the carp larvae 15 into the aquaculture tank 5. To describe a specific modification, the feeding device 6 is configured to open and close the discharge port by sliding the opening and closing member. Alternatively, the opening / closing member may be formed of an elastic material such as rubber, and the discharge port 53 may be automatically closed if no external force is applied without using a spring member. Moreover, the structure which adjusts by providing the weir which can change height and changing the height may be sufficient as a water quantity adjusting device. In addition, the water amount adjusting device, the flow-down device, and the purification device are not essential, so these devices do not have to be provided and can be appropriately selected and provided.

It is a perspective view which shows the aquaculture equipment 1 of one Embodiment of this invention seeing from diagonally upward. It is a perspective view which shows aquaculture equipment 1 seeing from a substantially horizontal direction. It is a top view which shows aquaculture equipment 1 seeing from upper direction. It is sectional drawing which shows a part of feeding apparatus 6. FIG. It is sectional drawing which expands and shows the discharge | release part 19 of the feeding apparatus 6. FIG. It is a block diagram which shows the electrical structure of the feeding apparatus. 7 is a flowchart showing a control operation of the control means 64. 6 is a timing chart showing an opening / closing operation of the discharge unit 19. It is sectional drawing which expands and shows a part of feeding apparatus 6A provided in the aquaculture equipment 1 as another form of implementation of this invention. It is sectional drawing which expands and shows a part of feeding apparatus 6A provided in the aquaculture equipment 1 as another form of implementation of this invention. It is a top view which shows the culture equipment 1C of the further another form of implementation of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Aquaculture equipment 2 Tuna juvenile 5 Aquaculture tank 6 Feeding device 7 Water flow control device 8 Flowing device 9 Purifying device 16 Feeding container 17 Feeding device 19 Discharge part 50 Container body 51 Opening / closing member 53 Release port 55, 55A, 55B Opening / closing drive means 56 Spring member 57 Pressurizer 64 Control means 69 Opening mechanism 80 Opening / closing motor

Claims (10)

An aquaculture tank in which aquaculture water is stored and a plurality of cultivated juvenile fish are cultivated;
An aquaculture facility comprising: a feeding device that discharges a live bait fish smaller than an aquaculture target juvenile into a culture tank in a direction opposite to the direction in which the aquaculture target juvenile swims.   The aquaculture equipment according to claim 1, wherein the feeding apparatus includes a feeding container that is disposed in the aquaculture tank and includes a discharge unit that accommodates the feeding fish and discharges the feeding fish. The bait container
A container body in which an outlet for containing the feed fish and discharging the feed fish is formed;
An opening and closing member for opening and closing the discharge port of the container body,
The aquaculture equipment according to claim 2 , wherein the discharge part is formed including a peripheral part of the discharge port of the container body and an opening / closing member . The feeding device
An opening / closing driving means for opening / closing the opening / closing member;
Periodically so as to open the discharge port, farming equipment according to claim 3, wherein the further Yusuke Rukoto and control means for controlling the opening and closing drive means. The aquaculture facility according to any one of claims 1 to 4 , wherein the feeding device releases the fish for feeding at a plurality of release positions scattered in a wide range of the culture tank . The aquaculture facility according to any one of claims 1 to 3 , wherein the feeding device periodically releases feeding fish. Further comprising a flow down device for flowing down the aquaculture water,
The aquaculture tank is formed in a curved ring,
Falling device, farming equipment according to any one of claims 1-6, characterized in Rukoto passed down the aquaculture water to one circumferential direction of the aquaculture tanks. Farming equipment according to any one of claims 1 to 7, characterized in further including that the apparatus for removing the aquaculture water. The aquaculture facility according to any one of claims 1 to 8, wherein the cultivated juvenile fish is a tuna larvae, and the feed fish is a salmon larvae . A feeding device that releases a live feed fish smaller than the cultivated larvae to the culturing tank where the aquaculture water is stored and a plurality of cultivated larvae are cultivated,
A container main body in which a discharge port for containing the feed fish and discharging the feed fish is formed, and a feed container having an opening and closing member for opening and closing the discharge port;
An opening / closing driving means for opening / closing the opening / closing member;
A feeding device comprising: control means for controlling the opening / closing drive means so as to periodically open the discharge port .

Images