JPS619232A - Method and apparatus for breeding fishes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a method for cultivating fish that makes it possible to carry out circular moving aquaculture, and an apparatus therefor.

Conventional technology Traditionally, fish farming was carried out in a single tank from fry to adult fish, or the fish were moved to a tank with a larger water surface and volume as they grew. .

However, when carrying out consistent aquaculture in all tanks in one tank, the number of fry that are assumed to be in the adult state in one tank is only ¥ IW.
J is not possible, and increasing the amount of aquaculture requires a large number of aquariums.
There was a lot of waste during the growth process, and efficiency was poor.

In addition, changing the aquarium and moving the fish as they grow requires a lot of effort in fish farming, and this work can cause scratches and other injuries to the farmed fish, reducing the product value and costing the work. There was an inconvenience that it took a while.

C1 Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned points, and includes a method for cultivating fish that enables circular mobile aquaculture, which reduces fish farming work and enables efficient aquaculture. The purpose of this invention is to provide a device for this purpose.

21 Means for Solving the Problems The fish farming method according to the present invention which solves the above-mentioned problems has an inner and an outer aquarium in the shape of concentric circles, which are arranged between the central pillar foundation and the tank frame in the inner aquarium. Fish from fry to adult fish can be separated by a fixed netted partition and a movable netted partition provided, as well as by a plurality of movable netted partitions movably supported on the tank frame around the central column in the outer aquarium. The number of divisions into which the period is divided into equal parts forms compartments with tank water areas according to growth, and movable mesh partitions are installed in each compartment according to growth, from the juvenile compartment to the compartment corresponding to the next growth period, and then to the adult compartment. The system is characterized in that cultured fish are moved by moving them to corresponding positions in the compartments, and new fry are supplied to the vacant juvenile compartments after the adult fish have been driven out, thereby performing circular mobile aquaculture.

The fish culturing device according to the present invention for carrying out the above fish culturing method consists of an inner and an outer aquarium each having a concentric shape, and the inner aquarium has a fixed mesh partition between a central support foundation and a tank frame, and supports and an outer aquarium. A movable mesh partition supported by the tank frame is installed to form a compartment with a water surface area corresponding to the juvenile fish compartment and the next growth organ, and the outer tank is supported by the tank frame around a central column. A plurality of movable mesh partitions are provided to form a plurality of compartments having a tank water surface area that changes sequentially during the growth period, and the tank frame of the inner tank is provided with fixed mesh partitions on both sides. The tank frame of the outer aquarium is provided with a drive-in port to the compartment of the outer aquarium, and the tank frame of the outer tank is provided with a drive-out port to the shipping compartment for adult fish, thereby making it possible to carry out circular mobile aquaculture.

According to the above-described method and apparatus for cultivating fish according to the present invention, first, the adult fish in the adult fish compartment in the outer aquarium are opened at the outlet leading to the shipping compartment, and then one of the movable mesh partitions forming the adult fish compartment is expelled. The farmed fish are moved to the adult fish compartment by moving them toward the other movable netting partition near the mouth and expelling them, and moving the movable meshing partition behind the one movable netting partition to the formation position of the adult fish compartment. . The cultivated fish in each growth compartment are sequentially moved to the next growth compartment with an increased tank water surface area by moving the movable mesh partition. Then, in the vacant section formed by the partition between the other movable netting partition and the one netting partition, the cultivated fish from the inner aquarium are expelled from the expulsion port by movement of the movable netting partition.

The movable netted partition of this inner aquarium is moved back to form a juvenile compartment with the fixed netted partition, and the compartment that was previously the juvenile compartment has its water surface area increased to form the next growth compartment. . Then, on the same day as the shipment of the growth compartment, the same number of meters of fry as the number of cultured fish in each compartment can be placed in the fry compartment, and cultivation can be started. This kind of circular mobile aquaculture makes aquaculture work simple and enables efficient aquaculture.

EXAMPLE Hereinafter, an example of the present invention will be explained with reference to the drawings. FIG. 1 is a schematic diagram of a fish culturing apparatus that best represents the features of the present invention, and is composed of an outer aquarium B and an inner aquarium in the shape of concentric circles.

In the inner water mA, a first compartment 1 and a second compartment 2 are formed as fry compartments, and in the outer tank B, a third compartment 3, a fourth compartment 4, and a fifth compartment corner 5 as a growth compartment are formed. There is. These sections divide the growth period into equal parts as shown in Table 1, which adopts a growth example of tilapia culture, and the tank water surface area is divided into each growth period I! according to the number of divisions. This was determined by considering the size of Il fish culture.

Each compartment 1 and 2 in the inner tank A has an inner tank frame 16
A fixed mesh partition 7 provided between the and the pillar foundation 14
and a movable mesh partition 8 attached (pulled) to a support beam 8' that can be moved while being supported by a support column 15. 8 to the position 8'.The inner tank frame 16 is provided with inlet ports 12 on both sides of the fixed mesh partition 7 to allow the aquaculture in the second compartment 2. For fish, open the entry port 12 and move the movable netting partition 8 to the entry port 1.
By simply moving up to 2, you can drive the fish to the third section 3. Then, return the movable mesh partition 8 and
If it is fixed at the position ', a new first section 1' with the same tank water surface area as the previous first section 1 will be formed, and the previous first section 1 will become a second section 2 with an increased tank water surface area. '.

Next, in the outer water tank B, as shown in FIGS. 2 and 3, one end is rotatably supported by the center support 15, and the other end and the middle part are moved on the tank frames 16 and 17 by wheels 18. Possibly supported movable piers 9', 10', 11
' are provided, and each movable crosspiece m9', 10', 11
'A mesh partition 9°10.11 is installed. The third section 3 is formed by the first movable mesh partition 9 and the second movable mesh partition 10, and the fourth section 4 is formed by the second movable mesh partition 10 and the third movable mesh partition 11. A fifth section 5 is formed by the third movable mesh partition 11 and the first movable mesh partition 9. A discharge port 13 is provided in the tank frame 17 between the fifth compartments, and connects the outer tank frame 17 and the separately provided shipping compartment 6.

The first movable mesh partition 9 is installed so that the inlet 12 of the inner tank frame 16 and the outlet 13 of the outer tank 17 are located on opposite sides, and separates the third section 3 and the fifth section 5. is forming. Adult fish that have finished culturing in the fifth compartment 5 can be moved to the shipping compartment 6 by opening the ejection port 13 and moving the third movable netting partition 11 close to the first movable netting partition 11. I can do it. By sequentially moving each movable mesh partition 9, 10, 11 as shown by the dotted arrows in FIG. 1, a section with an increased tank water area of the next growth section is formed. The distance between the tank bottom surface 19 and the upper water surface 20 is approximately 1 m, and the water depth is equal. Also, outside water mB
Movable piers 9', 10' with movable mesh partitions 9°10, 1111.

11' can be effectively used for feeding, other tasks, and management tasks. All the partitions are lined with netting, and the aquarium is internally shaped. Depending on the type of fish being cultivated, the water in the tank may need to flow, but it can flow in a circular manner with little resistance.

Next, circular moving aquaculture in the fish aquaculture apparatus configured as above will be explained. In this case, the number of fish cultured in one section shall be the same in each section, from fry to adult fish, and the water surface area will be determined based on the final growth weight ratio and other conditions after culturing for an equal period in each section. The number of adult fish compartments can be adjusted using movable net partitions, starting with 5 adult fish compartments. .

For an equal period of time in each section 1, 2, 3, 4, and 5, for 2 months in the case of tilapia farming, when the cultivation period is completed, the work of moving the cultured fish to the next section is performed in the following order.

(1) The adult fish in the fifth compartment 5 open the ejection port 13 leading to the shipping compartment 6, and then open the third movable mesh partition 11 at the rear of the fifth compartment 5 in the clockwise direction of the circular outer tank A. By moving the first movable mesh partition 9 to the front position, it is moved to the shipping section 6, and the fifth section 5 becomes an empty section.

(2) The cultured fish in the fourth compartment 4 are driven into the fifth compartment 5 by moving the second movable netting partition at the rear to the rear position of the fifth compartment 5.

Therefore, the fifth section 5 is the third movable mesh partition 11
and a second movable mesh partition.

(3) Similarly to the cultured fish in the fourth compartment 4, the farmed fish in the third compartment 3 can be grown by simply rotating the second movable netting partition 10 and the first movable netting partition 9 to the fourth compartment 4. will be moved. ) (4) When the third movable mesh partition 11 at the rear of the fifth section is moved to the fixed position at the rear of the third section 3, the second
The cultured fish in section 2 are stored in the inner tank frame 1 which leads to the third section 3.
6 is opened, and the rear movable mesh partition 8 of the second partition 2 is moved toward the front fixed mesh partition 7 to be driven into the third partition 3.

(5) When the movable mesh partition 8 that formed the second section 2 is returned to the dotted line position 8', the second section 2 becomes the first section 1', and the first section 1 becomes the second section 2'. This will result in an empty section. On the same day as the shipment of the fifth section 5, the same number of fish fry as in each section are placed in the new first section 1' which is an empty section, and culture can be started.

Of the inlet ports 12 provided in the tank frame 16 of the inner aquarium A, the inlet ports 12 that were not used in step (8) are used to transfer the cultured fish in the second section 2' to the third section during the next chain movement. Used to drive into section 3.

In addition, when it is the first time to carry out circular aquaculture, the above steps are performed in the reverse order up to the adult fish section of the fifth section 5.

Cyclic mobile aquaculture (I) in the above-mentioned fish aquaculture equipment
Table 2 shows a comparison of the conventional tilapia farming in which all members of a tank are cultured (n) from fry to adults.
It is clear that significant improvements can be made.

In addition, as shown in FIGS. 2 and 3, a shed 21 supported by extending the central support 15 may be provided so as to cover the water tank within the width of the outer wall line 22.

(9) Effects of the Invention As described above, the circular mobile aquaculture and the device therefor made possible by the present invention enable efficient aquaculture, reduce the labor involved in aquaculture work, and significantly improve economic effects. The excellent effect of being able to do this can be obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of an embodiment of the present invention, FIG. 2 is a sectional view of a fish culturing apparatus according to the present invention, and FIG. 3 is a plan view of the fish difference 1M apparatus shown in FIG. A...Inner tank, B...Outer tank, 1...First compartment which is a fry compartment, 2...Second compartment, 3...Third compartment, 4...Fourth compartment, 5... Fifth section which is an adult fish section, 6... Shipping section, 7... Fixed mesh partition, 8... Movable mesh partition, 9... First movable mesh partition, 10 ...Second movable mesh partition, 11...Third movable mesh partition, 12...Drive-in port, 13...Drive-out port, 14...Column foundation, 15...Center column, 16...Inner tank frame, 17...Outer tank frame.

Claims (1)

[Scope of Claims] 1) The inner and outer aquariums each having a concentric circle shape are divided by a fixed mesh partition and a movable mesh partition provided between the central pillar foundation and the tank frame in the inner aquarium. ,
By partitioning the outer aquarium with multiple mesh partitions that are movably supported on the tank frame around the central column, the period from fry to adult fish is divided equally, and the water surface area is adjusted to the size of the fish as they grow. The cultured fish are moved by forming compartments and moving movable mesh partitions to corresponding positions in each compartment according to the growth of the fish, from the juvenile compartment to the compartment corresponding to the next growth period to the adult compartment, and the adult fish are expelled. A method for cultivating fish characterized by replenishing empty fry compartments with new fry and carrying out circular movement aquaculture. 2) Consisting of an inner and outer aquarium in the shape of concentric circles for fish cultivation, the inner aquarium has a fixed mesh partition between the center pillar foundation and the tank frame, and is movable while being supported by the pillars and the tank frame. A movable netting partition is provided to form a compartment for young fish and a compartment having a tank water surface area corresponding to the next growth period. A plurality of partitions are provided to sequentially form a plurality of compartments having tank water surface areas corresponding to the growth period, and the tank frame of the inner tank is provided with inlet ports to the outer tank compartments on both sides of the fixed mesh partition. A fish culturing device characterized in that a tank frame of an outer aquarium is provided with an outlet for ejecting adult fish to a shipping section, thereby making it possible to carry out circular mobile aquaculture.