JP3998110B2 - Apparatus for suppressing movement function of fish and the like, and method for preserving live fish subjected to suppression processing - Google Patents

Description

【００２２】
次に、実施例１の処置装置を使用した電気処置の実施例およびこれらを保存する方法について説明する。
実施例２
本実施例２においては２５０グラムのマアジを電気処置した。尚、電圧７０ボルト、周波数１００Ｈｚで行った。
約６０秒間の通電をすることにより、マアジは僅かな鰓呼吸を除きほとんど動かなくなったので、これを処置台から取り上げ、水温３℃の冷温水槽に６０秒間入れた。この間、このマアジは仰向けで口を開けた状態で僅かな鰓呼吸を続けていた。冷温水槽からこのマアジを取り出し、水温１０℃の低温水槽に入れ、１０時間保存した。この間、マアジは上記した冷温水槽の中と同じ状態のままであった。
保存の後、このマアジを水温１６℃の中温水槽に移したが、移してすぐは状態が変わらなかったが、放置していると徐々に動き出し、約３０分後には通常の姿勢で元気良く泳ぎ出した。
これを刺身にして食してみたが、活魚特有の歯ごたえがあった。
【００２３】
実施例３
本実施例３では、４００グラムのイサキを前記実施例２と同様に電気処置と冷水処理を行い、１２時間低温水保存をした。各諸元は次の通りである。
電圧７０ボルト、周波数１００Ｈｚ、電気処置時間６０秒、冷水温度３℃、保存低温水温度１０℃
さらに、これを１６℃の中温水槽で復活させたが、約１０分で正常に泳ぎだし、その後の餌付けにおいても食欲が旺盛であった。
【００２４】
実施例４
本実施例４においては、頭足類であるコウイカについて同様の処置を行った。
まず、コウイカの場合、図３に示すように、電極を目６１と足６２の付け根との間の中間位置である側部位６０に当てた。本実施例で使用したコウイカ６は、４００グラムで、電圧７０ボルト、周波数５０Ｈｚの電気処置を６０秒間施した。開始直後、コウイカ６は足を電極に向けて伸ばしてきたが、徐々に動かなくなり、体色があせてきた。漏斗は正常に吹いていたので、呼吸するための鰓運動していることがわかった。足の動きが止まって、ほとんど動かなくなった時点で通電を止めた。
その後は、手で持っても足は動かないが、漏斗からの噴出しは起こった状態であり、呼吸を確認できた。これを魚と同様の５℃の冷水で１分間冷水処置し、その後１２℃の低温水槽で約２４時間保存した。保存している間の状態は、呼吸、排泄、漏斗が正常に動いており、生存期間への影響がないと思われる。また、狭い容器に入れても、他のイカをつかみ、かむことがなかったため、体か傷つくこともなかった。
保存後、刺身で食してみたがで、身は非常に透き通っており、食感・味ともに獲れたての状態と同じであった。
【００２５】
実施例５
本実施例では甲殻類十脚目であるイセエビについて処置を施した。活きの良いイセエビは、水槽から取り上げると激しく尾肢を伸縮して暴れる。
図４に示すように、イセエビ７の神経系統８は、胸部７２に胸部神経節８２があり、脚７３の運動を司り、尾肢７１には腹部神経節８１があり、尾肢７１の運動を司って泳ぐことができる。このようなイセエビ７に処置を施すにあたっては、尾肢７１の上部内側の両側部を処置部位７０と定めて電極を当てる。この部位７０はなるだけ皮の薄いところを選び、且つ胸部神経節８２に近い位置が効果的である。
本実施例では２００グラムのイセエビについて、電圧７０ボルト、周波数５０ヘルツの電荷を与えた。荷電すると尾肢７１をまるめて硬直していた。５〜１０秒程度で尾肢７が伸びてきたが、脚７３は動いたままであった。約６０秒で電極を離したが、脚７３が動いているだけで、暴れることはなかった。これを水温３℃の冷水に約１分間入れ、その後、水温１０℃の低温水槽で約２４時間保存した。保存している間は脚７３を使って動くものの、尾肢７１を動かして泳ぐことはなかった。
【００２６】
【発明の効果】
本発明では上記のように構成したので、魚類のみならず頭足類や甲殻類十脚目といった水中生物を捕獲した後に、産地から消費者のもとまで活きたまま運搬し、さらにそれを消費地で保存するにあたり、次に示す効果を得られる。
(1)運動機能を一時的に喪失しているため、狭い水槽でも大量の魚類等を収納して運搬および保存ができ、しかも餌の供給を必要とせず、酸素消費量および排泄物が少ないため、新鮮な状態に保つのに労力を要しない。
(2)運搬または保存の後に、獲れたての状態に復活させることが容易であり、食材目的に限らず、水族館などの観賞用の運搬などといった用途にも応用ができる。
(3)魚類に限らず、イカなどの頭足類や、エビなどの甲殻類といった多くの水中生物に適用できる。
【図面の簡単な説明】
【図１】実施例１の処置装置の構造を示す斜視図である。
【図２】電極を魚体に突き刺す際の位置を示す図である。
【図３】イカに対する処置方法を示す模式図である。
【図４】イセエビに対する処置方法を示す模式図である。
【符号の説明】
１・・・…魚体
１１・…鰓蓋
１２・…尾鰭側
２・・・…処置台
３・・・…収納箱
４・・・…低周波電流発生器
５１・…第１電極
５２・…第２電極
５２ａ…アーム部分
５２ｂ…先端部分
６・・・…コウイカ
６０・…側部位
６１・…目
６２・…足
７・・…イセエビ
７０・…処置部位
７１・…尾肢
７２・…胸部
７３・…脚
８・・・…神経系統
８１・…腹部神経節
８２・…胸部神経節[0001]
[Field of the Invention]
The present invention temporarily suppresses the motor functions of fresh fish such as fish, cephalopods, and crustaceans so that they do not move, and the survival maintenance functions such as respiration and circulatory organs are normal. Preserving the restrained live fish, etc. for the purpose of suppressing the movement function of live fish, etc. to be kept in a state, a treatment device for applying this restraint treatment to live fish, etc., and distribution from the production area to consumers It is about how to do.
[0002]
[Prior art]
In recent years, with the help of the gourmet boom, demand for live fish including squid and lobster has increased rapidly, and the means of transporting them from the production area to consumers has determined the commercial value of the live fish. become. As a method for transporting live fish and the like, a method using a vehicle or the like equipped with a ginger has been widely used. There are the following problems in transporting by ginger.
(1) A special vehicle with a large ginger that can swim live fish is necessary, which is expensive and the size of the ginger is limited. It will be restricted naturally.
(2) If a fish or the like that is swimming around is transported under a narrow ginger and subjected to vibration during transportation, the fish body may be damaged by the collision of the inner wall of the ginger or the fish and the product value may be reduced.
(3) In order to keep live fish in a lively state, it is necessary to feed appropriately, but it is not always easy for a carrier to feed properly like a farmer, and as a result, It can lead to the so-called “live life”. In addition, considering problems such as oxygen supplementation and excrement disposal, it is not easy to keep the ginger inside in a good condition during long-time transportation, etc. Absent.
[0003]
In view of this, the present applicant has shown a means for solving the problem of transportation by conventional ginger in Japanese Patent Application No. 10-298183. The main part of this means is to specify the position of the spinal cord of the live fish and puncture it to lose part of the motor function of the live fish so that it does not move for transportation.
Although this means is based on an unprecedented superior method, it can be applied only to fish having a spinal cord and cannot be applied to cephalopods, crustaceans and the like. Moreover, even if there is a case where it is desired to restore the live fish subjected to this treatment to a normal state, it is practically difficult.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention can be applied to craniopods such as squid and crustaceans such as shrimp, which are effects that cannot be achieved by the above-mentioned applicant's own application. it is an object to provide a suppression treatment apparatus and storage methods such as live fish with suppressed treatment of motor function, such as live fish that can be returned to a state.
[0005]
[Problems to be solved by the invention]
[Means for Solving the Problems]
In the present invention, when the nerve is paralyzed by passing an electric current through the nerve of a fish or the like and temporarily suppresses a part of the motor function of the fish or the like, two sites other than those close to the brain of the fish or the like In addition, an apparatus is configured in which a needle-like electrode with a sharp tip is brought into contact with the electrode to pass a current.
[0006]
That is, the suppression device for motor function of fish or the like is a suppression device for temporarily suppressing a part of motor function of fish or the like by paralyzing the nerve by applying an electric current to the nerve of fish or the like. A box-shaped storage box in which the low-frequency current generator is stored, a treatment table placed and fixed on the storage box, and two electrodes connected to the low-frequency current generator; Each electrode is formed in a needle-like shape with a pointed tip, and is protruded and attached to the upper surface of the treatment table so that the protruding length can be adjusted. At least one of the electrodes is substantially perpendicular to the horizontal arm portion and the arm portion. The arm portion includes a tip portion that rises, and an end portion of the arm portion opposite to the tip portion is pivotally supported so as to rotate horizontally on the treatment table.
[0007]
Furthermore, a part of the motor function such as fish is temporarily suppressed by bringing a needle-like electrode with a sharp tip into contact with two parts other than the immediate vicinity of the fish, etc. After confirming that it is slightly breathing, the charging of the current is stopped, and the fish is immersed in cold water that is at least 5 ° C. lower than the lower limit water temperature of the fish, etc. for a predetermined time. It is made to preserve | save in the low temperature water below the lower limit water temperature of this .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a suppression means that mainly causes a low-frequency pulse current to flow to a desired position of a body to be treated (fish body, etc.), and a treatment apparatus that performs this suppression treatment, in order to suppress a part of a motor function such as live fish. And a preservation method capable of maintaining a state where the live fish and the like subjected to the suppression treatment are suppressed and used for transportation and the like.
[0009]
First, as a suppression means, in order to prevent the brain function and the visceral function from being affected, for example, in fish, an electrode is arranged so that a low-frequency pulse current is applied to the fish body behind the medulla and the voltage depending on the fish species. And pulse frequency are set, and the electrode is applied to the fish and energized. Immediately upon energization, the body stiffens and the mouth and lid are left open. If energization is continued for about 5 to 10 seconds so as to maintain this state, the lid and mouth close while the body color gradually changes, but the dorsal and prone positions are standing Therefore, it can be seen that the stiffness continues. After confirming that the mouth and lid are closed and the lid is slightly opened and closed, remove the electrode. During this time, it takes about 10 to 60 seconds.
The above-mentioned electrical treatment temporarily prevents the fish from moving, and even if it is picked up by hand, it will not be violated, but the shark is slightly opened and closed, and it can be confirmed that it is breathing. This electrode may be a pad or the like, but if a needle-like electrode having a sharp tip that can be pierced into the skin of a fish body is used, there is an immediate effect.
[0010]
Next, an apparatus for performing the electrical treatment described above will be described.
The configuration of the specific device will be described in the following examples, but as its basic configuration, a treatment table on which a fish is placed for treatment, at least two electrodes with needle-like tips protruding from the treatment table, It comprises a pulse current device for supplying current to the electrode, and the electrode is provided so that the protruding length can be adjusted, at least one of which is provided so that the protruding position can be moved.
In this way, the position and length of the electrode are adjusted according to the type and shape of the object to be treated, and the body is stabbed into the body at the most appropriate position and with the most effective depth, so that it does not move immediately. .
[0011]
Furthermore, in order to properly preserve the fish and the like in this state so that they can be transported for a long time, they are put in a cold water tank and paralyzed by cold water to make it difficult to recover. Although the water temperature varies depending on the type, it is preferably about 5 to 10 ° C. lower than the lower limit of the survival temperature. The time of exposure to this cold water is preferably about 1 to 5 minutes, and during that time, if it is a fish, the lid is slightly opened and closed with the belly up, so there is no obstacle to the sudden life support function due to cold water. I can confirm that. If this time is too long, it will die, and if it is too short, this cold water effect cannot be obtained.
[0012]
The body exposed to the cold water is taken out once and replaced with a low-temperature hot water tank having a temperature lower than the lower limit of survival temperature prepared in another water tank but close to this. Preserving live fish, etc. under this low water temperature, keeps breathing while keeping the stomach in the state of stomach, but does not swim around, and does not need to feed, and there is almost no excrement, and transport The inside of the aquarium can be kept clean. Also, since there is no exercise, the amount of oxygen intake is small.
[0013]
Moreover, since it does not swim around, there is no need for a vehicle with a large ginger as in the prior art, and it is only necessary to attach the oxygen supply device to a heat-insulating container that is large enough to contain the treated item. Therefore, it is also possible to put low-temperature seawater into a polystyrene foam container, attach a battery-type oxygen supply device to this, seal it with the above treatment, and send it directly to homes etc. by home delivery It is.
[0014]
In order to restore this fish to its original state after transportation, etc., it is only necessary to put it in an aquarium with a suitable survival temperature. Immediately after moving from the low water temperature tank, it lies at the bottom of the water tank, but after a few minutes it began to move, and after about an hour it began to swim normally and recovered its motor function. As a result, it can also be used as a display at a restaurant.
[0015]
【Example】
Next, each embodiment will be described with reference to the drawings.
FIG. 1 is a perspective view showing the structure of a treatment apparatus according to the first embodiment, FIG. 2 is a view showing a position when an electrode is inserted into a fish body, FIG. 3 is a schematic view showing a treatment method for squid, and FIG. 4 is a treatment method for lobster. It is a schematic diagram which shows.
[0016]
Example 1
In the first embodiment, for the sake of convenience, an example of a treatment apparatus used when the suppression method of the present invention is applied to live fish will be described.
As shown in FIG. 1, the treatment apparatus of the present embodiment includes a box-shaped storage box 3 in which a low-frequency current generator 4 is stored, and a treatment table 2 mounted and fixed thereon. The first electrode 51 and the second electrode 52 connected to the low-frequency current generator 4, each electrode has a pointed needle-like shape and is attached to protrude from the upper surface of the treatment table 2, The protruding length is provided to be adjustable.
[0017]
The horizontal position of the first electrode 51 cannot be moved only by the vertical adjustment. On the other hand, the second electrode 52 is composed of a horizontal arm portion 52a and a tip portion 52b rising vertically from the arm portion 52a. The arm portion 52a rotates on the treatment table 2 in the horizontal direction so that the tip portion 52b is in its horizontal position. It is provided so that can be changed. Therefore, the position of each electrode can be moved to match the shape of the fish body to be treated.
[0018]
In order to treat fish with this treatment apparatus, first, the treatment table 2 is opened, the low-frequency current generator 4 is activated in advance, and treatment is performed with an adjusting instrument (not shown) provided on the back side of the treatment table 2. After adjusting the position of each electrode according to the fish body, the treatment table 2 is closed to complete the preparation.
[0019]
Next, the fish body is taken out from the ginger, and as shown in FIG. 2, the fish body 1 has the caudal fin side 12 pierced by the first electrode 51, and the rear side slightly beyond the shark lid 11 pierced by the tip portion 52 b of the second electrode 52. Press 1 in. As soon as the fish body 1 touches both electrodes, the fish body starts convulsions, and it is only necessary to release the hand and wait until the fish body 1 is in the desired state.
[0020]
The setting of the low frequency current varies depending on the type and size of the fish, but it is better to refer to the table below.
[Table 1]

[0022]
Next, an example of electrical treatment using the treatment apparatus of Example 1 and a method for storing them will be described.
Example 2
In Example 2, 250 grams of horse mackerel was electrotreated. The voltage was 70 volts and the frequency was 100 Hz.
By applying electricity for about 60 seconds, the horse mackerel almost did not move except for a few sputum breathing, so this was taken from the treatment table and placed in a cold / hot water bath with a water temperature of 3 ° C. for 60 seconds. During this time, the horse mackerel continued to breathe slightly with her mouth open on her back. The horse mackerel was taken out from the cold / hot water tank, placed in a low temperature water tank having a water temperature of 10 ° C., and stored for 10 hours. During this time, the horse mackerel remained in the same state as in the cold / hot water tank described above.
After storage, this mackerel was transferred to a medium-temperature water tank at a water temperature of 16 ° C. The condition did not change immediately after the transfer, but it gradually began to move if left unattended, and after about 30 minutes, it swimed well in a normal posture. I put it out.
I tried eating this with sashimi, but there was a crunch unique to live fish.
[0023]
Example 3
In Example 3, 400 grams of Isaki were subjected to electrical treatment and cold water treatment in the same manner as in Example 2 and stored in low-temperature water for 12 hours. Each specification is as follows.
Voltage 70 volts, frequency 100 Hz, electrical treatment time 60 seconds, cold water temperature 3 ° C, storage low temperature water temperature 10 ° C
Furthermore, this was revived in a medium-temperature water bath at 16 ° C., but it started to swim normally in about 10 minutes, and appetite was strong in the subsequent feeding.
[0024]
Example 4
In Example 4, the same treatment was performed for cuttlefish that are cephalopods.
First, in the case of cuttlefish, as shown in FIG. 3, the electrode was applied to the side portion 60 that is an intermediate position between the eye 61 and the base of the foot 62. The cuttlefish 6 used in this example was 400 grams, and was subjected to electrical treatment for 60 seconds with a voltage of 70 volts and a frequency of 50 Hz. Immediately after the start, the cuttlefish 6 had their legs stretched toward the electrodes, but gradually stopped moving and faded. The funnel was blowing normally, so I found out that it was exercising for breathing. When the movement of the foot stopped and almost stopped moving, the power supply was stopped.
After that, the legs did not move even if they were held by hand, but the eruption from the funnel had occurred and we were able to confirm breathing. This was treated with cold water at 5 ° C. for 1 minute in the same manner as fish, and then stored in a low-temperature water bath at 12 ° C. for about 24 hours. During storage, breathing, excretion, and funnel are operating normally and do not appear to affect survival. Moreover, even if it was put in a narrow container, it did not bite other squids and did not bite, so the body was not damaged.
After storage, I tried eating with sashimi, but the body was very clear and the texture and taste were the same as it was freshly picked.
[0025]
Example 5
In this example, treatment was made for lobster, which is a crustacean decapod. The vivid lobster, when taken out of the aquarium, violently expands and contracts its limbs.
As shown in FIG. 4, the nervous system 8 of the lobster 7 has a thoracic ganglion 82 in the chest 72 and manages the movement of the leg 73, the abdominal ganglion 81 has the abdominal ganglion 81, and exercises the caudal limb 71. You can swim. In performing treatment on such lobsters 7, both side portions inside the upper portion of the tail limb 71 are determined as treatment sites 70 and electrodes are applied. The site 70 is selected as thin as possible, and the position close to the thoracic ganglion 82 is effective.
In this example, 200 grams of lobster was charged with a voltage of 70 volts and a frequency of 50 hertz. When charged, the tail limb 71 was rounded and stiff. The caudal limb 7 grew in about 5 to 10 seconds, but the leg 73 remained moving. The electrode was released in about 60 seconds, but the leg 73 was only moving and there was no violence. This was put in cold water having a water temperature of 3 ° C. for about 1 minute, and then stored in a low-temperature water tank having a water temperature of 10 ° C. for about 24 hours. While it was preserved, it moved using the legs 73, but it did not swim by moving the tail 71.
[0026]
【The invention's effect】
Since the present invention is configured as described above, after capturing not only fish but also aquatic organisms such as cephalopods and crustaceans, they are transported alive from the production area to the consumer and further consumed. The following effects can be obtained when storing on the ground.
(1) Because the motor function is temporarily lost, a large amount of fish can be stored and transported and stored even in a narrow aquarium, and it does not require the supply of food, and oxygen consumption and excrement are low. , No effort is required to keep it fresh.
(2) It is easy to restore to a freshly picked state after transportation or storage, and it can be applied not only to the purpose of food but also to transportation such as ornamental use in an aquarium.
(3) Not limited to fish, it can be applied to many aquatic organisms such as cephalopods such as squid and crustaceans such as shrimp.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a structure of a treatment apparatus according to a first embodiment.
FIG. 2 is a diagram showing a position when an electrode is pierced into a fish body.
FIG. 3 is a schematic diagram showing a treatment method for squid.
FIG. 4 is a schematic diagram showing a treatment method for lobster.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ...... Fish body 11 ... Spider lid 12 ... Caudal fin side 2 ... Treatment table 3 ... Storage box 4 ... Low frequency current generator 51 ... First electrode 52 ... First 2 electrode 52a ... arm part 52b ... tip part 6 ... cuttlefish 60 ... side part 61 ... eye 62 ... leg 7 ... shrimp 70 ... treatment part 71 ... tail leg 72 ... chest 73 ... ... Leg 8 ... Nervous system 81 ... Abdominal ganglion 82 ... Thoracic ganglion

Claims (3)

A suppressive treatment apparatus that paralyzes a nerve by applying an electric current to a nerve of a fish or the like and temporarily suppresses a part of a motor function of the fish or the like, and a box containing a low-frequency current generator inside A storage box, a treatment table placed and fixed on the storage box, and two electrodes connected to the low-frequency current generator, each electrode having a pointed needle shape Formed on the upper surface of the treatment table so as to adjust the protruding length, and at least one of the electrodes comprises a horizontal arm portion and a tip portion rising substantially vertically from the arm portion. is pivotally supported end of the tip section and the opposite side, suppressing treatment device motor function in fish such as that characterized by providing for rotation over the treatment table in the horizontal direction. A part of motor function such as fish is temporarily suppressed by bringing a needle-like electrode with a pointed tip into contact with two parts other than the brain nearest to the fish, etc., and a current is passed. After confirming that it is breathing, the charging of the current is stopped, immersed in cold water at least 5 ° C. lower than the lower limit survival temperature of the fish, etc. for a predetermined time, and after being immersed in the cold water, the lower limit of survival of the fish, etc. A method for preserving fish or the like that has been subjected to suppression of motor function, characterized by preserving in low-temperature water below the water temperature. The method for preserving fish and the like that have been subjected to a suppression process of motor function according to claim 2 , wherein the time for immersion in cold water is 1 to 5 minutes.

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