阅读说明：本技术 头足纲用投饵装置、投饵方法以及头足纲 (Feeding device for cephalopoda, feeding method and cephalopoda ) 是由 森岛辉 于 2019-02-15 设计创作，主要内容包括：本发明的头足纲用投饵装置包括具有凹部的外壳和配置于所述凹部的饲料。(The feeding device for cephalopods of the present invention includes a housing having a recess and a feed disposed in the recess.)

1. A feeding device for cephalopods includes a housing having a recess and feed disposed in the recess.

2. The feeding device according to claim 1, wherein the housing is shaped to be held by tentacles of the cephalopoda line.

3. The feeding device according to claim 1 or 2, wherein the outer shell has a strength capable of withstanding the pressure of tentacles of the cephalopoda line.

4. A feeding device according to any one of claims 1 to 3, wherein the feed is an adhesive feed.

5. A feeding method of cephalopoda using the feeding device according to any one of claims 1 to 4.

6. A cephalopodium grown by the feeding method according to claim 5.

Technical Field

The present invention relates to a feeding device for cephalopoda, a feeding method using the feeding device for cephalopoda, and cephalopoda cultivated by the feeding method.

Background

In recent years, consumers' interest in palatability and resource conservation has increased, and development of breeding techniques is also desired for cephalopoda.

For example, patent document 1 discloses a booth for octopus rearing and a culture system for octopus. Further, non-patent document 1 discloses observation of octopus rearing.

On the other hand, in the cultivation of cephalopods, a more preferable feeding method is important, but the findings on the feeding method of cephalopods have not been sufficient so far.

Disclosure of Invention

Problems to be solved by the invention

As described above, there is no sufficient finding as to what feeding method is preferable for providing more feed in cephalopods and what feeding method can improve the meat quality of the cultivated cephalopods while maintaining an appropriate breeding environment when the cephalopods are cultivated for food and other uses.

In order to solve the above problems, it is an object of the present invention to provide a feeding device for cephalopoda capable of satisfactorily feeding cephalopoda, a feeding method using the feeding device for cephalopoda, and cephalopoda cultivated by the feeding method.

Means for solving the problems

The present invention is as follows.

[1] A feeding device for cephalopods includes a housing having a recess and feed disposed in the recess.

[2] The feeding device according to [1], wherein the housing is in a shape capable of being held by tentacles of the cephalopoda line.

[3] The feeding device according to [1] or [2], wherein the casing is a casing having a strength capable of withstanding a pressure of a tentacle of the cephalopoda line.

[4] The feeding device according to any one of [1] to [3], wherein the feed is an adhesive feed.

[5] A feeding method of cephalopoda using any one of the feeding devices of the above [1] to [4 ].

[6] A cephalopoda line cultivated by the feeding method of the above [5 ].

Effects of the invention

According to the present invention, it is possible to provide a feeding device and a feeding method for cephalopoda capable of feeding more feed and preventing deterioration of feeding environment and feeding cephalopoda favorably, and it is also possible to provide cephalopoda which is favorably fed and has improved meat quality.

Drawings

Fig. 1 (a) to 1 (G) are schematic views showing a bait casting device.

Detailed Description

In the present specification, the term "step" includes not only an independent step but also a term included in the term as long as the intended purpose of the step is achieved when the term cannot be clearly distinguished from other steps.

In the present specification, the numerical range represented by "to" represents a range in which the numerical values recited before and after the range are included as the minimum value and the maximum value, respectively.

In the present specification, the amount of each component in the mixture means the total amount of a plurality of substances present in the mixture unless otherwise specified, when a plurality of substances corresponding to each component are present in the mixture.

In the present specification, the term "below" or "less than" as a percentage means 0% or includes the case of "not including" or a range including a value that is not detectable by the present means, unless the lower limit value is specifically described.

Hereinafter, a bait feeding device and a bait feeding method according to one embodiment of the present invention will be described.

A feeding device (feeding device for cephalopods) according to one embodiment of the present invention is used for raising cephalopods. The bait feeding device may be installed in a gutter for feeding the cephalopods, or may be installed outside the gutter for feeding the cephalopods if the cephalopods are within a range where the tentacles can be extended to take the baits.

The "tentacles" of the cephalopoda described in the present embodiment refer to projections generated from the head of the cephalopoda. The cephalopoda of Octopus including Octopus has 8 tentacles, and the cephalopoda of Decarpus including cuttlefish has 10 tentacles. The long 2 of the 10 tentacles of the cephalopoda order of the ten-wrist order are sometimes called the tentacles for baits for feed.

The cephalopoda can be bred by a method suitable for breeding according to the kind of cephalopoda. The cephalopods can be raised either in a land-based basin or in a sea cage. When the feed is raised in a land-based water tank, the ingestion of the fed feed can be easily observed. The raising of the cephalopods can raise a plurality of individuals in the water tank or the net cage at the same time, and can also raise each individual in the water tank or the net cage independently.

In the above-described feeding environment, the bait casting device according to the present embodiment may be installed temporarily at the time of casting, or may be installed permanently while appropriately replacing the feed disposed in the bait casting device.

Further, as the installation method of the bait casting device, the device may be left standing in a predetermined installation place such as in a sink, or may be movable if the cephalopodium line is so extended that the tentacle can be extended to shoot the bait, and may be suspended from the upper part, for example.

Fig. 1 (a) to 1 (G) show 7 kinds of feeding devices 11 to 17. Hereinafter, a description will be given of bait casting devices 12 to 17 as modified examples, taking as an example the bait casting device 11 shown in fig. 1 (a). The feeding device 11 includes a housing 1 having a recess 1a and a feed 2 provided in the recess. The material of the casing 1 may be any material as long as it does not obstruct the feeding of the cephalopoda. As a material of the housing 1, artificial materials exemplified by metal, ceramics, synthetic resin, wood, rubber, paper, leather, glass, and ceramic tile, and natural materials exemplified by stone, shells, and bones may be used. When the housing 1 has a strength capable of withstanding the pressure of tentacles of the cephalopods, the housing 1 does not collapse, the scattering of the feed placed in the concave portion is reduced, and deterioration of water quality can be prevented, thereby maintaining an appropriate breeding environment.

The housing 1 of the bait casting device 11 has a cup shape with a recess 1a at the center. However, the shape of the housing 1 of the feeding device 11 may be any shape as long as it can feed the cephalopoda. In addition to being substantially spherical, substantially columnar, substantially hammer-shaped, substantially polyhedral, it may be shaped similarly to the creatures predatory in the cephalopoda. Examples of the organisms prey on in cephalopoda include small fish, crustacean, shellfish, soldier crab, and clam worm. The shape of the housing 1 of the feeding device 11 may be a shape that can be gripped by a tentacle of the cephalopoda line. If the shape of the housing 1 of the feeding device 11 is a shape that can be gripped by the tentacles of the cephalopods, more bait can be fed to the cephalopods having a habit of drawing the bait close to the mouth to take the bait.

The size of the housing 1 of the bait casting device 11 is not particularly limited as long as the cephalopoda line can be extended out to reach the tentacle to shoot the bait, and for example, when the cephalopoda line has a total length of 30cm, the outer diameter can be set to about 1cm to 7 cm. By setting the size of the housing 1 of the feeding device 11 to the above-described extent, the cephalopoda can be easily held by the tentacles, and therefore, the feeding of the cephalopoda can be promoted.

The recess 1a of the housing 1 of the feeding device 11 may have any shape as long as the feed can be disposed inside the recess 1 a. The recess 1a of the housing 1 of the bait casting device 11 may be formed in a substantially tubular shape penetrating the housing 1, in addition to a substantially hemispherical shape, a substantially groove shape, or a substantially hammer shape. The recess provided in the natural material such as stone, shell, or bone may be used as it is as the housing of the feeding device 11. In order to hold the feed placed inside the recess 1a, the recess 1a of the housing 1 may be formed to wrap at least half of the volume of the feed, or may be formed to wrap a part of the feed so as to be fixed to the housing.

The feed 2 is disposed inside the recess outer edge 3, i.e., inside the recess 1a of the housing 1. The feed 2 may be disposed arbitrarily as long as it is held inside the recess 1 a. A part of the feed 2 may be directly coupled to the housing 1, or may be disposed so as to be physically covered by the recess of the housing 1 even in a state of not being coupled to the housing 1, and thereby held. If a part of the feed 2 is attached to the housing, the feed 2 is easily held by the housing 1 even if there is a water flow caused by the action of the cephalopoda, the action of bubbles, or the like. By using a substance adhering to the casing in a part of the feed 2, an adhesive feed can be produced. The adhesive feed according to the present embodiment is a feed that can adhere to the inside of the recess of the housing 1 and retain its shape. The adhesive feed can have a viscosity of, for example, 10 to 100 Pa. The adhesive feed can be formed as a feed having properties that retain the original properties when exposed to a water flow having a flow rate of 0.1, 1, 5, 10, or 15 cm/s. In addition, the adhesive feed can be formed as a feed that easily disintegrates in water. The disintegration can be judged by the degree of fragmentation to the extent that the shape of the bait cannot be recognized. The easily disintegrable feed is, for example, a feed having disintegrability to the extent that the feed disintegrates in about 15 minutes when left standing in water and disintegrates immediately when the cephalopoda grasps the feed. As the substance to be attached to the casing 1, a protein exemplified by collagen, a polysaccharide exemplified by fucoidan and carrageenan, a phospholipid exemplified by an egg membrane, a glycoprotein, and a glycolipid can be used. The feed containing protein can promote the growth of cephalopoda.

In addition, the surface shape of the housing 1 may be changed so that the feed 2 is easily attached to the housing 1 (particularly, the inside of the recess). Examples of the surface shape include providing fine irregularities on the surface of the housing 1 (the surface inside the recess), providing a plurality of fine grooves, and the like. The size of the irregularities or the like provided on the surface of the housing 1 may be changed according to the characteristics of the feed 2.

The surface of the housing 1 to which the feed 2 is not attached may be modified in shape so that the cephalopoda can be easily held by tentacles. Examples of the surface shape modification include providing fine irregularities on the surface of the housing 1 (the surface inside the recess), providing a plurality of fine grooves, and the like. The size of the irregularities or the like provided on the surface of the housing 1 may be changed according to the type of the cephalopoda and the characteristics thereof.

As the feed 2, any feed can be used as long as it can be prey to cephalopoda. The feed can be prepared from 1 or more than 2 kinds of feed raw materials. As the feed material, fishes exemplified by horse mackerel, mackerel and sardine, shellfishes exemplified by clam, clam shell and turban shell, crustaceans exemplified by shrimp, crab and krill, and grains exemplified by soybean, corn, rice and wheat can be used.

As the feed 2, a compound feed can be used. The compound feed may be prepared by grinding fish, shellfish, crustacean, grain, etc. When a mixed feed is used as a feed, it is easy to add a component for promoting the growth of cephalopoda and to flexibly cope with the price fluctuation of feed materials. Examples of the component for promoting the growth of cephalopoda include vitamins, minerals, hormones, preventive agents, therapeutic agents, sedatives, and vaccines.

When feeding the cephalopoda using the feeding device 11, the feeding device 11 is disposed at a position where the cephalopoda can be fed using a tentacle in a state where the fodder 2 is attached to the inside of the concave portion provided in the housing 1. The cephalopoda, when showing interest in the feed, will stick out of the tentacles to ingest feed 2. By setting the feeding device 11 to which the feed 2 is attached in advance in a state in which the cephalopoda is easy to take the bait, the taking of the cephalopoda can be promoted. As described above, according to the bait feeding device and the bait feeding method according to the present embodiment, more feed can be continuously supplied to the cephalopoda. Further, according to the feeding device and the feeding method of the present embodiment, since the feeding of the cephalopoda is promoted, the feed can be prevented from remaining in the rearing environment, and thus the deterioration of the rearing environment can be prevented. In addition, the feeding environment of cephalopoda cultivated by the above feeding method is good, and the nutritional state of cephalopoda is improved by promoting the feeding of cephalopoda. As a result, the damage to the tentacles and the body surface of the cephalopoda class is reduced, and the meat quality of the cephalopoda class can be improved to enhance the taste/umami for eating. Further, the risk of infectious diseases can be reduced by reducing the damage to the tentacles or the body surface.

The timing of feeding cephalopoda may be any timing as long as it is a timing at which a protein-containing feed can be taken after the onset. By performing bait casting using the bait casting device described in this embodiment, the bait casting performance can be improved at the time when bait casting is performed so that the tentacles hold the feed. By setting the amount of feed to be fed to the cephalopoda by 10% or more, 20% or more, 30% or more, or 50% or more using the feeding device described in the present embodiment, high feeding performance can be maintained. By using the feeding device described in the present embodiment, it is possible to feed for 1 month or more, 2 months or more, or 3 months or more, and to grow cephalopods having good meat quality while maintaining high growth performance. In addition, by feeding the feed using the feeding device described in the present embodiment, it is possible to make the cephalopoda learn that the substance present in the feeding device is the feed, thereby accelerating the feeding of the feed.

The timing of feeding the cephalopoda line may be any timing as long as the cephalopoda line can take the bait. When the bait is fed in a cycle of 24 hours, the intrinsic biological clock of cephalopoda and the cycle of digestive absorption are linked to reduce stress reaction and promote growth. When raising cephalopods, the light and dark cycle is linked with the timing of bait feeding when the light and dark cycle is given, so that the biological clock of cephalopods and the cycle of digestive absorption synchronized with the light and dark cycle can be linked, stress reaction can be reduced, and growth can be promoted. The feeding of the cephalopoda can be performed by planned feeding in which a predetermined amount is provided, or the feeding can be performed by satiating feeding in which the feeding amount is observed while feeding and the feeding is continued during the period of continuing the feeding.

The cephalopods raised by the feeding device of the present invention can be used for food applications including raw foods, processed foods, frozen foods, refrigerated foods, and dried foods, food materials, feed applications, ornamental applications, and useful component extraction materials. The cephalopods raised by the feeding device of the present invention have excellent growth properties and are rich in proteins, so they are excellent in taste, contain many components contributing to health, and are excellent for food use.

The bait casting devices 12 to 17 according to the modification will be described with reference to fig. 1. The bait casting device 12 shown in fig. 1 (B) is an example in which the housing 1 is formed in a substantially quadrangular prism shape. The recess outer edge 3 is four-deformed in a plan view, and the recess 1a of the housing 1 is also substantially quadrangular-prism-shaped. The outer shape of the feeder 13 shown in fig. 1 (C) is substantially quadrangular prism-shaped, as with the feeder 12, but may be a shape in which a part of the side wall is removed from the feeder 12. The housing 1 of the feeding device 13 is formed in a cylindrical shape with a part (one side) thereof opened, and has a concave portion 1a on the inner side thereof, and the feed 2 is disposed. As a result, the feed 2 is exposed to the opening 2a and the opening portions 2b and 2c at both ends of the tubular case 1 (the opening portion 2c is the end opposite to the opening portion 2 b). Therefore, the cephalopods can easily take the baits through the opening portions 2a to 2 c.

The bait casting device 14 shown in fig. 1 (D) is in a cup shape having a concave portion 1a at the center, and is shallower than the bait casting device 11, similarly to the bait casting device 11. Therefore, a large exposed surface of the feed 2 is secured, and therefore, the cephalopoda easily takes in the feed 2. The bait casting device 15 shown in fig. 1 (E) is arc-shaped with a semicircular cross section, and the feed 2 adheres to the inside of the arc portion of the housing 1 extending in the depth direction shown in the figure. That is, the inner side of the arc portion functions as the recess 1 a. In the case of the bait casting device 15 having such a shape, the feed 2 is easily taken in by the cephalopoda because the exposed surface of the feed 2 is enlarged as in the case of the bait casting device 13.

In the bait casting device 16 shown in fig. 1 (F), the housing 1 is substantially spherical, and a plurality of groove-like recesses 1a extending in the circumferential direction are formed around the housing, and the feed 2 is deposited inside the recesses. The space between the adjacent 2 grooves is a concave outer edge 3. As in the feeding device 16, a plurality of concave portions 1a for accommodating the feed 2 may be provided in 1 housing 1. Even in the case of such a configuration, since the exposed surface of the feed 2 is increased, the cephalopoda easily takes in the feed 2. In the bait casting device 17 shown in fig. 1G, a plurality of (6 in fig. 1G) through holes 1b are provided in the columnar housing 1, and the feed 2 is filled in each through hole 1 b. That is, the through-hole 1b functions as a recess for accommodating the feed 2. In the bait casting device 17, as in the bait casting device 16, a plurality of concave portions for containing the fodder 2 are provided in 1 housing 1. The through-hole 1b may not penetrate to hold the feed 2. Thus, the shape of the feeding device can be changed appropriately. The shapes of the housing and the recess can be changed as appropriate. Further, the bait casting device may be formed by combining the features of different bait casting devices among the bait casting devices 11 to 17.