JP5992394B2 - Solid food for ornamental fish - Google Patents

Description

  The present invention relates to a solid bait for ornamental fish fed to ornamental fish such as goldfish.

  As food for ornamental fish such as goldfish, those formed into granules, pellets or flakes are widely used. All of these baits are used by the aquarium fish breeders in the breeding water in the aquarium. The input bait is eaten by the ornamental fish, and the breeder sees the food, and can interact with the ornamental fish.

  Furthermore, as food for ornamental fish, as described in Japanese Patent Application Laid-Open No. 2007-110964 (Cited Document 1), food that is enclosed in a cylindrical container and frozen and frozen is also known. In this bait container, when feeding, the breeder cut off one end of the container, dipped the cut end into the breeding water in the aquarium, shaken the container by hand, and cut the bait inside the container. Feed by dispersing from the end or feed by squeezing with your fingers. Here, the container is formed of plastic or paper.

JP 2007-110964 (paragraphs [0006], [0009], [FIG. 2])

  According to the bait described in the above publication, since the container is formed of plastic or paper, the ornamental fish does not bite into the container, and as a breeder, the container is able to view the bait discharged and dispersed from the end of the cut side of the container. You can get in touch with the ornamental fish by watching the fish eat.

  However, the time to feed the aquarium fish is almost the only time for the breeder to interact with the aquarium fish. The contact was obtained. Therefore, the development of food with high contact has been desired.

  This invention is made | formed in view of the technical background mentioned above, The objective is to provide the food for ornamental fish with the high contact degree with ornamental fish in the case of feeding.

  The present invention provides the following means.

[1] While having a holding part held by a feeding worker during feeding and an immersion part immersed in the breeding water of ornamental fish,
A solid bait for ornamental fish, wherein at least the entire immersion part is formed of a bait material and a binder that can be eaten by the ornamental fish.

  [2] The solid bait for ornamental fish according to item 1, wherein the entire solid bait including the holding portion and the immersion portion is formed of the bait material and a binder.

[3] The whole solid bait is formed in a rod shape,
The solid bait for ornamental fish according to item 2 above, wherein one end side in the axial direction of the solid bait is used as the holding portion, and the other end side in the axial direction of the solid bait is used as the immersion portion.

[4] When using a pressing punch having a circular pressing surface with a diameter of 3 mm and pressing the solid bait before being immersed in water in the direction perpendicular to the axis of the solid bait with the pressing surface of the pressing punch, the solid bait The crushing load when crushing is set to 35-80N,
The solid bait for ornamental fish according to item 3 above, wherein the crushing load of the solid bait after being immersed in water for 30 s is set to 2 to 45 N.

  [5] The solid bait for ornamental fish according to item 3 or 4 above, wherein the diameter of the solid bait is set to 3 to 15 mm.

  [6] The solid food for ornamental fish according to any one of items 3 to 5 above, wherein the length of the solid food in the axial direction is set to 40 mm or more.

  [7] The binder according to 1 to 6 above, wherein 2 to 5% by mass of pregelatinized starch, 2 to 3% by mass of crosslinked starch, and 0.1 to 2% by mass of a synthetic polymer thickener are used as the binder. Solid food for ornamental fish according to any one of the above.

  [8] The solid food for ornamental fish according to any one of 1 to 7 above, which contains a large number of granular feed materials having a particle size of 0.5 to 1.5 mm in a dispersed state.

[9] The solid food for ornamental fish according to any one of the preceding items 1 to 8, wherein the bulk density of the solid food is set to 0.65 to 0.85 g / cm ³ .

  The present invention has the following effects.

  In the preceding paragraph [1], since at least the entire immersion part in the solid bait is formed from the bait material and the binder, the feeding worker (eg, ornamental fish breeder) has the solid bait holding part when feeding. When the immersion part of the solid bait is immersed in the breeding water, the aquarium fish bites on the surface of the immersion part and eats the immersion part as food. Therefore, as a feeding worker, not only the vision of watching the aquarium fish eating, but also the vibration when the aquarium fish bites on the surface of the immersion section from the immersion section through the holding section. You can also get in touch with the aquarium fish from the tactile sense that is transmitted to the feeding workers. Thereby, the degree of contact with ornamental fish can be increased during feeding.

  In the preceding item [2], the whole solid bait including the holding part and the immersion part is formed from the bait material and the binder, so that the solid bait can be easily manufactured, and the entire solid bait is used as the bait. Can do.

  In the preceding item [3], the whole solid bait is formed in a rod shape, so that the solid bait can be manufactured more easily.

  Moreover, since one end side in the axial direction of the solid bait is used as the holding portion and the other end side in the axial direction of the solid bait is used as the immersion portion, the immersion portion of the solid bait is eaten by the ornamental fish, and the immersion portion becomes short. If you soak the other end of the solid food in the breeding water, you can feed the aquarium fish continuously without interrupting it, so do not interrupt the time to interact with the aquarium fish. Can continue.

  In the preceding item [4], the crushing load for the solid bait before being immersed in water and the crushing load for the solid bait after being immersed in water are set in predetermined ranges, respectively, so that the feeding worker Can prevent the holding part from cracking due to vibration when picking up the holding part of the solid bait with the fingertips of the hand or when the ornamental fish bites on the surface of the immersion part. Even if it is a type that does not have teeth for biting off the food such as goldfish, the ornamental fish can surely eat the immersion part of the solid food immersed in the breeding water from the surface, It is possible to reliably prevent the immersion part from cracking due to vibration when biting.

  In the preceding item [5], the diameter of the solid bait is set within a predetermined range, so that it becomes easy for the feeding operator to hold the holding portion of the solid bait with the fingertip of the hand, and a plurality of animals are provided on the surface of the solid bait immersion portion. The aquarium fish can bite at the same time, and a high biting vibration can be obtained. The vibration when the aquarium fish bites and the aquarium fish bite the immersion part and the immersion part breaks or breaks. Can be reliably prevented, and furthermore, it is possible to reliably prevent the ornamental fish having a small mouth from being caught when the immersion part is eaten from the surface.

  In the preceding item [6], when the length of the solid bait in the axial direction is set to a predetermined length or more, even when the aquarium is a water tank with an upper lid, for example, the feeding operator picks the holding portion of the solid bait with the fingertip. Hold the soaked portion of the solid bait into the water tank through the gap of the upper lid, and the soaked portion can be soaked in the breeding water. Therefore, it is not necessary to remove the upper lid when feeding, and the feeding operation can be easily performed.

  In the previous item [7], the pregelatinized starch can stably bind the bait material, the cross-linked starch can suppress excessive gelatinization, and the synthetic polymer thickener can not only maintain viscosity but also retain water. Improves water and water absorption, makes it difficult for the immersion part to collapse when the immersion part is immersed in the breeding water, and can reliably eat a kind of ornamental fish (eg, goldfish) that does not have teeth to bite the bait. It becomes like this.

  In the previous item [8], this is true even for a kind of ornamental fish (eg, goldfish) that does not have teeth to bite the bait because it contains a large number of granular bait materials with a particle size in the predetermined range in a dispersed state. The granular bait material can be caught when the immersion part is eaten from the surface, and the immersion part can be reliably eaten.

  In the preceding item [9], by setting the bulk density of the solid bait within a predetermined range, the crushing load about the solid bait before being immersed in water and the crushing load about the solid bait after being immersed in water Can be reliably set within the predetermined ranges.

  Furthermore, if the solid bait is eaten from the immersion part and the length of the holding part of the solid bait becomes shorter, the solid bait floats on the surface of the breeding water when the solid bait is put into the aquarium. The aquarium fish can be easily eaten, and if there is any leftover food, it can be easily removed, thereby suppressing the deterioration of the quality of the breeding water caused by the leftover food.

FIG. 1 is a perspective view of a solid food for ornamental fish according to an embodiment of the present invention. FIG. 2 is a schematic view of a cross section of the solid bait. FIG. 3 is a cross-sectional view of the aquarium showing a state when the solid bait is given to the aquarium fish. FIG. 4 is a schematic front view of a measuring device for explaining a method of measuring a crushing load for the solid bait. FIG. 5 is a schematic diagram for explaining the method for producing the solid bait.

  Next, an embodiment of the present invention will be described below with reference to the drawings.

  A solid bait 1 according to an embodiment of the present invention is formed of a molded body formed in a rod shape (stick shape) as shown in FIG. 1, and as shown in FIG. 3, breeding water in an aquarium 5 7 is given to a plurality of ornamental fishes 8 (e.g. goldfish) swimming in 7 as food by the feeding operator 20. The feeding worker 20 usually corresponds to the breeder of the ornamental fish 8. In this embodiment, the aquarium 5 has a top lid 6, and the breeding water 7 is water (fresh water, seawater, etc.) corresponding to breeding of the ornamental fish 8.

  As shown in FIG. 2, the cross-sectional shape of the solid bait 1 is substantially circular. Furthermore, the cross-sectional shape of the solid bait 1 and its diameter D are set substantially constant in the axial direction of the solid bait 1, respectively.

  As shown in FIGS. 1 and 3, one end side of the solid bait 1 in the axial direction constitutes a holding portion 1 a that is held by the fingertip of the hand of the feeding operator 20 when feeding the aquarium fish 8. The other end side of the solid bait 1 in the axial direction constitutes an immersion part 1 b that is immersed in the breeding water 7 when feeding the ornamental fish 8.

  Further, the solid bait 1 is entirely formed in a predetermined shape (that is, a rod shape) from a bait material 2a that can be eaten by the ornamental fish 8 and its binder 2b (see FIG. 2). The solid bait 1 has a holding portion 1 a of the solid bait 1 held by the feeding operator 20 above the water surface of the breeding water 7 in the aquarium 5, and an immersion portion 1 b of the solid bait 1 is raised in the aquarium 5. The fish is fed to the aquarium fish 8 while immersed in the water 7.

  It is as follows when the feeding method to the ornamental fish 8 of the solid bait 1 in this embodiment is explained in full detail.

  That is, as shown in FIG. 3, a notch formed at the end of the upper lid 6 in the water tank 5 by the feeding operator 20 holding the holding portion 1 a formed from one end side in the axial direction of the solid bait 1 with the fingertips of the hand. The immersion part 1b formed on the other end side in the axial direction of the solid bait 1 is inserted into the water tank 5 through the gap such as the window hole 6a, and immersed in the breeding water 7 in the water tank 5. Thereby, the ornamental fish 8 bites on the surface of the immersion part 1b and comes to eat the immersion part 1b as food. For this reason, the feeding operator 20 not only has a vision of watching the aquarium fish 8 eating food, but also the vibration when the aquarium fish 8 bites on the surface of the immersion part 1b. The contact with the aquarium fish 8 can also be obtained from the tactile sense that it is transmitted to the feeding operator 20 through the holding portion 1a. Thereby, the contact degree with the ornamental fish 8 can be raised.

  And the feeding operator 20 immerses the lower end part (other end part) of the solid bait 1 in the breeding water 7 as the immersion part 1b of the solid bait 1 is eaten by the ornamental fish 8 and the immersion part 1b becomes shorter. To go. By carrying out like this, it can feed continuously, without interrupting feeding to the ornamental fish 8, Therefore Therefore, it can continue without interrupting the time which contacts with the ornamental fish 8. FIG.

  In the solid bait 1 of this embodiment, since the feeding operation is performed with the holding portion 1a of the solid bait 1, the holding portion when the feeding operator 20 picks the holding portion 1a of the solid bait 1 with the fingertip of the hand. It must be so hard that 1a does not break. On the other hand, there are some types of ornamental fish 8 that do not have teeth for biting the bait, such as goldfish. Therefore, even with such types of ornamental fish 8, the solid bait 1 is not contained in the breeding water 7. It must be hard (soft) so that the ornamental fish 8 can eat away the immersion part 1b from its surface when the immersion part 1b is immersed. Then, when this inventor repeated and examined various experiment, as solid hardness, the solid load after being immersed in breeding water 7 and the crushing load about solid food 1 before being immersed in breeding water 7 It was found that such a requirement can be satisfied by setting the crushing load for the bait 1 to a predetermined range. The measuring method of each crushing load is as follows.

  In FIG. 4, 10 is a measuring device that measures the crushing load of the solid bait 1. In the present embodiment, for example, a “creep meter” manufactured by Yamaden Corporation can be used as the measuring instrument 10. The measuring instrument 10 includes a sample stage 12, a cylindrical pressing punch 11 having a flat pressing surface 11a at the tip, and the like. In order to correspond to the size of the mouth of the goldfish which is the ornamental fish 8 bred most in general households as the pressing punch 11, the shape of the pressing surface 11a is circular and the diameter B of the pressing surface 11a 3 mm is used.

  The sample stage 12 is arranged horizontally. The pressing punch 11 is arranged above the sample stage 12 with the pressing punch axis vertical, and the pressing surface 11a is formed perpendicular to the pressing punch axis.

  When measuring the crushing load about the solid bait 1 before being immersed in the breeding water 7, the solid bait 1 before being immersed in the breeding water 7 is horizontally laid down on the sample table 12, and this When the middle portion of the solid bait 1 is pressed downward with the pressing surface 11a of the pressing punch 11 as a direction perpendicular to the axis of the solid bait 1, the load when the solid bait 1 is crushed and broken is expressed as “crushing load”. To measure.

  Here, in the present embodiment, due to the structure of the measuring instrument 10, the pressing surface 11 a of the pressing punch 11 is not moved downward toward the solid bait 1 (the moving direction of the arrow P <b> 1), but the sample stage 12 is moved to the pressing punch 11. By moving upward toward the pressing surface 11a (moving direction of the arrow P2), the axially intermediate portion of the solid bait 1 is pressed downward by the pressing surface 11a of the pressing punch 11. Moreover, the load speed | rate at the time of pressing the axial direction intermediate part of the solid bait 1 with the press surface 11a of the press punch 11 is set to 1 mm / s.

  When measuring the crushing load of the solid feed 1 after being immersed in the breeding water 7, the whole solid feed 1 is immersed in the breeding water 7 for 30s and taken out from the breeding water 7, and this solid feed 1 is sampled. It is horizontally laid down on the table 12. And the crushing load about the solid bait 1 after being immersed in the breeding water 7 is measured by the same measuring method as the measuring method of the crushing load about the solid bait 1 before being immersed in the breeding water 7.

  Here, the reason why the immersion time of the solid bait 1 in the breeding water 7 is set to 30 s is that the ornamental fish 8 bites into the immersion part 1b from the time when the immersion part 1b of the solid bait 1 is immersed in the breeding water 7. This is because the average time to start eating is about 30 seconds, and it is necessary for the ornamental fish 8 to be hard enough to eat the immersion part 1b at this time.

  In the present invention, the crushing load hardly changes even if the liquid in which the solid bait 1 is immersed for measuring the crushing load is not the actual breeding water 7 but normal water such as tap water. Ordinary water such as tap water may be used as the breeding water 7 in which the solid bait 1 is immersed in the measurement of the crushing load.

  As a result of the experiment by the present inventor, the crushing load for the solid bait 1 before being immersed in the breeding water 7 is set to 35 to 80 N, and the crushing load for the solid bait 1 after being immersed in the breeding water 7 It was found desirable to be set to 2 to 45N. The reason is as follows.

  When the crushing load on the solid bait 1 before being immersed in the breeding water 7 is 35 N or more, when the feeding operator 20 picks the holding portion 1a of the solid bait 1 with the fingertips during feeding, Further, it is possible to reliably prevent the holding portion 1a from being broken by vibration when the ornamental fish 8 bites on the surface of the immersion portion 1b. Furthermore, when this crushing load is 80 N or less, the crushing load for the solid bait 1 after being immersed in the breeding water 7 can be reliably set in the range of 2 to 45 N.

  Furthermore, since the crushing load about the solid bait 1 after being immersed in the breeding water 7 is 2N or more, it is ensured that the immersion part 1b of the solid bait 1 is cracked by vibration when the ornamental fish 8 is biting. Can be prevented. Further, since the crushing load is 45 N or less, even if the ornamental fish 8 is of a type that does not have teeth for biting the goldfish or the like, the solid bait 1 immersed in the breeding water 7 can be used. The ornamental fish 8 can surely eat away the immersion part 1b from the surface.

  Furthermore, as a result of experiments by the inventors, it has been found that the diameter D of the solid bait 1 is desirably set to 3 to 15 mm. The reason is as follows.

  Since the diameter D of the solid bait 1 is 3 mm or more, it becomes easy for the feeding operator 20 to hold the holding portion 1a of the solid bait 1 with the fingertips of the hand, and a plurality of ornaments are provided on the surface of the immersion portion 1b of the solid bait 1 The fish 8 can bite at the same time, and a high biting vibration is obtained. The vibration when the ornamental fish 8 is biting and the ornamental fish 8 hit the immersion part 1b, so that the immersion part 1b is broken. It can be surely prevented from being broken. Furthermore, when the diameter D of the solid bait 1 is 15 mm or less, it is possible to reliably prevent the ornamental fish 8 having a small mouth from being caught when the immersion part 1b is eaten from the surface. A particularly desirable diameter D is 4 to 6 mm.

  Furthermore, as a result of experiments by the inventor, it has been found that the axial length L of the solid bait 1 is preferably set to 40 mm or more. The reason is as follows.

  Even when the water tank 5 has an upper lid 6 as in the present embodiment, as shown in FIG. 3, the feeding operator 20 holds the holding portion 1 a of the solid bait 1 with the fingertips of the hand, The immersion part 1b can be immersed in the breeding water 7 by inserting the immersion part 1b of the solid bait 1 into the water tank 5 through a gap such as the notch window hole 6a. Therefore, it is not necessary to remove the upper lid 6 during feeding, and the feeding operation can be easily performed.

  In addition, although the upper limit of the length L in the axial direction of the solid bait 1 is not limited, if the length L of the solid bait 1 is too long, the feeding operation becomes difficult or the solid bait 1 is not fed during feeding. Since there is a possibility of accidental breakage, the length L of the solid bait 1 is preferably set to 150 mm or less (particularly desirably 100 mm or less) in order to avoid this.

  Of the feed material 2a and the binder 2b forming the solid feed 1, the feed material 2a contains nutrients that can be eaten by the ornamental fish 8 and is necessary for the growth of the ornamental fish 8, and preferably soybeans. Protein, corn, fish meal, spinach, carrots, wakame flour, shrimp meal (shrimp), etc. are mixed and used.

  The binder 2b is used for binding the bait material 2a so that the ornamental fish 8 can eat. In particular, as the binder 2b, it is desirable to use 2-5% by mass of pregelatinized starch, 2-3% by mass of crosslinked starch, and 0.1-2% by mass of a synthetic polymer thickener. The reason is as follows.

  That is, the pre-gelatinized starch can stably bind the bait material 2a, the cross-linked starch can suppress excessive gelatinization, and the synthetic polymer thickener not only provides viscosity but also water retention and water absorption. When the immersion part 1b of the solid bait 1 is soaked in the breeding water 7, it is difficult to collapse and even an ornamental fish 8 such as a goldfish without teeth for biting the bait can be surely eaten. A thickening stabilizer (modified starch) or the like is used as the alpha starch and the crosslinked starch, and sodium polyacrylate or the like is used as the synthetic polymer thickener.

  When manufacturing the solid bait 1 of this embodiment, as the bait material 2a and the binder 2b of the solid bait 1, for example, soybean protein: 10-20 mass%, corn: 2-10 mass%, fish meal: 2- 10% by weight, shrimp meal (shrimp): 1-10% by weight, vegetable oil: 1-5% by weight, thickening stabilizer (modified starch): 1-10% by weight, baking powder: 1-8% by weight, glycine: 0.1 to 3% by mass, sodium acetate: 0.1 to 2% by mass, thickener (sodium polyacrylate): 0.1 to 2% by mass, remainder: water is kneaded by a kneader such as a mixer.

  Then, as shown in FIG. 5, the kneaded material thus obtained is loaded into the tube 15. A molding nozzle 16 is attached to the tip of the tube 15, and a molding port 16 a having a circular cross section is formed at the tip of the molding nozzle 16. Then, while extruding the kneaded material in the tube 15 from the molding port 16a of the molding nozzle 16 onto the tray 17, the molding nozzle 16 is moved in the direction opposite to the extrusion direction (the direction of the arrow Q), so that the length of the circular cross section is increased. A long rod-shaped solid feed material 3 is obtained. Next, the desired solid bait 1 is obtained by subjecting the material 3 to a predetermined length (scheduled cutting line C) and drying by heating. Here, since the solid bait 1 is rod-shaped (stick shape), the solid bait 1 can be easily manufactured by such a manufacturing method.

  Moreover, the solid bait 1 of this embodiment contains many granular bait | feed material 2a with a particle size of 0.5-1.5mm in the state disperse | distributed over the whole solid bait 1 as a result of the experiment by this inventor. It turned out to be desirable. By doing this, even if it is an ornamental fish 8 such as a goldfish that does not have teeth for biting off the bait, this granular bait material 2a can be caught when the immersion part 1b is eaten from the surface, The immersion part 1b can be reliably eaten.

Furthermore, it is desirable that the bulk density of the solid bait 1 is set to 0.65 to 0.85 g / cm ³ . By carrying out like this, the crushing load about the solid bait 1 before being immersed in the breeding water 7 and the crushing load about the solid bait 1 after being immersed in the breeding water 7 are set reliably in the predetermined ranges, respectively. be able to. Moreover, when the solid bait 1 is eaten from the immersion part 1b and the length of the holding part 1a of the solid bait 1 is shortened, when the solid bait 1 is put into the aquarium 5, the surface of the breeding water 7 is increased. Since the solid bait 1 floats, the aquarium fish 8 can be easily eaten, and if there is leftover food, it can be easily removed. Can be suppressed. The bulk density of the solid bait 1 can be easily set to the above range by subjecting soybean protein to an aeration process.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

  In the present embodiment, the entire solid bait 1 is formed from the bait material 2a and the binder 2b. However, in the present invention, for example, only the immersion part 1b in the solid bait 1 is formed from the bait material 2a and the binder 2b. It does not exclude that.

  Furthermore, in this invention, the solid bait 1 does not exclude that the cross-sectional shape is a polygonal shape.

  The solid bait according to the present invention is suitably used as a food for aquarium fish as an aquatic pet, but can also be used as a bait for other aquatic pets (eg, aquatic turtles) as well as ornamental fish. It is.

  The present invention can be used as a solid bait for ornamental fish (eg, goldfish, tropical fish, medaka).

1: solid bait 1a: holding part 1b: immersion part 2a: bait material 2b: binder 5: aquarium 7: breeding water 10: crushing load measuring instrument 11: pressing punch 11a: pressing surface 20: feeding worker

Claims (9)

While having a holding part held by the feeding worker during feeding and an immersion part immersed in the breeding water of ornamental fish,
A solid bait for ornamental fish, wherein at least the entire immersion part is formed of a bait material and a binder that can be eaten by the ornamental fish.   The solid bait for ornamental fish according to claim 1, wherein the entire solid bait including the holding part and the immersion part is formed of the bait material and a binder. The whole solid bait is formed in a rod shape,
The solid bait for ornamental fish according to claim 2, wherein one end side in the axial direction of the solid bait is used as the holding portion, and the other end side in the axial direction of the solid bait is used as the immersion portion. Using a pressing punch having a circular pressing surface with a diameter of 3 mm, when the solid bait before being immersed in water is pressed in the direction perpendicular to the axis of the solid bait with the pressing surface of the pressing punch, the solid bait is crushed. The crushing load when set to 35-80N,
The solid food for ornamental fish according to claim 3, wherein a crushing load for the solid food after being immersed in water for 30 seconds is set to 2 to 45N.   The solid food for ornamental fish according to claim 3 or 4, wherein the diameter of the solid food is set to 3 to 15 mm.   The solid bait for ornamental fish according to any one of claims 3 to 5, wherein the axial length of the solid bait is set to 40 mm or more.   As the binder, 2-5% by mass of pregelatinized starch, 2-3% by mass of cross-linked starch, and 0.1-2% by mass of a synthetic polymer thickener are used. Solid food for ornamental fish as described in 1.   The solid bait for ornamental fish according to any one of claims 1 to 7, which contains a large number of granular bait materials having a particle diameter of 0.5 to 1.5 mm in a dispersed state. Solid food for ornamental fish according to any one of claims 1 to 8, wherein the bulk density of the solid food is set to 0.65 to 0.85 g / cm ³ .

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