JP7088080B2 - Animal breeding method and animal breeding equipment - Google Patents

Description

The present invention relates to an animal breeding method and a breeding apparatus. More specifically, the present invention relates to an animal breeding method and an animal breeding apparatus capable of promoting the growth of an animal while suppressing the management burden within a predetermined period for raising the animal.

At the production sites of various animals, sufficient standardization of production work has not yet been achieved, and there are many cases where the experience and intuition of producers according to the production purpose are relied on. It is long-awaited that the work of feeding animals can be performed more efficiently. Patent Document 1 discloses a feeding system including an activity amount measuring means for measuring an activity amount of an animal for the purpose of suppressing an excess or deficiency of the feeding amount to the animal. Patent Document 2 further includes a control unit that detects the rotation amount, movement amount, or number of actions of a predetermined detection device and sends a feeding instruction to the feeding device for the purpose of controlling the timing of feeding the animal. The feeding system is disclosed.

Japanese Unexamined Patent Publication No. 2006-27128 Japanese Unexamined Patent Publication No. 2018-78869

However, the feeding system of Patent Documents 1 and 2 is a detection device (activity amount measuring means, or rotation amount, movement amount) that directly or indirectly acquires animal activity information one by one in order to properly raise the animal. Or a detection device that detects the number of actions) is required. In such a system, it is necessary to properly manage the detection device and at the same time grasp the activity status of the animal in real time for the entire predetermined period in which the animal is raised. Therefore, it is inconvenient for producers in that the burden of operating the feeding system is not small.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an animal breeding method and an animal breeding apparatus that promote the growth of an animal while suppressing the management burden within a predetermined period for breeding the animal. And.

The method for raising an animal of the present invention that solves the above problems is shown below.
(1) Obtaining the tide fluctuation during a predetermined period for raising an animal, and determining the time synchronized with the tide fluctuation cycle as a specific interval until feeding after the feeding start time when feeding the animal is started. A feeding cycle step of planning a feeding time and a feeding cycle step of starting feeding at the feeding start time after performing the feeding time planning process and repeating feeding at each specific interval from the feeding start time. A method of raising animals whose gist is to do.
(2) The method for raising an animal according to (1) above, wherein the specific interval is a time corresponding to a shade day.
(3) In the feeding timing planning process, after obtaining the tide fluctuation, one or more maximum timings selected from the maximum timing including the time when the tide fluctuation shows the maximum is set as the feeding start timing. The method for raising an animal according to (1) or (2) above.
(4) The method for raising an animal according to any one of (1) to (3) above, wherein in the feeding cycle step, control is performed so that the light and dark conditions are only in the light period.
(5) The method for raising an animal according to any one of (1) to (3) above, wherein in the feeding cycle step, the light and dark conditions are controlled in a cycle synchronized with the specific interval.
(6) The tide fluctuation is one of the above (1) to (5) obtained by referring to at least one of the gravitational acceleration that fluctuates in conjunction with the solid tide and the tide level that fluctuates in conjunction with the ocean tide. The described animal breeding method.
(7) The method for raising an animal according to any one of (1) to (6) above, wherein the animal belongs to a fish class, a bird class, an amphibian class or a reptile class.
(8) In the above (7), the feeding cycle step is performed when the animal is a commercial animal and the feeding cycle step is performed when the animal is 1/50 to 1/2 of the time required to grow until it is scheduled to be shipped after hatching. The animal breeding method described.

Other animal breeding devices of the present invention that solve the above problems are shown below.
(9) An animal breeding device including a feeding cycle control unit that controls an interval of feeding an animal, wherein the feeding cycle control unit is a tide fluctuation information acquisition unit that obtains a tide change within a predetermined period for breeding the animal. And a specific interval determination unit that determines the time synchronized with the tide fluctuation cycle based on the tide fluctuation as a specific interval from the feeding start time when the animal is started to be fed to the next feeding. The gist is to be prepared.
(10) The animal breeding device according to (9) above, wherein the feeding cycle control unit further has a light / dark condition control unit that maintains a light period during the feeding cycle.
(11) The animal breeding apparatus according to (9) above, wherein the feeding cycle control unit further has a light / dark condition control unit that controls light / dark conditions in a cycle synchronized with the feeding cycle.
(12) The feeding cycle control unit further includes a feeding start time specifying unit that specifies the feeding start time based on the tide fluctuation obtained by the tide fluctuation information acquisition unit, and specifies the feeding start time. The section specifies one or more maximum time selected from the maximum time including the time when the tide fluctuation shows the maximum as the feeding start time. The animal breeding device described.

In the animal breeding method of the present invention, the tide fluctuation for a predetermined period is obtained before the feeding cycle step is performed, and the time synchronized with the tide fluctuation cycle is determined as a specific interval for feeding the animal. Therefore, the feeding time can be easily planned in advance. Further, since the feeding cycle step of repeating feeding at the determined specific intervals is performed, the growth of the animal can be promoted.

The other animal breeding apparatus of the present invention is an invention in which the animal breeding method of the present invention is grasped from the viewpoint of the animal breeding apparatus, and has the same effect as the present invention. That is, the specific interval determination unit of the feeding cycle control unit determines in advance the time synchronized with the tide fluctuation cycle as the specific interval for feeding the animal, based on the tide fluctuation obtained by the tide fluctuation acquisition unit. You can easily and systematically understand when to do it. Further, since the feeding cycle step of repeating feeding at the determined specific intervals is performed, the growth of the animal can be promoted.

It is a figure explaining the raising method of an animal. It is a flowchart explaining the breeding method of an animal. It is a flowchart explaining the method of raising an animal of an Example. It is a figure explaining the fluctuation of a tide. 1 It is a figure explaining the shade sun. It is a figure explaining the tide change along the meridian. It is a figure explaining the animal breeding apparatus of an Example. It is a figure explaining the feeding cycle process of Examples 1 and 3. It is a figure explaining the feeding cycle process of Example 2. FIG.

Hereinafter, embodiments of the present invention will be described in detail.
Specific examples of the animal in the present invention include avian, reptile, amphibian, fish, and invertebrate. Among them, the animal preferably belongs to the fish class, the bird class, the reptile class or the amphibian class, and more preferably belongs to the reptile class or the amphibian class. Specific animals belonging to the reptiles include turtles, scaled reptiles including lizards and snakes, crocodile, etc., and specific animals belonging to the amphibian include salamanders, newts, and frogs. Examples include frog eyes.

In the examples described later, as a representative of the above, the breeding of Japanese soft-shelled turtles, which are popular as food animals in Japan, is taken up and explained. Japanese soft-shelled turtles are still recognized as expensive foods because the cultivation efficiency is poor in the aquaculture method.
For example, in the breeding method in which juvenile turtles are simply released into aquaculture ponds, soft-shelled turtles do not eat until the water temperature of the pond begins to drop to about 15 to 10 ° C and then rises to about 15 to 20 ° C. Therefore, the growth of soft-shelled turtles stops while they are not eating. When the water temperature rises above 20 ° C, spawning begins, and the fertilized egg hatches in sand at about 30 ° C after 50 to 60 days, and a juvenile turtle weighing 2 to 3 g is born. Since the growth cycle of soft-shelled turtles is like this, the method of aquaculture-growing soft-shelled turtles in the open field requires many years of 4 to 6 years in order to become an adult with a body weight of 500 g or more.
In general, the cultivation of soft-shelled turtles is managed by dividing them into stages according to their growth, such as a hatching stage, a moderate breeding stage, and a stage of growing from a medium to an adult. Under these circumstances, detailed management is required in the early stages of growth. In order to suppress cannibalism, each pond for juvenile turtles, breeding or parent is prepared, and in some cases, the number of ponds is increased according to the age and size of the soft-shelled turtles.

In this way, in open-field cultivation that is left to nature and simply released into aquaculture ponds, the efficiency of cultivation deteriorates. A method of developing and growing aquaculture facilities is being carried out (see, for example, Japanese Patent No. 5524431). However, as explained in the [Prior Technique] at the beginning, if the method of developing the training facility is relied on, the financial or human burden for maintaining and managing the training facility becomes large.

Problems in raising animals such as Japanese soft-shelled turtles can occur not only in the cultivation of edible turtles but also in the supply of pet animals to the market. As a result of diligent studies, the present inventors have surprisingly increased the weight of animals by feeding them at a timing synchronized with the fluctuation cycle of the tide, instead of relying on the development of special breeding facilities. I found it to have an impact. In other words, since it was possible to promote the breeding of animals, it will be described in detail below.

[1] Animal breeding method As shown in FIGS. 1 and ₂ , in the animal breeding method of the present invention, the tide fluctuation (Ti) during a predetermined period (P0) for raising an animal is obtained (step 11), and the tide is raised. The time synchronized with the variable cycle (T ₀ ) is determined as a specific interval (T (int)) from the feeding start time (Ps) at which the animal is started to be fed to the next feeding (step 12). After performing the timing planning step (step1) and the feeding timing planning step (step1), feeding is started at the feeding start time (Ps) (step21), and a specific interval (T (int)) from the feeding start time (Ps). It is characterized by performing a feeding cycle step (step 2) in which feeding is repeated (step 22) at each time when the animals are placed.

1. 1. Step of planning the feeding time In this embodiment, the feeding time for feeding is planned before the actual feeding for raising the animal. As shown in FIG. 2, in the feeding timing planning step (step 1), (a) a step of obtaining tide fluctuations (step 11), and (b) a step of determining a specific interval until feeding after the feeding start time (step 12). I do. Further, in the feeding time planning step (step 1) according to the present embodiment, as shown in FIG. 3, (c) a step (step 13) for specifying the feeding start time may be performed.

(A) Steps for determining tidal fluctuations Generally, the fluctuations in tidal phenomena are relative gravitational acceleration (theoretical value), meteorological data (barometric pressure, tide name, tide level, tidal range, etc.), and yellow meridian difference (sun and moon). It is understood based on the information related to the yellow tide difference) and the age of the moon. In addition, the tidal fluctuation cycle can be obtained based on the tidal phenomenon grasped in this way. The step of "determining the tide fluctuation" according to the present embodiment is mainly by estimating the periodic fluctuation of the tide within the predetermined period for which the animal is scheduled to be raised in the future. It means working to understand the fluctuations.

In the present embodiment, the length of the predetermined period for raising the animal is not particularly limited, and is appropriately adjusted according to the type of the animal. Specifically, the "predetermined period" is, for example, 6 hours, 12 hours, 24 hours, 48 hours, 72 hours, 1 week, 2 weeks, 4 weeks, 3 months, 6 months, 1 year, etc. be able to.
Specific methods for determining tide fluctuations include calculating fluctuating gravitational acceleration, estimating tide fluctuations from the moon-age calendar and yellow meridian differences, and tide fluctuations from meteorological data (barometric pressure and tide level). Examples include a method of acquiring or estimating an expected value, a method of referring to a well-known tide force fluctuation related to astronomical tides, and the like. In order to perform the step of obtaining the tide change, the tide change within a predetermined period from the scheduled start date to the end date of the breeding of the animal may be appropriately obtained by the above method.

[Astronomical tide]
For example, the step of finding tidal variability may be a method of referencing well-known astronomical tidal variability. That is, the common general technical knowledge regarding astronomical tides known as the laws of nature as described below may be used.
The force that causes the astronomical tidal force on the earth (tidal force) is known as the resultant force of the attractive force from the celestial body and the centrifugal force due to the relative rotational movement of the earth and the celestial body. The movement of the celestial body is basically periodic, and the period and phase of the tidal force acting according to the size and movement of each celestial body are calculated. Therefore, astronomical tidal fluctuations can be understood more accurately. The astronomical tides that act on the Earth are typically thought to be due to the gravitational forces associated with the Earth and the Moon. In this case, the tide fluctuation may be understood as a fluctuation in which the time during which the earth rotates from the south to the next south of the moon at the animal breeding point (observation point) is one cycle.

Hereinafter, the tidal force exerted by the moon on the earth will be described with reference to FIGS. 4 and 5. FIG. 5 is a diagram schematically showing the positional relationship between the earth and the moon from the time when the moon moves southward to the next time when the moon moves southward. FIG. 4 is a diagram schematically showing the arrangement X in which the sun-moon-earth is aligned on a straight line in FIG. As shown in the figure, the earth (E) rotates and revolves around the sun (S). Similarly, the moon (M) revolves around the earth while rotating. Therefore, there is an earth-moon rotational motion system centered on the center of gravity (G) between the moon and the earth.
For example, at 0:00, the moon is sandwiched between them, and the observation point A of the earth-the sun is arranged on a straight line (arrangement X). That is, in the arrangement X, the sun and the moon are in the south center at the observation point A. Since the observation point A faces the moon in the front direction, it is arranged so that the distance to the moon is the smallest, the attractive force received from the moon becomes large, and the seawater (S / W) swells on the moon side. It is attracted to the high tide (see Fig. 4). At this time, the point B on the back side of the observation point A on the earth is arranged so that the distance from the moon is the largest, and the attractive force received from the moon is the smallest, while the centrifugal force of the rotating system centered on the center of gravity G is the centrifugal force. Is relatively greatly affected by. Therefore, the seawater (S / W) is in a high tide state where it swells away from the opposite side of the moon. In this way, when the moon moves southward at the observation point A on the earth, the tidal force along the radial direction works greatly at the observation points A and B due to the arrangement with the moon, and the tidal fluctuation changes. Shows the maximum.
On the other hand, at observation points J and K, which are arranged orthogonally to observation points A and B, the resultant force of the attractive force from the moon and the centrifugal force according to the distance from the center of gravity G acts in the direction of the center of the earth (E / C). .. Seawater (S / W)) flows toward the center of the earth along the surface of the earth, so that the tide is low at observation points J and K. In this way, at observation points J and K, which are arranged orthogonally to the observation points AB, the action of the tidal force along the radial direction becomes small due to the arrangement with the moon, and the tidal fluctuation is minimal. Is shown.

The time from when the sun goes south to the next is defined as 24 hours. Since the earth rotates and revolves 24 hours after 0:00, if the first south-central time at observation point A is 0:00, then at 24:00 when the sun is south-center at observation point A. The earth revolves around the sun at an angle O ₁ (exaggerated and shown in the actual calculated value) to reach the observation point A-the arrangement X'where the sun is arranged on a straight line. At this time (24:00), the moon also revolves around the earth at an angle α ₁ (α ₁ > O ₁ , the actual calculated value cannot be shown accurately), so the moon at observation point A is the moon. Has not yet reached the south. When the moon moves southward at the observation point A, the earth revolves from the angle O ₁ to the angle O ₂ (the actual calculated value is not shown accurately), and the moon also revolves at the angle α ₂ (> α ₁ ). It is necessary to revolve to) and reach the arrangement Y where the observation point A-moon is arranged on a straight line. In this way, it takes about 50 minutes to revolve only the angle O ₂ after the earth revolves at the angle O ₁ by the time the moon moves southward next time. Therefore, one shaded day is treated as about 24.8 hours on average, and it can be understood that the tide fluctuation caused by the moon is a fluctuation with one shaded day as one cycle.
As described above, the step for obtaining the tide fluctuation may be a method of referring to the astronomical tide fluctuation in consideration of the basic natural law.

In addition to referring to the laws of nature as described above, in the step of finding tide fluctuations, tide information within a predetermined period for raising animals is acquired in advance as more objectively quantified information. May be good.
Tide information is roughly classified according to changes in the state of the earth, such as solid tides based on elastic fluctuations of solid parts on the ground, ocean tides appearing as sea level fluctuations, and atmospheric tides based on atmospheric pressure fluctuations. And there is a way to understand. Among these, it is preferable to refer to the solid tide, and specifically, it is preferable to use the tide information regarding the gravitational acceleration linked to the fluctuation of the solid tide.
Since the gravitational acceleration is considered to fluctuate periodically according to the elastic fluctuation of the solid part on the ground, it is calculated based on the topographical information of the breeding point of the animal based on the topography of the breeding point of the animal. Can be done. Since terrain cannot be easily deformed compared to sea level and atmosphere, solid tide fluctuations are more likely to be predicted. When the gravitational acceleration linked to the solid tide is used as the tide information, it is preferable because the highly accurate calculation result can be exerted on a wide range on the ground and the accuracy of understanding the future tide fluctuation is improved.

Further, as another preferable example, tide information regarding the tide level linked to the fluctuation of the ocean tide can also be used. That is, the step of obtaining the tide fluctuation is also performed by acquiring the tide information for predicting the tide level fluctuation.
Since tide level fluctuations have a close impact on human life, information on tide level fluctuations can be obtained from various marine management organizations (Japan Coast Guard, Japan Meteorological Agency, Geographical Survey Institute, Port Authority, etc.). easy. When the tide level linked to the ocean tide is used as the tide information, it is preferable in terms of the ease of obtaining such information.

In addition, in order to obtain tide fluctuations, it is possible to calculate the gravitational acceleration and gravity in solid tides, and to obtain tide level fluctuation predictions in ocean tides, but more preferably, multiple types of various tide information are acquired and combined. It can also be used.
Further, when the gravitational acceleration is used for predicting the fluctuation of the solid tide, the relative gravitational acceleration may be used as an index representing the gravitational acceleration as specifically described in Examples described later. When the relative gravitational acceleration is used as an index of the gravitational acceleration (and thus the fluctuation of the tide), the predicted value may be calculated for the relative gravitational acceleration that fluctuates along the time axis within a predetermined period.

(B) Step of determining a specific interval Next, a step of determining a specific interval, which is a feeding interval when feeding an animal, is performed (step 12). In the step of determining the specific interval, the fluctuation of the tide obtained in the step of obtaining the tide is referred to, and the fluctuation cycle is obtained based on the fluctuation. Then, the time synchronized with the tide fluctuation cycle is determined as a specific interval from the feeding start time when the animal is started to be fed to the next feeding.

For example, if you understand the changes based on the astronomical tide caused by the movement of the earth and the moon in "(a) Step to find the change of the tide", the moon is south at the observation point (cultivation point) of the earth. The time from the middle to the next south can be understood as the time corresponding to one cycle of tidal fluctuations. As mentioned above, such a shade day is known as about 24.8 hours on average. Therefore, the time synchronized with the tide fluctuation cycle is determined as a specific interval from the feeding start time to the feeding. That is, the time at a specific interval is determined to be the time corresponding to the shaded day.
Of the above-mentioned "time synchronized with the fluctuation cycle of the tide", "synchronize" may be the time of one cycle of the fluctuation cycle as it is, or may be an integral multiple, with respect to the obtained tide. It means that it may be 2, 1/4, etc. Specifically, the specific intervals are 12.4 hours (1/2 times), 37.2 hours (1.5 times), 49. It may be 6 hours (double) or the like. The time synchronized with the tide fluctuation cycle may be determined as a specific interval while considering the time suitable for growth by feeding according to various animals.
It should be noted that it is not always necessary to adopt 24.8 hours as the time indicating one shade, and an elaborate numerical value appropriately corrected according to the individual movement of the celestial body may be used. Further, the specific interval is preferably determined by specifying one type of time corresponding to the tide fluctuation cycle, but may be determined more than one type as long as it is the time synchronized with the tide fluctuation cycle.

In addition, in order to understand the tide fluctuations in the step of finding the tide fluctuations, for example, when the gravitational acceleration fluctuations are obtained for solid tides, the time corresponding to one cycle of the tide fluctuations is obtained from the obtained gravitational acceleration. Can be done. Specifically, when the fluctuation of the relative gravitational acceleration is calculated by using the tidal force prediction program, the time corresponding to one cycle of the tidal fluctuation can be obtained from the change with time of the calculated value.
For example, FIG. 6 shows an example in which the fluctuation of the relative gravitational acceleration is calculated in each place along the meridian at the same longitude and different latitude as the vicinity of Japan by using the solid tidal force prediction program of GOTIC2. As shown in the figure, the fluctuation mode of the relative gravitational acceleration differs depending on the location along the meridian, but the fluctuation cycle of the tide acting at each location of the observation point can be obtained according to each fluctuation mode (for example, in FIG. 6). See T ₀₁ to T ₀₄ ).
In addition, regarding ocean tides, even when the tide fluctuations are calculated by referring to the tide level prediction table published by related organizations, or when the calculated values of radial displacement of the sea surface are referred to using the ocean tide prediction program of GOTIC2. , Similarly, the fluctuation period of the tide can be obtained.
Further, the method of obtaining the fluctuation cycle by an appropriate method and determining the time synchronized with the fluctuation cycle of the tide as a specific interval can be performed in the same manner as when the fluctuation is understood based on the above-mentioned astronomical tide.

(C) Feeding start time specifying step In the feeding time planning step (step1), a step of specifying the feeding start time (step13) may be further performed.
The time to start feeding within a predetermined period may be arbitrarily selected without particular limitation, but the feeding disclosure time may be specified by referring to the tide fluctuation after performing the step for obtaining the tide fluctuation. .. For example, one or more maximum time selected from the maximum time Pm including Pmax when the obtained tide fluctuation shows the maximum may be specified as the feeding start time Ps. Similarly, for example, as shown in FIG. 6, the feeding start time Ps may be specified from the minimum time P ₀₁ min including the time when the tide fluctuation shows the minimum. If the obtained tide fluctuation is the fluctuation of the relative gravitational acceleration, it may be similarly specified from the time P ₀₁ (zero) at the zero point. Alternatively, it may be specified from the time P ₀₂ (1/4) advanced by 1 / 4T ₀₂ from the time when the maximum is shown. Alternatively, as the feeding start time, the maximum time P ₀₂ m, the minimum time P ₀₂ min, the zero point time P ₀₂ (zero) or the 1 / 4T ₀₂ advanced time P ₀₂ (1/4) may be mixed. Among these, from the viewpoint of surely promoting the breeding of animals, it is preferable to specify one or more maximum time Pm as the feeding start time Ps.

In the above description of "maximum time including the time when the obtained tide fluctuation shows the maximum", the description of "when the tide fluctuation shows the maximum" means the moment when the tide shows the maximum (for example). See "Pmax ₁ when showing maximum" shown in FIG. 8). The description of "maximum time including time indicating maximum" is used to express that "maximum time Pm" has a constant time width Tm including Pmax ₁ at (instantaneous) time indicating maximum (see FIG. 8). It is a thing. The specific "maximum time" time width Tm is not particularly limited as long as it is a time suitable for performing the feeding work according to the type of animal. Further, the description of "specifying one or more maximum time selected from the maximum time as the feeding start time" means that all of the maximum time Pm may be selected as the feeding start time Ps, but all are necessarily selected. It does not have to be, and it means that which maximum time is selected as the feeding start time is optional.

For example, as shown in FIG. ₁ , when the tidal information within P0 for a predetermined period is obtained, the obtained tidal fluctuation Ti is referred to, and the maximum is shown from the obtained tidal fluctuation Ti, Pmax ₁ to Pmax _l To extract. When this maximum is shown, one or more maximum times selected from the maximum times Pm ₁ to Pml including Pmax ₁ to Pmax _l can be specified as the feeding start time Ps ₁ to Ps _m ( _l > m). ..
In this case, since the feeding start time Ps ₁ to Ps _m is specified from the maximum time Pm ₁ to Pm _l , the tide fluctuation cycle T ₀ is set at the interval of each feeding start time Ps ₁ to Ps _m . The associated regularity arises. A plurality of feeding start times Ps ₁ to Ps _m are times when the feeding cycle described later is started, respectively. Selecting a plurality of feeding start times Ps ₁ to Ps _m gives regularity to the start time of the feeding cycle when the feeding cycles C ₁ to C _m corresponding to the respective feeding start times Ps ₁ to Ps _m are performed. It means to give. Therefore, it is preferable in that animal breeding can be carried out more systematically.

2. 2. Feeding cycle process In the present embodiment, after performing the feeding timing planning step (step1), the feeding cycle step (step2) for actually feeding the animals is performed according to the determined feeding plan (see FIG. 2). The feeding cycle step (step2) is a step of executing a feeding cycle in which feeding is repeatedly performed at specific intervals (T (int)) from the feeding start time (Ps). The feeding cycle step (step 2) may be performed while controlling the light and dark conditions (step 14) (see FIG. 3).

(A) Feeding cycle process The number of times one cycle of feeding cycle is performed within a predetermined period _P0 for raising an animal (hereinafter, also referred to as “number of cycles”) is appropriately determined. As a specific example, in FIG. 1, the maximum time shown at the time closest to 0:00 every Monday is specified as the feeding start time Ps, and a specific interval T (int) is set from the first feeding start time Ps. The feeding cycle process in which feeding is repeated four times at each feeding time P, the total of five feedings is defined as one cycle of feeding cycle C, and this feeding cycle C is performed only m times is illustrated.

When the feeding start time specifying step (step 13) is performed in the feeding planning process (step 1), the number of cycles for performing the feeding cycle is automatically determined according to the number of the specified feeding start time Ps, and the feeding start is started. When the time specifying step (step 13) is not performed, it can be arbitrarily determined within the predetermined period _P0 .
Further, as shown in FIG. 1, for example, the length of the time Z between the feeding cycle C ₁ of the first cycle and the feeding cycle C ₂ of the next one cycle is not particularly limited. The time Z is smaller than 1, preferably within 3/5, and more preferably within 2/5, as a ratio to the time X1 in which the feeding cycle C ₁ is performed in one cycle and the time X2 in which the feeding cycle C ₂ is performed. Just do it. When the feeding start time specifying step is performed, the feeding start time Ps of the number of cycles m from the predetermined first feeding start time Ps ₁ to the last feeding start time Ps _m within the predetermined period P ₀ . Accordingly, it becomes easier to perform feeding cycles C1 to _Cm with _m cycles (easily planned).
Alternatively, in the feeding cycle step, feeding can be performed at each feeding time P with a specific interval T (int) from the first feeding start time Ps ₁ until the predetermined period P ₀ is completed (that is, the number of cycles = 1).

In addition, the number of times feeding is performed at each feeding time in one feeding cycle (hereinafter, also referred to as “feeding number”) is fed from P1 to Pn at a specific interval T (int) from the feeding start time Ps. As long as feeding is performed at each time P, the feeding is not particularly limited and may be appropriately determined. For example, in FIG. 1, the number of feedings is 4 times for each feeding time P from P1 to P4 at a specific interval T (int) from the feeding start time Ps ₁ , and a total of 5 times including the first time. An example of performing _a feeding cycle C1 for feeding is shown.

Further, as described above, one or more kinds of time of the specific interval T (int) may be determined as long as the specific interval T (int) is the time synchronized with the tide fluctuation cycle T ₀ . For example, when the feeding cycle C is performed a plurality of cycles within a predetermined period P ₀ , the specific interval T (int) adopted in each feeding cycle C differs depending on whether the time T ₀ or the time 1 / 2T ₀ . You may. Even within one feeding cycle C, two types of time T ₀ and time 1 / 2T ₀ may be adopted as long as the time is synchronized with the tide fluctuation cycle T ₀ .
From the viewpoint of surely promoting the breeding of animals, it is preferable to determine one specific interval T (int). As a specific example of a preferable feeding cycle, as shown in FIG. 1, the feeding cycle C ₁ of the first one cycle is started at the first feeding start time Ps ₁ specified in advance, and the first feeding is performed. Further, feeding is performed at specific intervals T (int) at intervals of feeding time P1 to P4, and the number of feedings = 4 times. Similarly, in the next one-cycle feeding cycle C ₂ , in addition to the first feeding start time Ps ₂ , a specific interval T (int) is set, and the number of feedings = 4 feeding times P1 to P4. I do. Sequentially, the same feeding cycle is repeated C for a predetermined number of m times to feed the animals, and the animals can be raised.

(B) Light / Dark Condition Control Step In the feeding cycle step (step2), the light / dark condition during feeding may be controlled.
For example, the cycle of light and dark conditions may be controlled to synchronize with the feeding time, that is, at a specific interval. Specifically, it suffices if the combined time of the light period and the dark period corresponds to the time of the specific interval, and if the specific interval is one shaded day, the combined time of the light period and the dark period may also be used. It is preferable if the time corresponds to one shade day. Of the combinations of light and dark periods in one cycle, the time allocation for each of the light and dark periods should be close to the light and dark distribution under the natural environment, but basically it is 1: 1. preferable.
In addition, it is preferable that the light period is maintained at least during the time period when the animal is likely to eat food. Specifically, the light and dark conditions may be controlled so that the light period is maintained at least during the feeding start time and the feeding time. Alternatively, the light and dark conditions are controlled so that the light period is started shortly before the feeding start time or the feeding time, the food is ingested after the feeding start time or the feeding time, and the light period is maintained during the subsequent exercise. You may.
Specifically, the light-dark condition is the light period in the time zone including the feeding start time Ps ₁ or the feeding time P1, P2, P3, P4 after the specific interval, citing the example of the _first feeding cycle C1 in FIG. May be controlled to be maintained. Preferably, the light-dark condition is such that the light period starts about 3 hours to 30 minutes before the feeding start time Ps ₁ or each feeding time P1 to P4, and is bright until about 1/2 of the specific interval T (int) has passed. It may be controlled so that the period is maintained.
When the number of cycles of the feeding cycle C is two or more within the predetermined period P ₀ , the light / dark condition of the time Z between the feeding cycle C and the next feeding cycle C is not particularly limited. It is preferable that the light-dark condition of the time Z is maintained as long as the dark condition is maintained except for a time zone shortly before the feeding start time Ps or immediately after the feeding time P.
In this way, when the light-dark condition is controlled to be synchronized with a specific interval, the light-dark condition can be associated with the time of the specific interval in addition to the food intake, so that the circadian rhythm of the animal is stabilized and the animal grows. Can be linked to promotion.

Alternatively, the light and dark conditions during the feeding cycle process may be controlled so as to be only in the light period without turning off the lights at all. At this time, when the number of cycles of the feeding cycle step is plurality, the light-dark condition of the time Z between the feeding cycle C and the next feeding cycle C may be controlled so that the light period is maintained. In this way, by maintaining the light period for the entire period within the predetermined period _P0 for raising the animal, the activity of the animal is not hindered as much as possible, and thus it can be linked to the promotion of the growth of the animal.

[2] Animal breeding device As shown in FIG. 7, the animal breeding device of the present invention is an animal breeding device (1) provided with a feeding cycle control unit (100) for controlling an interval of feeding animals, and is a feeding cycle control. The unit (100) is a tide fluctuation information acquisition unit (111) that obtains a tide fluctuation (Ti) within a predetermined period (P ₀ ) for raising an animal, and a tide fluctuation cycle based on the tide fluctuation (Ti). A specific interval determination unit (112) that determines the time synchronized with (T ₀ ) as a specific interval (T (int)) from the feeding start time (Ps) at which the animal is started to be fed to the next feeding. It is characterized by having.
The animal breeding apparatus (1) of the present invention is an apparatus suitable for carrying out the animal breeding method of the present invention. The animal breeding apparatus (1) of the present embodiment will be described below, omitting the description overlapping with the above-mentioned explanation of the animal breeding method to the extent possible.

1. 1. Feeding cycle control unit The feeding cycle control unit 100 is a device for controlling the feeding cycle performed by the breeding device main body 200 in order to carry out the animal breeding method of the present invention, and is a tide information acquisition unit 111 for obtaining tide fluctuations. And a specific interval determination unit 112 that determines a specific interval until the next feeding based on the obtained tide fluctuation. The feeding cycle control unit 100 according to the present embodiment may further include a feeding start time specifying unit 113 for specifying the first feeding time when the feeding cycle is performed, or a breeding device during the feeding cycle. A light / dark condition control unit 114 that controls the light / dark condition in the main body 200 may be provided.

(A) Tide information acquisition unit The tide information acquisition unit 111 is a device for performing the "(a) step for obtaining tide fluctuations" described in the above animal breeding method in the feeding cycle control unit 100. It is a device for knowing the fluctuation of the tide within a predetermined period in advance. As explained in the above training method, among various tide information, information that predicts periodic fluctuations related to (relative) gravitational acceleration linked to solid tide fluctuations and / or tide levels linked to ocean tide fluctuations is provided. It is preferable to obtain it.
The tide information acquisition unit 111 may include a tide cycle calculation unit 115 for obtaining a tide fluctuation cycle. When the tidal information acquisition unit 111 calculates the relative gravitational acceleration using the tidal force prediction program, the tidal cycle calculation unit 115 further calculates the tidal fluctuation cycle T ₀ based on those calculated values. ..

(B) Specific interval determination unit The specific interval determination unit 112 is a device for performing the "(b) step of determining a specific interval" described in the above-mentioned animal breeding method, and is connected to the tide information acquisition unit 111. The time for acquiring the tide fluctuation Ti information obtained by the tide information acquisition unit 111 and synchronizing with the tide fluctuation cycle _T0 is the specific interval T until the feeding start time Ps when the animal is started to be fed. It is a device that determines as (int).

For example, as explained in the previous part of "(b) Step to determine a specific interval" above, the time from the south center of the moon to the next south center is understood as the time corresponding to one cycle of tidal fluctuation. In the case, the time corresponding to one shade day is determined as a specific interval. That is, the specific interval determination unit 112 sets the time synchronized with the shaded day as the time corresponding to the specific interval T (int) based on the prediction of the tide fluctuation Ti derived by the tide information acquisition unit 111 according to the natural law of astronomical tide. It is a device to decide.
The time corresponding to the shade day determined by the specific interval determination unit 112 may be one shade day (24.8 hours), and is a time suitable for feeding various animals as needed. You may. Further, the specific interval determination unit 112 may have a function of acquiring other information in addition to the tide information guided by the natural law of astronomical tide. For example, the tide fluctuation Ti obtained by executing a predetermined program by the tide information acquisition unit 111 or the calculated value of the fluctuation cycle obtained by the tide cycle calculation unit 115 is confirmed, and the interval is determined as a specific interval of 24.8 hours. It may be a device having a function of confirming that the difference between the two is small between the numerical value and the numerical value.

Further, as described in the latter part of the step (b) for determining the specific interval, for example, when the tidal force prediction program is used to calculate the fluctuation of the relative gravity acceleration, the specific interval determination unit 112 uses the tidal force. Based on the tidal fluctuation Ti obtained by the force prediction program (tidal information acquisition unit 111) or the calculated value of the fluctuation cycle obtained by the tidal cycle calculation unit 115, the time to synchronize with the tidal fluctuation cycle is set at a specific interval. It is a device that determines as T (int). Regarding ocean tides, even when calculating tide fluctuations by referring to the tide level prediction table published by related organizations, or when referring to the calculated values of radial displacement of the sea surface using GOTIC2's ocean tide prediction program. , The same is true.

(C) Feeding start time specifying unit The feeding start time specifying unit 113 is a device for performing the “(c) feeding start time specifying step” described in the above animal breeding method, and is preferably a tide information acquisition unit 111. It is a device that acquires tide fluctuation Ti information from and specifies the feeding start time Ps based on the tide fluctuation Ti information.
The feeding start time specifying unit 113 may be a device that arbitrarily selects the feeding start time within the predetermined period _P0 without any particular limitation, but as described above, for example, the obtained tide fluctuation is maximized. The device may specify one or more maximum time selected from the maximum time including the indicated time as the feeding start time.
Further, the feeding start time specifying unit 113 may have a function of specifying the number of times of feeding repeated at a specific interval after the start of feeding. By specifying the number of feedings, the time required to perform one feeding cycle is specified. Since it is possible to specify multiple feeding start times, that is, to clarify the time for performing one feeding cycle when the number of cycles is multiple, the feeding cycle of multiple cycles is continuous within the entire predetermined period for raising the animal. You can effectively plan the breeding of animals as it is done in.

(D) Light-dark condition control unit The light-dark condition control unit 114 is a device for performing the "(b) light-dark condition control step" described in the above-mentioned animal breeding method, and is a breeding device main body during the feeding cycle process. It is a device that controls the light / dark condition of the predetermined lighting device 214 in the unit 200.
Specifically, the light / dark condition control unit 114 may be a device that is connected to the feeding start time specifying unit 113 and acquires information on the specific interval and the feeding start time via the feeding start time specifying unit 113. It may be a device connected to the specific interval determination unit 112 and the feeding start time specific unit 113 and to acquire information on the specific interval and the feeding start time from each. The light / dark condition control unit 114 grasps the plan of the period for performing the feeding cycle process within the predetermined period _P0 , and the inside of the breeding device main body 200 for accommodating the animal breeding container (water tank 22 in FIG. 7) is predetermined. The ON / OFF of the lighting device 214 is controlled so as to maintain the dark condition.

Hereinafter, the present invention will be described in more detail with reference to Examples.
In this example, Japanese soft-shelled turtles produced in Japan were used as the animals according to the present invention, and feeding was performed in a feeding cycle according to the fluctuation of the tide, and a breeding experiment for raising the animals was conducted. The results of a breeding experiment conducted using the animal breeding apparatus ₁ described below within a predetermined period P0 at a predetermined experimental place will be described.

(1. Animal breeding device)
As shown in FIG. 7, the animal breeding device 1 of the embodiment has a feeding cycle control unit 100 for controlling a feeding cycle for feeding the Japanese soft-shelled turtle 2, and a breeding device main body 200 for accommodating a water tank 22 for releasing the Japanese soft-shelled turtle 2. And prepare.
The feeding cycle control unit 100 includes a tide information acquisition unit 111 for acquiring tide information, a specific interval determination unit 112 for determining an interval between a predetermined feeding time and the next feeding time, and the first in one feeding cycle. A feeding start time specifying unit 113 for specifying a feeding start time, and a light / dark condition control unit 114 for controlling light / dark conditions in the breeding device main body 200 are provided.

The tide information acquisition unit 111 is a tide prediction system “GOTIC2” (http://www.mizu.nao.ac.jp/staffs/nao99/).
The specific interval determination unit 112 is a device that processes the specific interval T (int) as 24.8 hours based on the determination that one shade day is one cycle of the tidal fluctuation.
The feeding start time specifying unit 113 reads out the tide fluctuation Ti, that is, the calculated value of the relative gravitational acceleration and the data at the time of showing the calculated value from the tide information acquisition unit 111 (GOTIC2), and specifies the feeding start time. It is a device. Further, the feeding start time specifying unit 113 is a device that reads out from the specific interval determining unit 112 that the specific interval is determined to be 24.8 hours, and specifies the last feeding time according to the number of feedings.
The light / dark condition control unit 114 synchronizes with the feeding cycle as necessary by grasping the feeding start time via the feeding start time specifying unit 113 and the specific interval via the specific interval determining unit 112. It is a device configured to control the light and dark conditions in a cycle. The light / dark condition control unit 114 is a device configured to maintain the light / dark condition in the light period during the feeding cycle, if necessary.
In FIG. 7, reference numeral 214 is a lighting device, and the inside of the growing device main body 200 is illuminated (maintained in the light period) or turned off (maintained in the dark period) according to the control of the light / dark condition control unit 114. Reference numeral 211 is a feeding device, and feeds the food 21 to the Japanese soft-shelled turtle 2 based on the control of the feeding cycle control unit 100.

(2. Animal breeding method-process of planning feeding time)
As shown in FIG. 3, the animal breeding device 1 is used to breed animals.
The tide information acquisition unit 111, that is, the tide prediction system "GOTIC2", inputs the latitude and longitude of the implementation base (Nagoya City, Aichi Prefecture), and the relative value of gravitational acceleration within a predetermined period at the experimental site [relative gravitational acceleration]. (RGA)] is calculated over time. As a result, information on the fluctuation Ti of the solid tide within the predetermined period _P0 in which the animal is to be raised is acquired (step 11). Specifically, the tide prediction system "GOTIC2" calculates the relative gravitational acceleration every hour along the time axis within a predetermined period, and stores the calculated value and the data at the time of showing the calculated value. ..
The specific interval determination unit 112 processes the specific interval T (int) as 24.8 hours (step 12).

The feeding start time specifying unit 113 reads and refers to the tide fluctuation Ti, that is, the calculated value of the relative gravitational acceleration and the data at the time of showing the calculated value from the tide information acquisition unit 111 (GOTIC2), and is relative. Extract the maximum period including the (instantaneous) time when the gravitational acceleration shows the maximum. Then, one or more maximum periods selected from the extracted maximum periods according to the breeding convenience of the breeder are specified as the feeding start time (step 13). Based on the breeding convenience of the breeder, it is decided to start feeding every Monday and to carry out the feeding work from Monday to Friday at specific intervals. Based on this determination, the number of cycles m of the feeding cycle C performed within the predetermined period P0 and the number of _feedings n of feeding within the feeding cycle C of one cycle are determined as follows, and the feeding timing planning process is performed. ..

From the maximum period extracted from the tide fluctuation Ti, the breeder selects one of the maximum periods that basically appears twice a day every Monday as the feeding start time, which matches the breeding convenience of the breeder. do. Based on the selection, the feeding start time specifying unit 113 specifies the maximum time of each Monday as the feeding start time Ps. Based on the fact that the feeding start time Ps is every Monday, the number of cycles m of the feeding cycle in which the animal is fed is specified according to the number of Mondays appearing within the predetermined period _P0 .

Further, the feeding start time specifying unit 113 reads from the specific interval determining unit 112 that the specific interval is determined to be 24.8 hours. If feeding is performed every 24.8 hours based on the decision that the feeding operation is performed from Monday to Friday, the last feeding time P is specified. That is, the number of feedings n for feeding in one feeding cycle is determined.

(3. Animal breeding method-feeding cycle process)
Before starting the feeding cycle process, determine the cycle of light and dark conditions during the feeding cycle process. In the feeding cycle step, the cycle of light and dark conditions inside the breeding apparatus main body 200 is synchronized with a specific interval of 24.8 hours, which is half the time, that is, 12.4 hours in the light period and 12.4 hours in the dark period. Is set to be controllable. In the feeding cycle process, the light and dark conditions are also set so that they can be controlled only in the light period. The light / dark condition control unit 114 is set so that one of the light / dark conditions can be executed as needed.

As described above, the first feeding is started on the first Monday of the predetermined period and at the first feeding start time Ps ₁ . After that, feeding is performed every 24.8 hours, and further, in this 24.8 hour cycle, feeding is repeated until the predetermined number of feedings is n times, that is, until Friday of the first week. After the first feeding cycle C ₁ is completed, the second feeding cycle C ₂ is started on Monday of the second week at the second feeding start time Ps ₂ . Then, the feeding cycle C is started every Monday at the feeding start time Ps, and feeding is repeated until the predetermined number of cycles is m (see FIG. 1).
Specifically, the breeding experiments of Examples 1 to 3 were carried out. In addition, as a comparative example, a breeding experiment was conducted with a specific interval of 24 hours, and the breeding method according to this example was evaluated.

<< Example 1 >>
In Example 1, 25 Japanese soft-shelled turtles produced in Japan one month after the blinking were placed in the aquarium 22 and the animals to be fed in a 24.8 hour cycle were bred.
The prescribed period for growing Japanese soft-shelled turtles was set to 3 months, and feeding was planned for 5 consecutive days from Monday to Friday, and the feeding cycle was repeated for 2 days, Saturday and Sunday.
In order to obtain information on tide fluctuations that fluctuate during the three months of the predetermined period for raising Japanese soft-shelled turtles, the tide prediction program "GOTIC2J (http://www.mizu.nao.ac.jp/staffs/nao99/)" is used. The calculated value of the relative gravitational acceleration was obtained. From the obtained tidal fluctuation Ti information, the time when the relative gravitational acceleration showed the maximum was extracted. A time that is easy to feed during the day was selected and specified as the feeding start time. The light and dark conditions of the water tank 22 were controlled so as to always maintain the light period when the lighting device 214 was turned on.
<< Comparative Example 1 >>
Animals were raised that differed from Example 1 in that they were fed in a 24-hour cycle.
FIG. 8 specifically shows the feeding cycle actually performed in Example 1 and Comparative Example 1.
In the figure, the feeding cycle steps according to the first embodiment are designated by the reference numerals of the feeding start time Ps ₁ and the feeding times P1 to P4, but the same applies to the feeding cycle step according to the comparative example 1. It is expressed by adding "'" to the sign of.

<< Example 2 >>
In Example 2, animals different from those in Example 1 were raised in that 15 Japanese soft-shelled turtles were placed in three aquariums 22 and that the predetermined period for raising Japanese soft-shelled turtles was 2 months.
In addition, the light and dark conditions when performing the feeding cycle process are controlled so that the light period is 12.4 hours from 1 hour before the feeding start time or the feeding time, and the dark period is 12.4 hours thereafter. Animals different from those in Example 1 were bred. The light-dark condition of the period between the feeding cycle and the next feeding cycle is controlled to maintain the dark period so that the extinguishing time one hour before the feeding on Monday, which is the feeding start time, is maintained for at least 24 hours. rice field.
<< Comparative Example 2 >>
Animals were bred differently from Example 2 only in that they were fed in a 24-hour cycle.
Further, the light and dark conditions at the time of performing the feeding cycle step are controlled so that the light period is 12 hours from 1 hour before the feeding start time or the feeding time, and the dark period is 12 hours after that. We raised different animals. The light-dark condition between the feeding cycle and the next feeding cycle was controlled to maintain the dark period so that the extinguishing time 1 hour before the feeding on Monday, which is the start time of feeding, was maintained for at least 24 hours.
FIG. 9 specifically shows the feeding cycle actually performed in Example 2 and Comparative Example 2.

<< Example 3 >>
In Example 3, an animal different from that of Example 1 was bred in that 11 Japanese soft-shelled turtles produced in Japan 4 months after hatching were placed in two aquariums 22 each. ,
The light and dark conditions of the water tank 22 were controlled so as to maintain the light period in which the lights were constantly lit.
<< Comparative Example 3 >>
Animals were raised that differed from Example 3 only in that they were fed in a 24-hour cycle.
In Example 3, since the feeding cycle and the light and dark conditions are the same as those in Example 1, FIG. 8 of Example 1 is used to specifically show the feeding cycle.

(4. Evaluation of the breeding experiment of the example)
The weight of Japanese soft-shelled turtle was measured before and after the breeding experiment of Examples 1 to 3 and Comparative Examples 1 to 3, and the weight gain rate was calculated. The weight gain rate was calculated from the following formula.
Weight gain rate (%) = (weight after breeding-weight before breeding) / weight before breeding x 100
Table 1 shows the obtained weight gain rate (%) together with the breeding experimental conditions of Examples 1 to 3 and Comparative Examples 1 to 3.

Hereinafter, specific effects found by performing the animal breeding method of the present embodiment using the animal breeding apparatus 1 of the present embodiment will be described.
(1) In the animal breeding method carried out in Examples 1 to 3, the tide fluctuation within the planned breeding period was obtained before the feeding cycle step was performed, and as shown in FIGS. 8 and 9, the tide fluctuation cycle T. 24.8 hours synchronized with ₀ was determined as a specific interval for feeding Japanese soft-shelled turtles. Therefore, before performing the feeding cycle step, the feeding time P1, P2. I was able to easily plan P3 and P4. Furthermore, since feeding cycle C in which feeding was repeated every 24.8 hours, which was a determined specific interval, was performed, evaluation results capable of promoting the growth of Japanese soft-shelled turtles were obtained as shown in Table 1.
(2) The 24.8 hours defined as the specific interval is the time corresponding to one shade day. By repeating feeding in the 24.8 hour cycle, as shown in Table 1, evaluation results that can surely promote the growth of Japanese soft-shelled turtles were obtained.
(3) Further, in each embodiment, the maximum time Pm in which the tide fluctuation Ti shows the maximum is specified in advance as the feeding start time Ps for starting feeding to the Japanese soft-shelled turtle. As shown in Table 1, the evaluation results that can surely promote the growth of Japanese soft-shelled turtles were obtained by performing the feeding cycle step according to the feeding plan in which the maximum time Pm is set as the feeding start time Ps.

(4) Further, in particular, as shown by the result of Example 1, when the feeding cycle step is performed under the light and dark conditions only in the light period, as is clear from the comparison with Example 2 in the light and dark conditions including the dark period. The weight gain rate was higher in Example 1. That is, in the average weight gain rate per month, the weight gain rate of Example 1 is about 1.25 times higher than that of Example 2, and the growth of Japanese soft-shelled turtle can be promoted more reliably. I understood.
(5) In particular, as shown in Example 2, the light and dark conditions when performing the feeding cycle step are 12.4 hours in the light period + 12.4 hours in the dark period based on 24.8 hours, which is a specific interval. When controlled to, it was possible to promote the growth of Japanese soft-shelled turtles in a healthy manner. That is, since the light-dark condition can be associated with 24.8 hours at a specific interval in addition to the timing of ingesting food, it is easy to maintain the light period at the time of eating, and it becomes easy to fall asleep in the dark period after eating. It is thought that the circadian rhythm is further stabilized and health is maintained.
Further, it was shown that the weight gain rate of Example 2 was lower than that of Example 1, but the weight gain rate was significantly higher than that of Comparative Example 2 in the 24-hour cycle. This is considered to be one of the proofs that the growth promoting effect is associated with feeding in a 24.8 hour cycle rather than simply relying on the feeding environment that maintains the light period.
(6) In Examples 1 to 3, fluctuations in (relative) gravitational acceleration linked to solid tides were used as means for embodying fluctuations in tides. Therefore, it is considered that the calculation accuracy of the tidal fluctuation could be improved because the solid tide is mainly based on the topography of the destination.

(7) In this example, Japanese soft-shelled turtle was used as an animal to be raised and showed the effect of promoting growth. However, in terms of biological classification, soft-shelled turtles are close to amphibian, so they are close to fish and bird. near. Since the influence of tides is considered to affect a wide range of organisms on the earth, it is considered that the effects of the present invention are not limited to animals belonging to these.
(8) In particular, if the animal is a commercial animal and its breeding is controlled by human hands, it is cultivated, or a market is formed by its commercial transactions, there is a great possibility of improving productivity. Therefore, it is economically preferable.
Further, for example, in Example 1, the weight gain rate was increased by 1.6 times or more after 3 months of breeding as compared with Comparative Example 1, and the degree of promotion of growth was a remarkable effect exceeding expectations. rice field. Since animals can be promoted to grow faster with the same amount of food, the total amount of food to be fed before reaching the shipping weight can be reduced, and the cost of soft-shelled turtle farming can be significantly reduced. In other words, compared to general aquaculture methods, the weight can be increased even during the same growing period, so it is possible to easily increase the production of Japanese soft-shelled turtle meat. In addition, considering the remarkable growth promoting effect that exceeds expectations, it is considered that the digestion and absorption efficiency by the diet is changed by performing the feeding cycle step in the 24.8 hour cycle synchronized with the tide fluctuation cycle _T0 . In this case, expectations are high for improving the ingredients and taste of Japanese soft-shelled turtle meat.
Further, in the comparison between Example 1 and Example 3, it is better to raise the juvenile turtle one month after hatching in the feeding cycle according to this example than to raise it by this example for the first time four months after hatching. It was found that the weight gain rate was high and the breeding of Japanese soft-shelled turtles was promoted.
In this way, it is expected that the mortality rate will be further reduced because the younger turtles have a greater effect of promoting growth. For example, as explained at the beginning, in the cultivation of soft-shelled turtles, it is necessary to move the breeding grounds such as aquariums according to the growth stage, and especially for juvenile turtles, the movement causes a great deal of stress and the mortality rate increases. It may be expensive. Even in light of the fact that the survival rate of juvenile turtles that have just hatched is not high, it is thought that making a larger body at a younger age gives the juvenile turtle vitality.
As described above, the breeding method of this embodiment can increase the survival rate of Japanese soft-shelled turtle and improve its productivity.
As shown in this example, the breeding method of this example is when 1/75 to 2/3 of the time required for weight gain and growth after hatching until the time of shipment is scheduled. , More preferably, it is performed at the time of 1/50 to 1/2 young bells. Especially for soft-shelled turtles, it is preferably performed at 1/150 to 2/3, preferably 1/60 to 1/2.

As described above, according to the animal breeding method and breeding apparatus of the present invention, in various fields including animal farming, the breeding efficiency of raising animals is improved, the breeding period is shortened, and the breeding cost is suppressed. Can be done.
In addition, the animal breeding apparatus of the present invention predicts tide fluctuations using the tide information acquisition unit before starting breeding of animals. After grasping the tide fluctuations and deciding the time to start feeding and the specific interval until the next feeding, the animals can be raised while feeding as usual. Therefore, since a detection device that acquires actual information over a predetermined period of breeding is not required, the inconvenience of exaggerated system operation as in the conventional technique can be eliminated, and the daily burden for breeding animals can be reduced. Can be reduced.

Claims (12)

It is planned to obtain the tide fluctuation during a predetermined period for raising the animal, and to determine the time synchronized with the tide fluctuation cycle as a specific interval from the feeding start time when the animal is to be fed to the next feeding. Feeding time planning process and
An animal characterized by performing a feeding cycle step of starting feeding at the feeding start time after performing the feeding timing planning step, and repeating feeding at intervals of the specific intervals from the feeding start time. Training method. The method for raising an animal according to claim 1, wherein the specific interval is a time corresponding to a shade day. In the feeding timing planning step, after obtaining the fluctuation of the tide, one or more maximum timings selected from the maximum timing including the time when the fluctuation of the tide shows the maximum is specified as the feeding start time. The method for raising an animal according to claim 1 or 2. The method for raising an animal according to any one of claims 1 to 3, wherein in the feeding cycle step, control is performed so that the light and dark conditions are limited to the light period. The method for raising an animal according to any one of claims 1 to 3, wherein in the feeding cycle step, the light and dark conditions are controlled in a cycle synchronized with the specific interval. The animal according to any one of claims 1 to 5, wherein the tide fluctuation is obtained by referring to at least one of a gravitational acceleration that fluctuates in conjunction with a solid tide and a tide level that fluctuates in conjunction with an ocean tide. Training method. The method for raising an animal according to any one of claims 1 to 6, wherein the animal belongs to a fish class, a bird class, an amphibian class, or a reptile class. The animal according to claim 7, wherein the animal is a commercial animal, and the feeding cycle step is performed when the animal is 1/50 to 1/2 of the time required to grow until it is scheduled to be shipped after hatching. Training method. An animal breeding device equipped with a feeding cycle control unit that controls the feeding interval of animals.
The feeding cycle control unit
The tide fluctuation information acquisition unit that obtains the tide fluctuation within a predetermined period for raising the animal, and the tide fluctuation information acquisition unit.
A specific interval determination unit that determines the time synchronized with the tide fluctuation cycle based on the tide fluctuation as a specific interval from the feeding start time to start feeding the animal to the feeding is provided. An animal breeding device characterized by being present. The animal breeding apparatus according to claim 9, wherein the feeding cycle control unit further includes a light / dark condition control unit that maintains a light period during the feeding cycle. The animal breeding apparatus according to claim 9, wherein the feeding cycle control unit further includes a light / dark condition control unit that controls light / dark conditions in a cycle synchronized with the feeding cycle. The feeding cycle control unit further includes a feeding start time specifying unit that specifies the feeding start time based on the tide fluctuation obtained by the tide fluctuation information acquisition unit.
Of claims 9 to 11, the feeding start time specifying unit specifies one or more maximum times selected from the maximum times including the time when the tide fluctuation shows the maximum as the feeding start time. The animal breeding device according to any one of the items.

Images