JP2020010610A - Illumination system and diurnal poultry breeding method - Google Patents

Abstract

To provide an illumination system capable of efficiently increasing body sizes of diurnal poultry.SOLUTION: An illumination system 10 is used for breeding diurnal poultry. The illumination system 10 includes a light source unit 22 for emitting a first light whose emission peak wavelength is 560-590 nm, and a second light whose emission peak wavelength is 450-490 nm, and a control unit 31 for illuminating the first light to a breeding region 70 of the diurnal poultry in a first half of breeding, and illuminating the first light and the second light to the breeding region 70 in a second half of breeding by controlling the light source unit 22.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lighting system used for breeding daytime poultry and a method of breeding daytime poultry.

  The breeding of chickens is being actively carried out as an industry in countries around the world including Japan. For example, Patent Literature 1 discloses a breeding method in which lighting in a poultry house is brightened in an early stage of growing and gradually darkened by the time of shipment.

JP 2009-171866 A

  In breeding daytime poultry such as broilers, which are meat chickens, it is required to efficiently increase the number of daytime poultry.

  The present invention provides a lighting system capable of efficiently increasing the number of diurnal poultry, and a method of breeding diurnal poultry.

  The lighting system according to one embodiment of the present invention is a lighting system used for breeding daytime poultry, in which the first light having an emission peak wavelength of 560 nm to 590 nm and the emission peak wavelength of 450 nm to 490 nm. A light source unit that emits the following second light, and by controlling the light source unit, irradiates the first light to the breeding area of the diurnal poultry in the early stage of breeding, and the first light in the late stage of breeding. A control unit for irradiating the breeding area with light and the second light.

The method of breeding daytime poultry according to one embodiment of the present invention is a light source unit that emits first light having an emission peak wavelength of 560 nm to 590 nm and second light having an emission peak wavelength of 450 nm to 490 nm. Irradiating the first light to the breeding area of diurnal poultry in the early stage of breeding, and irradiating the first light and the second light to the breeding area in the second half of the breeding Breeding methods.

  According to the lighting system and the method of breeding daytime poultry of the present invention, daytime poultry can be efficiently increased.

FIG. 1 is a diagram illustrating an outline of a lighting system according to an embodiment. FIG. 2 is a block diagram illustrating a functional configuration of the lighting system according to the embodiment. FIG. 3 is a diagram illustrating a first example of the emission spectrum of the growing light. FIG. 4 is a diagram illustrating a second example of the emission spectrum of the growing light. FIG. 5 is a diagram illustrating a first example of an emission spectrum of blue light emitted from a blue light source. FIG. 6 is a diagram illustrating a second example of the emission spectrum of blue light emitted from the blue light source. FIG. 7 is a diagram illustrating an example of an emission spectrum of white light emitted from a white light source. FIG. 8 is a schematic diagram illustrating light emission control according to the first embodiment. FIG. 9 is a schematic diagram illustrating light emission control according to the second embodiment. FIG. 10 is a schematic diagram illustrating light emission control according to the third embodiment. FIG. 11 is a schematic diagram illustrating light emission control according to Comparative Example 1. FIG. 12 is a schematic diagram illustrating light emission control according to Comparative Example 2. FIG. 13 is a first diagram showing changes in the weight of chickens. FIG. 14 is a second diagram (an enlarged view of the latter half of the first diagram) showing changes in the weight of the chicken. FIG. 15 is a flowchart of light emission control according to the second embodiment. FIG. 16 is a schematic diagram illustrating light emission control according to the first modification of the second embodiment. FIG. 17 is a schematic diagram illustrating light emission control according to a second modification of the second embodiment. FIG. 18 is a schematic diagram illustrating light emission control according to a third modification of the second embodiment. FIG. 19 is a schematic diagram illustrating light emission control according to a fourth modification of the second embodiment. FIG. 20 is a schematic diagram illustrating light emission control according to a fifth modification of the second embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. Each of the embodiments described below shows a comprehensive or specific example. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and do not limit the present invention. Further, among the components in the following embodiments, components not described in the independent claims are described as arbitrary components.

  Each drawing is a schematic diagram, and is not necessarily shown exactly. In each of the drawings, substantially the same components are denoted by the same reference numerals, and duplicate description may be omitted or simplified.

  In the following embodiments, the expression “identical” does not mean exact identical but means substantially identical. For example, a case where there is an error of about several% is also included in “identical”. The same applies to the expression “constant”.

(Embodiment)
[Constitution]
First, the configuration of the lighting system according to the embodiment will be described. FIG. 1 is a diagram illustrating an outline of a lighting system according to an embodiment. FIG. 2 is a block diagram illustrating a functional configuration of the lighting system according to the embodiment.

  As shown in FIG. 1, the lighting system 10 according to the embodiment is a lighting system used for breeding daytime poultry. The lighting system 10 is more specifically a lighting system for poultry farming. is there. The lighting system 10 is installed in, for example, a poultry house 60. As shown in FIGS. 1 and 2, the lighting system 10 includes a lighting device 20 and a control device 30. Hereinafter, each device will be described in detail.

[Lighting device]
First, the lighting device 20 will be described in detail. The lighting device 20 is installed on the ceiling of the poultry house 60 and illuminates the inside of the poultry house 60. At least one lighting device 20 may be provided on the ceiling of the poultry house 60, and a plurality of lighting devices 20 may be provided. Specifically, the lighting device 20 irradiates light to a rearing area 70 (floor of the poultry house 60) where a plurality of chickens are reared. Thereby, the chickens in the poultry house 60 are irradiated with light.

  The breed of chicken bred in the poultry house 60 is, for example, a broiler (more specifically, chunky, cobb, or arbor aka), but may be another breed such as a so-called local chicken.

  The lighting device 20 includes a light control circuit 21 and a light source unit 22. The dimming circuit 21 is a circuit that supplies power to the light source unit 22 according to a control signal output from the control device 30 (control unit 31). The dimming circuit 21 includes, for example, a chopper control circuit. The control unit 31 changes a current supplied to the light source unit 22 by switching a switching element included in the dimming circuit 21 (chopper control circuit) according to a control signal. The light control circuit 21 can independently supply power (current) to each of the light sources of the growing light source 22g, the blue light source 22b, and the white light source 22w included in the light source unit 22.

  The growth light source 22g included in the light source unit 22 emits light having an emission peak wavelength of 560 nm or more and 590 nm or less, for example. Hereinafter, this light is also referred to as “growing light”. The growing light is an example of the first light, and is, for example, monochromatic light. Specifically, the growth light may be green light (yellow green light) having an emission peak wavelength of 560 nm or more and 570 nm or less, or yellow light having an emission peak wavelength of 570 nm or more and 590 nm or less. Note that the growing light has no emission peak in the wavelength range of 505 nm or more and 545 nm or less. 3 and 4 are diagrams illustrating examples of the emission spectrum of the growing light.

  The growth light source 22g is, specifically, a light emitting module using an LED configured to emit the growth light, but the specific mode of the growth light source 22g is not particularly limited.

  The blue light source 22b included in the light source unit 22 is a light source that emits blue light. The blue light source 22b emits blue light (monochromatic light) having an emission peak wavelength of 450 nm or more and 495 nm or less, for example. FIGS. 5 and 6 are diagrams illustrating an example of the emission spectrum of blue light emitted from the blue light source 22b. Blue light is an example of second light having a different chromaticity from the first light. The blue light source 22b is specifically a light emitting module using a blue LED, but the specific mode of the blue light source 22b is not particularly limited.

  The white light source 22w included in the light source unit 22 is, for example, a light source using an LED and emits white light. White light is another example of the second light having a different chromaticity from the first light. FIG. 7 is a diagram illustrating an example of an emission spectrum of white light emitted from the white light source 22w.

  The white light emitted from the white light source 22w may be white on the locus of the black body or white off the locus of the black body. Further, the color temperature of the white light emitted from the white light source 22w is not particularly limited. In the embodiment, the color temperature of the white light emitted from the white light source 22w is a relatively high color temperature of 5000 K to 8000 K.

  The white light source 22w is, specifically, a COB (Chip On Board) type light emitting module or an SMD (Surface Mount Device) type light emitting module. Further, the white light source 22w may be a remote phosphor type light emitting module. The white light source 22w may be an incandescent lamp, a fluorescent lamp, or the like.

  As described above, the illumination device 20 (the light source unit 22) emits the growing light having the emission peak wavelength of 555 nm or more and 595 nm or less, and the blue light or the white light having a different chromaticity from the growing light.

[Control device]
Next, the control device 30 will be described. The control device 30 is a controller that controls one or more lighting devices 20. The control device 30 includes a control unit 31, a storage unit 32, and a clock unit 33.

  The control unit 31 controls the light source unit 22 of the lighting device 20. Specifically, the control unit 31 can independently control the growth light source 22g, the blue light source 22b, and the white light source 22w. That is, the control unit 31 can selectively irradiate the breeding area 70 with the growing light, the blue light, and the white light. The control of the control unit 31 includes lighting, turning off, and dimming (adjustment of brightness in a lighting state).

  The control unit 31 specifically includes a DMX control circuit (light control circuit) for controlling the light output of the light source unit 22 and the like. The control unit 31 may be configured by a processor, a microcomputer, or the like.

  The storage unit 32 is a storage device that stores a control program executed by the control unit 31 when the control unit 31 includes a processor or a microcomputer. The storage unit 32 is realized by, for example, a semiconductor memory.

  The timer 33 measures time. The clock unit 33 measures, for example, the current date and time (including the date). The clock unit 33 is specifically a timer circuit, a real-time clock IC, or the like, but may be in any form. Time information indicating the time measured by the timer 33 is output to the controller 31, and the controller 31 controls the light source 22 according to the time measured by the timer 33.

[Example 1]
The inventors have found that by irradiating the breeding area 70 with light having an emission peak wavelength of 560 nm or more and 590 nm or less during the breeding period of chickens, it is possible to promote the gain of chickens. Hereinafter, Examples 1 to 3 and Comparative Examples 1 and 2 using the illumination system 10 will be described in detail. FIG. 8 is a schematic diagram illustrating light emission control according to the first embodiment.

  In FIG. 8, the vertical axis indicates the light intensity (pdu). The light intensity is an example of an index indicating the brightness of the light source unit 22. 1 (pdu) is a light intensity equivalent to 1 lx (lux) of an incandescent lamp in a chicken eye. In FIG. 8, the abscissa indicates the breeding period (days).

  First, the training period will be described. The breeding period of meat chickens such as broilers is generally about 49 days. In the embodiment, three weeks (from the 0th day to the 21st day) immediately after the start of the cultivation in the 49-day cultivation period are defined as the first cultivation period. The ages of chickens are 1 from day 0 to day 7, 2 from day 8 to day 14, and 3 from day 15 to day 21.

  Further, of the breeding period, the four weeks immediately after the first breeding period (from the 22nd day to the 49th day) are defined as the second breeding period. The latter period is an example of the second period. The ages of the chickens are 4 from the 22nd day to the 28th day, 5 from the 29th day to the 35th day, 6 from the 36th day to the 42nd day, and 7 from the 42th day to the 49th day. is there.

  Note that the starting point (0 day) of the breeding period may be 2 days or 3 days after the birth of the chick. For example, the weight of the broiler at the start of the growing period is about 40 g, and the weight of the broiler at the end of the growing period is about 3000 g.

  The boundary between the first breeding period and the second cultivation period need not be strictly determined as described above, and may belong to, for example, the 19th to 24th days of the breeding period. The breeding period may be a period until the chicken reaches a predetermined weight. That is, the raising period may be a fluid period.

  Next, light emission control according to the first embodiment will be described. As shown in FIG. 8, in Example 1, at least the rearing area 70 is irradiated with the breeding light in the early stage of the breeding, and the rearing area 70 is selectively irradiated with the blue light in the later stage of the breeding. The growth light is light emitted from the growth light source 22g, and the blue light is light emitted from the blue light source 22b. The average light intensity of the growing light in the early growth period varies depending on the period, but the average light intensity of the blue light in the latter growth period is about 10 (pdu).

  In the first embodiment, the first breeding period is divided into three periods: a period T11, a period T12, and a period T13. In the first embodiment, the average light intensity of the growing light in the period T11 is about 20 (pdu), and the average light intensity of the growing light in the period T12 following the period T11 is 10 (pdu). u.). In the first embodiment, the average light intensity in the period T11 is 1.4 times or more the average light intensity in the period T12.

  Hereinafter, the light emission control performed in the period T11 is also described as boost light emission control, and the period in which the boost light emission control is performed is also described as a boost period. The light emission control performed in the period T12 is also described as normal light emission control.

  As described above, in the first embodiment, the control unit 31 irradiates the breeding area 70 with the breeding light having the first brightness (light intensity in the period T11), and then controls the second brightness that is darker than the first brightness. The breeding area 70 is irradiated with growing light having a light intensity (light intensity in the period T12). Further, the first brightness is at least 1,4 times brighter than the second brightness.

  In the first embodiment, the period T11 is three days from the 0th day to the 3rd day. In the first embodiment, the period T12 is six days from the fourth day to the ninth day. As described above, the length of the period in which the breeding light having the first brightness is irradiated on the breeding area 70 is shorter than the length of the period in which the breeding light having the second brightness is irradiated on the breeding area 70.

  A period T13 following the period T12 is a period (adaptation period) for adapting the chicken from the environment irradiated with the growing light to the environment irradiated with the blue light. The period T13 is an example of a first target period. In the period T13, blue light is irradiated in addition to the growth light. That is, light in which the growth light and the blue light are mixed is irradiated. The period T13 is 12 days from the 10th day to the 21st day in the first embodiment. Hereinafter, the light emission control performed in the period T13 is also described as mixed light emission control.

  In the period T13, the growth light and the blue light are irradiated such that the average light intensity of the growth light and the blue light is about 10 (pdu). For example, the light intensity of the growing light decreases with time, and the light intensity of the blue light increases with time. In the period T13, the growth light and the blue light may be irradiated at a fixed ratio (for example, 1 to 1).

[Example 2]
Next, light emission control according to the second embodiment will be described. FIG. 9 is a schematic diagram illustrating light emission control according to the second embodiment.

  In the second embodiment, the first breeding period is divided into two periods: a first period T21 and a second period T22 following the first period T21. The first period T21 is, for example, 9 days from day 0 to day 9, and the second period T22 is 12 days from day 10 to day 21.

  In the first period T21, the rearing area 70 is selectively irradiated with growing light. The average light intensity of the growing light in the first period T21 is about 10 (pdu).

  In the second period T22 and the latter stage of growth, blue light is irradiated in addition to the growth light. That is, light in which the growth light and the blue light are mixed is irradiated.

  Each of the average light intensity of the growing light and the average light intensity of the blue light in the second period T22 is about 5 (pdu). The average light intensity of the growing light in the latter stage of growth is about 3 (pdu), and the average light intensity of the blue light in the latter stage of growth is about 7 (pdu).

  As described above, in the second embodiment, the brightness of the growing light applied to the breeding area 70 is brighter in the first period T21 than in the second period T22, and is brighter in the second period T22 than in the latter period. That is, the brightness of the growing light becomes darker as the period elapses.

  On the other hand, in the second embodiment, the brightness of the blue light applied to the breeding area 70 becomes brighter as the period elapses. That is, the brightness of the blue light applied to the breeding area 70 is brighter than the second period T22 in the later stage of breeding.

  In the second embodiment, the total brightness of the light applied to the breeding area 70 is substantially constant regardless of the period. That is, the combined brightness of the first light and the second light applied to the breeding area 70 is the same in the second period T22 and in the latter stage of the breeding.

  According to the light emission control according to the second embodiment, by irradiating the growth light during both the first growth period and the second growth period, compared with the light emission control in which the growth light during irradiation is turned off at a certain time, It is possible to suppress giving a strong light stimulus to the chicken.

[Example 3]
Next, light emission control according to the third embodiment will be described. FIG. 10 is a schematic diagram illustrating light emission control according to the third embodiment.

  In the third embodiment, at least the breeding area 70 is irradiated with the breeding light in the early stage of the breeding, and the breeding area 70 is selectively irradiated with the blue light in the late breeding stage. The average light intensity of the growth light in the first growth period is almost constant except for the adaptation period. The average light intensity of the blue light in the latter stage of growth is about 10 (pdu).

  In the light emission control according to the third embodiment, no boost period is provided in the light emission control according to the first embodiment. The light emission control according to the third embodiment is almost the same as the light emission control according to the first embodiment except that a boost period is not provided. Hereinafter, differences from the first embodiment will be described.

  In the third embodiment, the first breeding period is divided into two periods, a period T31 and a period T32. In the third embodiment, the average light intensity of the growing light in the period T31 is about 10 (pdu). The period T31 is, for example, nine days from the 0th day to the 9th day.

  In a period T32 subsequent to the period T31, the growing light and the blue light are irradiated so that the average light intensity of the growing light and the blue light is about 10 (pdu). For example, the light intensity of the growing light decreases with the passage of time, and the light intensity of the blue light increases with the passage of time. The period T32 is, for example, 12 days from the 10th day to the 21st day.

[Comparative Example 1]
Next, light emission control according to Comparative Example 1 will be described. FIG. 11 is a schematic diagram illustrating light emission control according to Comparative Example 1.

  In Comparative Example 1, the rearing area 70 is irradiated with white light emitted from the white light source 22w throughout the first and second stages of the growth. The average light intensity of white light in the first and second stages of growth is about 10 (pdu).

[Comparative Example 2]
Next, light emission control according to Comparative Example 2 will be described. FIG. 12 is a schematic diagram illustrating light emission control according to Comparative Example 2.

  In Comparative Example 2, the breeding area 70 is irradiated with white light emitted from the white light source 22w throughout the first and second breeding periods. The average light intensity of white light in the early growth period is about 10 (pdu), and the average light intensity of white light in the latter growth period is about 5 (pdu). As described above, Comparative Example 2 differs from Comparative Example 1 in that the average light intensity in the late growth period is darker than the average light intensity in the early growth period.

[Fostering results]
The chicken body weights when the light emission control according to Examples 1 to 3 and the light emission control according to Comparative Examples 1 and 2 were performed as described above were changed as shown in FIGS. 13 and 14. FIG. 13 is a first diagram showing changes in the weight of chickens. FIG. 14 is a second diagram (an enlarged view of the latter half of the first diagram) showing changes in the weight of chickens.

  Each graph shown in FIG. 13 and FIG. 14 shows a change in the average body weight of a predetermined number of chickens of about several hundreds raised under the environment where the light emission control shown in the graphs was performed. Each graph shown in FIGS. 13 and 14 shows a relative weight when the weight at the start of measurement is set to 1. In each of the example and the comparative example, the environment (the type and amount of food given to the chicken, the air-conditioning environment, and the like) other than the lighting in the poultry house 60 is the same.

  As shown in FIG. 13 and FIG. 14, after the expiration of the breeding period, Example 1 and Example 2 achieved the highest chicken gain effect. When the light emission control according to Examples 1 to 3 and the light emission control according to Comparative Examples 1 and 2 are arranged in descending order of the weight gain effect, Example 1 and Example 2 are almost equal, and thereafter, Example 3 and Comparative Example 2. Comparative Example 1 is obtained.

  As described above, according to the light emission control in which the breeding area 70 is irradiated with the breeding light during the breeding period, the number of chickens can be increased more efficiently than in the light emission control in which the breeding area 70 is not irradiated with the cultivation light.

[Details of Light Emission Control According to Second Embodiment]
The details of the light emission control according to the second embodiment will be supplemented. FIG. 15 is a flowchart of light emission control according to the second embodiment.

  After the start of the breeding period, the control unit 31 of the control device 30 first irradiates the breeding area 70 selectively with the breeding light (S11). Specifically, the control unit 31 causes the growing light source 22g to emit light so that the average light intensity of the growing light applied to the breeding area 70 becomes 10 (pdu).

  Subsequently, the controller 31 determines whether the first period T21 has ended based on the time measured by the timer 33 (S12). That is, the control unit 31 determines whether the first period T21 has transitioned to the second period T22.

  When the control unit 31 determines that the first period T21 has not ended (No in S12), the control unit 31 continues irradiation of the growing light (S11). On the other hand, when it is determined that the first period T21 has ended (Yes in S12), the control unit 31 irradiates the growth light and the blue light under the first condition (S13). Specifically, the controller 31 causes the growing light source 22g to emit light so that the average light intensity of the growing light applied to the breeding area 70 becomes 5 (pdu), and irradiates the breeding area 70. The blue light source 22b emits light so that the average light intensity of the blue light to be emitted is 5 (pdu).

  Subsequently, the control unit 31 determines whether or not the second period T22 has ended based on the time measured by the clock unit 33 (S14). That is, the control unit 31 determines whether or not the second period T22 (early growth period) has transitioned to the latter growth period.

  When determining that the second period T22 has not ended (No in S14), the control unit 31 continues the irradiation of the growing light and the blue light based on the first condition (S13). On the other hand, when it is determined that the second period T22 has ended (Yes in S14), the control unit 31 irradiates the growth light and the blue light under the second condition (S15). Specifically, the control unit 31 causes the growing light source 22g to emit light so that the average light intensity of the growing light applied to the breeding area 70 becomes 3 (pdu), and irradiates the breeding area 70. The blue light source 22b emits light such that the average light intensity of the blue light to be emitted is 7 (pdu).

  Subsequently, the control unit 31 determines whether or not the second breeding period has ended based on the time measured by the clock unit 33 (S16). When the control unit 31 determines that the second half of the growth is not completed (No in S16), the control unit 31 continues the irradiation of the growth light and the blue light based on the second condition (S15). On the other hand, when the control unit 31 determines that the second cultivation period has ended (Yes in S16), the operation (the cultivation period) ends.

  According to the light emission control according to the second embodiment, the lighting system 10 can efficiently increase the number of chickens. As for the light emission control according to the first and third embodiments and the light emission control according to the first to fifth modifications of the second embodiment described later, the processing included in the flowchart of FIG. 15 may be omitted or changed as appropriate. Therefore, detailed description will be omitted.

[Modification 1 of Embodiment 2]
In the light emission control according to the second embodiment, the breeding area 70 is irradiated with the breeding light throughout the first and second stages of breeding, and the breeding area 70 is irradiated with the blue light in addition to the cultivating light at least in the second half of the breeding. The light emission control according to the second embodiment may be modified within a range satisfying such a condition. Hereinafter, a modification of the light emission control according to the second embodiment (hereinafter, also simply referred to as a modification) will be described.

  FIG. 16 is a schematic diagram illustrating light emission control according to the first modification. In the light emission control according to the first modification illustrated in FIG. 16, the average light intensity of the blue light in the late growth period is higher than that in the light emission control according to the second embodiment. Specifically, the average light intensity of blue light in the latter stage of growth is about 10 (pdu). That is, the brightness of the blue light applied to the breeding area 70 is brighter than the second period T22 in the later stage of breeding.

  As a result, the total brightness of the light applied to the breeding area 70 is larger in the late growth period than in the latter growth period. That is, the combined brightness of the first light and the second light applied to the breeding area 70 is brighter than the second period T22 in the later stage of the breeding.

[Modification 2 of Embodiment 2]
FIG. 17 is a schematic diagram illustrating light emission control according to the second modification. In the light emission control according to the second modification illustrated in FIG. 17, the average light intensity of the blue light in the late growth period is lower than the light emission control according to the second embodiment. Specifically, the average light intensity of the blue light in the latter stage of growth is about 5 (pdu). That is, the brightness of the blue light applied to the breeding area 70 is the same in the second period T22 and the latter stage of the breeding.

  As a result, the total brightness of the light applied to the breeding area 70 is smaller in the late growth period than in the first growth period. That is, the combined brightness of the first light and the second light applied to the breeding area 70 is darker in the later stage of the breeding than in the second period T22.

[Modification 3 of Embodiment 2]
It is not essential that blue light is irradiated during the first growth period, and only the growth light may be selectively irradiated during the first growth period. FIG. 18 is a schematic diagram showing the light emission control according to the third modification. In the light emission control according to the third modification shown in FIG. 18, only the breeding light is selectively irradiated to the breeding area 70 in the first breeding period. The brightness of the breeding light applied to the breeding area 70 is constant in the first breeding period. In the latter stage of breeding, light emission control similar to that of the second embodiment is performed.

  Note that the total brightness of the light applied to the breeding area 70 is the same in the first half of the growth and the second half of the growth. That is, the brightness of the breeding light applied to the breeding area 70 in the first breeding period is the same as the combined brightness of the breeding light and the blue light applied to the breeding area 70 in the second cultivation phase.

[Modification 4 of Embodiment 2]
FIG. 19 is a schematic diagram illustrating light emission control according to the fourth modification. In the light emission control according to the fourth modification illustrated in FIG. 19, the average light intensity of the blue light in the later stage of the growth is higher than the light emission control according to the third modification. Specifically, the average light intensity of blue light in the latter stage of growth is about 10 (pdu).

  As a result, the total brightness of the light applied to the breeding area 70 is larger in the later stage of the breeding than in the first stage of the breeding. That is, the combined brightness of the breeding light and the blue light applied to the breeding area 70 in the later stage of breeding is brighter than the brightness of the breeding light applied to the breeding area 70 in the early breeding period.

[Modification 5 of Embodiment 2]
FIG. 20 is a schematic diagram illustrating light emission control according to Modification Example 5. In the light emission control according to the fifth modification illustrated in FIG. 20, the average light intensity of the blue light in the later stage of the growth is lower than the light emission control according to the third modification. Specifically, the average light intensity of the blue light in the latter stage of growth is about 5 (pdu).

  As a result, the total brightness of the light applied to the breeding area 70 is smaller in the late growth period than in the first growth period. That is, the combined brightness of the breeding light and the blue light applied to the breeding area 70 in the later stage of breeding is darker than the brightness of the cultivated light applied to the breeding area 70 in the early breeding period.

[Other Modifications]
In Example 2, the second period T22 was 12 days from the 10th day to the 21st day. However, the second period T22 may be changed as appropriate. The second period T22 may be provided, for example, in the period from the fourth day to the 28th day, about 1 day to 11 days. The same applies to Modifications 1 and 2.

  In the light emission control of the above-described first to third embodiments, for example, the growth period ends without the light source unit 22 being turned off (while any of the growth light source 22g, the blue light source 22b, and the white light source 22w is turned on). However, the light source unit 22 may be turned off for a predetermined time in one day. The same applies to the light emission control of Modifications 1 to 5.

  Further, during the period when a person enters the poultry house 60, the light emission control of the above-described first to third embodiments may be temporarily stopped. For example, while a person is entering the poultry house 60, the rearing area 70 may be irradiated with white light. The same applies to the light emission control of Modifications 1 to 5.

[Effects]
As described above, the lighting system 10 is used for raising daytime poultry such as chickens. The illumination system 10 controls the light source unit 22 that emits first light having an emission peak wavelength of 560 nm or more and 590 nm or less, and second light having an emission peak wavelength of 450 nm or more and 490 nm or less, and The control unit 31 irradiates the breeding area 70 of daytime poultry with the first light in the early stage of breeding, and irradiates the breeding area 70 with the first light and the second light in the late stage of the breeding. The first light is, for example, the growth light of the above embodiment, and the second light is, for example, the blue light of the above embodiment.

  Such a lighting system 10 can efficiently increase the number of diurnal poultry as shown in the second embodiment and the first to fifth modifications. In addition, such a lighting system 10 can suppress light stimulation (rapid change in light environment) given to daytime poultry by irradiating the first light in both the early growth period and the late growth period.

  Further, for example, the brightness of the first light applied to the breeding area 70 is darker in the latter stage of growth than in the first stage of development.

  Such a lighting system 10 efficiently increases diurnal poultry while suppressing light stimulation given to diurnal poultry by lowering the brightness of the first light in the late breeding stage than in the first breeding period. Can be body.

  Further, for example, the first breeding period includes a first period T21 and a second period T22 following the first period T21. The control unit 31 irradiates the breeding area 70 with the first light and the second light in the second period T22 by controlling the light source unit 22. The brightness of the first light applied to the breeding area 70 is brighter in the first period T21 than in the second period T22, and is brighter in the second period T22 than in the latter stage of the breeding.

  Such a lighting system 10 reduces the brightness of the first light in a stepwise manner as in the second embodiment and the first and second modifications, thereby suppressing light stimulation given to daytime poultry. Diurnal poultry can be efficiently increased.

  In addition, for example, the brightness of the second light applied to the breeding area 70 is the same in the second period T22 and the latter stage of the breeding, or is brighter than the second period T22 in the later stage of the breeding.

  Such a lighting system 10 can efficiently increase the number of diurnal poultry as in the second embodiment and the first and second modifications.

  In addition, for example, the combined brightness of the first light and the second light applied to the breeding area 70 is the same in the second period T22 and the later stage of the breeding.

  Such a lighting system 10 can efficiently increase daytime poultry as in the second embodiment.

  In addition, for example, the combined brightness of the first light and the second light applied to the breeding area 70 is brighter than the second period T22 in the later stage of the breeding.

  Such a lighting system 10 can efficiently increase the number of daytime poultry as in the first modification.

  In addition, for example, the combined brightness of the first light and the second light applied to the breeding area 70 is darker in the latter stage than in the latter stage.

  Such a lighting system 10 can efficiently increase the number of daytime poultry as in the second modification.

  Further, for example, the control unit 31 controls the light source unit 22 to irradiate only the first light of the first light and the second light to the breeding area 70 in the early stage of the growth.

  Such a lighting system 10 can efficiently increase the number of diurnal poultry as in Modifications 3 to 5.

  In addition, for example, the brightness of the first light applied to the breeding area 70 in the first breeding period is the same as the combined brightness of the first light and the second light applied to the breeding area 70 in the second cultivation phase. .

  Such a lighting system 10 can efficiently increase daytime poultry as in the third modification.

  In addition, for example, the combined brightness of the first light and the second light applied to the breeding area 70 in the latter half of the breeding is brighter than the brightness of the first light applied to the breeding area 70 in the first breeding.

  Such a lighting system 10 can efficiently increase the number of daytime poultry, as in the fourth modification.

  In addition, for example, the combined brightness of the first light and the second light applied to the breeding area 70 in the later stage of breeding is darker than the brightness of the first light applied to the breeding area 70 in the first breeding period.

  Such a lighting system 10 can efficiently increase the number of diurnal poultry as in the fifth modification.

  In addition, the breeding method of daytime poultry uses the light source unit 22 that emits first light having an emission peak wavelength of 560 nm or more and 590 nm or less, and second light having an emission peak wavelength of 450 nm or more and 490 nm or less. The first light is irradiated to the breeding area 70 of daytime poultry in the early stage of the breeding, and the first light and the second light are irradiated to the breeding area 70 in the second stage of the breeding.

  Such a breeding method can efficiently increase the number of diurnal poultry as in Example 2 and Modifications 1 to 5. In addition, such a breeding method can suppress light stimulation given to daytime poultry by irradiating the first light in both the first and second stages of breeding.

(Other embodiments)
The lighting system according to the embodiment and the method of breeding daytime poultry have been described above, but the present invention is not limited to the above embodiment.

  For example, the configuration of the light source unit described in the above embodiment is an example. As the light source unit, a fluorescent tube, a metal halide lamp, a sodium lamp, a halogen lamp, a xenon lamp, a neon tube, or the like may be used. Further, for the light source unit, inorganic electroluminescence, organic electroluminescence, chemiluminescence (chemiluminescence), a semiconductor laser, or the like may be used. The light source unit may emit light of a desired color by a spectral filter or the like. The light source unit is not particularly limited as long as it can emit light of a desired color.

  Further, the lighting system according to the above embodiment may be used for raising daytime poultry other than chickens, such as ducks, turkeys, and guinea fowls.

  Further, in the above-described embodiment, a process executed by a specific processing unit may be executed by another processing unit. Further, the order of the processes described in the flowcharts and the like of the above-described embodiment is an example. The order of the plurality of processes may be changed, and the plurality of processes may be executed in parallel.

  Further, in the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

  Further, each component may be realized by hardware. For example, each component may be a circuit (or an integrated circuit). These circuits may constitute one circuit as a whole, or may be separate circuits. Each of these circuits may be a general-purpose circuit or a dedicated circuit.

  Further, the general or specific aspects of the present invention may be realized by a recording medium such as a system, a method, an integrated circuit, a computer program or a computer-readable CD-ROM, and the system, the method, the integrated circuit, and the computer. It may be realized by any combination of a program and a recording medium. For example, the present invention may be realized as a control method for a lighting device, may be realized as a program for causing a computer to execute the control method for a lighting device, or may be realized as a control device according to the above embodiments. May be done.

  Further, in the above embodiment, the lighting system is realized by a plurality of devices, but may be realized as a single device. When the lighting system is realized by a plurality of devices, the components included in the lighting system may be distributed to the plurality of devices in any manner.

  In addition, a form obtained by performing various modifications conceivable by those skilled in the art to each embodiment, or realized by arbitrarily combining components and functions in each embodiment without departing from the spirit of the present invention. Embodiments are also included in the present invention.

  For example, the present invention may be realized as an illumination system that performs light emission control obtained by arbitrarily combining Examples 1 to 3 and Modifications 1 to 5 described in the above embodiment.

Reference Signs List 10 lighting system 22 light source unit 31 control unit 70 breeding area

Claims (12)

A lighting system used for breeding daytime poultry,
A light source that emits first light having an emission peak wavelength of 560 nm or more and 590 nm or less, and second light having an emission peak wavelength of 450 nm or more and 490 nm or less;
By controlling the light source unit, the first light is irradiated to the breeding area of the diurnal poultry in the early stage of breeding, and the first light and the second light are irradiated to the breeding area in the latter stage of the breeding. A lighting system comprising: a control unit that performs irradiation. The lighting system according to claim 1, wherein the brightness of the first light applied to the breeding area is darker in the later stage of the breeding than in the first stage of the breeding. The first growth period includes a first period and a second period following the first period,
The control unit controls the light source unit to irradiate the first light and the second light to the breeding area in the second period,
The brightness of the first light applied to the breeding area is brighter in the first period than in the second period, and is brighter in the second period than in the later stage of breeding. Lighting system. 4. The illumination system according to claim 3, wherein the brightness of the second light applied to the breeding area is the same in the second period and the latter stage of growth, or is brighter in the latter period than in the second period. 5. The lighting system according to claim 3, wherein the combined brightness of the first light and the second light applied to the breeding area is the same in the second period and the later stage of the breeding. The lighting system according to claim 3 or 4, wherein the combined brightness of the first light and the second light applied to the breeding area is brighter in the later stage of the breeding than in the second period. 5. The lighting system according to claim 3, wherein the combined brightness of the first light and the second light applied to the breeding area is darker in the latter stage than in the latter stage. 6. The first-period control unit controls the light source unit to irradiate only the first light of the first light and the second light to the breeding area in the first breeding period. Lighting system. The brightness of the first light applied to the breeding area in the first growth period is the same as the combined brightness of the first light and the second light applied to the breeding area in the second growth period. The lighting system according to claim 8. The combined brightness of the first light and the second light applied to the breeding area in the late growth period is brighter than the brightness of the first light applied to the breeding area in the first growth period. The lighting system according to claim 8. The combined brightness of the first light and the second light applied to the breeding area in the late growth period is darker than the brightness of the first light applied to the breeding area in the first growth stage. The lighting system according to claim 8. Using a light source unit that emits first light having an emission peak wavelength of 560 nm or more and 590 nm or less and second light having an emission peak wavelength of 450 nm or more and 490 nm or less, diurnal poultry in the early stage of growing the first light A method of breeding daytime poultry, wherein the breeding area is irradiated with the first light and the second light in a later stage of breeding.

Images