JP6827214B2 - Lighting system and diurnal poultry breeding method - Google Patents

Description

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

Chicken breeding is actively practiced in various countries around the world, including Japan, as an industry. For example, Patent Document 1 discloses a breeding method in which the lighting in the poultry house is brightened at the initial stage of breeding and gradually dimmed by the time of shipment.

Japanese Unexamined Patent Publication No. 2009-171866

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

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

The lighting system according to one aspect of the present invention is a lighting system used for breeding daytime poultry, and includes a light source unit that emits first light having a peak emission wavelength of 555 nm or more and 595 nm or less, and the light source unit. By controlling, the control unit is provided to irradiate the breeding area of the daytime poultry with the first light.

In the method for breeding diurnal poultry according to one aspect of the present invention, the breeding region of diurnal poultry is irradiated with a first light having an emission peak wavelength of 555 nm or more and 595 nm or less.

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

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

Hereinafter, embodiments will be described with reference to the drawings. It should be noted that all of the embodiments described below are comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, the order of steps, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept are described as arbitrary components.

It should be noted that each figure is a schematic view and is not necessarily exactly shown. Further, in each figure, substantially the same configuration is designated by the same reference numerals, and duplicate description may be omitted or simplified.

(Embodiment)
[Constitution]
First, the configuration of the lighting system according to the embodiment will be described. FIG. 1 is a diagram showing an outline of a lighting system according to an embodiment. FIG. 2 is a block diagram showing 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 diurnal poultry, and more specifically, the lighting system 10 is 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 installed on the ceiling of the poultry house 60, and a plurality of lighting devices 20 may be installed. Specifically, the lighting device 20 irradiates the breeding area 70 (floor of the poultry house 60) in which a plurality of chickens are bred with light. As a result, the chickens in the poultry house 60 are irradiated with light.

The breed of chickens raised in the poultry house 60 is, for example, a broiler (more specifically, chunky, cobb, or arbor aca), but may be other breeds such as so-called local chickens.

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

The growing light source 22g included in the light source unit 22 emits light having an emission peak wavelength of 555 nm or more and 595 nm or less, for example. In the following, this light is also referred to as growing light. The growing light is an example of the first light, for example, monochromatic light. Specifically, the growing light may be green light (yellowish green light) having an emission peak wavelength of 555 nm or more and 570 nm or less, or yellow light having an emission peak wavelength of 570 nm or more and 595 nm or less. The growing light does not have an emission peak in the wavelength range of 505 nm or more and 545 nm or less. 3 and 4 are diagrams showing an example of the emission spectrum of the growing light.

The growing light source 22g is specifically a light emitting module using an LED configured to emit the growing light, but the specific embodiment of the growing 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. 5 and 6 are diagrams showing an example of the emission spectrum of blue light emitted by the blue light source 22b. The blue light is an example of the second light having a chromaticity different from that of 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 a second light having a chromaticity different from that of the first light. FIG. 7 is a diagram showing an example of an emission spectrum of white light emitted by the white light source 22w.

The white light emitted by the white light source 22w may be white on the blackbody locus or white that deviates from the blackbody locus. The color temperature of the white light emitted by the white light source 22w is not particularly limited. In the embodiment, the color temperature of the white light emitted by the white light source 22w is a relatively high color temperature of 5000K or more and 8000K or less.

Specifically, the white light source 22w is 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 lighting device 20 (light source unit 22) emits growing light having an emission peak wavelength of 555 nm or more and 595 nm or less, and blue light or white light having a chromaticity different from that of 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 timekeeping 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 growing 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 region 70 with the breeding light, the blue light, and the white light. The control of the control unit 31 includes lighting, extinguishing, and dimming (adjustment of brightness in the lit state).

Specifically, the control unit 31 is composed of a DMX control circuit (dimming 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, a microcomputer, or the like. The storage unit 32 is realized by, for example, a semiconductor memory.

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

[Example 1]
The inventors have found that during the breeding period of chickens, the weight gain of chickens can be promoted by irradiating the breeding region 70 with light having a peak emission wavelength of 555 nm or more and 595 nm or less. Hereinafter, Examples 1 to 6 and Comparative Examples 1 and 2 using the lighting system 10 will be described in detail. FIG. 8 is a schematic diagram showing 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 lux (lux) of an incandescent lamp with the eyes of a chicken. In FIG. 8, the horizontal axis indicates the growing period (day).

First, the growing period will be described. The breeding period for chickens for meat such as broilers is generally about 49 days. In the embodiment, of the 49-day breeding period, 3 weeks immediately after the start of breeding (from the 0th day to the 21st day) is defined as the first stage of breeding. The first half of training is an example of the first period. The age of the chicken is 1, from the 0th day to the 7th day, 2 from the 8th day to the 14th day, and 3 from the 15th day to the 21st day.

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

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

The boundary between the early stage of breeding and the late stage of breeding does not have to be strictly defined as described above, and may belong to, for example, from the 19th day to the 24th day of the breeding period. In addition, the breeding period may be a period until the chicken reaches a predetermined weight. That is, the growing period may be a fluid period.

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

In Example 1, the first half of breeding is divided into three periods, period T11, period T12, and period T13. In Example 1, 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 (pd. u.) About. In Example 1, the average light intensity in the period T11 is 1.4 times or more the average light intensity in the period T12.

In the following, the light emission control performed in the period T11 is also described as a 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 during the period T12 is also described as a normal light emission control.

As described above, in the first embodiment, the control unit 31 irradiates the breeding region 70 with the breeding light having the first brightness (light intensity in the period T11), and then the second brightness is darker than the first brightness. The breeding area 70 is irradiated with the growing light (light intensity in the period T12). Further, the first brightness is 1.4 times or more brighter than the second brightness.

In Example 1, the period T11 is 3 days from the 0th day to the 3rd day. Further, in Example 1, the period T12 is 6 days from the 4th day to the 9th day. As described above, the length of the period during which the breeding light of the first brightness is irradiated to the breeding region 70 is shorter than the length of the period during which the breeding light of the second brightness is irradiated to the breeding region 70.

The period T13 following the period T12 is a period (adaptation period) for acclimatizing the chicken from the environment irradiated with the breeding light to the environment irradiated with the blue light. The period T13 is an example of the first target period. In the period T13, blue light is irradiated in addition to the growing light. That is, light that is a mixture of growing light and blue light is irradiated. The period T13 is 12 days from the 10th day to the 21st day in Example 1. In the following, the light emission control performed during the period T13 is also described as a mixed light emission control.

In the period T13, the growing light and the blue light are irradiated so that the average light intensity of the growing light and the blue light combined 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. During the period T13, the growing light and the blue light may be irradiated at a constant ratio (for example, 1: 1).

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

In Example 2, the breeding area 70 is selectively irradiated with the breeding light in the early stage of breeding, and the breeding area 70 is selectively irradiated with blue light in the latter stage of the breeding. The average light intensity of the growing light in the early stage of growing varies depending on the period, but the average light intensity of blue light in the latter stage of growing is about 10 (pdu).

The light emission control according to the second embodiment does not have an adaptation period in the light emission control according to the first embodiment. The light emission control according to the second embodiment is substantially the same as the light emission control according to the first embodiment, except that an adaptation period is not provided. Hereinafter, the differences from the first embodiment will be described.

In the second embodiment, the first half of the breeding period is divided into two periods, a period T21 and a period T22. In Example 2, the average light intensity of the growing light in the period T21 is about 20 (pdu), and the average light intensity of the growing light in the period T22 following the period T21 is 10 (pd. u.) About.

In Example 2, the period T21 is 3 days from the 0th day to the 3rd day. In Example 2, the period T22 is 18 days from the 4th day to the 21st day.

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

In Example 3, at least the breeding area 70 is irradiated with the breeding light in the early stage of breeding, and the breeding area 70 is selectively irradiated with blue light in the latter stage of the breeding. The average light intensity of the growing light in the early growing period is almost constant except for the adaptation period. The average light intensity of blue light in the late stage of growing is about 10 (pdu).

The light emission control according to the third embodiment does not have a boost period in the light emission control according to the first embodiment. The light emission control according to the third embodiment is substantially the same as the light emission control according to the first embodiment, except that a boost period is not provided. Hereinafter, the differences from the first embodiment will be described.

In Example 3, the first half of breeding is divided into two periods, period T31 and period T32. In Example 3, the average light intensity of the growing light in the period T31 is about 10 (pdu). The period T31 is, for example, 9 days from the 0th day to the 9th day.

In the period T32 following the period T31, the growing light and the blue light are irradiated so that the average light intensity of the combined 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.

[Example 4]
Next, the light emission control according to the fourth embodiment will be described. FIG. 11 is a schematic view showing light emission control according to the fourth embodiment.

In Example 4, the breeding area 70 is selectively irradiated with the breeding light in the early stage of breeding, and the breeding area 70 is selectively irradiated with blue light in the latter stage of the breeding. The average light intensity of the growing light in the early growing period is about 10 (pdu). The average light intensity of blue light in the late stage of growing is about 10 (pdu).

The light emission control according to the fourth embodiment does not have a boost period and an adaptation period in the light emission control according to the first embodiment. The light emission control according to the fourth embodiment is substantially the same as the light emission control according to the first embodiment, except that the boost period and the adaptation period are not provided.

[Example 5]
Next, the light emission control according to the fifth embodiment will be described. FIG. 12 is a schematic view showing light emission control according to the fifth embodiment.

In Example 5, the breeding region 70 is irradiated with the breeding light in the early stage of breeding, and the breeding region 70 is irradiated with the white light emitted by the white light source 22w in the latter stage of the breeding. The average light intensity of the growing light in the early growing period is about 10 (pdu). The average light intensity of white light in the late stage of growing is about 10 (pdu).

As described above, the light emission control according to Example 5 is different from that of Example 4 in that white light is irradiated instead of blue light in the late stage of growing.

[Example 6]
Next, the light emission control according to the sixth embodiment will be described. FIG. 13 is a schematic view showing light emission control according to the sixth embodiment.

In Example 6, the breeding area 70 is irradiated with breeding light throughout the early breeding stage and the late breeding stage. The average light intensity of the growing light in the early and late stages of growing is about 10 (pdu).

As described above, the light emission control according to Example 6 is different from that of Examples 4 and 5 in that the growing light is irradiated in the latter stage of growing.

[Comparative Example 1]
Next, the light emission control according to Comparative Example 1 will be described. FIG. 14 is a schematic diagram showing light emission control according to Comparative Example 1.

In Comparative Example 1, the breeding area 70 is irradiated with white light emitted by the white light source 22w throughout the early and late breeding stages. The average light intensity of white light in the early stage and the late stage of growing is about 10 (pdu).

[Comparative Example 2]
Next, the light emission control according to Comparative Example 2 will be described. FIG. 15 is a schematic diagram showing light emission control according to Comparative Example 2.

In Comparative Example 2, the breeding area 70 is irradiated with white light emitted by the white light source 22w throughout the early and late breeding stages. The average light intensity of white light in the early stage of growing is about 10 (pdu), and the average light intensity of white light in the late stage of growing is about 5 (pdu). As described above, Comparative Example 2 is different from Comparative Example 1 in that the average light intensity in the late stage of growing is darker than the average light intensity in the early stage of growing.

[Training results]
The weight of the chicken when the light emission control according to Examples 1 to 6 as described above and the light emission control according to Comparative Examples 1 and 2 were performed changed as shown in FIGS. 16 and 17. FIG. 16 is a first diagram showing changes in chicken body weight. FIG. 17 is a second diagram (enlarged view of the latter half of the first diagram) showing the transition of the body weight of the chicken.

Each graph shown in FIGS. 16 and 17 shows a change in the average body weight of a predetermined number of chickens of about several hundreds raised in the environment in which the light emission control shown in the graph is performed. Each graph shown in FIGS. 16 and 17 shows the relative body weight when the body weight at the start of measurement is 1. In each of the examples and the comparative examples, the environment other than the lighting in the poultry house 60 (type and amount of food given to the chickens, air conditioning environment, etc.) is the same.

As shown in FIGS. 16 and 17, after the expiration of the breeding period, the highest chicken body gain effect was obtained by Example 1. When the light emission control according to Examples 1 to 6 and Comparative Examples 1 and 2 are arranged in descending order of body weight gain effect, Example 1, Example 2, Example 3, Example 4, Example 5, and Example 6 are arranged. , Comparative Example 2 and Comparative Example 1.

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 chicken can be increased more efficiently than the light emission control in which the breeding area 70 is not irradiated with the breeding light.

[Details of light emission control of Example 1]
The details of the light emission control of Example 1 will be supplemented. FIG. 18 is a flowchart of light emission control according to the first embodiment.

After the start of the growing period, the control unit 31 of the control device 30 performs boost light emission control (S11). Specifically, the control unit 31 selectively causes the growing light source 22g included in the light source unit 22 of the lighting device 20 to emit light at the first brightness. In other words, the control unit 31 irradiates the breeding region 70 with the breeding light having the first brightness.

Subsequently, the control unit 31 determines whether or not the period T11 has ended based on the time measured by the timekeeping unit 33 (S12). That is, the control unit 31 determines whether or not the period T11 has transitioned to the period T12.

When the control unit 31 determines that the period T11 has not ended (No in S12), the control unit 31 continues the boost light emission control (irradiation of the growing light having the first brightness) (S11). On the other hand, when the control unit 31 determines that the period T11 has ended (Yes in S12), the control unit 31 performs normal light emission control (S13). Specifically, the control unit 31 causes 22 g of the breeding light source to emit light at a second brightness darker than the first brightness, and irradiates the breeding region 70 with the breeding light of the second brightness.

Subsequently, the control unit 31 determines whether or not the period T12 has ended based on the time measured by the timekeeping unit 33 (S14). That is, the control unit 31 determines whether or not the period T12 has transitioned to the period T13.

When the control unit 31 determines that the period T12 has not ended (No in S14), the control unit 31 continues the normal control (irradiation of the growing light having the second brightness) (S13). On the other hand, when the control unit 31 determines that the period T12 has ended (Yes in S14), the control unit 31 performs mixed light emission control (S15). Specifically, the control unit 31 first turns on the blue light source 22b in addition to the growing light source 22g. Then, the control unit 31 darkens the growing light emitted from the growing light source 22g with the passage of time, and brightens the blue light emitted from the blue light source 22b with the passage of time.

Subsequently, the control unit 31 determines whether or not the period T13 has ended based on the time measured by the timekeeping unit 33 (S16). That is, the control unit 31 determines whether or not the period T13 (early stage of breeding) has transitioned to the late stage of breeding.

When the control unit 31 determines that the period T13 has not ended (No in S16), the control unit 31 continues the mixed light emission control (S15). On the other hand, when the control unit 31 determines that the period T13 has ended (Yes in S16), the control unit 31 irradiates the breeding area 70 with blue light (S17). Specifically, the control unit 31 turns off the growing light source 22g and selectively causes the blue light source 22b to emit light.

Subsequently, the control unit 31 determines whether or not the late stage of breeding has been completed based on the time measured by the timekeeping unit 33 (S18). When the control unit 31 determines that the late stage of breeding has not been completed (No in S18 ), the control unit 31 continues irradiation with blue light (S17). On the other hand, when the control unit 31 determines that the late stage of breeding has ended (Yes in S18), the operation (cultivation period) ends.

According to the light emission control of the first embodiment, the lighting system 10 can efficiently increase the number of chickens. Since the light emission control of Examples 2 to 6 can be realized by appropriately omitting or changing the processing included in the flowchart of FIG. 18, detailed description thereof will be omitted.

[Modification example]
In the first and second embodiments, the average light intensity of the growing light during the period when the boost emission control is performed is about 20 (pdu), and the average light intensity of the growing light during the period when the normal emission control is performed. The average light intensity was about 10 (pdu), but such an average light intensity is an example. The average light intensity during the period when the boost emission control is performed may be 20 (pdu) or more, and the average light intensity during the period when the normal emission control is performed is 20 (pdu). It may be less than.

Further, in Examples 1 and 2 above, the boost period was the initial 3 days in the first half of the breeding period, but it may be a period of 1 day or more and 3 days or less.

Further, in Examples 1 and 3, the adaptation period was 12 days from the 10th day to the 21st day. In other words, the acclimatization period was set in the first target period immediately before the latter half of the growing period. However, the adaptation period may be provided in the second target period immediately after the early stage of the growth in the latter stage of the growth, or may be provided over the first target period and the second target period. The acclimatization period may be, for example, 1 day or more and 11 days or less in the period from the 4th day to the 28th day. The acclimatization period may include at least one of a first target period (eg, period T13 or period T32) and a second target period (eg, at least a portion of the 22nd to 28th days). The acclimatization period is, in other words, the target period.

Further, in the light emission control of Examples 1 to 6 above, for example, the growing period ends without the light source unit 22 turning off (always one of the growing light source 22g, the blue light source 22b, and the white light source 22w is lit). However, the light source unit 22 may be turned off for a predetermined time in a day. Further, during the period when a person is in the poultry house 60, the light emission control of Examples 1 to 6 may be temporarily stopped. For example, while a person is in the poultry house 60, the breeding area 70 may be irradiated with white light.

[Effects, etc.]
As described above, the lighting system 10 is used for breeding chickens. Chickens are an example of diurnal poultry. The lighting system 10 includes a light source unit 22 that emits breeding light having an emission peak wavelength of 555 nm or more and 595 nm or less, and a control unit 31 that controls the light source unit 22 to irradiate the breeding light to the chicken breeding region 70. The first light is the growing light of the above embodiment.

As a result, the lighting system 10 can efficiently increase the number of chickens as compared with the case where the breeding area 70 is not irradiated with the first light (Comparative Examples 1 and 2) as in Examples 1 to 6.

Further, the control unit 31 controls the light source unit 22 to irradiate the breeding region 70 with the first light having the first brightness, and then the second brightness is darker than the first brightness. The breeding area 70 may be irradiated with the light of 1. For example, the first brightness may be 1.4 times or more brighter than the second brightness, and the length of the period during which the first light of the first brightness is applied to the breeding area 70 is. The length of the period during which the first light of the second brightness is irradiated to the breeding area 70 may be shorter than the length of the period.

According to such boost light emission control, the lighting system 10 can efficiently increase the number of chickens as in the first and second embodiments. In addition, in FIGS. 16 and 17, the difference between the final weight corresponding to Example 1 and the final weight corresponding to Example 3, or the final weight corresponding to Example 2 and the final weight corresponding to Example 4 The difference in body weight indirectly indicates the weight gain effect obtained by boost luminescence control.

Further, the light source unit 22 further emits a second light having a chromaticity different from that of the first light, and the control unit 31 controls the light source unit 22 to irradiate the breeding area 70 with the first light. In the second period after the first period, the breeding area 70 may be irradiated with the second light. The first period is, for example, the early stage of breeding of the above-described embodiment, and the second period is, for example, the latter stage of breeding of the above-described embodiment.

As a result, the chicken can be efficiently increased as in Examples 1 to 5.

Further, the second light may be blue light having an emission peak wavelength of 450 nm or more and 495 nm or less.

As a result, the lighting system 10 can efficiently increase the number of chickens as in Examples 1 to 4.

Further, by controlling the light source unit 22, the control unit 31 controls the first target period immediately before the second period of the first period and the second target period immediately after the first period of the second period. The breeding area 70 may be irradiated with both the first light and the second light during the target period including at least one of them. Specifically, the control unit 31 controls the light source unit 22 to reduce the brightness of the first light with the passage of time and to reduce the brightness of the second light with the passage of time in the target period. It may be increased over time. The target period is, for example, the adaptation period of the above embodiment.

According to such mixed light emission control, the lighting system 10 can efficiently increase the number of chickens as in the first and third embodiments. In addition, in FIGS. 16 and 17, the difference between the final weight corresponding to Example 1 and the final weight corresponding to Example 2, or the final weight corresponding to Example 3 and the final weight corresponding to Example 4 The difference in body weight indirectly indicates the weight gain effect obtained by the mixed luminescence control.

Further, the second light may be white light. Specifically, the color temperature of the second light may be 5000K or more and 8000K or less.

As a result, the lighting system 10 can efficiently increase the number of chickens as in the fifth embodiment.

Further, the first light does not have to have an emission peak in the wavelength range of 505 nm or more and 545 nm or less.

As a result, the lighting system 10 can efficiently increase the number of chickens by irradiating the first light having no emission peak in the wavelength range of 505 nm or more and 545 nm or less.

Further, in the method of breeding diurnal poultry such as chickens carried out by the lighting system 10, the breeding region 70 of diurnal poultry is irradiated with a first light having an emission peak wavelength of 555 nm or more and 595 nm or less.

Such a breeding method can efficiently increase the number of chickens as compared with the case where the breeding area 70 is not irradiated with the first light (Comparative Examples 1 and 2) as in Examples 1 to 6.

(Other embodiments)
Although the lighting system according to the embodiment and the method for breeding diurnal poultry have been described above, the present invention is not limited to the above embodiment.

Further, the configuration of the light source unit described in the above embodiment is an example. 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 as the light source unit. Further, an inorganic electroluminescence, an organic electroluminescence, a chemiluminescence (chemiluminescence), a semiconductor laser or the like may be used for the light source unit. Further, the light source unit may emit light of a desired color by a spectroscopic filter or the like. The light source unit is not particularly limited as long as it can emit light of a desired color.

In addition, the lighting system according to the above embodiment may be used for breeding diurnal poultry other than chickens, such as ducks, turkeys, and guinea fowl.

Also, comprehensive or specific embodiments of the present invention may be implemented in recording media such as systems, methods, integrated circuits, computer programs or computer-readable CD-ROMs, systems, methods, integrated circuits, computers. 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 a control method for a lighting device, or may be realized as a control device according to the above embodiment. May be done.

Further, in the above embodiment, all or a part of the components such as the control unit may be realized by being composed of dedicated hardware or 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, the distribution of the components to the device in the above embodiment is an example. For example, the lighting device and the control device may be realized as one device. Further, the lighting device may have a part of the function of the control device. Further, the storage unit included in the control unit may be realized as a storage device provided outside the lighting system.

In addition, it is realized by applying various modifications to each embodiment that can be conceived by those skilled in the art, or by arbitrarily combining the components and functions of each embodiment within the range not deviating from the gist of the present invention. The form is also included in the present invention.

10 Lighting system 22 Light source unit 31 Control unit 70 Breeding area

Claims (12)

A lighting system used for the breeding of diurnal poultry.
A light source unit that emits first light having an emission peak wavelength of 555 nm or more and 595 nm or less.
Equipped with a control unit
By controlling the light source unit, the control unit irradiates the breeding region of the diurnal poultry with the first light of the first brightness , and then the control unit is darker than the first brightness. A lighting system that irradiates the breeding area with the first light having a brightness of 2 . The lighting system according to claim 1 , wherein the first brightness is 1.4 times or more brighter than the second brightness. The length of the period during which the first light of the first brightness is irradiated to the breeding area is greater than the length of the period during which the first light of the second brightness is irradiated to the breeding area. The lighting system according to claim 1 or 2, which is also short. The light source unit further emits a second light having a chromaticity different from that of the first light.
By controlling the light source unit, the control unit causes the breeding area to be irradiated with the second light in the second period after the first period in which the breeding area is irradiated with the first light. The lighting system according to any one of claims 1 to 3 . The lighting system according to claim 4 , wherein the second light is blue light having an emission peak wavelength of 450 nm or more and 495 nm or less. A lighting system used for the breeding of diurnal poultry.
A light source unit that emits a first light having an emission peak wavelength of 555 nm or more and 595 nm or less, and a second light having a chromaticity different from that of the first light.
Equipped with a control unit
The control unit controls the light source unit to control the light source unit.
During the first period, the first light was applied to the breeding area of the diurnal poultry.
In the second period after the first period, the breeding area is irradiated with the second light.
In the target period including at least one of the first target period immediately before the second period of the first period and the second target period immediately after the first period of the second period, the first period. Irradiate the breeding area with both light and the second light.
Lighting system. By controlling the light source unit, the control unit reduces the brightness of the first light with the passage of time and reduces the brightness of the second light with the passage of time in the target period. The lighting system according to claim 6 . The lighting system according to claim 4 , wherein the second light is white light. The lighting system according to claim 8 , wherein the color temperature of the second light is 5000 K or more and 8000 K or less. The lighting system according to any one of claims 1 to 9 , wherein the first light does not have an emission peak in a wavelength range of 505 nm or more and 545 nm or less. After irradiating the breeding region of diurnal poultry with the first light having an emission peak wavelength of 555 nm or more and 595 nm or less with the first brightness , the first light having a second brightness darker than the first brightness is used. A method for breeding diurnal poultry that irradiates the breeding area with the light of . During the first period, the first light having an emission peak wavelength of 555 nm or more and 595 nm or less was irradiated to the breeding area of diurnal poultry .
In the second period after the first period, the breeding area is irradiated with a second light having a chromaticity different from that of the first light.
In the target period including at least one of the first target period immediately before the second period of the first period and the second target period immediately after the first period of the second period, the first period. A method for breeding diurnal poultry in which the breeding area is irradiated with both light and the second light .

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