Low-stress light supplementing method for henhouse inspection robot

Abstract

The invention discloses a low-stress light supplementing method for a henhouse inspection robot. The method comprises the following steps: installing a cold white light source on an inspection robot in a chicken house, and when the inspection robot is used for inspecting each chicken coop in the chicken house, using the cold white light source to sequentially irradiate chickens in each chicken coop through which the inspection robot passes, so as to carry out low-stress light supplement on the chickens. By means of the method, the levels of chicken serum glutamine, chicken superoxide dismutase, chicken corticosterone, chicken follicle-stimulating hormone and chicken estradiol of laying hens can be improved, then the stress level of the laying hens under the influence of an inspection robot is effectively improved, the laying rate is not affected, damage to poultry bodies is reduced, the yield is increased, and better breeding efficiency is achieved; the method has double advantages of image acquisition quality optimization and animal welfare guarantee, and provides reliable technical support for intensive breeding.

Description

Technical Field

[0001] The invention relates to a light-filling method, relates to the technical field of poultry breeding automation, and particularly relates to a low-stress light-filling method for a chicken house inspection robot. Background Art

[0002] Eggs and chicken, rich in high-quality protein, are essential sources of animal protein in our daily lives and offer a cost-effective alternative to red meat. The increasing demand for eggs and chicken has fueled the growth of the laying hen industry. Layer farming is a crucial component of the poultry industry. To ensure increased production to meet market demand, intensive farming methods are necessary. Large-scale, high-density farming is replacing traditional free-range farming. However, this large-scale, high-density approach has made layer farming more challenging, forcing farmers to work in larger and more crowded sheds than ever before, significantly increasing the workload. This labor-intensive and time-consuming method also requires a high level of staffing, impacting both efficiency and results. Furthermore, the lack of innovative technology in traditional methods, coupled with the increased density of chickens, creates safety risks for workers involved in the extensive work within the sheds. Furthermore, the frequent entry of farmers into the sheds places significant pressure on epidemic prevention efforts. These factors have significantly driven the emergence and application of inspection robot technology.

[0003] However, the implementation of robotics in agricultural scenarios still faces the scientific challenge of animal behavioral adaptation. Taking the inspection robot supplementary lighting system as an example, the visual perception modules of existing equipment mostly rely on visible light or near-infrared spectral imaging technology. To ensure the quality of image acquisition, auxiliary light sources such as LED supplementary lights are often required. However, laying hens are photoperiod-sensitive poultry. The cone cells in their retinas are highly sensitive to wavelengths of 400-700nm, especially blue light (450-480nm) and red light (620-750nm), which can trigger strong stress responses. Experimental studies have shown that when the cold white light (color temperature 6000K) in the chicken house suddenly increases by more than 200 lux, laying hens will show stress symptoms such as pupil constriction, feather erection, and increased activity. Lasting for 30 minutes can cause serum cortisol concentrations to increase by 15%-22%, directly affecting egg production and eggshell quality. This phenomenon exposes a widespread technical blind spot in current inspection robot development. Most research focuses on basic functionalities like SLAM (Simultaneous Localization and Mapping) navigation and robotic arm control, while neglecting the coordinated optimization of animal welfare and equipment operation. Therefore, there is an urgent need to address the stress and egg production impacts of inspection robots on laying hens. Summary of the Invention

[0004] In order to solve the problems existing in the background technology, the present invention provides a low-stress lighting method for a chicken house inspection robot. The method of the present invention is used to optimize the light environment of the laying hen house, providing the use of cold white light with a color temperature of 6500K and a light intensity of 20lx to effectively alleviate adverse reactions such as fright stress caused by the inspection robot during the inspection process, reducing stress indicators such as superoxide dismutase (SOD), chicken corticosterone (CORT), serum glutamine Gln, follicle-stimulating hormone (FSH), and estradiol (E2) in laying hens, avoiding inflammatory reactions, oxidative stress, and other potential negative effects caused by fright stress that hinder the production performance of laying hens.

[0005] The technical solution adopted in the present invention is: The low-stress lighting method for the chicken house inspection robot of the present invention comprises: A cold white light source is installed on an inspection robot. When the inspection robot is used to inspect each stacked chicken cage in the chicken house, the cold white light source is used to illuminate the chickens in each stacked chicken cage that the inspection robot passes by in turn, so as to provide low-stress supplementary lighting for the chickens.

[0006] The present invention aims to provide low-stress supplementary lighting for laying hens by using a supplementary light source with a light color temperature that minimizes stress for laying hens, so that laying hens can always maintain a stress level without supplementary light interference and without affecting the egg production rate even when they are affected by the supplementary lighting of an inspection robot.

[0007] The color temperature of the cold white light source is 5500K-6500K.

[0008] The illumination intensity of the cold white light source is 20 lx.

[0009] The light source of the cold white light is an incandescent lamp, a light emitting diode (LED), an organic light emitting diode (OLED), a quantum LED lamp or a fluorescent lamp, etc., but is not limited thereto. Other light sources that can achieve the color temperature value can be used; the light source is detachable and can be disassembled and replaced according to different actual needs to illuminate the stacked chicken coop.

[0010] The chickens in each stacked chicken cage in the chicken house are all laying hens that have entered the laying period, specifically the laying period of 55 weeks of age; the laying hens are Hy-Line Grays but are not limited to them, and the laying hens are commercial laying hens but can be extended to all laying poultry; the laying period refers to the period from the initial egg-laying period to the peak period of laying hens but is not limited to them, and can also be extended to the breeding process of caged laying hens.

[0011] The stress level of the laying hens after being irradiated by the cold white light source on the inspection robot is the same as the stress level without the supplementary light of the inspection robot, or the difference is less than a preset stress threshold.

[0012] The egg laying rate of the laying hens after being irradiated by the cold white light source on the inspection robot is the same as the egg laying rate without the supplementary light of the inspection robot, or the difference is less than a preset egg laying rate threshold.

[0013] The inspection robot inspects at a constant speed, so as to monitor the laying hens in each stacked chicken cage in real time through the camera on the inspection robot.

[0014] The irradiation of the cold white light source starts at a preset first time point in the morning and a preset second time point in the afternoon every day, and the duration of each irradiation of each stacked chicken cage is the same.

[0015] The dimensions of each stacked chicken cage in the chicken house are the same.

[0016] The beneficial effects of the present invention are: 1. The method of the present invention uses special color temperature light as the supplementary light source for the inspection robot to regulate the secretion of hormones such as serum glutamine, superoxide dismutase, corticosterone, chicken follicle-stimulating hormone and chicken estradiol levels of laying hens, thereby improving the stress level of laying hens and maintaining egg production rate, while also achieving low energy consumption and green energy-saving effects.

[0017] 2. The method of the present invention is based on actual breeding scenarios and combines realistic factors. It can effectively alleviate the damage caused to poultry by the stress caused by supplementary light, further reduce the stress caused by supplementary light on poultry, and improve the animal welfare of poultry farming.

[0018] In summary, this method can effectively improve the stress levels of laying hens under the influence of inspection robots without affecting egg production, reduce damage to the poultry body, and even increase production, achieving better farming efficiency. This method combines the dual advantages of optimizing image acquisition quality and ensuring animal welfare, providing reliable technical support for intensive farming. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the inspection robot of the present invention; Figure 2This is the result chart of hormone index levels of laying hens in different light supplementation groups, among which, Figure 2 (a) is the result of serum glutamine Gln hormone level of laying hens in different light supplementation groups. Figure 2 (b) is the result chart of superoxide dismutase (SOD) hormone index levels of laying hens in different light supplementation groups. Figure 2 (c) is the result chart of FSH hormone level in laying hens in different light supplementation groups. Figure 2 (d) is the result graph of estradiol E2 hormone level of laying hens in different light supplementation groups. Figure 2 (e) is the result graph of the CORT hormone level of laying hens in different light supplementation groups. Figure 2 (f) is the result chart of peroxidase (POD) hormone index level of laying hens in different light supplementation groups. Figure 2 (g) is the result graph of the progesterone PROG hormone level of laying hens in different light supplementation groups. Figure 2 (h) is the result chart of melatonin hormone level in laying hens in different light supplementation groups. Figure 2 (i) is the result graph of the luteinizing hormone LH (Luteinizing Hormone) level of laying hens in different light supplementation groups; Figure 3 Schematic diagram of the operating mode of the body temperature sensor of the present invention; Figure 4 This is the temperature data of laying hens in different light supplementation groups, among which, Figure 4 (a) is the temperature data of laying hens in the 2700K supplementary light group from 9:30 to 10:30 in the morning. o1o2 and so on represent the numbers of laying hens in the 2700K supplementary light group wearing temperature sensors. Figure 4 (b) is the body temperature data of laying hens in the 6500K supplementary light group from 9:30 to 10:30 in the morning; Figure 5 This is a comparison chart of the noise of laying hens in different lighting groups, among which, Figure 5 (a) is the noise graph of laying hens in the 2700K fill light group. Figure 5 (b) is the noise graph of laying hens in the 6500K fill light group. Figure 5 (c) is the noise graph of laying hens in the control group; In the picture: 1. Inspection robot, 2. Light source, 3. Computer, 4. Camera, 5. Microphone, 6. Stacked chicken cage, 7. Laying hens. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1As shown, the present invention uses a standard laying hen house as the breeding environment for laying hens 7. The dimensions of the stacked chicken cages 6 used in the present invention are 45cm×40cm×42cm. A water line is placed in each stacked chicken cage 6, and the water source is continuous to provide the laying hens 7 with daily drinking water needs. There is a feed trough next to the stacked chicken cages 6. Five laying hens 7 are raised in each stacked chicken cage 6. The feed truck is started at 6:00, 12:00, 16:00 and 18:00 every morning for feeding. A light bulb is installed on the top of the breeding chicken house. It is regulated by the light intensity controller to adjust the light intensity in real time and evenly illuminate the entire cage area. In the present invention, 36 sets of caged Hy-Line gray laying hens 7 were selected for experiments with two experimental groups and one parallel control group, with 6 replicates in each group.

[0022] The two experimental groups of the present invention were designed as follows: 1) Inspection robot 1 used a supplemental light source 2 with a light intensity of 20 lx and a light color temperature of 2700K during inspections; 2) Inspection robot 1 used a supplemental light source 2 with a light intensity of 20 lx and a light color temperature of 6500K during inspections. Specifically, the cold white light source 2 was installed on the inspection robot 1 in the chicken coop. As the inspection robot 1 inspected each stacked chicken cage 6 in the chicken coop, the cold white light source 2 sequentially illuminated the chickens in each stacked chicken cage 6 that the inspection robot 1 passed through, providing low-stress supplemental lighting for the chickens. A control group was designed in which the inspection robot did not use supplemental lighting during inspections. The light source 2 is detachable, and the required light source 2 can be disassembled and replaced according to different actual needs, and the stacked chicken cage 6 can be illuminated; the stress and supplementary lighting period of the laying hen 7 includes the entire egg-laying period of the poultry, and the egg-laying period refers to the period from the initial egg-laying period of the laying hen 7 to the peak period, but is not limited to this, and can also be extended to the breeding process of the caged laying hen 7.

[0023] The inspection robot 1 inspects at a constant speed, so as to monitor the laying hens 7 in each stacked cage 6 in real time through the camera 4 on the inspection robot 1, which can be specifically 20-25 cm / s, preferably 20 cm / s; the operating noise of the inspection robot 1 is below 40 dB, which does not affect the daily diet and sleep of the laying hens 7, and the images of the laying hens 7 taken by the camera 4 can be transmitted to the computer 3 for real-time monitoring.

[0024] The present invention aims to provide low-stress supplementary lighting for laying hens 7 by using a supplementary light source 2 with a light color temperature that minimizes stress for laying hens 7, so that the laying hens 7 always maintain a stress level without supplementary light interference and do not affect the egg production rate when they are affected by the supplementary light of the inspection robot 1.

[0025] The specific implementation process of the present invention is as follows: The light cycle of the experimental group and the control group were set according to the light cycle of the laying hen house, that is, light: dark = 16:8, and the light duration should not be less than 16 hours. Taking 16:8 as an example, the light time can be set to 8:00-24:00, and the dark time can be set to 0:00-8:00 the next day.

[0026] First, 180 Hy-Line grey laying hens 7 of the same age, similar weight, and similar physiological condition were selected for breeding. Five laying hens 7 were randomly assigned to each stacked chicken cage 6. The breeding density was less than 10 laying hens / m³, which met animal welfare requirements. During the breeding period, white light for livestock and poultry breeding was used for illumination, the room temperature was controlled at 23±1℃, and the relative humidity was controlled at 50%~60%.

[0027] Then, an experiment was conducted. Experimental Group 1 (cw): During the post-laying period of laying hens 7, patrol robot 1 used LED light source 2, which emitted light with a color temperature of 6500 K and an intensity of 20 lx, to illuminate the hens for 2-3 seconds daily. The illumination time was 10:00 and 16:00, respectively. Patrol robot 1 was controlled by a remote control to reduce stress caused by human activities on the hens. This illumination lasted for 21 days. Experimental Group 2 (ww): The same conditions as in Experimental Group 1 were used, but LED light source 2 emitted 2700 K daily as supplemental light to illuminate the hens. This was conducted simultaneously with Experiment 1. Control Group ck: The experimental conditions were identical to those of Experimental Groups 1 and 2, but patrol robot 1 only patrolled along a pre-set route each day, without supplemental lighting, to ensure that no other variables other than supplemental lighting could cause stress.

[0028] The present invention selects 55-week-old Hailan gray laying hens 7 in an actual breeding scenario as experimental subjects for the experimental group and the control group, and places them in a stacked chicken cage 6. Experimental Group 1, Experimental Group 2, and the control group all have 6 replicate groups, with two cages of laying hens 7 forming a replicate group, and each cage of laying hens 7 contains 5 laying hens. LED lights are installed above the passage in the breeding area, and other light sources are removed around the breeding area to avoid interference. Such a breeding area has two parts in total, and Experimental Group 1, Experimental Group 2, and the control group are separated to avoid light source interference with each other. During the experiment, the feed, water, temperature, and humidity of the chickens are guaranteed, and the feeding standards of laying hens in the reference test site are unified.

[0029] Then, sampling and testing were carried out. The sampling stage was set at the end of the entire experimental stage, that is, on the 21st day of the experiment. After operating the inspection robot 1 to perform fill light (the fill light angle was horizontal, and the effective irradiation radius was 20 cm), the sample indicators collected were: serum indicators, body temperature and sound.

[0030] When testing serum indicators, 2 laying hens were taken from each replicate group for blood drawing (the control group was not supplemented with light, but the indicators were collected at the same time as those in the experimental groups 1 and 2). 12 laying hens were taken from the experimental group and the control group respectively for blood drawing, and serum separation was performed in time to detect hormone indicators such as serum glutamine Gln, superoxide dismutase SOD, follicle-stimulating hormone FSH, estradiol E2, chicken corticosterone CORT, peroxidase POD, progesterone PROG, melatonin melatonin and luteinizing hormone LH in the serum. The test results are as follows: Figure 2 (a) Figure 2 (b) Figure 2 (c) Figure 2 (d) and Figure 2 As shown in (e), after supplementary light irradiation, hormone analysis showed that there were significant differences in the levels of serum glutamine Gln, superoxide dismutase SOD, follicle-stimulating hormone FSH, estradiol E2, and chicken corticosterone CORT between the control group and the 2700K supplementary light group. At the same time, compared with the 2700K supplementary light group, the serum glutamine Gln (P<0.01), superoxide dismutase SOD (P<0.0001), and chicken corticosterone CORT (P<0.001) of the 6500K supplementary light group were significantly reduced. Although there was no significant difference in follicle-stimulating hormone FSH, its content was significantly reduced, which is beneficial to improving the egg production rate of laying hens; at the same time, although there was no significant difference in estradiol E2, its content was significantly increased. It was proved that 6500K irradiation significantly improved the antioxidant capacity of laying hens and reduced the peroxidation effect caused by light supplementation stress. At the same time, the increase of estradiol E2 also means the improvement of laying hens' production capacity. There was no significant difference in various hormone indicators between the 6500K light supplementation group and the non-light supplementation group, indicating that the 6500K light supplementation group caused less stress to laying hens than the non-light supplementation group. Figure 2 (f), Figure 2 (g), Figure 2 (h) and Figure 2 As shown in (i), there were no significant differences in progesterone PROG, peroxidase POD, melatonin, and luteinizing hormone LH among the three groups. One asterisk in the figure indicates that the statistical significance reaches the preset threshold, usually corresponding to a probability value p-value satisfying p < 0.05, that is, the null hypothesis is rejected at the 5% significance level; two asterisks indicate high significance, corresponding to p < 0.01, and the null hypothesis is rejected at the 1% significance level; three asterisks indicate extremely high significance, corresponding to p < 0.001, and the null hypothesis is rejected at the 0.1% significance level; four asterisks indicate super high significance, corresponding to p < 0.0001, and the null hypothesis is rejected at the 0.01% significance level, emphasizing the extreme strength of statistical evidence; the ns symbol in the figure indicates that the statistical test did not reach the preset significance level, usually p ≥ 0.05, and the null hypothesis cannot be rejected, that is, the effect size or the difference between the groups is not statistically significant.

[0031] like Figure 3 As shown, when measuring body temperature, a TSic716 digital temperature sensor is used to collect temperature information. The signal is transmitted to the router terminal via the radio frequency (RF) module integrated within the microcontroller unit (MCU). The TSic716 digital temperature sensor and MCU integrated module are fabricated into a patch and applied to the armpit of a laying hen 7, collecting the hen's temperature data in real time. The router receives the 2.4GHz signal from the node's RF module and packages every four temperature signals via the MQTT protocol to a cloud-based database server. Users can use the NFC function of mobile devices, such as mobile phones, to read the laying hen's temperature data in real time and monitor temperature changes. The intelligent temperature sensing cloud platform, available on PCs or mobile devices, offers a wide range of functions, including real-time viewing, exporting, and visualization of temperature data, historical review, and early warning. By exporting full-process temperature reports, poultry temperatures can be traced. Remote users can then integrate and analyze this data to summarize historical temperature trends and proactively implement disease prevention measures if any abnormalities are detected. The temperature data of the inspection robot 1 was collected 15 minutes before and 15 minutes after the completion of the fill light, and the temperature change table was obtained. The significance analysis of the temperature data was performed. The results are as follows: Figure 4 (a) and Figure 4 As shown in (b), Figure 4 (a) shows the temperature variation range of the 2700K supplementary lighting group. o1o2 and other numbers represent the numbers of the laying hens wearing body temperature sensors. The body temperature data in the figure shows that the temperature fluctuations are quite obvious, indicating that the 2700K supplementary lighting will affect the metabolism of laying hens to a certain extent. Figure 4 (b) shows the temperature range of the 6500K supplemental lighting group, with w1, w2, etc. representing the numbers of the laying hens wearing temperature sensors. The temperature data in this figure is relatively stable compared to (a), indicating that the 6500K supplemental lighting group has a weaker effect on the temperature changes of the laying hens. Furthermore, a t-test analysis of the per-minute temperature data after supplemental lighting stress in the experimental group and the 6500K control group revealed no significant difference between the groups per minute after supplemental lighting stress.

[0032] During the sound index detection, an SGC-578 high-sensitivity microphone 5 was installed on the inspection robot 1 to record the noise of the laying hens 7 when the inspection robot 1 was performing the fill light operation. Subsequently, the noise was analyzed in the frequency domain and decibel range using software to obtain a sound spectrum diagram, as shown in the figure below. Figure 5 (a) Figure 5 (b) and Figure 5As shown in (c), the three pictures represent the 2700K supplementary light group, the 6500K supplementary light group and the non-supplementary light group respectively. The results show that under the three different experimental conditions, the noise decibel of the control group without supplementary light is the lowest, the noise decibel of the 2700K supplementary light group is the highest, and the 6500K supplementary light group is between the two, indicating that the stress caused by supplementary light to laying hens in the 6500K supplementary light group is less than that in the 2700K supplementary light group.

[0033] In actual application of the present invention in laying hen farming, supplementing the hen's light with 6500K blue light can reduce the hen's CORT secretion and stress level. It also regulates the secretion of hormones such as serum glutamine (Gln) and superoxide dismutase (SOD), thereby improving the hen's stress level and maintaining follicle-stimulating hormone (FSH) and estradiol (E2) levels without affecting egg production. The stress level of the hen after exposure to the cold white light source 2 on the inspection robot 1 is the same as, or the difference is less than, a preset stress threshold. The egg production rate of the hen after exposure to the cold white light source 2 on the inspection robot 1 is the same as, or the difference is less than, a preset egg production threshold. In specific implementations, the preset egg production threshold is set to 90%. The present invention reveals the correlation mechanism between the fill light color temperature condition and the stress level of laying hens 7. Based on this relationship, a special light color temperature is used as the fill light source 2, which significantly reduces the stress level of laying hens 7 without affecting the egg production rate.

[0034] In combination with actual production scenarios, when farmers intend to introduce the inspection robot 1 to inspect the chicken coop, they can adjust the color and intensity of the fill light in advance to increase the poultry's ability to resist fear stress and reduce the adverse effects of stress on poultry production and development as much as possible. The fill light scheme designed by the invention is combined with poultry farming management to control the cost of stress resistance, avoid the secondary stress caused by the inspection robot 1 itself, and help poultry relieve oxidative stress in tissues such as the liver, thereby strengthening animal welfare requirements during poultry farming. In specific implementation, the present invention also sets a reasonable light environment, such as light intensity and cycle, and at the same time evaluates indicators that express the degree of stress of broiler chickens under stress, such as blood plasma biochemical parameters, sound indicators, egg production, body temperature data, etc. The present invention provides protection for improving animal welfare in the poultry farming stage, and provides a solution to the stress caused to laying hens 7 by the use of inspection robots 1 in current large-scale farming environments without paying attention to fill light.

[0035] The method of the present invention can effectively reduce the negative impact of stress on laying hens 7 when the inspection robot 1 performs fill light operation through the 6500K fill light color, increase the levels of antioxidant enzymes and immune compounds, reduce oxidative metabolites, and reduce the content of reactive oxygen products in the body to reduce the body's stress response, reduce oxidative stress damage, help improve the stress level of laying hens 7, and increase industrial economic benefits.

[0036] The method of the present invention aims to solve the problem that supplementary lighting during chicken house inspections can easily aggravate the stress of laying hens. The color temperature-hormone response correlation is performed, and supplementary lighting parameter constraint rules are proposed. A light source 2 with a color temperature of 2700 K or 6500 K and an intensity of 20 lx is installed on the side of an inspection robot 1. Fixed-point supplementary lighting is performed twice a day at 10:00 and 16:00 at a cruising speed of 20 cm / s (single exposure 2 s). Serum stress markers such as glutamine Gln, superoxide dismutase SOD, and corticosterone CORT, as well as follicle-stimulating hormone FSH and estradiol E2 are tested by enzyme-linked immunosorbent assay (ELISA) to construct a multi-index evaluation system. The experiment showed that compared with the traditional 2700K warm white light supplementation group, the serum glutamine Gln of the 6500K supplementation group decreased by 13.2% (P<0.01), superoxide dismutase SOD decreased by 23.0% (P<0.0001), and corticosterone CORT decreased by 33.4% (P<0.001). At the same time, the experiment showed that compared with the non-supplementation group, the serum glutamine Gln of the 2700K warm white light supplementation group increased by 112.1% (P<0.001), superoxide SOD increased by 21.8% (P < 0.001), follicle-stimulating hormone (FSH) increased by 27.1% (P < 0.01), estradiol (E2) decreased by 35.5% (P < 0.05), and corticosterone (CORT) increased by 28.6 (P < 0.001). There were no significant differences in any hormone indicators between the 6500K light-supplemented and non-light-supplemented groups, indicating that the 6500K light-supplemented group caused less stress in laying hens than the non-light-supplemented group, effectively improving stress levels without affecting egg production. This invention combines the dual advantages of optimizing image acquisition quality and ensuring animal welfare, providing reliable technical support for intensive farming.

[0037] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the present invention is intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0038] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the equivalent technology of the present invention, the present application is intended to include these modifications and variations.

Claims

1. A low-stress lighting method for a chicken house inspection robot, characterized in that: include: A cold white light source (2) is mounted on an inspection robot (1). When the inspection robot (1) is used to inspect each stacked chicken cage (6) in a chicken house, the cold white light source (2) is used to sequentially illuminate the chickens in each stacked chicken cage (6) passed by the inspection robot (1), so as to provide low-stress supplementary lighting for the chickens.

2. The low-stress lighting method for a chicken house inspection robot according to claim 1, characterized in that: The color temperature of the cold white light source (2) is 5500K-6500K.

3. The low-stress lighting method for a chicken house inspection robot according to claim 1, characterized in that: The illumination intensity of the cold white light source (2) is 20 lx.

4. The low-stress lighting method for a chicken house inspection robot according to claim 1, characterized in that: The cold white light source (2) is an incandescent lamp, a light emitting diode (LED) lamp, an organic light emitting diode (OLED) lamp, a quantum LED lamp or a fluorescent lamp.

5. The low-stress lighting method for a chicken house inspection robot according to claim 1, characterized in that: The chickens in each stacked chicken cage (6) in the chicken house are all laying hens (7) that have entered the egg-laying period.

6. The low-stress lighting method for a chicken house inspection robot according to claim 5, characterized in that: The stress level of the laying hen (7) after being irradiated by the cold white light source (2) on the inspection robot (1) is the same as the stress level without the supplementary light of the inspection robot (1), or the difference is less than a preset stress threshold.

7. The low-stress lighting method for a chicken house inspection robot according to claim 5, characterized in that: The egg production rate of the laying hen (7) after being irradiated by the cold white light source (2) on the inspection robot (1) is the same as the egg production rate without the supplementary light of the inspection robot (1), or the difference is less than a preset egg production rate threshold.

8. The low-stress lighting method for a chicken house inspection robot according to claim 1, characterized in that: The inspection robot (1) inspects at a constant speed, so as to monitor the laying hens (7) in each stacked chicken cage (6) in real time through the camera (4) on the inspection robot (1).

9. The low-stress lighting method for a chicken house inspection robot according to claim 1, characterized in that: The irradiation start time of the cold white light source (2) is a preset first time point in the morning and a preset second time point in the afternoon every day, and the duration of each irradiation of each stacked chicken cage (6) is the same.

10. The low-stress lighting method for a chicken house inspection robot according to claim 1, characterized in that: The dimensions of each stacked chicken cage (6) in the chicken house are the same.

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