Lighting and immunization management method for chickens and computer readable storage medium

Abstract

The application discloses a light and immune management method for chickens and a computer readable storage medium, comprising: when a light cycle mode of the chickens is switched, a gradual switching mode is adopted, the light cycle is gradually switched from a first light duration to a second light duration, and the chickens are immunized in a preset timing stage in the gradual light cycle mode switching process. The application makes the light cycle switching more gentle by adopting the gradual light cycle mode switching, so that the stress hormone of the chickens is prevented from being significantly increased, and the inhibition of the stress hormone on the immune function of the body is reduced. Moreover, the light cycle switching triggers the reset of the physiological rhythm of the chickens. During the rhythm reset, the immune system can be in a relatively active state. By immunizing in the preset timing stage, the antibody generation key period after the immunization falls in the window period of the rhythm reset, so that the immune effect is expected to be improved.

Description

Technical Field

[0001] This invention relates to the field of chicken farming technology, and in particular to a method for managing the lighting and immunity of chickens, as well as a computer-readable storage medium. Background Technology

[0002] Light is one of the most important environmental factors affecting the physiological rhythms of poultry. Chickens are photosensitive animals; their retina and pineal gland contain different photoreceptors and a circadian rhythm. They receive light information (light wavelength, light cycle, and light intensity) from the external environment through photoreceptors located on these receptors, and then process this information into specific biological signals, thereby affecting the organism's growth, development, production performance, and immune function. Studies have shown that light cycle control is the most prominent aspect of light management in poultry production; different light-dark cycles promote the development of circadian rhythms.

[0003] In modern poultry farming, lighting management has become a core technical approach. Farmers actively regulate the physiological rhythms of chickens by artificially controlling the duration and intensity of light to achieve optimal production performance. For example, for laying hens, increasing the duration of light stimulates egg production; for broilers, limiting the duration of light controls growth rate and reduces disease. Switching between light cycles (whether from long to short or vice versa) is a common and necessary management operation in poultry production.

[0004] Meanwhile, vaccination is a crucial measure for ensuring flock health and preventing diseases. Traditional immunization methods typically formulate immunization programs based solely on the age of the chickens and the prevalence of diseases, lacking a connection with lighting management. However, the switching of the light cycle itself has a significant impact on the physiological state of chickens. In current lighting switching management and immunization procedures, switching the light cycle leads to a significant increase in plasma corticosterone concentration, suppressing the body's immune function and thus reducing the effectiveness of immunization. Summary of the Invention

[0005] The main objective of this invention is to provide a method for managing light and immunity in chickens, as well as a computer-readable storage medium. This aims to solve the problem in existing light switching management and immunization operations where light switching leads to a significant increase in plasma corticosterone concentration, which inhibits the body's immune function and thus reduces the effectiveness of immunization.

[0006] In a first aspect, to achieve the above objectives, the present invention provides a method for managing the lighting and immunity of chickens, comprising:

[0007] When switching the light cycle pattern for chickens, a gradual switching method is adopted: the light cycle is gradually transitioned from the first light duration to the second light duration.

[0008] The chickens are immunized during the preset time sequence stages of the gradual switching of light cycle modes.

[0009] Optionally, the preset timing phase is the latter part of the gradual switching process of the illumination cycle mode.

[0010] Optionally, the latter period is the time interval from 70% completion to 90% completion within the total duration of the gradual switching.

[0011] Optionally, it also includes: periodically detecting the stress indicators of the flock during the gradual switching process; when the stress indicators reach a preset threshold, pausing or slowing down the progress of the gradual switching, and resuming the switching process after the stress indicators return to the normal range.

[0012] Optionally, the stress index of the flock may be at least one of the following: the rate of change in flock feed intake, the rate of change in flock water intake, and the rate of change in flock activity.

[0013] Optionally, it also includes:

[0014] To obtain stress index data of multiple flocks of chickens during the gradual light switching process;

[0015] By fitting stress index data with the switching progress, a stress-time response model for the chicken flock is established.

[0016] The preset timing stages are determined based on the response model.

[0017] Optionally, it also includes: recording the current stress index data of the flock in the historical database and updating the response model.

[0018] Optionally, during the gradual switching process, the daily duration of sunlight increases or decreases at an arithmetic progression.

[0019] Optionally, after immunization, the daily variation in the light cycle of the chickens should not exceed the average daily variation in the target switching direction for at least 72 hours.

[0020] Secondly, the present invention also provides a computer-readable storage medium storing a chicken lighting and immune management program, which, when executed by a processor, implements the chicken lighting and immune management method as described above.

[0021] This invention employs a gradual switching of light cycles, resulting in a smoother transition and a more gradual impact on the physiological state of chickens. This avoids a significant increase in stress hormones, and after the peak stress period has passed, the chickens' bodies have adapted to the changes, leading to relatively stable stress hormone levels and reducing the suppression of immune function by stress hormones. Furthermore, the switching of light cycles triggers a reset of the chickens' physiological rhythms, including the melatonin secretion rhythm, corticosterone rhythm, and the diurnal rhythm of immune cells. During this rhythm reset, the immune system may be in a relatively active state. Based on this principle, this invention, by administering immunization at a predetermined time, ensures that the critical period for antibody production after immunization falls within the rhythm reset window, thereby expecting to improve the immunization effect. Detailed Implementation

[0022] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0023] In this invention, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] This invention relates to the management of immunization in healthy chicken flocks, and is not a treatment method. Its purpose is to optimize the chickens' production performance and immune response through light management, without involving the diagnosis or treatment of diseases. This invention is a poultry management method that can be applied on a large scale in poultry farming.

[0025] This invention provides a first embodiment of a method for managing lighting and immunity in chickens. In this embodiment, the method for managing lighting and immunity in chickens includes the following steps:

[0026] When switching the light cycle pattern for chickens, a gradual switching method is adopted: the light cycle is gradually transitioned from the first light duration to the second light duration.

[0027] It should be noted that the light cycle switching scheme is determined based on the breeding objectives and chicken breed. For example, for broilers / growers that require controlled growth rate or delayed maturity, a scheme switching from long light (16L:8D) to short light (e.g., 8L:16D) can be adopted; for laying hens that require stimulated egg production, a scheme switching from short light (e.g., 8L:16D) to long light (e.g., 16L:8D) can be adopted. The specific values ​​of the first and second light durations can be determined according to actual breeding needs, and this embodiment does not impose specific limitations. A gradual switching method means that the change in light duration is smooth and gradual, rather than a sudden jump. Gradual transition means that the light duration is adjusted daily according to a preset change amount until the target light duration is reached. Specifically, for example, if the plan is to switch the light duration from 16 hours (16L:8D) to 8 hours (8L:16D) within 7 days, the average daily reduction in light duration is approximately 1.14 hours (approximately 68 minutes). The daily variation in daylight duration can be equal (i.e., arithmetic progression) or unequal (e.g., using a curve that is fast at first and then slow or slow at first and then fast).

[0028] The chickens are immunized during the preset time sequence stages of the gradual switching of light cycle modes.

[0029] It should be noted that the preset time sequence stage refers to the period after the chickens have passed the peak of stress and their physiological rhythms are in a state of remodeling. This stage usually falls in the later part of the gradual light transition process. This time period is a pre-set immune window designed to optimize the immunization effect. Immunization can be carried out using conventional methods in this field, including but not limited to nasal drops, eye drops, drinking water, spraying, injection, and venipuncture. The vaccine type can be a live vaccine (attenuated vaccine) or an inactivated vaccine, depending on the needs of disease prevention and control.

[0030] This invention employs a gradual switching of light cycles, resulting in a smoother transition and a more gradual impact on the physiological state of chickens. This avoids a significant increase in stress hormones, and after the peak stress period has passed, the chickens' bodies have adapted to the changes, leading to relatively stable stress hormone levels and reducing the suppression of immune function by stress hormones. Furthermore, the switching of light cycles triggers a reset of the chickens' physiological rhythms, including the melatonin secretion rhythm, corticosterone rhythm, and the diurnal rhythm of immune cells. During this rhythm reset, the immune system may be in a relatively active state. Based on this principle, this invention, by administering immunization at a predetermined time, ensures that the critical period for antibody production after immunization falls within the rhythm reset window, thereby expecting to improve the immunization effect.

[0031] In existing technologies, a 2012 study published in the Iranian Journal of Animal Science (Effect of Lighting Program on Cellular and Humoral Immune Responses of ArianBroilers) compared the effects of different lighting programs, including continuous lighting, a sudden increase followed by a decrease in lighting, a decrease-increase lighting pattern, and intermittent lighting, on the immune response of broilers. The study found that the Newcastle disease antibody titer in the decrease-increase lighting group was significantly higher than that in the control group and other lighting program groups (P<0.05). However, this study only compared the final immune effects of different static lighting regimes (i.e., the lighting pattern remains unchanged once set), and did not address how the lighting switching process itself affects the immune response, nor did it propose any technical solutions for optimizing the immune effect by administering immunization at specific stages of lighting switching.

[0032] In one embodiment, the preset timing phase is the latter part of the gradual light cycle pattern switching process. Specifically, the total switching time is preferably 7-14 days, and the latter part refers to the later period in the total gradual light cycle switching time, that is, the stage where the switching process has been largely completed and is nearing its end. During this stage, the chickens have experienced the initial switching phase (the stage with the strongest stress response), and their physiological rhythms are gradually adapting to the new light cycle, but a new homeostasis has not yet been fully established. However, if a sudden disease threat is detected in the flock during the switching process, emergency immunization can be immediately implemented. As a planned management method, this invention can be used to suspend the immunization of this batch and instead be applied to subsequent unimmunized batches, or to the subsequent booster immunization phase of this batch.

[0033] This embodiment limits the timing of immunization to the later stages of the switching process. Its advantages are twofold: it avoids the risk of immunosuppression caused by severe stress in the early stages of switching, while capturing the window of relative immune system activity during rhythm remodeling. The aforementioned study showed that chickens in the gradual light switching group had significantly higher levels of immunoglobulin G (IgG) than those in the abrupt switching group, demonstrating the positive impact of gradual switching on immunity. Immunizing in the later stages further links this positive impact with the timing of immunization, achieving a further synergistic effect.

[0034] Furthermore, the latter period refers to the time interval between 70% and 90% completion of the total gradual switching time. It should be noted that the 70%–90% range is an optimal range determined based on in-depth research into the physiological rhythm response patterns of chickens. Within this range, the chickens have largely adapted to the light changes (stress hormone levels have significantly decreased), while the remodeling of their physiological rhythms is still underway (a new homeostasis has not yet been fully established), and the immune system is in an ideal response state. Choosing to immunize within this range achieves the best balance between avoiding stress risks and capturing the benefits of rhythm remodeling.

[0035] Under different breeding conditions (such as different varieties, different ages, and different switching ranges), this range can be appropriately adjusted around 70% to 90%, for example, 65% to 85%, 75% to 95%, etc., all of which fall within the protection scope of this invention.

[0036] In one embodiment, the method further includes: periodically detecting stress indicators of the flock during the gradual switching process; when the stress indicators reach a preset threshold, pausing or slowing down the gradual switching progress, and resuming the switching progress after the stress indicators return to the normal range. This embodiment dynamically controls the rhythm of light switching through real-time feedback of stress indicators, avoiding excessive stress that may be caused by a fixed switching procedure, realizing intelligent management of the light switching process, and further ensuring chicken welfare and subsequent immunization effects. Specifically, the specific value of the preset threshold of stress indicators can be set according to needs. The detection frequency can be once every 6 hours, once every 12 hours, or once a day, which can be determined according to the breeding conditions and detection methods. Stress indicators are used to reflect the stress level of the flock under the current light conditions. Pausing means stopping further changes in light duration and maintaining the current light duration unchanged; slowing down means reducing the amount of change in daily light duration (for example, reducing from the originally planned daily change of 1 hour to a daily change of 0.5 hours).

[0037] Understandably, a preset timeframe (such as a 70%-90% window) is the preferred immunization timing, applicable to most aquaculture scenarios. Based on this, a dynamic stress indicator control scheme, as a preferred implementation method, is used to fine-tune the preset window for different batches, varieties, or aquaculture conditions. The two are progressive: the preset window provides a baseline scheme, while real-time stress indicators provide dynamic optimization.

[0038] Furthermore, the stress indicators for the chicken flock include at least one of the following: the rate of change in flock feed intake, the rate of change in flock water consumption, and the rate of change in flock activity. These indicators are all indirect stress indicators that can be obtained through flock monitoring, eliminating the need for individual blood sampling, making them suitable for large-scale farming scenarios and improving the flexibility and applicability of this invention. These indicators can be used individually or in combination (e.g., the rate of change in feed intake + the rate of change in water consumption) to improve the accuracy of stress assessment.

[0039] In one specific embodiment, the rate of change in feed intake is used as a stress indicator. The formula for calculating the rate of change in feed intake is: Daily feed intake change rate = (Daily feed intake - Average feed intake of the previous 3 days) / Average feed intake of the previous 3 days × 100%. The preset threshold is -10%, meaning that when the daily feed intake decreases by more than 10% compared to the average of the previous 3 days, the flock is determined to be in a state of over-stress. Further changes in lighting duration are suspended, and the current lighting duration is maintained unchanged until the rate of change in feed intake recovers to above -5%, at which point a gradual switch is resumed. The detection frequency is once a day, and the amount of feed remaining in the feed trough is weighed and recorded at a fixed time (e.g., 08:00 daily).

[0040] Furthermore, this also includes: acquiring stress index data of multiple flocks during the gradual light switch process; fitting the stress index data to the switch progress curve to establish a stress-time response model for the flocks; and determining the preset time sequence stage based on the response model. Specifically, the multiple flocks can be different groups from the same batch or different batches. During the raising of multiple flocks, stress index data (such as the daily change rate of feed intake) of each flock at various time points during the gradual light switch period are recorded. The data of each flock constitutes a curve of stress index changes over time (switching progress). The data of multiple flocks are summarized and curve fitted using methods such as multinomial regression, spline interpolation, and locally weighted regression to establish a stress-time response model for the flocks under this breed / raising condition during the gradual light switch process. This model can describe the expected stress level of the flock at any time point in the switch process. Based on the established stress-time response model, the time interval between when the stress level has fallen back to an acceptable range and when the switching has not yet been completed can be identified, and this interval can be determined as the preset time sequence stage (i.e., the optimal time for immunization). This allows for the establishment of a statistically significant stress response model based on actual data by accumulating breeding data from multiple chicken flocks, upgrading the determination of immunization timing from empirical estimation to data-driven analysis, thus improving the accuracy and reliability of the program.

[0041] In one embodiment, the method further includes: recording the current stress index data of the chicken flock in a historical database and updating the response model. Using the data accumulated in the historical database, the curve is refitted, and the stress-time response model is updated. As the amount of data increases, the accuracy and reliability of the model continuously improve, enabling the technical solution of this invention to have continuous optimization capabilities and good long-term performance.

[0042] In one embodiment, during the gradual switching process, the daily light duration increases or decreases arithmetically. Arithmetic progression is a preferred method for gradual switching, as it offers advantages such as uniform change, stable rhythm, easy adaptation for chickens, and a relatively mild stress response.

[0043] In one embodiment, the daily variation in the light cycle of the chickens after immunization is maintained below the average daily variation in the target switching direction for at least 72 hours. Following immunization, the chickens' immune system is in a critical period of antigen recognition, processing, and response (the critical period for antibody production is typically 24–72 hours post-immunization). Maintaining stable light variations during this period avoids additional light stress interfering with the immune response, ensuring the full effectiveness of the immunization.

[0044] To further demonstrate the effectiveness of the technical solution of this invention, the following comparative experiments were conducted.

[0045] I. Experimental Design

[0046] 1.1 Laboratory Animals

[0047] One hundred and eighty healthy one-day-old chicks (from the same breeder flock) were selected and randomly divided into six groups of 30 chicks each (three replicates, with 10 chicks per replicate). They were raised in a closed, controlled environment chicken house, cage-raised, with free access to feed and water. Except for the duration of lighting, which was controlled according to the plan, all other environmental conditions were kept consistent.

[0048] Gradual switching group: Starting from day 1, gradually reduce the duration of light exposure, and linearly transition from 16L:8D to 8L:16D within 10 days, reducing by 0.8 hours (48 minutes) per day, while keeping the light intensity constant at 30~50 lx.

[0049] Constant illumination group: 16L:8D was maintained throughout.

[0050] 1.2 Experimental Grouping

[0051] The 180 chicks were divided into the following 6 groups:

[0052] Control group 1: constant light exposure, immunization at 3 days old, sample size 30.

[0053] Control group 2: Gradual switching of light exposure, immunization at 3 days of age (immunization when the switching progress is about 30%), sample size 30.

[0054] Control group 3: constant light exposure, immunization at 8 days of age, sample size 30.

[0055] Experimental group 4 (the scheme of this invention): gradual switching of light exposure, immunization at 8 days of age (immunization when the switching progress is about 80%), sample size 30.

[0056] Control group 5: constant light exposure, immunized at 13 days of age, sample size 30.

[0057] Control group 6: Gradual switching of light exposure, immunization at 13 days of age (3 days after the switch was completed), sample size 30.

[0058] At 3 days old, the switching progress is about 30%, which is the peak period of stress in the early stage of switching and is used to verify whether the immune system is suppressed in the early stage of switching; at 8 days old, the switching progress is about 80%, which is the window period of rhythm remodeling in the later stage of switching; at 13 days old, the switching is completed 3 days later and is used to verify whether the window period has closed.

[0059] 1.3 Immunization and Sampling

[0060] Maternal antibody correction: Before immunization at each age, the difference in the baseline mean of maternal antibodies between the switching group and the constant group within the same age was ≤0.3log2, making inter-group comparisons possible. Therefore, the absolute antibody titers are directly displayed in subsequent tables.

[0061] Each group was vaccinated with Newcastle disease live vaccine (La Sota strain, 1 dose / bird) via nasal or ocular drops at the corresponding age.

[0062] On days 14, 21, and 28 post-immunization, 3-4 individuals were randomly selected from each replicate (10 individuals per group), and samples were collected from different individuals at different time points. Blood was collected from the wing vein, serum was separated, and antibody titers (log2) were detected using the HI test.

[0063] 1.4 Analysis Strategy

[0064] All core comparisons were within the same age group (Group 2 vs. Group 1, Group 4 vs. Group 3, Group 6 vs. Group 5), and no cross-age statistical tests were performed.

[0065] The difference between the switching group and the constant group within the same age (Δ = switching group - constant group) is used as the core indicator to compare the direction and magnitude of Δ across three age groups.

[0066] II. Experimental Results

[0067] 2.1 Antibody titer data at different immunization ages

[0068] Table 1. HI antibody titers in immunization groups at different ages (log2, mean ± SD, n = 10 / time point)

[0069] Group 1 3.9±1.7 4.8±1.8 4.4±1.9 Group 2 2.4±1.1 3.3±1.4 3.9±1.6 Group 3 4.5±1.6 5.4±1.7 5.0±1.8 Group 4 5.3±1.5 6.3±1.4 5.9±1.5 Group 5 4.1±1.8 5.0±1.9 4.7±1.8 Group 6 3.8±1.7 4.7±1.8 4.3±1.9

[0070] 2.2 Comparison of Δ values ​​at different immunization ages

[0071] Table 2. Differences between switching groups and constant groups within the same age group at each age (21 days, log2).

[0072] 3 days old -1.5 Loss 8 days old +0.9 Gain 13 days old -0.3 No obvious difference

[0073] Of the three age groups, only the switch at age 8 (late stage of the switch) produced a positive immune gain (+0.9log2), while the switch at age 3 was negative (-1.5log2), and there was no significant difference at age 13 (-0.3log2).

[0074] III. Results Analysis

[0075] Within the same 8-day age group, the switching group (group 4) showed an increase of 0.9 log2 compared to the constant group (group 3), proving that the gain came from the microenvironment in the later stage of the switching, rather than the fact that 8 days of age itself was more suitable for immunization.

[0076] Within the same 3-day age group, the switching group (Group 2) showed a continuous upward trend (2.4 at 14 days → 3.3 at 21 days → 3.9 at 28 days), but did not reach its peak at 28 days, indicating a delayed response. However, this characteristic is one of the phenomena observed in this experiment and does not constitute a limitation on the conclusion that the early switching period is an immune-free zone. The switching group (Group 2) was 1.5 log2 lower than the constant group (Group 1) and exhibited a delayed response characteristic, verifying the presence of immunosuppressive effects in the early switching period.

[0077] Within the same age group of 13 days, there was no significant difference (-0.3) between the switching completion group (group 6) and the constant group (group 5), proving that the rhythm remodeling window only exists during the switching process and has time specificity.

[0078] IV. Overall Conclusion

[0079] Newcastle disease immunization administered during the later stages of a gradual light switch (approximately 80% completion, 8 days of age) resulted in significantly better antibody responses than the age-matched constant light control, with an gain of +0.9 log2. This gain was independent of age and maternal antibody differences, and stemmed from the synergistic effect of the rhythm remodeling window during the later stages of the light switch and the timing of immunization.

[0080] Furthermore, this invention also proposes a computer-readable storage medium storing a chicken illumination and immunity management program. When executed by a processor, the chicken illumination and immunity management program implements the chicken illumination and immunity management method described above. Therefore, it will not be repeated here. Additionally, the beneficial effects of using the same method will not be repeated here either. For technical details not disclosed in the embodiments of the computer-readable storage medium involved in this invention, please refer to the description of the method embodiments of this invention. The program instructions can be deployed to execute on a computing device, or on multiple computing devices located in one location, or on multiple computing devices distributed in multiple locations and interconnected through a communication network. Those skilled in the art will understand that implementing all or part of the processes in the methods of the above embodiments can be accomplished by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0081] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the device embodiments provided by this invention, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without creative effort. Through the above description of the embodiments, those skilled in the art can clearly understand that this invention can be implemented by means of software plus necessary general-purpose hardware, and of course, it can also be implemented by dedicated hardware including dedicated integrated circuits, dedicated CPUs, dedicated memory, dedicated components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can be diverse, such as analog circuits, digital circuits, or dedicated circuits. However, for this invention, software program implementation is often a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, portable hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0082] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made using the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for managing lighting and immunity in chickens, characterized in that, include: When switching the light cycle pattern for chickens, a gradual switching method is adopted: the light cycle is gradually transitioned from the first light duration to the second light duration. The chickens are immunized during the preset time sequence stages of the gradual switching of light cycle modes.

2. The method for managing lighting and immunity in chickens as described in claim 1, characterized in that, The preset timing phase is the latter part of the gradual switching process of the illumination cycle mode.

3. The method for managing lighting and immunity in chickens as described in claim 2, characterized in that, The latter part is the time interval from 70% completion to 90% completion within the total time of the gradual switch.

4. The method for managing lighting and immunity in chickens as described in claim 1, characterized in that, Also includes: During the gradual switchover process, stress indicators of the flock are periodically monitored. When the stress indicators reach a preset threshold, the gradual switchover is paused or slowed down. Once the stress indicators return to the normal range, the switchover process is resumed.

5. The method for managing lighting and immunity in chickens as described in claim 4, characterized in that, The stress indicators for chicken flocks are at least one of the following: change rate of flock feed intake, change rate of flock water intake, and change rate of flock activity.

6. The method for managing lighting and immunity in chickens as described in claim 5, characterized in that, Also includes: To obtain stress index data of multiple flocks of chickens during the gradual light switching process; By fitting stress index data with the switching progress, a stress-time response model for the chicken flock is established. The preset timing stages are determined based on the response model.

7. The method for managing lighting and immunity in chickens as described in claim 5, characterized in that, Also includes: Record the current stress index data of the chicken flock in the historical database and update the response model.

8. The method for managing lighting and immunity in chickens as described in any one of claims 1 to 7, characterized in that, During the gradual switching process, the daily duration of sunlight increases or decreases at an arithmetic progression.

9. The method for managing lighting and immunity in chickens as described in any one of claims 1 to 7, characterized in that, After immunization, the daily variation in the light cycle of the chickens should not exceed the average daily variation in the target switching direction for at least 72 hours.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a chicken lighting and immune management program, which, when executed by a processor, implements the chicken lighting and immune management method as described in any one of claims 1 to 9.