342 results about "Dorking chicken" patented technology

The invention belongs to the technical field of laying hen breeding illumination, and particularly relates to a laying hen breeding illumination hierarchical control system and method based on image recognition. The laying hen breeding illumination hierarchical control method based on image recognition comprises the following steps that S10, cameras are arranged in a plurality of breeding areas, breeding types and breeding stages are stored in the breeding areas in an associated mode, color features are stored in the breeding types in an associated mode, and size features and behavior features are stored in the breeding stages in an associated mode; the camera is used for collecting image information of laying hens in a breeding area; s20, identifying and extracting the contour feature of the laying hen in the image information as a first feature, and identifying and extracting the contour feature of the coop in the image information as a second feature; a dimensional ratio between the first feature and the second feature is obtained. According to the scheme, through the image recognition technology and automatic control, the problem that a breeder needs to repeat a large amount of inspection and parameter setting work in the actual breeding process is solved, and the working efficiency and the breeding management level are remarkably improved.

The invention relates to the technical field of livestock and poultry intelligent breeding, and discloses a laying hen body type and weight evaluation method and system based on image recognition, and the method comprises the steps: obtaining laying hen behavior video data and environment parameter data; processing the video data, identifying the behavior mode of the laying hens, analyzing the relevance between the environmental parameter data and behaviors, and establishing state representation; constructing a strategy network, realizing stress state detection and optimal evaluation opportunity automatic selection, and extracting body shape features in a stable attitude; constructing a body weight evaluation model by using the body shape characteristics at the selected time and combining the identified behavior state information; learning feature distribution of a normal evaluation process of the body weight evaluation model, and detecting an abnormal evaluation result through double indexes of reconstruction error and probability deviation; through fusion of behavior analysis, environment perception and quality control, high-precision and high-reliability evaluation of the body type and weight of the laying hen is realized.

The invention discloses a laying hen health state intelligent evaluation system and method based on multi-mode perception, and relates to the technical field of intelligent breeding and animal health monitoring. The system comprises a multi-modal data integration and acquisition module, a dynamic multi-modal adaptive fusion module, a health-egg laying bidirectional collaborative prediction module, a closed-loop iterative optimization module and a health-egg laying linkage suggestion output module. According to the method, a comprehensive and accurate data basis is constructed, and the data collaboration value is mined through multi-dimensional acquisition, differential preprocessing and dynamic fusion; according to the method, state evaluation is accurate and stable, health-egg laying two-way collaborative prediction is adopted to excavate space-time correlation, closed-loop optimization is adopted to ensure that a result fits reality, linkage suggestions are output, a health regulation and egg laying optimization scheme is defined, scientific decision basis is provided for farmers, and fine management is assisted.

The invention discloses a molecular marker combination related to a cockscomb height character and a detection reagent and application thereof, and belongs to the technical field of molecular genetics. According to the molecular marker combination and the detection reagent thereof, ten SNP loci remarkably associated with the chicken first-laying crown height and the 130-day-old crown height are identified in the intron of the CTCF gene for the first time, based on the SNP loci, the molecular marker combination related to the cockscomb height character and the detection reagent thereof are designed, and the molecular marker combination and the detection reagent thereof can be used for early screening of laying hens with high cockscomb height and can be used for early screening of laying hens with high cockscomb height. The method is of great significance to breeding and breeding of precocious high-quality laying hens.

The invention discloses a chicken sex identification method based on fluorescence labeling, and belongs to the technical field of gene engineering. The chicken sex identification method comprises the following steps: co-transfecting a CRISPR / Cas9 system and a WPG-EGFP donor plasmid into chicken primordial germ cells PGCs, screening to obtain EGFP positive PGCs, micro-injecting the EGFP positive PGCs into a receptor chicken embryo, hatching to obtain an EGFP reproductive chimera chicken, and identifying the sex through fluorescence labeling, the CRISPR / Cas9 system comprises sgRNA of a targeted chicken W chromosome WPG gene; the WPG-EGFP donor plasmid is constructed by inserting an EGFP gene into a WPG gene locus through a homologous recombination strategy. According to the method, the sex of the chicken can be visually and rapidly identified. The method solves the problems that a traditional sex identification method is complex in operation and depends on sample ages, has the advantages of high efficiency and accuracy, and is suitable for sex control and screening of poultry such as laying hens and broilers.

The invention provides a laying hen industry AI large model training method and system, and relates to the technical field of large model training. The method comprises the following steps: acquiring feeding parameter data, and performing data clustering based on an egg laying cycle to form an egg laying feeding cycle data set; according to the different egg laying feeding cycle data sets, correlation analysis aiming at the feeding parameter change influence quantity is carried out, and feeding parameter egg laying influence correlation characteristic data is formed; real-time feeding parameter information is obtained, feeding result analysis is carried out according to the feeding parameter egg laying influence correlation characteristic data, and real-time feeding result prediction data is formed. According to the method, reasonable estimation of productivity is realized through analysis of factor data influencing egg laying of the laying hens, so that effective assessment of productivity risks can be realized, and feeding adjustment can be guided in time.

The invention belongs to the technical field of feed additives, and particularly relates to a feed additive for improving the production performance, egg quality and body health of laying hens and application of the feed additive. The feed additive is composed of mulberry leaf powder and bacillus licheniformis. The invention also provides a feed which is composed of a basic feed and the feed additive, each 1kg of the feed contains 1 * 10 < 10 > CFU of bacillus licheniformis, and the mass of the mulberry leaf powder is 9%-15% of the mass of the feed. Animal experiments prove that the feed additive disclosed by the invention has no obvious negative influence on the production performance and the body health of laying hens, and can also obviously improve the egg quality. The invention provides a feasible scheme for reduction and substitution of soybean meal and corn in livestock and poultry feed, and has important practical significance for relieving structural shortage of protein feed raw materials.

The invention relates to the field of agricultural operation management information processing, in particular to a laying hen feed nutrition intelligent proportioning method and system. The method comprises the following steps: acquiring weight, laying rate and environmental data of laying hens, and performing time alignment and cleaning, feature extraction and model reasoning to generate a nutritional demand prediction result; performing demand mapping, constraint verification and raw material binding on the basis of demands and a feed raw material nutrition library to generate a formula optimization problem; carrying out cost loading, optimization solution and executable check in combination with raw material prices to generate formula issuing data; and performing parameter updating and threshold adjustment through protocol adaptation, task arrangement and execution feedback to generate revised parameters. The system has the beneficial effects of improving the feed proportioning precision, optimizing the nutrition supply, reducing the cost and realizing automatic closed-loop management.

The utility model belongs to the technical field of laying hen breeding, particularly relates to a trough for laying hen breeding, and aims to solve the problems that in the background technology, the protective property is poor, and redundant feed is not cleaned in time, the trough for laying hen breeding comprises a feed frame, railings distributed at equal intervals are welded to the outer wall of the top of the feed frame, and top inclined plates are welded to the outer walls of the tops of the railings. A plurality of handrails are arranged on the feed frame, the top inclined plate can prevent sundries from falling into the feeding trough and can also prevent laying hens from falling excrement into the feeding trough, it is guaranteed that feed in the feeding trough is clean, the protection effect is good, the second trough plate and the first trough plate can be separated through extension of the piston rod of the electric push rod, and the feeding trough is convenient to use. The bottom of the feeding trough formed by the second trough plate and the first trough plate forms a blanking space, redundant feed can directly fall into the collecting frame below, the freshness of the feed during laying hen feeding is guaranteed, damage to intestinal tracts of laying hens is effectively avoided, and the death rate of the laying hens is reduced.

The invention discloses a UVB control method and system for laying hen breeding, and the method comprises the steps: arranging a multi-band UVB intelligent light supplement lamp and an illumination intensity sensor in a henhouse, building an intelligent illumination regulation and control module based on a laying hen growth model, and building communication. The system obtains laying hen growth parameters and real-time illumination data, and determines and controls parameters of a light supplement lamp. According to the method, the UVB illumination time, intensity and wavelength can be accurately regulated and controlled according to factors such as different growth stages of laying hens, seasonal changes and breeding environments, and the UVB illumination time, intensity and wavelength can be accurately regulated and controlled according to different growth stages of laying hens, seasonal changes, breeding environments and the like; the method is an innovative method which can be cooperatively controlled with other breeding environment factors, so that the egg laying performance, egg quality and overall health level of laying hens are improved.

The invention discloses a grain-saving disease-resistant high-yield black feather laying hen commercial line male parent breeding method and a commercial line seed production method, which comprises the following specific steps: step S1: by taking a homozygous dwarf gene (dw) type dark purple fast-feathering chicken as a basic material, hybridizing with a princess chicken to obtain a first generation (F1) hybridized synthetic line chick; s2, the bred and selected first-generation sibs are subjected to inbreeding, and second-generation (F2) chicks are generated; s3, selecting cocks with excellent quality traits of the second generation and backcrossing the cocks with the hens of the first generation to generate a third generation (F3); s4, screening out cocks conforming to target traits from the third generation (F3), namely the grain-saving disease-resistant high-yield black feather laying hen commercial line male parents; then selecting a Rhode Island Red parent generation hen (slow feathering) as a female parent to form a grain-saving disease-resistant high-yield black feather laying hen commercial line; and the bred commercial generation chicks can sex automatically.

The application discloses application of glycyrrhetinic acid as a feed additive to improve the egg laying rate of laying hens. In the laying hen diet of the application, only glycyrrhetinic acid is added, and no chemical synthetic drugs and hormone substances are added, so that the safety of chicken and egg products is guaranteed from the source. The application fully considers the feed cost in application and feed preparation problems, selects glycyrrhetinic acid with low cost, fully plays the medicinal value of traditional Chinese medicinal materials, and the glycyrrhetinic acid is a natural plant extract, has no toxic side effects on laying hens, meanwhile, the preparation and purification method of the glycyrrhetinic acid is simple, the market price is low, and the glycyrrhetinic acid has the advantages of large-scale application.

The utility model discloses an egg sorting device for egg -breeding, relates to egg sorting technical field, including base, the lateral surface fixed mounting of base has the material conveying mechanism, the upper surface fixed mounting of base has rotary unit and guide tube, the fixed mounting of rotary unit has the material grabbing unit, and the protection unit is installed in guide tube, and the fixed mounting of material grabbing unit and guide tube has detection unit. Advantageous effects lie in that the size of egg is detected through the second photoelectric sensing mechanism, the weight of egg is detected through the suspension weighing mechanism, the specification of egg is determined quickly, the top plate and the elastic pad are driven by the force arm and the buffer detection assembly to clamp the egg quickly, the sorting of egg is completed, the egg is buffered and protected through the elastic pad and the buffer detection assembly, thereby effectively improving the efficiency of egg sorting, reducing the collision damage of egg in the sorting process, and guaranteeing the quality after the sorting of egg.

The utility model discloses a feeding trough for laying hen breeding, which comprises a feeding trough body, a placing plate is rotatably connected in the feeding trough body, and a front hole is arranged on the front side wall of the feeding trough body. By arranging the feeding trough body, the placing plate, the front hole, the rear hole, an air spraying pipe, an air spraying head, a front cover, a water guide pipe, a water spraying head, an inflation pump, a self-priming pump, a sliding groove, a sliding block, a rack, a gear shaft, an electric rod, a protective cover and a collecting box, feed is put above the placing plate, and when the placing plate needs to be cleaned, the electric rod can be started to enable the placing plate to incline backwards, so that the feeding trough is convenient to clean. Meanwhile, an inflation pump and an air spraying head are started to clean the feed falling from the bottom of the feeding trough into the collecting box, recycling is facilitated, feed waste is reduced, then the containing plate inclines forwards, a self-sucking pump and a water spraying head are started to spray water to the upper surface of the containing plate, and therefore the containing plate is cleaned; the placement plate is clean, and the cleaning efficiency is improved.

The present application relates to the technical field of livestock and poultry hatching breeding, and particularly relates to a plateau low-pressure environment hen egg hatching process, which sequentially comprises egg pre-treatment, pre-hatching regulation, mid-hatching regulation, post-hatching regulation and hatching regulation; the egg pre-treatment is to pre-warm, atomize and disinfect with livestock special non-toxic disinfectant and naturally dry after screening qualified eggs; the pre-hatching is 1d to 7d, the mid-hatching is 8d to 14d, the post-hatching is 15d to 18d, and the hatching is 19d to 21d. The present application aims at the hatching pain point of the plateau low-pressure environment, constructs a whole-process gradient collaborative hen egg hatching system, implements multi-parameter collaborative regulation from the egg pre-treatment to the whole hatching process, effectively solves the technical problems of the plateau hatching, and has significant technical advantages and application value.

The present invention provides an application of a SNP genetic marker affecting chicken breast width in chicken genetic breeding, belonging to the fields of livestock and poultry genomic selective breeding and biotechnology. The SNP genetic marker affecting chicken breast width includes CB_tag11, which corresponds to the physical position 17298459 of chromosome 11 of the chicken reference genome bGalGal 1.mat.broi ler.GRCg7b version sequence information published by NCBI, and belongs to the 14th intron of the gene GSE1, where the base is A or G. CB_tag11 helps to genetically increase breast width. Its application in chicken genetic breeding is beneficial for improving breast width in laying hens and obtaining high-quality laying hen varieties.

The present application relates to the field of laying hen breeding, and discloses a method and system for monitoring laying hen performance and breeding environment, the method comprising the following steps: obtaining the laying cycle information of each cage position, dividing the cage positions into different laying cycle groups; recording the laying performance data of each cage position; monitoring the cumulative effect of heat stress; constructing an individual dynamic baseline based on the laying performance history data of each cage position to obtain suspected abnormal cage positions; determining the abnormal cage positions and their types caused by environmental factors; generating a preventive control label according to the spread risk; and performing local control. Through dynamic grouping based on the laying cycle, differential monitoring is performed, the environmental threshold is set according to the age, the cumulative effect of heat stress is monitored, and finally the SIR model based on the time-varying transmission coefficient is used to predict the abnormal spread risk and generate differential control instructions, realizing early identification and advanced intervention of local abnormalities.

The invention discloses a cleaning device for a laying hen breeding feed trough, and relates to the technical field of laying hen breeding. The cleaning device comprises a carrying plate and is characterized in that a mashing mechanism is arranged at a feeding port of a suction mechanism; the adjusting mechanism is arranged on the loading plate, one end of the adjusting mechanism is fixedly connected with a scraping and washing mechanism, the scraping and washing mechanism is arranged on one side of the material suction mechanism, during working, the material suction mechanism sucks feed in the feed trough into the separation mechanism, and the separation mechanism automatically and effectively separates chicken feathers mingled in the feed from the feed; by means of the design, the problem that chicken feathers are polluted during feed recycling is solved, meanwhile, the situation that alimentary canals are injured due to the fact that chicken flocks peck the feed containing the chicken feathers is prevented, compared with manual cleaning or traditional cleaning equipment, the device can synchronously complete feed cleaning and chicken feather separation, the follow-up sorting procedure is reduced, the labor intensity is remarkably reduced, and the working efficiency is improved. And operation of workers is facilitated.

The application relates to the field of ventilation technology, in particular to an indoor circulating ventilation device for egg chicken breeding, which comprises a shell, a mounting shell fixedly connected to the outer wall of the shell, a mounting frame fixedly arranged in the shell, a filter plate slidingly arranged in the mounting frame, a cleaning assembly slidingly arranged in the mounting frame and used for cleaning the filter plate, a cleaning assembly arranged on the top of the shell, a control assembly arranged between the cleaning assembly and the cleaning assembly, a storage box arranged at the bottom of the shell, a recovery assembly arranged between the storage box and the cleaning assembly, an air extraction assembly arranged in the mounting shell, a fixing assembly arranged at the front end of the air extraction assembly in the mounting shell, and the filter plate is arranged on the top of the storage box through a mounting assembly. The filter plate can be cleaned under the cooperation of the cleaning liquid and the brush, the used cleaning liquid can be filtered and recycled for reuse, and resources are saved.

The utility model relates to the technical field of laying hen breeding, and discloses a disinfection spraying device for a laying hen breeding environment, which comprises a mounting seat, a pushing block is slidably connected in the left end of a hydraulic pipe, a piston is slidably connected in the right end of the hydraulic pipe, a pushing mechanism is arranged in a disinfectant box, and the pushing mechanism is connected with the piston. The pushing mechanism is used for changing the position of the piston, a transmission mechanism is arranged in the unfolding sliding block, supports are rotatably connected to the interiors of the multiple second rotating connecting blocks, unfolding mechanisms are arranged in the middles of the supports, and spraying mechanisms are fixedly connected to the bottom ends of the supports. And a liquid supply mechanism is fixedly connected to the middle of the top end of the mounting seat. According to the medical disinfection device, by means of the hydraulic principle, the pushing mechanism and the transmission mechanism, the device can be unfolded and stored through the gravity of the disinfectant box, the space utilization rate is increased, and in addition, the spraying mechanism can conduct spraying disinfection from outside to inside.

The application discloses a water treatment device for egg chicken breeding and particularly relates to the technical field of egg chicken breeding, and comprises a bottom box, the upper end of the bottom box is fixedly connected with an enclosure box, the front part of the left inner surface wall and the front part of the right inner surface wall of the enclosure box are fixedly and jointly installed with a drainage assembly, and the middle part of the left inner surface wall and the middle part of the right inner surface wall of the enclosure box are fixedly and jointly installed with a filtering assembly. The water treatment device for egg chicken breeding has the drainage assembly, so that the water in the enclosure box can be supplemented in time when the water in the water storage tank falls, the water level in the drainage assembly can be observed to determine the water level reduction degree in the enclosure box, when the water level in the drainage assembly reaches the lowest, the control adjusting assembly can be controlled to simultaneously control the opening of the blocking assembly, then the water is filtered through the filtering assembly when the input end of the water pump is used to pump water, the subsequent use is facilitated, and the waste of resources is reduced.

The application discloses a kind of light illumination methods for laying hens in later egg production stage.The method comprises: in the breeding process of laying hens in later egg production stage, using light source to emit blue light illumination or blue light and white light illumination to irradiate laying hens, so that the illumination can improve eggshell quality.The method of the application can up-regulate the expression of CaBP-D28k gene in eggshell gland of laying hens in later production stage, improve the ability of eggshell calcium deposition, regulate the secretion of parathyroid hormone PTH, calcitonin CT and other hormones, maintain the balance of blood calcium and blood phosphorus, and effectively improve the strength, thickness and weight of eggshell, so as to improve the eggshell quality of eggs produced by laying hens.The application can improve the calcium and phosphorus absorption capacity of laying hens, maintain the balance of calcium and phosphorus metabolism, and has low energy consumption, green energy-saving and environment-friendly advantages.

The utility model relates to the technical field of laying hen breeding, in particular to an inhabiting frame for laying hen breeding, which comprises two cross rods which are distributed in parallel and fixed with each other, four supporting rods are respectively and rotatably arranged below the corresponding cross rods in pairs, and first screws are arranged between the supporting rods and the cross rods in a threaded mode. Each inhabiting assembly comprises a threaded cylinder and a threaded rod which are in threaded installation, the cross rod and the supporting rod are rotationally installed and are limited and fixed in a first screw tightening mode, and therefore the height of the cross rod and the inclination angle of the supporting rod can be conveniently adjusted, and laying hens short in period can conveniently and smoothly stand on the inhabiting device; limiting and fixing are carried out after the positions of the threaded cylinders and the threaded rods are conveniently adjusted, namely, the distance between every two adjacent inhabiting assemblies is conveniently adjusted, laying hens with the long growth period cannot be mutually squeezed due to the too small distance, the laying hens can comfortably inhabit, and the laying hen inhabiting device has the advantages of being high in adjusting capacity and good in using effect.

The application provides application of a SNP genetic marker affecting chicken body weight at the onset of lay in genetic breeding of laying hens, and belongs to the field of animal genetic breeding and biotechnology.The SNP genetic marker affecting chicken body weight at the onset of lay comprises bw1egg_1 and / or bw1egg_2; the Ensembl number of the bw1egg_1 is rs318020581, corresponding to the 76311052th position of the positive strand of chromosome 4 in the chicken reference genome bGalGal1.mat.broiler.GRCg7b sequence published in NCBI, belonging to the 3rd intron of the gene C1QTNF7, and the base at the position is T or G; the Ensembl number of the bw1egg_2 is rs313708699, corresponding to the 74731889th position of the positive strand of chromosome 4 in the chicken reference genome bGalGal1.mat.broiler.GRCg7b sequence published in NCBI, belonging to the 8th intron of the gene SLIT2, and the base at the position is T or C.Both the bw1egg_1 and the bw1egg_2 are helpful to genetically improve the body weight at the onset of lay, and when applied to genetic breeding of chickens, are favorable to improving the body weight at the onset of lay of the laying hens and obtaining a laying hen breed with excellent performance in uniformity of the body weight at the onset of lay.

The invention discloses a high-nutrition chicken fermented feed formula containing dendrobium officinale tender leaves parasitized on taxus chinensis and taxus chinensis tender leaves, and belongs to the technical field of livestock and poultry feed. According to the formula, physiological requirements of chickens in different growth stages are taken as a core, dendrobium officinale tender leaves and taxus chinensis tender leaves parasitizing on taxus chinensis are taken as key functional auxiliary materials, basal feed, other functional auxiliary materials and fermentation strengthening elements are matched, and the feed is prepared through a specific fermentation process. Through fermentation, the absorption rate of nutritional ingredients in the auxiliary materials is increased, effective accumulation of natural flavor substances is achieved, meanwhile, the alkaloid content of taxus chinensis is strictly controlled to be smaller than or equal to 0.01%, and use safety is guaranteed. The feed meets the nutritional requirements of chickens and the taste and quality of chicken and egg products, and is suitable for the breeding requirements of different growth stages of broilers and different egg laying stages of laying hens.

The invention relates to lipid-lowering synbiotics as well as a preparation method and application thereof, and belongs to the technical field of laying hen breeding. The lipid-lowering synbiotics disclosed by the invention comprise the following components in parts by weight: 3-85 parts of a traditional Chinese medicine extract, 1-25 parts of probiotics, 3-30 parts of prebiotics, 1-16 parts of an enzyme preparation and 4-55 parts of dietary therapy components. The synbiotics disclosed by the invention not only can remarkably improve the lipid metabolism condition of laying hens, but also can remarkably prolong the egg laying peak period of the laying hens, improve the egg laying rate of the laying hens, reduce the cholesterol content in egg yolk, promote calcium and phosphorus absorption of the laying hens and reduce the paralysis rate of the laying hens. The economic benefit of laying hen breeding is comprehensively improved.

The utility model relates to the technical field of laying hen breeding, and discloses an automatic laying hen breeding device which comprises a breeding box, one side of the breeding box is fixedly connected with a placing plate, the top of the placing plate is fixedly connected with a spraying assembly, and the spraying assembly comprises a water storage tank, a water pump, a connecting pipe and a plurality of sets of atomizing nozzles. One side of the breeding box is fixedly connected with a temperature control assembly, the temperature control assembly comprises a controller and a temperature detection block, and the top of the breeding box is fixedly connected with three sets of cooling fans. According to the automatic laying hen breeding equipment, through the arrangement of the manure output assembly, during breeding, manure discharged by laying hens penetrates through a filter plate and enters a conveying belt, the conveying belt drives the manure to move, a manure scraping plate scrapes the manure on the conveying belt when the conveying belt moves, and the scraped manure falls into a manure collecting box; therefore, feces can be collected and treated, and the situation that feces and urine are accumulated to generate a large number of bacteria which affect the health of laying hens is avoided.

This invention belongs to the field of molecular breeding technology and provides a method based on... YIPF1 Molecular breeding methods and applications for inhibiting egg production decline in laying hens using the eQTL gene. This invention combines molecular markers with... YIPF1 Gene expression levels have a regulatory role; the combined molecular markers are located at Chr8:24801464 and Chr8:24802450 loci in the chicken genome, respectively. This invention breaks through the traditional single-trait research paradigm, integrating multidimensional omics and phenotypic data to identify genes from a systems biology perspective. YIPF1 The gene and its regulatory site combination, Chr8:24801464 and Chr8:24802450, serve as key targets in the process of tissue functional decline in laying hens. This gene possesses cross-tissue, dynamically correlated early warning characteristics, providing a reliable tool for early assessment and precise breeding of anti-aging traits in laying hens, and has significant application value for achieving the goal of an ultra-long laying cycle.

The laminated breeding cage comprises a breeding cage frame, cage bins are evenly distributed in the breeding cage frame, the vertically adjacent cage bins are communicated, first iron wire nets are evenly distributed in bin openings in the front, the rear, the left and the right of each layer of cage bin respectively, and second iron wire nets are arranged at the bottom ends of the interiors of the cage bins respectively. Excrement baffles are arranged at the bottom ends of the interiors of the cage bins, and the excrement baffles are located at the lower ends of the second iron wire nets in the same cage bin. The excrement cleaning mechanism comprises a sliding block, a sliding block, a supporting rod, a push plate, a sponge roller and a rotating shaft, sliding grooves are formed in the front side wall of the cage bin, the sliding blocks are slidably connected into the sliding grooves, and sliding grooves are formed in the rear side wall of the cage bin. Excrement generated by laying hens is automatically cleaned, participation of breeders is reduced, and harmful gas generated due to the fact that the excrement is not cleaned for a long time is avoided.

To provide a method that allows for delaying the start of egg-laying in laying hens and achieving good egg-laying results after the delay. [Solution] A method for delaying the start of egg-laying in laying hens, comprising maintaining the weight of adult hens after 120 days of age at 120% or less of the standard weight of the adult hens at 120 days of age for a predetermined period, and adjusting the lighting time and illuminance.