46 results about "Egg laying duck" patented technology

The invention discloses a caged laying duck head key feature detection method based on an improved yolov8 model in the technical field of computer vision, and the method comprises the steps: 1, collecting the image data of caged laying ducks in a poultry enterprise production base; step 2, performing data cleaning, image preprocessing and expert-assisted marking of target detection frames of different parts, including the head, the beak and the eyes, on the acquired image, and constructing a caged laying duck head key feature detection data set; and step 3, aiming at the image data of the caged laying ducks, firstly performing pixel removal on the caged laying duck main body shielding cage net, then complementing the removed pixels, and finally constructing a caged laying duck head key feature detection data set after data enhancement according to the mapping relation between the image and the label. The key feature parts of the head of the cage-rearing laying duck can be detected more quickly, and the detection accuracy is improved.

The invention relates to the technical field of genetic engineering, in particular to a long-chain RNALnc012227 for inhibiting transmission of salmonella enteritidis ovary and application of the long-chain RNALnc012227 in prevention and control of salmonella enteritidis infection. The invention relates to a long-chain RNA (Ribonucleic Acid) Lnc012227 for inhibiting transmission of salmonella enteritidis ovary. The Lnc012227 provided by the invention can be used for indirectly regulating the expression of MAP3K8, activating NF-kappa B and MAPK signal channels and enhancing the inflammatory response of a host, so that S.Enteridis infection is controlled. The discovery not only provides a new understanding of molecular level for understanding the infection mechanism of salmonella in the duck body, but also provides a potential target spot for developing a new treatment strategy, and is helpful for reducing egg-laying duck ovarian infection and duck egg pollution caused by salmonella.

The invention discloses a method for non-destructively identifying the gender of a transformed young duck egg based on a singing tube nuclear magnetic image, and belongs to the technical field of poultry egg detection.The method comprises the steps that a low-field nuclear magnetic resonance technology is utilized, a breeding duck egg is positioned in a nuclear magnetic system, the optimal imaging section of a singing tube is determined, an image is collected and preprocessed, and a high-quality singing tube nuclear magnetic image is obtained; and through analyzing relaxation characteristics, inverting nuclear magnetic signals to identify a buzzer tube structure and extracting characteristics, finally constructing a gender decision-making model, and combining physical constraints to obtain a gender discrimination result as a sorting reference. According to the method, lossless, early-stage and high-accuracy sex identification is realized through a special imaging technology and algorithm by utilizing sex difference nuclear magnetic characteristics of a singing tube structure, hatching and breeding strategies can be optimized in laying duck and meat duck breeding, and intelligent development of the industry is promoted.

The invention relates to a fermentation type laying duck feed additive and a preparation method and application thereof, the preparation method comprises the following steps: mixing a fermentation substrate with a compound bacteria solution, and carrying out anaerobic fermentation to obtain the fermentation type laying duck feed additive, the fermentation substrate comprises brown rice, rice bran, sunflower meal, manioc waste and corn flour; the compound bacteria comprise bacillus licheniformis, lactobacillus bulgaricus and lactobacillus acidophilus. The laying duck feed additive is obtained by fermenting a substrate with a specific formula through specific compound bacteria, compared with the prior art, the phytic acid content and the crude fiber content are obviously reduced, and the crude protein content and the lactic acid content are obviously improved; after the laying ducks eat the feed, the immunity and disease resistance of the laying ducks can be obviously improved, and meanwhile the quality of duck eggs is improved.

The invention discloses a seed production method of a high-yield laying duck auto-sexing commercial line. The accuracy of the method is close to 100% and is obviously higher than that of artificial anal turning for male and female identification; the speed is high, and the production efficiency can be improved by 5-10 times; the labor intensity is low, and fatigue of hands, eyes and the like is avoided; the technical requirement is low; and disease transmission is avoided. According to the seed production method provided by the invention, the low heritability character heterosis is fully utilized, the egg laying performance is high, and the egg yield of 66 weeks old is close to 300; eggshells are green shells and accord with consumption preferences of Chinese people; the feather color of the adult female duck is light brown yellow, slaughtering and processing are facilitated, and the value of the obsolete duck is improved; the mode is suitable for large-scale popularization and application.

The duck egg collecting mechanism comprises a breeding cage body and a duck egg collecting frame arranged on the right side of the breeding cage body, an opening and closing door is arranged on the front side of the breeding cage body, and a bottom plate with an inclined angle is arranged at the bottom of the breeding cage body. A connecting plate is arranged at the left end of the duck egg collecting frame, the right end of the connecting plate is of an arc-shaped structure, an arc-shaped rail groove is formed in a gap between the right end of the connecting plate and the right wall of the duck egg collecting frame, and buffering cloth is arranged on the bottom side of the top of the inlet end of the arc-shaped rail groove. A push-and-pull drawer is arranged at the bottom of the duck egg collecting frame, a first supporting plate is arranged at the top of the middle end of the push-and-pull drawer, the bottom of the left end of the first supporting plate is fixedly connected with the top of the second buffering cloth, a collecting groove is formed in the push-and-pull drawer, and the inlet end of the collecting groove is connected with the outlet end of the arc-shaped rail groove. The egg laying of the laying ducks is not influenced.

The invention relates to a GPR107 gene detection method related to duck egg weight traits and application, and belongs to the technical field of biology. By detecting the genotype of the 7909242th basic group of the No.18 chromosome of the GPR107 gene, the egg weight of a T / T genotype individual is higher than that of a T / C genotype individual and that of a C / C genotype individual, the egg weight of the T / C genotype individual is higher than that of the C / C genotype individual, and the method is used for screening egg weight indexes of high-quality laying ducks, and has the beneficial effects that the duck egg weight character can be efficiently and quickly identified, and the quality of the high-quality laying ducks is improved. The seed selection accuracy is improved, the breeding progress is accelerated, and the breeding cost and the production cost are reduced. In addition, the detection method disclosed by the invention is simple and easy to operate, can be carried out in a laboratory, and can also be applied to a genome breeding technology.

The utility model relates to the technical field of laying duck breeding, in particular to an organic laying duck breeding foodstuff mixing device which comprises a stirring tank and a stirring screw rod, a pulverizer is fixedly installed on one side of the stirring tank, pulverizing blades and a cutter which are used for pulverizing operation are rotatably connected into the pulverizer, and pulverized materials pass through a discharging port formed in the pulverizer and are mixed with the stirring screw rod. Throwing into a stirring tank for mixing; a feeding groove is formed in the side edge of the crusher, and the crushing blades and the cutter are perpendicular to the axis of the feeding groove. The pulverizer is installed on one side of the stirring tank, so that materials such as straw can be added in the feed stirring process, the added straw is fed into the pulverizer through the feeding tank and is cut into small sections under the action of the cutter, and then the straw is further pulverized through the pulverizing blades; the crushed straws can be thrown into the stirring tank through the discharge port and are mixed with crops such as corn in the stirring tank, so that organic feeding is realized, and the convenience of feed stirring is improved.

This invention relates to a method and application for detecting the GPR107 gene, which is associated with duck egg weight traits, and belongs to the field of biotechnology. This invention detects the genotype of the GPR107 gene at position 7909242 on chromosome 18, determining that individuals with the T / T genotype have higher egg weights than those with the T / C and C / C genotypes. Specifically, individuals with the T / C genotype have higher egg weights than those with the C / C genotype. Using this method to screen for high-quality laying ducks offers the advantages of efficient and rapid identification of duck egg weight traits, improving selection accuracy, accelerating breeding progress, and reducing breeding and production costs. Furthermore, the detection method disclosed in this invention is simple and easy to operate, can be carried out in a laboratory, and can also be applied to genomic breeding technology.

The application discloses application of Fagopyrum cymosum root powder in preparation of products for improving egg quality or intestinal health of laying ducks, and belongs to the technical field of feed additives. The application provides application of Fagopyrum cymosum root powder in preparation of products for improving egg quality or intestinal health of laying ducks, and the Fagopyrum cymosum root powder can improve eggshell strength, yolk color and eggshell proportion, improve the content of aspartic acid, threonine, glutamic acid, glycine, cystine and leucine in yolk, improve the content of arachidonic acid and arachidonic acid in yolk, and reduce the content of saturated fatty acid in yolk; the Fagopyrum cymosum root powder can improve the activity of maltase in the mucous membrane of the jejunum of laying ducks, and can improve the diversity and abundance of intestinal flora of laying ducks. The application provides a new strategy for improving egg quality or intestinal health of laying ducks.

The utility model relates to the technical field of laying duck breeding, and discloses an intelligent feeding device for laying duck breeding, which comprises a base, a breeding cage, a feed trough and a feeding component, the two ends of the base are fixedly connected with supporting plates, the breeding cage and the feed trough are respectively mounted between the two supporting plates, the breeding cage is positioned on one side of the feed trough, and the feeding component is positioned on the other side of the feed trough. Two partition plates are arranged in the feed trough, the two partition plates evenly divide the feed trough into three cavities, the feeding assembly comprises a fixing plate installed at the tops of the two supporting plates, a feed box is fixedly arranged on the fixing plate, three discharging pipes are arranged at the bottom of the feed box in the diameter direction of the feed box, and a feeding shell is fixedly connected to the lower portions of the discharging pipes; the feeding shell is horizontally arranged and fixedly connected with one supporting plate, a feeding assembly is arranged in the feeding shell, the feeding shell is located above the feed trough, and a quantifying assembly is arranged between the feeding shell and the feed trough. The feeding device can achieve quantitative feeding of feed and has the effect of preventing waste caused by excessive feed.

The invention discloses a full-automatic breeding cage for laying ducks, which relates to the field of breeding of laying ducks and comprises a support which is of a cage body structure defined by a pair of symmetrically arranged side fence nets and a pair of symmetrically arranged main fence nets; the two feeding trough assemblies are symmetrically arranged on the two sides of the support; the bottom plate assembly is arranged at the bottom of the bracket; the egg collecting groove is fixedly formed in the front side of the support, and the upper end face of the egg collecting groove is flush with the upper end face of the bottom plate assembly; according to the invention, mechanical linkage is driven by daily treading of laying ducks, so that self-cleaning of the bottom plate and pushing and dewatering of feces are realized.

The application relates to the technical field of traditional Chinese medicine preparation, and particularly discloses a compound traditional Chinese medicine preparation for targeting egg duck and goose egg cytoplasmic disease, which comprises the following components: white head, Coptis chinensis, Huangqi, Phellodendron amurense, wine Danpi, bran-fried peach kernel, Chinese perilla, pomegranate peel, liquorice, honeysuckle, Andrographis, figwort, emblic, ginger, fried atractylodes, fried safflower, Xianhecao, spiny amaranth, and Poria cocos. Through the combination of monarch, minister, assistant and messenger, the core effects of heat-clearing and detoxifying, blood-cooling and dysentery-stopping, and dampness-drying and insect-killing of the medicines are synergistically exerted, the pathogenesis characteristics of the egg cytoplasmic disease are accurately targeted, blood stasis and blood circulation are promoted to eliminate the swelling of the lesion, and the intestinal mucosa damage is repaired to stop bleeding, the symptoms of hematochezia, diarrhea and oviduct inflammation of the egg duck and goose caused by the egg cytoplasmic disease are effectively relieved, the problems of the decreased antibiotic effect, drug residue, bacterial flora disorder and food safety risk are effectively solved, and the compound traditional Chinese medicine preparation has the remarkable progress of drug resistance, safety, no residue, intestinal protection and green environmental protection.

The application relates to the technical field of duck breeding, and provides an intelligent marking and egg laying breeding device for breeding ducks, which comprises a net bed and an egg laying row nest, the egg laying row nest is arranged around the net bed, padding is arranged in the egg laying row nest, and the device further comprises independent egg laying nests, the independent egg laying nests are arranged in the egg laying row nest, and the device has the advantages that the two times of weighing when a duck enters and walks out of the independent egg laying nest are compared, when the difference between the two times of weighing is greater than or equal to a specified value, the duck is defined as having laid an egg, the pigment in a pigment spray tank can be sprayed on the duck through the perforation to mark the duck, the color on the duck can be observed in the daily feeding process to accurately lock the target duck that has not laid an egg for a long time, the duck cannot be caused to have persistent physiological stress and local infection, the duck that has low egg laying efficiency can be timely eliminated, and the feed cost and environmental pollution of a breeding farm can be reduced.

The utility model relates to the technical field of feed processing, in particular to a laying duck feed spraying device which comprises a spraying device body, a feeding port is formed in the surface of the spraying device body, a conveying belt is in transmission connection with the interior of the spraying device body, a hopper is fixedly connected with the surface of the feeding port, and a motor is fixedly connected with one end of the surface of the hopper. The output end of the motor is rotatably connected with a rotating cylinder, the surface of one side of the spraying device body is fixedly connected with a limiting plate, a round rod is inserted into the surface of the spraying device body, the surface of the round rod is fixedly connected with a scraping plate, one end of the round rod is in threaded connection with a fixing plate, the other end of the round rod is inserted with a pulling plate, and the surface of the pulling plate is fixedly connected with a clamping block; the device has the beneficial effects that by arranging the rotary drum on the surface of the hopper, control over the feed flow and preliminary dispersion of feed are achieved, by arranging the clamping block and the limiting groove, flexible adjustment of the angles of the round rod and the scraper blade is achieved, the spraying effect is improved, by arranging the limiting plate, rapid maintenance and replacement of the scraper blade are achieved, and the production efficiency is improved.

The present application relates to the fields of animal nutrition and microbial fermentation technology, and particularly relates to a strain of Saccharomyces boulardii, a microecological preparation thereof and application thereof.The Saccharomyces boulardii is named as NCUTY 002, has been preserved in China Center for Type Culture Collection, and the preservation number is CCTCC NO:M 2025648.The Saccharomyces boulardii NCUTY 002 screened in the present application has excellent acid tolerance (pH≤2.5) and bile salt tolerance (0.5%), and shows high self-aggregation capacity, so that it can survive and stably colonize in the extreme environment of digestive tract of egg ducks, and can be used as a special feed additive for egg ducks.

The invention belongs to the technical field of preparation of feed additives, and relates to a microcapsule embedding composite essential oil preparation device, a microcapsule embedding composite essential oil preparation method and essential oil, the microcapsule embedding composite essential oil preparation device provided by the invention is characterized in that a premixing stirrer, a vacuum container, an emulsification assembly, a centrifugal pump and a spray drying granulator are connected through a pipeline conveying device; through a conveying pipe and a stirring tank of the pipeline conveying device, conveying, adding and mixing of materials are achieved, and preparation of the composite essential oil is achieved. Meanwhile, the microcapsule embedded compound essential oil for the feed is prepared by compounding cinnamyl aldehyde, eugenol, thymol, carvacrol and tea tree essential oil according to a certain proportion, the problem that single essential oil is single in effect is solved, and the microcapsule embedded compound essential oil has the effects of resisting oxidation, reducing stress and promoting reproductive organ development of laying ducks, so that the laying rate is increased, and the egg quality is improved.

The utility model discloses a laying duck breeding device, and relates to the technical field of poultry breeding. Comprising supports arranged on the two sides of a duck cage frame, transmission rollers arranged on the supports, a manure belt wound around the transmission rollers, an upper layer carrier roller arranged between the transmission rollers and used for lifting the manure belt on the upper portion, and a lower layer carrier roller located below the upper layer carrier roller and used for lifting the manure belt on the lower portion. The upper-layer carrier roller comprises a horizontally-arranged first main body, inclined main bodies connected to the two sides of the first main body and a first sleeve arranged on the first main body in a sleeving mode, and the manure belt on the upper portion is pressed on the first sleeve; the lower-layer carrier roller comprises a horizontally-arranged second main body and a second sleeve arranged on the second main body in a sleeving mode, and the manure belt on the lower portion is pressed on the second sleeve. According to the laying duck breeding device, the friction force between the manure belt and the upper-layer carrier roller and the friction force between the manure belt and the lower-layer carrier roller can be effectively reduced, and the service life of the manure belt is effectively prolonged.

This utility model relates to the field of poultry farming equipment technology, and in particular to an environmentally friendly, stackable, detachable, and easy-to-clean duck cage. This utility model provides an environmentally friendly, stackable, detachable duck cage that allows for convenient and quick assembly and disassembly of the cage components, saving manpower and improving cleaning efficiency. The environmentally friendly, stackable, detachable, and easy-to-clean duck cage includes a support frame and duck cage components, with the duck cage components located on the upper part of the support frame. This utility model achieves the effect of convenient and quick assembly and disassembly of the duck cage components, saving manpower and improving cleaning efficiency by pulling the frame outwards, causing the limiting rod to detach from the cage body, the squeezing block to detach from the limiting frame, and the limiting frame to move downwards and no longer restrict the guardrails. Then, the cage body can be removed, and the guardrails and partitions can be removed from the cage body for cleaning.

The invention belongs to the field of feed, and discloses application of corn distillers' grains and soluble substances thereof as a laying duck feed additive for reducing the malondialdehyde content of yolk of duck eggs, the corn distillers' grains and the soluble substances thereof are used as the feed additive, the malondialdehyde content of the yolk in fresh duck eggs can be reduced in a positive correlation manner, and the malondialdehyde content of the yolk of the duck eggs can be reduced. Furthermore, the hard heart rate of the salted eggs is reduced, and meanwhile, the elasticity, the stickiness and the chewiness of the salted eggs can be improved. Meanwhile, the invention further provides laying duck feed and salted eggs.

The utility model discloses an automatic spraying device for dry breeding laying ducks, and belongs to the technical field of poultry breeding corollary equipment. The device comprises a duck shed bottom plate, the top of the duck shed bottom plate is provided with drainage grooves which are staggered transversely and longitudinally, and meanwhile, a grid floor is fixedly arranged; a mounting frame is fixedly arranged on the rear side of the top of the duck shed bottom plate, guide rail frames distributed at equal intervals are fixedly arranged on the front side of the mounting frame, sliding pipe bases are slidably arranged at the bottoms of the guide rail frames, and spraying flat sprayers are fixedly arranged at the bottoms of the sliding pipe bases and turn forwards and downwards. The laying duck dry breeding system can meet physiological needs and living habits of laying ducks during dry breeding, achieves the good effects that drinking water, xia water and shower water are independently supplied, and the whole process is clean, the shower water is collected in a centralized mode through the drainage ditch, harmless treatment and resource utilization are achieved, water resources are scientifically utilized, and the ecological environment is efficiently protected.

The utility model discloses a ventilating and deodorizing system for laying duck breeding. The deodorizing system comprises a deodorizing device, a ventilating unit, a power supply system and a deodorizing and dosing system, the deodorization device comprises a deodorization box body; the ventilation unit comprises an air inlet and a fan; a water curtain and a water-absorbing sponge are vertically arranged in the middle of an inner cavity of the deodorization box body, a water pipe is vertically arranged between the water curtain and the water-absorbing sponge, a plurality of nozzles are mounted on the water pipe, the water-absorbing sponge is arranged on the rear side of the water pipe, and the power supply system comprises a solar photovoltaic panel and a storage battery; the deodorizing and dosing system comprises deodorizing and dosing equipment and a pipeline, and the deodorizing and dosing equipment is communicated with the spray head through the pipeline; the output end of the storage battery is respectively communicated with the fan, the deodorization water pump and the deodorization dosing equipment to supply power to the fan, the deodorization water pump and the deodorization dosing equipment. The power-on problem is solved, implementation in the suburb is facilitated, the water absorption sponge is arranged on the rear side of the water pipe, and the water absorption sponge can absorb part of splashed water sprayed by the spray head; and the spraying of a deodorant can be increased through a spray head by virtue of the deodorizing and dosing equipment.

The utility model relates to the technical field of breakage-proof devices, in particular to an automatic collecting and breakage-proof device for eggs laid by laying ducks. According to the technical scheme, the egg laying device comprises a base and an egg laying nest and further comprises a fixing frame fixedly installed on the base, a sliding groove is formed in the bottom of the fixing frame, a sliding block is installed in the sliding groove in a sliding mode, a negative pressure pump is arranged at the bottom of the sliding block, and a collecting groove is fixedly formed in the position, below the fixing frame, of the base. And a communicating groove is fixedly connected to one side of the collecting groove. According to the egg laying device, excrement on the surfaces of collected eggs can be automatically cleaned and removed, the excrement can be collected and treated in a centralized mode, the situation that due to accumulation of the excrement, the surface friction of the elastic buffering cushion is increased, and the eggs roll on one side or stop suddenly due to uneven resistance during rolling is avoided, and the protection safety of the eggs is improved.

The utility model provides a laying duck nest device for duck breeding, which is characterized in that a duck nest is fixed at the top of a floating body, the outer wall of the floating body is obliquely arranged, and the interior of the floating body is hollow; the floating body is placed in water for breeding ducks, the floating body enables the duck nest to float on the water surface, and when the ducks need to lay eggs, the ducks swim to the position close to the floating body from the water and climb up the floating body to lay eggs in the duck nest.

The utility model discloses an automatic mixed feed's egg duck breeding cage device relates to egg duck breeding cage device technical field, including cage body, mixing jar, feed trough and egg collecting groove, the left side of cage body is provided with the food opening, is provided with the mixing jar above food opening, wherein mixing jar fixed mounting is in cage body, is provided with feed trough below food opening, wherein feed trough fixed mounting is in cage body, the rear end of mixing jar is provided with servo motor, wherein servo motor fixed mounting is on mixing jar, and servo motor power output end is fixedly connected with the rotating shaft, wherein the rotating shaft rotation is connected on mixing jar, and the outer wall of rotating shaft is provided with a plurality of groups of stirring rod, wherein mixing jar carries servo motor drive stirring rod, and the automatic completion feed mixing replaces the time -consuming and uniformity defect of manual mixing, and the accurate control of electric control valve discharges, reduces the waste of feed spilling, and the nutrition formula of adaptation egg duck different growth stages, guarantees the balanced nature of eating.

The invention relates to the technical field of poultry breeding and poultry egg production, in particular to nutrient-enriched healthy duck eggs as well as a production method and a pickling method thereof. According to the production method of the nutrition-enriched healthy duck eggs provided by the invention, healthy Shaoxing ducks are selected as the laying ducks, the contents of unsaturated fatty acid, selenium and xanthophyll in the duck eggs can be pertinently increased by feeding the duck eggs with the nutrition-enriched feed additive and the probiotics, and the proportion of EPA / DHA is relatively high. According to the pickling method of the nutrition-fortified healthy duck eggs, the prepared nutrition-fortified fresh duck eggs serve as raw materials, the pickling process is optimized, degradation of nutrient substances is effectively reduced, the retention rate of selenium, xanthophyll and polyunsaturated fatty acid in the salted duck eggs is high, meanwhile, the salted duck eggs have good pickling quality, and the salted duck eggs are rich in nutrition. The prepared salted duck eggs are high in oil yield and appropriate in salt content.

The present invention relates to a key gene for the differentiation of duck meat and egg traits and a method for mining the key gene based on whole genome sequencing. The key gene is the duck SIK1 gene, and its nucleotide sequence is shown in SEQ ID NO: 1. The present invention uses a method for analyzing the key genes in the domestication process of duck meat traits and egg traits using whole genome resequencing, and discovered the key gene SIK1 that affects the differentiation and domestication process of laying ducks and meat ducks. The gene SIK1 plays a role in regulating sugar metabolism and cell proliferation. The present invention used whole genome resequencing technology to assemble the genome of Jinding duck for the first time, and compared it with the genomes of other duck species such as Beijing duck, mining another key gene SIK1 gene for the differentiation of duck meat and egg traits, which is helpful for the molecular breeding of ducks and provides a new idea for the future exploration of key genes for the differentiation of meat / laying duck traits.

The present application relates to a kind of molecular marker set for egg duck breeding, the molecular marker set includes multiple single nucleotide polymorphism (SNP) sites, the multiple SNP sites are determined based on the physical location of egg duck reference genome ZJU1.0, and the multiple SNP sites include functional SNP site and background SNP site;Wherein, the functional SNP site is significantly related to the reproductive trait phenotype of egg duck, the background SNP site is screened based on the principle of uniform distribution of genome.The set of the present application is directly associated with important breeding target traits, improves the accuracy of genomic selection, ensures that the genetic information in the whole genome range is evenly captured, enhances the robustness of breeding value estimation and the coverage of whole genome genetic variation.

The application discloses a kind of based on trumpet nuclear magnetic image's sex nondestructive identification method of turning duckling eggs, belong to poultry egg detection technical field, this method uses low-field nuclear magnetic resonance technology, first in nuclear magnetic system Positioning egg and determine the optimal imaging section of trumpet, image is collected and preprocessed to obtain high-quality trumpet nuclear magnetic image, then through analysis relaxation characteristics, inversion nuclear magnetic signal identifies trumpet structure and extracts features, finally constructs gender decision model, combined with physical constraint obtains gender discrimination result and is sorted as reference.The application uses the nuclear magnetic characteristics of the gender difference of trumpet structure, realizes nondestructive, early, high-accuracy gender identification through special imaging technology and algorithm, can optimize hatching and breeding strategy in egg duck and meat duck breeding, promote the intelligent development of industry.