114 results about "Egg laying" patented technology

The utility model discloses a goose egg laying recording device, which relates to the technical field of poultry farming equipment and comprises an egg laying mechanism, an egg falling mechanism is arranged on the rear side of the egg laying mechanism, a buffer counting mechanism is arranged on the rear side of the egg falling mechanism, a collecting mechanism is arranged at the bottom of the buffer counting mechanism, and the egg laying mechanism comprises an egg laying box. A box inlet inclined plate is fixedly installed below the front side of the egg laying box, a plurality of anti-skid grooves are formed in the top of the box inlet inclined plate, an egg rolling inclined plate inclining backwards is fixedly installed at the bottom of the inner wall of the egg laying box, and an egg outlet groove penetrating through an inner cavity of the egg laying box is formed in the lower portion of the rear side of the egg laying box. The collecting box, the falling egg collecting tank, the recycling water tank, the water outlet hole, the water spraying box, the water suction pump, the water suction hose and the water spraying head are matched with one another, so that the number of each heavy goose egg can be recorded and collected without damage, the integrity of the goose eggs during automatic recording and collecting is effectively improved, and loss is avoided.

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 application discloses an evaluation method of egg laying performance of Leizhou black duck. The application is aimed at Leizhou black duck, and finds that 5 SNP sites are significantly related to the age of starting laying of Leizhou black duck; 2 SNP sites are extremely significantly related to the body weight of starting laying of Leizhou black duck. It is further found that a haplotype has low starting laying age, high starting laying body weight and high egg laying quantity, so that individuals with low starting laying age, low starting laying body weight and high egg laying quantity can be screened from the advantageous genotypes of the 7 SNP sites, so as to improve the egg laying performance and economic benefits.

The utility model relates to the technical field of egg laying buffer bottom plates, and discloses a coop body egg laying behavior induction type buffer bottom plate structure which comprises a coop and a buffer bottom plate, a protection mechanism is arranged on the right side of the buffer bottom plate, and the protection mechanism comprises a sliding block, a connecting spring, a telescopic rod and an elastic cushion. The left side of the sliding block and the right side of a buffering bottom plate are fixedly installed. According to the coop body egg laying behavior induction type buffer bottom plate structure, through the use of the buffer bottom plate, the sliding blocks, the buffer grooves, the connecting springs and the telescopic rods, when eggs fall, when the eggs move to the upper surface of the buffer bottom plate, the eggs are inducted, the connecting springs and the telescopic rods are driven to be compressed, automatic induction buffering can be achieved, and the effect of safely collecting the eggs is achieved; and through the use of buffer convex points, a buffer bottom plate and an elastic pad, the problem of how to carry out automatic induction protection during egg collection is solved, and the effect of being safer during egg collection can be achieved.

The invention discloses laying hen feed immune peptide and a preparation method thereof, and belongs to the technical field of laying hen feed additives. The immune peptide is prepared from the following raw materials in percentage by mass: 29% of threonine, 25% of chili meal, 20% of Chinese prickly ash seeds and 26% of Chinese prickly ash leaf powder. The preparation method comprises the following steps: respectively crushing the raw materials until the particle size is 0.3-0.8 mm, mixing the zanthoxylum bungeanum seed powder, the pepper meal powder and the zanthoxylum bungeanum leaf powder in sequence, and then adding the threonine powder, and mixing for 25-30 minutes to obtain a finished product. The feed has the core advantages that by utilizing the synergistic effect of natural active ingredients in the threonine, the pepper meal, the Chinese prickly ash seeds and the Chinese prickly ash leaf powder, the immune function of laying hens is remarkably enhanced, the morbidity is reduced, meanwhile, the laying rate of the laying hens, the eggshell quality and the egg nutritional value are improved, and the raw materials are natural, free of residues and high in safety.

The invention discloses a chicken FMNL1 gene promoter region molecular marker, a detection reagent and application thereof, and belongs to the technical field of molecular genetics. According to the invention, two SNP loci significantly associated with egg laying performance are identified in a chicken FMNL1 gene promoter region, and the two SNP loci generally exist in a plurality of different varieties of chickens and present a consistent effect trend between different genotypes. Based on the SNP locus identified by the invention, the invention develops and designs a chicken FMNL1 gene promoter region molecular marker and a corresponding detection reagent. The method can be used for accurately identifying the laying day age and egg laying traits of the chickens in the early stage, and has important significance on breeding of high-yield laying hens.

This invention discloses a method for calculating spawning ground suitability that takes into account hatching capacity. Based on the habitat factor suitability curve for fish spawning periods, the method calculates the spawning ground suitability during the spawning period. Then, considering the time required for egg drift and hatching, it calculates the drift and hatching period suitability. The combined method yields a comprehensive spawning ground suitability that balances hatching capacity. This method comprehensively considers both habitat factors during the spawning period and the time required for drift and hatching, resulting in a spawning ground suitability that better meets the needs of fish spawning and hatching. It considers not only the requirements for water depth, flow velocity, and water temperature during the spawning period but also the requirements for water flow velocity and drift distance for egg drift and hatching after spawning. This method is of great significance for more scientifically guiding the selection of spawning ground restoration locations.

The invention discloses a method and a system for intelligently measuring the egg yield of group breeding geese. The method comprises the following steps: synchronously acquiring RGB (Red, Green and Blue) video and thermal imaging video data of the breeding geese; using a pre-trained breeding goose behavior identification model and a breeding goose individual detection model to intercept RGB video and thermal imaging video data of the breeding goose in a preset time period; analyzing the intercepted RGB video and thermal imaging video data, determining the individual ID of the breeding goose and detecting a newly laid goose egg; the behavior categories of the breeding geese in the egg laying process of the breeding geese are counted, the individual IDs, the egg laying videos and the egg laying number are associated, and a breeding goose egg laying comprehensive database is constructed. By utilizing the embodiment of the invention, accurate, automatic and all-weather measurement of the egg laying behavior of the individual breeding geese in the group breeding environment can be realized, the problems of low efficiency of a manual mode and poor environmental adaptability of a traditional automatic method are effectively solved, and a comprehensive and reliable data basis is provided for refined breeding and breeding management of the breeding geese.

The application discloses a SNP molecular marker combination of a FGF9 gene promoter region related to chicken egg laying traits and application thereof, and belongs to the technical field of molecular genetics. The application finds that multiple SNP sites exist in the FGF9 gene promoter region of a chicken through screening of SNPs between breeds, and for the first time, carries out correlation analysis on the SNPs genotypes of a Jining Hundred-day chicken population and egg laying traits, finds that the GA ‑2177 genotype individual corresponds to more maximum consecutive egg laying numbers; the GA ‑2289 genotype individual corresponds to an earlier age of first egg laying; and the GA ‑3906 genotype individual corresponds to more total egg laying numbers. Therefore, through detection of the three molecular markers related to the egg laying traits, not only is the method simple and fast, but also it is helpful to breed a high egg laying chicken breed, and provides favorable help for breeding work.

The invention relates to the technical field of environment monitoring, in particular to an internet-of-things-based breeding environment monitoring system for pond turtles, and the system comprises a turtle movement trajectory tracking module which is used for collecting real-time images of an incubator, comparing pixel differences among continuous image frames to carry out background subtraction, and recognizing a moving foreground target. According to the method, the pixel differences between image frames are continuously compared, the geometric center point of the moving target is calculated, continuous recording of the moving tracks of the water tortoise individuals in the cultivation box is achieved, the moving area is gridded, the occurrence probability is calculated by counting the frequency that coordinates fall into all units, an objective data basis is provided for environment optimization, and the method is suitable for large-scale popularization and application. Meanwhile, multiple groups of temperature sensors are arranged at key positions such as a spawning area and a drying platform, multiple paths of environment sensing redundant numerical values are obtained, the state range is predicted according to a water body thermal inertia model, multiple paths of readings are updated and calibrated, deviation data are effectively recognized and eliminated, and the reliability of environment monitoring data and the fault tolerance of the system are improved.

The application discloses a SNP marker related to a chicken age of first egg laying character and application thereof, and belongs to the technical field of molecular genetics and gene breeding. The SNP marker is located at the position of 3298230 bp of chicken chromosome 27, the reference genome version is GRCg7b, has G / A polymorphism, and the individual with the AA genotype at the position has the early age of first egg laying character compared with other genotypes. The SNP marker can be applied to the breeding of excellent breeding hens, can significantly shorten the age of first egg laying of a population, and has great economic application value.

The application discloses a SNP molecular site, a detection primer thereof and application in predicting high and low of egg laying traits of chickens. The application compares and analyzes SNP typing data of different egg laying performance chicken breeds, and carries out association analysis by combining phenotype data related to egg laying traits, finally identifies a SNP marker site significantly related to egg laying number of chickens at 300 days old, which corresponds to sequence information 61,577,523 bp of chromosome 1 of a chicken reference genome GRC7b version published in an Ensembl website, wherein a base at the position is A or G, and the SNP number is rs740376220. The application further provides a detection primer for detecting the genotype of the SNP molecular site. The SNP marker site and the detection primer thereof can be used for accurately predicting high and low of egg laying traits of chickens, and can provide technical support for molecular marker assisted selection breeding of egg laying traits of chickens, shorten breeding period and improve breeding efficiency.

The invention discloses Lap3a, Lap3b and Lap3c genes of bactrocera cucurbitae and an application of the Lap3a, Lap3b and Lap3c genes. The space-time and tissue expression profiles of the Lap3a, Lap3b and Lap3c genes of the bactrocera cucurbitae show that the three genes are specifically and highly expressed in testis of male bactrocera cucurbitae, especially in transformation regions in testis tissues of adult bactrocera cucurbitae. The Lap3a, Lap3b and Lap3c genes play important functions in the process of participating in maintaining the male reproduction of the bactrocera cucurbitae, when the Lap3a, Lap3b or Lap3c genes of male bactrocera cucurbitae are inhibited, the number of male sperms of the bactrocera cucurbitae is reduced, the reproductive power of the male bactrocera cucurbitae is reduced, the treated male bactrocera cucurbitae is mated with normal female bactrocera cucurbitae, and the egg laying amount and egg hatching rate of the female bactrocera cucurbitae are reduced. The three genes are expected to become SIT potential targets to be applied to pest control, and a new thought is provided for green control of bactrocera cucurbitae.

The invention provides a molecular marker, a detection reagent and a method for evaluating growth traits and / or egg laying interval traits of meat pigeons. The SNP locus and the haplotype molecular marker which are remarkably related to the body size character, the body weight character and / or the egg laying interval character of the meat pigeon are screened from the first intron of the ASIP gene of the meat pigeon, and can be applied to early auxiliary selection of meat pigeon breeding. The invention further provides a detection reagent and a detection method for detecting the SNP loci and the haplotype molecular markers, the body size character, the body weight character and / or the egg laying interval character of the meat pigeons can be quickly, effectively and accurately predicted, so that the production cost is saved, the breeding process is accelerated, and the detection reagent and the detection method have high economic application value and scientific research value.

The application belongs to the technical field of breeding, and particularly relates to an intelligent collection and marking control system and method for duck eggs, which comprises a hardware layer, an execution layer, a control layer and a system layer; the execution layer comprises an egg laying recognition module, a duck egg transportation module and a duck egg marking module; the control method specifically comprises the following steps: powering on the lower computer, starting the control system, judging whether a duck enters the egg laying box, judging whether a duck egg exists, collecting and marking the duck egg. Compared with the prior art, the application can complete the intelligent collection and marking operation of the duck eggs of the net bed breeding duck, reduce the labor intensity of the artificial selection and breeding operation of the duck, accurately correspond to the corresponding duck, improve the accuracy of the individual duck selection and breeding, and reduce the breeding cost of the duck.

1. Name of the product in this design: Egg Laying Box (Outdoor for Free-Range Chickens). 2. Purpose of this design: for poultry egg production. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Top view and bottom view are views that are not commonly used in practice, so top view and bottom view are omitted.

The invention belongs to the technical field of agriculture, and provides an artificial feed and a method for testing the influence of the artificial feed on the growth and development of tomato leaf miners, the method comprises three artificial feed formulas, and standardized feed blocks are prepared through moist heat sterilization and low-temperature preservation. The method comprises the following steps: subpackaging feed by adopting finger-shaped tubes, inoculating according to the density of 3 larvae in each tube, feeding at 25 + / -1 DEG C, and measuring indexes such as the duration, the survival rate, the pupation rate and the eclosion rate of the larvae. Results show that the difference between the formula I and natural foodstuff is minimum, the larva survival rate, pupation rate, pupa weight, eclosion rate and hatching rate are not obviously different from those of natural tomato leaf feeding, and although the larva and pupa duration is prolonged and the single female egg laying amount is reduced, the complete life history of tomato leaf miners can still be supported. According to the method, indoor stable test insects with consistent physiological status are realized, and reliable insect source guarantee is provided for biological research and prevention and control technology development of the tomato leaf miner.

The invention provides a Chinese herbal medicine leavening agent for improving the egg laying performance of hens in the later egg laying period as well as a preparation method and application of the Chinese herbal medicine leavening agent. The Chinese herbal medicine leavening agent is obtained by fermenting compound Chinese herbal medicines including motherwort, angelica sinensis, ligusticum wallichii, peach kernels, astragalus membranaceus and baked ginger with compound probiotics, namely bacillus subtilis, saccharomyces cerevisiae and lactobacillus plantarum. The compound probiotics are adopted for solid-state fermentation of the compound Chinese herbal medicine, strain compatibility is reasonable, the process is simple and efficient, synergistic fermentation is achieved, and release of active ingredients of the Chinese herbal medicine can be effectively promoted; the Chinese herbal medicine leavening agent is added into hen feed in the later egg laying period in proportion, the fat metabolism of hens can be adjusted, the content of intestinal digestive enzymes and reproductive hormone can be increased, the ovarian function of laying hens can be improved, the egg laying performance and the egg quality can be improved, and the Chinese herbal medicine leavening agent has good application prospects.

This utility model relates to the field of livestock and poultry breeding technology and discloses an egg-collecting clamp for livestock and poultry farms. It includes a cylindrical tube with a bracket fixedly installed on its outer wall. Connecting plates are rotatably connected to both sides of the inner wall of the bracket. Rectangular frames are fixedly installed at the bottom of the connecting plates and on the outer wall of the cylindrical tube, respectively. A limiting block is detachably connected inside the rectangular frame, and a collection cover is fixedly installed on one side of the limiting block. A collection component is provided inside the cylindrical tube. Through the rectangular frame, collection cover, cylindrical tube, and connecting plate, the collection cover on the rectangular frame on the outer wall of the cylindrical tube can be disassembled, and the collection cover on the bottom rectangular frame of the connecting plate can also be disassembled. The collection cover disassembled from the outer wall of the cylindrical tube is installed on the bottom rectangular frame of the connecting plate, and the collection cover disassembled from the bottom rectangular frame of the connecting plate is installed on the outer rectangular frame of the cylindrical tube. The collection covers are of different sizes, thus facilitating the disassembly and replacement of collection covers of different sizes to collect eggs laid by different livestock and poultry.

The utility model discloses a whole frame egg laying machine belongs to poultry egg processing technical field. Whole frame egg laying machine includes egg transport module, transfer module, mainframe, poultry egg cleaning tank module and lower frame transport module, the transfer module can slide and set up on mainframe, the upper frame end of egg transport module, the unloading end of lower frame transport module and poultry egg cleaning tank module are opposite respectively with mainframe Setting, after the transfer module clamps whole frame poultry egg on the upper frame end of egg transport module, rotates whole frame poultry egg after sliding to the poultry egg cleaning tank module top of mainframe, makes poultry egg fall into poultry egg cleaning tank module, the transfer module carries empty frame to the unloading end of lower frame transport module and places empty frame, completes whole frame egg laying. The utility model discloses a whole frame egg laying machine greatly improves the cleaning efficiency of poultry egg, and will not cause the rupture of poultry egg, reduces the cost.

The utility model provides a kind of automatic duck chasing egg production box, belong to poultry breeding technical field, the automatic duck chasing egg production box, including automatic egg production store, the two sides of automatic egg production store are egg production room, the middle part in automatic egg production store is provided with egg collection transport belt, the inside of egg production room is connected with baffle respectively by drive arrangement, the two sides of baffle are movably connected with the inner wall two sides of egg production room, the drive arrangement includes servo motor, drive rod, driving gear and support connecting rod, the output shaft of servo motor is fixedly connected with drive rod, the other end of drive rod is movably connected with driving gear, the inside support of automatic egg production store is fixedly connected with cross bar, the cross bar is fixedly connected with gear ring, the inner diameter of gear ring is provided with the convex tooth of adaptation with driving gear;The utility model can solve the problem of duck laying egg after continuous nest.

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 application belongs to the technical field of biological prevention and treatment of forestry diseases and insect pests, and discloses a method for preventing and controlling pine wood nematode disease by killing medium insects based on RNA interference technology and application thereof. The method screens RNA interference lethal targets from Monochamus alternatus, and the targets are selected from at least one of IAP genes and RPL40 genes; RNA interference molecules targeting the targets are prepared, and are prepared into RNAi nucleic acid preparations together with nucleic acid loading materials, nucleic acid protection materials, plant surface adhesion spreading materials, light stable protection materials and aqueous media; and the preparations are applied to Monochamus alternatus, pine branches, pine needles, tree barks and feeding, activity, habitat or egg laying sites thereof. The method can improve the stability, retention and delivery efficiency of RNA interference molecules in a forest environment, induce Monochamus alternatus to reduce the expression of lethal targets and kill medium insects, thereby reducing the transmission risk of pine wood nematodes, and is suitable for green prevention and control of pine wood nematode disease.

The invention relates to the technical field of poultry feed, and discloses a feed composition for improving effects, reducing cost and promoting health of laying hens and application of the feed composition. Comprising 35-45 parts of natural zeolite powder, 25-35 parts of medical stone micro powder, 12-18 parts of iron tourmaline superfine powder, 8-12 parts of germanium-containing rare earth ore powder, 1.5-3.0 parts of anhydrous citric acid micro powder, 4-6 parts of natural seaweed mineral powder and a trace amount of deionized water. The preparation method comprises the following steps: performing high-temperature roasting pretreatment on the zeolite and the medical stone; adding other components, spraying a trace amount of water into a closed vibration mill, and carrying out low-temperature mechanochemical reaction to generate an active complex in situ; and finally, carrying out surface coating by utilizing seaweed meal. According to the invention, the bioavailability of mineral elements is obviously improved by utilizing an electric field-assisted solid-phase acidolysis technology. The composition can effectively increase the laying rate, reduce the feed-egg ratio and improve the eggshell quality, has good storage stability and is suitable for preparation of laying hen feed.

The utility model discloses a modular ecological incubator for tortoise feeding and breeding, which can be disassembled, assembled and stacked for use, and comprises a bracket and a plurality of groups of breeding boxes which are stacked, and one side of each breeding box is also connected with a wastewater discharge pipe; a backflow cavity is formed in any end in the breeding box, a partition plate is arranged in the middle of the backflow cavity to divide the backflow cavity into a backflow chamber and an egg laying pool, a water filtering and heating compartment is connected to one side, close to the backflow cavity, of the top in the breeding box, and one side of the bottom wall of the water filtering and heating compartment is communicated with the breeding box; a water pump is connected into the backflow chamber at the lowermost end, the output end of the water pump extends into the water filtering and heating compartment at the uppermost end, and an overflow opening penetrating through the bottom wall of the breeding box is formed in the bottom end of the backflow chamber. Compared with the prior art, the modular ecological heat preservation box for tortoise feeding and breeding has the advantages that stacking adjustment is convenient, the temperature control space is independent, and the modular ecological heat preservation box for tortoise feeding and breeding can be disassembled, assembled and used in a stacked mode.

The mandarin fish egg collecting device comprises an egg laying box horizontally arranged on the ground, and a water inlet is formed in one side of the egg laying box; two flotation devices are symmetrically arranged in the oviposition box, and an adjustable flow guide device is fixed below each flotation device; a separating inclined plate is horizontally arranged in the middle of the interior of the spawning box, a collecting device is fixed to the upper portion of the separating inclined plate, a collecting groove is fixed to one side of the collecting device, and a water outlet is formed in the lower portion of the end of the collecting groove; the two same flotation devices and the adjustable flow guide device are adopted, low-damage stripping and precise flotation separation are achieved, and the problems that in a traditional collection mode, the roe damage rate is high, and impurity separation is not thorough are solved; a flotation device and a separation inclined plate are further adopted, and automatic separation of healthy roes, excrement and unfertilized roes is achieved by means of buoyancy difference.

The invention relates to the field of biological prevention and control, in particular to a biological prevention and control method for spotted wing drosophila based on double-organism temperature control and a research method. The temperature for releasing the Pseudocera pupae is 18 DEG C. At 14 DEG C, no parasitic wasps emerge from the spotted wing drosophila melanogaster; the intrinsic growth rate and the periodontal growth rate of the pupa are obviously lower than those of the spotted wing drosophila at the same temperature; the optimal net parasitism rate, the weekly-limited parasitism rate and the stable parasitism rate of the Pachyrhizus pupae are observed at the temperature of 26 DEG C, but simulation data show that the number of the Pachyrhizus pupae populations can be remarkably reduced under the condition that damage is reduced by releasing a large number of Pachyrhizus pupae at the temperature of 18 DEG C; the high reproductive capacity of the Drosophila melanogaster at 22 DEG C and 26 DEG C obviously reduces the biological control efficiency of the Drosophila melanogaster, which indicates that more than thousands of times of parasitic wasps are needed and the control time is too late; and the long egg laying days and egg laying period at 18 DEG C are beneficial to the biological control efficiency.

The present application belongs to the technical field of traditional Chinese medicine veterinary medicine, and particularly relates to a traditional Chinese medicine composition for improving the production performance of egg hens in later period. The traditional Chinese medicine composition is prepared from the following raw medicinal materials in parts by weight: Millettia speciosa 40-80 parts, Baptisia tinctoria 40-80 parts, Cyperus 20-40 parts, Notholaena 20-40 parts, and Ochre 30-60 parts. The traditional Chinese medicine composition can slow down the aging of egg hens and prolong the egg laying peak. It is particularly used for prolonging the egg laying rate and average egg weight of egg hens in later period under intensive feeding conditions. When it is used at 50 weeks, the egg laying rate can be slowed down, and even the egg laying rate and average egg weight can be increased.

The invention relates to the technical field of feed additives and poultry breeding, and provides a feed additive for producing DHA-rich poultry eggs and a method for producing DHA-rich poultry eggs, the feed additive for producing DHA-rich poultry eggs comprises a component A, a component B and a component C which are stored separately, the component A is flaxseeds, the component B is schizochytrium limacinum powder, and the component C is a natural plant extract. The component C comprises cardamine hirsute and bile acid. In the first stage and the third stage of the poultry egg producing period, cardamine hirsute and bile acid are added into basal feed, flaxseeds are added in the first stage, flaxseeds and schizochytrium limacinum powder are added in the second stage, and schizochytrium limacinum powder is added in the third stage; the first stage starts from the stable egg laying stage and lasts for 1-2 weeks, the second stage lasts for 1-2 weeks, and the third stage lasts until the egg laying stage ends. According to the feed additive, the content of DHA in poultry eggs and the proportion of phospholipid type DHA can be remarkably increased, and the DHA enrichment and storage stability of the poultry eggs is improved.

The invention belongs to the technical field of animal husbandry genetic breeding, and particularly relates to a mitochondrial SNP molecular marker related to egg laying performance of laying hens and application of the mitochondrial SNP molecular marker. The invention provides a mitochondrial SNP (Single Nucleotide Polymorphism) molecular marker related to the egg laying performance of laying hens, which is positioned at the 15944th bp of a chicken mitochondrial genome and has C / A / T polymorphism. The mitochondrial genome has maternal hereditary characteristics, systematic mitochondrial whole genome hereditary variation analysis is carried out to verify the genetic effect of the laying hen breeding trait mitochondrial gene, and the poultry genetic breeding theory is supplemented and perfected; moreover, a novel extranuclear genetic molecular marker and a variety breeding method are established, and the method has practical application value and important scientific significance.