55 results about "Penaeus" patented technology

The invention provides a penaeus vannamei quality prediction and grade evaluation method and system, and belongs to the field of penaeus vannamei cold-chain transportation process quality prediction, and the method comprises the steps: S1, constructing a penaeus vannamei data set, and carrying out the dynamic time-varying coupling correlation graph generation, convection-diffusion cooperative information propagation, multi-task joint optimization and end-to-end MLP prediction to obtain a penaeus vannamei data set; obtaining a prediction result of the quality of the penaeus vannamei; s2, splicing is performed according to the prediction result and the actual quality data, and a feature matrix is constructed; clustering the feature matrix by using a rule fusion K-means + + clustering method to obtain an optimal clustering center set; and S3, based on the prediction result and the clustering center set, carrying out dynamic prediction and evaluation on the quality of the penaeus vannamei in the refrigeration state in a period of time in the future. According to the invention, an intelligent solution is provided for quality monitoring in cold-chain logistics, and economic loss caused by quality deterioration is significantly reduced.

The application discloses an automatic oxygenation device for South American prawn culture ponds, which comprises a floating mechanism, wherein the floating mechanism comprises a floating plate and a float, the float is arranged on the floating plate, and a surge oxygenation mechanism and a non-powered self-translation mechanism are arranged on the floating mechanism. The application relates to the technical field of oxygenation devices, and particularly provides the automatic oxygenation device for South American prawn culture ponds, which can generate more bubbles, has a better oxygenation effect, can generate a surge effect in the oxygenation process, can diffuse the bubbles to a larger range, has a larger oxygenation range, can move in the culture pond in the oxygenation process without any independent drive, has a wider action range, and can actively control the moving speed.

The invention discloses a penaeus vannamei body size estimation method and device and a storage medium, and relates to the technical field of breeding industry image processing, and the method comprises the steps: collecting a penaeus vannamei data set image, and carrying out the marking of the penaeus vannamei data set image; constructing a penaeus vannamei body detection model, improving the penaeus vannamei body detection model, and training the improved penaeus vannamei body detection model based on the marked penaeus vannamei body data set image; and based on the trained penaeus vannamei body detection model, measuring the body size of the penaeus vannamei and estimating the length of the penaeus vannamei body. According to the method, the expression and fusion capabilities of the multi-scale features are enhanced, the positioning precision of the feature points of the prawns is improved, and a set of non-contact estimation system for the body sizes of the prawns is developed. The coordinates of the feature points of the shrimp bodies are accurately obtained, the body size indexes are calculated, and accurate estimation of the shrimps with different completeness degrees is achieved. Rapid and accurate non-contact prawn body size measurement is realized, and powerful technical support is provided for intelligent and accurate cultivation of the penaeus vannamei.

The application discloses a compound Chinese herbal medicine fermentation preparation for preventing and treating hepatotoxicity of Penaeus vannamei and a preparation method thereof. Spore bacillus is used as a fermentation strain to perform aerobic fermentation on four traditional Chinese herbal medicine stem and leaf wastes, i.e. Astragalus stem and leaf, Rhubarb stem and leaf, Codonopsis stem and leaf and Coptis stem and leaf, so as to obtain a compound Chinese herbal medicine fermentation product with higher active substances. The compound Chinese herbal medicine fermentation preparation of the application can be added into the feed of Penaeus vannamei, so as to effectively prevent and treat hepatotoxicity of Penaeus vannamei.

The utility model discloses a kind of feed devices for Penaeus vannamei breeding with timing feeding, including box, the top of the box is equipped with mounting bracket by sliding mechanism, the side of the mounting bracket is equipped with moving plate and L-shaped plate by moving mechanism. Feed is stored by feeding hopper, feed can be discharged by discharging mechanism, Penaeus vannamei in the box can be fed, feed can be scattered by scattering mechanism, so that feed is more evenly dispersed, the speed of second motor is adjusted, so that the range of feed dispersion increases or decreases, moving plate is moved by moving mechanism, feeding hopper is moved by moving plate, so that the vertical position of discharging position is adjusted, mounting bracket is moved by sliding mechanism, feeding hopper is moved by mounting bracket, so that the horizontal position of discharging position is adjusted, so that the horizontal and vertical positions of feeding hopper are conveniently adjusted.

The utility model relates to the technical field of culture water filtering equipment, and one embodiment of the utility model provides an automatic backwashing South America white shrimp culture water filter which comprises a shell and a pair of supports, the supports are both fixed to the bottom of the shell, a side cover is arranged on one side of the shell, and a connecting assembly is arranged between the shell and the side cover. The filtering and flushing assembly is arranged on the side cover and the shell and comprises a driving motor, the driving motor is installed on the side surface of the side cover, a pair of partition plates is arranged in the shell, one partition plate is connected with the output end of the driving motor, and a filtering layer is connected between the partition plates. According to the technical scheme, the technical problems that a traditional filter in the prior art generally does not have an automatic backwashing function, needs to be manually cleaned, is tedious to operate and is difficult to ensure timely cleaning are solved.

The invention discloses a probe for detecting a penaeus japonicus SNP molecular marker combination, a penaeus japonicus 31K liquid phase breeding chip and application, and belongs to the technical field of molecular marker breeding. The penaeus japonicus SNP molecular marker combination is composed of 31097 SNP molecular markers. The 31097 SNP molecular markers are as shown in the specification table 1. The invention also provides application of the penaeus japonicus liquid phase breeding chip in penaeus japonicus breeding, sample detection, genetic resource genetic diversity analysis, genetic and evolutionary analysis, genetic relationship identification, whole genome association analysis and penaeus japonicus genome selection. The penaeus japonicus 31K liquid phase breeding chip provided by the invention has the characteristics of good site representativeness, strong specificity, high polymorphism and the like, is widely applicable to detection of different varieties of penaeus japonicus materials, can establish a modern breeding system, and promotes the development of the penaeus japonicus molecular breeding industry.

The application is a deep learning-based method for breeding and multiplying Penaeus vannamei, which comprises: obtaining genomic data of the initial population; obtaining specific trait data of the screened initial population; locating a specific gene sequence set according to the specific trait data and the genomic data; the gene sequence set is a gene number set related to the specific trait; and determining the breeding shrimp for breeding according to the gene number set. The application first breeds Penaeus vannamei populations of different families, obtains the trait phenotype data and genomic data of Penaeus vannamei under different families, determines the gene sequence meeting the trait phenotype requirements according to the correlation degree between the trait phenotype data and the genomic data, that is, locates the gene sequence related to the specific trait, and then selects the next generation of Penaeus vannamei according to the gene sequence set, or directly breeds the breeding shrimp with stable traits.

The utility model belongs to the technical field of genetic material extraction appliance, concretely relates to special centrifugal tube suit of south American white prawn nucleic acid extraction, including the pipe body, the top threaded connection of pipe body has the pipe cap, the position department of pipe body outer wall is close to the fixed setting of mounting ring of top, the outer wall of pipe cap is below the sliding ring of mounting ring and is connected with the damping sliding, the position department of mounting ring bottom close to the outside edge is hinged with four upper articulated rods at equal intervals, the top of sliding ring is hinged with the lower articulated rod of corresponding position of upper articulated rod, and the corresponding upper articulated rod is hinged with the lower articulated rod between setting articulated assembly. The utility model places the pipe body on the test tube rack through the amplitude of the lower articulated rod and the upper articulated rod protruding from the outside of the pipe body to support the pipe body, so that the pipe body can be adapted to different diameter types of test tube racks, increase the types of centrifugal tubes that can be adapted to test tube racks, facilitate the use of centrifugal tubes, and at the same time, reduce the types of test tube racks that need to be purchased, and reduce the cost of purchasing test tube racks.

The invention discloses an SNP molecular marker related to the cold resistance character of a penaeus vannamei DDO gene and application of the SNP molecular marker, and belongs to the technical field of penaeus vannamei breeding, the nucleotide sequence of the SNP molecular marker is shown as a sequence 1 in a sequence table, and the SNP molecular marker is remarkably related to the cold resistance character of the penaeus vannamei. The method comprises the following steps: extracting genome DNA of muscular tissues of penaeus vannamei boone to be detected, carrying out PCR amplification by taking the genome DNA as template DNA, purifying a PCR amplification product, sequencing the obtained product, and screening the penaeus vannamei boone variety with cold resistance according to genotypes of different sites on the SNP molecular marker. The marker is high in accuracy and good in stability, is suitable for molecular marker assisted breeding, can be used for rapidly and accurately screening litopenaeus vannamei individuals with cold-resistant characters in an early stage, and remarkably improves the breeding efficiency and accuracy of new cold-resistant varieties, so that the breeding success rate and economic benefits are improved.

The utility model relates to the technical field of aquaculture, and provides a penaeus vannamei boone culture intelligent feeding and water quality purification all-in-one machine which comprises a feeding tank, a buoyancy ring arranged at the lower end of the feeding tank, a distinguishing feeding assembly arranged in the feeding tank, a separation cover of a conical structure, and an extension pipe arranged at the upper end of the separation cover. A feeding port is formed in the upper end of the extension pipe, an extension cavity is formed in the side wall of the separation cover, a feeding tank is inserted into the feeding port, a material guide port is formed in the side wall of the feeding tank, a material stacking port is formed in the side wall of the extension pipe, and the material stacking port corresponds to the material guide port in position. By means of the technical scheme, the problems that in the related technology / prior art, traditional feeding mostly depends on manpower, a large amount of manpower is consumed, the labor intensity is large, the feeding amount and the feeding position are difficult to accurately control, the feeding amount is too large, feed is left in water, waste is caused, and water quality is polluted are solved; the growth and development of the prawns can be influenced when the feeding amount is too small.

The application discloses a method for identifying whether a sample to be detected is infected with a shrimp glass disease virus (SGDV) and a special primer pair thereof. The inventor of the application finds a new small ribonucleic acid virus SGDV in Penaeus vannamei Boone, and the nucleotide sequence of the virus is shown in SEQ ID NO: 3. Experiments prove that a primer pair composed of a primer F shown in SEQ ID NO: 1 and a primer R shown in SEQ ID NO: 2 can accurately identify whether the sample to be detected is infected with the SGDV. The application has important application value, and helps us to deepen the understanding of virus diversity, provides guidance for the breeding of the Penaeus vannamei Boone and has important significance for preventing infectious diseases in aquaculture.

The application discloses a process for removing pollutants in factory breeding tail water of penaeus vannamei, and belongs to the technical field of breeding tail water treatment. The process comprises the following steps: (1) filtering breeding wastewater to remove solid matters; (2) adding composite bacteria to the filtered breeding wastewater for aeration treatment to obtain aeration wastewater, wherein the composite bacteria comprise, by weight, 1-2 parts of rhodococcus, 2-3 parts of bacillus subtilis, 3-4 parts of halococcus and 0.8-1.5 parts of photosynthetic bacteria; (3) adding a flocculating agent to the aeration wastewater, treating the aeration wastewater at 45-50 DEG C for 0.5-1 h, and filtering to obtain a first filtrate; (4) adding modified activated carbon to the first filtrate, treating the first filtrate at 45-50 DEG C for 1-2 h, filtering to obtain a second filtrate; and (5) flowing and mixing the second filtrate through a macroporous adsorption resin to obtain a third filtrate, and sterilizing the third filtrate. The application realizes efficient removal of pollutants in the breeding tail water of penaeus vannamei through the combination of physical, chemical and biological treatments.

The invention provides a penaeus vannamei feed table residual feed quantity grade intelligent evaluation feeding system and method, the system comprises a data acquisition module, an intelligent evaluation module and a feeding control module, after the system is started, feed table images are continuously acquired through the data acquisition module; the method comprises the following steps: acquiring image data, preprocessing the image data, sending the preprocessed image data to an intelligent evaluation module and a feeding control module, analyzing the image in real time through an improved MobileNetV2 convolutional neural network model, evaluating a residual feed amount grade, generating a feeding instruction according to the residual feed amount grade, and sending the feeding instruction to feeding equipment to dynamically adjust the feeding amount as required. According to the method, the feeding strategy of the penaeus vannamei is dynamically adjusted based on the residual feed amount, rapid response from monitoring to feeding is achieved, feed waste is reduced, the feed cost is saved, and the water quality pollution risk is reduced.

The application discloses a Penaeus vannamei HIF-1 alpha gene SNP molecular marker, which is located at the bases of the 67th, 119th, 133th, 172th, 340th, 409th, 437th, 474th, 577th, 647th and 749th nucleotides in the nucleotide sequence shown in sequence 1 of the sequence table. The molecular marker is used as a functional marker of the nitrite tolerance trait of the Penaeus vannamei to carry out selection, specifically, genomic DNA of muscle tissue of the Penaeus vannamei to be detected is extracted, the obtained genomic DNA is used as a template to carry out PCR amplification and purification of the PCR amplification product, then the obtained PCR amplification product is sequenced, the genotype of the molecular marker is determined, and thus individuals with dominant genotypes are selected for Penaeus vannamei breeding, and a Penaeus vannamei strain with good nitrite tolerance trait can be obtained.

The utility model belongs to the technical field of shrimp gill tissue crushing, and particularly relates to a quick crusher for gill tissues of penaeus vannamei boone, which comprises an adjusting base, an adjusting type container cooling mechanism is mounted at the top of the adjusting base, and the adjusting type container cooling mechanism comprises a plurality of cooling clamping plates. The multiple cooling clamping plates are annularly arranged and slidably mounted above the adjusting base, and circulating cooling channels are formed in the cooling clamping plates. A cooling liquid storage box is arranged on one side of the adjusting base, an electric lifting push rod is fixed to the top of the cooling liquid storage box, a supporting plate is fixed to the top of the electric lifting push rod, and a first motor is fixed to the top of one end of the supporting plate. According to the utility model, through the cooling system which can be moved and adjusted, by adjusting the position of the cooling system, the containers with different specifications can be attached and fixed, the low temperature in the containers can be maintained, the containers are convenient to disassemble and replace, the containers with proper capacities can be selected according to required sample sizes, and the use is more convenient.

The present application relates to a kind of concentrated frozen chlorella applied to the method of south American white prawn breeding in, belong to the technical field of breeding, comprising the following steps: concentrated frozen chlorella under-20 ℃ condition is transferred to 0~4 ℃ condition and is stored;In 0~4 ℃ condition, the concentrated frozen chlorella is completely thawed to obtain concentrated chlorella;Before 2~8h, the concentrated chlorella obtained after thawing is pretreated by being sprinkled with concentrated chlorella in the breeding pond: the treatment mode of pretreatment is to take concentrated chlorella and seawater mixed in the light container to form mixed solution, add bacteria to mixed solution, then add fermentation carbon source to obtain algal liquid by fermentation.The present application is pretreated before use to concentrated frozen chlorella, to solve the problem that concentrated frozen chlorella is seriously dirty in south American white prawn breeding, water quality index is difficult to control, and the survival rate of breeding is low.

The invention discloses a process for removing pollutants in industrial aquaculture tail water of penaeus vannamei boone, and belongs to the technical field of aquaculture tail water treatment. Comprising the following steps: (1) filtering breeding wastewater to remove solids; (2) compound bacteria are added into the filtered breeding wastewater for aeration treatment, aerated wastewater is obtained, and the compound bacteria comprise rhodococcus ruber, bacillus subtilis, brevibacterium halotolerans and photosynthetic bacteria according to the weight ratio of (1-2): (2-3): (3-4): (0.8-1.5); (3) adding a flocculating agent into the aerated wastewater, treating at 45-50 DEG C for 0.5-1 hour, and filtering to obtain a first filtrate; (3) adding modified activated carbon into the first filtrate, treating at 45-50 DEG C for 1-2 hours, and filtering to obtain a second filtrate; and (4) treating the second filtrate through mixed macroporous adsorption resin to obtain a third filtrate, and sterilizing the third filtrate. By combining physical, chemical and biological treatment, pollutants in the penaeus vannamei culture tail water are efficiently removed.

The application discloses a kind of Penaeus vannamei heat shock protein 60A gene molecular markers, it includes molecular marker A, molecular marker B, molecular marker C, molecular marker D, molecular marker E, molecular marker F, molecular marker G and molecular marker H on the sequence of Penaeus vannamei heat shock protein 60 gene;The molecular marker described in the application is significantly related to the cold tolerance of Penaeus vannamei, and can be used as a functional marker for the cold tolerance of Penaeus vannamei;The genotypes of the molecular marker A, the molecular marker B, the molecular marker C, the molecular marker D, the molecular marker E, the molecular marker F, the molecular marker G and the molecular marker H are determined by extracting the genomic DNA of the muscle tissue of the Penaeus vannamei to be tested, performing PCR amplification and sequencing the obtained product, and then selecting individuals with dominant genotypes for Penaeus vannamei breeding, so as to accurately and efficiently breed Penaeus vannamei with cold tolerance and stress resistance, and provide a feasible scheme for breeding cold-tolerant varieties of Penaeus vannamei.

The application provides a Brevibacillus parabrevis GBW-M0 and application thereof in aquaculture. The Brevibacillus parabrevis GBW-M0 is classified as Brevibacillus parabrevis Brevibacillus laterosporus , and the preservation number is CGMCC No. 32335. The Brevibacillus parabrevis GBW-M0 is prepared through seed liquid preparation and submerged fermentation to obtain Brevibacillus parabrevis GBW-M0 fermentation liquor. The Brevibacillus parabrevis GBW-M0 fermentation liquor can reduce the concentration of hepatointestinal ciliates carried in the Penaeus vannamei, and is used for preventing and controlling microsporidian diseases of aquaculture animals. Meanwhile, the Brevibacillus parabrevis GBW-M0 fermentation liquor can inhibit the growth of Microcystis aeruginosa, and is used for treating blue-green algae blooms in aquaculture water bodies, thereby improving the success rate of aquaculture.

The invention discloses a method for enhancing the toughness of low-salt minced shrimp gel based on kappa-carrageenan, and belongs to the technical field of food processing. The low-salt minced shrimp gel is prepared by taking penaeus vannamei boone as a raw material, adding kappa-carrageenan under a low-salt condition and carrying out chopping and two-stage heating gelation processes. According to the invention, the gel toughness of the low-salt minced shrimp product is obviously enhanced, and the technical bottlenecks of loose texture, poor chewiness and the like caused by insufficient dissolution of myofibrillar protein in the traditional low-salt minced shrimp are overcome. By adding the kappa-carrageenan and regulating and controlling the process, a composite network structure with energy dissipation capability is formed in the minced shrimp, so that the product has excellent flexibility and resilience while maintaining proper hardness, thereby realizing the'elastic 'taste expected by consumers. The method is simple in process, green, safe and easy to popularize and apply in the food industry, meets the requirement of modern healthy diet for low salt, and provides a reliable technical path for developing a new generation of high-added-value minced shrimp products.

The invention belongs to the technical field of biological agents, and discloses a biological agent for preventing and treating enteritis diseases of penaeus vannamei as well as a preparation method and application of the biological agent, the biological agent comprises lactobacillus rhamnosus BY13207, and the total viable count of the biological agent is 1.5 * 10 < 9 >-3 * 10 < 9 > cfu / mL; the lactobacillus rhamnosus BY13207 is preserved in the China General Microbiological Culture Collection Center on August 11, 2025, and the preservation number of the lactobacillus rhamnosus BY13207 is CGMCC No.35559. The lactobacillus rhamnosus BY13207 added in the lactobacillus rhamnosus BY13207 has very strong antagonistic action and anti-inflammatory action, can inhibit the growth and reproduction of various pathogenic microorganisms of prawns and enhance the disease resistance of the prawns; the compound has broad-spectrum antibacterial activity, and can effectively eliminate harmful bacteria in prawn culture water and reduce the risk of disease occurrence.

The application provides a kind of low sensitization of penaeus vannamei and its preparation method and application, belong to food biotechnology field.The application uses fucoidan to treat penaeus vannamei by covalent modification, after treatment, protein spatial conformation has changed significantly, allergen epitope is hidden.After BALB / c mouse sensitization model and RBL-2H3 cell degranulation model test shows, the sensitization of covalent modification penaeus vannamei decreases by 72.88%, low sensitization penaeus vannamei can inhibit mast cell degranulation and increase the threshold of sensitization, but still has immunogenicity.Through the construction of BALB / c mouse oral tolerance model, it is found that low sensitization penaeus vannamei can significantly alleviate the multiple immunoglobulin-mediated hypersensitivity caused by mouse allergy, which proves that low sensitization penaeus vannamei has auxiliary effect on oral tolerance, can promote oral tolerance ability, can be used as an effective immune tolerance agent for shrimp allergy patients.

A method for improving the mating rate of Penaeus vannamei, comprising the following steps: step one, cultivating diatoms in a parent culture pond: scraping the naturally propagated benthic diatoms from the inner wall of the water inlet pipeline in the breeding field or near the middle tide line of the beach to obtain the benthic diatom liquid; culturing the benthic diatoms in still water: continuously adding filtered seawater to culture the benthic diatoms by flowing water; and culturing in a pond: moving female and male parent shrimps into the parent culture pond in which the benthic diatoms are cultivated until the female shrimps mature; step two, moving the female shrimps into the male shrimp culture pond for mating: selecting the female shrimps with mature gonads and moving them into the male shrimp culture pond for mating; step three, moving the female shrimps that have successfully mated into an egg laying pond for laying eggs, and taking out the female shrimps after laying eggs and returning them to the original culture pond. The method stabilizes the water quality by managing the benthic diatoms in the culture pond, provides a stable mating environment, and improves the mating rate; the operation is simple, the parent shrimps are less damaged, the cost is lower, the success rate is high, and the mating rate is as high as 90%.

The invention discloses an SNP molecular marker related to the cold resistance character of a TRPP gene of penaeus vannamei boone and application of the SNP molecular marker, and belongs to the technical field of penaeus vannamei boone breeding, the nucleotide sequence of the SNP molecular marker is shown as a sequence 1 in a sequence table, and the SNP molecular marker is remarkably related to the cold resistance character of the penaeus vannamei boone and can be used as a functional marker for the cold resistance of the penaeus vannamei boone. The method comprises the following steps: extracting genome DNA (deoxyribonucleic acid) of appendage muscle tissues of penaeus vannamei to be detected, performing PCR (polymerase chain reaction) amplification, sequencing obtained products, and screening individuals carrying dominant genotypes according to genotypes of different sites on the SNP molecular marker; the method is used for breeding the cold-resistant strain of the penaeus vannamei boone, so that the penaeus vannamei boone with excellent cold resistance can be quickly and accurately identified in the early stage, and support is provided for breeding new cold-resistant varieties of the penaeus vannamei boone.

The application provides a penaeus vannamei circulating integrated intelligent breeding system and a breeding method, the breeding system comprises a breeding module and a bottom water circulating module, the breeding module comprises a shrimp fry cultivation pond and a mature shrimp cultivation pond, the designed breeding module separates and feeds juvenile shrimps and mature shrimps, provides different feeding environments and baits, and thus improves the overall quality of the shrimps; the bottom water circulating module collects residual baits and shrimp excretions to achieve the effect of purifying pond water, meanwhile, the bottom water circulating module circulates the filtered water back to the shrimp fry cultivation pond and the mature shrimp cultivation pond, and thus saves water resources; the top of the shrimp fry cultivation pond and the mature shrimp cultivation pond is provided with a containing groove with a green bottom plate, the containing groove uses the principle that sick shrimps and weak shrimps move along the edge and have poor activity, increases the risk of exposing the sick shrimps and the weak shrimps to the field of vision of birds, removes the sick shrimps and the weak shrimps, and solves the problem that the sick shrimps and the weak shrimps are mixed in the shrimps and are easy to infect the shrimp group.

The invention discloses an SNP molecular marker related to the cold resistance character of a Penaeus vannamei GPx gene and application thereof, and belongs to the technical field of Penaeus vannamei breeding, the nucleotide sequence of the SNP molecular marker is shown as a sequence 1 in a sequence table, the SNP molecular marker is remarkably related to the cold resistance character of Penaeus vannamei, and the SNP molecular marker can be used as a functional marker for the cold resistance of Penaeus vannamei. The method comprises the following steps: extracting genome DNA of appendage muscle tissues of penaeus vannamei to be detected, carrying out PCR amplification, sequencing the obtained product, screening individuals carrying dominant genotypes according to genotypes of different sites on the SNP molecular marker, and breeding the penaeus vannamei cold-resistant strain. Therefore, early, rapid and accurate identification of the penaeus vannamei with excellent cold resistance is realized, and effective technical support is provided for breeding of new cold-resistant varieties.

The invention discloses a litopenaeus vannamei MAPT-LIKE gene, an SNP (Single Nucleotide Polymorphism) marker, a detection primer, a kit and application of the litopenaeus vannamei MAPT-LIKE gene. The sequence of the SNP marker is as shown in SEQ ID NO.1, the SNP site is located at the 554th site from the 5'end of the SEQ ID NO.1, and the polymorphic form is C / T type; the SNP locus can be used for breeding litopenaeus vannamei through body length or growth rate screening, and a primer designed according to the SEQ ID NO.1 sequence or a kit prepared from the primer can be used for detecting the SNP locus. According to the SNP marker Chr3541822951, parents can be selected according to the CC genotype, the body length growth speed of breeding populations can be increased, an innovative tool is provided for molecular breeding of litopenaeus vannamei, the breeding period is shortened, and industrial development and efficiency improvement are assisted.

The invention discloses a processing and making method of a shrimp cake for penaeus vannamei. The processing and making method of the shrimp cake comprises the following steps: S1, screening South America white shrimps meeting standards as raw material shrimps for making the shrimp cake; s2, chopping and mixing the raw material shrimps, and processing the raw material shrimps into semi-finished minced shrimps; s3, the semi-finished minced shrimps are subjected to a shrimp cake forming process, and finished shrimp cakes are made; in the step S2, a chopping end point of chopping processing is determined according to a preset chopping end point judgment model, and the chopping end point judgment model adopts an elasticity and moisture content two-parameter linkage judgment model. Through innovative conception of multi-level accurate control and dynamic compensation, uncontrollable process deviation in a traditional process is converted into a predictable and compensable closed-loop variable, and accurate control of process parameters in the whole process is realized, so that improvement of the quality of a final finished product shrimp cake is facilitated.

The invention discloses a penaeus vannamei hatching and egg pushing device, and particularly relates to the technical field of penaeus vannamei egg hatching, the penaeus vannamei hatching and egg pushing device comprises a hatching pond, a support is fixedly connected to the hatching pond, an egg pushing part is mounted on the support, and a detection structure is arranged on one side, close to the bottom side in the hatching pond, of the support and comprises a mounting box; the egg pushing part comprises an air pump, the air pump is fixedly connected to the support, the output end of the air pump is fixedly connected with an air pipe, the end, away from the air pump, of the air pipe is installed in the hatching pond, and a first isolation assembly is installed on the outer side of the detection probe and comprises a mouth-shaped block; the end, close to the mounting box, of the mouth-shaped block is fixedly connected with the mounting box. Through the arrangement of the first isolation assembly, the detection probe is prevented from being wrapped, water body gas exchange is not hindered, the authenticity of the measurement result of the detection probe is guaranteed, and the detection result is more accurate.