48 results about "Snakehead" patented technology

The embodiment of the invention discloses an SNP chip of channa maculata and application. The SNP chip comprises a probe combination which is fixedly provided with markers respectively aiming at SNP1-SNP50000. The chip has the advantages of uniform site distribution, high typing accuracy, strong repeatability and higher flexibility, is suitable for mainstream next-generation sequencing platforms such as Illumina and MGI, and has universality. A reliable genotyping technology can be provided for correlation researches such as population genetics analysis, genetic relationship identification, whole genome correlation analysis and genome selection of channa maculata, the breeding efficiency of channa maculata is improved, and the development of the aquatic product breeding industry is promoted.

The utility model discloses a fish pretreatment cleaning device which comprises a cleaning box, installation plates are fixedly installed on the inner wall of the cleaning box, conveying mesh belts are arranged on the opposite faces of the installation plates, partition plates are fixedly installed on the conveying mesh belts, a conveying assembly is arranged in the cleaning box, and the partition plates are fixedly installed on the conveying mesh belts. A flow dividing pipe is arranged on the rear side of the cleaning box through a conveying assembly, a spray head is fixedly installed on the flow dividing pipe, a filter plate is fixedly installed on the inner wall of the cleaning box, a moving assembly is arranged in the cleaning box, a brush is arranged in the cleaning box through the moving assembly, and a sealing assembly is arranged on the front side of the cleaning box. The snakehead fillets are conveniently sprayed and cleaned, the phenomenon that impurities after the snakehead fillets are cleaned enter cleaning liquid at the bottom of the cleaning box is reduced, so that the situation that the cleaning liquid in the cleaning box needs to be continuously replaced is avoided, the cleaning speed of the snakehead fillets is increased, a filter plate can be wiped through a brush, and the cleaning efficiency is improved. And the phenomenon that the filter plate is blocked is avoided.

The application belongs to the technical field of molecular biology, discloses a SNP molecular marker closely linked with the genetic sex of Ophiocephalus argus and application thereof, and specifically discloses the SNP molecular marker closely linked with the genetic sex of Ophiocephalus argus, the sequence of the SNP molecular marker is shown as SEQ ID NO:1, the SNP site is located at the 151th position from the 5' end of the sequence shown as SEQ ID NO:1, and the base is T / G. The application provides a SNP molecular marker closely linked with the sex gene of Ophiocephalus argus, and the genetic sex of Ophiocephalus argus can be accurately identified through the single base difference in the molecular marker. A specific KASP primer for amplifying the molecular marker closely linked with the sex gene of Ophiocephalus argus is also provided, the genetic sex of Ophiocephalus argus can be detected, the method is simple and easy to use, has high analysis flux and high accuracy, and is suitable for the detection of a large number of samples.

The present invention discloses a net cage device for aquaculture of sand snakeheads, comprising a net cage, a cone, a sinker, and a rope. The net cage is formed by sewing a bottom mesh sheet and a peripheral mesh sheet, the mesh sheet being provided with a plurality of circular holes, the edges of the circular holes being sewn to the fan-shaped mesh sheet to form an embedded cone with a closed top, the sinker being sewn to the periphery of the bottom of the net cage so that the net cage extends into the water body; the rope being passed through the periphery of the top of the net cage, and the tail of the rope being used to secure the net cage. The net cage device of the present invention has a strong and simple structure, a long service life, is suitable for a variety of specifications, has a wide range of uses, is convenient for daily management during aquaculture, is convenient for anytime and quantitative fishing, reduces fishing intensity and fish fishing stress, and improves fishing efficiency; at the same time, it meets the needs of sand snakehead juveniles and adult fish for a hidden habitat, reduces spatial competition of sand snakeheads, increases the level of sand snakeheads' feeding on bait organisms, reduces energy consumption, and promotes growth.

The invention discloses a compound grease feed additive for improving breeding quality of channa maculata and application. The method comprises the following steps: (1) preparing experimental feed; the method comprises the following steps: respectively preparing an experimental group ARA 1.5 added with 1.5% of arachidonic acid and an experimental group ARA + PC added with 1.5% of arachidonic acid and 1.5% of phosphatidylcholine; (2) feeding; (3) after the culture experiment is finished, treating and detecting the channa maculata; (4) carrying out an artificial propagation test; (5) carrying out ovarian steroid synthesis related gene expression detection; and (6) carrying out data statistical analysis. By adding arachidonic acid (ARA) and phosphatidylcholine (PC) into the feed, the breeding performance of channa maculata and the quality of fry are improved, and the feed has very important significance for improving the aquatic product efficiency of high-quality fry of channa maculata in aquaculture.

The present invention relates to a novel simulated snake hose device. The device is designed to protect gardens without the need for fencing. The device comprises a no-kink hose with a wrench collar and a hex head brass fitting. Further, a simulated snake head is secured onto the hose end and supported by a folding stake to keep the snake head above the grass. The hose is also printed with a snakeskin pattern to simulate differing snake species and patterns.

The utility model discloses a moon snakehead nursery pond which comprises a nursery pond body, a mover and a protective net, a driving motor is fixed to the outer wall of the top of the nursery pond body through bolts, a sealing box and a supporting box are arranged on the outer side of the outer wall of the top of the nursery pond body, and a threaded rod is rotationally connected to the interior of the supporting box through a rotating shaft; and a driven bevel gear is arranged at one end of the threaded rod, a driving bevel gear is arranged on an output shaft of the driving motor, the driving bevel gear is meshed with the driven bevel gear, and threaded sliding blocks are arranged on the outer walls of the two sides of the four movers. The protective net is placed on the lower clamping plate, the upper clamping plate is placed on the protective net, the fixing bolts are rotated, the fixing bolts move in the threaded holes, the fixing bolts stretch the fixing springs, and the fixing bolts move downwards to extrude the upper clamping plate, so that the function of fixing the protective net is achieved, meanwhile, workers can replace the protective net conveniently, and the working efficiency is improved. The driving motor drives the driving bevel gear to rotate.

This invention discloses a pelleting device for treating snakehead skin rot in snakehead fish farming. The invention relates to the field of pelleting equipment technology and includes a composite mechanism. This pelleting device for treating snakehead skin rot in snakehead fish farming utilizes a composite mechanism design. Material enters the composite shell through the feed inlet. A first motor drives the central shaft to rotate, providing kinetic energy to the composite mechanism. A stirring device pulverizes the material, resulting in uniform particle size for easier pelleting. During the pulverization process, material particles may adhere to the inner wall of the equipment. The rotating mechanism rubs against the inner wall, cleaning the material and ensuring thorough pulverization. This prevents particle clumping and adhesion, avoiding prolonged adhesion that could contaminate the equipment and shorten its lifespan. An electrically controlled valve controls the material descent, thus extending the operating time of the components.

The invention belongs to the field of ultralow-temperature cryopreservation of fish sperms, and particularly relates to an anti-freezing liquid formula for sperms of micropterus salmoides and odontobutis potamophila. The anti-freezing liquid comprises an anti-freezing agent and a diluent, wherein the anti-freezing agent comprises at least one of methanol, ethylene glycol, glycerol and DMSO; the diluent comprises a diluent and a dispersoid, and the diluent comprises at least one of a Ren's solution and a Hank's solution; the dispersoid comprises at least one of sodium chloride, astragalus polysaccharide, apigenin, taurine, sodium pyruvate and crocin. The anti-freezing liquid can be used for cryopreservation of sperms of micropterus salmoides and odontobutis potamophila, the cryopreserved sperms are good in quality, high in activation rate, long in movement time and long in service life, and the anti-freezing liquid guarantees the quality of the cryopreserved sperms by means of maintaining stability of cell membranes in the cryopreservation process, reducing the freezing point of the cryopreserved sperms and the like.

The invention discloses freeze-dried powder for an ice glaze preparation, the ice glaze preparation and a use method of the ice glaze preparation. The preparation method of the freeze-dried powder for the ice glaze preparation comprises the following steps: step 1, collecting snakehead mucus; and step 2, removing impurities from the collected snakehead mucus, carrying out micron filtration on the impurity-removed liquid to obtain a filtrate, and carrying out freeze-drying operation on the filtrate to obtain freeze-dried powder. And dispersing the obtained freeze-dried powder in deionized water, centrifuging, taking the supernatant, and cooling to obtain the ice-coated preparation, the mass percentage of the freeze-dried powder in the ice-coated preparation being 0.2-2.5 wt%. The ice glaze preparation prepared from the freeze-dried powder is low in water activity, can reduce the water vapor partial pressure of the inner layer and the surface layer of fish, reduces the pressure difference between the water vapor on the surface layer of the fish and the water vapor in air in a freezing chamber, and inhibits ice crystal sublimation; the ice glaze preparation can inhibit the growth of ice crystals, improve the swelling phenomenon of the ice glaze, and prevent the ice glaze from releasing more expansion pressure when the ice glaze is frozen.

The utility model provides an oxygenation device for opsariichthys bidens culture relates to oxygenation device field, including: underwater pile, oxygenation pump and drive ring, the outer wall of underwater pile is provided with air inlet hole, and the inner side of underwater pile is provided with cavity that is communicated with air inlet hole, the top of underwater pile is equipped with motor, and the drive ring is equipped with drive ring. The output shaft end of the motor is connected with a driving bevel gear, the lower side of the driving bevel gear is meshed with a driven bevel gear, meanwhile, the driven bevel gear is rotationally connected to the outer wall of the underwater pile, the oxygenation pump is installed on the outer wall of the underwater pile, an air inlet pipe is arranged at the outer end of the oxygenation pump, and the air inlet pipe communicates with the cavity through an air inlet hole; the driving ring is connected to the lower side of the driven bevel gear through a connecting rod, and meanwhile the driving ring is rotationally connected to the outer wall of the underwater pile. The rapid oxygenation device for breeding solves the problems that an existing rapid oxygenation device for breeding is still low in oxygenation efficiency, and the water temperature cannot be rapidly adjusted.

The utility model discloses a high-precision micro-cutting device for snakehead fillets, and relates to the technical field of snakehead processing. A cutting mechanism is arranged in the machine frame, a controller is fixedly installed on one side of the machine frame, a freezing box is fixedly connected to one end of the machine frame, a placing plate is fixedly installed in the freezing box, and a hydraulic rod is fixedly connected to one end of the freezing box. Through mutual cooperation of the placing plate, the flow guide holes and the air guide parts, air can be guided to the top of the interior of the guide box, so that the air is blown to snakehead meat placed at the top of the placing plate, pushing force is uniformly applied to the snakehead meat, and the snakehead meat and the placing plate are slowly separated; therefore, the problems that the frozen fish meat is easy to tightly adhere to the freezing structure, the fish meat is inconvenient to separate from the freezing structure, and the fish meat is easy to damage if the fish meat is forcibly separated are solved, so that the integrity of the fish meat is ensured, and the subsequent fish slice cutting precision is improved.

The invention discloses an outdoor intelligent hatching fish nest system for inducing natural breeding behaviors of demersal egg-protecting fishes, which is characterized in that an inverted U-shaped main body is assembled by water corrosion resistant pipes (different demersal egg-protecting fishes select different pipe diameters, and odontobutis obscura select the pipe diameter of 160mm), the pipe openings face downwards, and according to the thermodynamic principle of water, hot water faces upwards, cold water faces downwards, and the water corrosion resistant pipes face downwards; energy (water temperature) in a fish nest system can be kept, and the pipe orifice is downward, so that the influence of wind and flow on the water temperature in the fish nest is reduced; the intensity of light entering the inverted-U-shaped bionic cave is reduced due to the fact that a pipe opening faces downwards, and an egg protecting environment with biological adaptability is built; the heat loss is effectively reduced by designing and combining the polyurethane thermal insulation layer; the 50mm multifunctional integrated pipe realizes integration of micro-flowing water, constant-temperature heating, oxygenation and waste gas emission; the inner wall is roughened by the electric steel wire brush to improve the roe attachment rate. The fish nest is suitable for habitats such as outdoor ponds and indoor water bodies which cannot preserve heat, incubation water temperature of 22-26 DEG C can be stably maintained through continuous injection of warm water or constant-temperature heating, and the fish nest is easy and convenient to operate and low in cost.

The utility model discloses an oxygen-enriched recirculating aquaculture system for snakehead aquaculture, and relates to the technical field of recirculating aquaculture systems. The device comprises a culture pond, the bottom of the culture pond is provided with a sewage discharge hole and a water tank, the outer side of the water tank is movably connected with a supporting frame, the top of the supporting frame is provided with a movable groove, the interior of the movable groove is movably connected with a movable frame, and the top of the movable frame is rotationally connected with a filter box. The filter box is rotationally connected with one end of the movable frame, and an elastic assembly is arranged in the movable groove and is arranged at the bottom end of the movable frame. Impurities in water flow can be filtered and collected through the filter box, more impurities can be collected at a time, the phenomenon of blocking cannot occur before the filter box is full of the impurities, and in addition, the alarm assembly is arranged, so that a worker can timely clean the filter box full of the impurities, and the work efficiency is improved. Therefore, the phenomenon of impurity blockage is not easy to occur during water circulation.

This invention pertains to the field of *Snakehead sinensis*, specifically relating to its characteristic polypeptides and their applications. Specifically, it covers the characteristic polypeptides of *Snakehead sinensis*, a mass spectrometry-based method for authenticity identification, and the application of these characteristic polypeptides in the preparation of drugs for treating rheumatoid arthritis. This invention provides a characteristic polypeptide, QDVDNASLVR, which is found only in *Snakehead sinensis* and can be stably detected. Its amino acid sequence is not reported in the literature, making it a novel polypeptide. An LC-MRM-MS method for authenticity identification based on this characteristic polypeptide is established, achieving accurate differentiation from *Snakehead rubrum* and *Agkistrodon halys*, with a 100% authenticity identification rate. This invention also provides a characteristic polypeptide, SFLGVPFAK, with anti-rheumatoid arthritis activity. Its amino acid sequence is not reported in the literature, making it a novel polypeptide. Its target and pathway can be predicted, or it can be applied to the modification of anti-rheumatoid arthritis active polypeptides.

The present invention discloses a molecular marker tightly linked to the sex gene of the snakehead fish (Canna maculatum), which can accurately identify the genetic sex of the fish. The present invention also provides specific KASP primers for amplifying molecular markers tightly linked to the sex gene of the snakehead fish. These primers can detect the genetic sex of the fish, are simple to use, have high analytical throughput, and high accuracy, making them suitable for testing large numbers of samples. The molecular markers provided by the present invention have important practical significance for quickly and accurately screening for pseudo-female and super-male snakehead fish, shortening breeding time, and improving breeding efficiency.

The invention relates to the technical field of conveying devices, and discloses a draining and outputting device and a conveying method based on snakehead fillet production, through the arrangement of a spreading assembly and a turning assembly, when a conveying belt conveys cleaned fillets, the fillets on the conveying belt can pass through the spreading assembly and the turning assembly in sequence, the spreading assembly enables fixed claws on a connecting plate to grab the stacked fish slices open and spread the fish slices on a conveying belt in a dispersed mode by rotating a driving rod, water in the fish slices is rapidly drained out, and therefore the draining efficiency of the fish slices is improved; the fish fillets spread on the conveying belt are continuously turned over, the draining efficiency of the fish fillets is further improved, it is ensured that water in the fish fillets is completely drained out, and therefore the processing quality of the fish fillets is improved.

The invention belongs to the technical field of immunodetection, and discloses an ELISA kit for detecting a hybrid snakehead aeromonas schubertii antibody and a detection method thereof. The invention discloses a protein, which is characterized in that immune protein Slr4-like of aeromonas schubertii is analyzed and truncated, and the SLPn protein with a better detection effect on the aeromonas schubertii is obtained through recombinant induced expression. The SLPn protein is used for successfully constructing an ELISA kit for detecting an antibody aiming at aeromonas schubertii of hybrid snakehead and a detection method of the kit, and the kit or the detection method has relatively good sensitivity, specificity and accuracy on the aeromonas schubertii antibody and has very good repeatability and stability; the technical support is provided for the detection of the antibody after the aeromonas schubertii infection or immunization in the cultured hybrid snakehead.

The invention discloses an efficient method for generating haploid sperms through in-vitro induction of bostrichthys sinensis spermatogonium cells, which improves the efficiency of generating functional sperms through in-vitro induction of the spermatogonium cells and comprises the following steps: placing the spermatogonium cells in a three-dimensional non-scaffold type culture material containing a sperm induction culture medium for culture; the sperm induction culture medium is prepared by adding sex hormone, melatonin and an ERK1 / 2 activator into a basic sperm culture medium. The invention further discloses an efficient culture medium for generating haploid sperms through in-vitro induction of bostrichthys sinensis spermatogonium cells.

The invention belongs to the technical field of fish germplasm resource improvement, and discloses a breeding method of channa maculata, which comprises the following steps: selecting mature channa maculata parent female fish and male fish, carrying out spawning induction treatment, and then stimulating by running water to collect ova and seminal fluid; diluting the semen, carrying out shake culture, and irradiating by adopting an ultraviolet lamp during the shake culture to obtain inactivated semen; adding the inactivated seminal fluid into the ovum, stirring to activate fertilization, and adding aerated water to obtain a fertilized ovum; carrying out cold shock treatment and hatching to obtain newly hatched larva fish; after the newly hatched fries open mouths, fish fries are obtained and fed with biological bait for breeding, when the fish fries grow to 2 cm, the bodies start to become yellow gradually, and when the fish fries grow to 5 cm, the whole bodies show obvious and stable golden body lines, and the channa maculata is obtained. According to the method, artificial insemination is carried out in the mode that the semen is irradiated by the ultraviolet lamp to be inactivated, the channa maculata is obtained through natural incubation, the method is simple, convenient and rapid, guarantees are provided for production and breeding of the channa maculata, and the method has good application prospects.

The invention is applicable to the technical field of fillet processing, and provides a snakehead fillet sorting and automatic feeding platform conveying system which comprises a base and a water tank fixedly mounted on the surface of the base, l-shaped plates are symmetrically fixed on the inner bottom surface of the water tank; a fixed frame is fixed between the end parts of the two L-shaped plates; a weighing plate is rotationally arranged in the fixed frame; conveying belts are symmetrically arranged on the two sides of the fixing frame above the water pool in a transmission mode. Guide parts matched with the conveying belt are symmetrically fixed to the upper portion of the base. Multiple lug rods are evenly fixed to the side face of the conveying belt. A bearing part matched with the guide part is rotationally arranged on the lug rod; according to the device, fish fillets without bones are placed on the weighing plate to be weighed and sorted, the weighing plate is controlled to rotate, the fish fillets on the weighing plate slide to the corresponding bearing parts, the fish fillets are flatly laid on the moving bearing parts, through linkage cooperation of the bearing parts and the guide parts, the fish fillets are kept in a flatly-laid state in the transportation process, and the fish fillets are conveyed to the conveying device. The working efficiency is improved.

The invention discloses a device and method for collecting fertilized eggs of an artificial pond of Channa ge's perch, so as to solve the problem that the existing method of collecting eggs of Channa ge's perch uses palm bark or waste tires, the palm bark and rubber tires have poor air permeability, the fertilized eggs die due to local lack of oxygen, and the egg collection efficiency is less than 30%. Device: The collecting device comprises a supporting frame (1) and an egg collecting trough (2), wherein the egg collecting trough (2) comprises a rectangular frame (21) and an egg collecting sheet (22), wherein the egg collecting sheet (22) is arranged at the bottom of the rectangular frame (21), wherein the supporting frame (1) is formed into a triangular frame by three supporting columns (11), wherein three cross bars (12) are arranged horizontally from top to bottom between every two supporting columns (11), wherein the three cross bars (12) divide the supporting frame (1) into two layers, namely an upper layer (13) and a lower layer (14), wherein the upper layer (13) is provided with 6 to 9 egg collecting troughs (2), and the lower layer (14) is provided with 9 to 15 egg collecting troughs (2). Method: 1. Processing the egg collecting sheet (22); 2. Assembling the egg collecting trough (2); 3. Assembling the collecting device; 4. Placing the collecting device; 5. Collecting fertilized eggs. The present invention is used for collecting fertilized eggs in artificial ponds of Channa ge's perch.

The utility model discloses a movable feeding device for snakehead culture, which relates to the field of snakehead culture and comprises a mounting plate, the upper end of the mounting plate is fixedly connected with a supporting rod, the upper end of the supporting rod is fixedly connected with a storage cylinder, the upper end of the storage cylinder is fixedly connected with a feeding pipe, and the upper end of the feeding pipe is fixedly connected with a feeding port. The lower end of the mounting plate is fixedly connected with a floating ball, and the lower end of the mounting plate is fixedly connected with a uniform assembly. By adopting the structure, the mounting block is driven to rotate at the upper end of the mounting plate under the action of the uniform motor, so that the scattering plate fixedly connected with the mounting block rotates under the condition that the mounting block rotates; further, under the rotation of a scattering plate, feed discharged by a discharging pipe can be stirred and then beaten out through the peripheral side of a storage barrel, so that the feed can be uniformly fed, meanwhile, the feeding range is increased, and the situation that fries cannot eat the feed due to gathering of fish schools is avoided.

The invention discloses application of spartina alterniflora straw, and particularly relates to application of the spartina alterniflora straw as feed for tenebrio molitor larvae after the spartina alterniflora straw is crushed. Tenebrio molitor larvae fed with spartina alterniflora straw can be used as live initial feed for feeding carnivorous economic fish fries such as ricefield eels, perches, mandarin fishes and snakeheads. According to the application of the spartina alterniflora straw provided by the invention, compared with tenebrio molitor larvae obtained by traditional wheat bran culture, the nutrition ingredients are not lost, and meanwhile, the culture cost of the tenebrio molitor is greatly saved. After the bred tenebrio molitor larvae are used as live initial feed, the initial feeding desire of the monopterus albus fries is obviously improved, and then the growth performance of the monopterus albus fries is enhanced.

The invention belongs to but is not limited to the technical field of fish culture, and discloses a fish feed for improving growth performance and feed utilization of snakeheads and a preparation method of the fish feed, and 500-1000mg of hydrolyzed tannic acid is added into every 1000g of compound feed. The basic formula comprises 350g of fish meal; 110 g of soybean meal; 140 g of corn protein powder; 88 g of rapeseed meal; 60 g of high gluten flour; 120 g of cassava starch; 50 g of fish oil; 25 g of soybean oil; 30 g of a mineral premix; premixing 10 g of vitamin; 5 g of vitamin C; 1 g of choline chloride; and 1g of ethoxyquin. According to the invention, 500-1000mg / kg of tannic acid is added into the basal feed, so that the growth performance and feed efficiency of the snakeheads are improved, the body fat content of the snakeheads is reduced, and the oxidation resistance of livers and the health condition of the livers are improved. The snakehead feed has the effects of improving snakehead growth and feed utilization, improving liver health and improving meat quality.

The utility model discloses a sectional type floating fish barrel, relates to the technical field of fish protection, and provides the following scheme aiming at the problems that the existing fish barrel cannot be stably placed due to continuous floating of the water surface and is easy to overturn and sink into water due to unexpected conditions: the sectional type floating fish barrel comprises a fish barrel which is divided into an upper part and a lower part, the periphery of the inner wall of the upper fish barrel is connected with a floating ring, the lower fish barrel is used for storing a water source to enable snakeheads to survive, a sealing zipper or a buckle type sealing ring is externally connected between the upper fish barrel and the lower fish barrel, and the sealing zipper is used for opening and closing the fish barrels. Mesh cloth is connected to the periphery of the interior of the upper fish barrel and the lower fish barrel, and the sealing zipper is matched with the mesh cloth to drive water inside the fish barrel and water outside the fish barrel to flow and exchange to keep water temperature and oxygen content. The floating ring is arranged in the second box barrel in a surrounding mode, it is guaranteed that the fish barrel can stably float on the water surface, and sudden sinking is prevented.

The utility model discloses an oxygenation device for snakehead culture, which relates to the technical field of aquaculture and comprises a culture pond, adjusting components are mounted in two ends of the culture pond, a first connecting block and a second connecting block are symmetrically arranged in the culture pond, a locking component is mounted in the first connecting block, and one end of the second connecting block is rotatably connected with a rotating column. A mounting plate is fixedly connected to the outer side wall of the rotating column, a mounting seat is fixedly connected to the upper end of the mounting plate, a rotating assembly is mounted in the mounting seat, a rotating disc is rotationally connected to the bottom end of the mounting seat, and an oxygenation device body is mounted at the bottom end of the rotating disc. By adopting the structure, oxygen can be better dispersed into a water body, and the contact area between the water body and the oxygen is increased, so that the dissolving speed and efficiency of the oxygen are improved, sufficient oxygen supply for cultured organisms can be ensured, the device is convenient to maintain, the time for shutdown maintenance of the device is shortened, and the service life of the device is prolonged. The continuous oxygenation of the culture water body is ensured.

The invention belongs to the technical field of fish feeds, and particularly relates to a growth-promoting hybrid snakehead compound feed. Research finds that by adding a trace amount of dendrobium officinale polysaccharide into the compound feed, the weight gain rate is remarkably increased, and the fatness and the specific growth rate of the hybrid snakeheads are also increased. Therefore, the invention provides the application of the dendrobium officinale polysaccharide in the preparation of the feed additive for promoting the growth of the hybrid snakehead. The dendrobium officinale polysaccharide is added into the feed, so that the fatness of the hybrid snakeheads is remarkably increased, the growth speed of the hybrid snakeheads is increased, the breeding period is shortened, the yield in unit time is increased, and the economic benefit of breeding the hybrid snakeheads is improved. In addition, the dendrobium officinale polysaccharide is derived from natural plants, is safe and environment-friendly, does not pollute the environment or remain harmful substances, and meets the green and environment-friendly requirements. The hybrid snakehead feed can improve the fatness and growth speed of hybrid snakeheads, and has wide application prospects and value in the field of hybrid snakehead culture.

The present invention discloses an internal protection device for a swinging high-voltage tower, which comprises a connecting base, a connecting rod, a slide rail, a moving platform and a swinging member. The swinging member includes a number of monomers from top to bottom. The monomers are connected by connecting ropes, and the monomers can swing left and right with the wind. Compared with the prior art, the swinging member of the present invention is formed by connecting a number of monomers. The monomers are made of lightweight plastic material and can swing with the wind. The surface of the monomers is coated with green snake patterns, which can scare the birds near the tower during the left and right swinging process. In the present invention, the wind vane moves left and right with the moving platform. During the left and right movement of the moving platform, the shortest distance between the swinging member and the tower is adjusted, so that the distance of the Nth monomer of the swinging member is unpredictable, and its snake head shape is easier to drive away the birds.

The invention discloses a hybrid snakehead spleen cell line as well as an establishment method and application thereof, and belongs to the technical field of fish cell culture. The hybrid snakehead spleen cell line provided by the invention is named as CAMSp and is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC NO: C202598. According to the application, the spleen tissue from the hybrid snakehead is subjected to cell culture, the culture conditions of the cells are preliminarily determined, the sensitivity of the cells to the hybrid snakehead rhabdovirus (HSHRV) is detected, and a material basis is provided for researching the pathogenesis of the HSHRV, a detection method, vaccine preparation, interaction with host cells, disease prevention and control and the like.