33 results about "Bighead carp" patented technology

The present invention belongs to the field of aquatic biological breeding, and specifically relates to a method and application of creating germplasm without intermuscular spines of economic fish for breeding. runx2b The economic fish, Megalobrama amblycephala, is gene-edited using a gene as the target gene. F0 generation fish with mutations are selected and cultured as parent fish. The F1 generation is produced by mating and breeding the F0 generation mutant male and female parents. F1 fish without intermuscular spines are screened and cultured to adult fish for use in cultivating a new germplasm of Megalobrama amblycephala without intermuscular spines. The present invention utilizes a gene mutation method to obtain a new germplasm of the economically cultivated fish, Megalobrama amblycephala, without intermuscular spines. This provides an improved method for solving the problem of the significant impact of intermuscular spines in the muscles of important aquacultured economic fish such as silver carp, bighead carp, carp, crucian carp, and bream in my country on their consumption and processing. It also provides a basis for subsequent research on the molecular formation mechanism of intermuscular spines, and has important scientific research value and industrial application value.

The invention relates to the field of aquatic food traceability, in particular to a system for identifying wild and culture sources of bighead carps and application of the system. The system comprises: a sample processing module, wherein the sample processing module is at least used for processing a bighead carp sample to obtain original data of a polypeptide as shown in any one of SEQ ID NO.1-7, and obtaining proteome component response of a to-be-detected sample; the data processing module is at least used for importing the proteome component response of the sample to be detected into an OPLS-DA classification discriminant analysis model to obtain a score plot for discriminant analysis of subsequent sample data; and the result output module is at least used for outputting a result. The system can be effectively used for identifying wild and culture sources of bighead carps, is high in stability and specificity, does not need to use a large instrument, is low in detection cost, and has a wide application prospect in the aspect of aquatic product traceability.

The invention relates to the technical field of underwater acoustic detection, and discloses a detection method for detecting silver carps and bighead carps on a large water surface based on a side-scan sonar technology, and the method comprises the steps: generating and transmitting an orthogonal multi-frequency coding pulse signal to a water body; receiving an echo signal formed by target scattering of the orthogonal multi-frequency coded pulse signal; processing the echo signal, and extracting a dynamic feature vector reflecting the moving attitude of the target; processing the echo signal, and extracting an actually measured resonance scattering spectrum reflecting acoustic characteristics of the target structure; calling a preset dynamic resonance correlation model based on the dynamic feature vector, and generating a predicted resonance scattering spectrum; and comparing the actually measured resonance scattering spectrum with the predicted resonance scattering spectrum, and calculating to obtain a dynamic matching score. A set of multi-dimensional and high-threshold identification criteria is established by constructing a high-dimensional fusion feature space containing dynamic features and dynamic matching scores and comparing the high-dimensional fusion feature space with a preset standard silver carp and bighead carp target feature domain.

The invention discloses a method for regulating and managing the culture water quality of onychostoma macrolepis, which comprises the following steps: S1, acquiring the water quality condition of a culture area, and monitoring water quality data in real time; s2, regulating and controlling the water area of the culture area according to the water quality data obtained in the S1; s3, managing the substrate in the breeding area, and cleaning residual feed and excrement; s4, controlling the amount of plankton, transplanting aquatic plants in the culture area, and mixing the aquatic plants with silver carps and bighead carps; s5, regularly adding a disease prevention additive into the feed for feeding. Compared with the prior art, the method has the advantages that water quality data are comprehensively monitored, and targeted regulation and control are conducted on a water area of a culture area according to the data.

The application relates to the technical field of aquatic product monitoring, and discloses a large yellow croaker swimming speed monitoring method and system based on target detection, which comprises the following steps: acquiring a to-be-monitored image of a target water area, real-time environmental flow rate data and real-time water body turbidity data of the target water area; performing target detection on the to-be-monitored image to obtain coordinate data of the large yellow croaker; performing linkage verification on the coordinate data to obtain verified coordinate data; determining real-time posture features of the large yellow croaker according to the verified coordinate data; optimizing the real-time posture features through a flow rate phase joint mechanism to obtain optimized posture features; and constructing a posture fluid coupling model according to the optimized posture features and the real-time environmental flow rate data to determine the swimming speed of the large yellow croaker. The application fully considers the influence of the posture of the large yellow croaker and the environment, and combines the biomechanical features to realize accurate calculation of the real swimming speed of the large yellow croaker.

The utility model discloses a kind of unloading's hypophthalmichthys nobilis square block hooks, including buoyancy plate and main line, the outer surface of the buoyancy plate is fixedly connected with a group of extension rods, the end of each extension rod away from buoyancy plate is fixedly connected with middle pipe arm, the inside of the buoyancy plate is fixedly embedded with bearing, the outer surface of the buoyancy plate is equipped with cover bait plate.The device is cooperated with first spring and second spring by the sub-line hook and intermediate line hook of setting, when hypophthalmichthys nobilis fish hook struggles violently, the great impact force generated by it can be converted into spring's elastic potential energy, thereby being effectively buffered and absorbed, avoid instantaneous rigid tensile force exceeding fish hook strength or fish lip tissue bearing limit, leading to fishing hook failure, can effectively solve the problem that because hypophthalmichthys nobilis is middle upper layer filter-feeding fish, impact force is stronger, many traditional hypophthalmichthys nobilis square block hooks cannot carry out unloading when fishing group is impacted, prone to unhooking phenomenon, will seriously affect user fishing experience problem.

The invention relates to the technical field of fish catching, and particularly discloses a bighead carp catching device which comprises a purse seine assembly used for breeding and a positioning plate arranged at the top of the inner side of the purse seine assembly, and a telescopic piece and a catching net used for lifting a caught target object are installed at the bottom of the positioning plate; the fence assembly comprises a fence frame, a breeding area is formed in the inner side of the fence frame, supporting bases are arranged on the two sides of the inner wall of the breeding area, and the two ends of each supporting base are matched with one end of a telescopic piece and used for fixing a fishing net. The supporting seats on the two sides of the inner wall of the purse seine assembly are matched with the telescopic pieces and the supporting frames, the fishing net is stably fixed in a culture area, the problem that fish schools are difficult to concentrate in the center area of the fishing net during net pulling fishing is solved, the probability that bighead carps escape is reduced, and the fishing efficiency is improved. For example, in actual fishing, the fishing net can be accurately placed in an area where bighead carps are dense through close fit of the supporting frame and the supporting base, and the fishing success rate is effectively increased.

The invention belongs to the technical field of food processing, and discloses a use method of a phosphorus-free water-retaining agent suitable for silver carp and bighead carp heads. The method comprises the following steps: selectively depolymerizing a mucus layer on the skin of a fish head by using alkaline protease, trehalose and a sodium citrate pretreatment solution through a mucus layer nanopore channel induction-low-temperature vacuum tumbling synergistic permeation process to form 50-200nm through micropores; and then combining vacuum rolling and kneading at 4 DEG C to drive non-phosphorus water retention components such as sodium carboxymethyl cellulose and L-arginine to uniformly permeate into muscular tissues at a depth of more than 8mm. According to the method disclosed by the invention, a set of complete, controllable and efficient phosphorus-free water retention technical system is constructed through cooperative regulation and control of interface microstructure engineering and mass transfer kinetics, so that not only is the problem of core quality deterioration in deep processing of silver carp and bighead carp heads solved, but also a transferable technical normal form is provided for phosphorus-free preservation of other high-mucus covering type aquatic products.

This invention discloses a method for large-scale freshwater silver carp and bighead carp farming, comprising the following steps: S1: Selecting a large reservoir or lake surface; S2: Stocking fry weighing 0.15–0.25 kg from the current year's breeding period between late October and mid-December; wherein the ratio of silver carp to bighead carp is 7:3–6:4; S3: After a growth cycle of 1.5–4 years, the silver carp and bighead carp grow into adult fish, which are then harvested and marketed. Since silver carp primarily feed on phytoplankton, especially diatoms and green algae, and are typical filter-feeding fish, a higher proportion of silver carp is used, thus enhancing the water purification effect. Furthermore, the reservoirs in the Lianyungang area are mostly flatland reservoirs, where silver carp thrive in shallow water; therefore, this stocking ratio of bighead carp to silver carp is also suitable. This method achieves water purification through the farming of large-scale freshwater silver carp and bighead carp. First, put fish food outside the large mesh net; this will help avoid the impact of fishing on the growth of smaller fish.

The utility model discloses a lure hard bait capable of being added with food bait, which comprises a bait body, a longitudinal partition plate and a transverse partition plate, and an accommodating space is arranged in the bait body. The containing space in the bait body is divided by the longitudinal partition plate to form a first containing cavity and a second containing cavity. The first accommodating cavity is partitioned by the transverse partition plate to form a bait bin and a water flow bin; a water inlet is formed in the front end of the water flow bin and communicated with the outside, water flow through holes are formed in the outer wall of the water flow bin, and water enters from the water flow bin, is blocked by the longitudinal partition plate, circulates between the bait bin and the water flow bin and then flows out from the water flow through holes. A common lure bait in the market is a fake bait instead of a real traditional bait, the variety of the lure bait is single, and generally, the lure bait is a fierce fish. According to the utility model, the bait is added so as to adapt to various fishes, such as grass carp, silver carp, bighead carp and the like.

The invention discloses a method for regulating and controlling the population number of lake coilia ectenes in a lake, which comprises the following steps of: increasing the population number of carnivorous fishes such as culter culter and mandarin fish in the lake through the measures of establishing a propagation and proliferation protection area, fishery management and the like; the population biomass of carnivorous fishes (fishes taking the lake coilia ectenes as main baits) such as culter culter and mandarin fish in the lake reaches about 1 / 30 of the population biomass of the lake coilia ectenes; the method comprises the following steps: by establishing a breeding and proliferation protection area and taking measures of fishery management and the like, increasing the population quantity of whitebait in a lake, and enabling the population biomass of whitebait (including protowhitebait and hemisalanx breviscapus) having a bait competition relationship with the coilia ectenes in the lake to reach about 1 / 2 of the population biomass of the coilia ectenes; by adopting measures such as a secondary release mode and fishery management, the population biomass of silver carps and bighead carps having a bait competition relationship with the coilia ectenes in the lake reaches about 1 / 1 of the population biomass of the coilia ectenes. The limitation of a current single fishing means can be made up, so that the diversity of lake biological populations can be effectively improved, and the water area environment can be optimized.

The utility model discloses a novel silver carp and bighead carp fishing tackle group, and belongs to the field of fishing tackles, the silver carp and bighead carp fishing tackle group comprises a fishing line and a silver carp and bighead carp hook fixedly mounted at one end of the fishing line, the end of the fishing line is wound and fixed on the silver carp and bighead carp hook, and a sleeve extending from one end of the silver carp and bighead carp hook to one end of the fishing line sleeves the connection position of the silver carp and bighead carp hook and the fishing line; the silver carp and bighead carp hook is sleeved with a buoyancy bean for tilting the silver carp and bighead carp hook. According to the silver carp and bighead carp fishing tackle group, the sleeve sleeves the handle part of the silver carp and bighead carp hook to wrap the joint of the fishing line and the silver carp and bighead carp hook, then the buoyancy bean sleeves the silver carp and bighead carp hook and is put into water, the silver carp and bighead carp hook body is light, the buoyancy bean is made of a foam material, the floating effect is good, and an inclination with a certain angle is formed between the buoyancy bean and the fishing line; therefore, the silver carp and bighead carp hook transversely enters the mouth of the silver carp and bighead carp when the silver carp and bighead carp bite the hook, the contact area of the silver carp and bighead carp hook and the mouth of the silver carp and bighead carp is increased, the hooking probability is improved, the visibility of the buoyancy beans in water can be increased, and the silver carp and bighead carp are further attracted to bite the hook.

This invention discloses a molecular marker for identifying the body size of bighead carp and its application, belonging to the field of molecular breeding technology for aquatic animals. The molecular marker is a SNP site on the cathepsin Bb gene, whose nucleotide sequence exhibits a G / C polymorphism at position 1907, named g.1907.G>C. This SNP site is located on intron 4 of the cathepsin Bb gene. The genotype of this SNP site is significantly correlated with the body weight of bighead carp, and individuals with the CC genotype have significantly higher body weights than those with the GC genotype. This invention can rapidly and accurately screen for bighead carp individuals with superior body size, providing technical support for marker-assisted breeding of bighead carp and improving breeding efficiency.

The utility model relates to a head-body ratio measuring device for aquatic animals, which comprises a workbench, a measuring scale is arranged on the workbench, and the measuring scale comprises a fixed arm and a rotating arm; the device further comprises a light generation assembly, the light generation assembly comprises a fixed light source and a movable light source, the fixed light source is arranged on the fixed arm, the light generation assembly has horizontal and vertical adjusting capacity, light emitted by the fixed light source and the movable light source is staggered on the aquatic animals to be tested, and measurable included angle light is formed on the workbench. The head-to-body ratio measuring device is suitable for measuring the head-to-body ratio of various aquatic animals, and is suitable for measuring the head-to-body ratio of aquatic animals with different thicknesses, such as procambarus clarkii, bighead carps and the like, in different sizes by adjusting the height of the movable measuring line.

The invention provides bighead carp low-fat emulsion gel surimi printing ink as well as a preparation method and application of the bighead carp low-fat emulsion gel surimi printing ink. The method comprises the following steps: preparing a 1-4% (w / v) BCM particle suspension or BCS particle suspension by using a 200-1000mmol / L KCl solution, magnetically stirring, adjusting the pH value of the suspension to be neutral, hydrating for 24 hours, adding soybean oil, and homogenizing to obtain BCMPEs gel or BCSPEs gel; the preparation method comprises the following steps: carrying out unfreezing and blending pretreatment on minced bighead carp, adding 10-30% (w / w) of BCMPEs gel or BCSPEs gel, and uniformly mixing to obtain the minced bighead carp low-fat emulsion gel surimi ink. By optimizing a formula and a preparation process, the 3D printing material has good 3D printing adaptability, and a high-precision and high-stability product can be printed; the characteristics of minced fillet gel are improved, low fat is realized, and the nutritional and edible requirements of special crowds are met.

The invention discloses a high-yield and high-efficiency breeding method for whitebait. The method sequentially comprises the following steps of breeding water area selection, water area trash fish removal, water area pathogen killing, bait organism breeding, fry putting, ecological management and high-efficiency fishing. Wherein the seedlings are put in an alternate-catching and alternate-putting mode, and the seedlings are put in batches; 10%-20% of fertilized eggs are supplemented every year to achieve resource proliferation. According to the whitebait breeding method, fishing in autumn can make whitebait reach the commodity specification of 4-6 cm. Fishing before reproduction is achieved in March to April in spring, resource waste is avoided, and efficient fishing is achieved; the large water surface is more beneficial to natural proliferation, seedlings are put in batches, annual production is achieved, and high yield is achieved. 10%-20% of fertilized eggs are supplemented every year, and the population density is maintained. Silver carps and bighead carps are matched to regulate water quality and improve comprehensive benefits. And the reasonable yield per mu can reach 15-25 kg.

This invention relates to the field of fish processing technology and discloses a bighead carp processing device, including a descaling module, an internal organ cleaning module, and a head and tail separation module. The descaling module includes a descaling mechanism and a evisceration mechanism. The internal organ cleaning module includes a movement mechanism and an evisceration mechanism. The evisceration mechanism is configured to insert into the abdomen of the fish along a second direction to scrape off the internal organs. The movement mechanism is configured to drive the evisceration mechanism to move relative to the fish body to remove the internal organs. A conveying module is used to transport the fish body sequentially through the descaling mechanism, the evisceration mechanism, and the evisceration mechanism. The head and tail separation module includes a separation mechanism, a support plate, and a blade. The support plate is used to support the fish body after evisceration, and the separation mechanism is configured to adjust the position of the blade to separate the fish head and body. This invention connects multiple fish processing steps through a conveying module, and also avoids the problem of inconsistent quality caused by manual processing. The processing efficiency of the fish body is higher, and the processing quality is more stable and reliable.

The invention discloses a geographic bighead carp population tracing method based on a minimum feature allele combination, and belongs to the technical field of aquatic food tracing and population genetics. The method comprises the following steps: firstly, constructing a microsatellite initial database of a bighead carp group with a known geographic source; then, through a multi-stage screening process combining allele frequency filtering, Fst value screening and step-by-step discriminant analysis performed by using a specific F value threshold (entering 3.84, deleting 2.71), screening out a minimum feature allele combination with extremely small quantity and extremely strong discriminant force from a large number of allele; based on the combination, establishing a linear discriminant function by adopting linear discriminant analysis; for to-be-detected bighead carp individuals, rapid and low-cost geographical traceability can be completed only by detecting the genotype of the combination and calculating the distinguishing score of each group to which the bighead carp individuals belong. According to the method, the number of microsatellite sites which need to be detected is reduced from 15 to 5, the cost is saved by more than 60%, and the judgment accuracy rate reaches 100%.

The present application relates to the technical field of fishery resources monitoring, in particular to a method suitable for big water surface group monitoring and counting of aar fish, according to the type of water area, the grid dynamic distribution of acoustic signal receiving station is carried out, the joint positioning method of more than three points based on TDOA, combined with the weighted least square method to calculate the accurate coordinate of the marked aar fish, and the behavior of the aar fish is judged, so as to master the activity area of the individual fish after the individual fish cluster through the marking of the individual fish, combined with the water depth, water temperature and water quality data, the characteristics of the fish habitat are obtained, and the fish activity range and rule are obtained. Based on the behavior habit of fish, the monitoring range is divided, the population monitoring and counting are carried out through the fish sonar scanning, the problems of big water surface fish population monitoring difficulty and fish population repeated counting are reduced, and the precision of the monitoring and counting result is improved. The scheme of the present application has the characteristics of non-damage, full coverage, high precision and standardization, and is suitable for big water surface aar fish resource investigation, evaluation of aar fish population release effect and ecological fishery management.

The invention discloses a free amino acid multi-index identification system for bighead carp identity tracing and application of the free amino acid multi-index identification system. The free amino acid multiple indexes comprise at least three of aspartic acid, glycine, alpha-amino n-butyric acid, methionine and 3-methylhistidine. The identification system comprises a method for distinguishing wild and cultured bighead carps, and the method comprises the following steps: measuring the content of amino acids in a specific combination in a sample to be detected, inputting the content into a preset logistic regression model to calculate a wild probability value, and comparing the wild probability value with a distinguishing threshold value optimized and determined through an ROC curve, so as to judge a source. According to the technical scheme, the specific biomarker for bighead carp source discrimination is defined for the first time, and the problem that a traditional experience discrimination method is high in subjectivity is solved. By constructing the quantitative model, rapid, objective and high-precision discrimination is realized, and the discrimination accuracy of the optimal combination model can reach 97.8%. The method provides reliable technical support for identifying illegal fished catches in fishery administration law enforcement in the Yangtze River basin, and has important significance for protecting wild bighead carp resources.

The invention provides a method for controlling algae by using young silver carps and bighead carps, and relates to the technical field of ecological restoration of water bodies. The method provided by the invention comprises the following step: the weights of fry of the young silver carp and the bighead carp are both 5-9g. According to the method, the young silver carps and the bighead carps are adopted for controlling algae, the growth speed of the young silver carps and the bighead carps is high, the fry source is wide, the cost is relatively low, and a large amount of food is needed in the growth process to meet the energy requirement. The algae control capability of the young silver carps and bighead carps is evaluated through a system, it is determined that the content of chlorophyll a in water can be remarkably reduced through the method, and the control effect of the young silver carps and bighead carps on cyanobacterial bloom is clear.

This application discloses a special fishing rig for silver carp and bighead carp, belonging to the field of fishing tackle. The fishing rig includes a fishing line, a bait hanger that moves axially on the fishing line, and a hook structure fixedly set at the bottom of the fishing line. The hook structure includes a long rod and a silver carp and bighead carp hook fixedly connected to the bottom of the long rod. A buoyancy bead for lifting the silver carp and bighead carp hook is fixedly set on the hook. In this way, when in use, by extending the rod of the bighead carp hook connected to the fishing line and cooperating with the buoyancy bead, the hook structure rotates upward at a 60°-120° angle around the ring connected to the fishing line, causing the hook to tilt and float upward. Then, under the suction of the bighead carp, the hook can move laterally into the mouth of the bighead carp, increasing the contact area between the hook and the mouth of the bighead carp, thus solving the problem of the traditional bighead carp hook blocking the mouth. At the same time, in addition to providing buoyancy, the buoyancy bead may also increase the visibility of the entire device in the water, especially in murky water, which helps to attract bighead carp from a distance.

The invention relates to a molecular identification method, in particular to a molecular identification method of a swimming bladder of Nibea dispinosa and a processed product thereof, and provides a novel molecular identification method based on a characteristic primer, namely identification is carried out by designing a specific primer through a PCR (Polymerase Chain Reaction) technology. The result shows that the swim bladder of the Nibea dispinosa and the swim bladder of the processed product fried Nibea dispinosa have a single obvious strip at 500-700bp, and the counterfeit product (the swim bladder of the large yellow croaker, the swim bladder of the small yellow croaker and the swim bladder of the bighead carp) has no strip. And rapid identification of authenticity of the maibea dispinosa swim bladder and the processed product thereof can be realized.

The application belongs to the field of fish immunology, and discloses a kind of CD4-1 + The application discloses a rat anti-grass carp CD4-1 monoclonal antibody of T cell, a hybridoma cell strain and application. The preservation number of the hybridoma cell strain is CCTCC NO: C2024235. Compared with existing grass carp CD4-1 monoclonal antibodies, cell grouping by using the monoclonal antibody for flow cytometry staining is more obvious and specific, and the monoclonal antibody can be used for flow cytometry specific recognition of CD4-1 + T cell of six kinds of cyprinid fishes such as grass carp, blue carp, silver carp, bighead carp, crucian carp and / or amur catfish. + The application provides an important tool for subsequent research on the role and mechanism of CD4-1 + T cell in the immune response of cyprinid fishes.

This invention relates to the field of aquaculture technology and discloses a large-scale silver carp and bighead carp seedling cultivation equipment, including a cultivation net cage. A support frame one is installed near the top of the inner wall of the cultivation net cage, and a support frame two is installed near the bottom of the inner wall of the cultivation net cage. A partition net is installed between the inner wall of the support frame two and the inner wall of the cultivation net cage. An oxygen distribution mechanism for uniform oxygen distribution is provided inside the cultivation net cage. The oxygen distribution mechanism includes an oxygenation drive component and an oxygen distribution component. This invention, by setting a differentially rotating oxygen delivery main pipe and a fan-shaped blocking plate, can intermittently block the first oxygen delivery nozzle, causing the internal air pressure of the oxygen delivery branch pipe to periodically increase. This significantly increases the air output rate of the second oxygen delivery nozzle and the nozzle branch pipe, effectively enhancing the oxygen supply intensity near the outer water area of ​​the cultivation net cage. It specifically compensates for the low dissolved oxygen in the outer water body due to its distance from the air source, greatly improving the uniformity of oxygen distribution throughout the entire net cage area.

1. The name of the design product: bag for packaging of silver carp and bighead carp bait. 2. The use of the design product: for packaging of silver carp and bighead carp bait. 3. The design points of the design product: in the combination of shape, pattern and color. 4. The picture or photo that best shows the design points: front view. 5. The design for which protection is sought includes color. 6. The design product is a thin product, and the left, right, bottom and top views are omitted.

The invention relates to the technical field of biological detection, and discloses a primer, a probe and a kit for detecting aeromonas hydrophila based on fluorescent PCR (Polymerase Chain Reaction) and application of the primer, the probe and the kit. A primer and fluorescent probe combination is obtained by designing and screening a specific gene conserved region of aeromonas hydrophila. The specific amplification of the aeromonas hydrophila gene based on the fluorescent PCR technology can be successfully realized. According to the method, the detection accuracy and sensitivity are improved, the aeromonas hydrophila can be detected in the early stage of bacterial septicemia of silver carps and bighead carps, prevention and control of bacterial septicemia of silver carps and bighead carps are facilitated, and the basic requirements of field detection of farms can be met.

1. The name of the design product: fishing line group (slide drift of silver carp and bighead carp finished line group). 2. The use of the design product: for a fishing line group. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view. 5. The top view and bottom view have been shown in the submitted view, and the top view and bottom view are omitted.

The invention discloses an intelligent underwater detection automatic feeding device for hexagrammos otakii, and relates to the technical field of fish feeding equipment.The intelligent underwater detection automatic feeding device comprises a feeding equipment body, a feeding pipe is arranged below the feeding equipment body, a pipeline cleaning mechanism is arranged in the feeding pipe, and the pipeline cleaning mechanism comprises a first motor arranged in the feeding pipe; a driving rod is arranged at the output end of the first motor, a first bevel gear is fixedly connected to the side, away from the first motor, of the driving rod, a second bevel gear is in meshed connection with the lower portion of the first bevel gear, a threaded rod is fixedly connected to the side edge of the second bevel gear, and a threaded cylinder is in threaded connection with the side, away from the second bevel gear, of the threaded rod; the lower portion of the threaded cylinder is fixedly connected with a connecting rod, and the side, close to the threaded cylinder, of the connecting rod is fixedly connected with a hollow cleaning disc, so that feed residues attached to the inner wall of the pipeline are effectively cleaned, the feeding efficiency is improved, cleanliness of the feeding pipeline is guaranteed, and waste and pollution caused by the feed residues are avoided.