107 results about "Prawn" patented technology

The present application belongs to the field of aquaculture technology, and mainly relates to a traditional Chinese medicine composition for preventing and treating acute hepatopancreas necrosis disease of prawn, a preparation method and application. The traditional Chinese medicine composition comprises the following raw materials in parts by weight: 28-32 parts of Radix Sanguisorbae, 28-32 parts of Radix Scutellariae, 18-22 parts of Phellodendri Cortex and 8-12 parts of Lonicerae Japonicae Flos. The traditional Chinese medicine composition can significantly inhibit the activity of the main pathogen of the disease, i.e. Vibrio parahaemolyticus, improve the immune function and disease resistance of prawn, and further repair the hepatopancreas and intestinal tissues of the diseased prawn, thereby achieving the effect of effectively preventing and treating the acute hepatopancreas necrosis disease of prawn.

The invention relates to a penaeus vannamei greenhouse circulating water mode pond opening which comprises a greenhouse building, a circulating water treatment system, an intelligent oxygenation system, a precise feeding system and an intelligent management and control platform. The circulating water treatment system purifies tail water through a microfilter and a biochemical pool and recycles the tail water; the intelligent oxygenation system adopts a nano aeration disc which is controlled in a subarea manner, and has a daily mode and a feeding mode; the precise feeding system realizes on-demand feeding based on machine vision and an AI algorithm; the intelligent management and control platform integrates all subsystems, and automatic closed-loop management under data driving is achieved. According to the invention, high-density, full-year, intelligent and unmanned prawn culture is realized, the yield and the survival rate are effectively improved, and the feed consumption, the labor cost and the influence on the environment are reduced.

The utility model discloses a kind of for shrimp culture's ration feeding device, the utility model relates to aquaculture technical field;Including: base, the top of the base is fixedly connected with support structure, the outer wall of the support structure is fixedly connected with storage hopper and discharge structure;The discharge structure includes drive motor, the output shaft of the drive motor is fixedly connected with connecting rod, the bottom of the connecting rod is fixedly connected with discharge block, the top of the discharge block is evenly provided with a plurality of discharge holes, the bottom of the discharge block is fixedly connected with feeding structure, the top of discharge block evenly provided with a plurality of discharge holes, with the connecting rod rotation of drive motor drive, can the feed in storage hopper ration delivery to feeding structure, compared with the mode that traditional artificial is estimated feeding amount by experience, effectively avoid the feed waste and water pollution caused by feeding too much, and the problem that feeding deficiency affects the growth of prawn.

The utility model provides a kind of clamping device, shelling equipment and shrimp production line, it is related to shrimp production technical field.First clamping piece is fixed in mounting seat, the first end of second clamping piece in first direction is connected with mounting seat, the second end of second clamping piece in first direction is free end, second clamping piece can be deformed, first clamping piece and second clamping piece are spaced apart, and first clamping piece and second clamping piece are enclosed to set up clamping space;Mounting seat is connected with driving mechanism, to make mounting seat be driven rotation by driving mechanism.In the use of clamping device, shelled shrimp is arranged in clamping space, under the action of inertia, second clamping piece deforms, and first clamping piece and second clamping piece are all attached with shelled shrimp, to clamp shelled shrimp in clamping space.Such, since second clamping piece can be deformed, this makes second clamping piece closely adhere to the curve of shelled shrimp by deformation, and the stability of shelled shrimp clamping is guaranteed.

The prawn posture self-adaption clamp comprises a downward pressing mechanism, the downward pressing mechanism is connected with a control mechanism, the bottom of the control mechanism is connected with a clamping mechanism through a rotating mechanism with a rotating shaft in the vertical direction, the clamping mechanism comprises a plane clamping piece and an arc-surface clamping piece, and the bottom end of the arc-surface clamping piece is provided with a chamfering structure bent towards the plane clamping piece. A chamfering inner side structure is arranged on the surface of one side, facing the prawn clamping position, of the chamfering structure; two sides of the control mechanism are respectively connected with a visual identification unit and a pressing mechanism; the device integrates a visual identification unit, an asymmetric clamping mechanism composed of a cambered surface clamping piece and a plane clamping piece, a rotating mechanism and a pressing mechanism, so that full-process automatic operation of prawn identification, orientation, posture adjustment and tail embedding is realized.

The application discloses a water surface weeding device for South American prawn culture, which comprises a water weed synchronous collection and removal mechanism and a water weed removal boat, wherein the water weed synchronous collection and removal mechanism is arranged on the water weed removal boat, and the water weed synchronous collection and removal mechanism comprises a fixed shaft, a conical winding roller, a cutter and a water removal assembly; the water weed removal boat is provided with a protective baffle; the fixed shaft is arranged on the protective baffle; the conical winding roller is rotatably sleeved on the fixed shaft; the conical winding roller is provided with a rotating shaft; the rotating shaft is rotatably arranged on the protective baffle; the cutter is arranged on a smaller-diameter end of the conical winding roller; and the water removal assembly is arranged on the conical winding roller. The application relates to the technical field of water surface weeding devices, and particularly provides a water surface weeding device for South American prawn culture.

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 application discloses a kind of salt and alkali land breeding with white shrimp of South America compound feed raw material crushing equipment, it is related to white shrimp of South America compound feed raw material crushing technical field, the side surface of the crushing tank is fixedly connected with control panel, the bottom of the crushing tank is fixedly connected with driving part, the side of the crushing tank away from control panel is fixedly connected with discharge part, the present application is provided with contact mechanism, the output end of driving part drives crushing rod to rotate continuously, so that when the material in the crushing tank is slowly discharged, the extrusion force of the material in the tank to sliding plate is less than the centrifugal force when crushing rod rotates, sliding plate and sliding rod are moved to the inside of the crushing tank by the action of centrifugal force, so that sliding plate drives rubber block to move to the inside of the crushing tank, while colliding with the inside of the crushing tank by rubber block, while the impact force generated by vibration, part of the impurities attached in the inside of the tank is shaken off.

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 present application belongs to the field of live transportation of aquatic products, and relates to a method for live transportation of prawns without water. The core of the method is to use a staged treatment strategy and the synergistic effect of dormancy induction liquid and moisture supply liquid. First, the prawns are adapted to the environment by fasting and gradient cooling, then they are soaked in pre-cooled dormancy induction liquid to enter a pseudo-death dormancy state and reduce metabolism. Then, the moisture supply liquid soaked sponge is used as a transportation medium, which can form a protective film on the surface of the prawn body to effectively prevent water loss and provide energy. During transportation, the prawns treated with the moisture supply liquid are placed in a sealed box filled with pure oxygen together with the moist sponge, and the prawns are transported without water at low temperature. After the transportation is completed, the prawns are placed in warm water to quickly recover. The prawn live transportation method without water prolongs the survival time of prawns in a water-free environment, improves the transportation efficiency, is simple to operate, and is suitable for large-scale long-distance transportation of prawns.

The utility model discloses an acete chinensis length measuring tool, which relates to the technical field of acete chinensis research and comprises a measuring disc, a plurality of measuring grooves are arranged on the measuring disc, each measuring groove can accommodate a single-tail acete chinensis sample, and a length scale layer is arranged in each measuring groove along the length direction so as to measure the length of the corresponding acete chinensis sample. According to the utility model, the lengths of acete chinensis samples can be measured in batches, and the measurement efficiency and the measurement accuracy are improved.

The invention belongs to the technical field of genetic engineering, and particularly relates to a double-stranded RNA preparation for regulating and controlling shrimp molting as well as a synthesis method and application of the double-stranded RNA preparation. The prawn shelling is regulated and controlled by synthesizing specific double-stranded RNA, and the preparation method of the preparation comprises the following steps: firstly, cloning a target gene cDNA sequence related to the key physiological process of prawn shelling; secondly, constructing the sequence into an in-vitro transcription vector, and extracting and purifying recombinant plasmids; and finally, synthesizing the high-purity and high-stability double-stranded RNA preparation aiming at the target gene by taking the plasmid as a template and utilizing an in-vitro transcription system. In-vivo injection experiments prove that when the dsRNA preparation is injected into the litopenaeus vannamei body, the molting process of the litopenaeus vannamei can be obviously delayed.

The utility model discloses a kind of separating screening devices for snail and fish and shrimp, relate to aquaculture equipment field.A kind of separating screening devices for snail and fish and shrimp, comprising: bottom plate, the periphery of the upper end of the bottom plate is fixedly connected with support beam, the upper end of the support beam is fixedly connected with fixed column, the upper end of the fixed column is fixedly connected with spring, the upper end of the spring is fixedly connected with first screen frame, the lower end of the inside of the first screen frame is provided with first screen hole, the lower of the first screen frame is provided with second screen frame.Solve the technical problems that the current snail and fish and shrimp sorting process, often rely on manual sorting, time-consuming and labor-consuming, especially in large-scale processing difficult to meet production demand, rely on manual sorting, time-consuming and labor-consuming, especially in large-scale processing difficult to meet production demand, and traditional screen mesh screening is only separated by single aperture, snail hard shell is easy to be stuck in screen hole, fish and shrimp are soft and easy to be squeezed and injured.

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 a crayfish pizza processing method based on green water retention of shrimp meat and a product of the crayfish pizza processing method, and belongs to the technical field of food processing. According to the invention, alginate oligosaccharide and xanthan gum are mixed to form a composite water-retaining agent to carry out dipping treatment on the small lobster meat, and ultrasonic waves are utilized to generate cavitation and oscillation effects, so that the myofibril structure of the lobster meat is loose, and the composite water-retaining agent is promoted to rapidly permeate into gaps of the myofibril of the small lobster meat, thereby improving the water retention capacity of the lobster meat; the crayfish pizza is prepared by using the crayfish pizza The green water retention method is applied to small lobster meat required by preparation of pizza, and the analysis of the change conditions of indexes such as water-holding capacity, color and texture of the lobster meat in the cold fresh storage process proves that the green water retention method can effectively maintain the water-holding capacity of the lobster meat in the cold fresh storage process and delay the deterioration of the color and texture of the lobster meat.

The utility model discloses a water purification device for prawn culture, which comprises a sediment filter tank, a biological purification tank, an adsorption tank and a disinfection tank, the top of the left end of the sediment filter tank is communicated with the bottom of a water inlet pipeline, a first control valve is arranged at the joint of the water inlet pipeline and the sediment filter tank, and the water inlet end of the water inlet pipeline is connected with a culture pond water outlet pipe; a first filter screen and a second filter screen are arranged in the sediment filter box, the first filter screen is located on the left side of the second filter screen, the right end of the sediment filter box is communicated with the left end of the biological purification box through a communication pipeline, a valve is installed on the communication pipeline, and a cleaning water inlet pipe used during cleaning is arranged at the right end of the sediment filter box. The device realizes graded filtration of solid impurities with different particle sizes in the aquaculture water, can efficiently intercept various solid pollutants such as residual feeds and shrimp shells, effectively reduces the content of suspended solids in the water, and reduces the burden for the subsequent purification link.

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 utility model relates to the technical field of shrimp catching facilities, and discloses a shrimp catching ground cage convenient to collect, which comprises a ground cage body used for catching shrimps, a lateral shrimp taking port arranged on the body and a cover plate connected with the body, and the body is provided with a first shrimp inlet, a second shrimp inlet and a third shrimp inlet. A first shrimp blocking net, a second shrimp blocking net and a third shrimp blocking net are sequentially arranged on the inner side of the first shrimp inlet, the inner side of the second shrimp inlet and the inner side of the third shrimp inlet, a top shrimp taking opening is formed in the cover plate, and a protection plate is arranged at the top shrimp taking opening and detachably connected with the cover plate. The ground cage is provided with the top shrimp taking opening and the side shrimp taking opening, when the number of prawns in the cage is large, the elastic plate is pinched and pressed to enable the clamping block to be taken down from the cover plate, then the top shrimp taking opening is opened, the prawns are poured out rapidly, and the reliability of shrimp taking is improved; when the number of the prawns in the cage is small, the sliding plate is pulled, the prawn taking opening in the side is opened, the prawns are taken out from the outlet, and the prawns are taken out from multiple outlets.

The invention discloses a prawn enterohepatic cytozoon disease comprehensive prevention and treatment and green culture method, and relates to the technical field of aquaculture and disease prevention and control. The method comprises the following steps: adding the following four medicines into a prawn feed for feeding: an antiprotozoon triazine compound, wherein the addition amount of the antiprotozoon triazine compound is 0.2-0.3% of the weight of the feed; the addition amount of the fluoroquinolone antibacterial agent is 0.5%-0.8% of the weight of the feed; the adding amount of the medicine for astringing dampness and sores is 0.8%-1% of the weight of the feed; and the addition amount of the promoting coagulant is 0.1-0.2% of the weight of the feed. Through the synergistic effect of quadruple drugs, the immunity and organ repair capacity of prawns are enhanced, the treatment effect is remarkable, and the passive state that no safe and effective chemical drugs or antibiotics can kill EHP spores in prawns at present, and once the EHP spores break out, the EHP spores can only be controlled to spread and reduce loss is changed; the worldwide problem that sick prawns stop growing or grow extremely slowly and only eat but not grow is solved, and the survival rate and the growth rate of the prawns are increased.

The application provides a production process of a microencapsulated shrimp feed for the post-larva stage, which realizes uniform proportioning of raw materials through ingredient mixing and secondary mixing, completes fine processing of the raw materials through a segmented type of crushing, forms granules at normal temperature and pressure through wet granulation, controls the moisture content of the materials through fluidized bed drying, completes fat spraying and coating processing through fluidized bed treatment, accurately selects qualified granules through detection and screening, maintains a low-oxygen state inside the package through sealing and packaging, and improves the hygiene and safety of the feed through irradiation sterilization. Each process cooperates with each other, can stably output feed granules with a particle size D90 of less than 130 mu m, effectively adds and retains heat-sensitive nutrients, guarantees the balanced nutrition of the product, improves the water stability of the feed through coating treatment, is not easy to cause water mixing when put into water, can improve the water breeding environment, and reduces feed waste. The process can realize batch production to meet the use demand of the market, and provides technical support and reference basis for the production of the post-larva stage feed.

The application discloses a large yellow croaker sea-land relay breeding management method and system based on segmented breeding optimization, which comprises the following steps: acquiring breeding environment and biological response data, carrying out breeding environment-biological coupling modeling, and obtaining a coupled digital twin; constructing a growth-quality collaborative prediction model by a physical information neural network to obtain growth-quality collaborative prediction information; establishing a multi-agent collaborative learning framework, combining the coupled digital twin for repeated trial-and-error training, and obtaining a multi-agent breeding strategy model; deploying the multi-agent breeding strategy model on an edge computing node, generating a breeding management optimization strategy according to the current breeding density and fish population state; when the large yellow croaker meets the pool-out standard, quality detection is carried out to generate a marketing scheme, and if the current time window is not the optimal marketing window, breeding progress planning management is carried out based on the breeding situation of the remaining breeding units. The application realizes intelligent management of the whole sea-land relay process and improves the breeding efficiency and economic benefits of the large yellow croaker.

The application provides a method for predicting the growth of prawns and evaluating the digestive tract in a feeding table, comprising: constructing a data set based on an improved labeling method by taking images and videos of prawns; training a segmentation model on the constructed data set, performing mask segmentation on the pictures of prawns in the feeding table, fitting a skeleton line based on the extracted segmentation mask to calculate the visual total length, and calculating the weight according to the fitted visual total length-weight power function. Calculate the area of prawns based on the extracted segmentation mask, and calculate the weight according to the fitted area-weight power function. Combined with the visual total length and area characteristics, the prawn weight is jointly predicted by using a machine learning model. The application combines image segmentation classification, traditional fitting method and machine learning model integration to create an efficient and high-precision prediction method for the growth state and feeding condition of prawns, helping farmers to achieve more efficient and environmentally friendly production management.

The application discloses a culture method for enhancing the body color of Eaststar Prawn and relates to the technical field of aquaculture. The method comprises the following steps: (1) light induction: white-red-blue-yellow light sources are alternately used for irradiation, (2) color enhancer feeding: the color enhancer is fed simultaneously with the basic feed, and the components of the color enhancer include Camellia nitidissima polysaccharide, Sargassum fusiforme polysaccharide, fucoxanthin, scallop peptide, silymarin, guanidino acetic acid and sodium butyrate, and (3) water flow stimulation. Through the regulation of physiological metabolism, nutrient absorption and environmental adaptability, the method jointly acts on the body color performance of Eaststar Prawn, is favorable for enhancing the body color of Eaststar Prawn and improving the economic value of Eaststar Prawn.

The invention discloses a litopenaeus vannamei egg membrane outer layer protein VMO1 and an application thereof in egg entering of a prawn foreign protein. The amino acid sequence of the egg membrane outer layer protein VMO1 of the litopenaeus vannamei is as shown in SEQ ID NO. 2. The litopenaeus vannamei vitelline membrane outer layer protein gene LvVMO1 is cloned from litopenaeus vannamei for the first time, and experiments prove that the litopenaeus vannamei vitelline membrane outer layer protein gene LvVMO1 is generated in the hepatopancreas tissue of the litopenaeus vannamei and enters eggs through a hemolymph way. A VMO1-EGFP in-vivo tracing test further shows that VMO1 is generated in hepatopancreas of the litopenaeus vannamei, enters the ovary through hemolymph, can carry foreign proteins such as EGFP, is transferred from an abdominal injection site and is enriched in the ovary. The invention provides an effective technical means for introducing a gene editing system into litopenaeus vannamei egg cells by using foreign proteins to realize genetic improvement and other applications of litopenaeus vannamei, and has wide application prospects and great economic values.

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 invention discloses a comprehensive utilization system for marine resources, which relates to the technical field of marine economy and comprises an evaporator, a wave energy conversion device, a solar heat collector, a shrimp heating device, a stirrer, a refrigerant circulating system, a refrigeration house and a fresh water tank. The evaporator is provided with a seawater inlet, a heating pipeline, a steam outlet, a salt discharge port and a wastewater inlet. The seawater inlet communicates with a water inlet pipeline which is provided with a water suction pump, and the wave energy conversion device drives the water suction pump. And the solar heat collector is communicated with the heating pipeline. The prawn heating device is provided with a prawn inlet, a clear water inlet, a cooked prawn outlet, a steam pipeline and a waste water outlet. The waste water outlet is communicated with the waste water inlet. The stirrer is provided with a stirring paddle, a cooked shrimp inlet, a salt inlet and a pickled shrimp outlet. The stirring paddle is driven by a wave energy conversion device, the salt inlet is communicated with the salt discharge port, and the fresh water tank is communicated with an outlet of the steam pipeline. The marine resource comprehensive utilization system can realize comprehensive utilization of various marine resources.

1. Name of this design product: Shrimp Image Acquisition Terminal (Bionic Octopus). 2. Purpose of this design: To be used as a shrimp image acquisition terminal in the field of shrimp farming. 3. The key design features of this product are its perspective view. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a prawn culture environment adaptive adjustment method and system, and relates to the technical field of aquaculture automation control. The self-adaptive adjustment method for the prawn culture environment comprises the following steps: synchronously acquiring a preset historical cooperative control time sequence data set of a temperature control device and an oxygenation device in a prawn culture water body on the basis of a set time period; inputting into a pre-trained collaborative analysis model, and extracting a control coefficient set; obtaining current values of the water temperature and the dissolved oxygen concentration in the shrimp culture water body and preset target values, and analyzing a temperature cooperative control quantity and an oxygenation cooperative control quantity in combination with the control coefficient set; according to the temperature cooperative control quantity and the oxygenation cooperative control quantity, the preset temperature control device and the oxygenation device are driven to conduct adjustment treatment on the prawn aquaculture water, the coupling relation between the water temperature and the dissolved oxygen is analyzed, the cooperative control quantity is calculated based on the coupling relation, the problem of equipment action conflict caused by traditional single-parameter independent control is solved, and the control accuracy is improved. And efficient self-adaptive regulation and control are realized.

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.