103 results about "Freshwater fish" patented technology

The invention relates to the technical field of freshwater fish culture, in particular to a freshwater fish intelligent detection and grading system based on machine vision, which comprises an image acquisition unit, an image processing unit, an image analysis unit, a grading decision unit and a control and output unit, after the image processing unit extracts a target area, the image analysis unit completes three-dimensional contour reconstruction morphological parameter calculation activity stress evaluation and body surface defect detection; the grading decision-making unit achieves specification and quality two-dimensional grading according to the multi-dimensional features, and the control and output unit drives the execution mechanism to complete sorting and generate a report. Multi-dimensional automatic detection and precise grading of the size, vitality and health condition of the freshwater fish are achieved, full-process automation of freshwater fish grading is achieved, the grading precision and efficiency are improved, the labor cost is reduced, and the method is suitable for large-scale freshwater fish breeding and processing scenes.

The invention provides a freshwater fish pond water temperature monitoring method, system, medium and equipment, and relates to the technical field of freshwater fish pond cultivation, a fish pond water temperature data set is formed based on water temperature data of different levels of a fish pond water body and data such as meteorological factors and water quality parameters, and the data set is preprocessed; according to the method, a preprocessed data set is utilized, meteorological factors of the day and a set time period are screened out to serve as forecasting factors, statistical methods such as multiple regression, stepwise regression and fuzzy clustering are adopted, and freshwater fish pond water temperature forecasting models under different weather types such as a low-temperature and low-illumination type, a rapid temperature and pressure reduction type and a high-temperature and stuffiness type are constructed.

The invention discloses a multi-nutrition-level ecological breeding system suitable for freshwater fish breeding, the ecological breeding system comprises a breeding variety combination level and an ecological niche complementary variety combination level, the multi-nutrition-level ecological breeding system has the beneficial effects that efficient utilization of resources and self-regulation of an ecological environment are realized by constructing a multi-species coordinated three-dimensional population structure; through the arrangement of the breeding variety combination level and the ecological niche complementary variety combination level, breeding objects of different nutrition levels are mutually supplemented and mutualistic, so that the productivity of the breeding system is improved, and the anti-risk capability of the system is also enhanced; the system integrates a plurality of functional modules, through application of technologies such as digital monitoring and remote control modules, real-time monitoring, abnormity early warning and remote control of the breeding environment are achieved, the water quality dynamic regulation and control module and the feeding planning module can precisely regulate and control water quality parameters and feeding plans according to growth requirements and environment changes of bred organisms, and the breeding efficiency is improved. And feed waste and water quality pollution are effectively reduced.

The invention discloses breeding equipment and method for improving the content of beneficial flavor substances in freshwater fish muscles, the breeding equipment comprises a freshwater fish breeding box, a fish feed feeding mechanism, an oxygenation assembly and a hydrogen increasing assembly, the fish feed feeding mechanism comprises a stirring box, a stirring assembly and a blowing assembly, the stirring box is installed above the freshwater fish breeding box, the stirring assembly is installed in the stirring box, and the blowing assembly is installed in the stirring box; the device is novel in structural design and convenient to operate, uniform feeding can be achieved, meanwhile, the oxygen content and the hydrogen content in a culture water body can be adjusted, the oxygen content and the hydrogen content in the culture water body can be adjusted, the oxygen content and the hydrogen content in the culture water body can be adjusted, and the device is convenient to operate and high in practicability. Wherein the hydrogen can improve the content of flavor substances in back muscles and abdominal muscles of the freshwater fish, and the flavor substances mainly enrich sweet taste, fruit taste and flower fragrance.

The invention provides an application of linoleic acid in preparation of a feed for relieving fish salinity stress. According to the application of the linoleic acid in preparation of the feed for relieving the salinity stress of the fishes, related experiments verify that the addition of the linoleic acid enhances the overall tolerance of the fishes to the salinity stress, and under the stress environment that the salinity continuously rises, the stress resistance of the fishes to the salinity stress is improved. Fish has better growth performance, lower physiological stress level, stronger antioxidant ability and immune response and healthier tissue structure, and is beneficial to increase of culture benefits of freshwater fish and marine fish.

The present invention discloses a low - serum medium and its application in the preparation of cultured meat from Larimichthys crocea cells, which is also applicable to other marine or freshwater fish, belonging to the field of bioengineering technology. The low - serum medium comprises a basal medium, fetal bovine serum accounting for 30 - 80 μL / mL, and exogenous additives. The exogenous additives include human serum albumin, ascorbic acid, basic fibroblast growth factor polypeptide, human holo - transferrin, lysophosphatidic acid, and human recombinant IGF - 1. Based on the DMEM / F12 medium, the low - serum medium provided by the present invention adds six substances that promote cell growth, reduces the dependence of satellite cells on fetal bovine serum, effectively reduces the usage amount of fetal bovine serum, and saves the culture cost. Compared with the general - type medium (DMEM high - glucose, adding 10% FBS), the low - serum medium provided by the present invention has an equivalent effect on the maintenance and proliferation ability of cell stem cells.

The invention provides a freshwater fish recirculating aquaculture system and method, and relates to the technical field of aquaculture. The culture system comprises a culture pond, a microfilter, a biological pond, a water storage pond, aeration equipment, disinfection equipment and oxygen production equipment. The freshwater fish recirculating aquaculture system has the advantages that the heights of the culture pond, the microstrainer, the biological pond and the water storage pond of the culture system are sequentially reduced, the culture pond, the microstrainer, the biological pond and the water storage pond are sequentially connected through the water return pipe, and the bottom of the water storage pond is connected with the water inlet pipe through the circulating water pump. Therefore, the running energy consumption of the whole system can be reduced, and the breeding cost is reduced; aeration equipment is arranged in the water storage tank, oxygen generation equipment connected with the aeration equipment can pump high-concentration oxygen into the water storage tank to improve the concentration of dissolved oxygen in water, water is injected into the culture pond at a certain incident angle through water outlet holes in a water inlet branch pipe in the water storage tank, a stable flow field is formed in the water in the culture pond, and the culture density of the culture system is improved.

The utility model provides a novel freshwater fish catching netting gear which comprises a freshwater fish culture pond, a vertical main beam is placed on the left side wall inside the freshwater fish culture pond, a main beam top beam is embedded between two plates at the top end of the vertical main beam, and a main beam bottom plate is fixed below the vertical main beam. A trapezoid reinforcing frame and a reinforcing triangular side plate are welded between the vertical main beam and the main beam bottom plate, a cylinder body mounting base is fixed to an upper shaft sleeve at the center end of the main beam bottom plate, and through cooperation of a net frame fishing lifting hydraulic cylinder and a fishing net frame left-right moving hydraulic cylinder, lifting and left-right moving of the freshwater fish fishing net frame can be achieved; the fishing operation is accurately carried out in the culture pond, and the fishing efficiency is greatly improved. The trapezoidal reinforcing frame and the reinforcing triangular side plates are welded between the vertical main beam and the main beam bottom plate, the structural strength and stability of the whole fishing net are improved, it is guaranteed that the fishing net can bear certain pressure and tension in the fishing process, and the risk of equipment damage is reduced.

This invention belongs to the field of aquaculture equipment and discloses a recirculating aquaculture system for indoor multi-layered culture of freshwater fish germplasm samples. The system includes a stainless steel culture rack, glass culture tanks, a temperature control system, a recirculating water purification system, an aeration system, and electrical and auxiliary materials. Through a three-layered culture structure design, combined with culture tanks of varying sizes and a precise temperature control module, it solves the problem of aquaculture with diverse sizes of freshwater fish germplasm samples and large differences in suitable water temperatures. The system has nine small glass culture tanks in the upper layer and three large glass culture tanks in each of the middle and lower layers, equipped with an external temperature control component and an internal heating rod, achieving full-coverage water temperature regulation from 10℃ to above 30℃. The recirculating water system ensures stable water quality through the synergistic effect of a filter tank, a booster pump, an ultraviolet sterilizer, and various filter media. Meanwhile, the lower culture tanks are equipped with an internal circulation filter to enhance local water purification, meeting the diverse aquaculture needs from small fry to large broodstock.

The invention discloses an LAMP (loop-mediated isothermal amplification) detection primer group for flavobacterium psychrophilum and application of the LAMP detection primer group, and belongs to the technical field of molecular biology. The method comprises the following steps: firstly, searching a specific sequence which is completely not matched with other genomes according to a whole genome sequence of flavobacterium psychrophilum, and designing a specific LAMP detection primer group according to the specific sequence; the LAMP detection primer group comprises a pair of outer primers and a pair of inner primers, and the sequence compositions of the outer primers and the inner primers are respectively shown as SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 and SEQ ID NO: 4. The primer group is used for constant-temperature fluorescent LAMP detection of flavobacterium psychrophilum, and the result shows that the LAMP detection primer group designed by the invention has a good amplification effect on detection of target flavobacterium psychrophilum, and has the advantages of strong specificity, high sensitivity, convenience and rapidness in operation and the like when being used for detecting flavobacterium psychrophilum. The method is suitable for early screening, accurate diagnosis and epidemic situation detection of freshwater fish bacterial diseases caused by flavobacterium psychrophilum.

The present application relates to the technical field of aquaculture, and especially relates to a high-density and high-benefit freshwater fish circulating water breeding method, which uses a high-density and high-benefit freshwater fish circulating water breeding pond, the breeding pond comprises a pond body, a water inlet pipe and a sewage suction pipe, etc.; a sewage ditch is formed on the pond body; the water inlet pipe is connected to the front side of the pond body; the sewage suction pipe is arranged on the back side of the pond body, and a plurality of branch pipes are arranged on the sewage suction pipe and located in the sewage ditch; the water inlet pipe and the sewage suction pipe are connected to an external filtering device, and a water pump is arranged on the filtering device. The present application realizes that the impurities at the bottom of the pond body are pushed backward to the sewage ditch by the scraper, and the straight plate part of the scraper blocks and limits the impurities in the process of backward movement of the scraper, so that the impurities are not lifted, the sewage passes through the water filtering port when the impurities are moved backward by the scraper, and thus the problem that the collection effect of the impurities is reduced due to the backward movement of the pond water caused by the scraper is avoided.

The invention discloses a multilayer detachable three-dimensional freshwater fish temporary rearing bin which comprises a bin body and a plurality of detachable temporary rearing bins located in the bin body, the temporary rearing bins are slidably arranged in containing grooves formed in the bin body, and the temporary rearing bins located on the same column are vertically aligned at equal intervals to serve as an experimental group. And a communicating assembly movably penetrating through each temporary rearing bin is arranged in each experimental group correspondingly. According to the freshwater fish temporary rearing device, distinguishing, temporary rearing, observation and experimental operation of freshwater fish can be achieved, circulation can be achieved, the communicating assembly is matched, fishes are prevented from entering other temporary rearing bins at the communicating position, connectivity of all the temporary rearing bins is assisted to be slowed down, great help is provided for observation of experimental operation such as virus resistance, infectivity and virus tolerance of the freshwater fish, and the survival rate of the freshwater fish is increased. The method has scientific research value and daily use value.

The utility model provides a multifunctional freshwater fish culture net cage which comprises a culture net cage frame, a freshwater fish net cage pool is arranged in the culture net cage frame and provided with water inlet flowing meshes, the culture net cage frame is provided with a miniature oxygenation pump, the miniature oxygenation pump is connected with an oxygenation pipe through a pipeline, and the oxygenation pipe is connected with an oxygen nozzle. The freshwater fish net cage pool is provided with a circulating pipe. The oxygen increasing system can increase the oxygen content in water, the breathing requirement of fishes is met, the vitality and growth speed of the fishes are improved, and the culture benefits are improved. By arranging a fish feed storage pipe, a fish feed feeding pipe and a fish feed discharging electromagnetic switch, accurate feeding can be achieved, waste of feed is avoided, an escape-proof mesh can effectively prevent fishes from escaping, and breeding losses are reduced. The water inlet flowing mesh holes and the circulating pipe can keep water clean and fresh, a good living environment is provided for fishes, the growth speed and the health condition of the fishes can be improved, and therefore the breeding efficiency is improved.

The invention relates to a streptomyces X-57, a microecological preparation thereof and a preparation method of the microecological preparation, the streptomyces is preserved in the China Center for Type Culture Collection, the strain preservation number is CCTCC NO: M 20242239, the classification name is streptomyces X-57, and the Latin name is Streptomyces sp.X-57. The invention also discloses a preparation method of the microecological preparation, the streptomyces is preserved in the China Center for Type Culture Collection, and the strain preservation number is CCTCC NO: M 20242239. The microecological preparation is prepared by fermenting streptomycete X-57. The invention also discloses a preparation method of the microecological preparation. A microecological preparation which is prepared from the strain through a corresponding method and is suitable for aquaculture acts on freshwater fishes in a feed additive mode and has broad-spectrum activity of inhibiting fish pathogenic bacteria, and the streptomyces X-57 is used as a feed additive to feed fishes, especially crucian. The growth performance and the immunity of fishes, especially crucian carps, can be improved, and the intestinal flora can be improved. Wherein the effect of resisting infection of aeromonas hydrophila on crucian carps is particularly remarkable, meanwhile, the culture medium can be stably colonized in the crucian carps, the immunocompetence of the crucian carps is effectively improved, and the culture medium has a certain effect of promoting the growth of the crucian carps.

The utility model provides a directional sectioning and viscera removing device for a freshwater fish body, and relates to the technical field of fish processing devices. The device comprises a fish body conveying mechanism and a sectioning, viscera-removing and cleaning mechanism, the fish body conveying mechanism clamps two running conveying belts through a clamping rotary drum, the fish body conveying mechanism can convey a fish body located between the two conveying belts along the conveying belts, and the sectioning, viscera-removing and cleaning mechanism comprises a rotating sectioning blade and a viscera-removing brush. The fish body cleaning device has the advantages that the sectioning blade of the fish body cleaning device can dig the belly of a fish body open, the viscera removing brush can clean viscera in the fish body with the belly dig open, the problem that the fish body needs secondary treatment is solved, and the fish body cleaning efficiency is greatly improved; according to the device, the high-pressure nozzle can spray high-pressure water flow to clean the fish body cleaned by the viscera removing brush, and residual blood and black membranes of the fish body are further removed. The device is stable in structure, convenient to operate, high in automation degree and suitable for industrial fish body sectioning and viscera removing processing.

The utility model relates to the field of food packaging, in particular to an anti-extrusion freshwater fish slice packaging box. The utility model provides an anti-extrusion freshwater fish slice packaging box which can be used for sub-packaging freshwater fish slices, simultaneously reduces the occupied space, is convenient to open according to the eating amount, and prolongs the shelf life of the residual freshwater fish slices. An anti-extrusion freshwater fish slice packaging box comprises a plurality of packaging boxes, rotating doors and the like, and the rotating doors are rotatably connected to the upper portions of the packaging boxes. Freshwater fish slices are subpackaged through the three packaging boxes, then the handle is held to be lifted upwards to drive the rotating sleeve to rotate, and then the handle is held to move downwards, so that the packaging boxes are stacked, the occupied space is reduced while the freshwater fish slices are subpackaged, the packaging boxes are convenient to open according to the eating amount, and the packaging efficiency is improved. And the shelf life of the remaining fillets is prolonged.

In order to prevent the bait from being grabbed by small fishes and enable the bait to smoothly fall to the water bottom in the fishing process, according to the characteristic that the small fishes only grab the bait on the upper middle layer of a water body, a bait ball hung on a hook is soaked into syrup, then put into a dry powder box and coated with light bran which is lighter than the water and added with essence and a small amount of fishbone dust, operation is repeated twice, and then the bait is thrown into the water. When the bait ball descends, water impacts the surface of the bait ball, the two layers of light bran can gradually fall off, disperse and float upwards, the attention of small fishes is transferred, the small-particle light bran which floats upwards is grabbed, and therefore the effect of shelling the cicada shells is achieved, and the bait can completely sink to the water bottom. Due to the fact that the syrup has the water absorption function and is attached to the outer surface of the bait ball, the bait ball cannot become soft and be unhooked, the bait ball is wrapped with a protective layer, meanwhile, the sweet taste of the syrup has allure to freshwater fish, and the fish luring effect of the bait can be improved. According to the scheme, in summer and autumn of 2024, the effect of trapping small fishes to grab baits is very obvious through multiple actual fishing tests of the applicant.

This invention relates to the field of freshwater fish aquaculture technology and discloses an energy-saving dual-cycle freshwater fish spawning pond system and its usage method. The system includes a spawning pond and a culture circulation treatment system connected to the spawning pond. The culture circulation treatment system includes a first circulation tailwater treatment system and a second circulation tailwater treatment system. The first circulation tailwater treatment system includes a side drainage pond connected to the side wall of the spawning pond and a first inlet pond. The second circulation tailwater treatment system includes a vortex egg collection pond connected to the bottom of the spawning pond. The vortex egg collection pond is connected to the spawning pond through a multi-stage sedimentation pond and a second inlet pond. An egg collection pond is connected to the bottom of the vortex egg collection pond. The vortex egg collection pond and the egg collection pond together form the spawning circulation treatment system. The spawning pond system of this invention adopts a dual-cycle treatment system, combining long-term high-density culture, spawning, and automatic egg collection functions. During the use of the spawning pond, water circulation is achieved through air lifting and water propulsion, resulting in high efficiency and low energy consumption.

The utility model relates to the technical field of aquaculture, and discloses an oxygenation device for freshwater fish culture, which comprises a floating seat, an antenna is fixedly mounted at the top end of a waterproof cover, an oxygenation and aeration component for aeration and oxygenation is arranged on the bottom side of the floating seat, three telescopic rods are fixedly mounted on the outer side of the waterproof cover in an array manner, and the three telescopic rods are connected with the antenna. A connector is fixedly installed at the telescopic end of the telescopic rod, a floating ball is fixedly installed at the bottom end of the connector, and an anti-collision protection assembly is arranged on the outer side of the floating ball. According to the oxygenation device for freshwater fish culture, the paddle blades are driven to rotate in water, a water curtain can be formed in a water stirring mode to increase oxygen dissolution, a static water body can be activated, water flow can form bubbles through air holes in the paddle blades, the oxygenation and aeration effect is further improved, and the oxygenation effect is improved. Meanwhile, the protective cover covering the outer side of the paddle blade can prevent nearby fishes from being sucked into vortexes to cause injury.

The utility model relates to a freshwater fish breeding technical field, and the utility model discloses a multi-angle adjustable freshwater live fish photographing device, the isolation frame is fixedly arranged in the transparent water tank, a plurality of baffle plates are arranged in the isolation frame, rotating rods are fixedly arranged on the upper and lower sides of the baffle plate, the lifting mesh plate is movably arranged in the transparent water tank and is located at the left side position of the isolation frame, two threaded rods are rotatably arranged on the lifting mesh plate through screw threads, the lower end of the threaded rod is rotatably inserted on the inner bottom wall of the transparent water tank through the bearing, the connecting frame is fixedly arranged on the left side of the upper portion of the transparent water tank, the driving rod is rotatably arranged in the connecting frame through the bearing, the upper end of the threaded rod is rotatably inserted in the connecting frame through screw threads and is drivenly connected with the driving rod through the bevel gear pair, the motor is fixedly arranged on the front side wall of the connecting frame, the camera is fixedly arranged on the three-axis electric pan-tilt head, the activity range of fish can be limited, the fish need not be frequently fished out to cause the stress reaction, and the fish can also be prevented from swimming randomly to be difficult to capture the clear photo.

The utility model discloses a freshwater fish bloodletting production line which comprises a fish collecting tank, a fish feeding crawler belt, a conveying track, a fixed fish clamp, a laser displacement sensor, a hydraulic gill cover clamp, a high-frequency vibration cutter and a bloodletting pool. One end of the fish feeding crawler belt is located in the fish collecting groove, the other end of the fish feeding crawler belt extends upwards in an inclined mode and is connected to one end of the conveying track, the other end of the conveying track extends into the bloodletting pool, the fixed fish clamp is arranged on the conveying track in a sliding mode, and the laser displacement sensor and the hydraulic gill cover clamp are sequentially installed on the conveying track front and back. And a high-frequency vibration cutter is mounted on the upper side of the hydraulic gill cover clamp. Compared with the prior art, the full-automatic freshwater fish bloodletting device has the advantages that full-automatic control is adopted, manual bloodletting work of freshwater fish is completely replaced by machinery, the technical standard is unified, the freshwater fish processing cost is reduced, and the working efficiency is improved.

The invention discloses a method for extracting fish oil from viscera of freshwater fish, which comprises the following steps: removing gall bladder, swim bladder and intestinal digests in the viscera of freshwater fish, cleaning, draining, and crushing to obtain viscera paste; putting the minced viscera into deionized water, carrying out microwave treatment, then adjusting the pH value to 6.5-7.5, and then adding neutral protease and an antioxidant to carry out enzymolysis reaction, so as to obtain an enzymolysis mixture; and performing centrifugal layering on the enzymolysis mixture, collecting a fish oil layer, and performing distillation purification to obtain the fish oil. According to the extraction method disclosed by the invention, a microwave-assisted enzymolysis technology is adopted to accelerate a reaction process, an oil-soluble natural antioxidant in-situ antioxidant technology is combined to inhibit fat oxidation, and the fish oil is purified by a molecular distillation technology, so that the product quality is improved; the technology can improve the fish oil extraction efficiency, reduce the production cost, reduce the environmental pollution, and ensure the high quality and high purity of the fish oil.

A separation and purification device for freshwater fish suction metacercaria relates to the technical field of metacercaria separation and purification devices, and comprises a closed reaction box, the closed reaction box is composed of four sections of detachable structures in threaded connection, a coaxial double-layer tool bit is arranged in the box, and the rotating speed is controlled by a motor to realize high-speed crushing of fish meat and low-speed stirring of digestive juice; spraying heads are arranged on the circumference of the upper portion of the box body to prevent materials from hanging on the wall. Simulated human body digestive juice is injected into digestive juice pipes in stages. The box body is provided with a primary gradient filter screen and a secondary gradient filter screen, and graded enrichment of metacercaria is achieved in cooperation with a bottom collecting A heater, a temperature sensor and a controller are integrated outside, a constant-temperature digestion environment is maintained, and metacercaria is inactivated at high temperature after treatment. The device adopts an integrated closed design, aerosol pollution is effectively avoided, mechanical crushing, biological digestion and physical inactivation technologies are combined, the metacercaria extraction efficiency, obtaining quantity and operation safety are remarkably improved, and the device is suitable for the field of parasite detection of laboratories and medical institutions.

The invention discloses application of ginseng leaf polysaccharide in relieving fish quality decline caused by water hypoxia, and belongs to the technical field of aquatic product culture. The ginseng leaf polysaccharide is applied to relieving fish quality decline caused by water hypoxia for the first time, and by adding the ginseng leaf polysaccharide, the problems of fish muscle oxidative damage, poor texture property, low nutritional value and the like caused by hypoxia stress can be effectively improved; the invention provides a new relieving technology for improving fish quality decline caused by hypoxia in culture, provides technical support for improving fish quality of cultured fishes under intensive culture conditions, improves freshwater fish culture benefits, and solves the problem of lack of a safe and reliable method for relieving fish quality decline caused by hypoxia in a water body at present.

The invention discloses a technology for salinizing slimming fish by using mountain spring water, and relates to the technical field of fish fries, and the technology comprises the following steps: step 1, culturing fish fries, step 2, conditioning and treating wounds by using Chinese herbal medicines, and step 3, salinizing and slimming. In the step 1, various types of freshwater fishes can be bred, fish fries are put into a common fish pond for breeding, feeding is performed every day, and adult fishes are bred, and in the step 2, the adult fishes are put into a new fish pond, and medicaments are added for conditioning and preventing saprolegniasis. According to the step 3, sea salt of 5-15 DEG C is added into water according to different fish fingerlings, a circle of sea salt is evenly scattered on the periphery of the fish pond at the beginning, the sea salt is dissolved and kept for one week, water is changed after one week, the sea salt is added again, the content of the sea salt is increased by one degree at the moment, circulation is conducted in this way, one part of sea salt is added every week, the salt tolerance of the freshwater fish is increased, and the freshwater fish can appear on the market after 30-60 days. According to the present invention, the meat quality of the fish can be well changed, the fish has no mud taste and no fishy smell, the meat quality is firm, fresh and sweet, the parasites in the fish body can be completely killed, and the harmful bacteria can be reduced to the minimum.

The present application relates to the freshwater fish culture technical field, especially be a kind of freshwater fish intelligent detection and grading system based on machine vision, including image acquisition unit, image processing unit, image analysis unit, grading decision unit and control and output unit, image acquisition unit acquires multi-view image sequence under controlled illumination environment, after target area is extracted by image processing unit, image analysis unit completes three-dimensional profile reconstruction form parameter calculation activity stress evaluation and body surface defect detection;Grading decision unit realizes double-dimension grading of specification and quality according to multidimensional characteristics, and control and output unit drives actuating mechanism to complete sorting and generate report.The present application realizes the multi-dimension automatic detection and accurate grading of the size, activity, health condition of freshwater fish, realizes the whole process automation of freshwater fish grading, improves grading accuracy and efficiency, reduces labor cost, and is suitable for large-scale freshwater fish culture processing scene.

The utility model relates to the technical field of cultivation, in particular to a feed feeding device for freshwater fish culture, which comprises a base and a throwing device, the upper surface of the base is fixedly connected with a box body, the upper surface of the box body is provided with a cover plate, the surface of the box body is provided with a maintenance plate, the side surface of the box body is provided with a discharge port, and the feed port is provided with a feed inlet. The throwing device is arranged on the side face of the box body, the throwing device comprises a throwing box and a supporting rod, the supporting rod is fixedly connected with the side face of the box body, the throwing box is located below a discharging port in the side face of the box body, and the lower surface of one end of the throwing box abuts against the upper surface of the supporting rod. According to the device, the throwing device is arranged, so that feed is effectively thrown, the effect of throwing the feed is achieved, and the situation that when the device is used, the device feeds at one position to feed and breed freshwater fishes and the freshwater fishes eat the feed, the device is prone to crowding at one position, and the peripheral freshwater fishes cannot effectively eat the feed is reduced; the feeding performance of the equipment is improved.

A method of preparing procollagen from freshwater fish includes pressure treatment and separation of fish tissue, emulsification, homogenization, refrigeration, cleaning, extraction, homogenization, inactivation, homogenization, and filtration. In the mixing and emulsification step, freshwater fish tissue containing collagen is mixed with a surfactant to remove endotoxins to below 0.25 EU / ml. The procollagen is extracted following the step of adding enzymes and an acid solution of pH 3 to 6 to the pretreated tissue. The extraction technique can extract and retain greater amounts of procollagen while preserving the intact, tightly twisted triple-helix bonds of procollagen.

The utility model discloses a high-immunity anti-stress freshwater fish compound feed stirring device, which relates to the technical field of feed stirring devices and comprises a stirring device main body, and one side of the stirring device main body is rotatably connected with a fixing frame. According to the stirring device for the high-immunity anti-stress freshwater fish compound feed, the driving motor drives the driving gear to drive the meshed driven gear, and the driven gear drives the meshed gear ring to drive the stirring device main body to rotate in the fixing frame, so that the mixed feed in the stirring device main body is poured out; compared with a vertical stirring tank which discharges the internally mixed feed through a bottom discharging pipe, the stirring device body which is transversely placed can pour the internally mixed feed at a time, workers can conveniently and rapidly start next stirring and mixing, and the stirring device body which is transversely placed in the fixing frame and has the same size can conveniently and rapidly stir and mix the feed. Compared with a vertical stirring tank, the feeding height is lower, so that a worker can feed materials conveniently, and the stirring tank is more convenient to use.

The utility model relates to the field of fish culture ponds, in particular to an ecological circulation freshwater fish culture device, which adopts the technical scheme that the ecological circulation freshwater fish culture device comprises a culture pond, a collection box, a planting net plate, a water stop plate, a bottom cleaning block, a reset spring and a micro water pump, the water stopping plate can be driven to ascend along the inner wall of the third groove body by pulling the handle so as to control the water stopping plate to be opened and closed, and therefore the mobility of water between the culture pond and the collecting box is controlled, the water stopping plate can be driven to ascend along the inner wall of the third groove body, and the water quality is improved. The reset spring can drive the handle and the water stop plate which lose handheld power to descend and reset, and the servo motor can drive the lead screw to drive the front support and the rear support to drive the bottom cleaning block to conduct reciprocating scraping and cleaning along bottom sediment of the culture pond. And sediments at the bottom of the culture pond can be scraped into a collecting box to be automatically collected.