34 results about "Weever" patented technology

The invention relates to a marine-fish environmental protective compound feed, consisting of the following materials in weight ratio: 13 to 20 portions of domestic fish powder, 8 to 15 portions of biological fish meal ABP600, 8 to 12 portions of soybean meal, 10 to 18 portions of peanut bran, 3 to 10 portions of corn, 3 to 7 portions of cotton seed meal, 3 to 7 portions of rapeseeds meal, 3 to 5 portions of meat and bone meal, 3 to 5 portionsof squid bowels powder, 20 to 30 portions of high gluten flour, 1.0 to 3.0 portions of blood meal, 1.0 to 2.0 portions of soybean lecithin, 2.0 to 3.0 portions of marine-fish oil, 0.3 to 0.6 portions of choline chloride (50%), 0.05 to 0.1 portions of Vitamin C phosphate (35%), 0.15 to 1.5 portions of calcium biphosphate, 0.2 to 0.5 portions of compound multiplex vitamin, 0.5 to 1.5 portions of compound mineral salt, 0.1 to 0.3 portions of feed attractant, 0.1 to 0.3 portions of micro-bio-preparation, 0.03 to 0.08 portions of A3Alpha peptidoglycan, 0.01 to 0.04 portions of phytase, and 0.04 to 0.08 portions of non-starch polysaccharase. The compound foodstuff can meet the nutrition demands of such high density cultivated marine fishes such as weever, large yellow croaker, American red fish, sparidae fishes, and trachinotus ovatus and rudd etc, and the cultivated objects can rapidly grow and has high foodstuff conversion rate; the compound foodstuff can intensify the immunity and anti-stress ability of fishes and endow them with good vitality, vivid body color and high survival rate; compared with marine fished cultivated by other foodstuffs, the excretion rates of nitrogen and phosphorous of the marine fishes cultivated by the compound foodstuffs is lowered by 10 to 15 percent, and cause smaller contamination to the cultivation water body.

The invention discloses a combined method for breeding weever in a runway and intercropping crayfish in a paddy field. The method of breeding the weever in the runway and a method of breeding the crayfish in the paddy field are combined. After residual feeds and excrement of the weever in the breeding runway are centralizedly absorbed, the residual feeds and excrement are drained into the paddy field for intercropping the crayfish through pipelines, so that the crayfish takes the residual feeds, the paddy field absorbs the excrement, and the water quality is purified. Besides, the water body rich in nutritive matter like nitrogen and phosphorus is drained out of the runway, and is pumped into paddy field ditches and the paddy field through a waterwheel aerator, so that aquatic plants and rice in the paddy field ditches absorb the nutritive matter like nitrogen and phosphorous in the water body and purify the water quality. Through the combination, the water body of the paddy field becomes flowing water, the growth of the crayfish is facilitated, the waste in the breeding runway is turned into things of value, the water body of a purification area outside the runway is also fully utilized, and zero-drainage of breeding wastewater is achieved; meanwhile, land is fully utilized, and the maximal yield is achieved. It can be achieved that the annual yield of 50 mu of land is 473 Kgof rice, 229 Kg of crayfish and 51,838 Kg of the weever, and the average benefit per mu reaches 8,810 RMB.

The invention discloses feed additive which improves the flavor of sea water cultivating fish. The feed additive consists of four or more than four types in aspartic acid, glutamic acid, glycin, arginine, lycine and L-carnitine by proportion. 0.5 percent to 5 percent of the feed additive which improves the flavor of the seawater cultivating fish of the invention is added in seawater fish feed, so that the total contents of amino acid and flavor developing amino acid required in fish is obviously improved, the content of saturated fatty acid is obviously reduced and the contents of unsaturated fatty acid is obviously improved, wherein, EPA and DHA are obviously improved; the content of inosinic acid in the fish is obviously improved. The feed additive which improves the flavor of sea water cultivating fish of the invention can obviously improve the flavor of the seawater fish, such as large yellow croaker, weever, etc., improve the contents of the flavor developing amino acid and the inosinic acid in the fish, reduce the content of body fat, and improve the content of the unsaturated fatty acid. The additive is safe without public harm and residue; the seawater fish cultivated by the additive meet the green food sanitation requirements.

The invention relates to a water treatment technique, in particular to a method for biological resource recovery of industrial marine fish aquaculture wastewater. In the method, macroscopic algae, filter feeders, sediment animals and carnivorous fishes are cultured in the industrial marine fish aquaculture wastewater of which the water temperature is between 4 and 27 DEG C to form a biological filter to treat the wastewater discharged by industrial fish aquaculture, wherein the macroscopic algae are warm water macroscopic algae and cold water macroscopic algae; the filter feeders are filtering seashells and fishes, the seashells comprise one or more of oyster, sea-mussel and scallop, and the filtering fishes are barracudas; the carnivorous fishes comprise one or more of weever, flounder and black marine rock fish; and the sediment animals are Stichopus japonicus Selenka. In the method, based on the ecology principle, the macroscopic algae, the filter feeders, the sediment animals and the carnivorous fishes are combined together, and the macroscopic algae, the filter feeders, the sediment animals and the carnivorous fishes coordinate with one another and serve as the biological filter to comprehensively treat the wastewater discharged by the industrial fish aquaculture.

The invention discloses a cultivation method of polyculture of California weever and yellow-head catfish, which belongs to the technical field of aquaculture, and relates to biological and ecological habits of California weever, yellow-head catfish, silver carp and spotted silver carp, in particular to a 5-30-mu and 1.8-2.8-meter deep pond chosen for the polyculture of the California weevers and the yellow-head catfish and technologies and methods such as a strict preliminary processing, reasonable fish seeds stocking time and density, the mixed feeding of iced fresh fish and extruded feeds, the water quality management, the disease control, the fishing and harvest and the like. The California weevers do not have strong feeding desire for fish blocks and fish mince sink to the bottom of the pond so that the rot of residues of the iced fresh fish is caused with water quality rotten and bacteria breeding. In the California weevers cultivation pond, the yellow-head catfish are polycultured for feeding food residues, the silver carps are polycultured for controlling the generation of blue algae, and the spotted silver carps are polycultured for controlling the generation of plankton, thereby the balance and stability of cultivation eco-system is maintained in the pond, substance and energy flow smoothly in the system, the water quality environment is good, the constitution of cultivated aquatic animals is healthy, the possibility of disease occurring is reduced, the feed coefficient is lowered, and the culture benefit is increased. The method is feasible in technology, which is pioneering in the domestic California weever cultivation field, and is convenient to be applied for cultivation enterprises and aquatic farmers, thereby owning broad prospects.

The invention relates to a low-pressure medium fresh-keeping method of weever slices, which belongs to the technical field of fish fresh-keeping method, and the method comprises the following steps of (1) slicing: cutting off the head and removing bones of fresh weever, and washing and slicing the weever; and (2) storage: placing the weever slices into a decompression device to be stored, adopting a continuous pumping decompression way, humidifying fresh air through a humidifier, and introducing the medium gas to maintain the pressure, wherein the air pressure is 5 to 15kPa, the air humidity is more than 85 percent, and the medium gas is formed by mixing carbon dioxide (CO2), oxygen (O2) and nitrogen (N2). The low-pressure medium fresh-keeping method has the following advantages that 1, the weever slices can be directly stored without being precooled through the decompression fresh-keeping way; 2, the fresh-keeping period of the fish can be prolonged; 3, due to the medium gas, the fresh-keeping period is prolonged and the fresh-keeping effect is improved; 4, the low-temperature cold storage way can inhibit the growth and breeding of microorganisms; and 5, the weever slices are packed through a light-proof packing material, so that no survival condition is provided for the microorganisms.

The invention relates to a weever breeding device. The weever breeding device comprises a base, a fixing box, a filter screen box, a fishing mechanism and a drainage mechanism, wherein the fishing mechanism comprises a driving assembly and a limiting assembly, the driving assembly comprises a motor, a lead screw, a threaded block, a supporting rod, a fixing plate, a transverse plate, a fixing rod, a sleeve and a spring, and the drainage mechanism comprises a water tank, an electromagnetic valve, a water inlet pipe and a water outlet pipe. According to the weever breeding device, drainage in the fixing box is achieved through the drainage mechanism, water recycling is achieved, and water resources are saved; main body fishing is achieved through the fishing mechanism, meanwhile, the filter screen box can be cleaned, and the use practicability is improved.

The invention discloses a DNA Barcoding-based identification method for pelteobagrus fulvidraco, ictalurus nebulosus, weever and biological products of yellow-head catfish meat, ictalurus nebulosus and weever. The three fishes and uncooked meat products of the three fishes are identified according to lengths of edited base sequences, the method is established based on DNA Barcoding and is not limited by morphology of identification materials, and accurate conclusion can be made even only individual tissue fragments are available, so that the DNA Barcoding-based identification method can be widely applied to accurate identification on fishes and uncooked meat products of fishes.

The invention provides a high-survival-rate weever fry breeding device and method. The device comprises a water inlet pipe, a water draining pipe, a fixing support, oxygen increasing pumps, a breedingpond, a feeding tank, a warm lamp, a rotating shaft, rotating wings, an activated carbon filtering screen plate, and a heat preservation covering film. The water draining pipe is mounted below the water inlet pipe; the right end surface of the water inlet pipe is connected with breeding pond; the fixing support is installed on the upper end face of the breeding pond; the warm lamp is installed onthe lower end face of the fixing support; the inner wall of the breeding pond is covered with the heat preservation covering film; the oxygen increasing pumps are mounted at the upper side in the breeding pond; the feeding tank is mounted at the right sides of the oxygen increasing pumps; the rotating shaft is mounted at the lower ends of the oxygen increasing pumps; the rotating wings are mounted at the lower end of the rotating shaft; and the activated carbon filtering screen plate is mounted the lower side of the interior of the breeding pond. According to the high-survival-rate weever frybreeding device and method, the problem of the poor breeding effect of an existing weever fry breeding device can be solved, and the weever fry breeding device is reasonable in structure, convenientto assemble and mount, good in breeding effect, and high in practicality.

The invention provides a preservation method for weever. The preservation method comprises the following steps: removing internal organs of weever, washing the weever clean, preparing a low-temperature refrigerating fluid, bagging the washed weever, filling the low-temperature refrigerating fluid, and inflating insert gas and sealing after vacuumizing; then performing partial freezing treatment; and further freezing in a cold storage, wherein a medium for washing is an ice water mixture, the low-temperature refrigerating fluid is a mixed liquid containing sodium chloride, maltodextrin, trehalose and water, the detrose equivalent value of maltodextrin is 4-6%, the temperature of the low-temperature refrigerating fluid is 3-7 DEG C below zero, and the inert gas is nitrogen gas or argon gas.During partial freezing treatment, the weever is bagged, then the low-temperature refrigerating fluid is filled, and since the cooling speed achieved by the low-temperature refrigerating fluid is greater than the air cooling speed, and the cooling speed of the washed weever is increased; and due to the synergistic effect achieved by the sodium chloride, maltodextrin, trehalose in a specific proportion, the flesh quality of the weever is ensured, and further the weever nutrition is kept.

An artificial hatching method for micropterus salmoides fertilized eggs comprises the steps that male parents and female parents of micropterus salmoides are manually injected with oxytocin and then placed in the same pond, the area of the pond is larger than or equal to three mu, the male-female ratio is 4: 6, filtering membrane water treatment equipment is adopted for irregularly purifying water, a high-quality water source is supplied, a submersible pump is used for pumping water to produce water flow, dissolved oxygen is sufficient, and the micropterus salmoides fertilized eggs are obtained. The water quality is checked every day, the PH is kept to be 7.0-7.5, the ammonia nitrogen content is smaller than 0.4 mg/l, the nitrite content is smaller than 0.3 mg/l, and compound feed is fed according to the proportion of the female fish to the male fish so that unnecessary loss caused by earning for the mating can be prevented. By adopting the method disclosed by the invention, the weever culture becomes simple and efficient, and the weever culture area is rapidly increased.

This invention is the expressed sequence of actins' gene, which is the degenerate primer of conserved regions design from CDS sequence of related species actins' gene. It extracts total RNA from spleen of weever, then amplificates by PCR approach and clones to actins of weever. This gene sequence not only lays the foundation for the research of the effect of fish actins during DNA transcription, but also can gain the active recombinant protein so as to provide theory basic of the research of the new type immunity adjuvar.

The invention relates to a fish luring preparation for luring and fishing weevers, which comprises the following components by weight percent: 8-19 of mixed fish powder, 5-11 of chicken intestine powder, 8-11 of silkworm powder, 3-9 of goat bone powder, 2-6 of lobster powder, 2-6 of animal saprophage powder, 2-6 of plant saprophage powder, 3-9 of fish expansion powder, 3-9 of fish extruded powder, 3-9 of fish exhilarant, 2-6 of hunger acceleration powder, 8-15 of sweet corn albumen powder and 10-25 of vital wheat gluten; all the components are combined together in proportion, put into a stirring mill for stirring for 60min and are put into a dryer after being taken out, the temperature of the dryer is controlled between 35 DEG C and 45 DEG C, the time for drying is set to be 1-2 hours and the dryness of the mixture to be dried is controlled to be 60-75 percent; the mixture is put into the stirring mill again for 60min after being taken out and cooled and is put into an expanding machine for expansion, the expansion temperature is controlled to be 65-75 DEG C, the expansion time is 1 hour, the dryness of the substance to be expanded is 85-95 percent and the substance can be packaged after being taken out and cooled.

The invention relates to a universal marine fish foodstuff additive, and the adding weight scope of the marine fish foodstuff additive in one ton of marine fish compound foodstuff is 20 to 30kg. Regarding to the practical operation necessity and the physicochemical characteristics of various nutrients of the additive, the additive is divided into two main types during the preparation process, i.e., complex vitamin and complex trace element, which can be prepared respectively. Long term of cultivation experiments on such marine fishes as weever, large yellow croaker, American red fish, Sparidae fishes, and trachinotus ovatus, rud and cobia prove that: the marine fish foodstuff additive has complete nutrients, can satisfy all nutrients demands of various marine fishes cultivated in high density, and can be safely and high effectively used for a long time without toxic and side effects; and the cultivated objects can rapidly grow and has high foodstuff conversion rate and good cultivation efficiency. Furthermore, the compound foodstuff can intensify the immunity and anti-stress ability of fishes and endow them with good vitality, vivid body color and high survival rate; compared withmarine fishes cultivated by other foodstuffs, the excretion rate of nitrogen and phosphorous of the marine fishes cultivated by the compound foodstuffs is lowered effectively, which causes smaller contamination to the cultivation water body.

The invention discloses a method for high-yield culture of weever based on intelligent internet of things. The method is characterized by comprising the first step of selecting a reservoir with an area of 50-300 mu, and constructing an internet aquaculture monitoring platform, remotely querying water quality and dissolved oxygen parameter information through a mobile phone, a tablet computer or acomputer information terminal, analyzing and processing data, remotely controlling an aerator, and viewing dissolved oxygen parameters by a user to implement remote intelligent monitoring and control.According to the method, the data is analyzed and processed, the aerator is remotely controlled, and the user views the dissolved oxygen parameters through the mobile phone to implement remote intelligent monitoring and control.

The invention discloses an economical and environment-friendly biomass circulating perch culture system which comprises a high-density culture area and a running water culture area, a reservoir is arranged on the side, away from the running water culture area, of the high-density culture area, a high-density culture system is arranged on the high-density culture area, and a water collecting pond is arranged at one end of the high-density culture area. The high-density breeding system is connected with a water inlet of the collecting water tank through a first-stage pipeline, a water outlet of the collecting water tank is connected with a water inlet of the first-stage filter through a first-stage pipeline, and a water outlet of the first-stage filter is connected with a water inlet of the microorganism mineralizing device through a first-stage pipeline. And a water outlet of the microorganism mineralizing device is connected with a water inlet of the water decomposer through a primary pipeline. By arranging a series of structures, a high-density circulating aquaculture system is combined with low-density high-oxygen aquaculture, and a wild running water environment is simulated, so that a sustainable ecological circulating fishery aquaculture mode is realized, the aquaculture effect is improved, water resources are saved, the aquaculture cost is reduced, and the ecological circulating aquaculture system is economical and efficient.

The invention belongs to the technical field of fish culture, and particularly relates to a method for preventing and treating saprolegniasis of weever. The method comprises the following preparationsteps: 1) treating fries by medicated bath through traditional Chinese medicine liquid for 8-15min before stocking; and 2) spraying traditional Chinese medicine powder to the whole pool based on the water ratio of 80-120g/kg during attacking; continuously spraying the traditional Chinese medicine powder to the whole pool based on the water ratio of 50-80g/kg after three days, thus finishing the operation. According to the method, natural raw materials, rather than chemicals, are used; the traditional Chinese medicine components are used for preventing and treating saprolegniasis of weever; theeffect is obvious; the public nuisance is avoided; the method is green and safe, and harmless to fish and human body.

The invention relates to special bait for an explosive hook for fishing weever, which is prepared by the following ingredients (percent by weight): 6 percent to 11 percent of shell powder, 3 percent to 7 percent of flour weevil powder, 5 percent to 13 percent of lobster powder, 6 percent to 10 percent of sheep intestine powder, 3 percent to 9 percent of spiral shell meat powder, 2 percent to 4 percent of agilawood powder, 2 percent to 4 percent of fishy fragrant powder, 3 percent to 6 percent of contrastimulant powder for fishes, 2 percent to 4 percent of hunger promoting powder, 3 percent to 9 percent of potent adhesive, 5 percent to 15 percent of sweet corn protein powder, 25 percent to 35 percent of wheat protein powder and 2 percent to 6 percent of expanding powder. The powder is taken out in proportion to be mixed and put in a stirrer to be stirred for 80 minutes, and then, the mixture is taken out of the stirrer and put in a dryer, wherein the temperature of the dryer is controlled between 35 DEG C and 45 DEG C, the drying time is 1 to 2 hours, and the dryness of the dried substances is controlled between 60 percent and 75 percent; after the mixture is taken out of the dryer and cooled, the mixture is put in the stirrer again to be stirred for 60 minutes, and then, the mixture is taken out of the stirrer and put in an expander to be expanded, wherein the temperature of the expander is controlled between 60 DEG C and 95 DEG C, the expanding time is 1 hour, and the dryness of the expanded substances is controlled between 85 percent and 95 percent; and then, the mixture is taken out of the expander, cooled and then packaged.

The invention discloses a weever-carp artificial breeding method. The method includes: step 1, building a pond, wherein 1-2mu is selected as area of the pond, water depth is 1.2-1.5m, the pond is leeand sun-facing, draining and injecting ports are arranged on two sides of the pond, an aerator is arranged on the water surface of the pond, oxygen content of water is improved, and water temperaturein the pond is maintained at 25-32 DEG C; step 2, building a nest; step 3, disinfecting; step 4, removing alkali; step 5, selecting seeds; step 6, inducing spawning; step 7, spawning; step 8, hatching; step 9, breeding fries. A scientific and effective practice method is provided for artificial breeding of weevers and carps, the problem that breeding methods of existing farmers are underdeveloped,low in adult fish yield and high in cost is solved, cost needed for fish breeding is lowered, survival rate of fish breeding is increased, and fish breeding prospect is improved.

The invention discloses a sound generator for trapping weever, comprising a transformer, a capacitor and a triode, wherein the output end of the oscillating coil of the transformer is connected with the capacitor in series; the central spindle nose of the control coil of the transformer is connected with the emitting electrode of the triode by a resistance and the cathode of a power supply; the other two ends of the control coil are respectively connected with the base electrode of the triode by a diode; the central tap of the power coil of the transformer is connected with the anode of the power supply by the shunt resistance and the switch of an ammeter; one end of the power coil is connected with the collector electrode of the triode; after the other end of the power coil and the collector electrode of the other triode are grounded, the input end of the power supply is connected with a voltmeter in parallel; and the shunt resistance is connected with the ammeter in series. The fishing device has the advantages of simple structure, small volume and convenient use, and the shockwave thereof and weever sleeping frequency generate resonance, thus the weever is captured in the sleep state. The invention does not affect the living habit of the weever and has the advantage of low labor intensity during fishing.

The invention relates to a method for making and storing non-toxic rainbow trout and weever peeled specimens and identifying specimen individuals. The method comprises the steps of making and storingthe peeled specimens and identifying the specimen individuals; fixing the fish to be in a designed motion state, and manufacturing a fish head model; coating the whole surface of the specimen with a preservative film, pouring the prepared gypsum into the container, dividing the solid gypsum into a plurality of blocks after the gypsum is solidified, and taking out the fish specimen; splicing the solid gypsum together, injecting a foaming material into the solid gypsum, making the shape of the fish specimen, and taking out the fish model; according to the display mode, selecting the side face orabdomen of the fish for incision and skin stripping; degreasing the fish skin, putting the skin into water dissolved with washing powder, removing grease on the surface, degreasing by using acidic carclazyte and sawdust, and air-drying; and installing the fish skin model and the fish head model on the fish model. The method for making rainbow trout and weever specimens provided by the invention has no body damage to specimen making personnel and visitors.