68 results about "Marine fish" patented technology

The invention relates to marine fish breeding, and particularly discloses an indoor full-artificial breeding method for black epinephelus, which specifically comprises the key technical links of nutrient enrichment of parent fish, hormone induced spawning, artificial insemination and fertilized egg incubation, indoor breeding of fry, compound feed domestication and the like. By controlling water temperature, illumination, salinity and nutritional conditions, synchronous maturation and efficient ovulation of parent gonads of the epinephelus nigatosus are achieved, the fertilization rate reaches 95% or above, and the hatching rate exceeds 85%. According to the method, the whole-process artificial controllable breeding of the epinephelus nigatosus from the parent fish to the fry is realized, a new variety is provided for the epinephelus culture industry, and a feasible technical approach is also provided for the artificial breeding and improved variety breeding of the wild epinephelus nigatosus in the island reef of the South China Sea.

The invention discloses a fish and shellfish symbiosis seaborne net cage culture system and method, and relates to the technical field of aquaculture, and the method comprises the following steps: arranging a culture net cage in an offshore sea area; fish fries are put into a surrounding net, bivalve shellfishes are put into a shellfish culture piece cage, and the shellfish culture piece cage is hung in the culture net cage; feeding bait irregularly, checking the integrity of the shellfish culture cage and the covering condition of attachments regularly, and making a treatment means according to the covering rate; in the later period of culture, the adult fishes with the body length exceeding a preset value are caught irregularly in a fishing mode, and after the culture period is finished, the remaining adult fishes are caught in a concentrated mode by increasing the height of the purse seine; the shellfish culture piece cage is lifted out of the water surface to collect adult shellfish. The culture system disclosed by the invention comprises a culture net cage and shellfish culture piece cages, wherein the shellfish culture piece cages are hung in a purse seine. According to the method, mutualism of marine fishes and bivalve shellfish can be achieved, the resource utilization rate and the culture benefits are improved, and diversified fishery development can be achieved.

The utility model relates to a marine fish large-scale fry breeding incubation net cage, which comprises at least one incubation net cage, each incubation net cage comprises an outer cage body, an isolation flexible film is arranged at the position 1 / 3 away from the bottom in the outer cage body, a net bag is arranged in the outer cage body above the isolation flexible film, a through rotating main shaft is arranged in the outer cage body below the isolation flexible film, and the rotating main shaft is connected with the isolation flexible film. Fan blades are fixed on the rotating main shaft at intervals, the fan blades are oval, the rotating main shaft is located at the non-midpoint position of the long axis of the fan blades, and every two adjacent fan blades are symmetrically distributed with the rotating main shaft as the axis; one end of the rotating main shaft is connected with a transmission assembly; and the other end of the rotating main shaft extends into the adjacent hatching net cage. The fan blades which rotate along with the rotating main shaft to alternately jack up different positions of the bottom of the net bag are arranged at the bottom of the hatching net cage, so that roes deposited at the bottom of the net bag are turned over, oxygen deficit of the roes is avoided, the number of the roes placed in a single net cage can be properly increased, and the hatching scale is increased.

The application discloses a kind of mild extraction observation counting device and method of marine fish fry, and device includes sequentially connected suction line, observation platform, weak fry sorting device and overflow drain pipe.Suction line is equipped with variable frequency negative pressure pump and transparent steel wire hose;Observation platform is equipped with multistage slow-flow buffer structure inside, and observation area and shooting fixed mechanism are equipped in side and top;Weak fry sorting device is equipped with cyclone flow guide structure inside, and form rotating flow field, so that weak fry is detained in central slow-flow area and is discharged through bottom discharge port, and healthy fry is discharged from top with outside water flow;Overflow drain pipe inlet is bent upwards, and automatic overflow drainage is realized.The application integrates fry mild suction, dynamic counting, cyclone weak fry elimination, automatic drainage and raw water replacement, has no exposed metal, high waterproof level, adapts to seawater environment, significantly reduces fry damage rate and labor cost, and is especially suitable for transportation and screening of marine fish fry such as Epinephelus, Pseudosciaena crocea and the like.

A formula, APSW (Anti Pathogen Seawater), for preparing seawater for fish farms and aquariums that contains some or all the normal ingredients of sea salt with the exception of having low or no sulfates. Testing by the applicant has revealed that sea water without sulfates eliminates amyloodiniosis (Amyloodinium ocellatum), one of the most serious diseases of warm water marine fish.

This invention relates to the field of aquatic compound feed technology, specifically to a special feed for mullet, silver carp, and golden carp cultured in saline-alkali land in Northwest China. The feed is characterized by being composed of the following raw materials by weight percentage: 10%–14% alfalfa meal, 16%–22% soybean meal, 16%–22% corn meal, 5%–7% molasses, 1%–3% yeast powder, 2%–5% lactic acid bacteria preparation, 2%–5% premixed feed for aquatic life in saline-alkali land in Northwest China, 1%–4% fish oil, and 1%–5% vegetable oil. This invention solves the problems of low survival rate, high feed conversion ratio, easy antagonistic inactivation of probiotics, fish oil oxidation, poor water resistance of pellets, and insufficient regional adaptability of traditional feeds. Compared with commercially available ordinary marine fish feeds, the survival rate of juvenile fish is increased by 15% to 30%, the feed conversion ratio is reduced by 10% to 20%, the Vibrio inhibition rate is ≥80%, the power consumption per ton of feed is reduced by 25% to 35%, and the raw material cost is reduced by 30% to 45%. It is suitable for large-scale aquaculture in saline-alkali land in Northwest China and has important value for improving the quality and efficiency of fisheries, ecological restoration, and rural revitalization.

The invention provides a compound feed additive for relieving stress response of marine fishes, which is prepared by the following steps: mixing raw materials such as hermetia illucens protein and the like to prepare a premix, and embedding the premix by using a lac-glycyrrhizic acid system to prepare lac microcapsules; then modifying the fucoidin by adopting glycyrrhizin and gamma-linolenic acid, embedding rhodosporidium palustris and bacillus pumilus by using the fucoidin to prepare compound bacterium nano-particles, and finally mixing the lac microcapsules and the compound bacterium nano-particles in proportion. According to the invention, excessive secretion of cortisol of marine fish can be effectively inhibited, hermetia illucens protein provides rich nutrition and reduces muscle decomposition, and compound microorganisms are beneficial to maintaining intestinal microecological balance and improving the utilization rate of nutrition. The prepared compound feed additive can be directly splashed into a culture or transportation water body or added into a feed, so that the stress reaction of the marine fish is effectively relieved, the survival rate of the marine fish is increased, and powerful support is provided for culture of the marine fish.

The invention belongs to the technical field of parasite sampling, particularly relates to an imported marine fish pathogenic parasite sampling and detecting device, and provides the following scheme aiming at the problems of low manual sampling efficiency, inaccurate positioning and easy sample damage in existing marine fish parasite quarantine. Comprising a sampling base, a movable supporting plate, a sampling area identification assembly, a sampling pipe and a negative pressure separation assembly. The sampling area identification assembly can losslessly and accurately position a suspected parasite infection area in a fish body. The sampling pipe is provided with an annular gas guide cavity and an annular liquid guide cavity, sterile gas and normal saline can be sprayed cooperatively, and minimally invasive and efficient stripping and recycling of insect bodies are achieved. The negative pressure separation assembly adopts a double-chamber design, a micro-filtration membrane is arranged in the negative pressure separation assembly, a sample can be shunted and independently treated in single operation, and a negative pressure liquid extraction pipe of the negative pressure separation assembly has an automatic valve function of negative pressure ventilation and normal pressure closing, so that subsequent in-situ fixation is facilitated. According to the invention, the whole process automation from precise minimally invasive sampling to automatic separation and fixation is realized.

The present application belongs to the technical field of nutritional functional food and health food, and particularly relates to a preparation method of marine fish skin collagen oligopeptide beneficial to promoting skin health, and a product and application thereof. The method comprises the following steps: after deep sea fish skin is pretreated by salt dissolution with a NaCl solution, trisodium citrate is added as an enzymolysis aid, and neutral protease (from Trichoderma reesei) and papain are sequentially used for two-step enzymolysis, and after enzyme inactivation, impurities are removed, sterilization is performed, and concentration, drying are performed to obtain the product. In vitro cell experiment verification shows that the product can significantly promote human skin fibroblast proliferation; in vivo animal experiment verification shows that the product can significantly increase skin moisture content, reduce transdermal water loss, increase hydroxyproline content, improve SOD activity and reduce MDA content. The product is suitable for the field of nutritional functional food and health food, and has a good application prospect in promoting skin health.

The marine fish air-sea high-yield method is characterized in that a plurality of pump ships are arranged and combined into a circle, a water area in the circle is a giant net bag bottom bait area, the bait is blue whale mother and child and excrement of the blue whale mother and child, and the excrement leaks to the seabed through the giant net and is diffused to the peripheral sea area outside the bait area; a large-range rich water sea area (high-yield area) is formed, the high-yield area contains large, medium and small marine fishes and shrimps and allows a large number of fishing boats and biogas boats to enter the area for operation, meanwhile, blue whale sonar can be used for inducing distant blue whale, tiger whale or crowd whale to straightly strive to the high-yield area to leave excrement so that rich water can be more fertile, and the huge net can filter out large fishes and only allows small fishes and shrimps to enter the net. The permutation and combination pump ship ring is just like a high-yield area haunch, and a plurality of operation ships in the high-yield area can enter the haunch to avoid typhoons. According to the invention, the whale does not fall into all things, but the whale live into all things, in other words, all the blue whales can be cared for life by the invention and can sleep for life. Fishermen do not need to run around the sea any more, and only need to stay in high-yield areas of the sea.

The utility model provides a marine organism collecting and classifying device, and mainly relates to the field of organism collecting and classifying equipment. A marine organism collecting and classifying device comprises a collecting barrel. The fish collecting device has the advantages that fishes of different sizes are classified according to the sizes by arranging the collecting barrels separated by the multiple stages of classifying plates, the rotating structures and the baffles are further arranged so that all the partitions can rotate, and influences between the fishes of different sizes are prevented through separation of the baffles; furthermore, a water inlet and outlet structure is arranged in the device, so that seawater flow can be controlled from the upper part to flow into the classification device to provide a living environment for marine fishes and discharge the internal water flow, and a multi-stage classification plate is arranged to be of a spiral structure, so that the multi-stage classification plate can be matched with a baffle to rotate to drive the fishes to be moved out step by step in a multi-stage manner; mutual influence caused by simultaneous discharge of fishes with different sizes is avoided.

The application discloses a kind of construction method and application of seawater fish muscle stem cell line, culture medium with basic medium as background medium;Culture medium includes LIF growth factor, EGF growth factor and leopard bristletooth-derived FGF2 protein;The final concentration of leopard bristletooth-derived FGF2 protein is 20~30 ng / mL, 30~45 ng / mL, 45~55 ng / mL or 55~70 ng / mL. Through the medium, immortalized seawater fish muscle stem cell line with good stability, cell division vigorous, short subculture time can be constructed, and can be stably subcultured for more than 50 generations. It provides raw materials for exploring the function of myoblasts, gene regulation mechanism, and provides the prerequisite for in vitro verification experiment for further exploring the influence of seawater fish muscle stem cells on growth rate, and lays a foundation for good strain breeding of seawater fish.

The application provides a turbot compound immune enhancer, a preparation method and application thereof. The application discloses application of a composition containing a series of components in preparation of a turbot immune enhancer, and the immune enhancer can effectively improve expression of a proinflammatory related gene of the turbot, reduce a number of bacteria in a liver or an intestinal tract, enhance a bactericidal capacity of the turbot, enhance an antioxidant stress capacity of the turbot, relieve liver damage of the turbot after being infected by bacteria, and relieve tissue damage of the turbot after being infected by bacteria. The immune enhancer component is simple, environment-friendly, low in cost and ideal in effect, and provides a new scheme for improving a breeding level of marine fish and improving a survival rate.

The present application belongs to the technical field of compound feed for marine fish, and particularly relates to a feed for improving the antioxidant enzyme activity of juvenile Hexagrammos otakii and a preparation method thereof. The feed for improving the antioxidant enzyme activity of juvenile Hexagrammos otakii is prepared from the following raw materials in mass percentage: 95% to 96.5% of basic ingredients, 1% of compound vitamins, 1% of compound mineral salts, and 1.5% to 3% of an antioxidant enzyme activity composition, and the sum of the mass percentages of the raw materials is 100%; the antioxidant enzyme activity composition is composed of vitamin C and beta-carotene, and the mass ratio of vitamin C to beta-carotene is 1 to 3: 1 to 3. The feed for improving the antioxidant enzyme activity of juvenile Hexagrammos otakii obtained by the present application not only can provide sufficient natural antioxidant components to enhance the antioxidant defense mechanism of the juvenile fish, but also can effectively solve the problems of slow growth, low feed utilization rate, and water pollution of juvenile Hexagrammos otakii caused by insufficient antioxidant activity.

The present application belongs to the technical field of bioactive peptides, functional food and biological medicine, and particularly relates to a marine fish-derived xanthine oxidase inhibiting heptapeptide NPLVTPP and its application in reducing uric acid. The present application discloses a marine fish-derived heptapeptide NPLVTPP with xanthine oxidase inhibiting activity, and the amino acid sequence of the heptapeptide is Asn-Pro-Leu-Val-Thr-Pro-Pro. The heptapeptide can be prepared by solid-phase chemical synthesis or marine fish protein enzymatic separation and purification, can significantly inhibit xanthine oxidase activity, reduce uric acid generation, can effectively reduce serum uric acid level in a hyperuricemia animal model, and can improve high uric acid related kidney function damage. The present application also protects the application of the heptapeptide in preparing xanthine oxidase inhibitors, uric acid reducing products, products for preventing or improving hyperuricemia and kidney damage, and a medicine, food or nutritional composition containing the heptapeptide. The polypeptide sequence of the present application is clear, the target is clear, the in vivo and in vitro efficacy is clear, the source is safe, and the polypeptide can be used in the fields of functional food and biological medicine.

The invention discloses a special diet for improving cardiovascular and cerebrovascular diseases and microcirculation disturbance and a preparation method thereof, and the special diet comprises the following components in parts by weight: 2-4 parts of bone collagen peptide, 1-2 parts of taurine, 2-3 parts of hydrolyzed collagen peptide, 1-2 parts of marine fish oligopeptide, 1-2 parts of inulin, 1-2 parts of erythritol, 2-3 parts of acerola cherry fruit powder and 2-3 parts of guarana extract. 1-2 parts of N-acetylneuraminic acid, 1-2 parts of vitamin C, 1-2 parts of vitamin B6, 1-2 parts of vitamin B1 and 1-2 parts of vitamin B2; the traditional Chinese medicine composition can improve cardiovascular functions and microcirculation disturbance, and has remarkable effects in the aspects of inhibiting cardiovascular diseases, promoting microcirculation and enhancing immunity.

This application discloses a safety protection structure for transporting marine fish, relating to the field of seafood transport technology. It includes a belt, a support frame, two drive rollers, and a drive motor. The support frame supports the two drive rollers, which are rotatably connected to the support frame. The belt passes around the two drive rollers sequentially. The drive motor drives the drive rollers to rotate. The belt surface is provided with several magnetic strips, which are sleeved on the outside of the belt and arranged parallel to the belt width. The drive roller at the belt output end is a magnetic roller. A support plate is fixed inside the support frame, located between the two drive rollers and inside the belt. A permanent magnet is fixed to the lower end of the support plate near the magnetic roller, and an electromagnet is fixed to the side of the permanent magnet away from the drive roller. A collection component is provided at the lower end of the support frame for collecting metallic impurities. This application improves the ease of separating marine fish from impurities.

The application discloses a preparation method of marine fish source methacrylated gelatin GelMA hydrogel and application thereof, and successfully prepares GelMA by using marine fish source gelatin, forms the hydrogel by ultraviolet curing through a photo initiator lithium phenyl-2, 4, 6-trimethyl benzoyl phosphonate (LAP), and successfully realizes 3D culture of cells. The marine source GelMA has the characteristics of sustainable source and high biological safety, the process of photo curing into gelatin is mild, fast, small in cell damage, simple in operation, and can be applied to the fields of cell culture, tissue engineering, drug screening and personalized treatment, and the like, and at present, marine source GelMA is less reported, and has a good market prospect.

The utility model discloses an integrated commercial seafood fishpond which comprises an aluminum alloy profile frame and a plurality of first longitudinal beams installed on the surface of the aluminum alloy profile frame, middle-layer fishponds are installed on the upper surfaces of every two adjacent first longitudinal beams in a sliding mode, and the middle-layer fishponds slide front and back in the extending direction of the first longitudinal beams. A double-column type guide supporting table is arranged below the first longitudinal beams, two sliding frames are installed at the moving end of the double-column type guide supporting table, and a Y-axis lead screw pushing module is installed at the top ends of the two sliding frames. According to the utility model, when cleaning and maintaining are carried out by a worker, the middle-layer tank can be pushed out to a position where the operation is convenient only by simply operating the pushing module, so that the labor intensity of the worker is greatly reduced, the tedious operation caused by a narrow space is avoided, and the daily maintenance becomes more efficient.

The application provides a fish solubilized pulp calcium chelating protein peptide and a preparation method thereof. The fish solubilized pulp calcium chelating protein peptide is prepared by using fish solubilized pulp protein as raw material, adopting neutral protease and alkaline protease for enzyme hydrolysis, and then performing separation and purification and freeze-drying. The fish solubilized pulp calcium chelating protein peptide has a molecular weight of 792.413 Da and an amino acid sequence of Arg-Val-Phe-Asp-Lys-Glu. The fish solubilized pulp calcium chelating protein peptide prepared by the application can be used for producing a novel peptide calcium chelating agent, and has the characteristics of excellent performance, high bioavailability, safety and non-toxicity. The application provides a new idea for high-value utilization of low-value marine fish and processing waste.

This invention discloses a method for constructing and applying a marine fish muscle stem cell line. The culture medium uses basal medium as the background medium and contains LIF growth factor, EGF growth factor, and FGF2 protein derived from the leopard-gill sea bass. The final concentration of FGF2 protein from the leopard-gill sea bass is 20-30 ng / mL, 30-45 ng / mL, 45-55 ng / mL, or 55-70 ng / mL. Passaging using this medium can construct a stable, rapidly dividing, and short-passaging immortalized marine fish muscle stem cell line, capable of stable passage for more than 50 generations. This provides raw materials for exploring the function and gene regulation mechanisms of myoblasts, and provides in vitro verification experimental conditions for further research on the effects of marine fish muscle stem cells on growth rate, laying the foundation for the breeding of superior marine fish species.

The application discloses a marine fish investigation trapping device and a use method, which comprises a trapping tank, the top end of the trapping tank is designed as an opening, a fixed net cover is fixedly arranged in the upper cavity opening of the trapping tank, a motor is fixedly arranged at the top center of the fixed net cover, a supporting mechanism is movably arranged on the lower bottom of the trapping tank, an automatic discharging mechanism is arranged in the inner wall between the lower bottom of the trapping tank and the inner cavity bottom, a plurality of inlet mechanisms are threadedly arranged on the outer wall of the trapping tank, a docking mechanism is arranged on the top end of the trapping tank, when the trapping tank is hoisted to the shore to prepare for discharging fish, a plurality of threaded installation holes are blocked by a ring-shaped blocking piece, so that the marine fish in the trapping tank cannot jump out and escape, and only the square discharging opening is allowed to discharge fish, and the ring-shaped blocking piece also pulls open the square blocking plate, so that the square discharging opening can be automatically opened, and the discharging of fish is automatically completed, and the application has the characteristics of convenient use.

The application discloses a fish rotten product processing method, and belongs to the technical field of aquatic product deep processing and food processing, and steps include: raw material pretreatment and preparation of composite puffing aid, chopping and emulsifying and micro-bubble introduction, low-temperature pre-gel forming, gradient microwave-hot air combined puffing, and rapid cooling. The application realizes pore uniformization by constructing a moderate cross-linking puffable weak gel network, introducing micro-bubble stabilizing technology, and replacing traditional oil frying with gradient microwave-hot air combined puffing, and prepares fish rotten products with uniform honeycomb porous structure, low oil content and excellent taste, and the parameter linkage control can be simultaneously applied to marine fish and freshwater fish raw materials. The application has novel process, remarkable synergistic effect, excellent product texture, and good industrial application prospect.

The application discloses a primer group, a kit and a method for rapidly identifying ingredients of red salmon, and belongs to the technical field of nucleic acid detection of marine fish meat products, and particularly relates to a method for rapidly identifying ingredients of red salmon by using LAMP isothermal amplification technology. The application provides a primer group and a matching kit for rapid nucleic acid detection, the primer group is composed of an outer primer pair, an inner primer pair and a single loop primer, and the kit contains the primer combination and an optimized LAMP reaction mixture. The detection method has the following remarkable features: only the DNA of a sample to be detected needs to be added into the pre-prepared LAMP reaction mixture, and the detection can be completed by using a common constant-temperature device, the whole process can be completed in about 60 minutes, the color development result can be observed by naked eyes to realize judgment, the reaction mixture is yellow, which is judged as positive, and the reaction mixture is red, which is judged as negative. The closed-tube detection design avoids the aerosol pollution risk caused by the opening operation. The method is excellent in specificity, detection sensitivity (the minimum detectable genomic DNA is 10 ‑1 ng or 1% mass fraction) and result reproducibility, and has the characteristics of simple operation and low cost, and is particularly suitable for limited resource scenes such as grass-roots units and on-site detection, can significantly reduce the supervision cost and improve the detection efficiency.

The application discloses a kind of over-ocean fishery safety early warning method, system and medium based on big data, by obtaining and analyzing the marine historical weather data of multiple marine fishing sub-regions and the marine environmental information of current region, obtain current warning information, determine the warning level of warning information, generate different navigation correction information for different warning levels, according to correction information, obtain suitable fishing route, thereby effectively improve fishing yield and economic efficiency of marine fishery.In addition, by analyzing the safe marine sub-region in the fishing area, a suitable return route is obtained, which can effectively reduce the economic loss caused by abnormal weather factors in marine production.

This application discloses a simulation method, system, device, and storage medium for fish community survey sampling. The method includes: acquiring hydrodynamic environmental data and historical ecological baseline data of fish in a target sea area; determining the adaptive grid topology and fish species migration response coefficients of each monitoring unit in the target sea area based on the hydrodynamic environmental data and the historical ecological baseline data of fish; identifying the core area of ​​fish resource aggregation; constructing a multi-species coupled dynamic model of fish; generating a temporal series of the spatial distribution of community structure for each monitoring unit; fusing and constructing a multi-dimensional state temporal series of the ecosystem; generating a species diversity thermodynamic field temporal series based on the multi-dimensional state temporal series of the ecosystem and a preset uncertainty quantification algorithm, and outputting a sampling station layout scheme that prioritizes coverage of highly heterogeneous areas of the fish community. This invention improves the accuracy and efficiency of marine fish community surveys through dynamic simulation and uncertainty analysis, and can support efficient sampling station optimization.

The invention discloses a fertilizer synergist based on marine biogen functional group modification and a preparation method and application thereof, and relates to the technical field of agricultural biotechnology and novel fertilizer additives, and the preparation method comprises the following steps: raw material pretreatment: taking marine algae, shellfish or marine fish processing leftovers as raw materials, cleaning, crushing to 60-100 meshes, and drying to obtain the fertilizer synergist; according to the method, marine biogen is taken as a raw material to obtain marine biogen coarse powder, active functional groups such as sulfonic groups and carboxyl groups are successfully introduced to a molecular skeleton of the marine biogen through alkaline hydrolysis and a specific functional group directional modification process, and a final product has high cation exchange capacity and pH buffer characteristics based on Hexchange and neutralization reaction through ion exchange treatment; the synergist can adsorb and preserve nutrient ions, and after the synergist is applied to soil, through interaction of functional groups of the synergist and ions of a rhizosphere environment, the pH of a micro-domain can be easily adjusted to be neutral, so that favorable conditions are created for effective utilization of nutrients, and meanwhile resource utilization of marine processing leftovers is achieved.

The application provides a wool collagen antibacterial fabric and a preparation method, and belongs to the field of functional textile materials and manufacturing process textile technology. The shrink-resistant wool yarn and collagen yarn are used as raw materials, and the collagen yarn is composed of marine fish collagen viscose and cotton fibers. The wool yarn is prepared through the following processes: wool yarn: strip dyeing, rewashing, wool splicing, secondary combing, fore-spinning, spinning, self-winding, doubling, doubling, steaming. The collagen yarn is prepared through the following processes: loose bobbin, dyeing, drying, and reversing the bobbin. Weaving: warping, harnessing, weaving, inspection, and repair. Post-finishing: singeing and dust collection, continuous cooking, drying, tank steaming, finishing, washing, separation, lining cooking, drying, intermediate inspection, finishing, brushing, calendering, tank steaming, and finished product. The advantages of wool and collagen fibers are successfully combined, and through process innovation, a multifunctional fabric with antibacterial, moisturizing, comfortable and high-end texture is created, solving the problems of single function and difficult processing in the prior art.

This invention belongs to the field of formulated feed technology for marine fish, specifically relating to a feed for improving the muscle quality of *Hexagrammos oysterfish* and its preparation method. The feed for improving the muscle quality of *Hexagrammos oysterfish* is made from the following raw materials in the indicated weight percentages: 93.5%–96.5% basic ingredients, 1% compound vitamins, 1% compound mineral salts, and 1.5%–4.5% formulated feed composition, with the sum of the weight percentages of all raw materials being 100%. The formulated feed composition consists of yeast β-glucan, chitosan oligosaccharide, and coated sodium butyrate, with the mass ratio of yeast β-glucan, chitosan oligosaccharide, and coated sodium butyrate being 1–3:1–3:1–2. This invention not only effectively reduces fat deposition in the body of *Hexagrammos oysterfish*, improving its muscle elasticity and chewiness, but also significantly improves the textural properties of the fish meat, thereby enhancing the overall muscle quality of *Hexagrammos oysterfish* and meeting consumer preferences.

This utility model discloses a device for measuring the growth indicators of marine fish, specifically a base plate, and further includes: two sets of weighing components for measuring the weight of marine fish; an adjusting component for adjusting the distance between the two sets of weighing components, and the adjusting component is located on the top of the base plate; and a fixing component for fixing the marine fish, and the fixing component is located on the weighing components. The adjusting component includes side plates, which are fixedly installed on both sides of the top of the base plate. A screw is rotatably connected between the two sets of side plates via bearings, and the thread directions at both ends of the screw are opposite from the middle. Both ends of the screw are threadedly connected to sliders. This utility model, by setting a fixing component on the weighing components, enables the fixing of marine fish during the measurement of their growth indicators, thereby improving the accuracy of weighing the marine fish.