17 results about "Saltwater fish" patented technology

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.

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 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 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 utility model relates to fish product processing technical field especially, it is a kind of sea fish product frying feeding device, it is thawed and is conveyed to frozen fish product by operation platform and first conveying device cooperation, fish product surface is dried by drying device, fish product after drying is conveyed by second conveying device, fish product surface is wrapped powder operation by powder supply device, and fish product surface excess flour is vibrated and removed by vibration device;Including operation platform;Still including first conveying device, drying device, second conveying device, powder supply device and vibration device, first conveying device, drying device, second conveying device, powder supply device and vibration device are all installed on operation platform;First conveying device and second conveying device are conveyed, drying device is dried, powder supply device is surface powder spraying, and vibration device is vibrated.

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.

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.

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.

The utility model discloses a kind of vacuum density meters for aquatic feed, it is related to aquatic extruded material production equipment technical field, including placing base. The upper surface of the placing base is equipped with extruded cylinder, and the end of extruded cylinder is equipped with servo motor one, and servo motor one output screw rod rotates. The vacuum density meter for aquatic feed, compared with the existing ordinary aquatic extruded material density control instrument, cutting tool and pressure chamber are designed as a whole by connecting cylinder, reduce intermediate connecting component, optimize internal structure by finite element analysis, select high-strength, corrosion-resistant alloy material, ensure stability and sealing under high-pressure environment, to produce % sink water material, ensure that equipment can be in seawater fish material and crayfish material production environment Long-term stable operation;Adopt high-precision laser cutting and numerical control bending technology to improve part accuracy and assembly stability, improve equipment surface protection ability through high-quality painting treatment, adapt to humid and strong corrosion environment.

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.

The utility model discloses a kind of baiting devices for seawater fish culture, including base, the first spiral conveying pipe is arranged on the top of base, and the automatic feeding assembly is arranged on the side of base;Automatic feeding assembly includes feeding chute, the inside bottom longitudinal sliding of feeding chute is provided with support plate, and the bottom of feeding chute is provided with weighing plate, the utility model: bait is conveyed to support plate by spiral conveying pipe, and the weight of bait on support plate will be pressed on weighing plate, when reaching threshold value, spiral conveying pipe stops conveying, and electric valve closes, to ensure the precision of baiting amount, pusher frame and push plate are pushed by electric push rod, and push plate is pushed by spring, to ensure that push plate is always in contact with support plate, so that bait on support plate is pushed into water, to complete automatic feeding, by cyclic operation, i.e. without working person manually feeding, it is more convenient to operate.

This invention discloses a perilla compound water-retaining agent and its application in deodorizing and retaining water in aquatic products, belonging to the field of food processing technology. The water-retaining agent uses perilla extract as its core component, combined with compound cyclodextrin and 3,4-dimethoxy-3,5,7-trihydroxyflavone. The compound cyclodextrin is prepared from citrate monoglyceride compound cyclodextrin. Through single-factor experiments combined with electronic nose-assisted analysis, the optimal application process was determined using the fishy smell value and color difference value of marine fish as optimization indicators. When applied to marine fish processing, the phenolic substances in the perilla extract can inhibit lipid and protein oxidation, the compound cyclodextrin can specifically encapsulate fishy smell substances, and 3,4-dimethoxy-3,5,7-trihydroxyflavone jointly enhances water retention performance, achieving effective deodorization, significantly reducing the content of trimethylamine and nonenal, improving color stability, and optimizing processing quality. It is suitable for various aquatic product processing scenarios.

The present application belongs to the technical field of compound feed for marine fish, and particularly relates to a feed for enhancing the immune activity of Hexagrammos otakii and a preparation method thereof. The feed is prepared from the following raw materials in mass percentage: base ingredients 93.5-96.5%, compound vitamins 1%, compound mineral salts 1%, and compound feed composition 1.5-4.5%, with the sum of the mass percentages of the raw materials being 100%; the immune activity composition is prepared from dried orange peel, betaine, and yucca extract, and the mass ratio of the dried orange peel, betaine, and yucca extract is 1-3:1-3:1-2. The feed for enhancing the immune activity of Hexagrammos otakii provided by the present application, through the synergistic effect of dried orange peel, betaine, and yucca extract, not only optimizes the digestion process of Hexagrammos otakii, but also comprehensively improves the health level and immune activity of Hexagrammos otakii from multiple aspects of antibiosis, immune enhancement, and anti-inflammation.

This invention provides a compound microecological preparation for enhancing the intestinal function of marine fish, its preparation method, and its application, belonging to the technical field of aquatic feed additives. The compound microecological preparation of this invention includes a carrier, traditional Chinese medicine extracts, and a compound bacterial flora; the traditional Chinese medicine extracts consist of seaweed extract, *Anemarrhena asphodeloides* extract, and *Eucommia ulmoides* leaf extract, with their total content accounting for 10-20% of the total weight of the compound microecological preparation; the compound bacterial flora consists of *Rhodopseudomonas palustris*, *Rhodotorula rubra*, and *Clostridium butyricum*, with a total viable count ≥15 billion CFU / g of the compound microecological preparation. This invention, through the scientific combination of traditional Chinese medicine extracts and the compound bacterial flora, effectively solves the intestinal health problems of marine fish, while simultaneously promoting growth and improving meat quality.

The utility model relates to the field of frozen cooking seawater fish and meat delivery, specifically speaking is a kind of frozen cooking seawater fish and meat delivery sorting device, including conveying belt body, the one side of conveying belt body is provided with bottom plate, the top of bottom plate is provided with sliding assembly and vibration component, the top fixedly connected with top plate of sliding assembly;The utility model is through the operation of conveying belt body, the frozen cooking seawater fish and meat removed from freezer is transmitted, and fish and meat are transmitted to the surface of taper lever, then through the taper setting of two taper levers, and oblique setting, so that fish and meat can slide on the surface of two taper levers, through the gradually increasing gap of one end of two taper levers to the other end, the sorting of fish and meat of different sizes is realized, and through the operation of low-speed servo motor, the vibration and sorting of fish and meat can be realized, effectively reduce the cost when routine maintenance, and improve sorting efficiency.

The application discloses an artificial compound feed for reducing nitrogen pollution of seawater fish culture water, which comprises an animal protein source and a feeding attractant, wherein the animal protein source is composed of fish meal and pork meal, the fish meal accounts for 60-80% of the mass of the animal protein source, and the pork meal accounts for 20-40% of the mass of the animal protein source; and the feeding attractant is fishy odor, and accounts for 0.5-2.0% of the total weight of the artificial compound feed. Compared with the artificial compound feed using fish meal as the animal protein source, the artificial compound feed not only has the same performance of maintaining normal growth of the cultured fish, but also reduces the feed cost, and more importantly, can significantly reduce the ammonia nitrogen and nitrite concentration in the cultured water, thereby providing an effective method for controlling nitrogen pollution from the feed source.