18 results about "Coldwater fish" patented technology

The present invention relates to the use of alpha lipoic acid as feed additive for aquatic animals including fish and shrimp, especially for cold water fish as for example salmon, bream, bass and for warm water fish as for example carp, tilapia, catfish. More particular, this invention relates to the use of alpha lipoic acid for the improvement of the feed conversion ratio and / or daily weight gain in fish, for reducing mortality by regulating the micro flora of the gut and / or by protecting the animal against infections caused by pathogenic viruses.

The invention relates to the technical field of aquaculture and feed engineering, and discloses a bionic fish digestion simulation system based on heat pump temperature control and software driving, which comprises an environment simulation subsystem, a bionic stomach digestion subsystem, a bionic pylorus subsystem, a bionic intestinal tract subsystem and an intelligent control and detection subsystem. The whole bionic digestive organ is immersed in an extremely stable water body environment, and accurate and stable control of the water temperature of + / -0.1 DEG C of the experimental water tank is realized. The problems that a traditional method is poor in temperature uniformity and large in fluctuation are fundamentally solved, the body temperature requirements of various fishes such as cold water fishes and warm water fishes can be accurately met, a reliable temperature basis is provided for digestive enzyme activity simulation, and the scientificity and repeatability of experimental data are remarkably improved.

The application discloses a cold water fish fermentation product obtained through synergistic fermentation of a microbial composition and a preparation method thereof, and belongs to the field of microbial fermentation food. The application comprises the following steps: compounding Lactobacillus plantarum, Lactobacillus sakei and Saccharomyces cerevisiae into a microbial composition, preparing a pickling liquid from the complex microbial liquid of the three kinds of microorganisms, taking the dorsal muscle of a cold water fish as raw material, and performing pickling and drying fermentation treatment to obtain the cold water fish fermentation product. Experimental results show that inoculation of the microbial composition provided by the application can quickly produce acid to form a low pH environment, efficiently regulate protein hydrolysis, significantly shorten the fermentation period, inhibit lipid oxidation and reduce the TBARS value. The application provides a new microbial composition and fermentation method for low-salt, efficient and safe fermentation of cold water fish, and lays a foundation for improving the fermentation flavor of the cold water fish fermentation product, stabilizing the product quality and improving the product edible safety.

The utility model relates to the technical field of fish collecting equipment, in particular to a cold water fish collecting and temporary rearing device which comprises a barrel body and a sleeve, a barrel cover is installed on the top of the barrel body, second through holes are evenly formed in the outer wall of the sleeve, first through holes are evenly formed in the outer wall of the barrel body, and the first through holes correspond to the second through holes. A sleeve is arranged in the barrel body, a positioning block is arranged on the sleeve, a push rod is arranged on the positioning block, strip-shaped holes are formed in the two ends of the barrel body, and push rods are arranged on the inner walls of the strip-shaped holes. The upper portion is provided with a special hole for water communication, the lower portion can store water, the inner wall is smooth and free of burrs and does not injure fishes, several holes are drilled in the barrel body, water inside and outside can circulate, the fishes can be directly lifted out during transportation, water is left at the bottom of the barrel, the fishes can be prevented from dying immediately after being short of water, the structure is simple, and operation is convenient and fast.

The invention relates to the field of cold water fish hatching devices, and discloses a northern cold water fish demersal fertilized egg large-scale hatching device which comprises a hatching frame, a plurality of circular supports are fixedly installed on the lower portion of the hatching frame, a plurality of hatching bodies are fixedly arranged in the hatching frame, and each hatching body comprises a cylinder part and a cone part which are communicated with each other. A first movable baffle and a second fixed baffle are fixedly installed at the top end and the bottom end of the cylinder part of each hatching body respectively, the bottom end of the conical part of each hatching body is communicated with an oxygen pipe, the other end of each oxygen pipe is communicated with one end of an oxygen bottle, and a medicine feeding pipe is arranged in each oxygen pipe. One end of each drug feeding pipe extends into the conical part of the hatching body, and the other end of each drug feeding pipe penetrates through the side wall of the corresponding oxygen pipe and extends to the outer side of the oxygen pipe to be fixedly communicated with one end of a 500 mol pressurizing injector. Meanwhile, the device is also suitable for cold water fish hatching in a non-freezing period, has the characteristics of simplicity, low cost, detachability, low condition requirements and the like, is convenient to carry and is suitable for field operation.

The present invention relates to a functional feed and an oral delivery system for delivery of bioactive macromolecules. The oral delivery system comprises ethylenediammonium alginate which is a vehicle for delivery of macromolecular drugs. The oral delivery system according to the present invention is particularly suitable for use in combination with functional feeds in fish.

The invention belongs to the field of aquaculture and marine resource development, and relates to a marine cold water fish culture device capable of changing a water changing mode and a use method thereof. The device comprises a buoyancy box frame, a breeding deck and a water supply system, a barrel surrounding water body and a net surrounding water body are arranged below the breeding deck, the upper end of the net surrounding water body is connected with the breeding deck, and the lower end of the net surrounding water body is connected with the barrel surrounding water body; a culture water body fixing frame is further installed on the culture deck, a lifting machine is arranged on the culture water body fixing frame, and the lifting machine controls winding and unwinding of the lifting rope so as to achieve lifting of the barrel surrounding water body. According to the novel mariculture cold water fish device provided by the invention, the construction and culture cost of salmon and trout mariculture facilities can be greatly reduced, the market competitiveness of marine salmon and trout culture products in China is improved, and the construction of marine granaries in China is accelerated and promoted. The device can be widely applied to cold water fish culture in sea areas with obvious thermal stratification in China, Japan, Korea, Turkey and other countries in summer.

The invention relates to the technical field of aquaculture, in particular to an efficient and low-consumption cold water shrimp fry and fingerling breeding method. The method comprises the following steps: laying microcapsules for packaging paraffin phase-change materials at the bottom of a breeding pool, injecting underground water in a pulse manner through an annular water distribution pipeline, monitoring the water temperature in real time by using a wireless temperature sensor, and regulating and controlling the water temperature in combination with intelligent temperature control logic. According to the invention, temperature fluctuation is buffered bidirectionally through heat absorption and heat release of the phase-change material, and an underground water pulse injection technology is combined, so that the problems of high embryo death rate and over-high energy consumption caused by temperature fluctuation and embryo displacement damage caused by water flow disturbance in the prior art are solved, and the embryo death rate and energy consumption are remarkably reduced; the device is suitable for hatching cold water fries such as rainbow trout and cold water shrimps, and has the advantages of high stability, good economical efficiency and strong ecological property.

This invention discloses a reconstituted crispy chip made from cold-water fish with a hydrophobic coating and its preparation method, belonging to the field of food processing technology. The method uses pikeperch and soy protein as raw materials, which undergo pretreatment, low-temperature chopping, addition of auxiliary materials, thinning, and drying to obtain the crispy chip base. Camellia oil ethanol solution is used as the hydrophobic coating, which is sprayed and dried at low temperature to form an edible hydrophobic film on the surface of the crispy chip. The resulting crispy chip has a water contact angle greater than 90°, exhibiting a significant hydrophobic effect, effectively delaying moisture absorption and softening, maintaining a crispy texture, and extending shelf life. This invention features a simple process, is safe and edible, and is suitable for industrial production, providing a new approach for the deep processing of pikeperch and the development of high-protein hydrophobic snack foods.

The invention provides a method for extracting collagen from cold water fish byproducts, and relates to the technical field of food processing. The extraction method provided by the invention comprises the following steps: sequentially carrying out pretreatment, deep eutectic solvent synergistic ultrasonic extraction treatment, directional controllable subcritical water technology extraction treatment, separation and drying on cold water fish byproducts to obtain collagen, and further preparing collagen peptide from part of collagen. According to the method disclosed by the invention, the acid-soluble collagen is efficiently extracted at low temperature under the assistance of ultrasonic waves by virtue of the deep-eutectic solvent, and then the collagen which is not dissolved out by the deep-eutectic solvent and is tightly crosslinked in the skin residues is directionally hydrolyzed by virtue of the subcritical water, so that graded accurate extraction is realized, and the total extraction rate is increased to 90% or above; meanwhile, through two-step sequential extraction, nearly complete utilization of the raw materials is realized in the whole process, and a series of products from complete collagen to collagen peptide can be obtained through parameter regulation and control, so that the additional value and comprehensive utilization efficiency of cold water fish processing byproducts are remarkably improved.

The invention discloses a 3D printing hydrogel stent for treating bone defect and a preparation method thereof, fish gelatin and fishbone powder are extracted from cold water fish, the fish gelatin and the fishbone powder are mixed as bio-ink, and vascular endothelial growth factors are loaded in the bio-ink to prepare the 3D printing hydrogel stent for treating bone defect. Preparing a methacrylated fish gelatin scaffold doped with fishbone powder by adopting a 3D printing technology; the preparation method comprises the following steps: preparing methylacryloylated fish gelatin with BMP2 and alginic acid microspheres by adopting a micro-fluidic technology; after the microspheres are assembled into the fishbone powder mixed hydrogel stent, methacrylic acid groups on the surfaces of the microspheres and in the stent are polymerized and crosslinked under the action of a light curing agent through ultraviolet irradiation, so that the microspheres and the frame are fixed to form the composite stent. The problem of balance among porosity, mechanical stability and active ingredient retention of the stent is solved, and a personalized and multifunctional repair scheme is provided for complex bone defects.

The invention discloses a functional nutrition bag for improving cold water fish meat quality and a culture method, and belongs to the technical field of aquaculture. The functional nutrition bag comprises the following raw materials in percentage by weight: 25%-50% of schizochytrium limacinum powder, 10%-40% of chlorella powder, 0%-40% of linseed oil and 0%-15% of an amino acid compound. According to the breeding method, the functional nutrition bag and commercially available feed are matched for feeding in the'window period 'before the cold water fishes appear on the market. The innovative functional nutrition bag is combined with a special method, the content of DHA and total n-3 polyunsaturated fatty acid in cold water fish muscles can be remarkably increased, meanwhile, the muscle color and texture characteristics are optimized, a cold water fish product with high quality and high additional value is finally obtained, and synergistic improvement of flavor substances and nutritional quality is achieved. In addition, the non-whole-course feeding mode avoids the cost pressure of whole-course addition of nutrition bags, the economical efficiency is excellent, and market popularization is facilitated.

The invention discloses a cold water fish breeding and hatching device, and relates to the technical field of cold water fish breeding and hatching devices, the cold water fish breeding and hatching device comprises a hatching pond, and two drainage holes are formed in the bottom of the hatching pond. During use, two drainage holes are plugged through a first plugging plate and a second plugging plate, then a motor is started, a plurality of flushing heads move back and forth through output of the motor, meanwhile, a separation net moves through output of the motor, and then water is added through a first connecting pipe and a second connecting pipe; when the fish eggs are separated, the fish eggs move in the direction opposite to the separation net, at the moment, the fish eggs pass through the separation net, hatched fishes cannot pass through, then a first lifting plate or a second lifting plate is reset, at the moment, a first plugging plate or a second plugging plate cancels plugging of water drainage holes, and then the separated fishes are discharged through the water drainage holes; therefore, the hatched fish and the roe can be conveniently separated, the influence of the first hatched fish on the unhatched roe is reduced, and the device is convenient to use.

The application discloses a cold water fish shelf life intelligent monitoring method and system, relates to the technical field of computer vision and food quality intelligent monitoring, and comprises the following steps: acquiring the fish species identification, storage time sequence, continuous temperature record, hydrogel intelligent label image and freshness detection data of the current batch of cold water fish; processing the freshness detection field availability, temperature trajectory, shooting environment state and label color response respectively; and generating index missing types, index effective weights, detection corruption amounts, storage cumulative lengths, temperature trajectory corruption amounts and stable color response amounts; and inputting the above-mentioned multiple-source corruption representations into a shelf life dynamic prediction model to dynamically output residual shelf life prediction values and prediction confidence levels.

Alpha lipoic acid is employed as a feed additive for aquatic animals including fish and shrimp, especially for cold water fish as for example salmon, bream, bass and for warm water fish as for example carp, tilapia, catfish. More particular, alpha lipoic acid is disclosed herein for the improvement of the feed conversion ratio and / or daily weight gain in fish, for reducing mortality by regulating the micro flora of the gut and / or by protecting the animal against infections caused by pathogenic viruses.