5480 results about "Fishery" patented technology

Provided herein are systems and methods for producing eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and/or derivatives and/or mixtures thereof by growing algae that produce the oils containing EPA and/or DHA and/or derivatives and/or mixtures thereof, harvesting the algae with fish in one or more enclosed systems, and then processing fish to separate and purify the EPA and/or DHA. The multi-trophic systems provided herein comprise at least one enclosure that contains the algae and the fishes, and means for controllably feeding the algae to the fishes. Also provided herein are the lipid compositions extracted from the fishes.

An additive for fowl's feed is prepared from more Chinese-medicinal materials, and can serve to improve immunity, promote appetite and absorption, and relieve inflammation. Its advantages are high effect and low cost.

A method and a device for automatically detecting and signaling the presence of prey caught in a trap. The trap has inlet ports equipped with a one-way inlet mechanism such that once a rodent has passed a central point the rodent is contained within the trap. After the rodent has passed the central point, the trap is reset to the start position in order to attract additional prey. The trap is provided with a device for signaling the presence of vermin in the trap. The mechanism may be operable via a push button operated by movement of the vermin. Alternatively, means for detecting the rodent may include the use of vertical or horizontally elongated elements that are actuated by the movement of the vermin. A further embodiment includes a photocell, or a sensor, to indicate the presence of rodents. The mechanism for signaling may include lights or sound devices that can be secured to the trap or remotely activated via wired or wireless means. The signaling device can be time delayed such that additional vermin can enter the trap before intervention by the operator and is also capable of monitoring several traps concurrently.

The present invention relates to a netpen for breeding, storage, or transport of fish in the sea, in particular completely or in part in open sea regions outside the skerries, wherein the netpen may be lowered in the sea to a desired depth when needed, wherein the netpen may be elevated to a half or approximately half submerged state for various work operations, such as maintenance and inspection of the netpen or harvesting, and wherein netpen has a substantially spherical geometry. The invention is characterized in that the netpen consists of a framework of stays (1, 2, 3, 4) mainly comprising polyethylene or polyethylene-like materials, such as PolyEthylene Low Density (PELD) or PolyEthylene High Density (PEHD), preferably PEHD, a horizontal through center pole (5) also serving as a buoyancy adjusting element for elevation and lowering of the netpen, a horseshoe-shaped working platform (6) having an integrated dock (7) for working vessels, the entire working platform including dock being liftable and lowerable through buoyancy adjustment by means of a designated element (13), and the working deck being mounted on an extended axle (15) on the center pole in such a manner that the netpen may be rotated inside said working deck. On said axle, through lines (8), there are also attached buoys (10) that gives the netpen sufficient reserve buoyancy in normal position as well as weighting organs (9) that, when the netpen is to be stabilized fully submerged at a desired depth, is landed on the sea floor; alternatively, the netpen is stabilized at the desired depth due to the reserve buoyancy in the floatation unit (30) and the floatation element (23), as shown in FIG. 30. Life-supporting functions, such as fodder, energy, and air, are being supplied to the netpen through a lifeline from a nearby floatation unit (30), preferably a platform being an integrated part of the anchoring for the netpen.

The present invention relates to a method of tackling sea red tides and fresh water bloom using clay as algae flocculant. The effective component of the flocculant is hydrated magnesio-silicate salt in the laminated structure including upper and lower silicon-oxygen tetrahedron layers and sandwiched magnesium-oxygen octahedron layer. The hydrated magnesio-silicate salt is easy to prepare, low in cost and high in algae flocculating elimination effect.

The invention discloses step-type fish passage facilities suitable for the steep slope of a high dam and a control method, and relates to intersection fields of aquatic engineering and hydraulic engineering, in particular to a fishway building suitable for the steep slope of the high dam and a fish passage control method. The fishway in the invention is a step-type fishway building established onthe steep slope of the dam body, which is combined by step-type relays of a plurality of rectangular pools, and also comprises a fish passage monitoring system, a computer automatic control system, anoverflow water fish luring device in the fishway and a fish luring device of inlet and outlet of the fishway. The invention can lead the migratory fish to pass the dam timely without injure of the migratory fish and has the outstanding features of low physical ability consumption, no inverse effects on gonadal development, high automatic degree, relative shorter fishway (steep slope) and saving investment and the like, thus fundamentally changing the defect that other structural types of fishway pass through the high dam.

The invention provides a compound Chinese herbal medicine immunopotentiator for fish, containing by weight of: 40-50% of astragalus, 10-20% of angelica, 15-20% of glycyrrhiza, 5-10% of hawthorn, 5-12% of honeysuckle and 5-12% of isatis. Advantages of the invention is that: (1) the immunopotentiator of the invention has no adverse effect on palatability of feedstuff, (2) body immunity of culture fishes can be substantially enhanced, and immunoprotection rate to fresh water aquiculture fishes and marine culture fishes reaches to 65-71%, and (3) growth of pathogenic bacteria like escherichia coli in intestinal tract of culture fishes can be substantially restrained, growth of fish can be promoted rapidly, and weighting rate and disease resistance of culture fishes can be raised. The immunopotentiator is suitable for various of culture fishes, has a broad future, and is easy for industrialization.

The invention discloses a fish tenderness hyperspectral detection method based on a characteristic wave band. The detection method comprises the following steps of: firstly, detecting fish tenderness according to the conventional detection method; then, with fish as a sample set, utilizing a near-infrared hyperspectral imager to carry out nondestructive detection on the fish, establishing a multi-element linear regression model of the tenderness and a characteristic wavelength, detecting a fish sample, and calculating the tenderness of fish sample according to the multi-element linear regression model of the tenderness and the characteristic wavelength. The fish tenderness hyperspectral detection method provided by the invention has the advantages that the fish tenderness is rapidly detected in an optimized manner through the characteristic wave band, the time of hyperspectral collection, detection and data analysis is greatly shortened, the detection efficiency is improved, and the fish tenderness hyperspectral detection method really provides theoretical support and research basis for on-line, rapid and nondestructive detection of food quality.

The invention discloses a set of apparatus and a method for culturing Haematococcus pluvialis and converting astaxanthin in large scale. The apparatus consists of a photo-bioreactor system set on the frisket, aeration equipment, culture fluid inoculation equipment and still cell harvesting equipment. Floating or sunken pulse equipment is set on the frisket. The apparatus don't need establishment of artificial culture pool and other institution, but uses natural water body to culture Haematococcus pluvialis in large scale. It is low cost, the culture temperature, illumination and water flow rate is stable, culture fluid flows with each other, aeration is continuous, culture conditions are precedent, which make the growth and increment of Haematococcus pluvialis almost at equal pace. The growth rate of Haematococcus pluvialis can reach to 25%, biomass increase is fast, doubles 3-5 days. The photo-bioreactor can be hoisted into required depth of the water, which solves the contradiction of difference of temperature, illumination and nutrition of Haematococcus pluvialis culture and astaxanthin conversion.

The invention provides a spectacular fish feed capable of realizing the color-enhancing and brightening of spectacular fish. A plurality of natural environmentally-friendly raw materials are adopted. The feed can ensure the rapid color-enhancing and brightening of the spectacular fish, preserve colors for long and achieve the remarkable effects of not dyeing and polluting a bowl for long on the basis of providing essential nutrients required by normal physiological metabolism and growing development for the spectacular fish.

A loach fish fry artificial cultivation method is characterized by comprising spawning and hatching process, 7-day (d) fish fries cultivation and 15 d fish fries cultivation, wherein the spawning and hatching process comprises the following steps: parent fish rearing and selecting; artificial induction; fertilization process; and fertilized egg hatching process. A loach fish fry reinforced cultivation method comprises the following steps: adopting indoor flat surface slot to cultivate the 7 d fish fries and the 15 d fish fries, reinforced culturing fish fries, stocking loach fish fries to a pond after the 7 d fish loach fish fries and the 15 d fish fries grow up, and thereby greatly improving fish fry indoor cultivating survival rate and fish dries pond descending survival rate. A result of an experimental research shows that: the indoor cultivating survival rate of the 7 d fish fries reaches up to 87.8 percents, the pond descending survival rate reaches up to more than 30 percents, the 15 d fish fries reaches up to 92.6 percents, and the pond descending survival rate reaches up to more than 50 percents. The loach fish fry artificial cultivation method is scientific and rational, easy to implement, and good in practicability. By using loach fish fry artificial cultivation method, the fish dries pond descending survival rate can be greatly improved, and good economic benefit can be obtained.

An artificial reproduction method for schizothorax includes choosing parents fish, culturing, fertilization, incubation and culturing fry.

The invention provides an alga/fish mixed type three-dimensional ecological fish shelter and a feeding method of the fish shelter, wherein the fish shelter comprises an anchoring system, a fish shelter top consisting of a floating ball and a fixed frame, a fish shelter middle layer consisting of a horizontal grid and a fixed frame suspended with a middle spherical fish shelter, and a fish shelterbottom consisting of a horizontal grid and a fixed frame suspended with a bottom spherical fish shelter; and the fish shelter middle layer is respectively connected with the fish shelter top and the fish shelter bottom by a connecting rope and the lengthways crossed grid. The feeding method comprises the following steps of: shipping to a feeding sea area, firstly throwing a first anchor along with the direction of incident flow, sequentially throwing a second anchor by means of fair current, tying an anchor tail rope and a mark float at the back end of the anchor, dragging the anchor tail rope by means of fair current, tensioning a whole system, and completing feeding. According to the invention, the fish shelter can be used for culturing and proliferating the alga with different water depths, is taken as a perching and refuge occasion of the small size medium-upper layer fish and a large size medium-upper layer juvenile fish, and is simple in structure, and convenient to assemble andrecover, so that the novel artificial fish shelter can be provided for building an ecological marine ranch.

Robots for autonomous harvesting of hydroponically grown organic matter with different harvesters are disclosed. The autonomous harvesting involves using one or more robots to (1) navigate a hydroponics arrangement or environment to arrive at locations of harvestable organic matter, (2) identify mature organic matter for harvesting from under-ripe or over-ripe organic matter using the robot's sensors, (3) identify the irregular positions and the irregular extraction points at which the mature organic matter is to be correctly harvested using the robot's sensors, (4) harvest the organic matter at the identified positions using the robot harvester, and (5) place the extracted organic matter into a storage bay for delivery to a packaging or shipment station. The harvester includes one or more of a vacuum, gripper, cutting saw, or clipping shears disposed about a distal end of an extendable or mechanical arm mounted atop a lift.

The invention discloses an antibacterial anti-alga color master batch dedicated to a fishing net and a preparation method thereof. The color master batch disclosed by the invention comprises the following raw materials in weight part: 35-75 parts of carrier resin, 10-48 parts of pigment, 10-20 parts of antibacterial agent, and 0.5-3 parts of compatilizer. The preparation method for the color master batch, disclosed by the invention, is realized through the following steps: adding the pigment, the antibacterial agent and a processing agent into a grinding miller as per the raw material ratio for grinding and refining, adding the carrier resin and the compatilizer together into a high-speed mixer for uniform mixing, and finally adding the mixed material into a double-screw extruder for mixing and extruding. According to the invention, the antibacterial agent is added into the color master batch dedicated to the fishing net, and the compatilizer is added to enhance the compatibility of the prescription components, so that the antibacterial anti-alga color master batch dedicated to the fishing net can be prepared; and moreover, the color master batch has antibacterial and anti-alga functions, is convenient to add and use, and has the advantages of low toxicity, high efficiency and long antifouling period.

The invention provides an aquatic product feed additive composition, a preparation method and application thereof. The composition comprises the following raw materials in parts by weight: 30-45 parts of plant extract and 5-10 parts of montmorillonite, wherein the plant extract is prepared from the bulk pharmaceutical chemicals in parts by weight: 6-18 parts of wormwood, 6-18 parts of mintkit, 6-18 parts of astragalus root, 5-15 parts of white paeony root and 5-15 parts of fleece-flower root. The additive composition has the advantages of being good in palatability, enhancing animal appetite,improving fish intestinal tract functions, maintaining long-term health of fish alimentary canals, promoting digestive absorption of fishes, increasing fish organism immunocompetence, and strengthening health and stress resistance capacity; and after excrement enters a water body, water quality can be continuously improved, and problem of water degradation is relieved.

An air lift optical bioreactor of the alga is made up of cultural tank, water treatment, light equipment, gas-supply equipment. The bioreactor has the simple structure and is easy to manipulate. Also we can get the culture the alga the whole day.

The invention discloses a system and a method for wirelessly monitoring the water drinking behavior of sows raised in a group based on a machine vision technology. The system comprises a plurality of pieces of water drinking place equipment, gateway nodes and a central server, wherein each water drinking place equipment is arranged at a water drinking place in each sow house to be monitored, used for sensing approaching of the sows and triggering each processor to record water drinking time and flow, and wirelessly connected with the central server through the gateway nodes by using a network. The water drinking behavior is an important basis for judging whether the sows are healthy. The system can accurately monitor the daily water drinking frequency of the sows and the daily total consumption of water resources by using an automatic technology, and can automatically send the serial number of a sow individual which abnormally consumes water to a feeder, so that the sow can be timely concerned, the growth and reproduction of the sows are slightly influenced by diseases, and the economic benefit of sow raising is effectively improved.

The invention discloses health-care fodder for freshwater fish. The health-care fodder is mainly prepared by raw materials in percentage by weight as follows: 14%-35% of soybean meal, 1%-5% of fish meal, 15%-45% of miscellaneous meal, 5%-10% of corn distiller dried grains with solubles, 20%-35% of wheat meal, 2%-5% of fish oil and 1.0%-1.4% of a health-care additive, wherein the health-care additive is a mixture of vitamin, mineral, immunity polyhexose, probiotics and a complex enzyme preparation agent. According to nutritional requirements of freshwater fish, plant protein is taken as a main protein source, and the biological value of fodder protein is increased by adjusting balance of amino acid; and simultaneously, the immunity polyhexose, the probiotics, the complex enzyme preparation agent and the like are added, so that the utilization rate of the fodder is increased, antinutritional factors are passivated, enteric microflorae of the freshwater fish are adjusted, the immunity of the freshwater fish is enhanced, contents of hazardous substances in excrement are reduced, water pollution caused by the excrement and undigested fodder in the excrement is reduced, the freshwater fish can healthily grow, and economic benefits for culturing the freshwater fish are increased.

The invention relates to a method for processing collagen peptides by using fish leftovers, belonging to the technical fields of aquatic product processing and comprehensive utilization of aquatic product leftovers. In the method, the fish leftovers such as fishskins, scales and fish viscera are used as raw materials for carrying out high-valued development utilization. The method specially comprises the following steps: firstly respectively treating and mixing the raw materials so as to obtain a fish leftover mixture; and then promoting step-by-step enzymolysis with ultrasonic wave, killing enzyme, centrifugalizing, decoloring, filtrating, carrying out reinforcing membrane separation with ultrasonic wave and nano filtrating and freeze drying so as to obtain collagen peptides with different molecular weights. According to the invention, the enzymolysis and membrane separation processes are promoted through ultrasonic wave, enzyme adding amount is less, enzymolysis time is short, production efficiency is high, and the obtained products with different molecular weights has no odor, is light in color, and can be used in industries such as medicaments, health products, food and the like.

The invention relates to a high-density fish culturing method. The high-density fish culturing method includes the steps of 1), throwing fish fries in a fishpond; 2), sealing the fishpond; 3), regulating water flow; 4), feeding feed; 5), draining water and sewage; 6), fishing. According to the step 2) of fishpond sealing, sealing cover seats are arranged on the inner wall of the fishpond, a sealing cover of an arched structure is arranged on the sealing cover seats, a vent valve is arranged at the top of the sealing cover, and an oxygenation pipe is arranged in the fishpond; after the vent valve is opened, water is injected into the fishpond until the water level exceeds the sealing cover seats, and then the vent valve is closed; oxygen is fed into the fishpond, and a sealed pure-oxygen space is formed between the water surface and the position below the arched sealing cover by undissolved oxygen. The high-density fish culturing method solves the problems of difficulty in further improvement on culturing density, oxygenation equipment complexity, high energy consumption, low pure oxygen utilization ratio and inconvenience in culturing and operation in existing industrial fish culturing.

The invention relates to a compound aquatic product feeding promoting agent used in feed for fish, shrimp and crabs, and belongs to a feed additive. The feeding promoting agent is characterized in that: the feeding promoting agent comprises the following compositions: 25 to 35 portions of dimethyl-beta-propionic acid thetine, 15 to 25 portions of taurine, 15 to 25 portions of alanine, 5 to 15 portions of glycin, 5 to 15 portions of glutamic acid and 5 to 15 portions of nucleotide; and the taurine, the alanine, the glycin, the glutamic acid and the nucleotide are crushed, sieved by a 40-mesh sieve, put into a mixer and added with the dimethyl-beta-propionic acid thetine for even mixing to prepare the compound aquatic product feeding promoting agent. The compound aquatic product feeding promoting agent can improve the food intake of aquatic animals, promote quick growth of the aquatic animals, improve the bait efficiency of the aquatic animals, reduce residual bait to a large extent, greatly reduce pollution to water body and contribute to environmental protection.

A solid culture method for antrodia camphora includes culturing mycelia with space bags and cultivating sporophores in air. The cultured product and its usage are also disclosed.

A towrope retriever system for a watercraft for simplifying and improving the safety of the towrope handling, storage, reeling out, and reeling in of a towrope, in which the towrope retriever is connected to or integrated into a support unit such as a tower or pylon securely attached to the watercraft, substantially increasing the overall height of the watercraft, and allowing the performer to jump higher and perform more challenging aerial maneuvers, is disclosed. The towrope retriever may be rotatable to allow the performer a greater flexibility of movement and may be easily removed for storage.

The invention discloses plasma microbial mutagenic breeding equipment, and belongs to the field of normal pressure plasma technology processing equipment. The plasma microbial mutagenic breeding equipment comprises a shell and a plasma generator arranged in the shell and used for processing samples; an operating room is formed on the left in the shell; a carrying platform for accommodating the samples is arranged in the operating room; a nozzle is connected with the plasma generator; a temperature sensor and a position sensor are fixed on the inner wall of the operating room; breeding samples are put on the carrying platform; and on the right in the shell, the plasma generator, a radio frequency power supply and a controller are arranged outside the operating room. A plasma jet generated by the plasma generator under the conditions of atmosphere and low voltage performs mutagenic breeding on biological samples, the uniformity is high, the temperature is low, and a phenomenon that a large number of biological samples are dead due to overhigh temperature of the jet is avoided; and the equipment has complete functions, is easy to operate, and has a good application prospect in the field of biotechnology.

An aquatic toy that is a biomimetic fish with a watertight body portion. The body portion contains a battery electrically connected via a controller to at least one coil. The coil is positioned relative to a magnet and the coil can be caused to oscillate by virtue of a controller defined alternating current passing through the coil. The oscillation of the coil causes movement of a tail fin that is engaged to said watertight body to cause the fish to move forward through a body of water.

The embodiment of the invention provides a facility grape early-maturing promoting culture method, and relates to the field of agricultural planting. Time to market of facility grapes can be 10 to 20 days earlier than time to market of conventional early-maturing promoting culture grapes, and economic benefits are increased. The method includes the steps that during the secondary expansion period of the facility grapes, 2 to 3 bud eyes are reserved on a mother branch in advance, and the mother branch serves as a main fruiting branch in a next year; the reserved 2 to 3 bud eyes grow into young sprouts under the normal management condition and reach the degree of lignification before artificial hibernation of the facility grapes, flower bud differentiation is ahead of time, and the facility grapes bloom and bear fruits in advance.

The invention provides a full-automatic fish descaling and cutting processor. The full-automatic fish descaling and cutting processor comprises a conveyor, a descaling device, a belly cutting device and a viscera removing device, wherein the conveyor is used for stably conveying fish downwards by means that a rotation shaft drives a conveyor belt; the descaling device is used for removing the scales at the both sides of the fish through high-speed rotation of two scraping rollers with brushes at the upper part of the conveyor; the cutting device is a sawtooth wheel rotating in a conveying process and can be used for cutting a fish maw; the viscera removing device is an extending prism body in the conveying process and rightly extends into the fish maw to remove fish viscera.

The invention relates to a bait feeding device. The bait feeding device comprises a bait containing piece, a supporting plate, gears, a hopper, a first motor, a control system and a first time controller. The bottom of the bait containing piece is open, and a plurality of partition plates for dividing the bait containing piece into a plurality of containing grooves are arranged inside the bait containing piece. Racks arranged in the length direction are arranged on the two sides of the bottom respectively. A sliding groove is formed by the racks and the bottom face of the bait containing piece. The bait containing piece is arranged on the supporting plate in a slideable mode through the sliding groove. The gears are erected at the bottom of the bait containing piece and meshed with the racks. An output shaft of the first motor is connected with the gears in a driving mode, and the bait containing piece is accordingly driven to move back and forth along the supporting plate. The bait feeding device is simple and reasonable in structure; the feeding time and the feeding amount can be adjusted in cooperation with the control system according to the sizes and the growth stages of fries, and timely and quantitative bait feeding can be achieved; a fish-feed-coefficient research device is simple in structure and low in cost, and baits can be timely and quantitatively fed, recycled and researched.

The invention discloses a feed additive capable of promoting the liver health of fish. The feed additive capable of promoting the liver health of fish is composed of the following constituents in total 100 percentage by mass: 15-20% of bile acid, 10-15% of tauric acid, 10-15% of beta-glucan, 8-12% of mannan oligosaccharide, 5-8% of L-carnitine, 6-10% of choline and the balance of fillers; the added amount of the feed additive capable of promoting the liver health of fish, disclosed by the invention, is 0.1-0.2% of the total mass of the feed; the feed additive is capable of reducing the accumulation of fat in the fish liver, improving the capacity of the fish liver for transferring fat, reducing the metabolism burdens of the liver, and improving the health conditions of fish bodies and promoting growth; during the use of the feed additive disclosed by the invention, the main formula of the feed does not need to be changed specially, thus reducing the labour and material costs during the production process of the feed; the raw materials of the feed additive disclosed by the invention are mainly prepared from animal tissues and beer yeast and are stable in source; therefore, the feed additive is natural, environment-friendly, safe and non-toxic.