43 results about "Oyster farming" patented technology

The invention provides a substratum used in an artificial breeding and production process of crassostrea gigas and a manufacturing method of the substratum, and provides a method for cultivating the crassostrea gigas by using the substratum. The manufacturing method of the substratum comprises the following steps: cutting and bundling polypropylene packing straps; then wrapping the outer surface of the polypropylene packing straps with mixed cement paste; and air-drying the polypropylene packing straps to obtain the substratum. The mixed cement paste comprises the following components in percentages by mass: 0.5-1% of epoxy resin, 10-15% of fine sand, 15-20% of shell powder and the balance of cement; and the total mass percentage is 100%. The substratum is made of materials obtained easily, is low in cost and high in strength, and resists stretching and seawater corrosion. By the manufactured substratum, seedlings are collected easily, and the seedling attachment effect is good. Compared with frequently used chlamys farreri, the substratum is better in effect.

A method for raising the monomeric oyster in the shoal and shallow sea of northern sea region includes such steps as artificially culturing the larvae of oyster, sticking the larva onto shell, and throwing the shells into the seawater with 0.2-2.5m depth on the ebb.

The invention discloses a device and method for breeding monomeric oysters on a shallow sea shoal. Supporting frames which are made of concrete columns with the diameter ranging from 5.0 cm to 8.0 cm are arranged on the shallow sea shoal at first, and the number of the supporting frames is determined according to the breeding area; the net bags are filled with seed monomeric oysters with the length of 1-2 cm, net bag openings are sewn, and the net bags are placed on the cement column supporting frames in parallel; the seed putting amount per mu is 150,000-200,000, and the hole diameters of the net bags are changed regularly according to the sizes of the bred monomeric oysters. During the breeding period, attachments and the net bags on the flat supporting frames are removed regularly, and breeding is performed for 1.0 year to 1.5 years. According to the device and method for breeding the monomeric oysters on the shallow sea shoal, the monomeric oysters can be directly placed in the net bags and horizontally placed on the cement column supporting frames of the shallow sea shoal, some shoals which are not suitable for breeding the monomeric oysters can also be used for breeding, and therefore the breeding area and the breeding range of the monomeric oysters are enlarged and the shallow sea shoal utilization rate is improved. Meanwhile, the net bags are not damaged by the oysters and can be used repeatedly, cost is low, the loss is little, and the device and method for breeding the monomeric oysters on the shallow sea shoal are suitable for large-area breeding.

Disclosed herein are stackable cages for holding oysters, modular cages for holding oysters, floating platforms for deploying and retrieving oyster cages from a long line, and floats adapted to engage a plurality of oyster long lines and from which one or more oyster cages may depend.

The invention discloses an oyster farming method which comprises the following steps: a closed fish pond is established by the sea; the fish pond is provided with a second dike to divide the fish pond into an area A and an area B; the area B is arranged beside the sea; a first dike is arranged on the edge; a first water inlet is formed in the first dike; a first gate and a first filter net are arranged at the first water inlet; a second water inlet is formed in the second dike; a second gate and a second filter net are arranged at the second water inlet; and a water outlet and a third gate are also arranged in the area A. According to the farming method disclosed by the invention, two areas A and B are provided, the area A serving as a farming area, and the area B serving as a water purifying area; in water purification, an amino acid chelating agent realizes an effect of chelating heavy metals for sinking into the pond, and the content of free heavy metals in the water is reduced; and moreover, divided farming can remarkably reduce the heavy metal pollution of the water to provide a good farming environment for oyster farming.

An apparatus for farming oysters and, in particular, intertidal oysters. The apparatus includes a float, at least one oyster container configured to hold oysters and be carryable on the float, and a driver operable to periodically move each of the at least one oyster container between an underwater position and an above water position.

The invention belongs to the field of shellfish genetic breeding in the marine biotechnology, and particularly relates to a seed production method of an oyster high-temperature-resistant strain. Intertidal zone oysters with the shell height larger than 1.5 cm and without damage serve as parents of a core basic group, the parents are fattened in a subtidal zone sea area in a group self-propagationmanner and then bred to obtain a basic group, and then each generation of young oysters are repeatedly placed in an intertidal zone in summer to be subjected to temperature shock stress; and group breeding is carried out after fattening breeding is carried out in the subtidal zone sea area, and then the high-temperature-resistant strain with genetic stability is obtained. According to the method,the technical difficulties of poor nutritional basis, low egg laying amount, breeding difficulty and the like of the oysters in the intertidal zone are overcome, the phenotypic plasticity of the resistance traits of the oysters in the extreme environment of the intertidal zone is utilized in the seed production process, the breeding efficiency is improved, the breeding period is shortened, and thesurvival rate of the oysters in the high-temperature period in summer is remarkably increased. The invention provides a new way for cultivating a new high-temperature-resistant oyster variety, and can also provide a new improved variety for the oyster cultivation industry.

The invention relates to the field of aquatic product waste treatment, and discloses a factory-like prawn culture wastewater treatment method. The factory-like prawn culture wastewater treatment method comprises the following 11 steps of (1) constructing a wastewater treatment facility outdoors; (2) adding muddy silt of mudflat into workshop wastewater; (3) removing organic particles in the wastewater in an adsorption tank; (4) adding dissolved oxygen to the wastewater in a ventilation pool; (5) recycling sediments in a sediment recycling pool; (6) oxidatively decomposing the sediments in a sunning ground; (7) cultivating phytoplankton by utilizing nutritive salt contained in the wastewater in a biological purification pond; (8) arranging an oyster culture cage in the biological purification pond; (9) filtering and feeding the phytoplankton and suspended particles by oysters in the biological purification pond; (10) constructing an ecological food chain in the biological purification pond; and (11) conducting wastewater reutilization. By means of the factory-like prawn culture wastewater treatment method, the organic particles in water are successfully removed, the dissolved oxygen in water is increased, the nutritive salt in water is consumed, the pond food chain is constructed, purified water cyclic utilization is achieved, and remarkable environmental protection and economic benefits are achieved.

The invention discloses oyster aquaculture equipment. The oyster aquaculture equipment structurally comprises a lifting ring buckle, a connecting top plate, an oxygen-aeration moisture-proof backflow-proof control device, an oyster culture net, a folding indirect plate, a feed opening ring, an oyster fixation stone pillar, a moisture-proof leakage protection plate and a fixed bottom plate, whereinthe bottom end of the lifting ring buckle is connected with the upper surface of the connecting top plate in a welding manner, and the upper surface of the oxygen-aeration moisture-proof backflow-proof control device is connected with the lower surface of the connecting top plate in a welding manner. According to the oyster aquaculture equipment, the oxygen content of a pond is conveniently detected, the oyster aquaculture equipment is started for oxygen aeration, and it is avoided that as the oxygen content is insufficient, culturing of oysters is influenced; meanwhile, pressurizing is controlled, gas with the high oxygen content permeates into the inner side of the oyster fixation stone pillar to enter the pond, and it is avoided that oxygen-containing gas permeates into the pond and israpidly dispersed, and the oysters are influenced and cannot breathe and absorb oxygen to be difficult to survive.

Disclosed herein is an apparatus for farming oysters and, in particular, intertidal oysters. The apparatus comprises a float, at least one oyster container configured to hold oysters and be carryableon the float, and a driver operable to periodically move each of the at least one oyster container between an underwater position and an above water position.

The invention provides a method for repairing fishery resources in an estuary sea area. The method comprises the steps that a plurality of buoyant raft type hanging rows are arranged in a sea area to be repaired, a plurality of ropes are connected to the lower portions of the buoyant raft type hanging rows, and oyster shells or oyster seeds are strung on the ropes. According to the method, on one hand, a spatial heterogeneity three-dimensional biological structure can be provided for a sea area, habitats and shelters are provided for many important benthic invertebrates, fishes and planktonic crustacean, so that the ecological diversity of the sea area is improved, and the fishery resource quantity of the sea area is restored; and on the other hand, oyster breeding can be conducted, the advantages of protection and utilization are achieved, and practicability is high.

The invention provides a breeding method of a stress-resistant crassostrea gigas new variety. The method comprises the steps that 1, crassostrea gigas with regular shell shapes is selected, and elimination selection is carried out; 2, parent shellfishes with the strongest stress resistance are selected out, and dissecting is carried out after artificial maturation promotion to obtain sperms and ova; 3, after being cleaned, the ova are put into seawater filtered by sand to be cured; 4, one-to-one fertilization is carried out on the cured ova and sperms in sand-filtered seawater to establish families; and 5, the fertilized ova of the different families after fertilization are put into different plastic barrels, the fertilized ova are incubated in sand-filtered seawater, and larva cultivationis carried out. According to the method, along with prolonging of oyster culture time and year-by-year increasing of the oyster death rate, the advantages of the new variety are more remarkable, thelower death rate enables farmers to try to culture oysters of two years old or above, large-size and high-quality oysters more popular with consumers, especially e-commerce, can be produced, and the method has great popularization value.

The invention discloses a multi-modular oyster breeding pasture and raft type wave energy integration device suitable for deep and far sea. The device comprises modular oyster breeding frames and raft type wave energy devices, wherein the raft type wave energy devices are arranged between every two adjacent modular oyster breeding frames. Under the action of wave load, the raft type wave energy devices are pushed to capture wave energy to generate power through relative movement between the modularized oyster breeding frames. Relative motion response generated between the breeding frames under the action of waves is effectively utilized, meanwhile, energy is absorbed through the raft type wave energy devices to reduce the motion response, structural safety is guaranteed, and long-term stable and efficient operation of large-scale modern marine ranch operation equipment, monitoring facilities and the like is achieved.

The invention discloses a method and a device suitable for oyster seabed culture. The culture method comprises the following steps: selecting a culture sea area; selecting young oysters; designing an oyster seabed culture device; putting the culture device into the culture sea area and enabling the whole device to be located on the seabed; and management in the oyster culture period: during the oyster culture period, harvesting oysters when the oysters reach the commodity specification and the soft parts of the oysters are fat and full. The culture device comprises an upper floating body part and a lower fish reef structure, the floating body part is of a serial connection structure formed by culture ropes, a pressure-resistant buoyancy body, a plurality of shells and hanging rings are connected in series from top to bottom, the fish reef structure is a hollow base body, a cross beam is arranged on the upper portion of the fish reef structure, the hanging rings are fixedly connected with the cross beam, and the floating body part is fixedly connected with the fish reef structure. Open sea seabed oyster culture sea areas are developed and utilized, storm resistance and falling prevention are achieved, the number of attachments is small, large-size oysters can be cultured, and the quality and yield of the cultured oysters can be remarkably improved.

The invention belongs to the technical field of oyster breeding, and particularly relates to a deep-sea culture device for triploid oysters. The deep-sea breeding device comprises a first breeding mechanism and a first cleaning mechanism, openings are formed in the two ends of the first breeding mechanism, a first breeding plate is arranged in the first breeding mechanism, and the two ends of the first breeding plate are connected with the inner side wall of the first breeding mechanism. The first breeding mechanism is arranged, the first breeding plate is arranged in the first breeding mechanism, a plurality of breeding cavities are formed in the first breeding plate, a first groove is formed in the bottom of the first breeding plate, a first rotating plate is arranged in the first groove, and the capability of resisting tidal water of the device is improved; and the first cleaning mechanism is arranged, a plurality of first cleaning wheels are arranged at the bottom of the first cleaning mechanism, a first pipeline is arranged on the first cleaning wheels, and a plurality of first water outlets are formed in the outer surface of the first pipeline, so that the oyster cleaning process is facilitated, and the functionality of the device is improved.

The invention discloses large ocean engineering equipment for regularly lifting out an oyster breeding suspending cage from the water surface, and relates to the technical field of aquaculture engineering. The equipment comprises a base platform, a scallop platform and a passing platform, wherein the base platform is of a square structure; the base platform is provided with twelve support columns;the passing platform is arranged above the base platform; the passing platform is supported by the support columns on the base platform; and the scallop platform is arranged between the passing platform and the base platform. According to the large ocean engineering equipment for regularly lifting out the oyster breeding suspending cage from the water surface, time of leaving water is provided for oyster growth, oysters are enabled to receive sunlight and air, the content of polysaccharides, taurine and glutamic acid in the oysters is increased, the mouth feel is fresher and sweeter, and meanwhile, according to relevant researches, the sale price of the oysters is three times that of ordinary oysters; and the oysters are lifted out of the water surface, so that a breeding water body is ensured to have purification time and a certain protective effect is achieved for ocean ecology.

A method and device suitable for oyster seabed culturing, the cultivating method comprises: selecting a sea area for culturing; selecting oyster seedlings; designing an oyster seabed cultivating device; : During oyster farming, oysters can be harvested when they reach commercial specifications and their soft parts are plump. The aquaculture device comprises an upper floating body part and a lower fish reef structure, the floating body part is formed by a growing rope as a series structure, and connected in series from top to bottom is a pressure-resistant buoyant body and a plurality of shells and hanging rings, the fish reef The structure is a hollow base body, the upper part of which is provided with a beam, the hanging ring is connected and fixed with the beam, and the floating body part is connected and fixed with the fish reef structure. The invention develops and utilizes the seabed oyster cultivation sea area in the open sea, is resistant to wind, waves and shedding, has few attachments, can cultivate large-sized oysters, and can significantly improve the quality and output of the cultivated oysters.

The invention relates to an ecological purification method for oyster cultivation. The ecological purification method of oyster culture according to the present invention comprises the following steps: providing an oyster culture pond or fish pond, introducing seawater filtered through a net filter, and inoculating micro-ecological preparations such as microalgae and probiotics into the water before stocking oysters; Then hang the oysters in the culture pond or fish pond according to the proportion of 5% of the water body area, and replant the microalgae and probiotics every two weeks; purify for 3-4 months, and then harvest. During this purification period, the content of harmful substances such as ammonia nitrogen, nitrite nitrogen, and chemical oxygen demand in the aquaculture water body is significantly reduced, and the dissolved oxygen content in the water body is increased, which promotes the improvement of water quality; at the same time, it significantly increases the fattening rate of oysters and reduces The content of heavy metals in oysters can achieve a good effect of purifying oysters and improving the quality of oysters. The purified product obtained by the method of the invention reaches the national pollution-free food standard.

The present invention provides a method for cultivating a new strain of low temperature resistant Crassostrea sikamea in the North, wherein Crassostrea sikamea and Crassostrea gigas that belong to Crassostrea are selected; by use of Crassostrea sikamea and Crassostrea gigas with different temperature tolerance and salt tolerance, through hybridization and then selfing, purification, hybridization,and selfing for multiple generations of breeding, finally the new strain of low temperature resistant Crassostrea sikamea is obtained. Practice has proved that the outstanding advantages of the low temperature resistant Crassostrea sikamea obtained by the use of the method in farming are improved low temperature resistance, high survival rate, and greatly increased growth rate, and compared withordinary varieties of Crassostrea sikamea, the growth rate can be increased by 30%, the survival rate is increased by 50%, and the low temperature resistance is increased by 5-6DEG C. The new strain of Crassostrea sikamea obtained by the use of the method can overcome the winter death problem of Crassostrea sikamea in the North and ensure the sustainable development of Crassostrea sikamea farmingindustry.

The invention relates to the field of shellfish genetics and breeding in marine biotechnology, in particular to a seed production method for improving the summer survival rate of long oysters. The method includes the steps of parent selection, breeding line construction, spat optimization, germplasm purification and the like. The invention utilizes the resistance characteristics of oysters at different developmental stages, and uses two extreme acute environmental stresses of dry dew and high temperature to efficiently screen oysters at the spat stage and adult stage, respectively, so as to improve the efficiency of breeding and shorten the selection time. The breeding cycle can significantly improve the summer survival rate of oysters. The method has the advantages of strong practicability, remarkable effect and easy popularization. The germplasm of new strains of oysters with high summer survival rate can be obtained through the invention, and the systemic risk of the oyster breeding industry can be significantly reduced.

The invention relates to the technical field of sea cucumber culture equipment, in particular to a cubic sinking type sea cucumber and oyster polyculture device. The device comprises a plurality of square cubic net cages which sink into the seabed, the tops of the square cubic net cages are connected with buoys through lifting ropes, the buoys are arranged on the sea surface to facilitate positioning, and the square cubic net cages can be put in rows; the square cubic net cage comprises a steel structure frame and a culture net cage internally provided with oyster culture ropes, the culture net cage is detachably assembled in the steel structure frame, and the steel structure frame is made of seawater corrosion resistant steel and comprises a square three-dimensional frame composed of horizontal frame cross beams and vertical supporting stand columns. Reinforcing beams are locally added to increase the strength of the whole frame; the culture net cage is made of a knotless net, the periphery of the culture net cage is provided with a binding band, the binding band is used for binding the culture net cage on the steel structure frame, a plurality of oyster culture ropes are arranged in the culture net cage, and the culture net cage is provided with a retractable opening, so that sea cucumber and oyster fry throwing and catching operation is facilitated.

The invention provides a method for crassostrea nippona ecological breeding in a high-temperature period. According to the method, ecological breeding is carried out for accelerating maturity of parent oysters in a northern summer high-temperature period under conditions of high pond water temperature and rich bait materials; a conceptacle index method and effective accumulated temperature are combined for accurately determining egg laying time of the parent oysters to obtain high-quality mature fertilized ova; egg laying speed and egg laying quantity are increased by adoption of a low-temperature induction egg-laying method. Growth and development speed and survival rate of larva are increased through scientific management, comb shells are developed to serve as a substrate for spat collection due to long crassostrea nippona aquaculture time, and firmness in spat attachment, less proneness to breakage and shedding and suitableness for mariculture and off-sea deep water aquaculture are realized; by ecological culture of spats in ponds, fast growth of the spats is promoted by taking advantages of high water temperature and rich bait materials in the ponds while production cost is greatly reduced, and on the other hand, the spats are exercised, and mariculture survival rate is increased.

The invention relates to the technical field of oyster culture, in particular to an offshore original ecological oyster culture method. The offshore original ecological oyster culture method comprisesthe following steps: selecting different water areas for culture at different stages of oysters, performing piling at certain intervals in a culture area, arranging pile connecting lines in a longitudinal and transverse straight line manner, and fixing transverse strips on piles, so that the piles are mutually fixed, wherein the height of the transverse strips is 1m or above greater than the seasurface in a big tide, wood strips or bamboo poles are fixed on the transverse strips in parallel to form a rectangular fixed bent frame, an oyster attachment base is hung on the transverse strips andthe oyster attachment bas is positioned between a high tide line and a low tide line, so that oyster strings are in a submerged state in a rising tide and are in a dry and exposed state in a fallingtide; and the oysters are in a primary state similar to an intertidal zone. According to the offshore original ecological oyster culture method, the survival rate of oyster breeding is increased, andthe oyster breeding space is expanded.

The invention relates to the technical field of oyster breeding, in particular to a breeding method of good young triploid oysters. The breeding method comprises the following steps: S1, parent selection, S2, sperm and egg extraction, S3, larva breeding, S4, adherance putting, S5, mariculture and S6, detection. The triploid is high in glycogen content and good in quality and taste, marine buoyant raft culture is adopted, and compared with a traditional mode, the production cost is low, management is easy, the oyster growth speed is high, the individual shell type is regular, the hemps are uniform in size, manual operability is high, the oyster yield is high, products are not prone to being lost, the characteristics determine that the triploid oysters cultured by the method have conditions to enter domestic and international high-grade oyster markets to replace and improve the existing oyster cultivation varieties, so that the huge domestic oyster cultivation industry is really driven to realize industrial upgrading.

The invention provides an oyster shallow-sea breeding method resistant to waggling caused by wind waves and capable of avoiding floating ice. According to the technical scheme, an oyster shallow-sea usual breeding device is involved, the two ends of a large rope (8) are fixedly connected with hanging rings (3), the large rope (8) penetrates into connecting rings (9) and is knotted to evenly fix the connecting rings (9), hanging ropes penetrate into the connecting rings (9) and are knotted to fix the connecting rings (9), the upper ends of the hanging ropes are fixedly connected with floating balls (2), the floating balls (2) float on a sea surface (1), and the lower ends of the hanging ropes penetrate into cylindrical holes (19) of breeding barrels (6), the tail ends of the hanging ropes are knotted to fix the breeding barrels (6), and the hanging rings (3) at both ends of the large rope (8) are connected with two pile ropes (4) respectively. The method has the advantages that oyster breeding can be implemented in sea areas under different sea conditions, and the normal growth of oysters is ensured; a broad offshore sea area space is expanded for oyster breeding, and the sustainable development of marine environment protection and aquaculture is achieved.

The invention discloses an attachment base for oyster cultivation, which comprises a base column, the base column is a cylindrical hollow structure, an oyster scraping device is provided at the top of the base column, an opening is provided on the column body, and a hole just meshed with the opening is provided on the opening. The oyster attachment sheet is provided with a point at the bottom, and an oyster collecting tray surrounding the base column is arranged above the point. The structure design of the attachment base for oyster cultivation of the present invention is ingenious, and its transportation, installation and management are convenient, without the need for manual harvesting of oysters, which reduces the labor intensity of the cultivation personnel, and at the same time improves the tidal flat and space utilization rate, and maximizes its usable area, effectively The contact surface with seawater flow is expanded, the probability of oyster attachment is increased, and the output of oysters is increased.

The invention discloses an anti-falling method and device in the northern hanging culture period of oysters. The anti-falling method is based on an anti-falling device, and a specific anti-falling breeding method is combined. A main body of the device comprises an anti-falling device frame and an oyster hanging cultivation rope; the anti-falling device frame is a cylindrical closed frame defined by iron wires, and the frame is covered with a polyethylene net. An oyster hanging cultivation rope penetrates through the inner axis position of a frame of the anti-falling device, a plurality of chlamys farreri shells are clamped in the middle of the oyster hanging cultivation rope, the chlamys farreri shells are fixed through a chinlon monofilament rope, and a falling stone is connected to the lower portion of the oyster hanging cultivation rope. According to the method and the simple device for preventing the crassostrea gigas from falling off, the defect that crassostrea gigas falls off due to the influence of stormy waves along with individual growth in the growth process caused by traditional crassostrea gigas hanging rope culture can be overcome, on one hand, the falling-off degree is reduced, on the other hand, the falling-off individuals can be collected at the bottom of the device, crassostrea gigas cannot be lost, and the crassostrea gigas is prevented from falling off. The method breaks through the traditional oyster breeding method and technology.

The invention belongs to the technical field of oyster breeding, and particularly relates to a triploid oyster breeding device for a shallow beach. The triploid oyster breeding device comprises a first floating mat, the first floating mat is provided with first partition plates and first breeding plates, the first partition plates and the first breeding plates are distributed on the first floating mat in a staggered mode, and the upper surfaces of the first breeding plates are provided with a plurality of breeding cavities. According to the triploid oyster breeding device for the shallow beach, the first floating mat is arranged, the first floating mat is provided with the first partition plates and the first breeding plates, the first partition plates and the first breeding plates are distributed on the first floating mat in the staggered mode, the multiple breeding cavities are formed in the upper surface of a first breeding plate, a plurality of water outlet holes are formed in the bottoms of the multiple breeding cavities, a plurality of hollow cavities are formed in the first breeding plate, the positions of the multiple hollow cavities correspond to the positions of the multiple breeding cavities, and the multiple hollow cavities and the multiple breeding cavities are communicated. Four flow guide plates are arranged at the bottom of the first breeding plate, so that the tide resistance of the triploid oyster breeding device for the shallow beach is improved.

The invention relates to the technical field of oyster cultivation, in particular to selenium-rich oyster feed and a preparation method thereof.The selenium-rich oyster feed is prepared from, by mass, 18-32 parts of selenium-rich corn flour, 8-14 parts of sweet potato powder, 9-15 parts of selenium-rich spirulina, 7-9 parts of coscinodiscus, 7-9 parts of thalassemia, 3-5 parts of shrimp shell meal, 3-5 parts of fish bone meal and 2-6 parts of silkworm chrysalis meal. 10-18 parts of sesame oil residues, 5-8 parts of a traditional Chinese medicine mixed solution, 2-3 parts of a compound vitamin additive, 1-1.5 parts of selenium-enriched yeast and 0.2-0.4 part of cellulase. According to the invention, the selected coscinodiscus and thalasiosira in the raw materials are natural biological baits for oysters in a natural sea area environment, and the added selenium-enriched spirulina enables the content of selenium in the feed to be rich, so that the feed also has relatively strong oxidation resistance and immune function, the immunity of the oysters is improved, and the feed is suitable for being eaten by the oysters. The feed can effectively enhance the physique of the oysters, reduces the prevalence rate of the oysters, also reduces the breeding labor amount and the breeding cost, and is safer to eat aquatic products.