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40results about How to "Expand the scale of farming" patented technology

Method for preparing earthworm cultivation substratum

The invention discloses a method for preparing earthworm cultivation substratum. By mixing livestock dung and edible fungus residue without foreign matters to carry out anaerobic fermentation, the method obtains the substratum for cultivating and reproducing earthworms, the livestock dung is pig dung or cow dung or the mixture of pig dung and cow dung, and the edible fungus residue is residue which is left over in the growth of cultured saprophytic lignicolous fungi or coprophilous fungi. Since the method utilizes the livestock dung and the edible fungus residue as the cultivation substratum to raise the earthworms, the method not only solves the problem of dung accumulation and waste and prevents environment pollution, but also increases the cultivation scale and growth quality of the earthworms by adding the edible fungus residue, thus effectively increasing the output of the earthworms.
Owner:NANJING AGRICULTURAL UNIVERSITY

Energy-saving air-lift recirculating aquaculture fish pond system

The invention relates to an energy-saving air-lift recirculating aquaculture fish pond system, and belongs to the technical field of aquaculture equipment. A circle or section of sewage draining pond is arranged on the periphery of a fish pond and comprises a settling pond, a precision filter pond, a biological purification pond, a disinfection pond and an air-lift pond which are sequentially arranged from front to back, water in the fish pond enters a filter pond through a drain pipe, overflows into the precision filter pond after settling and filtering, and enters the biological purification pond from the bottom after being filtered by the precision filter pond, harmful substances such as ammonia nitrogen in the water are removed by means of biological degradation, the water overflows into the disinfection pond, and the disinfected water flows back to the fish pond after oxygen enhancement by an air-lift device. The energy-saving air-lift recirculating aquaculture fish pond system is small in occupied area, compact in structure, integrated in layout, low in investment, simple, low in aquaculture cost, excellent in water treatment effect and beneficial to popularization, and aquaculture scale and efficiency are improved.
Owner:FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI

Fresh-keeping and preserving method of sweet potatoes by using double-film hot bed

The invention discloses a fresh-keeping and preserving method of sweet potatoes by using a double-film hot bed, which comprises the following steps of: (1) selecting a cellar bed; (2) preparing the cellar bed; (3) sterilizing the cellar bed; (4) soaking seeds in a medicinal liquid; (5) preserving the seeds in the cellar; (6) earthing up the seeds and covering the earth with films; (7) managing the temperature; and (8) taking the seeds out of the cellar. The method has high sprouting rate and fresh preserving rate, ensures sufficient seeds in production, and preserves nutrients and water; after the seeds are sown, sprouting is fast, and a lot of seedlings emerge, which are beneficial to earlier transplanting for field production; the yield is increased, and the planting area is promoted tobe extended; the production value is increased after preservation, and the newly-added net income of farmers can be doubled; and the invention can provide more raw materials for processing industry, prolong the processing time, promote the development of the processing industry, push forward the deep development of the processing industry, and create more values for the society.
Owner:李厚明 +1

Primary frame of valveless lift type deep water net cage

A main frame of a valveless lifting deep water net cage comprises a float pipe and a connecting frame, wherein the float pipe comprises an inner round float pipe and an outer round float pipe which are arranged at concentricity and are fixed on the same level surface through the connecting frame; and both the inner round float pipe and the outer round float pipe are provided with water inlet / outlet ports and air inlets. When the air inlets and the water inlet / outlet ports are opened at the same time, and water is fed in the float pipe from the water inlet / outlet ports, the net cage can be controlled to submerge to a predetermined depth; when compressed air is fed in from the air inlets, the water in the float pipe is discharged from the water inlet / outlet ports so as to ensure that the net cage rises to water surface. The main frame of the valveless lifting deep water net cage can be used to carry out safety aquatic breeding in an open sea area at a depth of between 20 and 60 meters; before a typhoon or a red tide, the net cage can be settled to a predetermined depth within 15 to 20 minutes when submerged at a depth of 8 m, thereby avoiding damages on the net cage caused by typhoon and ocean wave, or damages on the fishes bred in the net cage caused by the red tide.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Equipment and method for improving live transportation survival rate of edgy fishes

The invention provides equipment for improving the live transportation survival rate of edgy fishes. The equipment comprises a tank (1), a plastic cover film (2) matched with the tank (1), and a water purifier (3). The water purifier (3) comprises a water distribution layer (4), an ice cube layer (5), a filter cotton layer (6), an active carbon layer (7), and a water storage layer (8), wherein the above layers are arranged from top to bottom. The lower part of the tank (1) is provided with a water inlet pipe (9) to be connected with the water distribution layer (4) via the water purifier. The upper part of the tank (1) is provided with a provided with a water outlet pipe (10) to be connected with the water storage layer (8) via the water purifier. The water outlet pipe (10) of the water purifier is provided with an airlift pump interface (11). According to the technical scheme of the invention, a water quality purification method for water in transportation facilities is provided for aquaculture practitioners during the transportation process based on the physiological characteristics of saury and shad. In this way, the collision injured risk of fishes when frightened is reduced, and the water quality of the transportation water is improved. Meanwhile, the metabolites of fishes are timely eliminated, so that the stress reactions of edgy fishes, such as saury and shad, are reduced. Moreover, the risk of mechanical traumas and the risk of physiological endogenous injuries during the transportation process are reduced. The live transportation survival rate of fishes is improved. Furthermore, the temporary-rearing or cultivation survival rate of fishes after the transportation process is improved.
Owner:SUZHOU FISHSEEDS BIOLOGICAL TECH CO LTD

Device for culturing Patinopecten yessoensis

The invention relates to a device for culturing Patinopecten yessoensis, which comprises a first net. The device is characterized in that the device also comprises a plurality of second nets and a frame; the first net is tightened up and smoothly fixed in the frame; the second nets are sewn and fixed on a body of the first net respectively and form a plurality of net bags mutually spaced in turn with the first net; and one side of each net bag is provided with an openable bag mouth. The device has the advantages that the device is simple in structure, easy to manufacture and low in cost, effectively prevents the mutual collision and occlusion among scallops from causing injury to shells and soft tissues, greatly improves survival rate, reduces production management operation, lowers labor intensity, has strong wind-wave resisting capability, is applicable to environment conditions with rapid flow and high waves in deepwater areas, and is favorable for further enlarging culture range.
Owner:方建光

Method for large-scale ecological aquaculture of coilia ectenes in greenhouse

The invention discloses a method for large-scale ecological aquaculture of coilia ectenes in a greenhouse. The method which adopts semi-running-water ecological aquaculture in the greenhouse includes: 1) water source selection; 2) aquaculture facility configuration; 3) ecological aquaculture; 4) adult fish harvest. Underground water of a deep well deeper than 30m is selected to serve as the water source, and an eel formula feed is used as a powdery formula feed. The method for large-scale ecological aquaculture is large in aquaculture scale, high in aquaculture density and high in yield, and coilia ectenes bred according to the method is high in survival rate and extremely high in nutritive value.
Owner:江苏省农业科学院泰州农科所

Artificially induced gynogenesis method for Pseudobagrus ussuriensis

ActiveCN103404461AAvoid toxic effectsIrradiation equipment is simple and easy to operateClimate change adaptationPisciculture and aquariaPlant Germ CellsHigh survival rate
The invention discloses an artificially induced gynogenesis method for Pseudobagrus ussuriensis, comprising the steps of heredity inactivation of sperms, cold shock treatment of germ cells, and hatching; the best time for inactivating the sperms of the Pseudobagrus ussuriensis is found out by regulating the irradiation distance and the irradiation time of ultraviolet; the cold shocks with different time spans are carried out at different time starts after fertilization, the treatment time for a highest survival rate is determined to be the proper time span of the cold shock, and thus the optimal condition suitable for artificially induced gynogenesis of the Pseudobagrus ussuriensis is screened out. According to the technical route of milter sex reversal-artificial gynogenesis-super-milter cultivating-complete milter cultivating, the invention provides a technological base for cultivating the super-milter of the Pseudobagrus ussuriensis and cultivating the monotropic complete milter, so that the cultivation scale is exoanded and the yield is greatly increased, so that the income of farmers is greatly increased, and therefore, the method has a broad industrialized cultivation prospect.
Owner:HUAIYIN TEACHERS COLLEGE

Taiwan loach high-efficiency industrialized breeding method

The invention relates to a cultivation method, and especially relates to a Taiwan loach high-efficiency industrialized breeding method. According to the breeding method, with steps such as breed selection, maturing promoting, spawning induction, hatching and fry raising, Taiwan loach breeding is standardized, and breeding speed is greatly improved. With the method, a hatching survival rate is stabilized at approximately 95%, such that artificially bred fries can be industrialized. Therefore, farmer demands can be satisfied fast, Taiwan loach breeding scale can be expanded, market demand can be satisfied, and farmer income can be increased.
Owner:LONGMEN XINYAO PLANTING & BREEDING SPECIALIZED COOP

Lifting cocoon cage disc splitting machine for industrial aquaculture and splitting method for lifting cocoon cage disc splitting machine for industrial aquaculture

ActiveCN111066747AReduce support pressureAvoid prone to shaking and dumping problemsAnimal husbandryAnimal scienceEngineering
The invention discloses a lifting cocoon cage disc splitting machine for industrial aquaculture. The lifting cocoon cage disc splitting machine for industrial aquaculture comprises a rack and is characterized in that flat supporting mechanisms are installed on the two sides of the rack respectively and are provided with supporting claws respectively to support a culture frame group through the supporting claws; a lifting mechanism and chain conveyors are installed among the rack; the lifting mechanism is installed between the chain conveyors; the culture frame group is lifted through the lifting mechanism; and the chain conveyor carries the culture frame group. By adopting the lifting cocoon cage disc splitting machine for industrial aquaculture, culture frames and cocoon cages are subjected to centralized treatment, transfer and the like by adopting a stacking manner in industrial sericulture, so that the culture scale is greatly increased, the culture efficiency is improved, and theculture yield is increased; and in order to split the stacked culture frame groups to enable the culture frame groups to be thrown into a production line one by one, the lifting cocoon cage disc splitting machine is designed specifically, so that the stacked culture frame groups can be split in a lifting manner, and realization of industrialized and large-scale culture operation is greatly promoted.
Owner:SHENGZHOU MOSANG HI TECH CO LTD

Fattening sheep house

The invention discloses a fattening sheep house which comprises a movable sheepcote and sheepcote frame. The middle of the movable sheepcote is divided into an upper layer and a lower layer spaced byexcrement leaking floors, the upper layer is the sheepcote portion enclosed by a fence, and the lower layer is an excrement layer. The excrement layer is divided into two excrement channels with unilaterally slanting bottom surfaces by a partition plate, and the lowest positions of the middles of oblique surfaces are connected with urine collecting pipes. The excrement layer is provided with an excrement scraping mechanism. A roller driving a braking mechanism is arranged on the bottom surface of the excrement layer. The sheepcote frame comprises a steel frame provided with an automatic drinker, a vertical traction mechanism and a horizontal traction mechanism and in a cubic shape. Upper-layer carrying plates and lower-layer carrying plates which are arranged vertically are arranged in thesheepcote frame, at least the upper-layer carrying plates or the lower-layer carrying plates can be carried on the movable sheepcote. The vertical traction mechanism drives the upper-layer carrying plates to perform movements in the sheepcote frame in the vertical direction. The horizontal traction mechanism drives the lower-layer carrying plates to perform movements in the sheepcote frame in thehorizontal direction. The fattening sheep house is high in automation degree and can fully drive the space of the sheep house.
Owner:ANHUI AGRICULTURAL UNIVERSITY +1

Seabed cage-breeding device for comb shells

The invention discloses a seabed cage-breeding device for comb shells and solves the problems that in the prior art, the breeding type is easily affected by environment, so that the death rate of the comb shells is high and the profit is low. The technical scheme of the invention is that: the seabed cage-breeding device comprises a netting, a support frame and a mouth-closing tube, wherein the support frame is arranged in the netting and connected with the netting to support the netting, and the mouth-closing tube is used for closing the mouth of the netting. The invention designs the novel seabed cage-breeding device; by adopting the seabed cage-breeding method, not only the problem that the raft breeding is affected by the surface temperature fluctuation and high water temperature in summer is solved, but also the problem of low recapture rate existing in the bottom sowing enhancement breeding method is also solved, the survival rate of scallops is high and the breeding density of young comb shells can be self-controlled according to actual conditions.
Owner:YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI

Intercropping method of loach in Zizania aquatica field

The invention discloses an intercropping method of loach in Zizania aquatica field, and relates to the technical field of agricultural cultivation. The intercropping method includes steps of (1), land selection; (2), soil preparation; (3), construction of cultivation field; (4), construction of a temporary rearing field; (5), preparation for seedlings; (6), transplanting and field planting; (7), cultivation of loach fry; (8), field management. The method can realize the intergrowth of loach and Zizania aquatica, and is ecological and environment-friendly, simple in operation; the cultivation scale of loach can be enlarged, and the loach cultivation development is promoted.
Owner:合肥卓畅农业科技有限公司

Seed selection method for stichopus japonicas seeds with protosalt resistance

The invention provides a seed selection method for stichopus japonicas offspring seeds with protosalt resistance. The seed selection method is characterized in that in the late March, and before sea water temperature going below 12 DEG C, local stichopus japonicas bred for over 1 year and a half and weighing over 250g each are selected from a river port low-salt area to be a seed selection base group and separately bred in a pond for a while; by May with flood season salinity around 18.8 to 21.5 and temperature 16 DEG C, stichopus japonicas which can still ingest and grow are chosen to be seed stichopus japonicas, then artificially bred under the environment with salinity around 18.8 to 21.5 to achieve F1 offspring seeds; mature F1 offspring individuals after two years breeding then respectively conduct selfing and crossbreed with the selected base group to achieve F2 offspring; breed and growth of the F2 offspring are conducted under a condition with salinity around 18.5 to 21.5; the above phases are circulated, after three to four accumulated selection, stichopus japonicas seeds with protosalt resistance and stable inheritable characters can be achieved; breeding range can be enlarged; product quality and output can be enhanced; and production risks can be reduced and economic benefits of fishermen can be improved.
Owner:MARINE BIOLOGY INST OF SHANDONG PROVINCE

Formula and dilution method of diluent for normal-temperature preservation of Hu sheep semen

InactiveCN110959607ALow costEasy configuration processDead animal preservationPhysiologyVitality
The invention provides a formula and a dilution method of a diluent for normal-temperature preservation of Hu sheep semen. According to the invention, Hu sheep semen is subjected to normal-temperaturepreservation by using five diluents, and the motility rate, the vitality, the plasma membrane integrity rate, the acrosome integrity rate, the survival time and a certain motion parameter in the semen preservation period are detected by using a computer-aided sperm analyzer (CASA), a Coomassie brilliant blue staining method, a hypotonic test method and other methods; according to the diluent formula obtained by screening, the motility rate and the vitality are slowly and stably reduced in the semen preservation period, the time at the vitality of more than 0.6 can reach more than 3 days, andthe total survival time can reach more than 17 days; and a purpose of the invention is to objectively evaluate and screen out a formula of a diluent with the best Hu sheep semen normal-temperature preservation effect so as to provide reference for popularization and application of a Hu sheep semen preservation technology in production and further improve the breeding scale of Hu sheep.
Owner:YANGZHOU UNIV

Wild triplophysa fish greenhouse net cage used in frigid zone in winter

The invention discloses a wild triplophysa fish greenhouse net cage used in a frigid zone in winter. The net cage comprises a culture pond. The two sides of the culture pond are provided with first transverse shafts, a belt roller is fixedly installed on each first transverse shaft, two transverse tensioning shafts are arranged between the two belt rollers, when the net cage is in use, a servo motor power system drives the first transverse shafts to rotate, excrement of fish cultured in the net cage, remaining feed and other sewage fall into first groove pipes from an excrement leakage hole, the fallen fish excrement rotates along with a belt, the servo motor power system stops rotating every time the belt rotates by a certain distance, at the moment, two first electric stretchable rods are stretched, the manual culture pond cleaning time can be saved, automatic removal is achieved, great contributions are made for automatic culture technology, the belt rotates to drive the multiple first groove pipes to move so as to drive internal circulation of water inside a culture pond, the phenomenon that growth of fish is affected due to the content of oxygen in water at the position of thenet cate is excessively low can be avoided, the indoor dish culture technology is improved, the culture scale can be enlarged, and the net cage is suitable for being used and popularized.
Owner:TARIM UNIV

Beekeeping method using circulating combined frame beehive

ActiveCN112021263AIncreased annual honey productionIncrease honey productionBeehivesBrood combBeekeeping
The invention discloses a beekeeping method using a circulating combined frame beehive. The method is applied to a circulating combined frame feeding box and comprises the following steps of manufacturing the circulating combined frame feeding box, installing honey pollen and brood combs, introducing bees into the circulating combined frame feeding box, performing daily management and collecting honey; and feeding Chinese bees in the circulating combined frame feeding box, correspondingly adjusting the number of bee colonies according to different seasons, performing cutting according to the fact that all honey on the upper layers of frames is covered and mature, performing layer-by-layer upward pushing, and adding new sliding sleeves to the lower layers of the frames. The beekeeping method has the beneficial effects that the beekeeping method is suitable for beehives and matched frames with biological characteristics of the Chinese bees, simplicity, high efficiency and high applicability, the beekeeping efficiency is improved, and the beekeeping benefit is increased.
Owner:四川省蜂业技术开发研究所有限公司 +1

Primary frame of valveless lift type deep water net cage

A main frame of a valveless lifting deep water net cage comprises a float pipe and a connecting frame, wherein the float pipe comprises an inner round float pipe and an outer round float pipe which are arranged at concentricity and are fixed on the same level surface through the connecting frame; and both the inner round float pipe and the outer round float pipe are provided with water inlet / outlet ports and air inlets. When the air inlets and the water inlet / outlet ports are opened at the same time, and water is fed in the float pipe from the water inlet / outlet ports, the net cage can be controlled to submerge to a predetermined depth; when compressed air is fed in from the air inlets, the water in the float pipe is discharged from the water inlet / outlet ports so as to ensure that the net cage rises to water surface. The main frame of the valveless lifting deep water net cage can be used to carry out safety aquatic breeding in an open sea area at a depth of between 20 and 60 meters; before a typhoon or a red tide, the net cage can be settled to a predetermined depth within 15 to 20 minutes when submerged at a depth of 8 m, thereby avoiding damages on the net cage caused by typhoon and ocean wave, or damages on the fishes bred in the net cage caused by the red tide.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

New method for changing sale process of shell eggs

The invention relates to a new method used for sale process of shell eggs (namely eggs with shells, such as chicken eggs and duck eggs). According to the new method, egg liquid (including egg white and yolk) in the shell eggs are separated from egg shells and are taken out to be packaged and sold, and the new method can be applied to all sale environments such as market places, supermarkets, various retail sales, hotels, vegetable markets and electronic commerce which can be used for selling. According to the new method, the problems of easiness in breakage, insanitation and short shelf life of shell eggs can be overcome, the requirements on long-distance transportation and long-term storage can be met, the egg liquid of the shell eggs, same as milk, can be preserved for a long time, people at the regions at which eggs cannot be cultured can eat the shell eggs, and people at the regions which have egg culture advantages can expand the cultivation scale, and do not need to worry about the problems of shelf life and long-distance transportation.
Owner:王明琦

Feed additive for improving pregnancy rate and preparation method thereof

The present invention discloses a feed additive for improving pregnancy rate and a preparation method thereof. The feed additive is composed of the following raw materials in parts by weight: 25-30 parts of corn, 10-20 parts of soybean meal, 5-10 parts of wheat bran, 15-20 parts of fish meal, 20-25 parts of chicken manure, 4-6 parts of a compound feed, 1.5-2.5 parts of actinolite powder, 2-7 partsof processed yeasts, 5-15 parts of plant alkaloids, 0.5-1 part of an attractant, 0.5-1 part of edible salt, 0.5-1 part of amino acid and 1-1.5 parts of calcium dihydrogen phosphate. The feed additiveeffectively and healthily reduces a phenomenon that the estrus synchronization rate of livestock is not high, has a positive effect on the pregnancy of the female livestock, and increases the numberof breeding.
Owner:GUANGZHOU JUCHAN MODERN AGRI RES INST CO LTD

Efficient sectional turtle culture breeding facility and method

The invention discloses an efficient sectional turtle culture breeding facility and method and belongs to the field of turtle breeding. The breeding facility comprises a big pond and further comprisesa small pond temperature-holding area, a big pond dyke is built around the big pond, an annular ditch is built on the inner side of the big pond dyke, the small pond temperature-holding area is provided with a light-pervious temperature-holding shed, a plurality of oxygen supply pumps, a waterway passage and a cage door device, and the cage door device comprises a gate and a cage door. The breeding method includes that an ecological three-dimensional breeding mode is adopted, and turtles eat live shrimps and are not fed with animal or vegetative processed feed, thereby being less prone to being infected with diseases; fishes eat dung of the turtles and remains of the shrimps to form a three-dimensional microcirculation system which is imitated wild breeding, and bred turtles are high in nutritional value. The efficient sectional turtle culture breeding facility has the advantage that shrimp seeds and turtles are fed separately; a small pond is provided with a temperature holding device, so that the shrimp seeds are prevented from being frozen to death.
Owner:宁波市明凤渔业有限公司

Energy-saving air-lift recirculating aquaculture fish pond system

The invention relates to an energy-saving air-lift recirculating aquaculture fish pond system, and belongs to the technical field of aquaculture equipment. A circle or section of sewage draining pond is arranged on the periphery of a fish pond and comprises a settling pond, a precision filter pond, a biological purification pond, a disinfection pond and an air-lift pond which are sequentially arranged from front to back, water in the fish pond enters a filter pond through a drain pipe, overflows into the precision filter pond after settling and filtering, and enters the biological purification pond from the bottom after being filtered by the precision filter pond, harmful substances such as ammonia nitrogen in the water are removed by means of biological degradation, the water overflows into the disinfection pond, and the disinfected water flows back to the fish pond after oxygen enhancement by an air-lift device. The energy-saving air-lift recirculating aquaculture fish pond system is small in occupied area, compact in structure, integrated in layout, low in investment, simple, low in aquaculture cost, excellent in water treatment effect and beneficial to popularization, and aquaculture scale and efficiency are improved.
Owner:FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI

Replacement boar feeding management operation method

The invention discloses a replacement boar feeding management operation method. The method comprises the following steps of selecting replacement boars, feeding the selected replacement boars according to weight, transferring the replacement boars into a boar house for independent feeding, preparing the replacement boars before training, and training the replacement boars. According to the replacement boar feeding management operation method, programmed management of selection, management, feeding, training and mating work of the replacement boars is achieved, training and mating of the replacement boars guarantee the health degree of piglets in the later period, the piglet breeding efficiency is improved, the breeding scale of a farm is expanded, the benefits of the farm are improved, and the method is very beneficial to pig breeding work.
Owner:河南新筑牧业有限公司

Chicken rearing equipment

The invention relates to the technical field of animal husbandry machinery and specifically discloses chicken rearing equipment. The chicken rearing equipment is composed of a fodder feeding system, a water feeding system, an excrement cleaning system, coops and a support system. Arrangement modes of the coops and arrangement modes of the water feeding system and the fodder feeding system are changed, the excrement cleaning system is designed, pollution is avoided since fodder and water are divided effectively in actual rearing, the excrement cleaning system can effectively remove excrement and falling feathers, the excrement and the falling feather are collected for post-treatment process, the excrement and rearing spaces are relatively divided, and stink is reduced; meanwhile, the coops are vertically arrayed, rearing density can be greatly increased, and economic benefit in rearing is improved.
Owner:SOUTHWEST UNIVERSITY

Compound acrossocheilus hemispinus feed and preparation method thereof

PendingCN108185126AConservation of wild germplasm resourcesEmission reductionFood processingClimate change adaptationDiseaseRapeseed
The invention provides a compound acrossocheilus hemispinus feed and a preparation method thereof. The feed comprises the following components in parts by weight: 20 to 32 parts of fish meal; 20 to 23parts of flour; 8 to 15 parts of corn protein powder; 12 to 18 parts of soybean meal; 10 to 16 parts of rapeseed meal; 2 to 5 parts of soybean oil; 4 to 6 parts of brewer's yeast; 0.2 to 0.5 part ofcomposite vitamin; 1.0 to 1.5 parts of composite minerals; 0.2 to 0.5 part of choline chloride; 1 to 2 parts of calcium dihydrogen phosphate; 0.1 to 0.2 part of laminarin; and 0.5 to 0.8 part of spirulina powder. The compound acrossocheilus hemispinus feed disclosed by the invention can solve the problem existing in the present artificial culturing process of acrossocheilus hemispinus that: growthspeed is slow; culturing cost is high; and nutrition stress diseases easily occur and frequently occur and fish physique declines due to the fact that substitute feed nutrient components do not meetthe requirements of the acrossocheilus hemispinus.
Owner:福建省淡水水产研究所

A kind of breeding method of low-salt-tolerant Apostichopus japonicus seed

The invention provides a method for breeding seedlings of low-salt tolerance sea cucumber, which is characterized in that: before the seawater temperature is 12°C in late March, select sea cucumbers that have been cultured for more than 1.5 years and have an individual weight of more than 250 g / head from the estuary-type low-salt sea area. The local sea cucumbers were isolated and temporarily raised in ponds as the basic population for breeding. When the salinity was 20±1.5 and the temperature was 16°C during the flood season in May, those still eating and growing normally were selected as seed ginseng and artificially grown in a salinity environment of 20±1.5. Breeding to obtain F1 progeny seedlings, and the mature F1 progeny individuals after 2 years of cultivation are then selfed and hybridized with the selected basic population to obtain F2 progeny. Under high temperature conditions, with this cycle, after 3 to 4 generations of selective breeding, low-salt-tolerant sea cucumbers with stable genetic traits and low salinity can be obtained, which can expand the range of suitable cultivation, increase yield and product quality, reduce production risks and Improve the economic benefits of fishermen.
Owner:MARINE BIOLOGY INST OF SHANDONG PROVINCE
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