54 results about "Forage fish" patented technology

The invention discloses a planting and breeding integrated ecological breeding method for a large fishpond. Famous and special breeding varieties such as common carps, golden carps, grass carps, chubs, penaeus vannawei, loaches, soft-shelled turtles, river crabs and the like are put in a suitable place to breed in a breeding pond; and the stocking ratio of herbivorous fishes to forage fishes to demersal residual feed animals by weight percentage is (35-40%) to (50-55%) to (10-15%). Proper biological varieties are selected according to biological requirements of ecological niches and cooperate to build an eco-friendly environment, forage grasses are planted for feeding the herbivorous fishes, the feces of the herbivorous fishes and a water body can produce primary biological baits, the primary biological baits are supplied to shrimps and secondary nutritional fishes, and organic detritus produced by the water body sinks to the bottom of water and is ingested by the demersal loaches, crabs and the like. At the same time, lotus roots and cane shoots are planted in the breeding water body and nutritive salt in the water body is removed for purifying the water, so that a novel high-efficiency energy-saving planting and breeding integrated ecological breeding mode is formed.

The invention discloses a method for large-scale breeding of large-standard mandarin fish fingerling. The method comprises the steps of 1 pool selection, 2 pool cleaning and disinfection, 3 forage fish breeding, 4 mandarin fish fry and large-scale fingerling breeding, 5 released density determination, 6 forage fish feeding, 7 water quality management and 8 disease control. The method is easy and convenient to operate, simple in device, easy to manage and high in fingerling survival rate. The method takes the lead in successfully breaking through a key of a large-scale mandarin fish fingerling technology at home and abroad, natural bait breeding through fertilizer controlled-release bags and manual bait domestication is used in cooperation for feeding are creatively and successfully achieved in the aspects of fingerling breeding, bait feeding and the like, the blank of domestic large-scale mandarin fish fingerling breeding in a pool is filled, the survival rate of the fingerling is over 80%, the water quality of the pool is kept good, most effective practical measures and means are created for thorough development of mandarin fish serving as a famous excellent breeding breed, and the method has the great social benefit and economic benefit.

The invention relates to a method for cultivating and artificial breeding plateau saline-alkali water area northern pike, aiming at providing a technology suitable for cultivating and artificial breeding the northern pike in the plateau saline-alkali water area. The method adopts first filial generation fingerling bred by wild northern pike to be cultivated into parent fish. The method is characterized in that before the northern pike fingerling is put into a pond, forage fish can be cultivated by an original pond, the northern pike fingerling with the length of 5cm is put into the pond aftertwo weeks, and the polyculture proportion between the northern pike fingerling and the forage fish is 1:200-300; when the temperature of the pond reaches to 7-8 DEG C, parent fish roe of the northernpike can be selected for semidry method artificial fertilization for 5min, and talc powder is used for abhesion after fertilization; oosperm is sterilized by malachite green solution and then enters into an incubator to be incubated; by controlling the speed and the flow rate of the water flow, the dead oosperm of the northern pike can be promoted to be discharged from a drain pipe; deep well water which contains 7-9mg / L of dissolved oxygen and has the water temperature of 12DEG C can be continuously pumped into the bottom of the incubator, and running water incubation can be carried out underthe dim light; and when the fingerling flatly swim to intake the exogenous nutrition, the fish can be fed by fish bait in time.

The invention discloses a green geo-engineering system device for regulating global climate change. The device is engineering for artificially simulating a natural upwelling fishery and a continental shelf shallow sea ecosystem fishery; deep nutritive salt-rich seawater is induced to upwell to a marine euphotic layer by utilizing an artificial induction upwelling marine ranching device; nutritive salt is prevented from sinking by utilizing an artificial shallow sea ecosystem marine ranching device; coordination of photo-thermal water and fertilizer resources is realized; sunlight energy is absorbed and is converted into biomass energy; carbon dioxide is absorbed and is recovered into phytoplankton; the concentration of atmospheric carbon dioxide is regulated; the global climate change is regulated; the phytoplankton is converted into zooplankton and economic animals such as fish, shrimps, crabs, shellfish, sea cucumbers and squids through a food chain and a food web of a marine ecosystem; seafood, fish meat, fish meal and fish oil are produced by catching, the fish meat serves as food, the fish meal serves as a feed, the fish oil can be processed into the food and can also be processed into biodiesel serving as energy, and the sunlight energy and the carbon dioxide are finally converted into the food and the energy on the broad marine euphotic layer.

The invention provides a food-grade safe type biomimetic simulated fish bait capable of being completely degraded, and relates to the technical field of fishing. The bait is prepared from the following components in parts by weight: 0.5-1 part of polyvinyl alcohol resin, 5-10 parts of edible gelatine, 5-10 parts of corn protein powder, 1-2 parts of hydrolyzed protein, 3-5 parts of aloe gel, 1-3 parts of corn peptide, 2-4 parts of microlite cellulose, 2-4 parts of dihydroxy acetone, 1-3 parts of a phagostimulant, 0.5-1 part of shea butter, 0.5-1 part of hyaluronic acid, 0.5-1 part of tea polyphenol, 2-4 parts of talcum powder, 1-2 parts of linseed gum, and 0.5-1 part of soybean lecithin. According to the bait disclosed by the invention, the corn protein powder, the edible gelatine and the aloe gel are used as main raw materials, the dihydroxy acetone is used as a plastifier, fish luring components of natural silk peptide, pit soil, esterified enzyme composite bacterial liquid and the like are added, according to the feeding characteristics of different fish varieties, the biomimetic bait with authentic features of various forage fish and shrimps is prepared, the bait can be completely biodegraded in natural environment, and pollution to the environment is little.

The invention discloses a turtle breeding method. The method comprises the following steps: 1) arranging a fish pond, namely selecting 10 to 30 mu of the pond of which the water depth is 1.6 to 2.8 meters, and dividing the pond into a plurality of regions by using plastic steel plates in the pond, wherein the plastic steel plates are arranged in the east-west direction, and double-stick grooves are both formed in the upstream and downstream ports of the regions; 2) throwing in young turtles, namely throwing the young turtles in set regions of the pond; 3) feeding the young turtles, namely using fresh and alive fish of which the bait amount accounts for 3% weights of turtles each day to feed the young turtles, and taking the turtles out of the pond after the turtles are fed for 24 to 36 months. The turtle breeding method provided by the invention adopts the fresh and alive fish to feed the turtles, so that occurrences of pathogens and pests are reduced, and the fresh and alive fish is provided in an autotrophic and self-sufficient manner, so that a lot of transportation processes and a frozen storage process can be saved to keep fish baits fresh and alive; forage fish is fed by taking perennial ryegrass, rice husks and the like as main feeding baits, and the perennial ryegrass, the rice husks and the like are planted around the fish pond, and can be used as feeding green fodders of the forage fish to improve the utilization rate.

The invention relates to a bionic feed for breeding adult mandarin fish. The bionic feed is prepared from the following raw materials in parts by weight: 40-50% of enzymolysis fish soluble extracts, 10-15% of shrimp powder, 10-18% of fermented soybean meal, 2-5% of vital wheat gluten, 5-10% of fermented corn protein powder, 7-11% of high gluten flour, 1.5-2% of calcium dihydrogen phosphate, 1-2% of multiple vitamins, 1-2% of multiple minerals, 3-6% of refined fish oil, 2-4% of a composite phagostimulant and 1-2% of high-activity probiotic agents. The bionic feed for breeding adult mandarin fish disclosed by the invention wholly replaces forage fish. The feed has movement and mouth feel of living forage fish, and is extremely easy to ingest, digest and absorb by mandarin fish. When the bionic feed for mandarin fish is applied for replacing the forage fish, the breeding density and the yield can be increased, the cost of the feed can be reduced, the yield per unit is increased, the waterexchange amount is reduced, and economic benefits are increased.

A snag-proof multi-purpose fishing weight apparatus combined with fish hook and a fish attractant / fish feeding stimulant delivery system generally comprises a slender tubular hollow shaft with small holes along its length which can be filled with fish attractant / feeding stimulant and then seep or ooze out of the small holes along the shaft into the surrounding water. The shaft has attached to it on one end (top) a flotation device and a flexible wire to which is attached a fish hook and main fishing line. The other end of the shaft (bottom), has a weight of the same diameter as the shaft and attached to it and extending from it on the same plane creating a smooth extension of the shaft. This configuration, underwater will naturally orient the apparatus in the upright vertical position with the float end and fish hook on top and the weighted end resting on bottom, while positioning the baited hook outward and away from shaft in view of foraging fish.

The invention discloses a method for breeding adult mandarin fishes, and relates to the technical field of aquaculture. The method comprises the following steps of pond selection, pond preparation, breeding of forage fishes, stocking of mandarin fish fingerling, breeding management, water quality management and fish disease prevention and treatment. The method has the advantages that production resources are made full use of, no professional equipment is required, breeding pollution is avoided, the breeding technology is standard, feed supply is scientific and standard, the quality of the adult mandarin fishes is improved to a large extent, and therefore the quality and the yield of mandarin fishes are improved.

The invention discloses a training facility for increasing the field viability of andrias davidianus. The training facility is characterized by comprising a mountain spring water purifying pool, andrias davidianus culturing pools, a training pool and a forage fish culturing pool, wherein the mountain spring water purifying pool, the andrias davidianus culturing pools, the training pool and the forage fish culturing pool are provided with water inlet ends and water outlet ends; the water inlet end of the mountain spring water purifying pool is connected with upstream river water, and the wateroutlets of the mountain spring water purifying pool are connected with the water inlet ends of the andrias davidianus culturing pools; the water outlet ends of the andrias davidianus culturing pools are connected with the water inlets of the training pool; the water outlet end of the training pool is connected with the water inlet end of the forage fish culturing pool; the water outlet end of theforage fish culturing pool is connected with an external drainage ditch. The invention also provides a method for training and culturing the andrias davidianus by utilizing the training facility. Through artificial training, the initiative predation capability of the andrias davidianus can be strengthened, andrias davidianus fries which can adapt to a field natural environment and have strong bodies, strong swimming ability, operation resistance and strong initiative predation capability can be cultured under an artificial condition, and a good release effect can be finally realized.

The invention discloses a giant salamander ecology cycle pool and a giant salamander cultivation method thereof; the giant salamander ecology cycle pool comprises a young salamander pool, a grown salamander pool, a fish pond and a purifying pool connected in sequence in cycle, thus forming a closed loop; the bottoms of the young salamander pool and grown salamander pool are provided with continuous slopes; the purifying pool is provided with a water pump, and a water outlet is arranged on the top of the slope in the young salamander pool; the fish pond cultivates mya arenaria as forage, and a bacillus subtilis is inoculated in the purifying pool regularly. The method uses the closed loop design, and employs the continuous slops in the young salamander pool and the grown salamander pool and the water pump to realize cycle pool ecology design; the cycle pool is good for the giant salamander to forage and move, the fish pond can serve forage for the giant salamander, and the purifying pool is used for putting in microbe flora so as to purify the water body; evidence show that the microbe flora can be put in so as to reduce water body nitrite concentration, thus obviously promoting giant salamander and forage fish growth.

The present invention provides an efficient culture method for mandarin fishes and crayfishes in a pond. The culture method comprises the following steps: a) pre-culture preparation; b) stocking and feeding of crayfishes; c) stocking of forage fishes of spotted silver carps / silver carps; d) stocking and feeding of Cirrhinus mrigala forage fishes; e) stocking and feeding of mandarin fishes; and f) water quality management. The present invention discloses an efficient culture method for mandarin fishes and crayfishes in the pond. The culture method is scientific and reasonable, and by breeding one-season crayfishes and culturing low-cost the Cirrhinus mrigala forage fishes in a special pond, the comprehensive utilization rate of the pond is improved, the yield is increased, and the culture cost is greatly lowered, so that a relatively high economic benefit is achieved.

The invention discloses a novel mandarin fish ecological breeding technology based on high yield. The novel mandarin fish ecological breeding technology based on high yield comprises the following steps: selecting addresses for constructing a main mandarin fish raising pond; sterilizing the main raising pond and introducing fresh water; arranging weed strips and weed regions in the main mandarin fish raising pond; selecting suitable forage fishes for mandarin fish fries; throwing mandarin fish fingerlings; soaking forage fish pellet feed with astragalus membranaceus and atractylodes macrocephala koidz leach solution; carrying out raising management and water quality management; preventing and treating fish diseases; and launching the fishes on the markets. The shortcoming that an existingmandarin fish raising method is low in efficiency and low in raising yield is overcome, the novel mandarin fish ecological breeding technology based on high yield is provided, the forage fish feed istreated by a disease and pest prevention and control means and Chinese herbal medicines, the problem that mandarin fishes are rich in drugs through a biologic chain is solved, and the raised mandarinfishes can pass severe drug residue detection; and a plurality of water-oxygen machines are added, the problems that the survival rate of the mandarin fishes is low due to oxygen deficiency, and thusthe yield is low are solved, and the yield and economic benefit of a mandarin fish pond are greatly increased.

The invention discloses a mandarin fish out-of-season culture method, and belongs to the technical field of aquaculture. The method includes the steps: (1) cleaning a pond to realize disinfection; (2) culturing forage fish; (3) culturing mandarin fish. According to the mandarin fish out-of-season culture method, by changing a traditional mandarin fish culture method and culture baits, curriculus is used as a bait, the mandarin fish out-of-season culture method adapting to curriculus bait feeding is developed, the problem that forage dace cannot live through winter in a later period of traditional mandarin fish culture in a northern area can be solved, a mandarin fish out-of-season culture mode of culturing the fish for multiple times in a year is creatively researched and developed, adult mandarin fish can selectively appear on the market in any time periods all year round including the following spring, any specifications of mandarin fish appearing on the market can be provided in different seasons, the requirements of different domestic markets are met, and economic benefits and market values of mandarin fish culture industry are remarkably improved.

The invention discloses an aquaculture forage fish cutter used for cutting two steel rollers which are 3cm in diameter and 60cm in length as shafts, sleeving cutter discs which are 12cm in diameter on the rollers, wherein the space between the cutter discs is 2cm and the cutter discs of the shafts are staggered and arranged side by side; one shaft is driven by a motor as a driving shaft, and the other shaft is driven by a gear connected with the driving shaft as a driven shaft; when the forage fish cutter is in use, the motor is started so that the driving shaft and the driven shaft rotate in opposite directions, and then forage fishes are fed in a feeding hopper, the downward cutting force is formed by the cutter discs on the two shafts, the forage fish cutters are taken into a cutting cabin and cut into fish sections of 2cm, and finally are discharged by a discharge hopper. Compared with an existing forage fish processing way, the problems that the aquaculture forage fish cutter provided by the invention is high in labor intensity and different in size and specification can be solved, the drawbacks of waste and water quality pollution can be prevented, and the labor efficiency can be improved by more than 20 times; furthermore, the cutter discs with different distances can be changed to cut the fish sections of the corresponding specifications.

The invention relates to feed processing equipment, and particularly relates to processing equipment of fish feeds for aquaculture use. The invention aims to solve the technical problem of designing aprocessing equipment of fish feeds for aquaculture use which is capable of uniformly mixing fish meal with forage fishes as well as enabling molding of the fish meal so as to ensure feeding effects of the fish feeds. The processing equipment of the fish feeds for aquaculture use comprises a base, a rectangular frame, a hopper, a barrel, an electric crushing roller, a driven crushing roller, a mixing roller, a belt wheel and the like; the rectangular frame is arranged at the top of the base; the hopper is connected with the top of the rectangular frame; the hopper is arranged at the top of thebarrel; the barrel respectively communicates with the rectangular frame and the hopper; and the electric crushing roller and the driven crushing roller are arranged at the lower part of the interiorof the hopper. According to the processing equipment of the fish feeds for aquaculture use, forage fishes are preliminarily crushed by a crushing device; and the preliminarily crushed forage fishes are thoroughly crushed by cooperation of the electric crushing roller and the driven crushing roller, so that extra crushing on the forage fishes by a mincer is not required. Therefore, fish feed processing cost is saved.

The invention provides a pollution-free sterilization type Leiocassis longirostris culture method. The pollution-free sterilization type Leiocassis longirostris culture method includes establishing a stereoscopic aquaculture farm and a sterilization system; establishing a recirculating aquaculture system in a bottom layer, namely arranging aquaculture wastewater purifying ecological ditches, a wastewater sedimentation pond and a purifying pond in the bottom layer; feeding Leiocassis longirostris on the bottom layer with forage fishes or aquatic insects cultured on the top layer, wherein a feeding proportion is controlled according to feeding dates and aquaculture water source temperatures; conducting daily management by selecting fresh water injection time and oxygenation time reasonably; conducting disease control. The pollution-free sterilization type Leiocassis longirostris culture method has the advantages that the stereoscopic aquaculture farm and the sterilization system are established, and aquaculture water is sterilized through a physical method, so that pollution of chemicals to the aquaculture water and secondary pollution caused by chemical intake of the Leiocassis longirostris are avoided; since the forage fishes or aquatic insects for feeding the Leiocassis longirostris are cultured with the Leiocassis longirostris, ecological environmental protection is achieved, and aquaculture efficiency is improved; the recirculating aquaculture system is used for recycling the aquaculture water source, and accordingly aquaculture cost is reduced.

The invention relates to a method for high-density culture of siniperca chuatsi in a flowing water pond. The method is a culture method based on a circular flowing water pond and is characterized in that an aeration oxygenation device is additionally arranged in the flowing water pond, a set of power generating equipment is additionally arranged to serve as temporary emergency electrical power supply equipment, and four meshes or blow of steel wire screens are arranged at an water inlet of the flowing water pond and at an water outlet of the flowing water pond respectively, so that siniperca chuatsi is prevented from escaping; 20 meshes of polyethylene nettings are arranged on the outer sides of the steel wire screens so as to prevent forage fish from escaping. The culture method comprises the steps that firstly, before fish fingerling stocking, a culture pond is disinfected; secondly, the forage fish is put into the pond at the density of 100 thousand to 120 thousand per pond; thirdly, siniperca chuatsi fish fingerling is put into the flowing water pond at the density of 20 thousand per pond, and Hypophthalmichthys molitrix and Aristichthys nobilis are put into the culture pond; fourthly, daily feeding adopts management of normality, and disease control is conducted in a mode combined the way that the forage fish has to be disinfected before being put into the pond with the way that a biological agent is periodically used. By means of the method, intensive cultivation of siniperca chuatsi is achieved, the fishing difficulty of commercial fish is further reduced, the aquaculture water surface is saved, and aquaculture waste water zero-discharge is achieved.

The invention relates to a safe efficient composite culture technology for siniperca chuatsi in aquaculture industry, and belongs to the technical field of agricultural aquaculture. An intercropping mode of forage fishes and soft-shelled turtles is used, and the method is used to solve problems of culturing siniperca chuatsi in ordinary freshwater environment in mid-latitude region environment. The technical scheme is that freshwater is used as culture environment, and culture water sources, water quality conditions, stocking density, and bait are configured according to basic requirements of siniperca chuatsi and forage fish growth, so as to culture siniperca chuatsi and forage fishes. Using the method can realize an objective of culturing siniperca chuatsi in wide mid-latitude regions, and the siniperca chuatsi which has high economical value can be produced artificially in large scale. The method is unique and easy to operate. Obtained adult fish is tender in meat, and abundant in nutrition. The method is suitable for wide popularization. While culturing siniperca chuatsi and forage fishes, soft-shelled turtles whose quality is close to wild are cultured, and economic benefit is substantial.

The invention discloses a control method of a sepia streptococcicosis. According to tThe control method provided by the invention, with an emphasis on prevention, high-quality feeder and appropriate breeding density are adopted in prevention, and the water bodies are disinfected at regular intervals; and when the sepia streptococcicosis breaks out, the manner of water bodies disinfection combined with feeding oral medication therapeutic drug is adopted for treatment. According to the control method provided by the invention, fresh forage fish or added vitamin complex fresh forage fish are used as a feedstuff, appropriate breeding density is adopted, and the water bodies are disinfected at regular intervals; the good water quality in a sepia culture process is ensured, thereby improving self-control ability and immunological competence; when the sepia streptococcicosis breaks out, an antibiotic is used to kill streptococci and is used for detoxifying antiphlogistic, meanwhile, a vitamin C and a vitamin B1 are added in an oral administration therapeutic drug formulation so as to improve a curative effect for curing the sepia streptococcicosis; and meanwhile, a water body disinfector is combined to carry out disinfection treatment on the water bodies and adjustment on water quality so as to obtain a good breeding environment, thereby reducing the generation of diseases.

The invention discloses a method for ecologically cultivating siniperca chuatsi, Chinese soft-shell turtles and pelteobagrus fulvidraco in the same pond. The method is characterized by comprising the following steps of (1) setting weed bands and weed regions, and inducing the propagation of forage fish; (2) selecting suitable forage fish for siniperca chuatsi fry; (3) putting siniperca chuatsi fry, Chinese soft-shell turtle fry and pelteobagrus fulvidraco fry in the pond; (4) cultivating drug residue-free forage fish; (5) dynamically feeding the forage fish; (6) dynamically putting snails in the pond; (7) enabling the pelteobagrus fulvidraco to control the generation of trichodinids and lernaea of the siniperca chuatsi; (8) cutting off a parasite transmission path of the forage fish through herbal medicine immersion; (9) preventing bacterial diseases of the siniperca chuatsi by the Chinese soft-shell turtles; (10) enabling the siniperca chuatsi, the Chinese soft-shell turtles and the pelteobagrus fulvidraco to come into the market in batches. The method disclosed by the invention has the advantages that the method is simple, and the operation is convenient; the forage fish suitable for the siniperca chuatsi fry can be easily obtained, and the cultivating survival rate of the siniperca chuatsi fry is obviously increased; the occurrence rate of parasites and the bacterial diseases of the siniperca chuatsi is obviously reduced, and the drug use is reduced; the siniperca chuatsi, the Chinese soft-shell turtles and the pelteobagrus fulvidraco are cultivated in the same pond, so that the water resource is saved, and the economic benefit is obviously increased.

The invention discloses a culturing method of squaliobarbus curriculus regarded as forage fish for out-of-season culturing of mandarin fish. The culturing method belongs to the technical field of aquaculture, and comprises the following steps of (1) pond cleaning and disinfecting; (2) culturing conditions; (3) summer flower culturing; (4) fingerling rearing. The method provided by the invention takes the lead in breaking through the key technology that live forage fish i.e. dace suitable for the later period of culturing of the mandarin fish cannot survive through the winter in Northern China, creatively provides the idea of regarding the high-yield cultured fishes i.e. squaliobarbus curriculus with high low-temperature resistant capacity as the forage fish for the later period of culturing of the mandarin fish, effectively ensures the supply of the forage fish for the mandarin fish to live through the winter and in later period of culturing from the following spring to August by an efficient culturing mode of putting fries in different months, thoroughly solves the problem of the restriction of insufficient and unwell supply of the forage fish suitable for the later period of culturing of the mandarin fish in winter in Northern China, and provides important forage fish guarantee for the out-of-season culturing of the mandarin fish.

The invention discloses a separated siniperca chuatsi breeding method in a pond. According to the separated siniperca chuatsi cultivation method, forage fishes and siniperca chuatsi bred synchronouslyin the same pond to grow, and the forage fishes in separated meshes are released one by one to be eaten by siniperca chuatsi in the growth period, so that engorgement of siniperca chuatsi is avoided.The siniperca chuatsi eats forage fishes regularly and are good in growth condition. In the growth period of the siniperca chuatsi, the palatable forage fishes are supplied continuously. The moving space of the siniperca chuatsi is expanded gradually. The breeding area of the forage fishes is reduced gradually. The total amount of living bodies in a breeding water domain is not changed rapidly, the environmental state is good, and the ecological growth demand of the siniperca chuatsi is met. By scattering the separated meshes one by one to supply the forage fishes, the labor intensity is reduced extremely, so that the survival rate of the forage fishes and the comprehensive utilization ratio of the pond are improved. The method is easy to operate, remarkable in effect and wide in application range, and has popularization value.

A preparation method of bait for feeding and catching fishes on the surface of breeding water. The bait is prepared from fish luring powder, a feeding stimulant for fishes, fish feed, a hunger promoting agent for fishes, a dispersing agent for fishes, buddleia powder, cornus officinalis powder, morinda officinalis powder, curculigo orchioides powder, tea litter powder, cynomorium songaricum powder, sweet potato powder, eucommia powder and paddy. The bait prepared by the preparation method can realize mass trapping, can be utilized for bait casting, has good trapping effects and high trapping rate, and can solve effectively problem that a mass of fishes are not be gathered on the surface of a broad water area, the surface of a wild water area and the surface of a water area with a complex landform.

The invention discloses a fish feed preparation process and a fish feed prepared by the same, and relates to the technical field of animal feeds. The fish feed preparation process comprises the following steps: S1, mixing materials: weighing fish feed raw materials, and uniformly mixing the fish feed raw materials to obtain a mixture; S2, crushing: crushing the mixture until the particle size is not greater than 100 microns to obtain mixed powder; S3, tempering: introducing water vapor into the mixed powder for tempering to obtain a tempered material; S4, puffing: puffing the tempered materialby using a puffing machine to obtain feed strips, and cutting the feed strips into particles with the particle size of 200-400 microns to obtain a wet material; and S5, drying: drying the wet material to obtain the fish feed. The fish feed preparation process has the advantage that the particle size of the fish feed particles is conveniently reduced. The fish feed prepared by the fish feed preparation process has the advantage of small particle size.

The invention discloses artificial compound stingray feed. The feed is characterized by comprising components in parts by weight as follows: 23-27 parts of stingray powder, 8-12 parts of white fish powder, 6-10 parts of shrimp powder, 4-8 parts of fermented soybean meal, 2-4 parts of feed yeast, 2-5 parts of corn gluten meal, 2-4 parts of spiral seaweed, 2-2.5 parts of soybean oil, 1 part of vitamin premix, 1 part of mineral premix, 2-2.8 parts of monocalcium phosphate , 0.3-0.4 parts of choline chloride (50% content), 5-7 parts of squid organ powder, 0.1-0.2 part of an enzymic preparation, 2-4 parts of carrageenan, 10-15 parts of alpha-starch and 12.5-16 parts of flour. The artificial compound stingray feed can replace forage fish, and is especially suitable for digestive physiology of stingrays, good in palatability, high in efficiency of feed utilization, and quick in growth rate; the artificial compound stingray feed solves the difficult problem that stingray cultivation depends on forage fish and artificial compound feeds cannot be used, so that cost on stingray cultivation is greatly reduced, and feeding becomes convenient and simple. The artificial compound stingray feed is a technological breakthrough.

The invention discloses a koi fish artificial breeding method, and relates to the technical field of aquaculture. The method comprises the following steps: building an infrastructure mainly comprisinga cement pond which comprises a breeding pond and a raising pond, a water circulation treatment system which comprises a pipe drawing chamber, a sedimentation chamber, a physical chamber, a biochemical chamber and a clear water sterilization chamber, and an earth pond; carrying out artificial breeding by sequentially carrying out broodstock selection, broodstock raising, spawning, fertilization and hatching; carrying out fish breed raising and selection to keep koi fish with good shapes, bright colors, well-proportioned patterns and elegant swimming postures; carrying out adult fish raising and wintering during a wintering stage from the end of October to the middle of next April, wherein koi fish is transferred to the cement pond for wintering, and feeding is stopped when the temperatureof water is lower than 16 DEG C; transferring fries to the earth pond after wintering; controlling diseases with manners such as disinfecting the cement pond and the earth pond; and catching and transporting the koi fish. With the breeding method provided by the invention, the raised adult koi fish are cream of the crop. The koi fish inherit the features of the original broodstock, and are classic and pure. The koi fish provide great ornamental value and good economic benefit.

The invention discloses a Liza haematocheila seawater pond circulating water fry breeding method, and relates to the technical field of fry breeding. The breeding method comprises S1, conducting construction of a net cage circulating water fry breeding facility and S2, performing net cage circulating water fry breeding management, wherein the S1 is further subdivided into a, building of a fry breeding net cage; b, performing installing of a submersible pump; c, light luring living organism baits; and d, performing installing of an inflation facility; the S2 is subdivided into e, performing pond equipment work; f, preparing living rotifers, feed and Liza haematocheila fertilized eggs: purchasing the living rotifers and the feed; g, performing fry hatching; h, performing fry period management; i, performing young fish period management and j, performing juvenile fish period management, wherein the sub-steps h, i and j all comprise day age and breeding density control, feed feeding and net cage replacement or cleaning. A fry breeding technical mode is provided according to the breeding characteristics and living habits of the Liza haematocheila fry. The method has the advantages of high density and strong controllability of a cement pond mode, low cost of a pond mode, easiness in popularization and the like.