32 results about "Tiaroga cobitis" patented technology

The invention provides an industrial loach breeding and fry culturing method and belongs to the field of aquaculture. The method includes industrial breeding and fry culturing workshop construction and a specific breeding and fry culturing method. The specific breeding and fry culturing method includes: arranging bi-layer open net cages in a cement pool in a breeding workshop, wherein inner net cages are rutting and spawning places for parents, and outer net cages receive eggs concentratedly; and arranging a plurality of open foam boxes in a hatching and fry culturing workshop, placing the eggs into the foam boxes after counting, feeding loach fries by micro initial feed after hatching to fries to enable the loach fries to live through an initial critical period to become strong fries, and selling the fries or placing the fries into a pond for large-scale fingerling rearing. A workshop production process is adopted, breeding and hatching and fry culturing environments are guaranteed effectively, operation is facilitated, working efficiency is high, fecundity can be measured accurately, fertilization rate reaches above 98%, hatching rate basically reaches 100%, fry survival rate basically reaches 100%, and survival rate of large-scale fingerling rearing by placing the strong fries into the pond reaches above 50%.

The invention belongs to the field of cultivation and particularly relates to a loach larva cultivating method. The method includes the following steps that firstly, breeding and oviposition are performed; secondly, eggs are put into an incubation pool to be incubated evenly, an oxygen boosting rod is placed beside the pool, the oxygen boosting rod is placed at the bottom of the pool after loach larvae get out of membranes, and the loach larvae are cultivated; thirdly, pond cleaning medicine is used for cleaning the pond, water filling and fertilizing are started three days later, and when the color of water of the pond is cultivated to be yellow green, the loach larvae are put into the pond; fourthly, before the loach larvae are put into the pond, the loach larvae are put into oxygen bags at first, the oxygen bags are put into the pool for buffering and then, the loach larvae are put into a net box; fifthly, milk powder and quail egg yolk are used as bait for feeding the loach larvae; sixthly, powder materials starts to be cast after seven to ten days. The rate of survival of the larvae cultivated with the loach larva cultivating method is improved to be more than 35%. By adjusting the position of the oxygen boosting rod, the density of the eggs can be adjusted, workloads are reduced, the cost in cultivating the larvae is reduced and economic benefits are boosted.

The invention is applicable to the technical field of aquaculture, and provides a net cage three-dimensional breeding method for ricefield eel and loach. The method comprises the following steps: configuring the facilities, equipment and net cages for a rearing pond and ricefield eel living environment in the net cages before breeding the ricefield eel and the loach; breeding the loach and the ricefield eel in the rearing pond and the net cages in sequence according to the survival growth habits of the loach and the ricefield eel; when the breeding of the loach and the ricefield eel is finished, performing breeding management operation, including food taming, daily feeding, water quality adjustment, daily management, and disease prevention and control, on the loach in the rearing pond and the ricefield eel in the net cages, so that the problems of the current intensive breeding mode are solved, aquaculture yield is improved, and breeding benefit is increased.

The invention provides a polyculture method for fishes, eels and loaches and relates to the technical field of agricultural culture. The method comprises the steps: before stocking loach, eel and fish fries, carrying out collocation on culture pond environment, net cages and internal living environments of the net cages; sequentially stocking the loach and fish fries in culture ponds and then stocking the eel fries in the net cages according to living and growing habits of the loach, eel and fish fries; when the loach, eel and fish fries are subjected to stocking completely, carrying out feeding management operations, including daily feeding, daily management and disease control on the loach and fish fries in the ponds and the eel fries in the net cages. According to the polyculture method for the fishes, eels and loaches, problems in the current intensified culture mode are solved, the yield of culture is increased, and the benefit of culture is improved.

The invention discloses a loach larva breeding method. The method includes the following steps of: breeding pond construction; breeding pond disinfection; larva stocking: after being rejuvenated for 10 minutes, larvae are thrown into a breeding pond, and stocking density is 10 thousands larvae / m<2>; breeding pond management: baits are thrown into the breeding pond from 8:00 to 9:00 in the morning, 12:00 to 1:00 at noon and 5:00 to 6:00 in the afternoon every day; water quality management: water in the breeding pond is changed daily; pond disinfection: a pond is disinfected with quicklime of 50kg / mu; larva delivery: after being cultivated in the breeding pond for 6 to 10 days, the larvae are thrown into the pond, and stocking density is 200 thousands larvae / m<2>; and pond management: after the larvae are stocked in the pond, the larvae are fed with mixed feed, the feeding amount of the mixed feed in the summer and winter is 1 to 3% of the total weight of the loaches, and the feeding amount of the mixed feed in the spring and the autumn is 5 to 10% of the total weight of the loaches. With the method of the invention adopted, large-scale industrial production of loaches can be realized.

A method for mixing loach and crucian carp in paddy fields comprises the following steps: selection and treatment of paddy fields, planting of rice seedlings, feeding of loach seedlings and crucian carp seedlings, feeding of feed and fertilizer, paddy field management, and prevention of pests and diseases. The breeding method of the present invention utilizes water areas rationally, can utilize loach and crucian carp to help eliminate the pest of paddy field, and the excrement of loach and crucian carp can be used as the fertilizer of rice again, and some plant fragrances that rice grows distribute can improve the meat quality of loach and crucian carp again, Using the cultivation method of the invention can reduce the usage of chemical fertilizers and pesticides, does not damage soil fertility, can increase rice production by 5-8%, and meanwhile, the yield of loach and crucian carp is improved compared with the normal cultivation method.

The invention relates to a tilapia and loach mixed-pool-breeding method. A tilapia breeding pool is selected and is disinfected through quick lime after water in the pool is drained out in March every year, and after the water temperature is stabilized at 20 DEG C, 1,800 to 2,000 single male tilapia over-wintering fry with the weights ranging from 20 grams to 25 grams are thrown into the pool every 667 square meters, and 20,000 loach fry with the lengths ranging from 3 centimeters to 4 centimeters are thrown into the pool 30 days later. By means of food training, tilapias and loaches are fed in different feeding areas. Special mixed feed is thrown to feed the tilapias and the loaches two times everyday. After being bred for four to five months, the tilapias are caught in advance to be sold, the pool breeding density is decreased, and the growing period of the loaches is prolonged. The technology that the tilapias and the loaches are fed respectively in the same pool is adopted, rational combination is carried out according to the life habits and the feeding habits of the tilapias and the loaches, the aquatic water space is fully utilized, the bred marketable fishes are large in size and good in quality, and the purposes of promoting growth, increasing production and efficiency and improving benefits are achieved.

The invention relates to the technical field of cultivation and discloses a rice and loach polyculture method. Two to ten mu of ridges serve as one unit. The rice and loach polyculture method includes the following steps of building the ridges, laying a sky net and a ground net, applying organic fertilizer, planting rice, stocking loaches and throwing feed. The rice and loach polyculture method is environmentally friendly and easy to operate, produced rice does not contain pesticide residues and thus the rice and loach polyculture method has application prospects. The loaches raised with the method can loosen soil in the rice filed, and thus manpower resources are saved. Because the sky net and the ground net are arranged, ospreys, egrets, night herons, snakes, mousse and other natural enemies are prevented from damaging the rice and the loaches.

The invention discloses a separation method of fries and roes after hatching of loach fertilized roes, which relates to a loach fertilized roe hatching technology and comprises the following steps: (1) carrying out separation when mostly of or all loaches break through a membrane; and (2) adding a proper amount of trypsinase in a fry culture water body. The separation method quickly dissolves roemembranes and necrotic roes, prevents the roe membranes and the necrotic roes from winding fries, reduces the mortality rate of the fries, quickly separates the fries from other sundries, saves the labor time, improves the survival rate of the dries, reduces the consumption of the roe membranes and the necrotic roes on dissolved oxygen in the water body, keeps dissolved oxygen in water body adequate, reduces the labor consumption of the fries in the hatching process and improves the labor efficiency.

The invention discloses a method for culturing a loach fry into a summer fry. According to the method, during the front period and middle period of summer fry culture, when the whole length of the loach fry is less than 2.0cm, oxygenation is carried out in a culture pond at night from 24 p.m to 5 a.m of the next day, so that the content of the dissolved oxygen in culture water in the culture pond is maintained to be above 4.0mg / L; and during the later period of summer fry culture, when the whole length of the loach fry is greater than 2.0cm, the oxygenation is carried out in the culture pond at night from 22 p.m to 7 a.m of the next day, so that the content of the dissolved oxygen in the culture water in the culture pond is maintained to be above 3.0mg / L. Experiments prove that the culture survival rate of the loach summer fry obtained by the culture method disclosed by the invention is above 60%, and an unexpected technical effect can be obtained.

The invention discloses a nursing breeding method for young loaches. The nursing breeding method includes the steps that 1, a proper young loach breeding pond is selected, water entering and water draining are convenient, and the area should range from 3 mu to 5 mu; 2, the loach breeding pond is divided into regions, wherein the area of the nursing region accounts for one third of the total area of the breeding pond, and the area of the bait organism breeding region accounts for two thirds of the total area of the breeding pond; 3, cement hardening is carried out on the nursing region, wherein cement hardening is carried out on the pond bottom and the protection slope of the nursing region; 4, the pond is cleaned and sterilized, sterilizing is carried out through bleaching powder at the time five days before the young loaches are put into the pond, and trash fishes, roes, aquatic insects, frog eggs and the like in the young loach pond are eliminated; 5, fresh water is injected after pond cleaning, the water depth is required to be 50 cm, and organic fertilizers are applied after water injecting to breed bait organisms; 6, the young loaches are put into the pond and put into the nursing region; 7, blocking nets are removed at the time two weeks after the young loaches are put into the pond, and the young loaches are distributed to the whole breeding pond; 8, the loaches are trained to eat artificial feed after the young loaches are bred for one month, and the adult loach breeding stage starts. The method is easy to implement and easy and convenient to operate, the loaches can safely live through the weakest external gill stage, and the breeding survival rate of the young loaches is remarkably increased.

The invention relates to a fishing device, in particular to a fishing device for breeding loaches. The technical scheme aims to provide the loach breeding fishing device which can save time and automatically separate the loaches according to the size. In order to achieve the technical purpose, the provided fishing device for breeding the loaches comprises a bottom plate, a support plate, a material discharge hopper, a rear side plate, a material loading box, a hose and the like, wherein the support plate is installed on the left of the top of the bottom plate, the material discharge hopper isinstalled on the right side of the support plate, and the rear side plate is mounted on the upper part of the right side of the support plate; a lifting device is arranged on the right of the upper side of the rear side plate, the material loading box is arranged on the lifting device, and an opening is formed in the right side of the material discharge hopper; and a net frame is placed in the material discharge hopper. The fishing device is driven to move up and down by the lifting device, the loaches in a breeding pool can be fished through the fishing device, and through further arrangementof a driving device, the loaches can be screened automatically, so that effects of time saving and automatic separation of the loaches according to the size are achieved.

The invention discloses a method for planting grass at the bottom of a pool to cultivate loach fries. Methods of interval sowing at the bottom of the pool and step-by-step barnyard grass submergence are utilized to cultivate bait of the loach fries step by step, and attachments are provided for the loach fries at the same time, and the breeding environment change and fry growth need to be synchronously conducted. The method mainly includes the steps that the loach fry cultivation pool which is suitable for grass planting is selected; 40-50 days before the loach fries are placed into the pool, barnyard grass seeds are sown at the bottom of the pool at intervals block by block, the sowing area accounts for 50-60% of the area of the bottom of the pool, and the sowing amount is 1.5 kilograms / 667 square meters; 10 days before the loach fries are placed into the pool, 50cm fresh water is added to the pool for barnyard grass submergence, and quick lime is placed into water for sterilization and promoting barnyard grass to be decomposed to cultivate protozoa and rotifers; 150,000-20,000 loach (fries) sprays are placed into the pool per 667 square meters; step-by-step watering adding and barnyard grass submergence are conducted, namely, after the loach fries are placed into the pool for 5-7 days, 20cm fresh water is added according to the water color condition of the pool, after the loach fries are placed into the pool for about 15 days, 20cm fresh water is added again, and after about 10 days, the barnyard grass is decomposed, the loach fries grow into 4-5cm large-size fish fries, and then the adult loach feeding stage is conducted.

The invention discloses a mixed culture method for grass carp and loaches. The mixed culture method includes the steps of: dredging and disinfecting a culture pond, hardening the pond bottom, protecting the pond walls, paving bottom mud, planting water plants, reducing ammonia nitrogen level, putting the grass carp and the loaches; and therefore, the mixed culture mode of the grass carp and the loaches is achieved, the vertical space of the culture pond is reasonably utilized, and the utilization efficiency of the cultural water is improved; the water plants and land plants are reasonably planted, thus being capable of providing enough bait for the grass carp, and saving the cost for putting feeds; the loaches exist in the lower-layer space of the culture pond, thus playing a role in loosening cultural bottom mud and accelerating the growth of the grass carp; and humus can be used, which plays a role in purifying the water.

The invention discloses a mud fish fry breeding method. The method comprises the following steps of (1) injecting non-polluting water into a soilless breeding pond in a greenhouse, and putting in weeping willow branches; (2) 20-30 days after putting in the weeping willow branches, putting in mud fish fry and placing ricefield eels the next day. The method has the advantages of convenient materialobtaining, easy water quality regulation, convenient fishing, less mud fish pests and diseases, high fry survival rate and the like.

The invention provides a loach breeding and hatching floating bed. The bed comprises a supporting plate, a stand pillar, a base frame, floating cylinders, locating grooves, a hatching basket, a light-shielding window, a driving motor, a photoconductive sensor, a controller, a water circulating pump, a transmission, a circulating water inlet, and oxygenation holes, wherein the supporting plate is supported over the base frame through the stand pillar; the light-shielding window is installed in the middle of the supporting plate, and the light-shielding window is connected with the driving motor through the transmission; the floating cylinders are installed at the two ends of the base frame through the locating grooves; the photoconductive sensor is connected with the controller through a signal line, and the controller is connected with the driving motor. In the loach breeding and hatching floating bed, through the arrangement of the photoconductive sensor, the controller, the light-shielding window and the water circulating pump, it is beneficial to adjustment of the temperature and light of a loach hatching environment, the circulating water environment is provided, the hatching efficiency is improved, and market popularization and application are conveniently conducted.

The invention discloses a soilless loach breeding method. A breeding pond is established, a layer of river sand is laid on the pond bottom, a water inlet and outlet pipeline is arranged in the pond, the depth of water in the pond ranges from 30 cm to 60 cm, water hyacinth, ampullariagigas and the like are planted in water, and some planktons are cultivated in water. The soilless loach breeding method has the advantages that loach inhabits in fine sand, the catching efficiency is high during selling, the taste of the loach is better than that of the loach bred in mud, the breeding density is larger than that the loach bred in the mud by four times, and the length of the large loach incubated in spring can reach 15-16 cm at the end of the year in the pond built through concrete.

The invention relates to an eel and loach slaughtering machine which belongs to the field of an aquatic product processing machine. The eel and loach slaughtering machine is formed by a rack, a feeding barrel and a slaughtering device, wherein the feeding barrel is mounted at the one end of the rack and the slaughtering device is arranged at the other end of the rack; the feeding barrel and the slaughtering device are movably connected through a feeding hose and a hose clamp; and the slaughtering device is provided with a protection cover. The eel and loach slaughtering machine disclosed by the invention adopts a feeding roller to randomly grasp and convey eel and loach, the slaughtering speed is high, the slaughtering requirements on eel and loach with different sizes can be met, and the frequent problems that some eel and loach are not correctly slaughtered or are not slaughtered when an existing slaughtering machine is used for slaughtering eel and loach with different sizes are solved. When the eel and loach slaughtering machine disclosed by the invention is used for slaughtering eel and loach, eel and loach do not need to be classified according to specifications and sizes in advance, so that the labor intensity of workers is reduced and the working efficiency is improved; and eel and loach can be slaughtered from abdomens or from backs through the selection connection between the feeding hose and a back cutting supporting plate and between the feeding hose and an abdomen cutting supporting plate, and furthermore, the requirements on deep processing of eel and loach can be met.

Disclosed is a loach breeding pool. The loach breeding pool comprises sludge and a floating slab; an outer wall body is arranged at the bottom of the breeding pool body, and an inner wall body is arranged inside the outer wall body; a seepage-proofing layer is installed between the outer wall body and the inner wall body, and a thermal insulation pipe is installed inside the inner wall body; a discharging opening is formed in the bottom of the left side of the breeding pool body, and an end cover is installed at the end of the discharging opening; a water injecting opening is formed in the top of the right side of the breeding pool body, and an end cover is installed at the end of the water injecting opening; a flood-releasing pillar is arranged in the center of the breeding pool body, and a protection net is installed inside the top of the blood-releasing pillar; habitation boxes are installed and placed at the left side and the right side of the bottom of the inner wall body, and the sludge is placed at the bottom of the inner wall body. In the loach breeding pool, the floating slab is arranged and is beneficial to sunshading of the habitation boxes through cultivated plants, the root systems of the plants play an effect of purifying and oxygenizing clear water, and the plants can also be utilized as feed and are green and healthy, the space of the water surface is effectively utilized, the utilization rate of the breeding pool body is increased, and the cost is lowered.

The invention provides a bionic loach breeding device and a loach breeding method. The bionic loach breeding device comprises a breeding barrel, an incubation larva culture barrel, a flow supply pipeand a larva gathering pipe, the lower end of the incubation larva culture barrel is connected with the larva gathering pipe, the upper flow supply pipe is overlapped at the edge of the open end of theupper end of the breeding barrel, one end of a diversion pipe is communicated with the upper flow supply pipe while the other end of the same extends into the breeding barrel along the inner wall ofthe same, and multiple diversion holes are formed in the upper portion of the outer wall of the diversion pipe. The loach breeding method includes: releasing male loach parents and female loach parents proportionally, raising loach larvae in the breeding device, and collecting the loach larvae from the larva gathering pipe. By adopting the technical scheme, spawning and hatching of loaches are centralized in a same special device, so that production cost of the breeding device is lowered greatly, breeding period is shortened, labor intensity of artificial breeding is lowered, parent death rateis lowered, loach larva culture survival rate is increased, and breeding efficiency is improved.

The invention discloses a pond for artificially culturing misgurnus anguillicaudatus, and relates to the field of aquaculture. The slope-protected pond is 2,000-3,000 square meters in area and is rectangular, the length-width ratio is 2:1 or 3:2, the pond depth is 80-150 centimeters, and the thickness of sludge at the bottom of the pond does not surpass 30 centimeters; the bottom of the pond inclines towards a water outlet, a fish pit connected with the water outlet is arranged, is 5 percent the area of the bottom of the pond and is 30 centimeters lower than the bottom of the pond; a water inlet is formed 20 centimeters below the bank surface of a pond bank, and the bank surface of the pond bank is 150 centimeters in width; the water inlet is made of a PVC (Polyvinyl Chloride) pipe, and is 30-40 centimeters in diameter; a filter screen which is made of dense screen cloth and is used for intercepting pests is arranged on a pipe orifice; the water outlet is formed in the bottom of the fish pit at the bottom of the fish pond obliquely opposite to the water inlet; a gate valve is arranged at the water outlet close to the pond bank; an escape-proof net is arranged. In the pond for artificially culturing misgurnus anguillicaudatus provided by the invention, a medicinal soil layer is paved, and a blended Chinese medicinal composition can be used for inhibiting and killing major pathogenic bacteria of misgurnus anguillicaudatus and has good prevention and control effects on bacterial diseases of misgurnus anguillicaudatus; the medicinal soil layer and clay are blended, the pesticide effect can be released out slowly after contact with water, and the clay has the effect of controlling the release of the pesticide effect.

The invention discloses a breeding method for loach through net cages. The breeding method includes the steps that the net cages are manufactured, wherein rectangular cage bodies are made of net cloth; the net cages are placed in a pond in lines and rows, the adjacent net cages in each line are fixed through timber piles, and the interval between two adjacent lines ranges from 40 cm to 80 cm; water hyacinth and water duckweed are planted in each net cage, loach fry are disinfected for 5-10 minutes through a 1.5%-3.5% saline solution, during first three months after the loach fry are placed, bait is fed, since the fourth month after the loach fry are placed, mixed feed is fed, the mixed feed is fed a time at 8-9 o'clock every morning and 5-6 o'clock every afternoon respectively, and the quantity of the mixed feed fed each time is 1%-5% of the weight of the loach fry in the net cages. The breeding method has the advantages that large-scale loach breeding is achieved, the loach can be easily caught, the survival rate and resistance of the loach are increased, and the probability that the loach is infected by parasites is reduced.

The invention discloses a fertilizer for a loach fry rearing pond. The fertilizer is prepared from the raw materials in parts by weight: 70-80 parts of macroelement fertilizer, 20-40 parts of fermented cassava residue, 15-25 parts of decomposed pig manure, 2-6 parts of fishbone dust, 1-6 parts of peanut shell powder, 3-8 parts of coal gangue, 1-2 parts of zeolite powder, 0.1-0.6 part of quartz sand, 0.2-0.6 part of sodium molybdate, 0.1-0.2 part of zinc borate, 0.1-0.3 part of manganese humate, 1-2 parts of plant growth conditioner, 0.01-0.06 part of bacillus subtilis, 0.01-0.08 part of bacillus licheniformis and 2-6 parts of antibacterial coating agent. The fertilizer is uniform in granule and good in bonding action, the attachment of microbial inocula is facilitated, the release of the fertilizer is decelerated, the loss of the fertilizer is reduced, the increase of organic matter content of pond mud is greatly facilitated, and the water quality of the pond is not changed obviously;aquatic plants at the bottom of the pond are good in growth vigor, and thus, a good ecological environment is provided for the growth of loach fries.

The invention discloses an artificial spawning induction and loach fry breeding method and belongs to the field of breeding. The artificial spawning induction and loach fry breeding method comprises the five steps that a spawning and hatching pond is prepared, and an overflow discharging device is arranged at the bottom of the spawning and hatching pond; water is injected into the spawning and hatching pond, water temperature in the spawning and hatching pond is kept at 15-25 DEG C, the wall of the pond is flushed to be clean after disinfection is performed for 2-4 hours and the water is discharged out, a plurality of spawn and fry collecting boxes, a plurality of spawning nets and an oxygen supplanting machine are arranged in the spawning and hatching pond, and clean water is injected into the pond. The artificial spawning induction and loach fry breeding method has the advantages that the method is simple in operation, high in spawning induction efficiency and high in loach fry yield, loaches grow and develop well and are high in uniformity, and the demand for a large number of loach fries can be met through artificial breeding.

The invention relates to a loach fry breeding method. The method includes the following steps that in April in spring, when the temperature of a natural water body is 18 DEG C or above, mature loaches which are regular in shape, strong in physique, much in mucus, healthy and free of wounds are selected as parents; after oviposition of the mature loaches, hatching is conducted at the water temperature of 25 DEG C, and after loach fry hatching is completed and yolk sacs of most loach fry almost disappear, the loach fry are fed with initial feed, wherein the initial feed is prepared from, by weight, 36.0-37.0 parts of crude protein, 8.0-9.0 parts of fat, 15.5-16.0 parts of ash and 11.0-13.0 parts of water; after the loach fry are bred for 7 days, the loach fry are transferred into a pond and bred through a conventional summer breeding technology. Compared with the prior art, the method completely meets energy requirements of loaches, remarkably improves the digestive ability of intestinal tracts of the loaches, promotes growth, remarkably improves organism immunity of the loach fry, and increases the survival rate.

The invention discloses a method for cultivating loach larvae by arranging net cages in a pond to improve the rate of survival. The method mainly comprises the steps that firstly, the pond which is appropriate in area and water depth is selected, water is injected into the pond to clean and disinfect the pond, and palatable bait is prepared; secondly, the net cages with the total area being 10% of the area of the pond are arranged inside the pond, wherein each net cage conforms to the standard of (5-8)m*1m*0.7m, the net mesh is 60, the net cages are evenly arranged along the long edges of the pond in a multi-line and two-row mode, and the cage bottoms are close to the bottom of the pond but not make contact with the bottom mud when the net cages are fixed; thirdly, four submerged pumps are installed at the four corners of the pond, and pond circulating small-flow water is formed by adjusting the direction of a water outlet; fourthly, loach larvae are thrown into the net cages according to the demand of 2250-3000 loach larvae per square meter, the submerged pumps are started, and wheel animalcule and other palatable bait enter the net cages along water flow to be eaten by the loach larvae; fifthly, unobstructed exchanging of water inside and outside the net cages is guaranteed, and the bait is thrown into the net cages in due time to ensure adequate bait; sixthly, the loach larvae are moved out of the net cages when growing to be 2 centimeters long, the net is dragged out, aquatic insects in water are removed, then the loach larvae are moved to the pond to be bred, the bait is thrown into the pond in due time, and the loach larvae are bred to be larvae being 4 centimeters to 5 centimeters long.

The invention discloses a special artificial compound feed for young loaches. The special artificial compound feed comprises the following raw materials in parts by weight: 80-90 parts of a vegetableprotein additive, 40-60 parts of turmbicula akamushi powder, 10-20 parts of silkworm chrysalis meal, 20-30 parts of scallop skirts, 8-16 parts of dried marine algae powder, 17-23 parts of a plant filling, 0.8-1.4 parts of astragalus polysaccharide, 0.2-0.4 part of garlicin, 2-4 parts of soybean phospholipid oil, 2-5 parts of a Chinese herbal medicine additive, and 4-8 parts of a mineral replenisher, wherein the Chinese herbal medicine additive comprises the following components in parts by weight of 50-60 parts of dried orange peel, 15-25 parts of Albizia, 8-16 parts of villous amomum fruits,8-14 parts of wrinkled gianthyssop herbs, 15-21 parts of pomegranate rinds, 10-20 parts of dandelions, 6-14 parts of frankincense, 3-7 parts of haws, and 15-25 parts of Chinese yams. The special artificial compound feed is comprehensive and balanced in nutrients and low in cost, so that the young loaches easily adapt to breeding environment and are high in immunity, the loaches have the characteristics of being natural in body color, healthy in fish bodies and high in growth rate.

The invention relates to a tilapia and loach mixed-pool-breeding method. A tilapia breeding pool is selected and is disinfected through quick lime after water in the pool is drained out in March every year, and after the water temperature is stabilized at 20 DEG C, 1,800 to 2,000 single male tilapia over-wintering fry with the weights ranging from 20 grams to 25 grams are thrown into the pool every 667 square meters, and 20,000 loach fry with the lengths ranging from 3 centimeters to 4 centimeters are thrown into the pool 30 days later. By means of food training, tilapias and loaches are fed in different feeding areas. Special mixed feed is thrown to feed the tilapias and the loaches two times everyday. After being bred for four to five months, the tilapias are caught in advance to be sold, the pool breeding density is decreased, and the growing period of the loaches is prolonged. The technology that the tilapias and the loaches are fed respectively in the same pool is adopted, rational combination is carried out according to the life habits and the feeding habits of the tilapias and the loaches, the aquatic water space is fully utilized, the bred marketable fishes are large in size and good in quality, and the purposes of promoting growth, increasing production and efficiency and improving benefits are achieved.

The invention discloses a separation method of fries and roes after hatching of loach fertilized roes, which relates to a loach fertilized roe hatching technology and comprises the following steps: (1) carrying out separation when mostly of or all loaches break through a membrane; and (2) adding a proper amount of trypsinase in a fry culture water body. The separation method quickly dissolves roemembranes and necrotic roes, prevents the roe membranes and the necrotic roes from winding fries, reduces the mortality rate of the fries, quickly separates the fries from other sundries, saves the labor time, improves the survival rate of the dries, reduces the consumption of the roe membranes and the necrotic roes on dissolved oxygen in the water body, keeps dissolved oxygen in water body adequate, reduces the labor consumption of the fries in the hatching process and improves the labor efficiency.