253results about How to "Increase breeding density" patented technology

The invention relates to a method for high-density industrial culture of blood-sucking leeches, which belongs to the technical field of artificial culture of the blood-sucking leeches. The culture method cultures commercial leeches artificially by the steps of selecting a place, building a pond, putting leech seeds into the pond, feeding the leech seeds, preparing cocoon producing beds, producing cocoons and hatching the cocoons, culturing young leeches, living through the winter and the like, and achieves recirculation culture by the steps of producing the cocoons and hatching the cocoons. In the culture process, when the reproduction rate of the cultured leeches goes down after three generations of close breeding, the cultured leeches are mated with wild leeches to achieve the aim of the rejuvenescence of parent leeches. The culture method solves the problems that the changes of the natural environment and the increment of pollutant sources make naturally-growing leech sources decrease day by day and the gradually expanded market demand cannot be satisfied. The culture method for culturing the leeches has less investment but high production. The input of 100 kilograms of the leeches can yield 200 kilograms of the commercial leeches. The culture method can culture the leeches not only by building large vinyl tunnels and ponds, but also by using rural homesteads, yards or vacant houses for building the ponds, and has good economic benefits.

An automatic indoor culture system for aquatic products features that the culture pool is stepped for staged cultures, the water for culture is treated by a circulating water treating system, the water quality is monitored and the optimum state is controlled by a water monitor system, and beside, the bait is uniformly distributed by an overlead moving throwing equipment. Its advantages are high density and quality, high survival rate and high output.

The invention discloses a high-yield culture method of Thai Bink No.3 earthworm, which comprises the following steps that: earthworms are put inside a culture base stock, the earthworms and the culture base stock are completely separated from each other every 15 to 20 days, and the earthworm cocoon is put in the culture base stock; new culture base stock is added, so the earthworms continue to lay eggs, and the nutrition liquid is continuously added; and all earthworm cocoons are discharged at a heat-preservation place to be incubated, the moisture content in the culture base stock accounts for 55 to 75 percent (weight), and young earthworms which are incubated from the earthworm cocoons are separated to culture every 8 to 12 days. The high-yield culture method has the advantages that the breeding speed of the earthworm is fast, the pH value resistance range of the earthworm is large, the disease resistance is strong, and the yield is high.

The invention discloses a manufacturing method of Chinese caterpillar fungus, which is characterized by the following: establishing greenhouse booth moth culturing field according to culturing temperature and moisture; reducing the danger of natural enemy of moth to accelerate weak plant root of herb and bush; releasing certain quantity of moth fertilized ovum, larva, pupal or and imagine in the culturing field; elevating moth larva breeding density with 110-3500000 per hectareha; breeding the moth from one year to 6-8 years within 365-425d; forming sac fungus; collecting 530000-1570000 Chinese caterpillar fungus per hectareha.

The present invention provides high density upflow shellfish larva cultivating device and method. The cultivating device is one barrel with cylindrical upper part and conic lower part, and has bait and sea water canal inserted from the top into the bottom, filtering drum with outside thin silk net in the upper part, draining pipe with one end connected to the filtering drum and the other end stretched outside, and ventilation pipe introduced from the tip of conic part and with airstone connected. The cultivating method features the density of type-D shellfish larva 140-160/ml, bait adding amount of 5000-15000 cell/ml.day, water flow amount of 7-10 times/day, and ventilation amount of 2-4 L/min. The present invention has raised cultivation density and survival rate.

The invention relates to an energy-saving factorized fully-sealed seawater circulation culture process method and a special device of the process method. Water in a culture pool is subjected to eddy current separation and solid-liquid separation and then enters a buffer regulation pool, the water enters two stages of biological purification pools: the front biological purification pool and the back biological purification pool after air floatation reaction purification, a biological filter pool self maintenance inoculation avoidance is carried out, and backflow water is respectively led out from water outlet ends of the two stages of biological purification pools and enters a circuit system. Rest water flown out from the back stage biological purification pool is subjected to the third-stage biological filtering, is then subjected to disinfection treatment, enters a water quality terminal optimization pool and finally flows to the culture pool to form a fully sealed circulation water culture system. The heat loss is avoided to a great degree through the adopted circulation water culture, so the water change (circulation) quantity can be increased, and the water freshness is improved. Compared with the traditional water flowing culture process, the process method has the advantages that the water and the energy are saved, and the discharge quantity of waste water and waste gas is reduced.

The invention provides a stormproof dual-net wall close type net cage, and belongs to the field of aquaculture net cages. The stormproof dual-net wall close type net cage comprises a net cage frame, an aquaculture net is hung on the net cage frame, and the net cage frame is uniformly connected with connecting arms, an outer layer aquaculture net and an inner layer aquaculture net are suspended on the connecting arms, and the inner layer aquaculture net is sleeved in the external layer aquaculture net; water supply equipment is arranged on the net cage frame, a lift pump is arranged on the water supply equipment, and a water pumping pipe of the lift pump extends into the seawater out of the net cage; a water outlet of the lift pump is connected with a water inlet pipe, the water inlet pipe extends into the net cage; the water outlet is arranged on the water inlet pipe, and the water outlet and the net cage frame tangent line at a corresponding position thereof present an angle at 30 degree; the bottom of each of the outer layer aquaculture net and the inner layer aquaculture net is connected with a dirt collecting device, thereby effectively avoiding the conditions that the fish in the net cage is injured due to larger storm and the net cage is damaged in the large storm, and the water body exchange capacity is strong.

The invention relates to an intensive ecological culture method for trachidermus fasciatus. The intensive ecological culture method specifically includes the steps of culture pond preparation, biological film fish nest distribution, biological film culture, pond ecosystem establishment and pond ecosystem maintenance. The intensive ecological culture method for the trachidermus fasciatus overcomes the shortcomings of low trachidermus fasciatus culture density, high death rate, low growth speed, waste of water, ponds and manpower resources and the like in existing trachidermus fasciatus culture.

The invention discloses a three-dimensional culture method for soft shell crayfishes in indoor circulating water and belongs to the field of aquatic product culture. Culture equipment and a culture method are provided. The culture equipment comprises a culture box, a goods shelf, a biofilter, a water storage pond, a circulating water pump, an aquaculture thermostat, an aerator, a light supplement lamp and a monitoring camera; and the culture method comprises the steps: preparation before stocking, fry stocking and daily management. The indoor culture is not affected by seasons and weathers, so that the soft shell crayfishes can be supplied all the year round; the culture box can realize microporous aeration by a bottom interlayer to supply oxygen to be saturated, so that not only is the demand of high-speed growth of the crayfishes met, but also the problem that the crayfishes get ill is solved; the aquaculture thermostat is used for setting an optimal temperature for the growth of the crayfishes, so that the crayfishes grow rapidly; the crayfishes live in a single room, so that the phenomenon that the crayfishes kill each other can be avoided, and the culture density and the molting rate are increased; due to the adoption of the monitoring camera, the labor intensity of working personnel can be reduced, and high-quality soft shell crayfish products can be obtained; and the method can also be used for crayfish culture.

A method for incubating the planktonic shellfish and culturing its larvae includes collecting its fertilized ova along with their attachments, hanging them from a supporting frame for development, transferring them in netted case, inculating in flowing water while aerating, and culturing their larvae in flowing water while aerating.

The invention relates to a healthy breeding method of Ietalurus punetaus. The healthy breeding method comprises the following steps: (1) selection of a culture pond; (2) repairing and maintaining of the culture pond; (3) disinfection and pretreatment of the culture pond; (4) taming of fish fries: selecting juvenile Ietalurus punetaus with healthy body surface, normal food intake and body weight of 120+/-5 g as the fish fries, placing the juvenile Ietalurus punetaus in a net cage, feeding the juvenile Ietalurus punetaus with an immunological enhancement bait special for Ietalurus punetaus, taming the juvenile Ietalurus punetaus for 30-45 days until the juvenile Ietalurus punetaus adapts to the fed bait; (5) cage-free breeding of the juvenile Ietalurus punetaus: breeding the juvenile Ietalurus punetaus well tamed in the step (4) in a cage-free manner in the culture pond treated in the step (3) with the released density of 22-25 thousand/mu; (6) culture management: with the concentration of dissolved oxygen being 7.5 mg/L or above, carrying out mechanical oxygen enhancement 2-3 times a day, 2-3 hours each time, keeping the pH value at 7.5-8.0, feeding the immunological enhancement bait special for Ietalurus punetaus according to the proportion that the feeding dosage accounts for 5-8% of the weight of the juvenile Ietalurus punetaus bodies, and replacing 1/3 of water in the culture pond each month. The healthy breeding method of Ietalurus punetaus has the advantages that the breeding density is high, the growth rate is high, the culture cycle is shortened by 15-20% as compared with that in the prior art, the disease incidence rate is reduced, and the economic benefits are high.

The invention relates to a method for high-density net cage monopterus albus breeding in a vinyl house and belongs to the technical field of fishery science application. The method is characterized in that a breeding net cage, a micro flowing water system and a temperature rising facility used at low temperatures are arranged in the built vinyl house so that the water level and the water temperature in a breeding system can be maintained 0.5-0.8 m and 25-28 DEG C respectively, and monopterus albus can be bred in the breeding net cage. The put volume of fries of the monopterus albus is 5-6 kg/m<2>, feed feeding the monopterus albus is a feed mixture of animal feed and compound feed special for the monopterus albus, and the feed amount a day is 8-12 percent the weight of the monopterus albus in the net cage. According to the method for high-density net cage monopterus albus breeding in the vinyl house, high-density breeding of the monopterus albus can be achieved, the breeding time of the monopterus albus is prolonged by five months or more each year, the survival rate of the monopterus albus is more than 95 percent, compared with a pond net cage breeding manner, the yield per unit area is improved by 5-8 times, and the method has the advantages that the breeding density is large, the monopterus albus grows fast and is high in quality, cost is low, and catching is convenient.

The present invention provides a blue crab breeding method in autumn and winter, which relates to a blue crab breeding method. The present invention provides a blue crab breeding method in autumn and winter integrating monosex cultivation, overwintering, fattening and reddening. The method described by the present invention comprises: draining water in cultivation pool and insolating bottom mud to crazing, cleaning pool by quicklime before stocking; filtering water by a water feeding screen, fertilizing and developing the pool water, selecting copulated mother crab and confirmed copulated female crab after autumn begins; selecting the stocking density of 2.2 to 4.5 per m<2>; selecting cultivation time from the beginning of October to the beginning of November, mating season to next year last ten-day period of January to the beginning of February, and culture-cycle of 3 to 3.5 months; and the method described by the present invention is characterized in that the water quality requires that the temperature is 5 to 30 DEG C, the salinity is 6 to 15, the pH is 7.8 to 8.5, the transparence is 30 to 40cm; the water changing amount per day is 20 percent to 50 percent, water added quicklime is splashed and spread into the whole pool after dissolved every ten to twenty days, the amount of quicklime is 0.02 to 0.03 kg/m<3> pool water; and the bait is fed one time every day.

The invention discloses a three-dimensional seedling cultivating method of octopus variabilis, which comprises the construction of a multi-layer artificial spawning ground in an indoor breeding pond for shading parents, the three-dimensional temporary culture of the octopus variabilis for inducing maturation and spawning, the spawn protection of the parent for hatching and the three-dimensional cultivating of larvae. Initial baits are the larvae of benthic crustaceans, cladocerans and the like. The artificial spawning ground can be divided into tile type, pipe type or shell type and formed by multi-layer staggered placement in the indoor breeding pond according to a certain way, thereby leading the parents of the octopus variabilis to have separate sufficient spawning and hatching space and effectively avoiding the phenomena of fight and eating of the octopus variabilis. The method can lead the temporary culture density of the parents to achieve 10-20 pieces/m3, lead the hatching rate of the larvae to achieve 75% and lead the culture density of the larvae to achieve 300-500 pieces/m3, avoid the eating phenomena of the parents and the larvae and realize the rapid growth of seedlings. The method is applicable to large-scale seedling breeding of the octopus variabilis.

The invention relates to a layered cage rearing device and a using method thereof. The cage rearing device comprises at least one cage body, wherein the cages are overlaid to form a group; a movable feeding door is arranged on the lateral side of the cage body; round holes are formed on the cage separator and coaming of the cage body; the cage body is formed by two pairs of symmetric arc edges and straight edges; a plurality of through holes are formed symmetrically on the outer rims of the arc edges; and a lantern ring is arranged in the center of the top of the cage body. By using the device and the method, the raising density is increased to 4,000 to 12,000 crabs per Mu from hundreds of crabs per Mu, 6 to 20 crabs can be reared in every square meter (on square meters, the raising density includes soil pond raising, and also can be used as calculation bases for indoor high-density raising), so that mutual killing among crabs is completely avoided, and the survival rate of the crabs is improved.

The invention relates to a land-based crab breeding device. The land-based crab breeding device consists of one layer of row cages or is formed by overlapping more than two layers of row cages, wherein each layer of raw cages consists of one crab cage or is formed by connecting more than two crab cages in series through the sides; run-through holes at the corresponding position of the side of each layer of crab cages are positioned on the same straight line; three groups of run-through holes for connecting a water supply pipe, an air supply pipe and a blowdown pipe are formed on the sides of the crab cages; discharge holes are formed on the bottom surfaces of the crab cages; the water supply pipe, the air supply pipe and the discharge pipe transversely pass through the three groups of run-through holes of each layer of crab cages below the top layer of crab cages correspondingly; the water supply pipe and the air supply pipe are communicated with each crab cage through a three-way connector; the discharge pipe in each crab cage is communicated with the discharge hole at the bottom of the previous layer of crab cages through the vertical end of a T-shaped three-way connector; control valves are arranged on the water supply pipes, the air supply pipes and the discharge pipes; and airflow and water circulation in the crab breeding device is controlled by adjusting the control valves arranged on the water supply pipes, the air supply pipes and the discharge pipes.

The invention mainly relates to the technical field of breeding and discloses a fattening method for reducing mutton flavor. The fattening method includes weaning and separating, early-stage fattening and later-stage mutton flavor reducing. The method is simple and easy to operate, fat content of obtained mutton is reduced by 6.1% while protein content is increased by 3.3%, the mutton is light in flavor and tender in texture, mutton palatability can be improved evidently to increase mutton sales, and economic income can be increased by 11.2%. Weaned lambs are bred in different houses according to sizes, so that growth synchronism and convenience in unified feeding and slaughtering are realized, and breeding cost is saved. Sheep subjected to fattening is weak in gastrointestinal function and needed to be fed with a great quantity of fattening materials and less silage 50 days before a fattening period, pelelith powder is added into the fattening materials to balance gastrointestinal flora, promote nutrient absorption and accelerate growth and development of the sheep subjected to fattening, and the silage is composed of various plant materials to promote absorption and improve disease resistance of the sheep subjected to fattening, antibiotic consumption is avoided, and mutton tenderness, safety and health are realized.

The invention discloses a method for manufacturing an antifouling and antibiosis type yellow croaker net cage, which relates to a method for manufacturing a mariculture net cage. According to the invention, the method for manufacturing the antifouling and antibiosis type yellow croaker net cage adopts a buoyancy force system and a netting system, and is characterized in that the buoyancy force system adopts a combination buoyancy force form of 'an anti-aging high-density polyethylene double-floating-pipe cylindrical frame structure + 18 cube cystosepiments with each edge length of 60cm; the netting system adopts a combination structure netting form of 'a first box longitudinal netting + a second box longitudinal netting + a net cage bottom netting; the net cage bottom netting is assembledon a circular high-density polyethylene pipe support which is wrapped with a layer of polyamide multifilament wrap knitting net; and three cross lacing lines are installed at the bottom of the net cage, a polypropylene rope is tied at the cross point of the cross lacing lines, and two foam float bowls which are externally wrapped by double-layer seawater corrosion protection canva and nylon nets are tied at the other end of the polypropylene rope.