451 results about "Cage culture" patented technology

The invention provides self-disinfection chicken cage culture equipment. The self-disinfection chicken cage culture equipment comprises a frame, a cage and an egg conveying belt. A limiting plate is fixed to the upper portion of a front panel of the cage, the limiting plate is connected with an upper side plate in a sliding mode, hydraulic rods are fixed to the upper portion of a rear side plate, movable frames are fixed to the output ends of the hydraulic rods and fixedly connected with the limiting plate, a liquid inflow pipe is arranged on the upper portions of the side plates, and a medicine kettle is connected to the liquid inflow pipe in a threaded mode. Disinfection medicine is contained in the medicine kettle and comprises 60-90 g of folium artemisiae argyi, 60-90 g of sanguisorba officinalis, 60-90 g of gentiana scabra, 30-50 g of Rhizoma Ligustici, 30-50 g of cimicifugae foetidae, 30-50 g of cortex phellodendri, 30-50 g of rhizoma anemarrhenae, 30-50 g of curcuma zedoary, 30-50 g of radix sophorae flavescentis, 15-30 g of tripterygium glycosides, 15-30 g of Chinese azalea flowers, 15-30 g of calamine, 15-30 g of tenuifolia, 15-30 g of aloes, 15-30 g of ash bark, 15-30 g of radix scrophulariae, 10-20 g of chrysanthemums, 15 g of hydrargyrum oxydatum crudum and 15 g of peracetic acid. The self-disinfection chicken cage culture equipment is simple in structure, convenient to use and good in chicken output effect, the bodies of the chickens and the emptied cage are synchronously disinfected in the chicken output process, and the pathogenic bacterium contamination probability is reduced.

The invention provides a deep sea net cage culture integrated platform which comprises culture net cage subsystems which perform the fish culture function and composed of anti-wind wave net cages, a power supply subsystem using solar energy and wind energy to generate electricity, a supporting platform for fixing the power supply subsystem and the culture net cage subsystems in the special space and an anchoring subsystem. The power supply sub-system is installed on the supporting platform; the net cages are connected with the supporting platform in a flexible connecting mode, the anchoring subsystem is composed of a power supply subsystem anchoring device and a net cage subsystem anchoring device. The supporting platform is further provided with feed storage rooms, bait feeding devices, monitoring devices and a communication device. The platform can realize automatic net cage fish culture production in a sea area under highoceanic condition, and has the characteristics of strong wind wave resistance, environmental protection, and high production efficiency and the like, and is a comprehensive platform for supporting sea water fish culture from near-shore to deep sea.

The invention relates to an ecological culture net cage capable of automatically sinking and floating to keep balance and relates to a culture net cage in the field of seawater culture equipment. The ecological culture net cage comprises a net cage frame which consists of buoyancy vertical pipes, top connecting pipes, bottom upper connecting pipes, bottom lower connecting pipes, internal tie bar pipes and ground anchors; a net cage sinking and floating system which consists of communicated air pipes, a head air pipe, air inlets / outlets and water inlets / outlets; and a net which consists of a top net, a bottom net, side nets and net ribs. The sinking and floating system is an automatic-balanced net cage sinking and floating system consisting of the buoyancy vertical pipes and air inlet / outlet valves and water inlet / outlet valves in the buoyancy vertical pipes, can realize the automatic-balanced sinking and floating of the net cage, is stable to be lifted up and lowered down and can prevent the net cage from getting turned upside down during sinking and floating. Since sea cucumber anti-wind and anti-wave adhering bases are arranged in the net, when heavy-wind and heavy-wave ocean currents are encountered, sea cucumbers can enter the adhering bases for inhabitation. Since a dual-layer net with a black inner layer and a light green outer layer is arranged and the internal part of the net is dark green, the net is particularly suitable for the growth habit of the sea cucumbers. The net cage has the advantages that the cultured sea cucumbers grow vigorously, the yield is high, the economic income of fishermen is good and the social benefit is remarkable.

The invention relates to a cultivation method of spotted maigre in seawater cage culturing industry, which pertains to the technical field of agriculture mariculture. By utilizing different starvation time produced by compensation growth mechanism of spotted maigre with different weight, the invention puts forward different feeding methods for spotted maigre with different weight; the feeding methods include daily feeding amount, feeding frequency and stocking density which is suitable with the feeding frequency. The feed utilization rate of feed by adopting the method of the invention is improved by 13.7 percent; labor cost and feed cost of the cultivation is reduced, the fat content of the cultured spotted maigre is 5 percent to 10 percent lower than that of conventional cultivation, while the protein content is increased by 10 percent to 15 percent, which is conducive to human health, and the output value is increased by 28.3 percent; the cultivation method of the invention has good economic benefit, is an innovative seawater cage culturing method and can be applied for popularization.

To provide a crawl apparatus preventing a crawl from being drifted or broken and stably carrying out culturing even under severe conditions such as installation in a water area at a high water current speed or rough seas or stormy weather by, as necessary, arranging the crawl on or in the water and to provide a method for culturing in the crawl. The apparatus is equipped with the crawl 12, a buoyancy means 16, as necessary, changing and setting the position of the crawl in an optional sinking position on and in the water while supporting the the crawl 12 on or in the water with buoyancy and mooring means 14 for suppressing planar movement of the crawl 12 and mooring and supporting the crawl. For example, the apparatus is designed to locate the crawl 12 in water with relatively calm waves and float the crawl 12 on the water during operation such as feeding. Thereby, the crawl 12 can be used without being broken even in the open sea, etc., with violent waves and culturing in the crawl can stably be carried out. (C)2004,JPO.

The invention relates to the aquaculture field and provides a method for culturing cowfishes by using a net cage. The net cage comprises a metal frame and two paratactic cage bodies formed by independent nets in an enclosing way. The cage bodies are connected through a pedestrian road. The frame is provided with a floating device. Sinkers are arranged at the four corners of the bottom of each cage body. Fixing devices are arranged around the net cage. The method comprises the following steps of: adopting a method matching voice driving with seining to catch the cowfishes; adopting a semidry transportation method to deliver the cowfishes; adopting a field temporary culture and artificial feeding method to domesticate the cowfishes to adapt to the culture environment of the net cage; and conducting net cage culture and daily cleaning management. The method can resist the influences of water flows, tides, waves and the like, can maintain the shape retentivity and the setting stability ofthe culture net cage and can help the cowfishes grow and develop.

The invention relates to a movable operating platform type floating net-cage fish culturing accessory facility. The facility comprises a fish culturing net cage, an inserting and connecting combined type floating fish culturing net cage frame, an automatic feeding machine, an oxygenation device support, an air floating power water circulation oxygenation device and a floating bridge type net-cage fish culturing operating platform. The movable operating platform type floating net-cage fish culturing accessory facility is formed by applying the net-cage fish culturing basic principle, serving the inserting and connecting combined type floating fish culturing net cage frame as a basis and being matched with the related devices suitable for net-cage culturing, namely, the facility is formed by organically combining the air floating power water circulation oxygenation device, the net-cage fish culturing automatic feeder, the floating bridge type net-cage fish culturing operating platform and other facilities. The movable operating platform type floating net-cage fish culturing accessory facility has the advantages of being complete in function, simple in structure and easy to manufacture and saving raw materials. The movable operating platform type floating net-cage fish culturing accessory facility can be used by designing the appropriate culturing loads to determine the number of placed fish culturing cages according to the culturing water environment volume, the movable operating platform type floating net-cage fish culturing accessory facility is easy and convenient to use and operate, and the combined mode is flexible. The net cages are used in a pond for carrying out culturing, and multi-species and multi-types of fishes can be accurately cultured at the same time and do not interfere with one another.

The invention relates to a culture device, in particular to a pond auto-clean cage culture facility capable of timely clearing dirt such as fish excrement and residual feed. The pond auto-clean cage culture facility is characterized in that a dirt suction pump, a blower and a rope roll and power drive assembly are mounted on a rectangular frame. A pull rope is wound around four fixed pulleys and connected to a rope fixing ring of a dirt suction pipe and is wound on a rope roll to form a circular line. The dirt suction pipe is disposed at two ends of the bottom of a pond and rested on a dirt suction pipe slide rail. The dirt suction pipe is connected with the dirt suction pump through a discharge hose. The blower is connected with an aerating pipe which is mounted in the pond. The rope roll and power drive assembly is composed of a motor, a reducer, and the rope roll and further comprises a rope touch switch or timing switch used for controlling a power unit to steer. When reaching the two end points, the dirt suction pipe automatically returns. The pond auto-clean cage culture facility has the advantages that modifying the culture pond is not required, water discharging or flowing water is not required, silt is removed during culturing, a scraper and the dirt suction pump automatically operate by the aid of the timing or touch switch, and the pond auto-clean cage culture facility is applicable to various water areas different in size, shape, depth and the like.

The invention discloses a cage culture method of white feather broilers. The white feather broilers are cultured in a coop, growth of each white feather broiler is divided into a chick period, a small broiler period, a middle broiler period and a large broiler period according to different growth and physiological stages of the white feather broiler in the coop, the coop is divided into four layers corresponding to the growth stages of the white feather broilers, the four layers are overlapped in a step mode, the white feather broilers in the different stages are placed in the corresponding layers of the coop to be cultured, and the chick layer, the small broiler layer, the middle broiler layer and the large broiler layer are sequentially arranged in the coop from top to bottom. The white feather broilers are cultured with different kinds of feed according to the growth stages of the white feather broilers, the cage culture method of the white feather broilers overcomes the influences of the special environments with high culturing density, small moving space and the like on growth of the white feather broilers when the white feather broilers are cultured in the coop, the cage culture method of the white feather broilers has the advantages of being high in poultry coop space utilizing space, low in broiler death and culling rate, high in growth speed, low in feed conversion ratio, high in marketing weight and the like, the broiler culturing cost is reduced, and the broiler culturing economic benefits are improved.

The invention discloses a low-carbon and environment-friendly fish-farming method. The method comprises the following steps: (1) performing cage culture in a pond and assembling a fish feces recovery system and a translation bottom sewage self-leaking system under a cage to recover fish feces, so that sewage and deposits at the bottom of the pond are discharged effectively, and pollution of fish feces and residual feeds on a water body is lowered; (2) arranging aeration equipment outside a cage culture zone to promote flow of the upper, lower and surface layers of the water body and increase dissolved oxygen of the water body; (3) planting aquatic plants in a floating bed and combining pond culture and wet land planting and culture outside the cage so as to realize coexistence of fishes and vegetables and biologically purify water; (4) performing scientific fish culture by adopting a scientific culture mode represented by seven words, namely, water, planting, feed, prevention, separation, mixing and labor. According to the low-carbon and environment-friendly fish-farming method, the current-stage pond fish culture facility is changed, engineering of innovative culture equipment is realized, scientific design and scientific layout are achieved, scientific combination of comprehensive technologies such as physical and biological purification and the like is performed, combination with an ecological and environment-friendly culture technology is realized, and integrated innovation is implemented.

The invention provides a constructing method of a simple ecological leech culture pond. The method comprises the following steps: digging a dry soil culture place to depth of 60-70 cm underground so as to form a basic culture pond; compacting a pond bottom and pond walls; constructing a patrol passage and steps; making a screen box, which is as big as the basic culture pond, by using screens; driving a pile in the constructed culture pond; flatly hanging the screen box on the pile to form a culture screen box; putting hollow bricks at edge parts in the culture screen box; planting underwater grasses and / or water grasses in the culture pond; mounting a sunshade screen in the pond; mounting a bait feeding platform for the pond; and finishing the construction of the culture pond for stocking leeches. The constructing method provided by the invention has the advantages of more reasonable design, convenience in management, simplicity and rapidness in operation, high efficiency and natural property; and by using soil pond+screen box+vegetation as a constructing method, the investment can be reduced. The constructing method provided by the invention is integrated with the advantages of water coil pond culture, soil pond culture and big pond screen box culture, is convenient to manage and achieves high-density intensive culture conditions, so that scientific and ecological culture with high yield and high efficiency is achieved and the leeches can also return to fields according to needs.

The invention relates to a lifting device of cage netting, which belongs to the field of aquaculture devices. An automatic lifting device of the cage netting comprises netting for cage culture and is characterized in that: the netting is connected with a winch which lifts the netting by winching; the winch comprises a machine frame, a driving motor and a winching cylinder; the machine frame of the winch is provided with a wireless receiving controller which is connected with the driving motor of the winch to control the driving motor to work in a positive direction or in an reverse direction and drive the winching cylinder to raise or lower the netting; and the wireless receiving controller is matched with a wireless remote control transmitter. The automatic lifting device of the cage netting uses a wireless remote control technique to control the rise and fall of the cage netting distantly, and fulfills the aims of performing long-distance offshore cage culture fishing, and raising and lowering a plurality of winches and changing nets respectively or simultaneously; besides, the automatic lifting device uses a direct current power supply, so the problems of power supply on water and electric power safety, and provides an advanced and practical netting lifting device for the cage culture.

A cage culture automatic feeding platform system comprises feeding equipment of a plurality of culture cages and a floating body feeding platform. A plurality of pairs of material bins are closely and vertically arranged in the center of a rectangular ship of the feeding platform, the conical bottoms of the material bins are connected with feeding ports of spiral conveying feeding machines through valves, the two spiral conveying feeding machines of every pair of material bins are together connected with an air stopping device, an air channel is arranged below the air stopping devices, two ends of the air channels are communicated with Roots blowers and distributors respectively, the air stopping devices are communicated with the air channel, each distributor is provided with a feeding pipe and a plurality of conveying pipes, the feeding pipes can be switched between the different conveying pipes of the distributors, the feeding pipes are independently communicated with one conveying pipe every time, a spray device capable of horizontally rotating is arranged in the center of each culture cage, and the conveying pipes of the distributors are connected with the spray devices respectively. Remote parallel remote control is adopted by the system, pneumatic conveying and automatic feeding are achieved, manpower is saved, and the culture cages can be monitored and managed in a centralized mode conveniently.

The present invention relates to an ecological cage culture method of finless eel, including lotus rhizome, finless eel, interval culture and using engineering fly-maggot as feed. Said invention provides a good culture environment for grwoth of finless eel, use high-quality high protein engineering fly-maggot as feed so as to can greatly raise finless eel culture density, can shorten feeding period, and its yield can be raised by 50-100%.

The invention provides a cage culture method, a cage and a system comprising the cage. The periphery and the bottom of the cage adopt water-proof thermal-insulating cloth with certain strength; the top part is opened, a drainage hole is arranged at the bottom of the cage; a water distribution system is arranged above the cage, and the entire cage is arranged in the water; low-temperature water is pumped by a pump from the deep part of the lake through the water distribution system, and the water flows into the cage from the upper part of the cage; the water in the cage is cooled or heated up to ensure proper temperature for the normal growth of fish which needs different temperatures; in addition, a mesh bag is arranged inside the cage for catching the fish, and thereby, the fish can be caught and lifted up easily.

The invention discloses a fish bait casting quantity control system for deep-water cage culture, and system obtains the water temperature, salinity, dissolved oxygen concentration, water flowing speed and cultured fish weight of a controlled deep-water net cage at n historical collection moments through a control host, and enables the obtained data to be inputted to a support vector machine model for processing, and then selects an optimal support vector machine model based on the judgment of a mean square error and a square related coefficient of the support vector machine model. The system can predict the result of the cultured fish weight according to the environment factor data of fishes cultured in the controlled deep-water net cage at the current moment, sends a corresponding bait casting quantity control instruction based on the result, and enables a bait casting machine disposed on the deep-water net cage to cast bait according to the bait casting quantity control instruction. The system can achieve the automatic and high-precision bait casting for all deep-water net cages under a specific environment factor, reduces the bait waste and environment pollution which are caused by unreasonable casting, and greatly improves the culture benefits.

The invention discloses a cultivation method of sturgeon. The method comprises the steps as follows: firstly, a cement culture pond is sterilized for accommodating sturgeon fry; the sturgeon fry is put into the culture pond, and greenhouse cultivation of the sturgeon fry is performed; then the sturgeon cultivated in a greenhouse is transferred to deep water net cages in a reservoir for commercial sturgeon cultivation; and finally, scientific feeding is performed until commercial sturgeon appears in the market. A novel cultivation mode of cultivating the commercial sturgeon in the greenhouse and the net cages is provided, according to the method, power consumption on year-on-year basis is reduced by 70%-80%, the labor cost can be reduced by 50%, the culture cycle can be shortened by 15-20 days, water resources can be saved, and the survival rate of the sturgeon can be increased and can reach more than 96%. In conclusion, the whole cultivation method can reduce cultivation costs and risks, and accordingly, economic benefits are increased.

The invention provides a bait casting machine for cage culture, wherein the machine is equipped with a diesel engine or petrol engine water pump, which is connected with a triple valve, one path of the triple valve is connected with the bait bin through a flushing control valve and flushing pipes, the bait bin is in communication with the mixing chamber through the blanking tube, the blanking tube is equipped with a blanking control valve on the outside, the other path is connected with a bait throwing flexible pipe through the mixing chamber, the one end of which is equipped with a blow head, one end of the angle controller is connected with the outer wall of the bait bin, the other end is connected with the bait throwing flexible pipe. The invention solves the problem of absent power supply of the deep water net cages.

The invention provides a piece of circular overlapped multilayered cage culture feeding equipment, which comprises a cage body 1, a central stand column 2, a feeding system, a water supply system, and a motor, wherein the cage body 1 has a concentric circle structure; a scraper 4 which is inclined to the center of the circle is arranged on the top of the first layer of the cage body 1; the central stand column 2 is positioned in the center of the circle of the cage body 1 and is connected with the cage body; one end of a feed pipe 7 is connected with the lower part of a feed tank 8, and the other end of the feed pipe 7 is connected with a crib 5 at the periphery of the bottom of the cage body 1; the water supply system is equipped with a water pipe 9 on the top of the cage body 1; and a nipple 10 is arranged on the water pipe 9 for automatically supplying water. The circular overlapped multilayered cage culture feeding equipment is simple, improves the feeding density, can be combined and spliced, saves the manual labor and energy, maximizes the space utilization, integrates feeding, water supply, egg collection, manure clearing and other automatic operation systems, is widely applied to poultry, and achieves the optimized effects on poultry farming and growth under the same illumination and ventilation conditions.

The invention relates to a method for breeding rice field eels at high density in flowing water under controlled-temperature condition, which belongs to the technical field of fishery science application, and is characterized in that: a flowing water culture pool is built in a fully-closed greenhouse, and strong rice field eel fry are selected; fry are added according to a density of 5 to 6kg / m<2>; the fed feed is the mixture of commercial rice field eel compound feed and fresh silver carp flesh; the daily additive amount of feed is 4 to 6 percent based on the weight of the rice field eels; and micro flowing water is kept in the flowing water culture pool, the flow rate is kept between 0.05 and 0.10m<3> / h, and the water temperature of the flowing water culture pool is kept between 25 and 28 DEG C. In the invention, the large-scale soilless flowing water culture pool is built, an in-greenhouse controlled-temperature culture mode has the advantages of fresh culture water with rich dissolved oxygen, high culture density, and high feeding drive and growth speed and few diseases of the rice field eels and is an industrial culture mode; and compared with the prior pool net cage culture mode, the culture mode has higher per unit area yield and greater economic benefit.

The invention discloses a deep sea culture platform integrating marine leisure traveling fishing tour and sightseeing. The conventional marine fishing mode and the design, building and use mode of a conventional culture net cage are changed; the marine renewable energy source power generation is used and is supplied for a culture net box to be used for production; various kinds of mechanical equipment for marine culture, bait feeding, fish collecting and the like are carried; the net box culture and the marine fishing traveling are ingeniously combined; the multifunctional deep sea culture platform is formed.

The invention discloses a marine floating type wind generating set and fishery cage culture comprehensive device. The marine floating type wind generating set and fishery cage culture comprehensive device comprises a wind generating set, a wind turbine tower cylinder, an accommodation platform, a floating type wind turbine foundation in a cone-frustum-shaped steel structure and a mooring device from top to bottom; the wind generating set is mounted at the upper end of the wind turbine tower cylinder, the lower end of the wind turbine tower cylinder is fixed to the floating type wind turbine foundation, and the accommodation platform surrounds the bottom of the wind turbine tower cylinder; the mooring device is connected to the floating type wind turbine foundation and can moor the comprehensive device to a seabed; and the marine floating type wind generating set and fishery cage culture comprehensive device further comprises side face netting, bottom face netting and a lifting device;the side face netting is in a tensioning type and is fixed to the side face of the floating type wind turbine foundation in an encircling mode; and the lifting device is arranged in the floating typewind turbine foundation and connected with the bottom face netting to enable the bottom face netting to rise and fall. A huge culture cage is formed in the internal space of the floating type wind turbine foundation, the cage does not deform, the automation degree is high, and the effects of power generation on the upper portion and fish-farming on the lower portion can be achieved; and the marinefloating type wind generating set and fishery cage culture comprehensive device has good stability and seakeeping performance and is suitable for medium-depth water sea areas with the depth being within 200 m.

The invention relates to a golden pompano feed applicable to deep-sea cage culture. The golden pompano feed comprises the following components in percentage by weight: 35 to 42 percent of imported fish meal, 15 to 23 percent of bean pulp: corn protein powder (2:1), 2.5 to 5 percent of yeast, 1.5 to 5 percent of squid organ meal, 7.5 to 10 percent of peanut meal, 18 to 23 percent of strong flour, 2.0 to 3.5 percent of fish oil, 0.5 to 1.0 percent of granulesten, 1.0 to 3.0 percent of monocalcium phosphate and 35 percent of additive comprising composite vitamin, composite mineral substance, immunopolysaccharides, choline chloride and vitamin C-phosphate. The golden pompano feed can meet all the nutritional requirements of the golden pompano through deep-sea cage culture, so that the cultured objects grow quickly. The golden pompano feed has high feed conversion efficiency and low production cost, can effectively protect offshore resources, obviously reduces disease propagation and pollution to water quality of culture sea area, and has stable sources of raw materials, low cost and a simple production process.

The invention is a bioremediation method of eutrophication in semi-tropical marine fish cage culture region, relating to the cultivation of a kind of edible seaweed, especially the water cultivation nearby or in the fish cage for the bioremediation of the eutrophication. Its steps: selecting algae seeds and breeding them in seawater, where the initially-bred biomass density is less than 800 kg / mu; collecting as the biomass density greater than 1000 kg / mu and then the biomass density is less than 600 kg / mu. The bioremediation hanging culture raft is provided with at least two parallel-arranged poles, the end parts of these poles are connected by ropes or brackets into a frame boby, there are stakeropes between poles, and the frame body are provided with at least 1 supended body and fixed by at least four fixing ropes. It combines algae cultivation with fish cage culture for mixed culture, used for bioremediation of eutrophication of marine culture.

The invention discloses a cage type sea cucumber ecology cultivation net cage capable of sinking and floating, which is composed of a cage-type polygonal frame and a net cage cultivation net, wherein, the net cage frame is characterized in that the one end of a vertical buoyancy tube is welded with a vertical buoyancy tube connecting piece and the other end is welded with a vertical buoyancy tube connecting flange; the two ends of a top connection tube are welded with top connection-pegs; the two ends of a bottom connection tube are welded with bottom connection-pegs; the two ends of a bottom internal stretching branch pipe are welded with bottom internal stretching connection-pegs; the flat surface of a bottom anchor connecting piece assembly is designed with a flange plate connected with a vertical buoyancy tube flange, a pinboard connected with the connection-peg of the bottom connection tube in a plug manner, the pinboard connected with the connection-peg of the bottom connection tube in a plug manner, and the pinboard connected with the connection-peg of a bottom internal stretching branch pipe; the lower part of the bottom anchor flat surface is designed with three legs; a straight leg flat profile is of a cambered surface; a balancer is designed inside the vertical buoyancy tube the top connection piece of which is designed with connectors which are connected with air tubes; the cultivation net is designed into an internal hanging type; and the bottom of the net is designed with multiple ways of bar-type structure sea cucumber cultivation adherence with cambered sectional elevation.

The invention discloses a net cage mooring anchor leg with a power buffering function. The net cage mooring anchor leg comprises a seabed anchor chain used for being connected with an anchor, an underwater anchor chain, one or more floaters, a floating body and a mooring rope used for being connected with a net cage, wherein the seabed anchor chain is arranged on a seabed; the floating body and the mooring rope float on the sea surface; the lower end of the underwater anchor chain is connected with the seabed anchor chain; the upper end of the underwater anchor chain is connected with the floating body; the mooring rope is connected with the upper end of the underwater anchor chain; the floaters are connected to the underwater anchor chain at intervals, so that the anchor chain sections, located between every two adjacent floaters, between the floater at the uppermost part and the floating body as well as between the floater at the lowermost part and the seabed anchor chain, of the underwater anchor chain are in a catenary shape. The multiple anchor chain sections in the catenary shape play a power buffering role on the floating body, so that displacement of the net cage is limited, the occupied area of a net cage culture sea area is greatly saved, stability of a net cage system is improved, stress on the net cage is reduced, and safety of a net cage floating pipe framework is improved.

The invention relates to a method for culturing mud fish by using a net cage, and relates to the technical field of mud fish raising. The method comprises the following steps of: manufacturing the net cage by taking metal as a frame and high-quality nylon net cloth as a net surface; paving soil on the bottom surface in the net cage; putting the net cage into a culture water body to perform the operation of net cage soaking and disinfection in January or February; selecting mud fish offspring seeds of 5 to 7 centimeters in May; and disinfecting the mud fish offspring seeds, and putting the disinfected mud fish offspring seeds into the net cage. The method has the advantages that the recapture rate is improved greatly and the labor cost is reduced effectively; and the mud fish can be supplied in time aiming at market demands, the economic benefit of farmers is improved obviously, and accurate data is provided for daily management and the study of culture.

Disclosed is a recessive white feather green-shelled-egg bantam germ plasma resource cultivation method. Green-shelled genes of green-shelled-egg chickens are introduced to recessive white feather bantam groups, recessive white feather genes, short-legged genes and the green-shelled genes are combined and homozygous by means of hybridization and test mating, a family is built on the basis, the groups are expanded in a breeding manner by the aid of family selection and individual selection, and recessive white feather bantam germ plasma resources with green-shelled-egg laying characteristics are cultivated. The cultivation method has the advantages that recessive white feather bantams are selected to improve the green-shelled-egg chickens, the green-shelled-egg chickens are changed into recessive white feather green-shelled-egg bantams, and the breeding problem of the green-shelled-egg chickens can be effectively solved. Short and small hens with small bodies are suitable for cage culture, consume less feed but lay eggs as many as normal individuals (so that feed efficiency is higher). Besides, the short and small hens have the outstanding advantages of early sexual maturity, reduction of raising space, disease resistance and the like, the production cost of goods generation chickens can be greatly reduced, comprehensive raising benefit is improved, recessive white feathers are recessive as compared with colored feathers of native chicken breeds, and feather colors of filial generations of the chickens in the same place are as same as those of indigenous chickens, so that feather color mixing can be avoided.

The invention discloses a method for producing an organic fertilizer by utilizing a fermentation packing in a cage culture layer house. The method comprises the following step: evenly mixing dried sawdust, dried rice husk, fresh chicken mature and water containing fermentation strains, and piling together for pilling fermentation; then transporting the fermented fermentation packing in the cage culture layer house so as to carry out groove type aerobic fermentation for 1.5-3 months; and clearing the fermented material out of the layer house and then carrying out the pilling fermentation again, after the pilling fermentation, airing the material until the content of water is less than or equal to 20% so as to obtain the organic fertilizer product. Through using the method, the efficient organic fertilizer can be produced, the environment in the layer house is improved, and simultaneously a series of difficultly treated problems, such as clearing, transportation, hazard-free treatment and the like, are solved. The method is ecological and environmentally-friendly, fully meets the requirement of sustainable development of aviculture, and has wide development prospects.

The invention relates to the technical field of fishery culture, in particular to a sturgeon deep water net cage culture device. The device aims at solving the problems that a requirement on a growth temperature range in a sturgeon culture process is high, an over-summer survival rate particularly in China south lake and pond culture is low, and a feed coefficient of the existing net cage culture is high. The device comprises a net cage, and is characterized in that a net drawing device is arranged at the top of the net cage; one end of the net drawing device is fixed on a floating mat; a middle strand is arranged on the net cage; a steel plummet ring is arranged at the bottom of the net cage; and a meal table is arranged at the bottom of the net cage. The device can detect temperature automatically, meets requirements on sturgeon growth temperature in different seasons, particularly in a summer; the net cage is convenient and easy to clean and wash; feed is directly fed at the meal table at the bottom of the net cage, which is suitable for the characteristics of demersal fish and lower mouth of a sturgeon; and an entire water tank is good in stability in water.