141 results about "Copepod" patented technology

Larviculture is performed using Parvocalanus sp as a feed for fish larvae. A system is described using tanks for growing Parvocalanus sp nauplii with a microalgae feed and transferring the grown Parvocalanus sp nauplii to tanks containing the fish larvae, where the functions of the tanks is interchanged. The Parvocalanus sp feed provide for higher numbers of larger juvenile fish and the rearing of larvae heretofore not reared in culture.

The invention discloses a benthic diatom culture method for growing seedlings and an abalone fry culture method, which relate to an abalone culture technology. The invention is characterized by comprising the following steps: (1) starting culturing algaes 45 days before pulling seedlings, keeping the culture water temperature at 14 DEG C and the illuminance between 20001 and 30001x, controlling the light between 10001 and 15001x at the last culture after screening and eliminating algae culture for one and half a month, and laying ovum after 7 days; (2) adding nutrient salt at primary culture,wherein the adding ratio of N:P:Si:Fe is 5:1:1:1(ppm); (3) laying ovums about 5 millions for each pool and carrying out micro inflation; (4) changing water regularly after the ovums are laid and changing water twice a measuring range which is 24 hours; (5) carrying out running water culture after the ovums swim for 5 to 6 days and are adhered; (6) controlling the illuminance within 10001x after larvas metamorphose; and (7) dumping the pool after treating copepods at about 30 days of the culture period, adjusting the illuminance between 15001 and 20001x and peeling off baby abalones after about45 days. The methods have the advantages of improving the yield and preventing and treating a plate stripping disease.

The invention relates to a composite nutrition enhancer and a preparation method thereof, relating to a feed additive. The invention provides the composite nutrition enhancer, which not only contains large amount of DHA, ARA and natural yeast astaxanthin, but also contains multiple Omega 3 unsaturated fatty acids, multiple amino acids and trace elements. The composite nutrition enhancer is formedby composition of fission chytrid microalgae and phaffia rhodozyma with the weight ratio of 50 percent to 80 percent and 20 percent to 50 percent. All the components are weighed and mixed according to matching ratio after being crushed, mixed evenly, powder-sieved till the particle size is 8-25mum, inspected, weighed and packaged. The invention is especially applicable to feeding of live eels fryand shrimp postlarvae, artificial seawater seedling enhanced artemia salina sinnaeus, rotifer and cladocera (micrura), copepods and the like and various egg-laying poultries.

A method to killing copepod in Rotifer culture relates to bait applicator culture aimed at solving the problem of killing copepod in Rotifer culture. The technology program of the invention includes: equipping inflatable stone in the pool, injecting seawater and seawater Chlorella, it is characterized by equipping inflatable stone in the pool by one/ m2, injecting seawater and seawater Chlorella by3:1 to 4:1, the salinity of mixed seawater is 15-20%., the rotifer asylum density is 1000-1500/ml, the water temperature is 25-30degreeC, pouring the anthon solution into the pool by the density of 1.2g/m3, collecting the rotifer using the 250 mesh sieve silk bags after 24 hours and maintaining inflatable in the rotifer process. The invention applies to the bait applicator culture of fish, shrimp, crab seed.

The invention discloses an ecological Japanese sea horse breeding method. The ecological Japanese sea horse breeding method comprises the steps of building an ecological sea horse breeding pond one week before breeding, cultivating microalgae in the built ecological breeding pond, and measuring and controlling water quality to reach newborn sea horse breeding indexes before newborn sea horses are bred. When the newborn sea horses is younger than 15 days, the released density is 1000-1200 tail/m<3>, and baits are composed of rotifer, copepods larvae, chlorella, photosynthetic bacteria, tetraselmis and fairy shrimps which are just incubated. During 15-30 days, the released density is 600-1000 tail/m<3>, baits are composed of fairy shrimps, copepods larvae and shrimp seeds, and the baits are fed into the breeding pond four times per day. A sea horse juvenile fish breeding stage comprises the step of enabling the water quality to reach juvenile fish breeding indexes before breeding. During 30-40 days, the released density is 600-800 tail/m<3>, and the baits are fed into the breeding pond three times per day. A sea horse adult fish breeding stage comprises the step of enabling the water quality to reach sea horse adult fish breeding indexes. The released density of sea horse adult fish is 200-400 tail/m<3>, baits are fresh and alive shrimps, and the baits are fed into the breeding pond three times per day. The ecological Japanese sea horse breeding method has the advantages of reducing production cost.

The invention discloses a cultivation method for green crab seedlings in a pond. The cultivation method consists of seedling cultivating facilities and a seedling cultivating process and is characterized by comprising the following steps of: preparing a mud or sediment bottom seedling cultivating pond; arranging miropores for inflating and an aerator in the seedling cultivating pond; carrying out pond cleaning and sterilization on a water reservoir and the seedling cultivating pond before the seedling is cultivated; filtering inflowing water by using a bolting-cloth mesh bag with 120 meshes; directly incubating green crab larva in the seedling cultivating pond; starting all aerating facilities from the second day after the green crab larva are incubated; feeding the green crab larva with the following baits: feeding with wheel animalcule at the earlier stages of Z1 to Z3, preventing copepods from entering into a seedling cultivating water body at the stages of Z1 to Z2, feeding with the wheel animalcule and supplementing the feeding of the copepods with small specifications at the later stage of Z3, feeding with the copepods with small specifications at the stage of Z4 and feeding with the copepods at the stage of Z5; and gradually adding new water from the stage of Z3, wherein the water level at the initial stage of seedling cultivation is 70-80cm and the water quality indexes during seedling cultivation are that dissolved oxygen is not smaller than 5mg/L, the contents of ammonia and nitrogen are not greater than 0.4mg/L, the pH value is 7.8-8.5 and the salinity is 28-34.

The invention discloses a color enhancing feed for leopard coral groupers, and a preparation method of the color enhancing feed. The feed is prepared from the following components in percentage by mass: 5-30% of natural krill powder, 20-60% of white fish meal, 3-10% of yeast, 10-30% of artemia, 5-15% of turmbicula akamushi, 5-16% of hydrolyzed protein, 10-30% of high gluten flour, 5-20% of squid powder, 5-15% of spirulina, 1-5% of fish oil, 1-3% of lecithin, 1-3% of betaine, 1-2% of a vitamin mixture, 2-4% of a mineral element mixture, 1-5% of a microorganism preparation, 1-3% of a compound immunity reinforcing agent, 1-5% of copepods, 1-3% of casein, 1-3% of EPA, 1-5% of DHA, 1-5% of ARA, and 1-2% of a phagostimulant. The feed disclosed by the invention can effectively improve body color,and the problems that color is gloomy, color enhancement is difficult, and the color is liable to be light and not liable to recover under stress state are solved. Besides, according to the preparation technology, the digestibility and the absorbability of the feed are improved, nutrient elements are not destroyed, and the freshness and the food calling properties of the feed are guaranteed.

The invention provides a method for culturing and transplanting Scylla fries stage by stage, which relates to a Scylla culture method. The method comprises the following steps of: culturing zoeae in a culture pond for culturing for 12 to 18 days, and transferring the zoeae into a megalop culture pond with the area of 100 to 300 square meters for further culture; culturing live foods such as algae, fairy shrimps, copepods and the like in the megalop culture pond; transferring the fries at the last day of the fifth stage of the zoeae or at the first day of megalop, wherein the culture density of the megalop is controlled to be 1,000 to 2,000 fries per cubic meter; or culturing the zoeae at the fifth stage for 4 to 8 days, wherein the culture density is 2,000 to 4,000 fries per cubic meter; the water temperature of the megalop culture pond is between 24 and 32 DEG C; and the salinity is 1.5 to 2.6 percent; and transferring the megalop into a young Scylla culture pond, wherein the area ofthe young Scylla culture pond is 0.5 to 3 mu; the water temperature is between 26 and 33 DEG C; and the salinity is 1.0 to 2.0 percent.

The invention provides a breeding method for amphiprion ocellarises. The breeding method comprises the following three steps: a. breeding parent fishes; b. incubating oosperms; c. breeding young juvenile fish. Fry is bred for 60 d after being incubated, the overall length of the juvenile fish is up to 2 cm to 3 cm, and the breeding process is ended up; during the breeding process, the minced-meat-shaped fresh bait made of rotifer intensified by seawater chlorella for 24 h, artemia and copepods intensified by DHA and the chlorella for 12 h, and marine small animals of which phospholipid content is more than 25% in succession and compound feed are fed as the bait in an individual manner or a superimposed manner; furthermore, water is changed and the amphiprion ocellarises are divided and put in fish tanks in proper time. The breeding method for the amphiprion ocellaris, provided by the invention, provides a way which can be operated in an industrialized and large-scale manner; compared with the prior art, as the breeding method provided by the invention is of popularity to a higher degree, a foundation is provided for large-scale breeding of the amphiprion ocellaris.

The invention relates to a bait feeding method for farmed hippocampus erectus. During the farming period of the young hippocampus erectus, bait feeding is performed according to the following steps that before the body height of the young hippocampus erectus reaches 6.5 cm, copepods are fed to the young hippocampus erectus, wherein the feeding density is 15-20 pieces per milliliter; after the body height of the young hippocampus erectus reaches 6.5 cm, the copepods continue being fed to the young hippocampus erectus, wherein the feeding density is 15-20 pieces per milliliter; adult brine shrimps are fed to the young hippocampus erectus in an auxiliary mode, and the daily feeding amount accounts for 10 percent -12 percent of the weight of the young hippocampus erectus. According to the growth of the young hippocampus erectus, bait of different specifications is fed, and the two kinds of bait with different specifications and different nutritive values are mixed together for feeding; in this way, the feeding efficiency and feeding quality of the young hippocampus erectus can be guaranteed, and therefore cost of bait for the young hippocampus erectus during the stage of 6.5 cm-9.5 cm of the body length of the young hippocampus erectus is lowered by 50 percent; besides, maturing time can be shortened by about 9 days, so that energy consumption and labor cost are lowered, and the system utilization rate is increased. Accordingly, the bait feeding method has good application prospects.

The invention discloses a special compound feed for breeding parent shrimps of Litopenaeus vannamei. The special compound feed contains the following components in percentage by weight: 20%-45% of whole squid meal, 5%-20% of Peru fish meal, 5%-15% of copepod dry powder, 2%-5% of enzymolysis fish soluble meal, 2%-8% of spirulina powder, 3%-10% of fly maggot meal, 5%-20% of oyster powder, 1%-4% of enzymolysis beer yeast powder, 1%-4% of sea rhodotorula, 5%-20% of alpha-starch, 1%-3% of soybean lecithin, 1%-5% of squid liver oil, 0.5%-2% of calcium dihydrogen phosphate and 1%-3% of a compound premix. The special compound feed is specially used during the breeding of the parent shrimps of Litopenaeus vannamei and is used for supplying nutrients required by the parent shrimps in the breeding stage; by adding multiple components which can mutually generate synergistic interaction effects, the digestion and utilization of the main nutrients are promoted, the immune capacity and health condition of prawns can be improved, the gonadal maturation quality is improved, and the hatching rate of fertilized eggs and the survival rate of larvae are increased.

The invention provides an indoor cement-pool artificial breeding method for oplegnathus punctatus. The method comprises the following steps: (1) water-quality regulation and control: before hatched fish larvae are put, adding an EM probiotic preparation and natural alga cultivating pool water into a pool in each day; (2) pool entry: before the hatched fish larvae are put, distributing air stone ina transverse H manner, and putting the fish larvae in the pool, wherein the putting density is 13000-15000 fish larvae per cubic meter; (3) feeding management: feeding the fish larvae which are 20-40days old with baits including copepods and living mysis, and feeding the fish larvae which are over 30 days old with microencapsulated opening baits; (4) water change and illumination management: after the fish larvae are fed for 30-49 days, replacing water with 100%-150% of filtered seawater, and carrying out indoor illumination on the fish larvae which are 20-35 days old at 2500x-30001x, so asto realize light induced food intake; and (5) larvae outputting: transferring the larvae into a maritime net cage for breeding. According to the indoor cement-pool artificial breeding method, the growth quality of the fish larvae is improved, the death rate of the fish larvae is decreased, stress reaction of the fish larvae on a net cage breeding environment is reduced, and the survival rate of adult fish is increased.

The invention relates to a breeding method for increasing survival rate of fish larvae. The method specifically comprises the following steps: (S1) putting the fish larvae into a soil pond, then, carrying out feeding for 3 times separately in the morning and afternoon according to the daily feeding amount of 18g to 22g of rotifers per ten-thousands of fish larvae, and carrying out feeding at the interval of 1 hour for 7 continuous days; (S2) from the eighth day, increasing 10% to 15% of Copepoda every day so as to gradually replace the rotifers until the rotifers are completely replaced, and carrying out feeding according to the daily feeding amount of 30g to 50g of the Copepoda per ten-thousands of the fish larvae at the feeding times and time interval in the step (S1); (S3) after the body length of each fish fry is greater than 1.5cm, increasing 10% to 15% of powdery seawater fish feed every 3 days so as to gradually replace the Copepoda until the Copepoda is completely replaced, and carrying out feeding according to the daily feeding amount of 50g to 80g of the powdery seawater fish feed per ten-thousands of the fish fries at the feeding times and time interval in the step (S1); and (S4) after the body length of each fish fry is greater than 2.5cm, increasing 10% to 15% of zero feed every day so as to gradually replace the powdery seawater fish feed until the powdery seawater fish feed is completely replaced, and carrying out feeding according to the daily feeding amount of 80g to 100g of the zero feed per ten-thousands of the fish fries at the feeding times and time interval in the step (S1).

The invention discloses a technology for cultivating takifugu flavidus summer fingerlings in a cement pond of a simple plastic greenhouse. The cement pond is adopted, and an arch-shaped ring top is formed above the cement pond. The technology is characterized in that: a dimmable shading film covers on the arch-shaped ring top; the air density in the cement pond is 1-1.5 pieces per square meter; the stocking sizes are 10-12 millimeters in full lengths per fingerling; the stocking density is 1,000-1,500 fingerlings per square meter; the water level is 70 centimeters during stocking; 20 centimeters of fresh water is injected every day from the second day, the cement pond is full of water four days later, and 50 percent of water is changed every other day from the fifth day; after 10-15 days of cultivation, bait scraps and fish excrement are cleared; the water quality indexes are that: the salinity of sea water is 0.8-1.2 percent, the water temperature is 25-28 DEG C, the dissolved oxygen is over 5 mg/L, and the pH is 7.5-8.5; medium-sized cladocerans and copepods are fed at an earlier stage, and large frozen fairy shrimps are fed at a middle stage; and after the full lengths of fingerlings are up to 30 millimeters, a compound feed is fed instead of the frozen fairy shrimps, and an eel feed is fed completely after 3-4 days of transition.

The invention discloses a method of utilizing filter-feeding organisms to remove algae. The method includes: allowing algae-containing water to sequentially flow through water storage facilities in serial connection, sequentially putting copepods, filter-feeding shell-filter-feeding fishes, copepods and filter-feeding shell-filter-feeding fishes into the water storage facilities, and adding a microbial restoration agent into the water storage facilities when a lot of algae appears, wherein the microbial restoration agent comprises nitromonas, nitrosomas, bacillus subtilis, poly-phosphorus microorganism and photosynthetic bacteria. Meshes of a net for each water storage facility in which the copepods are put in are 0.5-2mm while meshes of a net for each water storage facility in which the filter-feeding shell-filter-feeding fishes are put in are 15-60mm. By the method, floating algae in a water body and nitrogen-phosphorus concentration of the water body can be reduced, growth of algaeattached on a water bottom layer is promoted, serial connection of the copepods, filter-feeding shells and filter-feeding fishes and feeding habit difference are utilized to achieve the objective of algae removal, the algae can be eliminated to greatest extent, and algae digestion capacity is improved.

The invention relates to a feeding method of controllable bait for fries of Takifugu flavidus. The feeding method is characterized by comprising the following steps of: taking egg yolk as the bait during the initial stage when the fries are aged 2-10 days, and uniformly splashing and feeding in a full pool six times per day; taking Artemia larvae which are justly hatched as the bait when the fries are aged 7-10 days, and supplementing twice per day, wherein the feeding density is 2-3 larvae/ml; taking the Artemia larvae as the bait when the fries are aged 11-19 days, and supplementing twice per day, wherein the feeding density is 3-5 larvae/ml; taking frozen copepods as the bait when the fries are aged 14-19 days, uniformly splashing and feeding in the full pool, and supplementing six times per day, wherein the feeding density is 4-6 copepods/ml; taking the frozen copepods as the bait when the fries are aged 20-25 days, uniformly splashing and feeding in the full pool, and supplementing six times per day, wherein the feeding density is 4-6 copepods/ml; taking frozen large Artemia as the bait when the fries are aged 25-35 days, melting the bait at normal temperature, feeding to a bait table, and supplementing three times per day; and feeding compound feed when the fries are aged 30-35 days, placing 4-6 blocks of the compound feed on each bait table, and feeding twice per day, wherein the compound feed is kneaded into pastes.

The invention discloses a method for mixed cultivation of sea horses and hemifusus ternatanus.Hemifusus ternatanus and sea horses are cultivated inside a culture pond to construct a fish and shellfish circulation ecological cultivation system, suitable culture objects can adapt to all ecological niches and trophic levels in the culture pond, and bait waste and water pollution caused by residual bait are avoided.The sea horses and the hemifusus ternatanus occupy different ecological niches in the cultivation environment respectively, various kinds of natural bait in water and artificial feed put into the water can be sufficiently utilized, the total conversion rate of objects and energy in the culture pond is increased, the water quality is effectively stabilized, and entrance of etiology is controlled.The sea horse bait mainly includes copepods, artemia and small shrimps; the hemifusus ternatanus is demersal sarcophagy, and no additional feeding is needed in the cultivation process, so that the hemifusus ternatanus eat residual bait generated in the cultivation process of the sea horses, and the role of a scavenger is brought into play.Accordingly, the purposes that the bait utilization rate is improved, water pollution caused by residual bait is avoided, diseases are prevented and treated, and the production cost is saved are achieved.

The invention relates to an odontobutis obscurus large-size fry artificial classification separate culture method. The method comprises the steps that 1, a net cage is arranged in an indoor culture groove, oxygen increasing heads are arranged on the periphery of the indoor culture groove, a water pushing device is arrange on one side, and a water filtering device is arranged on the other side; 2,newly hatched larvae of odontobutis obscurus are put in the net cage of the culture groove; 3, the culture water depth is controlled to be 0.3+/-0.6 m, the water temperature is controlled to be 22-28DEG C, and sewage suction and water replenishing are conducted every afternoon; 4, after hatching is conducted for 3 d, cladocerans and copepods obtained after filtering through a 60-mesh sieve serveas initial feed, after 7 d, bait mainly adopts limnodrilus and secondarily adopts the cladocerans and the copepods, and after 14 d, while the limnodrilus is used for feeding, loach and newly hatched larvae of pseudorasbora parva are additionally put; 5, after hatching is conducted for about 10 d, by taking the head width as the standard, odontobutis obscurus artificial classification separate culture is conducted, and hereafter, specification screening and classification are conducted every 10 d. Accordingly, indoor odontobutis obscurus large-size fry culture is achieved, after culture is conducted for about 50 d, for the odontobutis obscurus, the average overall length reaches about 20 cm, the head width is about 3.3 mm, and the pond survival rate reaches 90%.

A method for sea anemone culture in a pond is characterized in that a net cage suspended under the water surface of the pond is used for artificial culture. The net cage is shaped like a cuboid with dimensions of 2*1*1m, the upper face of the net cage is opened, the bottom face of the net cage and the surrounding side faces are fenced by net plates, and the net size is eight meshes; the multiple net cages are disposed and arranged in a line along the length direction of the net cages, the upper edge of each net cage is connected by two parallel main ropes, multiple supporting rods are fixed at an interval between the two main ropes, and a floating ball is connected at the joint between each supporting rod and the main rope; auxiliary ropes are connected to two end heads of the main rope, and the end head of each auxiliary rope is connected to a rope anchor located at the bottom of the pond; and an attaching baseplate is disposed in the net cage, the attaching baseplate comprises a bottom plate, a corrugated plate is fixed on the bottom plate, and through holes are arranged in the corrugated plate. Materials could be obtained easily; the method is simple; operations are easy; management is easy; sea anemones could be bred separately or bred together with trepang to eat trepang enemies such as copepod and gammarid; space in a pond water area is fully used; the survival rate is high; and the growth speed is high.