65 results about "Shrimp disease" patented technology

The invention discloses a shrimp feed and a preparation method thereof. The feed comprises the following raw materials in percentage: 2.5% of silkworm dropping, 10% of rice bran, 10% of wheat bran, 48% of fish meal, 10% of soybean cake, 2% of beer yeast, 1% of traditional Chinese medicine composition additive, 0.5% of vitamin complex premix, 1% of mineral premix and 15% of feed adhesive. The invention in which Chinese herbal medicines are used for preventing and treating fish and shrimp diseases completely meets the disease control criteria of developing nuisance free aquaculture and producing green marine products, and especially meets the requirements of intensive and large-scale production in the current aquiculture; the Chinese herbal medicines in a certain proportion are prepared into a compound preparation to better play the synergistic effect of the medicines; starch in the feed adhesive is conglutinated at different temperatures by a steaming process, thus increasing the degree of expansion and greatly improving the degree of gelatinization of the starch; and the feed adhesive can completely replace a chemical adhesive on effect in feed processing, improves the sinking property and adhesiveness of the feed, and benefits the shrimp growth and culture, thus creating good economic benefit and social benefit.

The invention relates to a method and a system for identifying the white-leg shrimp disease on the basis of machine vision. The method comprises the following steps of: S1, judging whether an image is an image of a target to be subjected to disease identification, entering the step S2 if judging that the image is the image of the target to be subjected to disease identification, and stopping a program if judging that the image is not the image of the target to be subjected to disease identification; S2, extracting a color feature parameter of the image; S3, carrying out binary segmentation processing on the image; S4, extracting an area feature of the image which is subjected to binary segmentation processing, and calculating the number of pixel points in a target region; S5, carrying out edge detection processing on the image which is subjected to binary segmentation processing to obtain an edge image of the target region, then extracting a perimeter feature of the edge image and obtaining the number of pixels in a target edge region; S6, obtaining a circularity feature parameter by utilizing a ratio of the perimeter to the area of the target region; and S7, obtaining a disease identification result by training the color feature parameter and the circularity feature parameter which are used as training parameters and categorical data sources of a neural network classification algorithm and then classifying the color feature parameter and the circularity feature parameter.

The invention discloses a litopenaeus vannamei and fish mixed culturing ecological breeding method. A pond with brackish water is selected, during a slack winter season, spiral shell harm is removed, filiform algae are cultured in a directed mode, deposit phosphori in the pond bottom are adsorbed and removed, on around the Tomb-sweeping Day in spring, quick lime dry method pond poisoning is carried 20 days before culturing, 10 cm water adding is carried out before fry adding planning, bleaching powder is used for soaking a disinfecting tank bottom for 12 h, 80 cm water adding is carried out, after water adding is completed, oil tea cakes which are soaked by warm water for 24 h in advance are splashed, and organic fertilizer obtained through microbial fermentation is hung at the side of the pond. After water cultivating, young shrimps are subjected to out-of-cage breeding, after seven days, small-specification mixed-culturing fingerlings obtained after salinization are subjected to out-of-cage breeding, on the 35th day, large-specification mixed-culturing fingerlings are subjected to out-of-cage breeding, then the water level is deepened gradually, the water level is controlled to be 1.1 m-1.2 m, in the early period, feeding is carried out 2 times a day, in the medium-later period, feeding is carried out 3 times a day, computing is carried out according to 2%-8% of body weight, breeding is carried out for 80-100 days, and litopenaeus vannamei is harvested. Mixed fishes with the proper matched density are used for eliminating sick and weak shrimps, the infection source of sick shrimps is removed, prawn abnormal group swimming is avoided, sick shrimps are reduced, and the success rate of culturing is improved.

The invention discloses a high bacterial load lactic acid bacteria preparation as well as a preparation method and application thereof and relates to aquaculture. The high bacterial load lactic acid bacteria preparation contains at least one of lactobacillus plantarum, lactobacillus acidophilus and the like, wherein the content of the lactobacillus plantarum accounts for 50-60% of the total bacteria count percentage; and the content of the lactobacillus acidophilus accounts for 40-50% of the total bacteria count percentage. The lactobacillus plantarum and lactobacillus acidophilus can be uniformly mixed according to a ratio; and at least one of vitamin C, fructo-oligose, mannitol and the like is added to serve as a protective agent after mixing. When the existence form of the high bacterial load lactic acid bacteria preparation is a mixture of microbial powder and solid auxiliary materials, the preparation method comprises the following steps: mixing the fermentation liquor of lactobacillus plantarum and lactobacillus acidophilus, adding an additive, concentrating, performing freeze-drying, adding the solid auxiliary materials, and preparing tablets, powder and the like. The high bacterial load lactic acid bacteria preparation can be applied to preparation of agents for preventing and treating shrimp diseases, shrimp growth promoters, feed additives, water purification agents and the like.

The invention provides a farming method of penaeus vannamei boone, The method can increase the yield and quality of the penaeus vannamei boone. The method includes the steps that a pool is prepared, seedling is bred and fodder is prepared, exuviation and synchronous growth are promoted, and catching is processed. The invention has the advantages that feeding density is reduced and survival rate of shrimps is high. The problem of the survival rate of shrimps influenced by fry degradation because of high-density feeding module is solved. The water quality can be controlled during feeding. The left fodder, excreta of penaeus vannamei boone, dead algae and the like can be collected to the central area of the pool by air circulation in the process of oxygenation, a relative large clean water area is formed at the surroundings of the pool, and a clean survive room for shrimps is provided. The daily management to shrimps and pool is processed during feeding, shrimp diseases are reduced. The promoted exuviation and synchronous growth enable the shrimps to be average in size and stable in quality. When the shrimps grows to 8 to 10 centimeters, the shrimps can be caught in time, the load to the pool is relieved, the diseases are controlled, good water environment of the pool is ensured, and the yield of shrimps is increased.

The invention discloses a biological prevention and control method for controlling prawn diseases through Tilapia. The method of the invention realizes the prevention for infectious diseases of the prawn and the increase of prawn survival rate by introducing Tilapia to prawn cultivation zones. The method of the invention can prevent prawn diseases from propagating and becoming epidemic in healthy prawn community, reduce the workload of manually removing diseased and dead prawns, enhance the removal efficiency and the cultivation success rate and bring tremendous economical benefit to the culturist.

The invention discloses a combined method of a stereo ecological polyculture mode and the prevention and control of hepatopancreatic necrosis disease and white spot syndrome. Specifically, 3 days before adding prawn seeds, 200 scatophagus argus fries with length of 3-5cm and 300 siganids fries with length of 2-3cm are added into every Mu of a breeding pond; when prawn seeds are to be added, a prawn seed addition amount is 80000-100000 seeds/Mu; when prawn length reaches 4-5cm, 5-6 Nile perch with length of 8-10cm and 10-15 hybrid giant tiger groupers with length of 8-10cm are added into every Mu of the pond. According to the invention, fishes with different feeding habits are cultured with prawns at a same time, such that diseases and weak prawns are eliminated in time, prawn disease infection source is eliminated, and a water cleaning function is realized. A polyculture mode of prawns and fishes with suitable specifications is started from a breeding early-mid stage, such that a prawn disease infection source is cut off, and hepatopancreatic necrosis disease and white spot syndrome outbreak is prevented. The breeding mode is optimized, such that prawn breeding success rate is improved. The method provided by the invention is suitable for the breeding of prawns such as litopenaeus vannamei, marsupenaeus japonicas, penaeus monodon and the like.

The invention provides a disease comprehensive prevention and control method for greenhouse-cultured penaeus vannamei. The disease comprehensive prevention and control method for the greenhouse-cultured penaeus vannamei is characterized by comprising the following steps: 1, water body regulation and control: (1), matching one culture pond with one disinfection tank, and disinfecting culture water by a bleaching powder, wherein the disinfected culture water can be used after three days; (2), properly irrigating the culture water to the culture pond before putting young shrimps, splashing bacillus preparations and effective microorganisms (EMs) over the whole culture pond, and putting the young shrimps into the culture pond after three days, wherein the bacillus preparations are activated by brown sugar, and the EMs are subjected to fermentation culture by utilizing aerated water of the disinfection tank; (3), no needing of discharging wastewater within 20-40 days before culturing, only adding water once at every three days, and adding the bacillus preparations and the seawater-cultured EMs at every six days; (4) starting discharging a small amount of wastewater once at the morning and the afternoon of every day after culturing for 20-40 days, changing the water once at every three days, and the like; 2, feed management: (1), ensuring the fact that the feeding frequency is different according to different culture time; (2), adding shrimp and crab nutrients, immune polysaccharides and rice vinegar to the fed feed after culturing for 30 days; (3), controlling the feeding amount after the total feeding amount per mu at every day is stable; 3, emergency processing and the like. According to the disease comprehensive prevention and control method for the greenhouse-cultured penaeus vannamei, the explosion of shrimp diseases can be prevented, and the survival rate and the growth rate of penaeus in the culture procedure can also be remarkably increased.

The invention discloses a pond polyculture method of Chinese fresh-water turtle Japanese strain and Litopenaeus vannamei Boone, which comprises the following steps: (1) selecting a pond which has a quiet environment, no pollution in the circumference, sunny exposure and adequate water source and is out of the wind; (2) clearing and disinfecting the pond, storing water and culturing basic bait; (3) putting young Litopenaeus vannamei Boone into the pond from April 20th to May 15th, feeding with artificially compounded shrimp bait, and carrying out water quality management; after 25-35 days of growth of the shrimps, migrating the Chinese fresh-water turtle Japanese strain into the pond for culturing, feeding artificially compounded turtle bait from the day after the turtles are put into the pond, and carrying out culture management work; and (4) shrimping the Litopenaeus vannamei Boone for sale successively in August, and catching the Chinese fresh-water turtle Japanese strain for sale from December to March in the next year. The invention saves energy, reduces the occurrence probability of shrimp diseases, solves the problems of high risk, low land use capability, high culture cost and the like in the current pond culture, effectively improves the qualities of the shrimps and the turtles, and improves the economic benefit of culture.

The invention discloses an aquaculture feed for penaeus chinensis. The aquaculture feed is prepared by main and auxiliary materials. The main materials comprise, by weight, 22-26 parts of fish paste, 23-25 parts of fish meal, 8-12 parts of meat and bone meal, 8-12 parts of blood meal, 10-14 parts of yeast powder, 4-6 parts of sunflower seed cake, 1-3 parts of sugarcane slag powder, 8-12 parts of silkworm chrysalis, 0.8-1.2 parts of fish oil, 6-8 parts of soybean phosphatide, 2-4 parts of cuttlefish paste, 0.2-0.4 part of calcium dihydrogen phosphate, 0.1-0.2 part of green tea powder, and 1-2 parts of black bean powder. The auxiliary materials comprise, by weight, 0.02-0.04 part of insect chitin, 0.01-0.03 part of vitamin premix agent, 0.05-0.07 part of rhizoma polygonati, 0.02-0.04 part of hypericum japonicum, 0.02-0.04 part of medicated leaven, and 0.02-0.04 part of Taibai ginseng. The preparation method comprises the steps of mixing the main materials, granulating, spraying a solution of the auxiliary materials on the particles of the main materials, and drying. Feeding shrimps with the aquaculture feed for penaeus chinensis provided by the invention can promote shrimps to fully absorb nutrition, prevent shrimp diseases, promote shell growth and the shelling of shrimps, improve the yield, and reduce the feed coefficient.

The invention discloses a biological prevention and control method for controlling prawn diseases through grass carps. In the method disclosed by the invention, grass carps are thrown in prawn culture zones, thereby realizing the prevention of communicable diseases of prawns and improving the survival rate of the prawns. The method disclosed by the invention can avoid propagation and spread of prawn diseases in healthy prawn groups, thereby reducing the workload of artificially clearing diseased prawns and dead prawns, improving the clearing efficiency and culture success rate, and bringing greater economic benefit for culturists.

The invention provides a culturing method for high immunity shrimps. The method comprises the following steps of (1) selecting and disinfecting a pond, (2) releasing traditional Chinese medicine liquid (3) releasing shrimp seeds, (4) feeding forage and (5) oxygenating the pond via an oxygenator every two to three days. In the (4) step, in the first to 20th day, shrimp seed forage is released two to three times each day; daily release amount is 4 to 5% of the total weight of the shrimp seeds; and after the 20th day, the daily release amount is 7 to 9% of the total weight of adult shrimps. In the (5) step, water of the pond is exchanged every four to six days; and water exchange amount is 8 to 10% of total water amount of the pond each time. Medicine liquid is released to the pond before the shrimp seeds are released, so shrimp disease-resistance capacity can be enhanced, immunity can be improved and morbidity rate can be reduced. The shrimp seed forage and adult shrimp forage can meet nutrient demands of each growth phases of the shrimps; and the shrimps can quickly grow after eating the forages; and shrimp output of each mu can be increased by 5 to 8%.

A method of freshwater aquaculture of Litopenaeus vannamei in a net cage includes an early-stage preparation step of net-cage aquaculture, a water quality and salinity detection and preparation step before shrimp seeds are placed into the net cage, a shrimp seed feeding step for the net cage, a separative aquaculture step, a culture period management step and a harvesting step. The early-stage preparation step includes A, selecting a proper aquaculture water area; B, setting the net cage; C, placing the net cage into the water one month before the shrimp seeds are fed. The separative aquaculture step includes separating and transferring the shrimp seeds three times in the 20th day, the 40th day and the 60th day, reducing the density and prompting growth of the shrimp seeds. The culture period management step includes daily management and prevention and control of shrimp diseases. The method of freshwater aquaculture of the Litopenaeus vannamei has the advantages that a good well-off way is provided for efficient special aquaculture of various inland lakes and reservoir areas; temporary-rearing desalination formula of ultralow salinity smaller than or equal to 0.5%o; the net cage applicable to freshwater aquaculture of the Litopenaeus vannamei is modified; aquaculture quality of the Litopenaeus vannamei by the net cage is better; benefits of the Litopenaeus vannamei cultured in the net cage are considerable.

The invention discloses an agrobacterium radiobacter mutant strain which is classified and named as an agrobacterium radiobacter mutant strain L-15, and has the preservation number of CCTCC (China center for type culture collection) NO: M2012 294. A method for preparing a beta-1, 3 glucan as a fish and shrimp disease-resistant factor feed additive through utilizing the agrobacterium radiobacter mutant strain L-15 comprises the steps that the agrobacterium radiobacter mutant strain L-15 is inoculated in an inclined culture medium and a basic fermentation culture medium to obtain a secondary seed culture liquid; and the secondary seed culture liquid is added into a 50 L seed fermentation tank filled with 35 L basic fermentation culture medium for culturing for 24-48 hours, the obtained seed liquid is filled in a 500L fermentation tank filled with 350L fermentation culture medium for culturing for 90-100 hours, so the fermentation liquor with the beta-1, 3 glucan content being above 4% is obtained. The method has the advantages of high production efficiency, low cost, short technological process, no fermentation liquor sewage discharge, environmental friendliness and the like.

The appetizing additive for shrimp consists of seven kinds of material, i. e., taurine 45-55 wt%, citric acid 10-15 wt%, betaine 10-15 wt%, glycine 10-15 wt%, nucleotide 10-15 wt%, etc. The appetizing additive is added into shrimp feed to promote eating of shrimp, promote the growth of shrimp, and reduce the waste of feed, the contamination of residual feed on water and shrimp disease.

The invention discloses a high-benefit white-leg shrimp (penaeus vannamei) breeding system and a high-benefit white-leg shrimp breeding method, wherein the high-benefit white-leg shrimp breeding system is realized by placing culture boxes in an aquaculture pond. The high-benefit white-leg shrimp breeding method comprises the following steps: (1) reorganizing an aquaculture pond; (2) releasing shrimp larvae of white-leg shrimps; (3) regulating and controlling water quality during breeding process; (4) carrying out feed management; (5) carrying out daily management; and (6) preventing shrimp diseases. The high-benefit white-leg shrimp breeding system disclosed by the invention adopts a mixed breeding way of fishes and shrimps in which the fishes are bred by using the culture boxes, so that water quality in the aquaculture pond can be improved with the threat of food battle on the white-leg shrimps eliminated; the culture boxes adopt double-layer designs, so that habitats and shell-changing stopovers can be provided for the white-leg shrimps by peripheral gauze nets; and micro-capsule feeds utilized have improved nutritional values, reduced feed coefficients, good palatability and obvious attractant effects. Thus, the high-benefit white-leg shrimp breeding system and method are capable of raising feeding efficiency, improving aquaculture water, increasing survival rates of the white-leg shrimps and improving taste of the white-leg shrimps, thereby promoting speeding up of industrialization and large-scale cultivation of the white-leg shrimps in local areas.

The invention provides a fish and shrimp common disease treating method with a good effect. The method specifically comprises the step of selecting drugs according to fish and shrimp diseases; when fish or turtle suffer from the bacterial rotten skin disease, furacilin and salt are adopted according to the mass ratio of 2:3. EM culture is conducted with a plastic bucket, a measuring cylinder and a mineral water bottle, and the plastic bucket, the measuring cylinder and the mineral water bottle are recyclable devices, so that culture equipment is saved and culture cost is reduced. During culturing, EM nitrobacteria with long drug property are added, the drug property of EM is prolonged by adding EM nitrobacteria during EM culturing, constant adding of EM is not needed in use, and therefore EM is saved. According to the method, a solid product is obtained from EM culture, so that the problem that liquid is hard to place and store is solved and using is convenient.

The invention provides a method for breeding marsupenaeus japonicas by fluoxetine. The method includes workshop treatment, preparation of a culture pond, spreading of young marsupenaeus japonica, dividing, feeding, water changing and capture. The method has the advantages that according to living habits of the marsupenaeus japonicas, a certain amount of the fluoxetine is added into baits to inhibit the habit of submerging in sand, so that sand is not laid during breeding of the marsupenaeus japonicas, manpower and material resources wasted in sand laying can be saved, and shrimp diseases induced by sand laying can be reduced; through scientific and reasonable spreading density, bait feeding amount and daily management, growth of the marsupenaeus japonicas is accelerated, and the survival rate and weight gain rate in cultivation are increased; the success rate of industrialized breeding of the marsupenaeus japonicas can be ensured, a novel breeding mode under artificial conditions is provided, and the method is beneficial to large-scale breeding and promotion and has a wide application prospect.

The invention discloses a feed used for culturing freshwater shrimp and a preparation method, which comprises a main material and an auxiliary material, the component of the main material comprises the following ingredients by weight: 22-26 parts of fish flesh mash, 23-25 parts of fish meal, 8-12 parts of animal bone powder, 8-12 parts of blood powder, 10-14 parts of yeast powder, 4-6 parts of sunflower seed cake, 1-3 parts of bagasse powder, 8-12 parts of silkworm chrysalis, 0.8-1.2 parts of fish oil, 6-8 parts of soybean phosphatide, 2-4 parts of squid paste, 0.2-0.4 part of calcium dihydrogen phosphate, 0.1-0.2 part of green tea powder and 1-2 parts of black soya bean meal; the component of the auxiliary materials comprises the following ingredients by weight: 0.02-0.04 part of insect chitin, 0.01-0.03 part of vitamin premix, 0.05-0.07 part of epimeddium, 0.02-0.04 part of radix astragali, 0.02-0.04 part of medicated leaven and 0.02-0.04 part of tabasheer powder. The preparation method is characterized in that the main material can be mixed into a granular state, then the soup of the auxiliary materials is sprayed on the main material granules, and dried to obtain the product. The feed used for culturing freshwater shrimp is capable of promoting the full absorption of nutrition on the shrimps, preventing the generation of shrimp diseases, promoting the growth of the shrimp chitin and the efficacy of shelling, increasing the yield and reducing the feed coefficient.

The invention provides a Chinese herbal medicine feed additive capable of improving the immunity of a marine culture shrimp. The Chinese herbal medicine feed additive is prepared from the following components in parts by weight: 25-45 parts of rheum officinale, 20-30 parts of astragalus membranaceus, 20-30 parts of wolfberries, 5-10 parts of lysine, 8-19 parts of glycine, 20-30 parts of radix isatidis, 1-3 parts of betaine, 15-25 parts of herba epimedii, 1-5 parts of centipedes and 1-5 parts of kusnezoff monkshood leaves. According to the Chinese herbal medicine feed additive, a parasitic disease and a bacterial shrimp disease of the marine culture shrimp are effectively prevented, the integrated body immunity and the antioxidant ability of the marine culture shrimp are improved, and the taste of the marine culture shrimp is not affected by the additive.