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1040 results about "Crayfish" patented technology

Crayfish are freshwater crustaceans resembling small lobsters (to which they are related). They are also known as crawfish, crawdads, freshwater lobsters, mountain lobsters, mudbugs, or yabbies. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species such as Procambarus clarkii are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus.

Crayfish rice continuous-cropping breeding and planting technology

InactiveCN102369895ASolve the problem of idleness in winter and springSolve the idle problemClimate change adaptationPisciculture and aquariaContinuous croppingComing out
The invention relates to a crayfish rice continuous-cropping breeding and planting technology. The invention has the special technical key points that: the rice field, which has good water quality, sufficient water and no pollution source and is convenient to irrigate and drain, is selected to breed crayfish; the area of the rice field is properly over dozens of acres; feeding ditches are excavated in ridges; a crayfish rice continuous-cropping breeding and planting mode comprises three modes of throwing seed crayfish, throwing ovigerous crayfish and throwing young crayfish; according to the requirements of the three modes, the seed crayfish or the young crayfish are thrown sufficiently in one step; when a large number of young crayfish move, artificial feed such as minced fillet, scrambled screw clam meat and the like are fed properly; in winter, crayfish enter caves to live through the winter; in March of the next year, the crayfish come out again after water temperature rises again, wherein the water temperature is controlled by a method for adjusting water depth and is controlled to be 20 to 30 DEG C commonly; and the crayfish are caught at the end of March to at the end of May every year. By the technology, the rice field can be utilized completely to artificially cultivate the crayfish; the problem that the rice field leaves unused in rainy seasons of winter and spring is solved; and a wide prospect for farmers to achieve prosperity is achieved.
Owner:QIANJIANG NIUWANHU AQUATIC PROD CULTURE PROFESSIONAL COOP

Method for culturing crayfishes

The invention discloses a method for culturing crayfishes. The method includes the steps of 1, preparing a pond; 2, breeding young crayfishes, wherein 25 kilograms to 30 kilograms of young crayfishes are bred in per mu of the pond; 3, throwing feed, wherein animal feed is mainly thrown in April and May, vegetable feed is mainly thrown in June, July and August, and animal feed is mainly thrown in the period from the late September to the catching period; 4, controlling the water quality, wherein 15 cm to 20 cm of water is added per week; 5, preventing and treating diseases, wherein pond water is sterilized through quick lime at regular intervals, and the use amount for one-meter-depth water is 15 kilograms per mu; 6, carrying out catching at the right moment, wherein after the crayfishes lay eggs, when young crayfishes grow to have the weight ranging from 40 g to 50 g, the adult crayfishes are caught. According to the method for culturing the crayfishes, as the links such as the pond, the young crayfish breeding number, the feeding amount, the feeding time, the water quality, disease preventing and treatment and catching are reasonably controlled, injuries of natural enemies, diseases and the like to the crayfishes can be greatly reduced, the survival rate of the crayfishes is high, the growth speed is high, and the yield is high.
Owner:易述春

Novel crayfish and rice rotation breeding and planting method

The invention discloses a novel crayfish and rice rotation breeding and planting method. The method comprises the following steps: a crayfish fry pond and a breeding pond are built separately in the area ratio being 1:(4-10). Seed crayfish are put into the crayfish fry pond, and after crayfish fries are bred, the crayfish fries in the consistent specification (60-70 crayfish per jin) are caught and then put into the breeding pond in the density of 5,000-8,000 crayfish per mu. After the crayfish fries in the breeding pond grow to be 20 g or above, the crayfish fries are caught in a catch rotation manner that only large crayfish fries are caught, then crayfish fries are caught from the crayfish fry pond and put into the breeding pond after the large crayfish fries in the breeding pond are caught, and accordingly, the breeding density of the breeding pond keeps unchanged. After all the crayfish fries are almost caught, rice is planted in the breeding pond in the traditional planting density. The breeding density of crayfish can be well controlled, burst of diseases caused by high breeding density of the crayfish is avoided, and finally, high-quality commodity crayfish are obtained. The utilization rate of land is increased in the manner of catching and stocking rotation, and better benefits are obtained.
Owner:华山科技股份有限公司

Processing method of freshwater crayfish pre-prepared products

The invention discloses a processing method of freshwater crayfish pre-prepared products. The method includes the steps of firstly, selecting and grading; secondly, cleaning; thirdly, frying; fourthly, vacuum cooling; fifthly, soaking with seasoning liquids; sixthly, nitrogen-filled packing; seventhly, quick-freezing; eighthly, performing cold storage. The method has the advantages that the crayfish is soaked with special cleaning fluids to allow the crayfish to spit out dirt in the intestine line, and complex manual intestine line removing is avoided; high-temperature fast frying and special soaking with special seasoning liquids are used, and the difficulties that crayfish meat protein deteriorates easily, flavor substances lose easily and flavor cannot enter the crayfish in subsequent processing are solved; the vacuumizing and nitrogen filling freshness keeping technology is used, and the crayfish is prevented from being oxidized by oil acid during storage.
Owner:洪湖市万农水产食品有限公司

Stewed shrimps for health care and nourishment having effects of nourishing yin, strengthening yang and supplementing calcium

The invention discloses stewed shrimps for health care and nourishment having the effects of nourishing yin, strengthening yang and supplementing calcium. The stewed shrimps are prepared by the following steps of: selecting wildly fostered crayfishes and washing the crayfishes with clean water; cleaning the crayfishes; opening backs and removing bowels with a knife for later use; stirring and frying white sugar to be yellowish and pouring blend oil into a pan; putting ginger and seasonings for the health care and nourishment into the pan and stirring the materials slightly over small fire; adding flavorings into the pan; adjusting the fire to be big fire and putting the crayfishes into the pan; introducing the fire to burn the crayfishes to bright red with distilled spirit; adding broth to stew the crayfishes; adding gourmet powder or chicken essence; putting a little shallot and caraway into the pan; and taking the food out of the pan and placing the food in a bowl or a plate. The stewed shrimps for the health care and nourishment having the effects of nourishing yin, strengthening yang and supplementing the calcium overcomes the defect that the conventional crayfishes are usually stirred, cooked, steamed and fried directly so that the nutrition and the nourishment value of cooked crayfishes cannot be enhanced, can clear away harmful and toxic substances generated in the metabolic process of a human body and improve disease resistance of the organism, and has the effects of strengthening yang and blood, nourishing yin and conditioning the temperature, activating blood circulation to dissipate blood stasis, and removing pathogenic factors without any toxic or side effect.
Owner:周学海

Cross breeding method of Macrobrachium rosenbergu

The invention relates to method of crossbreeding the exotic fresh water crayfish, especially to method of crossbreeding the Luo shi swamp shrimp. The invention introduces the distant Luo shi swamp shrimp sprout A, mating the female parent shrimp and male parent shrimp of the distant Luo shi swamp shrimp sprout A with that of native breed and getting the cross cut B1+ and negative cross B1-; mating the cross cut B1+ and negative cross B1- with the native breed and getting the backcross B2++ of B1+, negative back cross B2+- of B1+, negative back cross B2-- of B1- and back cross B2-+ of B1-; breeding the backcross B2++ of B1+, negative back cross B2+- of B1+, negative back cross B2-- of B1- and back cross B2-+ of B1-. The survival rate and seed-accumulating rate of the four kinks of sprout is all good, the composition of water, coarse ash content, coarse protein, coarse fat content, amino acid and aliphatic acid is higher than that of native obviously by applying the technique in this invention, especially the breed-accumulating rate of the cross B2-+ of B1- is increased to 67.25%, the rate of emergence to 94.56%.
Owner:ZHEJIANG INST OF FRESH WATER FISHERIES

Shelling interphase crawfish feed and preparation method thereof

The invention provides a shelling interphase crawfish feed. The shelling interphase crawfish feed is prepared from the following components: corn flour, sorghum flour, wheat middling, peanut powder, shell powder, algae powder, fish meal, calcium hydrogen phosphate, compound vitamin, mineral composites and a core additive, wherein the core additive is prepared from the following components: houttuynia cordata, astragalus root, eucalyptus robusta, radix achyranthis bidentatae, selfheal, garlic, green tea and licorice. The feed can provide basic nutrients for crayfishes in shelling interphase, the algae powder and the core additive are added in the feed to greatly reduce the mortality rate of the crawfishes, and the shelling interphase crawfish feed is high in security, wide in raw material source and low in price.
Owner:广西润爽生态农业科技有限公司

High-yield freshwater crayfish culture method

The invention discloses a high-yield freshwater crayfish culture method. The high-yield freshwater crayfish culture method comprises the following steps: (1) selecting a regular even-bottom pond, exposing the selected pond to the blazing sun for 204 days and performing pre-treatment; (2) selecting and throwing crayfish seeds which are healthy and strong, complete in appendage, free from diseases and injuries, strong in vitality and identical in size into the pond; (3) planting aquatic plants in the aquaculture pond, placing a plurality of facilities for crayfishes to inhabit or hide in the crayfish pond; (4) regularly, qualitatively and quantitatively performing feeding; and (5) fishing for the crayfishes in 6-7 months and 11-12 months in a centralized manner, or fishing for the big and remaining the small, wherein fishing can be performed throughout the year. According to the high-yield freshwater crayfish culture method, the pond, the seed throw-in quantity, the feeding quantity and time, the water quality, fishing and the like are reasonably controlled to greatly reduce harms of natural enemies, germs and the like to the crayfishes, the crayfish survival rate and growing speed are high, the yield is high, and further, economic benefits are improved. The cultivated crayfishes are delicate in meat and delicious in taste, has rich nutrition, including protein and the like, and is unique in flavor.
Owner:凤阳徽亨商贸有限公司

Selenium-enriched organic compound fertilizer and its application in rice

The invention discloses selenium-enriched organic compound fertilizer and its application in rice. The fertilizer comprises, by weight, 60-80 parts of cow dung, 80-100 parts of horse dung, 20-40 parts of crayfish shell flour, 20-30 parts of plant ash, 40-60 parts of wheat straws, 20-30 parts of astragalus smicus powder, 30-40 parts of diatomite, 10-16 parts of potassium humate, 4-6 parts of sodium selenite, 6-8 parts of urea, 10-12 parts of calcium superphosphate, 10-14 parts of a microbial agent, 1-2 parts of magnesium sulfate and 800-1000 parts of water. In rice application, the fertilizer is diluted by water according to a mass ratio of 1: 500 and then is applied to the leaf surface in a heading period and a full heading stage. The organic compound fertilizer has the characteristics of organic selenium fertilizer and inorganic selenium fertilizer, improves the absorption and enrichment of selenium in rice, promote plant growth, produce effects fast and keep long-term fertilizer efficiency.
Owner:FOSHAN SANSHUI JIAXIN AGRI TECH RES INST GENERAL PARTNERSHIP

Feed for freshwater adult crayfishes

The invention provides a feed for freshwater adult crayfishes. The feed comprises the following components in parts by weight: 80 parts of plant bait, 10-20 parts of animal bait, 1-3 parts of vitamin mixture and 0.5-1 part of growth promoting agent, wherein the plant bait comprises the following components in parts by weight: 24-54 parts of bean cake, 5 parts of potato powder, 20-45 parts of wheat middling, 8-18 parts of corn powder, 2-4 parts of yeast powder, 1-3 parts of starch and 0.5 part of sunflower seed powder; and the animal bait comprises the following components in parts by weight: 4-9 parts of fish meal, 4-9 parts of bone meal, 5-6 parts of shell powder and 0.05-0.15 part of shelling agent. On the basis that the advantages of natural organic feeds are kept, the growth speed of the crayfishes is increased, the growth period is shortened, the income of a farmer is greatly increased, and the enthusiasm of the farmer is improved.
Owner:句容市欢欢龙虾专业合作社

Crayfish propagating and breeding method

The invention relates to a crayfish propagating and breeding method. The crayfish propagating and breeding method comprises the following steps of: (1), constructing a breeding pool; (2), putting parent crayfishes in a suitable place to breed; (3), feeding the parent crayfishes; (4), managing water quality; (5), propagating and hatching; (6), constructing a young crayfish culture pool; (7), putting juvenile crayfishes in a suitable place to breed; and (8), feeding the juvenile crayfishes. The crayfish propagating and breeding method disclosed by the invention is high in survival rate, high in yield and good in benefit.
Owner:广西赑益农业科技有限公司
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