1447 results about "Grass carp" patented technology

An efficient breeding method for crayfish in fresh water of a rice field is disclosed. The efficient breeding method for the crayfish in the fresh water of the rice field comprises the steps of: selecting the rice field which is sufficient in water source, convenient in irrigation and drainage, strong in water-retaining capacity, not dry when meeting with heavenly stems and not submerged by floods and has a good ecological environment, no pollution source around, fertile soil and a substrate natural structure; placing grass carp summer flower, bighead carp summer flower and field snails after the young crayfish is placed; filling decayed cow dung every half a month at a filling amount of 50-100 kg per each mu; checking submerged plant mow and filling aquatic plant every half a month; filling animal fodder such as fish meat and meat of spiral shells of 2-4 kg per each mu every week.

The invention discloses a method for detecting freshness of grass carp by using an electronic nose. The method comprises the following steps of: putting a grass carp sample to be detected into a sample container, and standing for 30 minutes; inserting a sample introduction needle of the electronic nose into the sample container at normal temperature, simultaneously inserting an air filter filled with active carbon into the sample container to balance air pressure, and starting the electronic nose to suck the gas emitted by the stood sample into an electronic nose gas chamber; detecting the gas emitted by the sample through a gas sensor array in the electronic nose gas chamber for 50 seconds; and acquiring data acquired by the gas sensor array, processing the acquired data, and assessing the freshness of the grass carp according to the data processing result. The method has the advantages of being simple in analysis process, low in sample consumption, accurate and low in cost, and easy to popularize.

The invention belongs to the field of feeds, specifically to a feed for grass carp. The feed for grass carp comprises the following components by weight: 10 to 40 parts of crude protein, 40 to 80 parts of corn gluten meal, 20 to 50 parts of peanut meal, 10 to 30 parts of vinasse, 1 to 4 parts of dicalcium phosphate, 5 to 15 parts of yeast powder, 1 to 5 parts of salt, 5 to 20 parts of a premix for grass carp, 2 to 8 parts of fish bone meal, 2 to 7 parts of an ecological preparation, 10 to 20 parts of cottonseed meal, 2 to 8 parts of housefly larva powder, 10 to 20 parts of wheat shorts, 2 to 7 parts of mineral elements, 2 to 9 parts of plant oil, 1 to 5 parts of a compound enzyme preparation, 1 to 4 parts of ferrous sulphate, 1 to 15 parts of tenebrio molitor, 5 to 15 parts of a Chinese herbal medicine additive and 2 to 8 parts of amino acid. Through feeding of grass carp with the grass carp feed containing plant extracts, feeds are saved, the quantity of reagents is reduced, feeding cost is lowered down, and grass carp breeding benefits are improved; the Chinese herbal medicine additive has a medicinal function, can improve immunity of grass carp, reduce generation of diseases in the process of breeding and decrease usage of medicaments and enables safe and reassuring grass carp to be produced.

The invention discloses an efficient feed breeding method for chicken lobsters. According to the method, a paddy field having the characteristics of sufficient water source, convenience in irrigation and drainage, high water retaining capacity, drought resistance on dry weather, flooding resistance, good ecological environment, freeness from surrounding pollution source, rich soil and natural substrate structure is selected, and ctenopharyngodon idellus, aristichthys nobilis fries, river snails and the like are put into the paddy field after juvenile chicken lobsters are stocked. As proved by comparison, by adding a compound microorganism fertilizer, rapid growth of chicken lobsters can be promoted, the content of EPA (Eicosapntemacnioc Acid) is increased, and diseases of chicken lobsters are reduced, chicken lobsters died due to diseases are reduced; and meanwhile, beneficial microorganisms in water bodies are increased, and the final quality is improved.

The invention discloses a stepped grass carp culture method. The method comprises specific steps as follows: (1) fishpond construction: a mountain stream which has the stepped terrain and has the fall of 3-5 m is selected, multiple first-stage culture fishponds are built in the highest position, multiple second-stage culture fishponds are built in next stepped areas of the first-stage culture fishponds, the first-stage culture fishponds and the second-stage culture fishponds are connected through sewerage systems, water absorbing ends of the sewerage systems are arranged in the first-stage culture fishponds, water draining ends of the sewerage systems are connected to the second-stage culture fishponds, multiple stages of culture fishponds are sequentially arranged layer by layer, and adjacent culture fishponds are connected through the sewerage systems; (2) fry release; (3) feeding and daily management. Slopes can be utilized skillfully for stepped culture, the natural selenium-rich water source drawn from a high mountain is used, the content of oxygen and selenium in the culture fishponds is kept, so that grass carp is strong, has less fat and tastes fresh and crisp, the growth period is short, and the yield is high.

The invention discloses a planting and breeding integrated ecological breeding method for a large fishpond. Famous and special breeding varieties such as common carps, golden carps, grass carps, chubs, penaeus vannawei, loaches, soft-shelled turtles, river crabs and the like are put in a suitable place to breed in a breeding pond; and the stocking ratio of herbivorous fishes to forage fishes to demersal residual feed animals by weight percentage is (35-40%) to (50-55%) to (10-15%). Proper biological varieties are selected according to biological requirements of ecological niches and cooperate to build an eco-friendly environment, forage grasses are planted for feeding the herbivorous fishes, the feces of the herbivorous fishes and a water body can produce primary biological baits, the primary biological baits are supplied to shrimps and secondary nutritional fishes, and organic detritus produced by the water body sinks to the bottom of water and is ingested by the demersal loaches, crabs and the like. At the same time, lotus roots and cane shoots are planted in the breeding water body and nutritive salt in the water body is removed for purifying the water, so that a novel high-efficiency energy-saving planting and breeding integrated ecological breeding mode is formed.

The invention discloses a pollution-free fresh water lobster breeding method which includes the steps that a pool is prepared, a greenhouse, an anti-theft facility and a water inlet/outlet pipe with a filtering screen piece are configured, water is injected after sunshine, water plants are planted after disinfection, slow-release nutrient substance and small shelters are put into the pool, the water temperature, dissolved oxygen and PH value of the pool are adjusted, then young lobsters are put into the pool, feeding is conducted according to different periods of the young lobsters, the water quality is improved at a fixed period, young grass carp and screws are put into the pool, and pollution-free fresh water lobsters are obtained. By means of the pollution-free fresh water lobster breeding method, an excellent growth environment is provided for the lobsters through algae, the slow-release nutrient substance and the small shelters, microorganism reagents and vitamin complex are put into the pool at a fixed period, the lobsters are fed according to different growth periods, quick growth of the lobsters is promoted on the basis of guaranteeing healthy and pollution-free lobsters, and the yield of the lobsters is increased.

The invention provides an ecological breeding method for grass carps. Natural pollution-free mountain spring water is adopted as a water source, biologically fermented feeds and grass feeds are adopted, an ecological system simulation mixed breeding mode is adopted for regulating the water quality, Chinese herbal medicinal preparations are used for preventing and controlling fish diseases, and the addition of any chemical in a breeding process is avoided. Therefore, finished product fish is fresh, tender, smooth and free of silt smell, and is an environment-friendly, pollution-free and high-quality aquatic product.

The invention provides pellet feed for grass carp, and the raw material and weight share are as follows: bean of 10 to 20 shares, rapeseed cake of 15 to 25 shares, cottonseed cake of 10 to 20 shares, wheat bran of 10 to19 shares, secondary flour of 10 to 15 shares, rice bran of 10 to 20 shares, fishmeal of 3 to 6 shares, stone dust of 1 to 2.5 shares, salt of 0.1 to 0.5 shares, dry cactus powder of 0.4 to 0.6 shares, dry aloe powder of 0.3 to 0.5 shares, dry garlic powder of 0.1 to 0.3 shares and probiotics preparation of 0.2 to 0.6 shares. The preparation method for pellet feed is as follows: the raw material is firstly taken out and weighted and then crushed into powder, and then is stirred and mixed, finally, mixture is made into pellet feed which is the finished product. Pellet feed is rich in nutrient, the grass carp grows fast after eating pellet feed, the cost of raising the grass carp is greatly reduced and the immune function of the grass carp is greatly improved. The disease prevention, medical treatment and anti-virus capability of the grass carp are also enhanced.

The invention discloses an ecological high-yield circulating breeding system and method. The system is characterized by comprising a plurality of fish breeding pools (1) of the area ranging from 200 square meters to 700 square meters, a sealed greenhouse (2) is arranged on the fish breeding pools, an air inlet is formed in one end of the greenhouse, an air supply device (3) is additionally arranged on the air inlet, an air outlet is formed in the other end of the greenhouse, natural water drainage openings (6) are formed in the bottoms of the fish breeding pools, and water supplementing pumps (4) are installed on the periphery of the fish breeding pools and are communicated with a circulating water source (5). By means of the system and method, the green ecological circulation is achieved, no chemical medicine is used in the whole system or the whole breeding process, full-food-chain recycling is achieved for waste water and excrement produced during fish breeding, the commercial high-yield breeding that 50,000 kilograms of snakehead and 25,000 kilograms of bass are produced per year can be achieved, grass carp, chub, yellow catch eel and other high value-added aquatic products can be produced, and meanwhile, completely-green organic rice, fish, shrimp, crab and other by-products high in economic value can be produced in paddy fields.

The invention provides an artificial compound feed for resisting fatty liver of grass carp. The artificial compound feed consists of the following components in part by weight: 1 to 5 parts of yeast powder, 5 to 10 parts of bean pulp, 30 to 40 parts of rapeseed meal, 5 to 15 parts of cottonseed meal, 10 to 15 parts of wheat, 5 to 15 parts of DDGS (distiller dried grains with soluble), 0.5 to 2 parts of monocalcium phosphate, 5 to 15 parts of unite bran, 0.5 to 2 parts of soya-bean oil, 1 to 10 parts of bentonite, 0.1 to 0.3 part of choline chloride, 0.5 to 2 parts of multi-dimensional multi- mineral premix, 0.01 to 0.05 part of antioxidant, 0.1 to 0.3 part of edible salt, 0.05 to 0.3 part of mildewproof agent, 0.01 to 0.05 part of methionine, 0.1 to 1 part of soya bean lecithin, 0.02 to 0.2 part of bile acid, and 1 to 3 parts of oriental wormwood. The artificial compound feed can effectively reduce huge economic loss caused by fatty liver disease of the grass carp.

The present invention relates to the technical field of aquaculture and particularly relates to a grass carp feed and a preparation method thereof. The grass carp feed is prepared from the following raw materials by weight: 90% of basic feed, 8% of Chinese herbal medicinal additives and 2% of a growth accelerator. The basic feed includes rice bran, rapeseed meal, wheat bran, soybean meal and distillers' grains. The Chinese herbal medicinal additives include herba houttuyniae, wild chrysanthemums, radix bupleuri, radix puerariae, rhizoma atractylodis macrocephalae, poria cocos, radix ophiopogonis, haws, garlic powder, radish seeds, etc. The growth accelerator includes shrimp shell powder, fish meal, earthworm powder, compound vitamins, amino acids, sucrose, etc. The grass carp feed is comprehensive and balanced in nutrition, can fully satisfy the growth demands of the grass carps and improves the quality of the grass carps. The Chinese herbal medicinal additives can improve the nutritional structures of the feed, enhance immunity, prevent and treat a variety of fish diseases, and can reduce the morbidity and mortality of the grass carps under the condition of not using any antibiotic drugs. The growth accelerator can improve the digestion and utilization rates of the feed, and promote the growth of the grass carps.

The invention discloses a construction and stock breeding method for cultured grass carp families. The method comprises the following steps of: selecting grass carps which move actively and have high heritability and of which the weight is 15 to 20 percent more than the average weight, as parent fishes; marking cultured grass carps by using periodic interrupt timer (PIT) electronic labels, after sexual gland is matured, facilitating maturation by using hormone solution, performing artificial insemination on female and male parent fishes to obtain oosperm, performing self-hatching, then growing seedlings, breeding fishseed, breeding one-year fishes, feeding respectively, and establishing the families; from the second year to maturation time, injecting the PIT electronic label into the grass carps with the different families; performing mixed culture in a same pond, and eliminating the inferior grass carps, wherein the rest families are the basic families for next generation breeding; the young grass carps, the one-year grass carps, two-year grass carps, three-year grass carps and four-year grass carps are a critical period of family breeding; preferably choosing, and establishing the families serving as backup parent fishes; and then matching teams, raising the seedlings and then breeding continuously. A new product with high quality, high yield and stable yield is bred by establishing the different families of the cultured grass carps; and the method is used for researching the genetic characteristic and breed differentiation conditions by mating the male and female fishes among the grass carp families and inbreeding the male and female fishes in the grass carp family.

The invention relates to a process for preparing minced fish food and products by using meat of fresh water fish such as silver carp, grass carp as raw material, and table salt, modified starch, konjac glucomannan, white sugar, smell removing agent as auxiliary material. The preparing process comprises smell removing, freezing point adjustment, germ-free cooling down, air regulation packaging, and ice temperature storage.

The invention relates to a preparation process and a sterilization method for instant flavor fish. The preparation steps are as follows: removing scale, viscera, the head, the tail and fishbone from a 1.5 to 2kg fresh grass carp, and cleaning, draining and dividing the grass carp into fish blocks of about 2cm in width; salting the fish blocks with 2%(w/w) salt, 1%(w/w) white spirit and 1%(w/w) white vinegar at the temperature of 5 DEG C for 3h by using a low-temperature dry salting method; drying the fish blocks with hot air at the temperature of 50 DEG C for 18-24h; seasoning with 2%(w/w) plant oil, 1%(w/w) horseradish, 5%(w/w) pickled pepper and natural flavor (including cassia, star anise, fennel, amomum tsao-ko, radix glycyrrhizae and Chinese red pepper) in an appropriate amount; performing vacuum packing; and irradiating the fish blocks with a 1.11*106Bq cobalt source for sterilization, wherein the irradiation dose is 3kGy and the irradiation temperature is normal temperature. Compared with the traditional high-temperature and high-pressure sterilization, and the product irradiated for sterilization is reduced in color and increased in hardness and chewiness, the content of hydrolysis amino acid is basically the same, and the quantity of each microbe is less than 10cfu/g, this shows that the fish product irradiated for sterilization is better in sensory quality and physical and chemical quality, and more suitable for sterilization of the flavor fish.

The invention relates to a feed additive and a preparation method thereof, in particular to a traditional Chinese medicine microecological preparation and a preparation method thereof. The traditional Chinese medicine microecological preparation for preventing and treating enteritis of grass carp comprises the following components in percentage by weight: 25-35% of bacillus subtilis, 30-40% of bacillus aceticus and 20-35% of clostridium butyricum. In the invention, the traditional Chinese medicine extracting solution is used for culturing microbes, and the cultured microecological preparationcontains rich polysaccharide components, probiotics and metabolite thereof of acalypha australis, polygonum bydropiper L., purslane and the like. The compound traditional Chinese medicine microecological preparation as the feed additive can be used as a substitute for antibiotic, and the additive prepared into the feed of the grass carp is green and safe, can prevent and treat the enteritis of the grass carp, enhances the immunity and disease resistance, can improve the conversion rate of the feed, and is favorable for purifying water and protecting and improving the ecological environment.

The invention relates to a fishway inlet system luring grass carp, a design method of the fishway inlet system luring the grass carp and a fish luring flow speed calibration device. The fishway inlet system luring the grass carp comprises a fishway arranged in the flow direction of a river and a fishway inlet of the fishway. One side of the fishway and one side of the fishway inlet are close to the river bank on one side of the river. The other sides of the fishway and the fishway inlet are provided with a fish luring water flow channel and a fish luring water flow channel water outlet, wherein the fish luring water flow channel and the fish luring water flow channel water outlet are identical with the fishway and the fishway inlet in direction. According to the fishway inlet system luring the grass carp, the design method of the fishway inlet system luring the grass carp and the fish luring flow speed calibration device, only one stream of fish luring water flow needs to be arranged, and a water flow condition of luring fishes can be created through cooperation of the fish luring water flow and the fishway water flow. Only two water flow parameters need to be calibrated and are the optimum flow speed of the fishway inlet and the optimum rate of the flow speed of the fish luring water flow channel water outlet to the flow speed of the fishway inlet. Compared with other water flow fish luring methods, the two water flow parameter values are definitely provided. The fishway inlet is simple in water flow form and small in project amount. The design method of the fishway inlet system luring the grass carp can be not only directly used for hydraulic design of the fishway inlet for the grass carp but also conveniently popularized to design of fish luring water flows of fishway inlets for other fishes.

The invention discloses health-care grass carp fingerling feed. The health-care grass carp fingerling feed is characterized by the following components: green alfalfa whole plant powder, green soybean whole plant meal, ryegrass powder, soybean meal, peanut meal, wheat bran flour, corn meal, fish meal, pupa powder, bone and meat meal, spirulina powder, carrot powder, edible salt, calcium dihydrogen phosphate and Chinese herbal additives. The grass carp fingerling feed can increase the survival rate of grass carp fingerling in the grass carp fingerling cultivating state effectively, promote the grass carp fingerling to grow healthily, protect the grass carp fingerling from liver and gallbladder discomfort, and expel pests in an intestinal canal of the grass carp fingerling, so that adverse phenomenon caused by large-scale use of chemical drugs in the grass carp fingerling cultivating stage is avoided, the immune function of the fish body is improved and a high-quality and healthy grass carp fingerling is provided for cultivation of adult grass carps.

The invention provides a compound feed for young grass carps, which relates to a feed for aquatic animals, in particular to a feed for fishes. The compound feed comprises the following raw materials in mass percent: 5-15% of steamed fish meal, 20-30% of strong flour, 15-25% of bean pulp, 4-8% of soybean protein concentrate, 1-4% of pea protein powder, 8-15% of peanut meal, 15-25% of rapeseed meal, 1-3% of fish oil, 1-3% of bean oil, 0.1-0.3% of choline chloride, 1-2% of calcium biphosphate, 0.1-0.2% of garlicin, 0.1-0.2% of glucan, 0.5-1.0% of zeolite powder, 1-3% of wheat shorts, 0.2-0.3% of compound vitamin and 2-4% of compound mineral. Compared with the prior art, the feed product of the invention has balanced nutrition, can meet the requirement of young grass carps for nutrition in the process of growth, has good palatability and high feed intake rate, has good stability in water, and can not pollute the water quality of aquaculture water easily.

The invention relates to a comprehensive utilization method for grass carp harslet, which belongs to the technical field of aquatic product processing. The method mainly comprises the following steps: the grass carp harslet is washed to be clean, subjected to deordorization treatment by mixed solution of acetic acid, sodium chloride and sodium sulfite, smashed, subjected to trypsin enzymolysis and centrifugation, and separated to obtain upper coarse fish oil; refined fish oil can be prepared by refining coarse fish oil; and lower enzymatic hydrolysate is subjected to vacuum filtration, secondary debitterizing and deordorization by active carbon, and spray drying to obtain fish protein polypeptide powder and amino acid powder, wherein the polypeptide powder mainly contains dipeptide and tripeptide, is rich in a plurality of mineral elements, is easy to be digested and absorbed by the intestinal tract, and is high-quality nutriment; and the amino acid powder contains complete varieties of amino acid, and can be an additive of various amino acid nutrition-enriching products. The comprehensive utilization method has mild technological conditions, has extraction efficiency as high as 90 to 95 percent, fully utilizes harslet waste during processing grass carp, changes waste into valuable, and greatly improves economic benefit.

The invention provides an SNP marker related to the sugar tolerance of grass carps and application of the SNP marker. The SNP marker comprises two SNP loci, namely H3 and H4, wherein H3 is located at position 1817 from the 5' end of the nucleotide sequence shown as SEQ ID NO:1 in the specification, and base at the position 1817 is T or C; H4 is located at position 1818 from the 5' end of the nucleotide sequence shown as SEQ ID NO:1 in the specification, and base at the position 1818 is G or T. The SNP marker provided by the invention is closely related to the sugar tolerance of the grass carps, and can be effectively used for identification or selective breeding of high-sugar-tolerance grass carp species.

The invention provides grass carp feed and a making method thereof, and relates to the field of fish feed. The grass carp feed comprises, by weight, duckweed, folium isatidis, rice bran, wheat bran, corn flour, bean pulp, vinasse, fish meal, feed yeast, Chinese herbal medicine additives, methionine chelated copper, lysine chelated zinc, arginine chelated magnesium, leucine chelated iron, tryptophan chelate, vitamin E, monocalcium phosphate and water. The grass carp feed is reasonable in matching, the protein content is 30-35%, the carbohydrate content is 38-60%, and the grass carp feed also contains rich vitamins, amino acid and the like, so that the nutritional requirements of crucian carps in the growing period are met, growth of fishes is effectively promoted, the growing speed of crucian carps is increased, the body form becomes much better, meat quality is obviously improved, and high disease resistance and safety are achieved.

The invention relates to the technical field of aquaculture, and specifically relates to grass carp feed containing Chinese herbal medicines. The feed is prepared by the following raw materials by weight: 45-50 parts of corn, 20-22 parts of rye bran, 8-10 parts of fried sunflower seeds, 20-25 parts of soybean meal, 15-18 parts of peanut straws, 12-15 parts of wheat middlings, 3-4 parts of calcium hydrophosphate, 6-8 parts of watermelon peels, 5-6 parts of pumpkin seeds, 8-10 parts of potamogeton distinctus, 8-10 parts of corn tender leaves, 1-2 parts of radix scutellariae, 1-2 parts of radix isatidis, 1-2 parts of radix bupleuri, 0.5-1 part of rheum officinale, a proper amount of salt and 4-5 parts of a phagostimulant. In the prepared grass carp feed, plants such as watermelon peels and potamogeton distinctus that the grass carp likes are added to basic raw materials, thereby increasing palatability of the feed. The Chinese herbal medicines can enhance disease-resistant and bacterium-resistant capacities of the grass carp, so that use of chemical medicines is prevented. The grass carp fed by the feed has enhanced immunocompetence, effectively reduced morbidity, obviously increased in weight and is active in appetite.

The invention relates to a feed additive of aquaculture industry, in particular to a meat quality flavor modifying agent for grass carp or carp and a preparation method thereof. Each kilogram of modifying agent comprises the following components: 30 to 50g of seaweed extract, 10 to 20g of combination of inosinic acid and guanylic acid, 20 to 30g of carnitine, 15 to 30g of glycin, 10 to 20g of alanine and the balance of zeolite powder. The preparation method comprises the following steps: firstly, crushing solid materials in the seaweed extract, the combination of inosinic acid and guanylic acid, the carnitine, the glycin, the alanine and the zeolite powder materials and sieving the crushed solid materials through a sieve with 80 to 100 meshes for later use; and secondly, mixing and stirring the crushed solid materials in the proportion to ensure that the coefficient of variation CV of the uniformity is less than 5 percent to obtain the product. The modifying agent can effectively improve protein content, content of total amino acids, content of essential amino acids and content of delicious amino acid in muscles of the grass carp and the carp.