33 results about "Hypophthalmichthys" patented technology

The invention discloses a rice and soft-shelled turtle mixing planting and breeding method capable of stabilizing the grain income and increasing the fishery income. The method includes the following steps: selecting a rice field, increasing the height and the width of ridges, reinforcing the ridges, and additionally arranging escape-proof facilities; digging a pond and circular furrows, and allowing communication between the pond and the furrows; arranging feeding tables and sun tables in the rice field; selecting rice seeds, sowing the rice seeds, and transplanting rice seedlings; putting young soft-shelled turtles into the rice field in the last ten-day of June after the young soft-shelled turtles are disinfected; putting Bellamya quadrata into the rice field, breeding Hypophthalmichthys molitrix and sharksucker in the pond; throwing fodder on the feeding tables to feed the turtles at 18 o'clock every day, wherein the feeding amount is 0.5-1% of the body weight of the turtles; hanging insect-attracting lamps above the feeding tables, turning on the insect-attracting lamps to attract insects from 8 o'clock in the evening to 12 o'clock at nighttime; performing daily management; and harvesting rice and the turtles. The rice and soft-shelled turtle mixing planting and breeding method can cultivate the rice and the turtles together, is low in technical difficulty, is small in investment, is low in breeding risk, and is high in return rate.

The invention belongs to the technical field of phospholipid extraction with a large amount of cultured freshwater fishes and particularly relates to a method for extracting phospholipid from heads of hypophthalmichthys molitrix and a product of the method. The method includes steps: 1) chopping cleaned heads of hypophthalmichthys molitrix into square fragments with the side length being 1-2cm; 2) mixing the fragments with ethanol with the volume fraction being 95% according to a mass volume ratio of 1:10-1:20 to obtain to-be-treated products; 3) subjecting the to-be-treated products to high-speed crushing of the fragments in a flash extraction device to obtain serous fluid; 4) filtering the serous fluid to obtain ethanol extract; 5) removing ethanol from the ethanol extract, mixing with acetone according to a mass volume ratio of 1:5-1:10, centrifuging, removing acetone supernatant, and removing residual acetone to obtain a finished product. High-efficiency extraction of the phospholipid from the heads of the hypophthalmichthys molitrix is realized by an extremely simple technical process, efficient process control and adoption of easily-acquirable extracting solution harmless to extract components.

The invention discloses organic detritus cenobium bait for hypophthalmichthys nobilis and a preparation method of the bait, and relates to the technical field of fishing feeds. The bait comprises the following components in percentage by weight: 45-75% of fermented chicken manure, 9-21% of fermented rapeseed meal, 2-8% of chlorella powder, 2-8% of brewer grain, 0.6-1.4% of algae growth prompting microelements, 2-6% of a phagostimulant and 4-16% of a premix. The preparation method of the product comprises the following steps: fermenting, drying and crushing the chicken manure and the rapeseed meal, and mixing the prepared fermented chicken manure, fermented rapeseed meal and other components so as to obtain the bait. The invention aims at providing the organic detritus cenobium bait for the hypophthalmichthys nobilis and the preparation method of the bait, and by adopting the bait, not only is the acre yield of the hypophthalmichthys nobilis increased, but also the secondary pollution on aquatic water is reduced.

The present invention discloses a fish skin ham sausage preparation method using ictalurus punctatus skin and the preparation method which uses ictalurus punctatus skin and frozen hypophthalmichthys molitrix surimi as raw materials to prepare the fish skin ham. The preparation method is as follows: firstly thawing fish skin, dicing, marinating for the next step, and secondly thawing the frozen hypophthalmichthys molitrix surimi, adding accessory ingredients, chopping, and finally adding fish skin grains at a certain percentage, mixing evenly, vacuum pumping, and filling ham sausage, sterilizing, cooling and preparing finished products. The method maintains the original flavor of the fish meat sausage, at the same time improves taste and nutritional value enriches the variety of the ham sausage, and provides a new way for the use of ictalurus punctatus.

The present invention discloses a preparation method of instant hypophthalmichthys molitrix fillets. The preparation method of the instant hypophthalmichthys molitrix fillets comprises the following steps of raw material pre-treating, deodorizing, steaming, pickling, oil-frying, drying and sterilizing. The provided preparation method of the instant hypophthalmichthys molitrix fillets can effectively remove earthy smell in hypophthalmichthys molitrix fleshes, reduces damages to texture of the hypophthalmichthys molitrix fleshes in processing processes, keeps original mouthfeel of the hypophthalmichthys molitrix fleshes, so that the products are fragrant, crisp and tasty, sour, sweet and spicy, fragrant in fish smell, and convenient and safe in consumption.

The present invention discloses a nutritional hypophthalmichthys molitrix feed which is produced by mixing and blending the following raw materials in parts by weight: 150-200 parts of sweet potato vines, 80-100 parts of wheat bran, 50-80 parts of dried bean dregs, 40-60 parts of cardamine hirsuta powder, 40-50 parts of dicliptera chinensis powder, 30-50 parts of wild amaranthus tricolor powder, 30-50 parts of polygonatum odoratum powder, 20-35 parts of marsilea quadrifolia meal, 2-5 parts of calcium dihydrogen phosphate, 20-30 parts of peanut meal, 1-3 parts of compound minerals, and 35-60 parts of potamogeton malaianus powder. The common plant of the sweet potato vines is used as a main ingredient and the wide plants with medicinal values are combined. The fed hypophthalmichthys molitrix is strong in immune system, is delicious in meat quality, and not only can satisfy people's taste, but also is conducive to people's health.

The invention provides feed for hypophthalmichthys molitrix and its preparation method. The feed is composed of corn, millet, peanut cake, shrimp powder, kelp powder, salt, fish oil, multi-vitamins, multi-minerals and additives. The preparation method includes the steps that firstly, the additives are extracted, additive extract powder is obtained through preparation, then the powder is mixed with the remaining components, after thorough and uniform stirring is conducted, puffing is conducted, granulation and drying are conducted, and the feed is obtained. The feed is applied to breeding of hypophthalmichthys molitrix, abundant nutrient substances can be provided for growth of hypophthalmichthys molitrix, the body immunity of the hypophthalmichthys molitrix can be effectively improved, water pollution is not caused after the long-term consumption of the feed, and the feed has a high application value.

The invention discloses a high-efficiency breeding method of grass carp, and relates to the technical field of aquaculture. The method comprises the following steps: step 1, construction and transformation of a pond; step 2, pond treatment; step 3, stocking of fry; step 4, feed throwing; step 5, breeding management; step 6, regulation and control of water quality; and step 7, proper fishing. According to the method disclosed by the invention, on the basis of zero water exchange of aquaculture water, carbohydrates are artificially added, so that mass propagation of endogenous microorganisms inthe water in the pond is promoted; and the endogenous microorganisms are utilized to assimilate inorganic nitrogen, the endogenous microorganisms are converted into mycoprotein, so that harmful nitrogen sources such as ammoniacal nitrogen and nitrite nitrogen in the culture pond are reduced, and the water quality environment of the culture pond is improved; and meanwhile, heterotrophic bacteria are subjected to further flocculation to form microbial flocculation clusters, the microbial flocculation clusters are eaten by carp and hypophthalmichthys molitrix, and the method has the effects of regulating and controlling water quality, promoting recycling of nutrients and improving a survival rate of the grass carp on the basis of water saving, energy saving and emission reduction.

The invention discloses an environmental-friendly and economical type hypophthalmichthys molitrix feed and a production method thereof. The environmental-friendly and economical type hypophthalmichthys molitrix feed is prepared from the following raw materials in parts by weight: 150-200 parts of out-of-date biscuits, 130-180 parts of out-of-date bread, 120-150 parts of out-of-date shrimp tasted bars, 120-140 parts of out-of-date potato chips, 80-100 parts of fish meal, 70-90 parts of bean, 20-30 parts of rice bran, 50-60 parts of silages, 15-20 parts of chicken bones, 5-10 parts of fish maws, 10-15 parts of shrimp heads, 5-10 parts of crab shells, 25-30 parts of Chinese cabbages, 20-25 parts of ipomoea aquatica forsk, 15-20 parts of turnip leaves, 10-15 parts of glutinous rice, 8-12 parts of black rice, 5-8 parts of millets, 2-3 parts of sesames, 4-5 parts of jasmine flowers, 1-2 parts of ginkgo kernels, 2-3 parts of angelica dahurica, 2-3 parts of pericarpium citri reticulatae, 3-4 parts of cinnamons, 1-2 parts of white pepper, 20-30 parts of seaweed meal, 10-15 parts of a phagostimulant and a suitable amount of water. The feed has the greatest feature that the out-of-date products and wastes including the chicken bones, the fish maws and the shrimp heads are creatively reutilized so that the wastes are changed into valuable things, and furthermore, the resources are saved and the pollution is reduced; and the reasonable utilization and the green circulation of the wastes are realized.

The invention relates to a general microsatellite multiplex fluorescent PCR method for hypophthalmichthys molitrix and hypophthalmichthys nobilis and belongs to the technical field of aquatic animal germplasm identification in the aquaculture field. The method comprises the steps: firstly, collecting hypophthalmichthys molitrix and hypophthalmichthys nobilis pterygiophore samples; utilizing a traditional phenol-chloroform method to extract genome DNA; according to primer pairs referred to by a target amplified fragment length difference requirement, choosing 3 groups of quadruple PCR systems with clear amplified bands; totally referring to 12 microsatellite markers; finally, performing fluorescence decoration and amplification verification on the primer. The multiplex PCR method disclosedby the invention has the characteristics of quickness in operation, convenience in implementation, low cost and the like and can provide a novel molecular marker assistive technology for researches ofhypophthalmichthys molitrix and hypophthalmichthys nobilis germplasm genetic evaluation, family breeding and the like.

The invention relates to a multi-species pond polyculture method of penaeus vannamei, adopting polyculture of penaeus vannamei and macrobrachium rosenbergii, pelteobagrus fulvidraco / clarias fuscus and hypophthalmichthys molitrix, and provides a specific polyculture ratio and culture method. The multi-species pond polyculture method of the penaeus vannamei well solves problems that the penaeus vannamei is easy to be ill, mortality rate is high, and benefits are unstable, the multi-species polyculture can effectively utilize breeding space, the macrobrachium rosenbergii, the pelteobagrus fulvidraco and the clarias fuscus can eat weak and sick prawns, prawn diseases can effectively be controlled, the hypophthalmichthys molitrix can eat cyanobacteria to regulate water quality, input cost of bait is reduced, a self-purification ability of a water body is enhanced, and ecological benefits are remarkable. According to the multi-species pond polyculture method of the penaeus vannamei, the survival rate of the penaeus vannamei is high, the scale is large, the macrobrachium rosenbergii, the pelteobagrus fulvidraco / the clarias fuscus with higher economic value are harvested, and economic benefits are considerable.

The invention discloses a hypophthalmichthys molitrix feed with rich nutrition and a preparation method of the hypophthalmichthys molitrix feed. The hypophthalmichthys molitrix feed is prepared from the following raw materials in part by weight: 20-30 parts of corn stalks, 20-30 parts of cottonseed meal, 20-30 parts of hawthorns, 30-40 parts of bean pulp, 20-30 parts of rapeseed meal, 10-20 parts of bone meal, 1-3 parts of vitamin C, 4-6 parts of vitamin B, 4-6 parts of folic acid, 10-20 parts of largehead atractylodes rhizome, 10-20 parts of radix codonopsis, 10-20 parts of cloves, 8-10 parts of common monkshood mother roots, 10-12 parts of peanut oil, 8-10 parts of egg white, 10-12 parts of table salt, and 300-400 parts of water. The hypophthalmichthys molitrix feed is prepared by the steps of crushing, mixing, baking, granule formulation and the like. The hypophthalmichthys molitrix feed is rich in nutrition, has good mouthfeel, and can meet the nutritional requirement of the hypophthalmichthys molitrix in a growing period after being eaten by hypophthalmichthys molitrix, the growth speed of the hypophthalmichthys molitrix is increased by 30%, the body shape of the hypophthalmichthys molitrix is improved, the meat quality is improved, and the disease resistance is enhanced.

The invention discloses a method for obtaining a molecular marker related to a malformation trait of gynogenesis hypophthalmichthys nobilis and application of the molecular marker. The molecular marker is obtained from a 2b-rad simplified genome of the gynogenesis hypophthalmichthys nobilis, and is located in the 3'UTR of a rgs7a gene. The nucleotide sequence of the molecular marker is shown in SEQ ID NO:2, and an allelic mutation (G / A) exists a 531-position base of the sequence. The screened molecular marker is used to carry out association analysis on the malformation trait of the gynogenesis hypophthalmichthys nobilis, and can be applied in the auxiliary selection of the malformation trait of the gynogenesis hypophthalmichthys nobilis and body type breeding of the hypophthalmichthys nobilis.

The present invention discloses a carassius auratus roe soup dumpling and a production method thereof. The dough skin of the carassius auratus roe soup dumplings are embedded with fresh seasoned carassius auratus roes, and the fillings are prepared by mixing brewed carassius auratus soup, complete seasoned hypophthalmichthys molitrix fish vesicles and medium rare fried streaky pork; the hypophthalmichthys molitrix fish vesicles are pickled by cooking wine before mixing, and the brewed carassius auratus soup is filled into a mold with each cell having a volume of 20 ml and frozen to be carassius auratus jelly; the dough skin has a diameter of 5 cm, and includes an inner filling loading part and an outer bonding part, the bonding part has a thickness of 0.6 mm, and the filling loading part has a thickness of 1.2 mm; when stuffing, firstly adding one part of hypophthalmichthys molitrix fish vesicles and 15 g of streaky pork to the filling loading part of each dough skin, then adding one cell of carassius auratus jelly, and finally squeezing the dough skin to be pleated steamed stuffed buns, putting into a wooden steamer and steaming for 10 minutes. The carassius auratus roe soup dumplings stand firm and do not collapse, the plump and bright-colored carassius auratus roe matched with the pliable hypophthalmichthys molitrix fish vesicles are refreshing and smooth in the mouth and have plump delicious taste.

The invention provides an ecological co-cultivation method for fishes and Chinese mitten crabs. The method comprises the following steps: (1) establishing a culture pond: selecting a culture pond withan area of 5-8 mu, wherein the culture pond includes a Chinese mitten crab culture area and a fish culture area, the fish culture area is located at the outer periphery of the Chinese mitten crab culture area, and an isolation net for preventing the Chinese mitten crabs from escaping is arranged between the fish culture area and the Chinese mitten crab culture area; (2) planting plants: plantingzizania aquatica and lotus roots at the bottom of the fish culture area, and planting common duckweeds and trapa bispinosa at the water surface of the fish culture area; and arranging an ecological floating bed on the water surface of the Chinese mitten crab culture area, and arranging Chinese pennisetum alopecuroides on the ecological floating bed; (3) throwing young Chinese mitten crabs and fry:throwing the young Chinese mitten crabs into the Chinese mitten crab culture area, wherein when the young Chinese mitten crabs are thrown, the water temperature is 10-20 DEG C, the breeding density is 400-500 river crabs per mu, and the specification is that every crab is 65-75g; and throwing the fry to the fish culture area, wherein carps are 120-130kg / mu, hypophthalmichthys molitrix is 20-24kg / mu; and (4) performing feeding management: feeding the crabs and the fishes regularly every morning and evening, and feeding the fishes with fish feed, feeding the crabs with crab feed. The method provided by the invention can simultaneously improve the survival rates and yields of the fishes and the crabs.

The invention discloses feed processed with vinegar for Hypophthalmichthys molitrix. The feed comprises the following raw materials in parts by weight: 200-400 parts of soybean meal, 150-300 parts of Saccharomyces cerevisiae, 0.01-0.1 part of tyrosol, 1-2 parts of palmitic acid, 150-250 parts of corn flour, 100-200 parts of wheat middlings, 50-100 parts of cellulose, 10-30 parts of carboxymethyl cellulose, 10-20 parts of calcium dihydrogen phosphate, 10-20 parts of L-lysine hydrochloride, 10-20 parts of DL-methionine, 10-20 parts of fish oil, 5-15 parts of a complex vitamin preparation , 5-15 parts of a complex mineral matter, 10-30 parts of vanilla, 10-30 parts of licorice, 10-30 parts of codonopsis roots, and 10-30 parts of Chinese angelica. The feed has complete nutrition, and has the effects for accelerating growth speed of Hypophthalmichthys molitrix, enhancing immunity of Hypophthalmichthys molitrix body, improving disease resistance and feeding rate of Hypophthalmichthys molitrix, and at the same time, improving digestion and absorption rate of the feed.

The invention belongs to the technical field of aquaculture breeding and in particular relates to a breeding method for rapid growth hypophthalmichthys molitrix and application of the breeding method.The breeding method comprises the following steps: selecting sexually mature male and female individuals of hypophthalmichthys molitrix which grows rapidly and large in size, breeding male individuals of Xingguo red hypophthalmichthys molitrix, and performing spawning induction; performing inheritance inactivation on sperms of the Xingguo red hypophthalmichthys molitrix, mixing the sperms with eggs of female hypophthalmichthys molitrix, and performing artificial insemination; performing gynogenesis treatment on zygotes after insemination; performing low-temperature shocking, and performing incubation at normal temperature so as to obtain fries; culturing a generation F1 till sexual maturity, performing secondary gynogenesis on female individuals which grow rapidly and good in body shapes,and breeding fries of a generation F2 according to families; performing mating and reproduction on female individuals and male individuals which grow rapidly and good in body shapes in the generationF2 so as to obtain fries of a generation F3, and constructing different pure lines of the families; performing culture, and performing growth comparison experiments on different pure lines, so as toobtain rapid growth hypophthalmichthys molitrix on the basis of the growth comparison experiments. The method is simple and feasible, and compared with a conventional breeding method, the method is capable of effectively shortening breeding cycles and is high in success rate.

The invention discloses healthcare feed for hypophthalmichthys molitrix. The healthcare feed is prepared from, by weight, 30-35 parts of fish, 20-25 parts of shrimps, 10-15 parts of insects, 10-15 parts of earthworms, 10-12 parts of zooplankter, 15-25 parts of bran, 12-18 parts of corn, 15-20 parts of wheat, 18-24 parts of sweet potatoes, 16-25 parts of algae, 8-10 parts of radix codonopsis, 10-12 parts of radix glycyrrhizae, 8-10 parts of bitter apricot seeds, 6-9 parts of radix platycodonis, 5-7 parts of herba ephedrae, 10-13 parts of purple perilla, 6-10 parts of calculus bovis, 8-11 parts of pearls, 8-10 parts of vitamin C and 16-24 parts of animal viscera. In this way, the healthcare feed for the hypophthalmichthys molitrix can improve the immunity of the hypophthalmichthys molitrix, promote growth of the hypophthalmichthys molitrix and improve the nutrition value of the hypophthalmichthys molitrix, and the hypophthalmichthys molitrix has a better healthcare effect.

The present invention provides a breeding feed for promoting hypophthalmichthys molitrix growth, and a production method thereof, wherein the breeding feed comprises 40-45 parts of corn protein powder, 23-26 parts of fish powder, 4-5 parts of atractylodes macrocephala, 5-6 parts of alfalfa hay, 1-2 parts of honeysuckle, 4-5 parts of polygonatum odoratum, 2-3 parts of cichorium intybus l, 4-5 parts of phaseolus calcaratus, 4-5 parts of water chestnut, 2-3 parts of jujube, and 2-4 parts of compound vitamin. The production method comprises: mixing various components according to a certain ratio, grinding into powder, carrying out low temperature drying for 1 h, completely mixing with bentonite, standing for 24 h, and granulating. According to the present invention, through the reasonable component ratio, the nutrition required by hypophthalmichthys molitrix from the fry stage to the adult fish stage can be met; and by adding the traditional Chinese medicine component, the physical quality and the immunity of the hypophthalmichthys molitrix are further improved, and the prevalence is reduced.

The invention discloses an environment-friendly, low-cost and high-yield hypophthalmichthys molitrix aquaculture method. The method includes steps: S1, aquaculture pond selection, pond clearing and disinfection and base fertilizer applying; S2, water chestnut planting, loach stocking and management; S3, hypophthalmichthys molitrix fry disinfection and pre-releasing; S4, fry stocking and feeding management; S5, water chestnut and adult fish harvesting. By interplanting of the water chestnuts, hypophthalmichthys molitrix disease damages can be prevented under the allelopathic effect of the waterchestnuts, so that agent input is reduced; by applying of a base fertilizer rich in various organics, soil and water eutrophication level is raised, growth of plankton and algae in water is benefited, and natural food sources are increased for hypophthalmichthys molitrix; by spraying of fry physique improving liquid in the stage of hypophthalmichthys molitrix pre-releasing, the fry survival rateis guaranteed, fry strengthening is realized, and a foundation is laid for high yield and yield increasing of hypophthalmichthys molitrix; by matching of feeds suitable for different growth stages ofhypophthalmichthys molitrix, giving full play to functions of active substances in the feeds is realized, hypophthalmichthys molitrix growth and maturity can be accelerated, and hypophthalmichthys molitrix yield increasing and quality improvement are realized.

The invention relates to a method for improving an urban landscape water body. The method comprises: (1) arranging aeration equipment in a target water body, and keeping the dissolved oxygen concentration of the water body at more than 3-4 mg / L; (2) determining the total water amount of the target water body and the contents of nitrogen, phosphorus and chlorophyll a in the target water body; (3) releasing hypophthalmichthys molitrix and crucian into the target water body according to the total water amount and the content of chlorophyll a; (4) after 8-10 months, fishing; and (5) releasing a certain amount of the similar fishes within one month to two months after fishing, and observing the change condition of the water body. According to the invention, the landscape water quality is improved by combining artificial aeration and increase of water body aquatic animal population quantity fishes, and the algae in the water body is reduced by increasing aquatic animal fishes and edible algae, so that the contents of nitrogen and phosphorus in the water body are indirectly reduced, the food chain of the water area ecological system is balanced, and the water quality is improved.

The invention relates to the technical field of aquaculture, in particular to a novel mode of polyculture of shrimps, crabs and fish. From June 20th to July 10th, young macrobrachium nipponense is put, the putting density is 80000-100000 ind / mu, and hypophthalmichthysmolitrix of 15-25 ind / mu and hypophthalmichthys nobilis of 25-35 ind / mu are put; from August 10th to August 20th, juvenile crabs areput, and the putting density is 1200-1500 ind / mu. The novel mode of polyculture of the shrimps, crabs and fish has the advantages that the occurrence of diseases is prevented and controlled, the manpower and bait cost is saved, the market risk is reduced, the stable production and stable harvest of the shrimps and crabs are promoted, and the comprehensive benefits are improved.

The present invention provides a Chinese medicine feed additive for improving meat quality of hypophthalmichthys molitrix, and relates to the field of Chinese medicine feed. The feed additive includes the following raw materials, in parts by weight: 4-10 parts of herba abri, 5-12 parts of herba lophatheri, 8-12 parts of pericarpium citri reticulatae, 3-9 parts of cortex phellodendri, 10-18 parts of lasiosphaera seu calvatia, 10-20 parts of herba taraxaci, 3-10 parts of leaves of Chinese holly or leaves of broadleaf holly, 3-10 parts of young plant of pakchoi, 4-12 parts of herba centellae, 7-18 parts of rhizoma phragmitis, 3-9 parts of cortex moutan, 15-19 parts of climbing groundsel herb, 12-18 parts of radix glycyrrhizae, 12-19 parts of notoginseng radix et rhizoma, 2-5 parts of cortex lycii, 3-12 parts of semen persicae, 10-20 parts of dried ginger and 2-4 parts of lignum dalbergiae odoriferae. After the feed additive provided by the invention is used to feed the hypophthalmichthys molitrix, the meat quality of the hypophthalmichthys molitrix is fresh and tender, and the meat is tender, smooth, tasty and refreshing.

The present application discloses a silver carp bait, which comprises 10-80 parts of peanut dregs, 15-85 parts of eggs, 25-70 parts of arginine, 15-50 parts of shrimp powder, 15-65 parts of cinnamon, and sulfuric acid in parts by weight. Sodium 17‑75 parts, fish bone meal 25‑50 parts, wheat bran 35‑70 parts, soybean meal 15‑60 parts, cornmeal 15‑80 parts, methionine 10‑45 parts, fish meal 15‑50 parts. Therefore, the effect is stable, the fish can be easily hooked, the fishing efficiency is improved, and it can adapt to different water areas.

The present invention relates to a fresh and sweet red date fish bone collagen homogenate and a preparation method thereof. The fresh and sweet red date fish bone collagen homogenate is characterized in being prepared from the following raw materials in parts by weight: fresh hypophthalmichthys molitrix fish bones 150-160 parts, fresh grass carp fish bones 150-160 parts, fresh shark fish bones 100-110 parts, fresh ginger 5-7 parts, mashed potatoes 30-35 parts, Chinese wolfberry fruits 10-12 parts, red dates 15-17 parts, black beans 20-25 parts, crystal sugar 10-12 parts and an appropriate amount of water. The fresh and sweet red date fish bone collagen homogenate and active ingredients thereof have health-care functions of nourishing and supplementing liver and kidney, improving eyesight, regulating immune system, nourishing skin, preventing cancer, etc. The red date fish bone collagen homogenate is fresh, sweet and delicious, has rich nutrition and delicate taste, etc.

The invention relates to the technical field of aquaculture, in particular to a novel mode of polyculture of shrimps, crabs and fish. From June 20th to July 10th, young macrobrachium nipponense is put, the putting density is 80000-100000 ind / mu, and hypophthalmichthysmolitrix of 15-25 ind / mu and hypophthalmichthys nobilis of 25-35 ind / mu are put; from August 10th to August 20th, juvenile crabs areput, and the putting density is 1200-1500 ind / mu. The novel mode of polyculture of the shrimps, crabs and fish has the advantages that the occurrence of diseases is prevented and controlled, the manpower and bait cost is saved, the market risk is reduced, the stable production and stable harvest of the shrimps and crabs are promoted, and the comprehensive benefits are improved.

The present invention discloses a feed for hypophthalmichthys molitrix. The feed comprises the following raw materials in parts by weight: 10-15 parts of soybean powder, 20-30 parts of potato powder,20-30 parts of enzymatically hydrolysed krill powder, 20-40 parts of bean dregs, 2-4 parts of olive oil, 1-3 parts of palm oil, 1-2 parts of fish oil, 4-6 parts of a squid paste, 1-2 parts of probiotics, 1-2 parts of glucoronic acid, 5-7 parts of sucrose, 4-6 parts of xylose, 4-6 parts of sodium alginate, 0.5-1 part of vitamin premix powder, 0.1-0.3 part of mineral premix powder, 0.1-0.3 part of cystine, 0.2-0.4 part of lysine, 0.3-0.5 part of methionine and 12-16 parts of additives. The additives comprise the following raw materials: Chinese pulsatilla roots, folium isatidis, fructus gardeniae, herba portulacae, fructus forsythiae, haws, lycopene, radix acanthopanacis semticosi and rhizoma curcumae longae. The feed can increase resistance of fish, inhibits growth of harmful bacteria and pests in water, has good drug resistance and is free of toxic and side effects.

The invention discloses a method for developing a hypophthalmichthys nobilis sex determination molecular marker by taking Gapdh gene as reference, and belongs to the field of fish genetics. Accordingto the method, a specific sequence (SEQ ID NO.2) only existing in a male hypophthalmichthys nobilis genome sequence is found, and primers designed based on the specific sequence can be used for identifying the gender of hypophthalmichthys nobilis. The Gapdh gene is called from a hypophthalmichthys nobilis genome to serve as a reference design primer, the Gapdh gene and the primer for identifying the gender of the hypophthalmichthys nobilis are subjected to double PCR amplification, and the genetic gender of the hypophthalmichthys nobilis can be rapidly and accurately identified through agaroseelectrophoresis. The molecular marker developed by the invention has strong specificity and can be used for accurately identifying the gender of hypophthalmichthys nobilis. The Gapdh gene is used asa reference gene for identification through double PCR, and gender judgment errors caused by DNA degradation, sample adding errors or PCR amplification failures and the like are avoided. The method has the advantages of quickness, simplicity, convenience, high accuracy and the like, and can be used for accurately identifying the genetic sex of hypophthalmichthys nobilis on a large scale.

The invention relates to the technical field of freshwater fish farming, in particular to a fishy smell removing and cultivating method of hypophthalmichthys molitrix. The fishy smell removing and cultivating method comprises the following steps of firstly cleaning a pond; stocking fry of hypophthalmichthys molitrix after cleaning the pond, wherein the stocking density of the fry is 2 million to 2.2 million per hectare; uniformly applying theobromine into the pond after stocking for 6 months, wherein the applying amount of the theobromine per hectare is 3 to 5 kg, and the theobromine is applied to the pond for once every 21 days; feeding bait for twice every day in a period of stocking the fry of the hypophthalmichthys molitrix for 0 to 6 months, wherein the feeding amount every day is 2 to 8 percent of the total weight of the fry; completely changing the water for once every month in a period of stocking the fry of the hypophthalmichthys molitrix for 2 to 6 months; feeding the bait for once between 10 p.m. and 12 p.m. every night after stocking the fry of the hypophthalmichthys molitrix for 6 months, wherein the feeding amount of the bait is 6 to 8 percent of the total weight of the fry; changing the water for once every seven days after stocking for 6 months, wherein the water changing amount every time is one third of the total water amount in the pond; fishing after stocking the fry of the hypophthalmichthys molitrix for 9 months.