58results about How to "Promote gonad development" patented technology

The invention discloses a wild rhinogobio ventralis continental rise pond net cage domestication method. The method includes four key technical links of the link 1, domestication pond water quality cultivation and regulation and control, specifically, applying liquid state organic fertilizer, composite probiotics and bottom material improvers at regular intervals to carry out water quality cultivation and the regulation and control, the link 2, net case establishment, and specifically a net case is mainly composed of knotless netting and a stainless steel framework and meanwhile is provided with an aeration flow generating device, the link 3, polyculture of wild rhinogobio ventralis and megalobrama pellegrini, specifically, adopting the method that artificial culture breeds are cultured in a matched mode outside the net cage to carry out domestication of wild fishes, and the link 4, ingestion domestication, specifically, adopting the method of food calling first and domestication feeding second, namely, feeding biological baits first then gradually feeding artificial mixed feed. According to the method, domestication of the wild fishes is carried out in a manner that the flow generating type net case is erected in a continental rise pond, meanwhile, the technologies of the water quality regulation and control, polyculture and live bait food calling are utilized comprehensively, and therefore the adaptability of the wild fishes to the culture environment can be promoted, the survival rate of domestication can be improved, and the method has wide application prospect.

The invention relates to an optimum selection method of a wild parent of an autumn shrimp of Marsupenaeus japonicus and a fundamental group morphological model obtaining method. Marsupenaeus japonicus summer wild individual shrimps having the body types meeting a morphological model equation of a Marsupenaeus japonicus autumn shrimp high-quality wild parent selection fundamental group are selected into an autumn shrimp high-quality wild parent fundamental group; after artificial ripening promotion and culture, female shrimps that have characteristics of bright and clean body surfaces, bright and transparent shells, bright body colors, complete appendages, healthy states with no disease and no damage, quick reaction, good gonad development, and long body lengths larger than or equal to 16cm are selected as Marsupenaeus japonicus autumn shrimp breeding parents. Therefore, the overwintering breeding survival rate of the Marsupenaeus japonicus autumn shrimps is effectively improved.

The invention discloses a method for temporary culture, egg laying and egg protecting of octopus variabilis sasaki and a device for the method, wherein the method comprises steps of 1 selection of parents, 2 temporary culture and accelerated ripening of parents and 3 egg protecting of the parents, and an octopus nest which is specifically designed is used. The method for temporary culture, egg laying and egg protecting of the octopus variabilis sasaki is simple in operation, the device for the method is low in cost and high in use rate, can effectively increase survival rate and egg laying amount of the parents of the octopus variabilis sasaki, hatching rate of fertilized eggs and healthy degree of young seedling. The octopus nest simulates a natural nest structure of the octopus variabilis sasaki, is more suitable for actions of patient octopus variabilis sasaki such as hiding, defensing and laying eggs and protecting eggs and the like, and is simple in making, convenient to use, less in investment and excellent in effects.

The invention relates to an artificial maturing method for exopalaemon carinicauda in anestrous seasons, in particular to an artificial reproduction method for exopalaemon carinicauda in autumns and winters by means of regulating and controlling the temperature and the illumination cycle and enriching nutrients for the exopalaemon carinicauda. The artificial maturing method mainly includes controlling the temperature of water; regulating and controlling the illumination cycle; and enriching nutrients for the exopalaemon carinicauda. Temperature control equipment simulates a procedure that the temperature of water in springs rises gradually so as to control the temperature of the water; fluorescent lamps and a timer simulate a procedure that the illumination cycle is gradually prolonged in the springs so as to regulate and control the illumination cycle; and fresh baits such as nereid are fed to the exopalaemon carinicauda to enrich nutrient supplied for the exopalaemon carinicauda in a gonad development procedure. The exopalaemon carinicauda can smoothly reproduce by laying eggs after being bred for 2-3 weeks under the condition. The artificial maturing method has the advantages that characteristics that the temperature of the water gradually rises in the springs and the illumination cycle is gradually prolonged under natural conditions are simulated, so that gonads of the exopalaemon carinicauda are developed in the anestrous seasons, the exopalaemon carinicauda reproduces by laying the eggs in the anestrous seasons, and the purpose of controlling reproduction of the exopalaemon carinicauda throughout the year is achieved.

The invention discloses a seed culture method for cherax quadricarinatus. The method comprises the following steps of 1 culture pond preparation, 2 seed shrimp selection, 3 seed shrimp pond entry, 4 parent shrimp culture, 5 seed shrimp copulation, 6 incubation management and 7 shrimp seed marking. According to the seed culture method, in the cultivation process, seed shrimp gonad development, illumination period stimulation, hormone stimulation and effective temperature accumulation in the shrimp seed growth process are improved, within a complete seed culture period, the shrimp seed yield is300% of the yield in the prior art for the same amount of parent shrimp, the cherax quadricarinatus egg mass rate and the shrimp seed survival rate are effectively increased, the yield of cherax quadricarinatus is greatly increased, and therefore the cherax quadricarinatus seed culture cost is lowered.

The invention discloses a feed additive for promoting ripening of sea cucumber seeds. The additive consists of the following components in percentage by mass: 5 to 10 percent of docosahexaenoic acid (DHA), 20 to 35 percent of eicosapentaenoic acid (EPA), 0.5 to 2 percent of astaxanthin, 2 to 4 percent of cholesterol, 0 to 10 percent of phospholipid, 5 to 15 percent of sand hopper powder, 0.5 to 1percent of vitamin A, 0.5 to 1 percent of vitamin C, 0.5 to 1 percent of vitamin E, 10 to 30 percent of pine needle powder, 5 to 15 percent of malt, 10 to 20 percent of egg yolk powder, 0.5 to 2 percent of globulin, 0.5 to 1 percent of erythrogenin and 0.5 to 1 percent of saccharicterpenin. The additive is suitable for promoting ripening of the sea cucumber seeds, and can obviously promote the gonad development of the sea cucumber seeds, quicken sexual maturity and improve the egg laying amount and the ripening ratio, fertility rate, hatching rate and sea cucumber seedling survival rate of the colony; and the additive does not contain hormone or antibiotics, has no pollution or no toxic or side effect, has low consumption, and is stable in raw material source, low in price and simple in production process.

The invention provides a special compound feed for breeding parent prawns of penaeus monodon. The feed comprises the following components in percentage by weight: 25%-40% of fish meal, 5%-9.5% of artemia powder, 3%-6% of enzymolysis fish soluble pulp powder, 3%-9% of schizochytrium limacinum powder, 1%-3% of kelp powder, 2%-8% of hermetia illucens powder, 2%-5% of shrimp shell powder, 6%-12% of mussel powder, 2%-5% of marine red yeast dry powder, 10%-15% of flour, 1.5%-3% of lysolecithin, 0.8%-1.4% of ARA purified oil, 1.5% of DHA purified oil, 1.5% of EPA purified oil, 3.1%-3.7% of stearic acid triglyceride, 1%-2% of fish oil, 1%-5% of monocalcium phosphate, 0.9%-1.22% of vitamin premix and 1.08%-1.4% of mineral premix. According to the special compound feed, the growth performance of the parent prawns of penaeus monodon in the breeding period is remarkably improved, gonad development of the penaeus monodon is promoted, and the egg laying amount, the egg laying rate, the continuous egg laying rate, the fertilized egg hatching rate, the metamorphosis rate and the egg diameter of the parent prawns are increased.

The invention discloses a method for prompting ricefield eels to spawn in advance. The method comprises keeping the aquaculture water temperature between 15 to 35 DEG C and or throwing marsh pennywort into aquaculture water. According to the method for prompting the ricefield eels to spawn in advance, 2 to 4 months of the spawning time of the ricefield eels can be advanced than that under the natural conditions, so that seedling breeding in the current year can be achieved, seedlings can be provided in the current year, and the breeding cycle of the seedlings of the ricefield eels is reduced.

The invention relates to a pan-type fry culturing method for Procambrus clarkii, in particular to completing the process of breeding Procambrus clarkii fries in a pan-type container, belonging to the technical field of aquiculture. The method is characterized by comprising the following four steps of fry breeding pan selection, fry breeding preparation, parent shrimp stocking and management and shrimp fry breeding. Only one female shrimp or ovigerous shrimp is put in a fry breeding pan, and therefore, the specification of bred shrimp fries is regular, the cannibalism rate is reduced, and the shrimp fry survival rate is improved. The fry breeding pan is put in a dark fry breeding room, and therefore, the development rate of the sex gland of the female shrimp is high; the fry breeding operation is convenient, and the fry breeding efficiency is higher than that of the traditional fry breeding mode. The pan-type bred fries are not influenced by the change of the external climate; the shrimp fries hatched out on the same day are raised under the same ecological condition, being beneficial to developing mass selection. The invention is suitable for being popularized and applied in domestic Procambrus clarkii breeding farms and scientific research departments.

The invention discloses a feed promoting silver salmon gonad development. The feed is composed of the following components by weight: 38 parts of fish meal, 3 parts of shrimp shell powder, 4 parts of Euphausia superb powder, 9 parts of beer yeast, 4 parts of phospholipid powder, 5 parts of skim milk powder, 6 parts of flour, 6 parts of alpha-starch, 20 parts of fish oil, 5 parts of soybean oil, 4 parts of olive oil, 0.7 part of vitamin C, 0.4 part of vitamin E, 0.15 part of dunaliella salina powder, 0.15 part of Haematococcus pluvialis powder, 2.5 parts of n-3HUFA, 0.15 part of taurine, 1.5 parts of choline chloride, 0.02 part of D-calcium pantothenate, and 1 part of calcium dihydrogen phosphate. The feed provided by the invention meets the requirement of silver salmon parent fish for nutrition, can induce silver salmon to eat, improves the immunity of parent fish, promotes silver salmon gonad development, and increases the energy needed by parent fish growth and development.

The invention relates to a special feed for parent fishes of onychostoma macrolepis and a preparation method thereof. The feed is characterized by comprising, by weight, 28.5% of fish meal, 14% of soybean meal, 1.4% of rapeseed meal, 23%-24.7% of cottonseed meal, 11.7%-14.9% of flour, 7.8%-8.5% of rice bran, 1%-8.5% of cellulose, 4.7%-6.9% of soybean oil, 1% of bentonite, 2% of calcium dihydrogenphosphate and 1% of a fish premix, wherein 1 kg of the feed comprises 90-110 g of lipid. By adopting the feed, the problem is solved that there has been no special feed for the parent fishes of onychostoma macrolepis for a long time. Meanwhile, the feed has important significance in promoting the reproduction efficiency and scale of the parent fishes of onychostoma macrolepis and large-scale breeding of onychostoma macrolepis, boosting the development of the industry, increasing the economic income of fishermen to make the fishermen get rid of poverty and become rich, and facilitating the conservation of fishery germplasm resources and the recovery of species diversity in Qinba mountain areas.

The invention provides a factory-like full-artificial propagation method of sebastes schlegeli. The method comprises the following steps of 1) factory parent fish optimization and cultivation; 2) artificial insemination; 3) parent fish breeding after insemination; 4) parent fish pond arrangement and farrowing; and 5), fry rearing. According to the factory-like full-artificial propagation method ofthe sebastes schlegeli, the insemination success rate of parent fishes reaches 88.5% or above, the farrowing survival rate reaches 78.6% or above, the fry survival rate reaches 48.0% or above, high-quality fries with the average full length of 5.2 cm can be obtained after 2.5 months of cultivation, and the propagation efficiency of female parent fishes of the sebastes schlegeli is effectively improved; and the large-scale mass production of high-quality offspring seeds is broken through, the dependence of directly fishing parent fishes with offspring on wild resources and cage culture parentfish groups is solved, the problems of low factory mating rate, low offspring survival rate and the like are solved, and the method has higher popularization value.

The invention discloses an overwintering farming method of spotted maigre, which utilizes the idle phase of a shed after farming prawns and original facilitates and belongs to the field of agricultural seawater farming. An original cement pit, the shed and an oxygenation device of the farming shed are utilized; and the specific method comprises the following steps of: clearing pollutants after the end of farming, containing 60cm of water, disinfecting with 100ppm of bleaching powder, draining after 3 days, and air-drying for 3 days; enabling farming water to precipitate in a storage lagoon for 48 hours, disinfecting with the 100ppm of the bleaching powder, filtering by an 80-mesh silk cover after 3 days, pumping into the cement pit of the shed, and adding the water till the water level is 2.0m; when the temperature of the farming water of the spotted maigre is lower than 12 DEG C, transporting the spotted maigre into the shed for stocking, wherein the stocking density is 500kg / mu; and taking iced squid as baits, and feeding in fixed points in a timing and quantitative manner, wherein the feeding quantity is 1% of the total body weight of the farmed spotted maigre. Simultaneously, bay scallops are stocked in the pit according to the density of 100kg / mu, pollution discharge is performed once every 5 days, and 20cm of the water is replaced; and by adopting the method, the survival rate is above 98%, and the using method is simple, convenient, low in cost and easy to popularize.

The invention discloses a preparation method of fortifying feed for a prawn breeding season. The preparation method comprises the following steps: preparing fermented soybean meal and tea polyphenol liposome, and compounding. The preparation method has the beneficial effects that anti-nutritional factors in the fermented soybean meal are decomposed and removed; the fermented soybean meal is rich in protein, organic substances and medium trace elements, and is suitable to serve as a base material of prawn feed; microbial community composition of intestinal tracts of prawns can be changed aftermicrobes enter into the bodies of the prawns, so that the prawn growth speed is improved, the anti-disease capacity is enhanced and the immunity is improved; the feed is rich in nutrients, such as protein, amino acid, fat, vitamins and mineral element, is assisted by a phagostimulant, can meet the nutritional requirements of the growth and the development of parent prawns, promote the growth and the gonadal development of the prawns and prepare for the reproduction of the prawns, and is nutrition fortifying feed for the prawn breeding season, which is highly targeted and safe and does not havetoxic or side residues.

The invention discloses an artificial breeding method of southward stichopus japonicus, and belongs to the technical field of cultivation of the stichopus japonicus. In autumn in the north, when the water temperature of seawater of a natural sea area reaches 10-15 DEG C, cultivated stichopus japonicus is collected to be stored at a low temperature, and the storage water temperature is the natural water temperature; when the natural water temperature drops to 4-6 DEG C, the water temperature is kept for 10-20 days, and then the cultivated stichopus japonicus is transported to the south by adopting a water transportation method to be cultivated in cages on the sea; when the natural water temperature rises to 17 DEG C, the cultivated stichopus japonicus is moved from the sea to a workshop for spawning, fertilization, incubation and cultivation of floating hatch larva, throwing of substratums and cultivation of young stichopus japonicus; when the natural water temperature in the south gradually exceeds 28 DEG C, kelp seedling cooling water is utilized to cool the water used for cultivation of the young stichopus japonicus through plate heat exchangers, and the water temperature is kept within the range suitable for growth of the young stichopus japonicus. By means of the artificial breeding method of the southward stichopus japonicus, gonad development of the southward stichopus japonicus is promoted, the sperm quality and the ovum quality are improved, and the higher hatching rate and emergence rate are obtained.

A double bottom cultivation pond for crabs of a green crab variety relates to a cultivation pond for seawater crabs, the technical problem to be solved is to keep the freshness of the cultivation environment in the stage of nutrition enrichment of various crabs. The technical scheme of the invention includes providing the cultivation pond and sea sand, the water level of the cultivation pond is 50 to 80cm and the water temperature thereof is 27 to 28 DEG C. The cultivation pond is characterized in that a layer of baffles is arranged at the height of 10cm above the bottom of the pond, through holes with the aperture of 3 to 5cm are distributed on the surface of the baffle, two layers of net are laid above the baffles, the lower layer of net is a rigid PVC net with the mesh of 20mm, the upper layer of net is a nylon sieve of 60 meshes / square inch, the sea sand with the grain diameter of 0.074 to 0.106mm and the layer thickness of 10 to 15cm is laid above the nylon sieve netting, the sea sand layer is flushed by sea water regularly, an inflation stone for inflation is arranged under the baffles at intervals of 2m<2>. The cultivation pond of the invention is applicable to the cultivation of the crabs of a green crab variety.

The invention relates to an aeration flow-producing device applied in the cultivation of fish with rheotaxis. The device is composed of a blower, PVC flow-producing pipes, air pipes, an equal tee, reducer tees, bent pipes, and the like. The blower is directly connected with a main air pipe. The main air pipe is connected with branch air pipes through the equal tee; the branch air pipes are connected with the PVC flow-producing pipes through the reducer tees provided with valves. The aeration volume can be adjusted through the valves. The PVC flow-producing pipes mainly include PVC aeration pipes perforated on single sides and a PVC aeration pipe perforated on different directions on two ends. The flow-producing pipes are connected through elbows. The device provided by the invention has the characteristics of low construction cost, low operation energy consumption, low operation cost, convenient operation, low failure rate, and the like. Airflow is produced by the blower, and enters cultivation pond water through the air pipes and the PVC flow-producing devices. The airflow pushes water, and artificial water flow with controllable flow velocity and flow pattern is formed in the cultivation pond. Also, dissolved oxygen in water can be effectively increased. Therefore, the growth requirements of fish with rheotaxis can be satisfied.

The invention belongs to the technical field of crayfish breeding, and discloses a method and a device for large-scale breeding of crayfish in a net cage of a greenhouse. The method comprises the steps of building the greenhouse on a cement pool; building the net cage in the cement pool, and planting water hyacinth around the net cage; selecting parent crayfish in August and September, wherein theweighs of the parent crayfish are 40-50g, feeding mainly with animal feed, supplementing with pellet feed, and controlling the feeding amount to be 3-6% of the total weight of the bred crayfish; after the incubation of the parent crayfish is completed, removing the net cage and the parent crayfish in the net cage; continuing to breed the floating plants and animals through the fertilizer water inthe pool so as to provide astaxanthin for ingestion of the crayfish; after crayfish larvae are incubated in the cement pool for two weeks, collecting by using a small-mesh ground cage and then transferring into a big pond for further breeding. The method increases the water temperature during breeding, thus promoting the gonad development of the parent crayfish, shortens the embryo hatching time,and enabling the emergence of the seedlings to be synchronous as much as possible; furthermore, the net cage is used for isolating the parent crayfish and the crayfish larvae after incubation, so that the cruel killing of the crayfish larvae by the parent crayfish is reduced, the survival rate of the crayfish larvae is 90% or above, and the large-scale breeding is realized.

The invention discloses a pelteobagrus fulvidraco fry breeding method, which comprises the steps of selecting parent fish, strengthening the nutrition of the parent fish, conducting spawning inductionon the parent fish, spawning, hatching and conducting fry breeding. The feed for strengthening the nutrition of the parent fish contains a marine red yeast extract, fermented aloe and the like. The marine red yeast extract is rich in unsaturated fatty acid, small molecular protein, amino acid, astaxanthin and other nutrients, so that the nutrition requirements of the growth and development of theparent fish can me bet, and the growth and gonad development of the parent fish of pelteobagrus fulvidraco are promoted; and the fermented aloe is rich in aloe polysaccharide, vitamin and aloin, hasan antibiotic effect and does not product drug resistance, and the fermented aloe has no toxic side effects and can improve the immunity and enhance the resistance of the parent fish of pelteobagrus fulvidraco. The pelteobagrus fulvidraco fry breeding method has the beneficial effects that the growth and gonad development of the parent fish are promoted through conducing nutrient enhancement on the parent fish, the immunity of the parent fish is improved, and measures are taken in a spawning stage so as to improve the spawning quantity and the spawning quality of pelteobagrus fulvidraco.

The invention discloses an intensified cultivation method of parent koi fishes. The intensified cultivation method comprises the steps of 1, selection of a parent fish pool; 2, cleaning and water fertilizing for the pool; 3, selection of the parent fishes; 4, preparation before putting of the parent fishes into the pool; 5, intensified cultivation; 6, daily management; 7, gonad development and regulation. According to the intensified cultivation method, adopted pool cleaning chemicals contain natural ingredients, and the killing effect is significant; utilized organic fertilizer is simple in formula and easy to obtain, and rich plankton can be generated in the fish pool within a short term, and can serve as food for the parent koi fishes in the early stage and inhibit the reproduction and growth of harmful organisms. According to the method, by controlling the feed putting amount according to seasons, the types of the put feed and the content of nutritional ingredients of the put feed are adjusted at the same time, length and weight increase of the parent koi fishes can be sufficiently facilitated, and the stress resistance of the koi fishes is improved; by adjusting the water temperature and illumination intensity acceptable to fish bodies, the gonad development of the parent koi fishes and the stability of the water environment are promoted.

The invention belongs to the technical field of aquatic animal culture, breeding physiological regulation and control and disease prevention and control, and discloses a gonad development promoting additive for fishing. The gonad development promoting additive for fishing is prepared from the following raw materials in parts by weights: 10 to 20 parts of motherwort herb, 8 to 15 parts of herba epimedii, 5 to 10 parts of radix astragali, 3 to 6 parts of Chinese wolfberry fruits, 8 to 15 parts of radix angelicae sinensis, 8 to 15 parts of safflowers and 20 to 30 parts of carriers. The inventionalso discloses a preparation method of the gonad development promoting additive for fishing. The preparation method comprises the following steps of weighing the motherwort herb, the herba epimedii, the radix astragali, the Chinese wolfberry fruits, the radix angelicae sinensis, the safflowers and the carriers; respectively drying and cutting up each raw material; after micro-pulverization, performing full and uniform mixing; and sieving the raw materials through a 300-mesh screen, so as to obtain the gonad development promoting additive for fishing. When the gonad development promoting additive for fishing is added into aquatic animal feed, the related hormone level of the gonad development in serum (lymph) can be effectively improved; the gonad development is promoted; the non-specificity immune function of animals can also be improved; and the animal growth is promoted.

The invention relates to the technical field of nereis cultivation culture tanks, in particular to a nereis biological feed culture tank. The nereis biological feed culture tank comprises a drainage plate, a screen laid on the drainage plate, used for placing culture medium and preventing the culture medium from running away, as well as a culture medium layer laid on the screen, the drainage plate, the screen and the culture medium layer are sequentially arranged above the bottom of the culture tank, the culture tank is provided with a water outlet, and the water outlet is arranged below the drainage plate. Compared with the prior art, the culture tank provided by the invention utilizes mobilization force of discharging water at the bottom of the culture tank, so that feed fed into the culture tank can better go deep into the culture medium, utilization rate of feed solute is improved, and efficient nereis cultivation is realized; besides, the culture medium layer can effectively avoid external germs from invading a nereis system, and when water is changed and residual feeds and juice in the culture tank are washed, the culture medium layer stays on the screen and is difficult to run away while the residual feeds and juice on the culture medium layer can be rapidly and efficiently washed away by running water, so that a clean and sanitary growth environment is provided for nereis.

The invention discloses a traditional Chinese medicine preparation for treating microtestis. The traditional Chinese preparation comprises the following main components in part by weight: 25-35 parts of prepared rhizome of rehmannia, 25-35 parts of curculigo orchioides, 15-25 parts of white ginseng, 10-20 parts of dendrobe, 10-20 parts of grassleaf sweelflag rhizome, 20-30 parts of marine algae, 25-35 parts of radix morindae, 10-20 parts of radix aconite lateralis preparata, 10-20 parts of angelica, 15-25 parts of tuckahoe, 10-20 parts of milkwort, 20-30 parts of teasel root, 25-35 parts of dogwood,25-35 parts of desertliving cistanche, 10-20 parts of achyranthis root, 10-20 parts of shizandra berry, 10-20 parts of dwarf lilyturf turber, 3 chilopods, 25-35 parts of boxthorn fruit, 10-20 parts of malaytea scurfpea fruit, 5-15 parts of Chinese thorowax, 10-20 parts of Chinese cinnamon, and 15-25 parts of human placenta. The traditional Chinese medicine preparation has good curative effect and has no toxic or side effects with the effective rate reaching more than 75%.

The invention discloses a paramisgurnus dabryanus parent cultivation method. The paramisgurnus dabryanus parent cultivation method comprises the following steps of selecting 2-year or more loaches which are strong in physique, normal in body color, healthy, lively and free of injuries and diseases as parents, wherein the body length of the male loaches is more than 15 cm, the body length of the female loaches is more than 12 cm, and the male-female ratio is 3: 1; and respectively carrying out prenatal intensified cultivation in two months before delivery in spring and autumn, carrying out postnatal repair cultivation in one month after delivery, and carrying out overwintering cultivation before winter. The paramisgurnus dabryanus parent cultivation method has the advantages that the deathrate of the parent loaches after artificial insemination can be reduced, and spring and autumn breeding of the parent loaches is achieved.

The invention provides a method of artificial breeding of a giant salamander, which belongs to the field of aquaculture. The method comprises steps of parent fish culture, artificial induced spawning,artificial insemination, artificial hatching and juvenile fish rearing. In the artificial insemination process, a fertilized egg is subjected to debonding, and the method comprises steps: yellow soilis used and stirred into slurry water, a saline solution containing 5-7% tert-butyl-2-(alkylamine formyl) furan 1 or 2 times the volume of the fertilized egg is added to the slurry water, the fertilized eggs are slowly poured into the slurry water and stirred for 5 to 10 minutes to remove the bonding. Through carrying out nutrient strengthening on the parent fish, parent fish growth and gonad development are promoted, the immunity of the parent fish is improved, the fertilization rate and the survival rates of the fertilized egg and the juvenile fish are improved by adopting artificial intervention measures, and the breeding number of the giant salamanders is improved.

The invention provides a feed capable of improving the propagation capacity of parent daces and a production method of the feed. The feed consists of 8%-12% of second-class flour, 15%-25% of rice branmeal, 20%-30% of 200 type rapeseed meal, 20%-28% of 46 soybean meal, 3%-5% of imported DDGS, 1%-3% of first-class soybean oil, 0.5%-2% of palm oil, 4%-10% of a mixture of rice chaff and husk, 1-2% ofcalcium dihydrogen phosphate, 0.8%-1.5% of bran, 0.3% of composite vitamins, 1.5% of composite minerals, 0.04%-0.08% of vitamin A acetate, 0.1%-0.2% of vitamin C phosphate ester, 0.07%-0.12% of vitamin E and 0.1%-0.3% of selenium yeast, and a traditional Chinese medicine component of 3-5% of 46 soybean meal is also added. The nutritional requirements of the parent daces during a breeding period are met, the stress of artificial delivery expediting on the parent daces is reduced to the largest extent, the sexual gland index, the egg diameter and the egg laying quantity of the daces are effectively increased, and the fertilization rate and the emergence rate of the parent daces are increased.

The invention discloses a high-efficiency factory propagation method of Taiwan misgurnus anguillicaudatus, and belongs to the technical field of misgurnus anguillicaudatus propagation. The high-efficiency factory propagation method of the Taiwan misgurnus anguillicaudatus comprises the following steps: 1) selecting parent misgurnus anguillicaudatus; 2) cultivating the parent misgurnus anguillicaudatus; 3) carrying out injection for spawning induction; 4) carrying out artificial insemination; 5) carrying out hatching; and 6) breeding fry. According to the high-efficiency factory propagation method provided by the invention, through the throwing of male and female parent misgurnus anguillicaudatus with a proper proportion, proper breeding density, adoption of self-made breeding feed, and control of the water flow rate and oxygen flow rate in a hatching tank, and the like, the propagation speed and the hatching survival rate of the Taiwan misgurnus anguillicaudatus are greatly improved, and high-efficiency large-scale propagation of the Taiwan misgurnus anguillicaudatus is facilitated.

The invention discloses a hatching method of Taiwan misgurnus anguillicaudatus, and belongs to the technical field of misgurnus anguillicaudatus hatching. The hatching method of the Taiwan misgurnus anguillicaudatus comprises the following steps: 1) selecting parent misgurnus anguillicaudatus; 2) cultivating the parent misgurnus anguillicaudatus; 3) carrying out injection for spawning induction; 4) carrying out artificial insemination; and 5) carrying out hatching. According to the hatching method provided by the invention, through the throwing of male and female parent misgurnus anguillicaudatus with a proper proportion, proper breeding density, adoption of self-made breeding feed, and control of the water flow rate and oxygen flow rate in a hatching tank, and the like, the hatching rateof the Taiwan misgurnus anguillicaudatus is greatly improved, and fry with robust body type are obtained.

The invention discloses a method for breeding parental coreius guichenoti by hull in-situ flowing water. The method includes steps: (1) hull transformation, to be more specific, transforming a fishingor transporting ship with tonnage and cabin area into a tank for parental fish domestication; (2) hull placement, to be more specific, placing a transformed hull offshore, and keeping the hull stableand keeping smoothness in water exchange of the tank; (3) parental fish collection and breeding, to be more specific, selecting injury-free robust individuals from coreius guichenoti captured by fishermen, subjecting to disinfection treatment with strong chlorine, and releasing into the tank; (4) feeding with feed, to be more specific, feeding with feed in morning and evening; (5) fish disease prevention, to be more specific, in flood seasons, feeding with medicinal bait, and adding vitamins on the basis of the feed; pouring strong chlorine which is a sterilization and disinfection medicine to the tank to prevent diseases. The method is feasible, convenient and simple in operation, defects of proneness to death and poor gonad development of parental coreius guichenoti bred in ponds, net cages, indoor circulating water systems and the like are effectively overcome, and a solid foundation is laid for success of artificial propagation.

The present invention provides an artificial decapeptide for inducing the development of gonad in crustacean, a medication including the artificial decapeptide and a method of inducing the gonad development of crustacean. The method includes administrating an effective amount of an artificial decapeptide to a crustacean, thereby promoting gonad development of crustaceans, wherein the artificial decapeptide includes a sequence set forth in SEQ ID NO: 2.