135 results about "Accessory gonad" patented technology

The invention discloses a method for ecologically fattening and regulating quality of pond breeding river crabs, which comprises steps: preparation of a fattening pond, selecting and stocking of crabs, salinity regulation of fattening water, daily management and fishing and marketing. The method for ecologically fattening and regulating quality of pond breeding river crabs artificially creates suitable salinity conditions and feeds high quality baits according to the influence of water salinity to gonad development and physiological metabolism of eriocheir sinensis, and improves fattening effect and quality of merchandise crabs. The method for ecologically fattening and regulating quality of pond breeding river crabs is characterized in that male and female crabs are separately fattened, suitable water salinity (male crabs are 10-15ppt, female crabs are 5-8ppt) is selected, fine sands are paved on the bottom of the fattening pond, oxygen is charged from micropores which are arranged on the bottom portion of the fattening pond, and the male and female crabs are scientifically feed. Gonadosomatic index of female crabs is increased to about 8% from initial about 4% through scientific fattening for 30-40 days, the gonadosomatic index of male crabs is increased to about 3% from initial about 1%, and the radios of survival rate of fattening and high quality green crab respectively achieve above 80% and 70%, thereby improving taste, nutritive value and economic value of river crabs. The method for ecologically fattening and regulating quality of pond breeding river crabs is suitable for river crab breeding enterprises, breeding farmers and marketing units, and is beneficial to improve breeding efficiency and nutritional quality of river crabs.

The invention belongs to the technical field of male and female silkworm pupa identification in the silkworm breeding and mulberry growing industry and particularly relates to an intelligent silkworm pupa identification facility and method. The intelligent silkworm pupa identification facility comprises a base, an intelligent silkworm pupa conveying device, an intelligent silkworm pupa detecting device and an intelligent silkworm pupa collecting device. The intelligent silkworm pupa conveying device is arranged on the base and used for driving silkworm pupae to move forwards at a given speed, positioning and picking the silkworm pupae and adjusting the postures of the silkworm pupae. The intelligent silkworm pupa detecting device is located at the conveying tail end of the intelligent silkworm pupa conveying device and used for conducting image collection on the silkworm pupae and identifying gonad characteristics of the silkworm pupae. The intelligent silkworm pupa collecting device is located beside the intelligent silkworm pupa detecting device and used for separating and collecting the identified silkworm pupae. According to the intelligent silkworm pupa identification facility and method, the conveying device is compact in overall structure, and the machine vision technology is adopted, so that through software control, transferring and posture adjustment of the silkworm pupae can be achieved at the same time, the accuracy rate of subsequent intelligent silkworm pupa identification can be effectively increased, and accordingly the facility and method have wide application prospects in the fields such as intelligent silkworm pupa transportation.

The invention discloses an ecology-imitating cultivating breeding method for parent fishes of scaphesthes macrolepis. The method specifically comprises the steps of parent-fish ecologic strengthening cultivating, mature parent-fish selecting, artificial inseminating, germ cell incubating and the like. By means of an artificial ecologic technologic mean, specific nutrition bait material is prepared in a matched mode, ecological factor and nutrition requirements for gonad development of the scaphesthes macrolepis are met so that gonads of the parent fishes mature naturally, any synthetic auxins are not used in a whole breeding process, mature parent fishes can lay all fish eggs at a time, and therefore it is avoided that artificial oxytocic hormones have negative effects on the parent fishes, production service life of the parent fishes is prolonged, and quality of germ cells is improved. The problem that 'little amount and many times' of fish egg laying of the parent fishes occurs when the scaphesthes macrolep is bred by using a common method is solved. The parent fishes, having the naturally-maturing gonads, of the scaphesthes macrolepis can be successfully cultivated in the method, the egg laying rate of the parent fishes reaches 58.6%, and the hatching rate of the germ cells reaches 67.3%.

The invention discloses an artificial hybridization breeding method for epinephelus fuscoguttatus and epinephelus polyphekadion. The method comprises the steps of (1) choice of parents, (2) cultivation of the parents, (3) check and judgment of the gonad development degree of parent fishes, (4) artificial fertilization, (5) incubation of zygotes and (6) packing and transporting of the zygotes. Through the method, intergeneric hybridization of epinephelus fuscoguttatus and epinephelus polyphekadion is realized, first filial generation fish fry with characteristics of two parents is obtained and used for subsequent artificial breeding, and the cultivated hybrid fishes are good in breeding property, delicious in flesh and high in cost performance, and a new variety is provided for all fry varieties of fishes.

The invention provides an artificial multiplication method of epinephelus polyphekadion. The artificial multiplication method includes the steps of 1), parent selection; 2), parent cultivation; 3), inspection and judgment of gonad development degree of parent fish; 4), artificial fertilization; 5), hatching of fertilized eggs. Through optimization design of various phases of the epinephelus polyphekadion from parent cultivation to fertilization and cultivation fish fries after hatching of the fertilized eggs, fertilization rate reaches more than 99.2%, the fertilized eggs can be hatched to thefish fries in 24-26 hours, and hatching rate can reach more than 99.5%.

The invention discloses a hippocampus erectus parent fish pairing method. The technical scheme of the invention is carried out under the condition of providing an aquaculture system and an aquaculture environment. The hippocampus erectus parent fish pairing method is characterized in that female sea horses and male sea horses are separately cultured for a period of time and then paired to ensure that the synchronization of incubation, the pairing rate of the sea horses is increased by mixing parent sea horses with different lengths under the condition of low density; before the parent sea horses are paired, the female sea horses and the male sea horses are separately cultured for at least 15 days until the gonads of the female sea horses are matured, and the density is 0.3-0.4 / L; and after the gonads of the female sea horses are matured, and the matured female sea horses are paired with the male sea horses with the lengths of more than those of the female sea horses by 1cm, at most three pairs of sea horses are put in each vat according to the size of the culturing vat, and the specifications of the three pairs of the sea horses should contain large, medium and small specifications.

The invention relates to a flounder triploid fry batch producing method, which comprises a triploid fry induction method, a method for identifying the triploid produced by the method, and a method for evaluating triploid adult fish growing performance and gonadal development. By the method, a triploid flounder fry batch producing method by adopting low-temperature shock is established, and proper starting time and proper low-temperature treatment time of triploid induction are determined; a method for identifying the triploid fry is established; and the method for evaluating triploid fish growing and gonadal development situation is established. Through the triploid fry induction method, the triploid fry is inducted and generated efficiently in batches, the induction efficiency of the triploid fry is up to 100 percent, the growing speed of the induced triploid fish is 20 percent higher than that of the diploid fish, and the gonad is in diapauses. The method is easy to operate, practical, safe and reliable, has strong practicability, and opens a novel technical method for sex control of paralichthys olivaceus and sole and multiploid breeding.

The invention provides a new-variety reproductive regulation breeding method of lateolabrax japonicus and belongs to the field of fish breeding. Regulation targets of the method comprise a southern group and a northern group respectively; the regulation method includes illumination regulation, temperature regulation, salinity regulation and nutrient regulation; and a special incubation device is used when fertilized eggs are incubated. By regulating southern parent fish through gradually prolonging illumination time, stimulating temperature change, stimulating salinity change and the like, the development of sexual glands of the southern parent fish is facilitated, so that sexual maturity time of the southern parent fish is brought forward to October to December from November to January; and meanwhile, the illumination on northern parent fish is reduced and the northern parent fish is cultured at a low temperature, so that the development of the sexual glands of the northern parent fish is delayed, and the sexual maturity time of the northern parent fish is delayed to October to December from September to November. Therefore, the development of the sexual glands of the southern parent fish and the development of sexual glands of the southern parent fish is synchronized, and ovulation and sperm production are synchronized.

The invention relates to the field of aquaculture, in particular to a manual induced spawning method for platichthys stellatus parental fishes. Trout gonadotrophic hormone releasing hormone analogues (S-GnRHa) and domperidone (DOM) are used for performing induced spawning on the platichthys stellatus parental fishes, and female fishes older than 2.5 years and male fishes older than 2 years are selected for being put into a parental fish breeding pond for ripening acceleration. The sexual maturity is controlled in an intensifying mode through water temperature, illumination stimulation and baits. The S-GnRHa and DOM are used for performing induced spawning on the platichthys stellats parental fishes, medication injection is performed on the female and male parental fishes two times according to weights, so that the effect of performing manual induced spawning on the platichthys stellatus parental fishes is achieved and artificial insemination is performed. According to the method, the platichthys stellatus parental fishes are matured synchronously, spawning can be performed within a preset period in a concentrated mode, the spawning quantity is large, the spawning period is shortened by 10-15 days, the insemination rate reaches 80%, the hatching rate reaches 70%, manual induced spawning is performed on the parental fishes, the success rate of performing induced spawning on the male fishes reaches 98%, and the success rate of performing induced spawning on the female fishes reaches 95%.

The invention discloses a parent fish culturing method for scaled artificial breeding of a finless ell. The method has the advantages of simplicity and easy implementation, and is suitable for the scaled artificial breeding of the finless ell. The method comprises the following culturing steps of 1, erecting a net case; 2, throwing brood fishes; 3, domesticating food intake; 4, carrying out the first time of physical reinforcing culturing; 5, carrying out the first time of overwintering; 6, growing and feeding in the second year; 7, carrying out the second time of physical reinforcing culturing; 8, carrying out the second time of overwintering; 9, carrying out the gonadal reinforcing culturing; and 10, carrying out the artificial breeding, so as to obtain the male and female parent fishes of the finless ell with large brood amount, high breeding capability and high sperm-egg quality. The culturing method provided by the invention has the advantages that the survival rate of the recovered parent fishes can reach more than 95%, the brood amount of one male fish with the weight of 100g can reach 600 to 800, and the hatchability of fries can reach more than 98%.

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 present invention provides an external preparation of dihydrotestosterone. The preparation contains 0.01 percent to 5 percent of the dihydrotestosterone by weight percentage in a medicinal carrier of the preparation uniformly; wherein, the medicinal carrier is selected from solution, suspension, lotion, gel, ointment, cream, paste and patch. The preparation can remedy the primary, the secondary and the senile hypogonadism, the prostatic hyperplasia, the gynaecomastia and the lichen sclerosis et atrophicus. The medicated part can be arm, shoulder, inner thigh, chest, abdomen and genitalia.

The invention relates to the technical field of animal breeding, particularly to a traditional Chinese medicine for promoting andrias davidianus male parent fish gonad maturation, achieving synchronous development maturation of andrias davidianus male parent fish gonad and andrias davidianus female parent fish gonad, and improving an andrias davidianus reproduction rate, and a preparation method thereof. The traditional Chinese medicine is prepared from the following traditional Chinese medicine raw materials, by weight: 15-25 parts of tuber fleeceflower root, 12-20 parts of eucommia bark, 5-12 parts of siberian solomonseal rhizome, 8-17 parts of medlar, 42-50 parts of angelica archang lica, and 0.5-1 part of carp pituitary, wherein the aged tuber fleeceflower root, the defatted carp pituitary, the eucommia bark, the siberian solomonseal rhizome, the medlar and the angelica archang lica are respectively crushed according to the weight part ratio, and then are uniformly mixed to prepare into capsules. According to the present invention, the traditional Chinese medicine is prepared by adopting the traditional Chinese medicine raw materials, no toxic-side effect is generated, synchronous development maturation of andrias davidianus male parent fish gonad and andrias davidianus female parent fish gonad is effectively promoted, an andrias davidianus reproduction rate is increased, pollution on water environment for andrias davidianus growth can not be generated, a sperm amount produced by the andrias davidianus male parent fish can be effectively promoted to be increased by 35-80%, sperm motility is increased to 35-70%, and an artificial fertilization success rate is increased to 70%.

The invention discloses an artificial reproduction method of mandarin fish. The method comprises steps as follows: parent fish culturing, parent fish selection, artificial spawning induction and fish fry incubation. Compared with the prior art, the artificial reproduction method has the advantages as follows: at the reinforced aquaculture stage of parent fish, male and female parents of the mandarin fish are bred respectively, the breeding process of the male parent is simplified to a certain extent, the female and male parents are managed differently according to physiological characteristics, the sexual maturity stage of the parents is advanced, the gonadosomatic index of male fish is optimized, the quality of ovum and the ovulation amount are improved, the fertilization rate and the hatching rate are further increased, the labor intensity for artificial reproduction and the reproduction cost are reduced, and large-scale popularization of artificial reproduction of the mandarin fish is facilitated.

The invention discloses a lossless detection method for the fat volume of hepatopancreas and gonad of Eriocheir sinensis. The 1H MRI technology based method comprises the following steps that (1) the whole Eriocheir sinensis is scanned by using the 1H MRI technology, and 2-D slice imaging is carried out to obtain multiple slices; (2) the fat area of each slice is calculated; and (3) a 3-D model is established to estimate the fat volume of the hepatopancreas and gonad of Eriocheir sinensis. According to the method, the 1H MRI technology is used to detect the fat volume of the hepatopancreas and gonad of Eriocheir sinensis without loss and further to determine the fullness of the hepatopancreas and gonad; and the method has the advantages including high accuracy, high reliability, lossless and rapid detection and simple operation, provides scientific basis for pre-market quality control for Eriocheir sinensis, and has higher popularization and application values.

The invention discloses a sexual artificial propagation technique for hermatypic corals. The sexual artificial propagation technique for hermatypic corals includes: acquiring eligible healthy living parents of hermatypic coals in a natural sea area with hermatypic coal distributed in late March, cultivating hermatypic coal parents under manual control, placing a prepared coral planula attachment device in a parent cultivation aquarium when gonads of the coral parents develop to a stage IV, observing emission and attachment processes of coral gametes, moving the coral parents to other aquariums for temporary rearing after emission of the gametes is finished, and cultivating larvae of the hermatypic corals under manual control. The sexual artificial propagation technique for the hermatypic corals has the advantages that the coral larva survival rate is high, the planula attachment device is stable, the larva natural attachment rate is high, cultivation technical conditions are easy to control and implement, the problems in transplantation of the hermatypic corals when coral reef degeneration is solved and coral reefs are recovered are avoided, and effective solutions can be provided for recovery of the coral reef ecosystem and protection of the marine ecosystem.

The invention discloses a special compound feed for breeding parent shrimps of Litopenaeus vannamei. The special compound feed contains the following components in percentage by weight: 20%-45% of whole squid meal, 5%-20% of Peru fish meal, 5%-15% of copepod dry powder, 2%-5% of enzymolysis fish soluble meal, 2%-8% of spirulina powder, 3%-10% of fly maggot meal, 5%-20% of oyster powder, 1%-4% of enzymolysis beer yeast powder, 1%-4% of sea rhodotorula, 5%-20% of alpha-starch, 1%-3% of soybean lecithin, 1%-5% of squid liver oil, 0.5%-2% of calcium dihydrogen phosphate and 1%-3% of a compound premix. The special compound feed is specially used during the breeding of the parent shrimps of Litopenaeus vannamei and is used for supplying nutrients required by the parent shrimps in the breeding stage; by adding multiple components which can mutually generate synergistic interaction effects, the digestion and utilization of the main nutrients are promoted, the immune capacity and health condition of prawns can be improved, the gonadal maturation quality is improved, and the hatching rate of fertilized eggs and the survival rate of larvae are increased.

The invention discloses an artificial crossing cultivation method of seawater takifugu species. The method comprises screening, cultivating and artificial propagation of parent takifugu, incubating, fingerling cultivating and other processes, and is characterized in that on the basis of fully grasping the breeding ecological environment and gonad growth rules of takifugu obscurus and takifugu flavidus, the takifugu flavidus is used as a female parent and the relatively large takifugu obscurus is used as a male parent to simulate a natural ecological environment; mature gonad and ovulation of the parent takifugu are realized by hormone control; an artificial insemination method is employed to realize hybridization among the takifugu species. Synchronously, in the hybridization process, the ecology management is enhanced; and therefore, the oxytocic rate of the hybridization reaches 95 percent, the fertilization rate, the hatchability rate and the opening rate all reach above 80 percent, and the aberration rate of the fingerlings is below 2.0 thousandth.

The invention discloses feed for sturgeon parent fish as well as a preparation method thereof. The feed is prepared from the following components in percentage by mass: 10 to 50 percent of fish meal,5 to 15 percent of chicken meat powder, 3 to 10 percent of egg powder, 1 to 5 percent of beer yeast powder, 5 to 30 percent of wet brine shrimps, 5 to 10 percent of conch meat, 5 to 10 percent of mussel meat, 5 to 10 percent of oysters, 8 to 25 percent of fermented soybean meal, 8 to 20 percent of flour, 1 to 4 percent of fish oil, 0.5 to 1 percent of soya lecithin powder, 1 to 5 percent of kelp powder, 0.2 to 1 percent of vitamin mixture, 1 to 5 percent of casein protein, 3 to 5 percent of antarctic krill, 1 to 4 percent of mineral element mixture, 1 to 5 percent of microbial agents, 1 to 5 percent of EPA, 1 to 5 percent of DHA, 1 to 5 percent of ARA, 1 to 5 percent of carotene, and 1 to 2 percent of feed attractant. According to the feed for the sturgeon parent fish, disclosed by the invention, a gonadal development condition of the sturgeon parent fish can be improved, a brood amount of sturgeon fish gonad is increased, the color of fish eggs is turned from common black into shallowcolor with a higher value amount, and even turned into scarce golden yellow fish eggs through the physiological metabolism so as to obtain excellent-quality sturgeon fish caviar; meanwhile, a survival ratio can be increased, a feed conversion ratio is increased and a specific growth ratio is increased.

The invention discloses a burbot full-artificial ecological control natural breeding technology. The technology comprises the following steps: (1) selecting burbot adult fish which is bred for over 3 years with large body, robust constitution and no surface damage as parent fish for spawning; (2) performing autumn strengthen breeding on the parent fish to ensure that the sexual gland thereof can be completely developed; (3) putting the parent fish into a spawning pond according to a ratio of male to female of 1:2 for three-month winter low-temperature breeding; (4) simulating natural conditions to stimulate the parent fish to spawn; and (5) transplanting the collected germ cells in spawning equipment for hatching in running water. The technology has the advantages of low cost, simple operation, small damage to the parent fish and high survival rate of delivered parent fish, low requirement to breeding conditions and technical level of operators and is easy to popularize.

The invention discloses a good nacre cultivating method for pinctada martensii. The method comprising the flowing steps: (1) from a certain wild pinctada martensii group, selecting individuals which are larger than 20mm in shell width and larger than 0.35 in ratio of the shell width and the shell height as breeding parents; (2) from the breeding parents, selecting more than 30 female individuals with mature sexual glands and more than 20 male individuals, taking sperms and eggs through cutting, conducting artificial insemination, and breeding spat young shells; (3) consecutively selecting parents according to the step (1) and breeding spat young shells according to the step (2) for more than three generations when bred spat young shells reach 1.5-2.0 years. Consequently, obtained spat young shells can be used for large-scale production breeding and cultivation. The good nacre cultivating method for the pinctada martensii can remarkably improve the forms of shells and enable the shell to be thick, is suitable for core insertion pearl cultivation, and can reduce death and improve pearl cultivation characters.

The invention relates to a soft granular feed special for female sturgeon and a preparation method of the soft granular feed. The feed comprises parent sturgeon expanded feed, and is prepared from the parent sturgeon expanded feed, adult eel formula feed, fish oil, algae extract, vegetable leaves, carrot, frozen trash fish and water. The feed is rich in nutrition, reasonable in formula, high in bait coefficient and high in survival rate, and can be used for promoting metabolism of fish bodies, reinforcing immunity of the fish bodies, promoting development of sexual glands of sturgeon and increasing the diameter of sturgeon roe, wherein carotenoid which is enriched in the vegetable leaves and carrot can be used for promoting pigmentation of sturgeon roe and is harmless to human bodies, so that the color of sturgeon roe is shallowed, even turned into golden yellow; meanwhile, the feed can be used for reinforcing the disease resistance of sturgeon, increasing the survival rate and increasing the size of roe by serving as an antioxidant. The preparation method is environmentally friendly, does not pollute the environment, and can be used for reducing cost and improving the feed utilization.

The invention relates to a culturing technique for clam shells, in particular to a factory culturing method for clam shells, wherein the method comprises the following steps: selecting healthy breeder shells of which sexual glands are matured to perform enrichment culture, then hastening parturition; after the oviposition, removing the breeder clam shells, and thinning the oosperms; when the D-shaped larva hatched from the oosperms closely gather on the water surface, selecting the excellently developed D-shaped larva to put into a culturing pool and culturing into juvenile shells, then adding an adherence; continuously culturing the juvenile shells adhered on an adhering machine until the shell is more than 600 microns in length; and moving the juvenile shells and the adherence to a shrimp pool or the sea for intermediate culture. The process flow is simple, the maneuverability is high and the technique is stable, so that the clam shell can naturally spawn and be fertilized; moreover, the rates of fertilizing and hatching are high; therefore, the problem of the quantity production of the clam shells are effectively solved, and full-artificial factory culture of the clam shells can be realized; and moreover, the method has low cost, fast affecting and great benefits, thereby laying the foundation for the large-scale artifical culture of the clam shells.

The invention discloses a portunus trituberculatus summer green crab cultivation method. The method includes the steps of 1, portunus trituberculatus adult crab cultivation, wherein female young crabs and male young crabs are separately and independently bred till the female crabs reproduce and are unshelled, and adult crabs are cultivated; 2, overwintering breeding, wherein the adult crabs get into an overwintering stage after being cultivated, and the female adult crabs and the male adult crabs continue to be separately bred; 3, mating and sexual gland culture, wherein on April to June of the next year, the water temperature is controlled to range from 18 DEG C to 22 DEG C, the overwintered adult crabs are subjected to mixed breeding according to the ratio of the female adult crabs to the male adult crabs being (1.5-2.5):1, the female adult crabs and the male adult crabs are paired and mated, the mated female crabs are bred at the water temperature of 20-25 DEG C for 30-50 days, the sexual glands of the female crabs fully develop, and the sexual gland index reaches 5% or above. By means of the method, portunus trituberculatus is subjected to female and male separate breeding, it is effectively avoided that the portunus trituberculatus is mated and develops in autumn and winter, the portunus trituberculatus is mated out of season by manually regulating the water temperature, and summer green crabs with fully developing sexual glands can be smoothly cultivated and obtained.

The invention discloses a method for promoting mating and oogenesis of freshwater shrimps. The method comprises the following key points that 1, high-quality parents are selected in late autumn to serve as backup parent shrimps to make preparation for scale young shrimp breeding of next year; 2, enhanced cultivation is performed on the parents in autumn, winter and spring to accumulate a good material basis for gonad development of the parents; 3, temperature increasing is performed in a workshop for promoting maturity of the parents in advance, the temperature is gradually increased to be within the temperature range required by freshwater shrimp breeding, sufficient amount of high-quality feed is put, and gonad maturity development, mating and spawning are promoted. According to the method, through an ecological regulation and control method, the mating rate of the freshwater shrimp parents can reach 90% or above without using any medicine, the parents can mate and spawn nearly one month in advance, the seed cultivation survival rate is increased, the growth period of young freshwater shrimp cultivation and adult shrimp culture is made ahead, and the high popularization value is achieved in northern China.

The invention provides a method for completely and artificially breeding palaemon carinicauda parent shrimps indoors and belongs to the technical field of palaemon carinicauda artificial breeding. The method comprises the steps of water quality control, larval shrimp selection, density setting, water temperature control, feeding and water change, gonad development adjustment and gonad mature judgment. The water quality control is that water temperature is controlled to be 24-28 DEG C in the whole breeding process. The feeding and water change is that a matched feed is fed before the palaemon carinicauda grows to 2cm, clam meal and fresh alive clam worms are fed when the palaemon carinicauda grows to 2cm, and the daily water changing amount is 20%-30%. The gonad development adjustment is that when female shrimp ovaries develop to an II-III period, female shrimps identical in gonad development degree are bred in the same aquarium, and breeding water temperature of a group of shrimps with low gonad development speed is improved by 2-4DEG C. The gonad synchronous development and mature of palaemon carinicauda are achieved through feed selection, density setting and water temperature control in the breeding process of the palaemon carinicauda parent shrimps, and large-scale indoor artificial breeding of the palaemon carinicauda is facilitateed.

The invention discloses a method for synchronous line establishment of small-population parents in artificial breeding of exopalaemon carinicauda. In non-high-breeding season at relatively low water temperature, water temperature is regulated and controlled in three development stages (parent prawn gonad development stage, zygote embryo development stage and larval development stage) by virtue of a temperature control method, so that families established by small-population parents in different gonad development stages can develop into a post-larval stage at the same time as much as possible, and the synchronous line establishment of the small-population parents is finally achieved. By respectively setting temperature gradients according to the suitable temperature ranges of the exopalaemon carinicauda in different development stages, the method disclosed by the invention is conducive to the shortening of development time difference of various parent progenies, and capable of achieving the synchronous line establishment and multi-generation breeding per year of the small-population parents in the artificial breeding of the exopalaemon carinicauda.

The invention discloses a swamp eel feed and a preparation method thereof. The swamp eel feed disclosed by the invention comprises the following components as raw materials: flour, bean meal, super-steam fish meal, cottonseed meal, corn protein powder, bentonite, beer yeast, spray-dried blood cells, squid extract, lees protein feed, wheat gluten powder, calcium dihydrogen phosphate, castor seed powder, lecithin oil, fish oil, choline, a mildew-proofing agent, vitamin C, an antioxidant, inosite, carnitine, specific trace elements for the fishes, and specific multivitamins for the fishes. The swamp eel feed is capable of promoting weight gaining of the swamp eels by inhibiting gonadogenesis and spontaneous ovulation of the swamp eels during the gonadal development periods of the swamp eels, so that the economic benefits are increased. The preparation method of the swamp eel feed disclosed by the invention is simple and convenient to operate, and is beneficial for improving of the breeding efficiencies.

The invention provides a turbot parent fish gonad maturity accelerated cultivation method. According to the turbot parent fish gonad maturity accelerating cultivation method, by regulating an opticaltime and a water temperature, the parent fish maturity accelerated cultivation time can be effectively shortened; and by combining with breeding management, the sexual maturity rate of turbot parent fishes is increased; and by providing excellent independent closed maturity accelerating cultivation environment to the turbot parent fishes, adopting a scientific temperature and light control methodand developing a high-quality fresh parent fish feed, the purposes of effectively shortening a parent fish manual maturity accelerated cultivation period, increasing a parent fish gonad development and maturation ratio and acquiring high-quality fertilized eggs are realized.

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.