885 results about "Broodstock" patented technology

A high efficiency recirculating marine aquaculture process for producing fish at variable yield densities of up to 60 kg/meter3 of the aquaculture tank, including fish that spawn under short photoperiods such as gilthead seabream (Sparus aurata) as well as fish that spawn under long photoperiods such as striped bass (Morone saxatilis). The process involves broodstock conditioning, spawning/reproduction, larval growth, nursery, and adult grow-out operations. The process is characterized by high-rate growth at optimal process conditions requiring less than 10% daily water exchange, thereby enabling effluent waste from the system to be discharged to a municipal sewer after disinfection treatment, which in turn permits siting of the aquaculture process facility in urban/suburban locations where aquaculture processes have been previously infeasible.

The present invention relates to a recirculating marine aquaculture process for production of a crab species, including (i) a broodstock conditioning, (ii) spawning, (iii) egg incubation, (iv) larval growth, (v) nursery post-larval growth, and (vi) grow-out of the crab to a final product weight, in which each stage (i)-(vi) of the process involves operation in an aqueous medium that is coupled in liquid recirculation relationship with means for removing waste components from the aqueous medium and returning purified aqueous medium to the external environment. The process involves operation in a closed, recirculating aquaculture system in which photoperiod, water temperature, water chemistry, and diet are optimized and then continuously monitored and controlled to obtain optimal production at each of the six phases (i)-(vi) of the life cycle.

The present invention is artificial breeding method and incubator for Shatang carp. The artificial breeding method includes the steps of parent fish breeding, spawning and fertilization, hatching and carp fry culturing. After intensified parent fish breeding, temperature control, flow water stimulation and other method are taken to promote the synchronous spawning and fertilization of parent fishes, the fertilized eggs on tiles are sterilized and hatched in a special hatching device, and the hatched carp fries are cultured in a special cement pond. The artificial hatching device is one rectangular hatching tank with shield, ventilating water circulating pump, water level and water flow controlling mechanism. The technology of the present invention is suitable for large scale production of Shatang carp fry.

The invention discloses a mimic ecological propagation method for breeding parent fish of American hilsa herring, comprising the following steps: establishing a mimic ecological breeding system suitable for natural growth and maturity of the sexual gland of hilsa herring by adopting a circulation water breeding technique and an automation control technique of water environmental factor; regulatingthe mimic natural seasonal rhythmicity for the major physical factors, water chemical factors, and the like of the breeding environment, including factors such as salinity, water temperature, water flow and period of lighting daily variation while fortification; injecting hormone to the parent fish before the spawning season to promote maturity of the sexual gland, and causing the hilsa herring to spawn naturally through enhance water flow stimulation; arranging a spawn collecting box at a circulation water outlet to collect the germ cells and then placing the germ cells in a semi-floating germ cell separation incubator for incubation. The invention can remarkably improve the spawning efficiency of the parent fish of hilsa herring and the incubation rate of the germ cell, and provide thetechnical support for the industrialization of artificial propagation technique for breeding hilsa herring.

A loach fish fry artificial cultivation method is characterized by comprising spawning and hatching process, 7-day (d) fish fries cultivation and 15 d fish fries cultivation, wherein the spawning and hatching process comprises the following steps: parent fish rearing and selecting; artificial induction; fertilization process; and fertilized egg hatching process. A loach fish fry reinforced cultivation method comprises the following steps: adopting indoor flat surface slot to cultivate the 7 d fish fries and the 15 d fish fries, reinforced culturing fish fries, stocking loach fish fries to a pond after the 7 d fish loach fish fries and the 15 d fish fries grow up, and thereby greatly improving fish fry indoor cultivating survival rate and fish dries pond descending survival rate. A result of an experimental research shows that: the indoor cultivating survival rate of the 7 d fish fries reaches up to 87.8 percents, the pond descending survival rate reaches up to more than 30 percents, the 15 d fish fries reaches up to 92.6 percents, and the pond descending survival rate reaches up to more than 50 percents. The loach fish fry artificial cultivation method is scientific and rational, easy to implement, and good in practicability. By using loach fish fry artificial cultivation method, the fish dries pond descending survival rate can be greatly improved, and good economic benefit can be obtained.

An artificial reproduction method for schizothorax includes choosing parents fish, culturing, fertilization, incubation and culturing fry.

A method for culturing the minnow of roughskin sculpin includes such steps as capturing the parent fish in near sea in early spring, temporarily culturing in indoor pool, using flowing water to stimulate the parents for estrus, natural mating, ovipositing, collecting fertilized ova, natural incubating in natural seawater in pool, regulating illuminance for correcting the strong phototaxis, applying nutritive forage, improving water quality, and post culturing.

The invention discloses an artificial breeding method for Acrossocheilus fasciatus, comprising the following steps: strengthening parent fish, spawning, collecting eggs, hatching and growing seedlings; accelerating maturity by utilizing granulated feed, wherein the content of the crude protein in the granulated feed is high; strengthening by utilizing granulated feed added with vitamin E, wherein the content of the crude protein in the granulated feed added with vitamin E is high; when water temperature is not lower than 22DEG C, accelerating oviposition by hastening parturition micro water changed once every 12 hours and a sand table; taking out of the sand table after the eggs are fertilized for 1-1.5 hours; when the water temperature is 23-25DEG C and the flow rate is 8-10 hours, replacing water once; hatching without direct irradiation of sunlight; when the water temperature is 22-25DEG C and the flow rate is 10-12 hours, replacing water once; and mixing an earthworm pulp serving as an opening bait with a powdery feed, and feeding. By utilizing the method provided by the invention, after artificial propagation, less parent fish die, and the parent fish can be repeatedly propagated; the oviposition rate can reach 70-85%, the hatching rate is 50-70%, and the fish fry survival rate can reach 60-80%; and great quantity of fish fries can be obtained, and seedling protection is provided for large-scale artificial breeding.

An intensive fry breeding system of Pelteobagrus fulvidraco includes a disease prevention and control region for fish body quarantine and sterilization of personnel, tools and water entering the system; a parent fish sorting region including at least one parent fish temporary culture pond for cleaning and specification sorting of parent fishes entering the system from outside; a parent fish spawning inducement region including at least one spawning inducement pond and at least one injection workbench for performing injection spawning inducement to parent fish; an artificial insemination region for completing artificial spawn collection, artificial insemination, artificial debonding and washing; a spawn hatching region including at least one set of fry hatching device for hatching spawn into fry; and a fry temporary culture region including at least one fry temporary culture pond for temporary culture and first-feeding, wherein the disease prevention and control region, the parent fish sorting region, the parent fish spawning inducement region, the artificial insemination region, the spawn hatching region and the fry temporary culture region are all arranged at the production site. The above functional regions are adjacent in sequence. The inventive system has novel facilities, industrialized and large-scale fry breeding and reduced fry propagation cost, and is small in land occupation and low in water consumption.

The present invention relates to an artificial breeding and pisciculture method of murrel, including the following steps: selecting piscicultural pond, breed selection of parent fish and cultivating,artifically-hastening parturition, spawning and fertilization, fish roe incubation and fish fry cultivation. In the course of spawning and fertilization, after the fertilized eggs are incubated and the fish fries are obtained, the parent fishes can be taken out. The health mature parent fish can be used as seed fish, and the ratio of male and famel is 1:1, and its propagation coefficient and percentage of success are high.

The invention discloses an artificial breeding method for siganus oramin. Siganus canaliculatus and Siganus fuscesens are common fish stocks of Siganus, the physiological characters, reproductive habits and the breeding methods of the Siganus canaliculatus and Sigauns fuscesens are more similar, the problems that the source and domestication are difficult, newly hatched individuals are small in body size, the death rate caused by strong irritability of larva is high, a systematic artificial breeding technique is in shortage, the breeding offspring seeds are mainly from natural seedlings captured from ocean, and the like exist in the artificial breeding process. The artificial breeding method adopts the technical measures of parent fish culturing, cultivation, artificial spawning and incubation, larva cultivation pool preparation, cultivation water quality conditioning, staged bait feeding and juvenile fish transportation, so that the industrialization production of parent fish supply and seedling culture is realized, and the technical problems of artificial spawning and incubation of parent fish, selection and enrichment of larvae bait, water quality regulation and control, larva transportation and the like in the artificial breeding process of Siganus canaliculatus and Siganus fuscesens are systemically solved. The spawning rate of the cultivated parent fish can reach more than 65 percent, the average spawning fertility rate can reach more than 85 percent, and the survival rate of artificial breeding is 10.7 percent-27 percent.

The invention discloses a fish nest used for breeding loach artificially, which comprises a pot with an opening at the top and palm barks. The pot has a double-layer structure, a separation net with 10 to 15mm of meshes is fixedly arranged between an upper layer and a lower layer, and the middle part of the upper surface of the separation net is provided with an inducing fish nest. The palm barks are laid on the inducing fish nest. The lower layer of the pot is provided with an egg-collecting bed with mesh holes which are less than or equal to 120 meshes, and the area of the egg-collecting bed is larger than 90 percent of the area of the pot bottom. At least a net piece at one lateral side of the lower layer of the pot is connected with a pot body in demountable form. The fish nest of the invention can effectively prevent parent fishes from swallowing germ cells, and the egg grain at the bottom of the pot can also be collected, which further improves the hatch rate of the germ cells, improves the breeding quantity of unit parent fish, thus being convenient for using and having good application prospect.

The invention relates to the technical field of fish artificial propagation, in particular to a large-scale artificial propagation method for odontobutis potamophila. The large-scale artificial propagation method for odontobutis potamophila includes the steps: 1) parent fish rearing: feeding baits to parent fish before fry production, and performing parent fish strengthening cultivation for intensifying nutrition, promoting gonad development and increasing brood amount; 2) egg reproduction: hanging spawning nests at a spawning pool; and 3) parent fish egg protection and incubation: putting spawning nests with fish eggs and male parent fish in an incubation pool for incubation. By means of the technical scheme, manpower and material resources can be saved, production steps can be simplified, production efficiency is improved, and fry requirement of large-scale aquaculture can be met.

The curled-lip mandarin fish and spotted mandarin fish hybridizing propagation process includes the following steps: 1. reinforced culturing curled-lip mandarin fish as female parent fish and spotted mandarin fish as male parent fish; 2. injecting exogenous hormone to promote mature and induce spawning, flowing water stimulating to promote spawning, artificial dry insemination and managing during hatching, so as to reach spawning rate over 80 %, fertility rate up to 83.5 % and hatching rate up to 89 %; and 3. staged culturing of the hybrid mandarin fish and feeding habit conversion from live fish to non-live feed, so as to reach survival rate of hybrid mandarin fish fry up to 60 %. The hybrid mandarin fish has good taste, high disease resistance, high growth speed and capacity of ingesting non-live fish feed.

The invention discloses a breeding method for the improved variety of fishes. The breeding method comprises the following steps of: a. selection of ripe fishes; b. parental hybrid; c. parental mark; d. family construction; and e. improved variety breeding. By adopting the technical scheme, the family for the bred largemouth black bass is established, the families of the largemouth black bass are mated and novel variety of the largemouth black bass which has high quality, high yield and stable yield is suitable for the breeding environment in China is bred.

The invention discloses a compound feed capable of enhancing reproductive capacity of a parent dace and aims at providing the compound feed capable of enhancing the reproductive capacity of the parent dace, the gonad index of the dace, the egg diameter, the egg laying amount, the fertilization rate of the parent dace, and the fry hatching-out rate. According to the technical scheme, the feed consists of basic ingredients and a Chinese herb medicine additive according to a mass ratio of (99.5-99.9):(0.1-0.5), wherein the basic ingredients include 20-30 parts of wheat, 4-6 parts of rice bran, 6-8 parts of vinasse, 20-30 parts of rapeseed meal, 15-20 parts of bean meal, 10-18 parts of a maize gluten feed, 2.5-4 parts of bean oil, 1 part of monocalcium phosphate, 1 part of bentonite, 0.5 part of multi-vitamin and 1.0 part of complex mineral matter; and the Chinese herb medicine additive consists of: 2-5 parts of saffron, 8-20 parts of glossy privet fruits, 5-20 parts of leonurus heterophyllus, 5-15 parts of officinal magnolia bark, 7-18 parts of Chinese magnoliavine fruit and 6-10 parts of liquorice. The compound feed belongs to the technical field of fish feeds.

The invention discloses a full-artificial breeding method for megalonibea fusca. The method comprises the following steps of: getting parent fish seeds from natural sea areas; carrying out reinforced breeding on parent fish; carrying out artificial spawning on the parent fish; carrying out hatching on fertile eggs; carrying out indoor artificial cultivation on juvenile fish; carrying out indoor nutrition strengthening cultivation on the juvenile fish in an alevin stage; carrying out ecological breeding on the alevin which are moved into an earthen pond after the alevin stage; and breeding thealevin into large-size seedlings, and the like. The full-artificial breeding method provided by the invention is a mode applicable to the large-scale production of megalonibea fusca fries. After carrying out three-year cultivation on first-generation juvenile fish which is successfully artificially bred, sexually-matured first-filial-generation parent fish is cultivated, and then second-generation juvenile fish is bred from the first-filial-generation parent fish, thereby achieving the full-artificial breeding. The full-artificial breeding method breaks through the bottleneck that because themegalonibea fusca belongs to endangered fish species, parent fish sources are extremely difficult, and realizes the large-scale artificial breeding and culturing industrialization of the megalonibea fusca.

The invention discloses a method for incubating largemouth basses ahead of time. By using the method, the largemouth basses are bred in a greenhouse, sexual maturity is achieved ahead of time, and the largemouth basses are bred artificially. The method comprises the following steps of selecting largemouth basses with the weight of 0.5-0.8 kilogram in the middle ten days of the October and breeding the largemouth basses in the greenhouse in cold days; controlling the temperature of water from the middle ten days of the October, controlling the temperature of the water in the January to be in a range of 11-13 DEG C, then gradually raising the temperature of the water, and raising the temperature of the water to be in a range of 20-22 DEG C in middle ten days of the March; anatomically observing the condition of sexual maturity of parent basses; injecting oxytocin to the parent basses at the beginning of the April, and enabling the parent basses to lay eggs in a plastic-covered tunnel with palm sheets; and placing the palm sheets with germ cells in an indoor incubation pond and incubating the germ cells. By using the method, 1281 fries with the total length of 3.5 millimeters are obtained. At the present stage, largemouth basses cannot be artificially incubated in the northern China, and particularly, the largemouth basses cannot be incubated in the April of the northern China. The largemouth basses fries can be obtained ahead of time for 40 days. The growing period of the fries in the current year is prolonged for 40 days.

The invention discloses a method for comprehensively regulating and controlling verasper moseri gonad maturity and ovulation by using temperature, illumination and nutrition. The method comprises the following steps: regulating and controlling synchronous development of parent fish gonads by using temperature and illumination in 2 to 3 mouths before a breeding season begins; adding additives such as lecithin and the like into baits to promote nutrition absorption of parent fish when the parent fish gonad development is started; and increasing fed clam worms every day to promote final maturity and quality promotion of oocytes after the parent fish gonads are developed to a III period. The ovulating parent fish rate under the regulation and control of the method is up to 85 percent, and the spawning effect is good. The method can be used for scale production of offspring seeds; and by using the method, mass good-quality germ cells can be obtained, and smooth operation of offspring seed breeding can be ensured.

The invention discloses a method for promoting fish gonad maturity, which employs comprehensive adjustment of water temperature adjustment, light emitting adjustment and nutrition adjustment and technology preventing clit insect. The gonad of fish cultured from late February to early March and adjusted with said comprehensive adjustment matures more than one month earlier than that of in natural condition, and gonad of parent fish cultured in the middle October and adjusted with said comprehensive adjustment is about four months earlier than that of in natural condition, which advances fish breeding time. The fecundity is increase in Zhejiang province, the quality of ovum and sperm is improved, the fertility rate is 62.5%, rate of hatchability is 60.1%, and seeding survival rate is 15%.