55 results about "Fish reproduction" patented technology

The invention relates to a method for artificially hastening parturition of American reeves shads, inseminating and hatching germ cells, belonging to the technical field of fish reproduction. The method comprises the following hatching steps: preparation process of transporting ripe fishes, feeding momentarily, and the like and an artificial parturition hastening process of injecting hormone twice; completing an artificial insemination process by two persons in a matching mode; adopting a hatching process of a running water hatching device without dead angles at hatching water temperature below 16-22 DEG C; and opening in time for feeding after fries are hatched for 2-3 days. The method is reasonable and scientific, optimizes an artificial insemination technology, manufactures the runningwater hatching device without dead angles, has convenient and reliable operation, and can ensure the stable production of fries and better solve the problem of scale production of American reeves shadfries; and the hatching rate of the germ cells reaches above 80 percent.

The invention belongs to the technical field of fish reproduction and relates to a method for ultralow-temperature cryopreservation of semen of siniperca scherzeri and artificial insemination in crossbreeding, which can be widely applied in culture of siniperca chuatsi in families and groups, especially large-scale culture and reproduction. The method comprises the steps of semen collection, diluent preparation, semen dilution, semen freezing, semen unfreezing, artificial insemination and the like. In the artificial insemination, as the optimum ratio of frozen sperms to fresh spawn is determined to be 1000000:1 by different experiments about sperm-spawn ratio. In the invention, the requirement for equipment is low, the operation is easy to realize, the method can be used for common fish reproduction fields, can realize storage of siniperca scherzeri resources, solves the problem of asynchronous growth of gonads of the siniperca chuatsi and the siniperca scherzeri in crossbreeding of siniperca, and increases the utilization ratio of the sperms of the siniperca scherzeri, and in the reproduction process, the sperm-spawn ratio can be flexibly adjusted according to the breeding requirements, the production need and the amount of parent fishes.

The invention provides an artificial sea bass breeding method suitable for river mouth areas. According to the method, the artificial sea bass breeding suitable for the river mouth areas is realized by virtue of the steps of parent sea bass selection and domestication, parent fish reproduction, fertilized ovum incubation, indoor fry cultivation, outdoor fry cultivation, fry screening and fry taking-out. The method is used for solving the key problems such as parent sea bass selection standards and domestication environment condition requirements, artificial parent fish ripening and spawning induction methods, artificial fertilization method, fertilized ovum incubation condition requirements, fry cultivation condition requirements, indoor and outdoor fry cultivation and bait transformation; the survival rate of sea bass fry stocking and the breeding efficiency can be remarkably improved; in short, the method is significant for the healthy development of the sea bass breeding industry in the river mouth areas of Pearl River Delta.

The invention relates to a method for inducing gonad maturity and ovulation of a verasper variegates parent fish by implanting a slow-release hormone, which comprises two aspects of cultivating an optimally selected parent fish and adjusting temperature and light to promote the gonad development of the parent fish, and implanting the slow-release hormone for promoting a metrocyte of the parent fish to reach final maturity and ovulation. In the invention, the slow-release hormone is a salmon gonadotropin-releasing hormone analog (sGnRHa) and is coated with a safe and high-efficiency polymer slow-release transitive system (95 percent of cholesterol and 5 percent of cellulose); a female parent fish with gonad in fourth stage is selected by using a living body sampling method or a light table method; a special implanting gun is used for implanting in back muscles, and the effect time of the slow-release hormone lasts for 14-18 days. The method can enable the metrocyte of the verasper variegates parent fish to achieve final maturity and ovulation, has low duress on parent fish reproduction, high rate of parent fish survival and gonad maturity, high fertility rate being 72 percent and high hatching rate being 56.2 percent, and can acquire a bulk of high-quality oosperms. The invention is a set of complete control technique method, can stably regulate and control the development, the maturity and the ovulation of the gonad of the verasper variegates parent fish, and acquire high-quality oosperms.

The invention relates to a water reservoir ecological dispatching method, in particular relates to an ecological dispatching method of a river channel type water reservoir suitable for home fish breeding. The ecological operation for a water reservoir which is suitable for home fish spawning is implemented at the home fish egg reproduction period based on a corresponding-period water reservoir regular dispatching process to make an 'artificial flood peak' process, so as to creat hydrologic conditions which are suitable for home fish breeding at the downstream. Through continuously reducing the leakage amount of a dam, a space for continuously leaking water is provided in the later stage and the daily amplification flow rate of the downstream is guaranteed, so that a good ecological environment is provided for the home fish breeding. The dispatching method disclosed by the invention meets the benefits of the conventional flood control, power generation, navigation and the like of a river channel type water reservoir, and also considers the ecological benefits of the downstream of the river channel type water reservoir, so that the benefit relation between water-power engineering and ecological protection of the reservoir is effectively coordinated; and the dispatching method has the advantages of strong operability and practical applicability.

The invention relates to the technical field of aquaculture, in particular to a large-scale artificial propagation method for mackerels. The method comprises the steps of parent fish domestication, parent fish intensifying culture, parent fish reproduction, egg laying and incubation, fry breeding and management, fry grading and sub-pool management, fry selling and the like. Parent fishes are subjected to scientific management and gradual domestication, and the problem that the mackerels die instantly leaving water is solved. By means of intensifying culture and procreation regulation and control on the parent fishes, enough mature parent fishes and high-quality oosperms are provided for large-scale fry breeding; by means of scientific fry breeding management, fry breeding water is comprehensively treated, the fry breeding process is regulated and controlled, the mackerels are fed with fry initial bait, safe biological feed and special artificial food stepwise in proportion, grading andsub-pool management is adopted, and the fry breeding survival rate and the fry quality are improved. According to the large-scale artificial propagation method, the key technology of large-scale artificial breeding of the mackerels is solved, the fry breeding survival rate is high, an efficient and new fry breeding technology and a new mode are provided for the industry, and efficient and healthydevelopment of high-end seawater fish breeding of China is promoted.

The invention discloses an artificial reproduction method of chalcalburnus chalcoides aralensis. The artificial reproduction method includes steps of rearing and selecting parent fishes, artificially spawning, inseminating and incubating. The fully-artificial reproduction method which is reasonable, high in operability and massive in production of fry of chalcalburnus chalcoides aralensis is provided, and by optimizing the parent-fish rearing technology and utilizing three different spawning medicines for artificial spawning and inseminating, spawning rate, roe fertility rate and fry incubation rate in parent fish reproduction are increased to 88.2%, 97.0% and 83.64% respectively. The artificial reproduction method is scientific, reasonable and high in operability, industrialized production can be realized by the artificial reproduction method, fry can be provided for large-scale breeding, and high economic benefits are increased.

The invention provides a power-driven air-pressure egg taking device for fish artificial reproduction, and relates to an egg taking device used in the fish artificial reproduction process. The power-driven air-pressure egg taking device aims to solve the problems that in an existing fish artificial reproduction process, stronger strength of hands is needed to squeeze the abdomen, the technical levels of operators are different, the parent fish is damaged easily when the abdomen is squeezed, and death is caused; the number of the large-scale produced parent fish is large, the labor intensity is high, and the working efficiency is low. According to the power-driven air-pressure egg taking device, a power-driven air inflation pump and an air inflation bag are utilized to inflate and squeeze the abdomen of a fish body, so that an original artificial manual operation is changed to mechanical operation of the power-driven air inflation bag in the female parent fish egg taking process, the labor intensity is lowered greatly, and the working efficiency is improved by 75% compared with the traditional method; through appropriate control of a airflow control valve and an air pressure gauge, the operation process of egg squeezing through the air inflation bag is made to be more stable and even, harm to the fish body is lower, and the death rate of the female parent fish reproduction is reduced by 50% compared with the traditional method. The power-driven air-pressure egg taking device is suitable for being used in the fish artificial reproduction process.

The invention relates to a method for improving the mating rate of black rockfish parent fish under the condition of industrial aquaculture and belongs to the field of fish reproduction. The method is characterized by comprising the following steps: a, selecting parent fish; b, establishing an indoor culture pond; c, stocking the parent fish, d, controlling water source and water temperature; e, controlling water quality; f, choosing and feeding bait; g, controlling lighting; and h, managing during mating period. By controlling lighting, water temperature change and bait feeding, the method can improve the mating rate of the black rockfish parent fish under indoor environment, thereby obtaining successful mating parent fish which can produce black rockfish seedlings in batch. By adoption of the method, the indoor mating rate of the black rockfish parent fish can reach more than 95%, and meanwhile, the black rockfish parent fish which is reproducing indoors can be repeatedly used, so that wild resources are effectively protected, the quality of the black rockfish parent fish is increased, a foundation is laid for obtaining high-quality fish seedlings, and the method of indoor artificial reproduction of the black rockfish is innovated.

The invention relates to a maze-shaped artificial fish reef, and belongs to the technical field of fish culture. The invention provides the artificial fish reef which is of a stair landing-shaped structure, a square refuge chamber communicated with the outside world is formed in the center of the top of a reef body, the side faces of the front and the back of the reef body are divided into five parts through cuboids parallel to the axis direction of the end face, the side faces of the left and the right of the reef body are divided into three parts through cuboids parallel to the axis direction of the end face, the side walls of the periphery of the reef body are divided into six parts through cuboids perpendicular to the axis direction of the end face, transverse and longitudinal three-dimensional parts form the shape similar to a maze, the reef body space utilization rate and the reef body surface area are increased, and the artificial fish reef is suitable for various fishes to gather in, allows the fishes to conduct inhabiting, reproduction, feeding and concealing, and creates an excellent environment for fish reproduction. The reef body is good in permeability, the surface area of the reef body is increased, and growth of attaching organisms such as shellfishes is promoted; meanwhile, water flow is dispersed, water quality exchange is increased, and sediment burying is reduced.

The invention relates to the field of cuttlefish seedling raising breeding, in particular to a seedling breeding method of pharaoh cuttlefish. The method comprises the steps of 1) construction of a spawning breeding pond; 2) optimization of the spawning breeding pond; 3) putting of pharaoh cuttlefish parents; 4) strengthening culture; 5) egg collection; 6) hatching; 7) seedling raising. During strengthening culture, argyrosomus argentatus or minnows containing additives capable of improving the reproductive performance of the parent pharaoh cuttlefish are adopted as baits; during hatching, thewater is controlled to be increased and decreased to simulate the water pressure change of tide rising and falling of the sea; during seedling raising, seedlings are fed to a growing stage with a series of baits including artemia nauplii, copepods, live possum shrimp larvae and dead possum shrimps in sequence. The method helps to accelerate the gonad maturation, improves the gonad development process, shortens the spawning cycle, significantly increases the hatching rate of fertilized eggs, significantly improves the robustness of the cuttlefish larvae, reduces the number of dead eggs and dead seedlings, improves the seedling raising efficiency, and increases economic benefits.

The invention relates to a special nutrition enhancer for parent fishes of cold water fishes and a use method of the special nutrition enhancer, and belongs to the technical field of aquaculture. According to the genders of the parent fishes, the enhancer is divided into a special nutrition enhancer for male parent fishes and a special nutrition enhancer for female parent fishes; the special nutrition enhancer for the male parent fish comprises a special nutrition enhancer for section-I male parent fishes and a special nutrition enhancer for section-II male parent fishes; and the special nutrient enhancer for the female parent fishes comprises a special nutrient enhancer for section-I female parent fish, a special nutrient enhancer for section-II female parent fishes and a special nutrientenhancer for section-III female parent fishes. Different raw material formulas are selected according to the growth characteristics of the parent fishes in different time periods, and nutrient enrichment is carried out at different times, so that the nutrient state of the parent fishes of the cold water fishes is improved. The special nutrition enhancer has the advantages of scientific formula, reasonable process, convenience in use and strong pertinence, supplements special nutrient elements in a breeding production process of the parent fishes of the cold water fishes, and improves the reproductive capacity of the parent fishes by adding functional substances.

The invention belongs to the technical field of fish reproduction and discloses a method for reproducing snakehead fishes by using artificial insemination and a hatching barrel. The method comprises the following steps: temporarily rearing selected parent fishes in a cement pond at the water temperature of 25-26 DEG C and performing spawning induction; in the cement pond at the water temperature of 28-29 DEG C, after the effect time, carrying out inspection and ore squeezing once every 2 h, three times in total; temporarily rearing parent fishes after ore squeezing, preventing inflammation with a penicillin agent to keep the survival rate of female parent fishes at 75% or above; taking testes from male fishes, and grinding the testes in a sperm preservation solution in a separated manner with a metal net; and before fertilization, activating sperm in the sperm preservation solution, then pouring ores for fertilization, hatching the ores in the hatching barrel after leaving the ores tostand for more than 2 h, and inflating the hatching barrel; taking out fertilized ores after hatching the ores in the barrel for 2 days, and performing fry culture after yolk sacs are absorbed 1-2 days later. The method significantly the utilization rate of female parent fishes and the survival rate of the female parent fishes after spawning, reduces field occupation and increases the fry hatchingsuccess rate.

The invention relates to a compound fish guano containing amino acids. The fish guano is prepared from aquatic plants, a mineral fertilizer and a decomposed worm additive as main components. In addition, amino acids, selenium-rich soybean meal, distillers' grains and sugar are added to the fish guano, and fungi such as bacillus subtilis, algae fungi, yeast microflora, and bdellovibrio bacteriovorus are added to the fish guano too. The components are environmentally friendly in sources, green, cheap, and rich in nutrients. The fish guano is beneficial for fish reproduction, can expand a survival rate, play an important role in maintaining the amino acid balance of water body, and can also regulate micro-ecological balance in the intestinal tracts of fish bodies, decompose harmful residues in the fish bodies, and enhance the disease resistance of fishes.

The invention discloses a feed for parent fish of turbot. The feed is prepared from the following raw materials: corn powder, bran, peanut meal, soybean meal, blood powder, zeolite powder, compound amino acid, compound vitamin, black fungi, lotus root residues, duckweed, sansevieria trifasciata, cacti, hemistepta lyrata, herb of Japanese thistle, herba violae, japonese pearlwort herb, herb of prostrate euphorbia and beer yeast. The feed for parent fish of turbot, which is provided by the invention, has the advantages that the feed is rich in raw materials, is balanced in nutrients, provides the nutrients required by parent fish reproduction, has the effects of boosting immunity and promoting reproductive cell growth, is concentrated in propagation time and has the effects of saving manpower and material resources and saving the breeding cost by 12.7%; through high temperature short fermentation with the beer yeast, the fragrance of the feed is increased, the palatability of the feed is increased and absorption and utilization of the feed are promoted; after being decocted and extracted, various Chinese herbal medicines are added together with the dregs, so the utilization rate is high, the effects are quick and lasting, the morbidity of the parent fish is reduced to 0-1%, and meanwhile, the resistance of the reproductive cells can be enhanced and the survival rate of hatched fries can be increased to 31%.

The invention discloses an artificial propagation method for yellow-shell fishes, and relates to the field of fish culture. The artificial propagation method for the yellow-shell fishes comprises seven steps of parent fish selection, parent fish feeding, establishment of an induced spawning and hatching workshop, artificial induced spawning, artificial fertilization, artificial hatching and seedling management. According to the artificial propagation method for the yellow-shell fishes, the wheat and barley malt are fed to increase the development degree of gonads of the yellow-shell fishes and improve the reproductive capacity of the yellow-shell fishes, parent fish is covered with a black net after being injected with spawning induction medicine, in addition, due to flushing stimulation of water, the negative influence of external light on the parent fish is relieved, the effect of hormone can be stimulated to give full play in the parent fish, and the spawning induction effect is improved; the air temperature and the water temperature are accurately controlled in the spawning induction process, the strict requirement for the temperature in the yellow-shell fish breeding production process is met, the details such as the needle inserting depth for injecting spawning induction medicine are accurately controlled, and the method is scientific, efficient, practical, easy to operate and beneficial to application and popularization.

The invention provides a culture and artificial propagation method of Schizothorax eurystomus kessler, and belongs to the technical field of freshwater fish propagation and the field of freshwater fish culture. The method comprises 12 technical key points of parent fish culture pond construction requirements, fry culture pond construction requirements, wild parent fish catching and domestication,parent fish intensive culture, mature parent fish selection, oxytocic preparation and injection, oxytocic process management, artificial spawn extrusion and insemination, spawn incubation and incubation management, fry culture, juvenile fish culture and juvenile fish culture. According to the breeding and artificial propagation method, the pond is convenient and practical, wild parent fishes are rarely injured, the maturity rate of the parent fishes is high, the brood amount is large, the maturity time is controllable, the egg squeezing time point is accurately grasped, the yield is stable, the fertilization rate, the hatching rate and the survival rate are high, the quality of eggs and fries is reliable, and the whole artificial propagation technical process is systematic and comprehensive.

A medicine for dual-approach regulation to the fish reproduction is prepared from gonadotropin-releasing hormone or its analog, dopamine antagon, and selective estrogen receptor regulator. Its application method is also disclosed.

The invention discloses a wet feed for improving reproductive performance of parent fish of little yellow croakers and a feeding method, the wet feed mainly comprises the following components in parts by weight: 40-60 parts of yellow croaker cream, 40-90 parts of a nutrient supplement for the parent fish of the little yellow croakers and 0.1-0.3 part of fish oil, and the feeding method comprises the following steps: mixing the wet feed with the particle size of 0.3-0.4 cm and the length of 0.4-0.5 cm according to the amount of 1kg/1000 fishes; the parent fishes are fed twice a day in the morning and afternoon, so that the feed intake, the weight gain rate, the gonad index, the fertilized egg amount and the fertilization rate of the parent fishes are improved. The feed disclosed by the invention is stable in quality, meets the nutritional requirements of the parent fishes of the small yellow croakers, contributes to improving the feed intake, weight gain rate and growth performance of the parent fishes of the small yellow croakers, promotes gonad development and reproductive capacity of the parent fishes of the small yellow croakers and setting of feeding time and feeding times, conforms to the enzyme activity characteristics of digestive tract protease of the small yellow croakers, is beneficial to digestion and absorption, and meanwhile, the soft pellet feed is convenient to transport and store.