40results about How to "Improve hatchability" patented technology

The invention relates to the technical field of incubator accessories, in particular to an egg containing mechanism and an intelligent incubator with the egg containing mechanism, the egg containing mechanism comprises an incubation tray and further comprises a connecting sleeve and a turning-around assembly, the connecting sleeve is rotationally arranged on the outer side of a positioning column in a sleeving mode, and the outer side face of the connecting sleeve is of a polygonal structure; each outer side face of the connecting sleeve is movably connected with two transversely-arranged sliding plates, and the two sliding plates are each rotationally connected with an egg support arranged in the length direction of the corresponding sliding plate. The turning-around assembly is arranged between the sliding plate and the egg supports and used for exchanging the inner side and the outer side of the upper egg support and the outer side of the lower egg support. The two clamping plates are arranged on the egg support to fix the two ends of the eggs, the turning-around assembly is arranged at the bottom of the egg support, when the egg support rotates, the second gear ring in the cover body is matched, so that the egg support drives the eggs to change the positions of large heads and small heads, the two ends of the eggs can be intermittently and uniformly heated, and the hatching rate of the eggs is increased.

The invention provides a method for on-site rapid artificial insemination of wild sal-family large yellow croakers, and belongs to the technical field of aquatic animal breeding. According to the method, wild parent fishes are captured in the breeding season of the sal-family pseudosciaena crocea; selecting sexually mature male parent fishes on a capturing site, and collecting seminal fluid for later use; after manual semen collection is finished, female parent fishes with sexual maturity are selected, and fish eggs are collected; performing artificial insemination to obtain high-quality fertilized eggs; the artificial insemination comprises the following steps: adding seminal fluid into the roes, then adding natural seawater, stirring, and finally washing with the natural seawater. According to the method, key links of the whole artificial insemination process are comprehensively regulated and controlled, so that the purposes of obtaining high-quality fertilized eggs and carrying out artificial fry breeding by utilizing the parent fish of the wild sal ammoniac large yellow croaker are achieved.

The utility model provides a fairy shrimp temperature control hatching device which comprises a hatching box, a heating plate, a motor, a rotating shaft, blades and a pushing mechanism, the pushing mechanism comprises a sleeve, a piston, a reset spring, a stress block, a pushing rod, a transverse pipe, a vertical pipe and a jet head, and fairy shrimp eggs and hatching liquid can be poured into the hatching box. A proper temperature environment is provided under the action of a heating plate, meanwhile, a motor can drive blades to rotate through a rotating shaft, so that the fairy shrimp eggs are evenly distributed in hatching liquid, in addition, when the rotating shaft rotates, a push rod can make contact with a stress block, a piston is pushed by the stress block to move towards the interior of a sleeve, and when the piston moves, the stress block is pushed into the sleeve. Air in the sleeve can be pushed into the transverse pipe from the vertical pipe, the air spraying head on the transverse pipe can spray the air out, the content of dissolved oxygen in hatching liquid is increased, meanwhile, upward water flow is formed in the hatching liquid, the phenomenon that the eggs of the fairy years sink to the bottom is avoided, it is guaranteed that the eggs of the fairy years can receive proper heat, and the hatching rate is increased.

The invention relates to a special pond for medium and large octopus breeding and a using method, and belongs to the technical field of aquaculture facilities, the special pond comprises a culture pond body and a nest fixed on the wall of the culture pond, the nest is composed of a semi-embedded frame and an inner insertion nest, the inner insertion nest can be freely inserted into or pulled out of the frame, and the inner insertion nest can be inserted into or pulled out of the frame. A feeding opening is formed in the upper wall of the inner inserting nest, a drain outlet is formed in the lower wall of the inner inserting nest, and the nest is arranged below the breeding water level of the breeding pond body. The invention further provides a using method of the special pond, the special pond is easy and convenient to operate and manage, the production cost is greatly reduced, and the survival rate, the mating rate, the spawning rate and the hatching rate of parents are remarkably increased.

The present application relates to the field of animal embryo engineering technology, and provides a method for improving the development ability of bovine IVP embryos. In the production of bovine in vitro embryos, by adding PAPPA, ergothioneine and selenocysteine to the bovine oocyte in vitro maturation culture solution, early embryo culture solution, late embryo culture solution, freezing solution and thawing solution, the in vitro maturation performance of oocytes and the development performance and vitality of the subsequent obtained embryos can be effectively improved. Studies have shown that after adding the above additives, the maturation rate of oocytes, the cleavage rate, the blastocyst rate of embryos, and the freezing survival rate, the hatching rate and the ATP content of embryos after freezing preservation are significantly improved, which has important application value.

The application provides an artificial breeding method of Onychostoma wujiangense, and belongs to the technical field of aquatic animal breeding. The artificial breeding method of Onychostoma wujiangense comprises the steps of parent fish classification, parent fish cultivation, artificial parturition induction, natural insemination, artificial insemination, fertilized egg hatching, larva cultivation and juvenile fish cultivation. The parturition induction agent is reasonably matched, the parturition induction injection time is accurate, the parturition induction rate, the fertilization rate and the hatching rate are improved, and the parent fish damage is small. The application also clearly defines the feeding methods at different stages of seed cultivation, improves the survival rate of Onychostoma wujiangense seed cultivation stage, and lays a technical support for the artificial breeding of the endangered species Onychostoma wujiangense.

The invention relates to a grouper crossbreeding method. The method comprises the four steps of parent breeding, temperature-sensitive domestication, artificial spawning and insemination, incubation and fry breeding, specifically, cold water-based clear water stone spots and hot water-based brown spot stone spots are selected as parents, the clear water stone spots are used as female parents, the brown spot stone spots are used as male parents, and the middle water temperature is adapted through gradient temperature-sensitive domestication; stress-resistant feed containing hilsa herring egg source peptide and haematococcus pluvialis astaxanthin ester and a temperature-sensitive blender are matched, a reproductive care agent is supplemented to strengthen sperm and egg performance, and normative spawning induction, insemination and graded cultivation processes are adopted. According to the method, the problems of poor water temperature adaptation and low hatching rate of grouper hybrid sperms and eggs in different temperature areas are solved, the wide-temperature property of filial generations is improved, the method adapts to the water temperature of 18-28 DEG C, the hatching rate, the fry survival rate, the adult fish survival rate and the average weight of single fish are remarkably improved, and technical support is provided for industrial application.

The invention discloses a folic acid nanoemulsion capable of increasing the egg laying rate of protaetia brevitarsis and application of the folic acid nanoemulsion. The folic acid nanoemulsion comprises the following components in percentage by mass: 0.003%-0.005% of folic acid, 0.02%-0.1% of sodium bicarbonate, 3%-4% of ultrapure water, 16%-19% of a surfactant, 6%-9% of a cosurfactant and 67.895%-74.977% of an oil phase. The method has the remarkable effects that the folic acid content ranges from 0.02 mg / kg to 0.05 mg / kg in a feed mixing and administration mode, the single female egg laying rate of the protaetia brevitarsis can be increased by 5.72% to 25.29% when the protaetia brevitarsis is fed to female protaetia brevitarsis, and nutrition preparation support is provided for increasing the egg laying rate in the large-scale breeding process of the protaetia brevitarsis.

The present invention provides a method for debonding fertilized eggs of marine fish, comprising the following steps: S1. immersion and disinfection of fertilized eggs; S2. preparation of debonding liquid; S3. debonding of fertilized eggs; S4. separation and cleaning of fertilized eggs. Before debonding fertilized eggs of marine fish, the present invention first uses a composite Chinese herbal medicine preparation to soak the fertilized eggs of marine fish to kill bacteria and fungi in the fertilized eggs of marine fish. Avoid infection of fertilized eggs of marine fish during the debonding process, thereby improving the subsequent hatching rate of fertilized eggs of marine fish. The present invention uses a debonding agent composed of a specific proportion of disodium hydrogen phosphate, water, a composite enzyme solution, and cystine to debond fertilized eggs of marine fish. The debonding agent of the present invention is mild and non-irritating, and can effectively avoid damage to fertilized eggs of marine fish caused by mechanical vibration and friction in traditional debonding methods.

This utility model discloses a black soldier fly egg collection device, comprising a frame, wherein an attraction lamp or attraction box is provided in the frame, and an attraction agent is provided in the attraction box. Multiple collection troughs are arranged sequentially from top to bottom within the frame, with a spacing of 8mm to 15mm between adjacent collection troughs. Each collection trough consists of upper and lower collection strips, with a spacing of 2mm to 4mm between the upper and lower collection strips. The sequentially arranged collection strips facilitate the female black soldier fly to climb on both sides and lay eggs in both directions. The 8mm to 15mm spacing between adjacent collection troughs ensures that the female black soldier fly lays eggs only within the space of the collection trough, thereby improving the egg hatching rate.

The invention discloses a disinfectant for in-vitro incubation of procambarus clarkii embryos and a preparation method and application thereof. The disinfectant comprises at least one of a first disinfectant, a second disinfectant and a third disinfectant, the first disinfectant comprises sodium chloride, trehalose, sodium dodecyl benzene sulfonate and water; the second disinfectant comprises at least one of an essential oil mixed solution, a six-herb mixed solution and a six-flower mixed solution; the essential oil mixed liquid comprises thyme essential oil, sage essential oil, blue eucalyptus essential oil, mint essential oil and water; the six-herb mixed solution comprises felwort, houttuynia cordata, caryopteris incana, humifuse euphorbia herb, liquorice, lavender and an ethanol solution; the mixed liquor of the six flowers comprises honeysuckle flowers, calendula flowers, flos florae, safflower, lilac flowers, rose flowers and an ethanol solution; the third disinfectant is prepared from polysorbate-80, astaxanthin, glycine and water. The disinfectant comprises the first disinfectant, the second disinfectant and the third disinfectant which are mutually promoted and have synergistic interaction, and the obtained disinfectant is non-toxic, harmless, green, environment-friendly, good in disinfection effect, good in embryo protection effect, good in stability, convenient to use, capable of replacing an existing formaldehyde disinfectant, high in hatching rate and good in emergence rate.

The present invention discloses a method for cultivating greater amberjack seedlings in an indoor cement pool, comprising the following steps: fertilized egg hatching, environmental regulation, bait and feeding methods, net-pulling training, and fish screening and pool division. The method adopts cement pool cultivation, and through water quality regulation, water flow environment regulation, and light environment regulation, selects nutritious oyster fertilized eggs instead of rotifers as the starter bait for fry, and through step-by-step net-pulling training, and cultivating seedlings of different specifications in different pools, the hatching rate of greater amberjack fertilized eggs and the survival rate of newly hatched fry are improved. The present invention also provides the use of the above method in improving the hatching rate of greater amberjack fertilized eggs, improving the weight, total length, survival rate, and yield rate of greater amberjack fry, improving the expression of genes related to muscle growth and development of greater amberjack, improving the microbial species coverage, richness, and diversity of greater amberjack intestinal flora, regulating the composition structure of greater amberjack intestinal microbial colonies, and increasing the proportion of beneficial bacteria in the flora or improving intestinal health.

The utility model relates to the technical field of freshwater fish culture, and particularly discloses a fish hatching device which comprises a base, a hatching box is installed on the base, and a water collecting tank is arranged on the periphery of the hatching box. The water spraying assembly is arranged at the top of the incubator and comprises a supporting frame connected with the incubator, and the driving motor is installed on the surface of the supporting frame; the water spraying assembly comprises a water spraying pipe and a supporting seat, the water spraying pipe is fixedly connected with an output shaft of the driving motor, a water inlet end is arranged on the surface of the water spraying pipe, one end of the supporting seat is rotationally connected with the water inlet end, and the other end of the supporting seat is fixedly connected with an external water pipe. The conical part is arranged, so that sewage can be conveniently discharged when the interior of the barrel is cleaned before roe hatching, fries can be conveniently put after roe hatching, and when a water source in the hatching box is continuously increased, the water source overflows from the top of the cylinder part, so that the flowability of the water source in the hatching box is kept, and the roe hatching rate is effectively increased.

The invention provides a low-temperature-high-temperature stimulation membrane rupture and double-high water temperature tolerance threshold experiment method for fertilized eggs of schizothorax fishes in a strong daily temperature difference water area. The method comprises the following steps: step 1, determining daily extremum and amplitude variation of hatching water temperature of the fertilized eggs of natural reproduction of the schizothorax fishes; 2, daily variable-amplitude incubation water temperature is achieved; step 3, membrane rupture key water temperature control; 4, performing large-scale membrane rupture through low-temperature-high-temperature stimulation; and step 5, determining a double-high water temperature tolerance threshold. According to the method, by determining the daily extreme value and variable amplitude of the hatching water temperature of the naturally-bred fertilized eggs, the hatching water temperature experiments with variable amplitude in different days are designed for hatching the fertilized eggs, and the natural hatching environment with the large daily water temperature difference of the Qinghai-Tibet Plateau river under climate changes is simulated; through an indoor fertilized egg water temperature gradient experiment, a low-temperature-high-temperature stimulation membrane rupture mechanism, a double-high water temperature tolerance range and a threshold value of the key fish schizopygi nojirioides from the Yangtze River source are found, and scientific support is provided for protection and repair of fish resources from the Yangtze River source under the background of subsequent climate warming.

The invention provides a method for artificial insemination and fertilized egg incubation of wild schizothorax parvus, which comprises the following steps: on the basis of ascertaining the biological characteristics of the wild schizothorax parvus through tracking and monitoring for many years, capturing sexually mature male and female parent fishes, carrying out artificial insemination after sperm and egg treatment, obtaining fertilized eggs, and carrying out micro-running water incubation, so that the fertilization rate reaches 85%, and the incubation rate reaches 70%. The artificial insemination of the rare and endangered indigenous fish Schizothorax parvum in the Luagu Lake and the trial culture of the first filial generation of fish fries are successfully carried out for the first time in China, the blank in the field is filled, the artificial domestication, breeding and culture of the Schizothorax parvum are completely feasible and are preliminarily successful, and the specific fish population of the Luagu Lake is recovered, developed and cultured, so that the economic benefits of the Luagu Lake and the Schizothorax parvum are improved. High-quality offspring seeds are provided, and the method has important significance on lake enhancement and release and improvement of fishery economic benefits.

The invention discloses a tussah egg incubator. The tussah egg incubator comprises an incubator body. A ventilation opening is formed in the upper portion of the incubator and provided with an electric opening and closing exhaust window and an exhaust fan, a compressor, a heater and a humidifier are arranged at the bottom of the incubator, a uniform-temperature fan is embedded in the inner wall of one side of the incubator, a water bucket is arranged outside the incubator and communicated with the water tank through a connecting pipe, and a buoyancy switch is arranged at the water outlet end of the connecting pipe. The incubator is provided with a control processor with an operation panel; and a temperature sensor and a humidity sensor are arranged in the incubator. According to the tussah incubator, acquired data are processed through the control processor, corresponding equipment is started when temperature adjustment or humidity adjustment is needed, and timing ventilation is carried out, so that the required temperature, humidity and ventilation quantity are always kept in an incubation storehouse, the incubation rate of young silkworms is increased, and the incubation efficiency of the young silkworms is improved. The hatched young silkworms are robust in body type, active and rapid in action and enhanced in autoimmunity, and the survival rate of the strong silkworms is increased.

The utility model discloses a kind of based on double-acting cylinder's ricefield eel fertilized egg hatching device, it is related to aquaculture equipment technical field, by hatching frame, lifting frame, hatching net, air compressor, PLC controller, air pipe, signal line, two-position five-way solenoid valve composition, lifting frame is located on hatching frame, hatching net is connected in the lower portion of lifting frame and is in hatching barrel, air pipe is connected two-position five-way solenoid valve after from air compressor, then connect double-acting cylinder, signal line connects PLC controller and two-position five-way solenoid valve and then controls movement action.The device can be automated, realize fertilized egg to carry out sustained, uniform lifting, effectively promote dissolved oxygen, prevent water mould, to improve hatching rate.

The utility model relates to the technical field of tilapia hatching, in particular to a reliable tilapia breeding and hatching device which comprises a hatching box, a turning device, a cleaning device and a moving device, a supporting table is installed on the bottom wall of the hatching box, and supporting legs are installed at the four corners of the bottom end of the supporting table. The turning device comprises a first motor, a driving rotating shaft, a driven rotating shaft, a conveying belt and a turning net, the conveying belt is obliquely arranged in the incubator, and the conveying belt drives the turning net to circularly lift and put down water to form continuous movement, so that the hatching environment of roes is simulated; meanwhile, a good simulation effect is achieved for a large incubator, the water flow movement efficiency is improved, impurities floating in the incubator can be cleaned through a cleaning device, the incubator can be moved through a moving device, sufficient oxygen and nutrition can be provided for roes through water flow movement, even heating of the roes can be promoted, and the roes can be heated more evenly. The hatching speed is accelerated.

A method for promoting ovarian development of pelteobagrus vachelli belongs to the technical field of fish culture, and is characterized in that in the pelteobagrus vachelli culture process, a functional additive is fed at the ovarian development preparation stage and the ovarian development strengthening stage, and the functional additive is prepared by mixing epigallocatechin gallate and compound unsaturated fatty acid, adding the compound unsaturated fatty acid into the mixture, and stirring to obtain the functional additive for promoting the ovarian development of the pelteobagrus vachelli. Beta-cyclodextrin is firstly adopted for inner layer embedding, then chitosan is adopted for outer layer coating, the microcapsule is prepared, and the composite unsaturated fatty acid is composed of monounsaturated fatty acid and polyunsaturated fatty acid according to the volume ratio of (0.8-1): (1-1.2). EGCG and compound unsaturated fatty acid are compounded and embedded to prepare microcapsules, the microcapsules are added into feed for feeding, ovarian development of pelteobagrus vachelli is effectively promoted, the number of oocytes of pelteobagrus vachelli is increased, meanwhile, the cell proportion of III-stage oocytes is increased, the reproductive capacity of pelteobagrus vachelli is effectively improved, the survival rate of pelteobagrus vachelli is increased, and the survival rate of pelteobagrus vachelli is increased. The egg laying amount, the fertilization rate and the hatching rate are improved.

The invention discloses a duck egg breeding internal damage detection and identification method, system and device and a storage medium, and relates to the technical field of duck egg internal detection, and the method comprises the following steps: obtaining a perspective view of a to-be-detected duck egg during breeding, and marking the perspective view as a detected duck egg perspective view; judging whether the duck egg to be detected is a normal duck egg or a damaged duck egg based on the normal duck egg gray threshold value and the detection gray-scale map; acquiring a smaller error threshold and a larger error threshold based on the main number frequency ratio, and judging whether the detected duck eggs are unfertilized duck eggs or not based on the detected main number ratio, the smaller error threshold and the larger error threshold; the method is used for solving the problem that the duck egg hatching rate is low due to the fact that only duck egg freshness is judged and duck egg fertilization is not judged in the prior art.

The invention discloses a slug feed and a wild-imitating slug breeding method, and belongs to the technical field of animal wild-imitating breeding. The invention provides a slug feed. The slug feed comprises the following raw materials: fruit and vegetable wastes, rubber juice and pumpkins, the mass ratio of the fruit and vegetable wastes to the rubber juice to the pumpkins is (5-20): (1-5): (1-5). The slug feed disclosed by the invention is balanced in nutritional ingredients, can meet nutritional requirements of slugs in different growth stages, promotes growth and development of the slugs, remarkably improves the content of slug elements, and improves the commodity yield and quality of the slugs. The invention further provides a wild-imitating slug breeding method, annual production of vegetables and wild-imitating slug breeding are combined, and the method has the advantages of being low in breeding cost, high in survival rate, stable in adult effective component content and the like. The artificial breeding problems of unstable slug product yield and quality, high breeding cost, high over-summering and over-wintering death rates of larvae and adults and the like can be effectively solved, and technical reference can be provided for sustainable development and utilization of slugs.

The utility model discloses an intelligent hatching tray for silkworm breeding, relates to the technical field of hatching trays, and aims to solve the problems that the conditions of local high temperature and non-uniform temperature distribution are easily caused, the silkworm egg hatching effect is poor and the energy consumption is high due to the fact that an existing silkworm egg hatching tray adopts an external space heating mode. A heating disc is fixedly connected to the inner side of the hatching disc body, the interior of the heating disc is of a hollow structure, heat conduction oil is contained in the heating disc, a mounting base is fixedly connected to the inner side of the lower end of the hatching disc body, and a plurality of mounting holes are formed in the outer surface of the mounting base. A far infrared heat source is fixedly mounted in each mounting hole, the far infrared heat sources are located under the heating disc, and the mounting holes are formed in the middle of the lower surface of the heating disc. The effects that each hatching tray can be independently and uniformly heated, the energy consumption is low, and the silkworm egg hatching rate is high are achieved.

The invention discloses a method for inhibiting development of silkworm eggs, and belongs to the technical field of agricultural biology. Aiming at the technical problems that castor silkworms have multiple generations in one year due to the non-diapause characteristic, the feeding cost is high and the breeding risk is large, the invention provides a technical scheme for delaying incubation by accurately controlling low-temperature treatment opportunity and parameters. The method is characterized in that castor silkworms lay eggs at the temperature of 25-26 DEG C, the castor silkworms are cultivated at the temperature of 25-26 DEG C for 15-20 h after egg laying, then cooling treatment is conducted, silkworm eggs are placed in a low-temperature environment of 5-8 DEG C to be refrigerated for 5-6 d, and finally the silkworm eggs are transferred to a standard hatching environment with the temperature of 25-28 DEG C and the relative humidity of 75%-85% to recover development till hatching. The method can effectively prolong the egg period of ricinus communis, reduce annual breeding generations, facilitate adjustment of feeding work time arrangement, remarkably reduce the breeding cost and risk, and meanwhile keep good hatching rate and vitality.

The utility model discloses a portable intelligent turtle and soft-shelled turtle egg laying room, including external box, internal sand layer, top humidifying subassembly and bottom collecting subassembly, external box is cuboid structure and is equipped with mobile wheel at bottom, realizes position flexible adjustment, the humidity sensor is built -in in internal sand layer, is used for real -time monitoring humidity, top humidifying subassembly contains the water mist sprayer of electric connection with humidity sensor, realizes intelligent humidification, bottom collecting subassembly is equipped with the automatic collecting net of liftable, is used for screening sand and automatically collecting turtle and soft-shelled turtle egg, the utility model solves the traditional egg laying place position fixed, humidity control is difficult, turtle and soft-shelled turtle egg collection cumbersome problem, has the advantages such as strong mobility, humidity control intelligence, turtle and soft-shelled turtle egg collection automation, effectively improves turtle and soft-shelled turtle egg laying management efficiency and turtle and soft-shelled turtle egg quality.

The present invention provides an embryo egg microecological preparation hatching auxiliary device, which relates to the embryo egg hatching technical field, including an incubator, the incubator is provided with an egg turning mechanism for facilitating the hatching of embryo eggs, the incubator is provided with a spraying mechanism for spraying auxiliary microorganisms, the egg turning mechanism includes a motor, an egg turning roller and an adjustment plate, the spraying mechanism includes a liquid storage tank, the liquid storage tank is fixedly mounted on the upper end of the incubator, the motor is fixedly mounted on the side end of the incubator, and the two side ends of the inner side wall of the incubator are penetrated and rotatably installed with a second round rod. The device is provided with an adjustable egg turning roller, and different types of eggs and different sizes of eggs in the same type have different diameters and heights. The egg turning roller with adjustable gap can adapt to eggs of various sizes, so that the versatility of the incubation equipment is greatly improved, and there is no need to prepare different incubation equipment for different eggs, thereby improving the adaptability of the device when used.

This invention relates to the field of aquaculture equipment technology, and particularly to a dual-circulation breeding tank that prevents fish eggs from clogging and has a self-cleaning function. The tank includes: a tank body, circulation pipes, and a circulation pump; the circulation pipes are connected to the circulation pump and are connected to the upper and lower ends of the tank body; two sets of circulation pipes are installed on the tank body, forming a dual-circulation design from bottom to top and from top to bottom; a filter box is fixedly connected inside the tank body; filter cotton is placed inside the filter box; an egg-guiding screen is installed inside the tank body; a collecting funnel is located below the egg-guiding screen and is used to collect fish eggs; this invention, by setting two sets of circulation pipes and a circulation pump on the tank body, forms a dual-circulation system consisting of a rearing cycle and a hatching cycle, which not only ensures the water quality of the broodstock in the upper rearing area but also provides a uniform upward flow of water to the lower hatching bed, creating a stable high-dissolved oxygen microenvironment for fish egg development and improving the hatching rate.

The application provides alligator feed, an alligator feeding method and application, and relates to the technical field of alligator breeding. The alligator feed with high meat yield rate comprises fish, fish meal, vitamins, calcium powder, medicinal materials and probiotics; the fish meal comprises fish, shrimps and land animal meat; and the medicinal materials comprise at least one of malt, houttuynia cordata and hawthorn. Through the alligator feeding method, the alligator feed is fed, the meat yield rate, the egg production rate of alligators, and the fertilization rate and the hatching rate of alligator eggs are improved, the alligator feeding system has high economic benefits, and the preparation method of the alligator feed is simple and efficient.

The present invention relates to a composition for improving fish reproduction performance and a preparation method and application thereof, and belongs to the technical field of aquaculture. The composition for improving fish reproduction performance of the present invention includes the following components in weight parts per 1000 parts by weight of the composition: 25-150 parts of N-carbamylglutamic acid, 100-400 parts of motherwort, 50-300 parts of composite amino acids, 0.5-5 parts of composite vitamins, 10-100 parts of licorice extract and 10-100 parts of astragalus polysaccharides. The present invention selects N-carbamylglutamic acid, motherwort, composite amino acids, composite vitamins, licorice extract and astragalus polysaccharides to be a composition for improving fish reproduction performance, which has the advantages of improving fish reproduction performance, advancing its spawning time, increasing the number of eggs laid and the number of fertilized eggs and the hatching rate of fertilized eggs, and at the same time will not cause the advantage of increasing the deformity rate of fertilized eggs, and can significantly improve fish reproduction performance.

This utility model discloses a multi-layer chick incubator that is easy to clean, including a box body and sliding guide rails disposed on both sides of the box body, and a pull-out assembly slidably disposed within the sliding guide rails. Multiple sets of sliding guide rails and pull-out assemblies are correspondingly arranged along the height direction. It also includes a heating assembly and a humidifying assembly. The pull-out assembly includes a support compartment with two ends slidably disposed on the two sliding guide rails via sliders. The support compartment has a storage cavity, and a collection drawer slides within the storage cavity. The collection drawer is a cuboid structure with an open top, and its left and right edges are slidably connected to the slide rails of the storage cavity. The collection drawer passes through the storage cavity and extends to the outside. A support recess is provided at the top of the support compartment, and positioning posts are provided at the four corners of the support recess. It also includes an incubation rack. This utility model relates to the technical field of poultry incubation equipment, specifically providing a multi-layer chick incubator that is easy to clean.

The utility model discloses a salmon and trout roe hatching device relates to hatching device technical field, including outer box and hatching box, the inside of outer box is equipped with hatching box through rotating shaft, the inside of hatching box is equipped with fixed column, the top of outer box is equipped with connecting strip, the top of fixed column is equipped with transmission shaft, and the transmission shaft is equipped with transmission shaft. A dispersion fan is mounted on the lower surface of the connecting strip; a water tank is mounted on the left side of the outer box; an overflow pipe is mounted above the left side of the water tank; placing plates are installed on the left side and the right side of the fixing column through hinge bases correspondingly, limiting plates are installed on the left side and the right side of the fixing column correspondingly, and limiting bolts are installed on the limiting plates. According to the salmon and trout roe hatching device, the dispersing fan blows air to the placing plate, so that salmon and trout roes on the placing plate are dispersed preliminarily, sufficient space is provided for the roes, mutual extrusion is reduced, material exchange in a hatching environment is facilitated, the breathing efficiency of the roes is improved, and healthy development of the roes is promoted.