95 results about "Brine shrimp" patented technology

The invention relates to a quick-frozen fried shrimp cake food and a manufacturing method thereof, which is characterized in that 60-80 percent of shrimp congee made from fresh shelled shrimps that are treated at low temperature is used as raw material. Then, 5-10 percent of fish congee, 1-5 percent of soybean protein, 5-10 percent of corn starch, 0.1-0.5 percent of quality improver, 0.2-0.3 percent of water maintaining agent, 2-8 percent of condiment and 5-10 percent of water are added to be kneaded at low temperature uniformly to obtain cake core material. The external surface of a cake core which is molded by the cake core material is covered with a layer of bread flour to form a shrimp cake. After being gelatinized, the shrimp cake is fried until the external surface is golden yellow. After cooled, the fried shrimp cake is quickly frozen to obtain the quick-frozen fried shrimp cake food. The food comprises 70-90 percent of the cake core and 10-30 percent of the bread flour by weight percentage. The food is provided with golden yellow outer surface, crisp outside and tender inside. The freshness of brine shrimp is maintained, and the nutrition components of other raw materials are synthesized. The cake core of the food has the advantages of good elasticity, perfect taste and convenience. The manufacturing method of the shrimp cake food has the advantages of reasonable process, feasible operation and high manufacturing efficiency and suitability for industrialized production.

The invention discloses a river crab cultivation method. The river crab cultivation method comprises preparing a cultivation site; irrigating water 15 days before crab seeds are put into the cultivation site and enabling the height of a water surface to keep between 10 and 12 cm; sterilizing the cultivation site; pouring water to enable the height of the water amount to be increased to 25 to 30 cm 8 to 10 days before crab seed putting, sterilizing the cultivation site through quick lime emulsion and oxygenating a cultivation pond through an oxygenating machine 24 hours after the sterilization; planting alligator weeds on the water surface; immersing the crab seeds through salt solutions with the concentration to be in 3.5 to 4.5 % for 8 to 10 minutes before the crab seeds are put into the cultivation pond and feeding fodder after the crab seeds are put into the cultivation pond; performing daily feeding and management of the crab seeds in the growing period, namely feeding bean curd, small trash fish cream and adult brine shrimps at the initial stage after the crab seeds are put into the cultivation pond, feeding bean cakes and fish cream after the crab seeds grown into baby crabs and feeding mixed type fodder at the intensive culturing stage of the baby crabs. The river crab cultivation method has the advantages of avoiding seed loss, improving the survival rate of the river crabs, reducing cultivation costs and improving economic benefits due to the fact that the crabs which are cultivated in green houses are fed in combination with reasonably matched fodder.

The mass jade perch fry rearing process includes the following steps: 1. reinforced parent perch incubation after raising in a fish pond, in 1-3 months before laying eggs and through regular flow water irritation; 2. laying egg and incubating by means of setting female perch and male perch in the ratio of 1-1.5 to 1 into the egg laying pond, keeping flow water irritation, injecting echolica for female perch to lay egg, gathering fertilized eggs and incubating in a cement pond with slow flowing water, air inflation, certain water salinity and controlled water temperature; and 3. rearing perch fry in an incubating pond with slow flowing water, air inflation, certain water salinity and controlled water temperature through feeding brine shrimp larva. The said process has high jade perch fry survival rate.

The invention discloses a turbot fry starter feed formula comprising the composition and content by the mass percentage: 20-35% of white fish meal, 10-20% of a chicken powder, 3-6% of an egg powder, 3-6% of beer yeast, 10-20% of wet brine shrimp, 5-10% of shrimp flesh, 15-20% of flour, 1-3% of betaine, 1-5% of fish oil, 1-3% of phospholipid, 1-2% of a vitamin mixture, 2-4% of a mineral element mixture, and 1-5% of a microorganism preparation. The turbot fry starter feed formula has the advantages of high raw material digestion and absorption utilization rate, strong feeding attraction, safety and reliability, stable quality, health, comprehensive nutrition, and convenience in use, can promote the fry metamorphosis development, improves growth performance, and improves the disease-resistant and anti-stress abilities of fry, increases the survival rate, and is suitable for large-scale cultivation of the turbot fry.

The invention provides a brine shrimp egg shelling method for decreasing the hatching rate. The method includes the steps of 1) hydrating brine shrimp eggs for 1-3 hours, wherein the salinity of hydrating water is 0-3%; 2) after the brine shrimp eggs absorb water sufficiently, transferring the brine shrimp eggs to shelling liquid and stirring and aerating continuously; 3) enabling the shelling time of the brine shrimp eggs in the shelling liquid to be 5-15 minutes, wherein shelling is complete when the color of the brine shrimp eggs is changed from brown to grey white and to tangerine finally; 4) after shelling is completed, collecting shelled eggs by a 200-mesh screen net and washing the shelled eggs along the edge of a net bag by a great quantity of fresh water, so that damage to the eggs by direct washing is prevented; 5) after the shelled eggs are washed by the fresh water, the washed shelled eggs are washed by sodium thiosulfate solution, or immersing the washed shelled eggs into the sodium thiosulfate solution for dechlorination for 1-2 minutes prior to washing the dechlorinated shelled eggs by the fresh water, so that the shelled brine shrimp eggs are obtained. The hatching rate of the shelled brine shrimp eggs obtained by the method is increased substantially and is up to 86%.

The invention relates to a water treatment unit for a zebrafish culture system using brine shrimp for feeding. The water treatment unit comprises a water purification tank, a backflow water diverter and a sand filter. The water purification tank is divided into a filter chamber, a thermo-sterilization chamber and a feeding chamber by partitions. A submersible pump in the feeding chamber supplies feed to all culture units through pipelines. The backflow water diverter comprises a U-shaped pipe. A backflow pipe is connected to the bottom of the U-shaped pipe and leads to the feeding chamber of the water purification tank. One end of the U-shaped pipe is communicated with an overflow master pipe, and the other end of the U-shaped pipe is communicated with the filter chamber. The sand filter comprises a sand filtering pipe which is provided with a sand filtering tank and a self-priming pump. One end of the sand filtering pipe is communicated with the feeding chamber, and the other end of the sand filtering pipe is communicated with the filter chamber. The water treatment unit is simple in structure and simple to operate, and the feed can be supplied into the culture units without stopping water circulation. Therefore, heavy manual feeding of brine shrimp into the culture units one by one is avoided, and feeding amount of each culture unit can be controlled to prevent bait loss and increase utilization rate.

The invention relates to a method for efficiently breeding blue crabs. The method comprises the following steps: performing intermediate breeding on II-stage baby blue crabs in an outdoor cement pit greenhouse; disinfecting the water for breeding through an ultraviolet lamp and mounting an oxygenating device in a breeding pond; feeding big disinfected brine shrimps at regular time; exchanging 15% water per day; after the II-stage baby blue crabs grow and become V-stage baby blue crabs, putting juvenile crabs into the breeding pond at a sex ratio of female to male being 3:1; after ending mating, fishing out the male crabs; continuously breeding the female crabs; and when the water temperature is lower than 10 DEG C, putting the female crabs into the outdoor cement pit greenhouse for temporarily breeding and putting into the market before and after the Spring Festival, thereby greatly increasing the breeding yield and economic benefit. According to the method provided by the invention, the juvenile crabs are prevented from being killed by enemies and severe environment; the use ratio of baits is increased and the happening of diseases is reduced; the breeding yield of the blue crabs is increased by 26.99% and the breeding benefit is increased by 2.39 times, by adopting the method provided by the invention; the method can be widely applied to the breeding for the blue crabs; the energy conservation and the environment protection are realized; and the economic benefit and the social benefit are obvious.

The invention relates to a preparation method and a phosphorus removal method of a zirconium oxide-loading phosphorus removal biological composite material. The preparation method comprises: dissolving zirconium oxychloride in dehydrated alcohol, adding brine shrimp egg shell, carrying out ultrasonic and magnetic stirring at a room temperature to make the zirconium oxychloride gradually diffuse to the inner surface of egg shell pore channels, placing into a water bath pot to evaporate the ethanol, taking the egg shell out, adding the zirconium oxychloride-loading egg shell to a NaOH solution, carrying out mechanical stirring at a room temperature, carrying out in situ precipitation to produce zirconium hydroxide in the egg shell pore channels, filtering, washing the shell egg complex a plurality of times with distilled water until achieving the neutral state, and drying in a drying oven to prepare the zirconium oxide-loading brine shrimp egg shell biological composite material. The phosphorus removal method comprises that: phosphate-containing sewage passes through a cylindrical fixed bed absorption device filled with the zirconium oxide-loading brine shrimp egg shell biological composite material in a forward flow manner so as to efficiently purify the phosphate-containing sewage; the composite material after absorption is subjected to desorption by using a NaOH and NaCl mixing solution, and the desorbed composite material is subjected to water washing by using deionized water to achieve the neutral state so as to be recycled.

The invention provides a process for producing brine shrimp eggs. The production process comprises the steps of soaking for separation, freezing, thawing, culturing, drying by a drying device, screening, cleaning shells by a skin sucking device, packaging in vacuum, and the like. The process for producing the brine shrimp eggs overcomes the defects of the traditional production process, has less impurity content, high purity and high and even incubation rate of the brine shrimp eggs, high processing quality as well as reasonable structure and easy operation of the adopted processing device, is beneficial to improving the processing quality and can meet the high standard requirements of export, and the like.

Metal binding proteins, associated compositions and methods for their production and use are disclosed. The metal binding proteins include have amino acid sequences analogous to at least one metal binding protein, and conservative amino acid substitutions thereof from a brine shrimp (Artemia). Also provided are the associated nucleic acid sequences encoding metal binding proteins.

The invention provides bait for culturing large brine shrimps and a culturing method thereof. The bait comprises, by weight, 2-4 parts of rice bran, 1-3 parts of wheat bran and 0.5-1.5 parts of activity beer yeast. Agricultural and sideline products are fermented to enable substances which are not assimilated easily by the brine shrimps originally to be changed into substances easy to assimilate, and the bait utilization rate is increased; after being reasonably compounded, the bait can provide more comprehensive nutrition needed by growth of brine shrimp individuals; the beer yeast serves as a single-cell nutrient substance, and provides nutrition for the growth of the brine shrimp individuals by itself; factors such as temperature and salinity are monitored and regulated rigorously, and therefore the brine shrimps can grow easily and normally.

Metal binding proteins, associated compositions and methods for their production and use are disclosed. The metal binding proteins include have amino acid sequences analogous to at least one metal binding protein, and conservative amino acid substitutions thereof from a brine shrimp (Artemia). Also provided are the associated nucleic acid sequences encoding metal binding proteins.

The present invention relates to a seafood soy sauce and a production method thereof. The soy sauce is prepared through the following steps that: defatted brine shrimps are added to a koji preparation raw material for soy sauce brewing, and the soy sauce is prepared according to soy sauce fermentation steps. For good applications of the prepared soy sauce, after the defatted brine shrimps are crushed, protease degradation is performed. The product of the present invention has characteristics of a reddish brown color, bright and shiny property, unique delicious fragrance of shrimp soy sauce, no decomposition odor, unique delicious taste of seafood soy sauce, moderate salt and sweet taste, good palatability, clear and transparent property, no suspended solid and no floc.

The present invention relates to a processing method of refined dried Brine shrimp Eggs. Said method includes the following steps: using 180-200 % sodium chloride aqueous solution and fresh water to separate and remove impurities at twice, then using 0.8% calcium hypochlorite solution as rinse solution to make rinsing, at the same time having the sterilizing action, and drying the Brine Shrimp Eggs to make its water content be 5-15%. Said invention has active separation procedure, uses air blast process to separate out dead eggs, then uses 5800-6200 LUX UV-ray lamp to make sterilization and disinfection, its Brine Shrimp Eggs hatching rate is 92-94%, the Brine Shrimp natality is 1:3.1-3.2, and its Brine Shrimp protein content is 52-54%.

The present invention discloses a method for preparing low-allergen brine shrimp by combination of high pressure and an enzyme method. A purpose of the present invention is to obtain complete low-allergen brine shrimp or non-allergen brine shrimp without destruction of the whole structure of the shrimp, and provide the low-allergen brine shrimp for shrimp allergic people. The method comprises: removing head, tail, shell and gut from the shrimp; removing a thin film on the surface of the shrimp; carrying out a hole pricking treatment by a needle; placing the pricked shrimp in salt water, wherein the mass percentage concentration of the salt water is 1%; adding papain to the salt water; holding pressure for 55 minutes at a temperature of 40 DEG C and the pressure of 450 MPa to obtain the low-allergen or non-allergen whole shrimp. According to the method of the present invention, the high pressure technology and the enzyme method are combined, such that the proteins in the shrimp are moderately degenerated, are diffused to the solution so as to contribute to the effects of the proteases; with the pressure effect, the proteases in the solution can be diffused to the internal of the shrimp, and directly provide the effects for the allergen proteins coated in the shrimp, such that the allergen proteins inside the shrimp are hydrolyzed so as to realize the degradation of the whole shrimp allergen proteins.

The invention relates to a bait feeding method for farmed hippocampus erectus. During the farming period of the young hippocampus erectus, bait feeding is performed according to the following steps that before the body height of the young hippocampus erectus reaches 6.5 cm, copepods are fed to the young hippocampus erectus, wherein the feeding density is 15-20 pieces per milliliter; after the body height of the young hippocampus erectus reaches 6.5 cm, the copepods continue being fed to the young hippocampus erectus, wherein the feeding density is 15-20 pieces per milliliter; adult brine shrimps are fed to the young hippocampus erectus in an auxiliary mode, and the daily feeding amount accounts for 10 percent -12 percent of the weight of the young hippocampus erectus. According to the growth of the young hippocampus erectus, bait of different specifications is fed, and the two kinds of bait with different specifications and different nutritive values are mixed together for feeding; in this way, the feeding efficiency and feeding quality of the young hippocampus erectus can be guaranteed, and therefore cost of bait for the young hippocampus erectus during the stage of 6.5 cm-9.5 cm of the body length of the young hippocampus erectus is lowered by 50 percent; besides, maturing time can be shortened by about 9 days, so that energy consumption and labor cost are lowered, and the system utilization rate is increased. Accordingly, the bait feeding method has good application prospects.

The method of incubating brine shrimp cyst to produce free swimming nauplius brine shrimp larva is to setting brine shrimp cyst and the additive in the weight ratio of 100 to 0.5-4 simultaneously into incubating culture medium. The additive is organic benzene containing one or several o-hydroxy radicals, such as pyrogallic acid, methyl pyrogallate, tannic acid, tanning extract, ea polyphenol, etc. The additive can damage the diapause mechanism of brine shrimp cyst to raise the brine shrimp cyst incubating within 24 hr to 90 %, and has flocculating effect to separate nauplius brine shrimp larva easily from un-incubated brine shrimp cyst. The present invention expands the application range of incubating culture medium and is especially suitable for incubating treatment of brine shrimp cyst the inland brine lake produces.

The invention relates to a killifish culture method. The method includes the following steps: culture water, the pH of which is 6.5 to 8.0 and the oxygen content of which is 4mg / L to 8mg / L, is adopted to incubate spawns under 24 DEG C to 30 DEG C for 4 to 12 hours, incubated larvae are fed with brine shrimp larvae after 10 to 15 hours, water is changed every three days, and the amount of changed water is 1 / 10 to 1 / 5 each time; after 10 to 20 days, the larvae are grown into adult fishes, the adult fishes are transferred into a culture tank for raising and fed with fairy shrimps, water is changed every two days, and the amount of changed water is 1 / 8 to 1 / 4 each time. The culture method for culturing killifishes is easy to operate, and moreover, both the incubation rate and the survival rate of the killifishes are high.

The invention discloses high-yield shrimp feed with a function of effectively improving immunity and a preparation method of the high-yield shrimp feed. The high-yield shrimp feed is prepared from components in parts by weight as follows: 30-50 parts of fish meal, 5-15 parts of shrimp meal, 0.2-0.5 parts of sodium chloride, 5-15 parts of fermented soybean meal, 12-25 parts of soybean meal, 18-22 parts of flour, 3-5 parts of brine shrimp eggs, 0.5-1.5 parts of selenium yeast, 0.3-1 part of beer yeast, 3-5 parts of corn starch, 3-6 parts of kelp powder, 1-3 parts of fish oil, 1-3 parts of linseed oil, 0.5-1 part of multi-vitamin for shrimps, 0.05-0.1 parts of vitamin C, 0.005-0.05 parts of vitamin E, 0.5-1 part of compound minerals for shrimps, 0.5-1 part of mannan oligosaccharide, 0.1-0.5 parts of natural steroid sarsasapogenin, 0.1-0.5 parts of Brevibacillus laterosporus, 0.2-0.3 parts of choline chloride, 2-4 parts of soybean phospholipid oil, 1-3 parts of calcium dihydrogen phosphateand 0.5-2 parts of calcium lactate. The high-yield shrimp feed with the function of effectively improving immunity has an effect of promoting shrimp growth, increases survival rate of juvenile shrimps, improves immunity of the shrimps and further has effects of preventing and treating hepatopathy and enteritis of the shrimps.

The invention discloses an improved brine shrimp hatching and collecting method. The method comprises the steps that a hatching device is disinfected and cleaned; hatching liquid is added to the hatching device, brine shrimp eggs are put into the hatching device, and hatching is conducted for 20 h-28 h at the temperature of 24 DEG C-32 DEG C, wherein the hatching liquid is a baysalt aqueous solution with the concentration of 0.5%-2.5% and the pH of 7.0-10; brine shrimp larvae are collected after hatching is completed; the collected brine shrimp larvae are disinfected, cleaned and collected toobtain brine shrimps. According to the method, a solution scheme is provided to overcome the defects that the hatching conditions of current brine shrimps have to be improved, standards of laboratorybrine shrimp hatching are not formed and hatched brine shrimp larva may have pathogenic microorganisms and obtain the brine shrimp larva with high hatching rate, high survival rate and high obtainingrate, the hatching operation of the brine shrimp is simple, the hatching conditions are easy to control, raw materials needed by hatching is environmentally-friendly and easy to obtain, and laboratorybrine shrimp hatching standards are formed.

The invention provides an epinephelus septemfasciatus parent fish reproduction and maturing bait and a preparation method thereof. The epinephelus septemfasciatus parent fish reproduction and maturing bait is formed by following components in percentage: 30% of artificially-matched powder feed (main components comprise fish meal, starch, soybean meal powder, peanut bran powder and the like), 10% of opossum shrimp powder, 10% of oyster / mya arenaria linnaens meat (fresh and alive products or chilled products), 20% of sardinella zunasi (chilled products), 3.2% of concentrated micro-mud marimo, 10% of loligo japonica (fresh and alive products or chilled products), 10% of clam worms (fresh and alive products or chilled products), 5% of brine shrimp powder, 0.5% of compound vitamin, 0.4% of astragalus membranaceus powder, 0.4% of lecithin powder and 0.5% of immune polysaccharides. The bait disclosed by the invention not only can guarantee the nutritional requirement of parent fish, but also can effectively improve the developmental rate of parent fish sexual glands, accelerate the sexual glands to synchronously develop and improve the egg laying amount and the ovum quality of female parent fish, so as to lay a foundation for large-scale larval rearing of epinephelus septemfasciatus.

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 method of measuring hatching rate, ghost rate and death rate of brine shrimp simultaneously includes setting sea water soaked white filter paper inside transparent glass culture dish and setting brine shrimp eggs before covering the dish with cover; hatching inside biochemical incubator under controlled temperature and lighting conditions; counting after hatching the hatched eggs with orange larva beside the egg, the death eggs with complete egg grain and the ghost egg with deformation and without larva beside the egg; and calculating the hatching rate, ghost rate and death rate of brine shrimp. The method is simple, convenient and accurate.

Devices, such as solid supports having metal binding proteins, such as metallothionein proteins, bound thereto are disclosed for removing metals from substrates in need of having such metals removed therefrom. Specifically membranes having metallothionein proteins from the brine shrimp Artemia are disclosed for removing metals from liquid substrates. Associated methods for removing metals from substrates using metallothionein proteins are also disclosed.

The invention relates to a formula of a high protein feed. The formula of a high protein feed is characterized in that main ingredients in the formula are formed by natural drying of brine shrimps fished in natural environment, and the auxiliary ingredients are natural composite feed prepared from corns, bean pulps, fish meals, bone meals, wheat bran, shellfish meals, salt and the like, wherein the ratio of the main ingredients to the auxiliary ingredients in the formula is 10-50: 95-115. When the high protein feed is used as feed for chickens, the contents of fat, carbohydrate and cholesterol in eggs are obviously reduced, the contents of necessary macroelement calcium and microelements zinc, iron and selenium for human bodies are obviously increased, and both the contents of fat-soluble vitamins VA and VE in eggs are increased by more than 500%. Simultaneously, the invention represents a new approach to the utilization of abundant artemia resources and the development of laying hen breeding industry.

The invention discloses special culturing salt for increasing the hatchability of brine shrimp eggs. The incubation of the brine shrimp eggs is performed in an incubation culture medium, different substances are added to the incubation culture medium and are mixed to prepare special salt in the solid powder manner according to the following corresponding percentage by weight: 85-90% of sodium chloride, 3-5% of magnesium chloride, 2-4% of magnesium sulphate, 2-3% of calcium chloride, 2-3% of potassium chloride, 1-2% of sodium bicarbonate, 0.2-0.8% of sodium carbonate, and 0.1-0.15% of calcium peroxide. The concentration of the incubation culture medium is 28-35 g / L, and the density of the brine shrimp eggs in the incubation culture medium is less than or equal to 3 g of dried brine shrimp eggs per liter of the incubation culture medium. The method not only guarantees the salinity desired by the incubation of the brine shrimp eggs, but also does not cause a side effect on the incubation of the brine shrimp eggs; most important of all, varied component salt substances and an appropriate amount of the calcium peroxide can destroy the diapause eggs in the brine shrimp eggs, and the brine shrimp eggs are promoted to incubate brine shrimp nauplius which can freely go, so that the hatchability of the brine shrimp eggs reaches 80% or above.

The invention discloses starter feed for mandarin fish and a preparation method thereof. The starter feed is made from, by weight, 20-60% of white fish meal, 10-30% of chicken meal, 3-10% of egg meal,3-10% of beer yeast, 10-30% of wet brine shrimp, 10-30% of fresh shrimp, 15-30% of flour, 1-5% of fish oil, 1-3% of phospholipids, 1-3% of betaine, 1-2% of vitamin mixture, 2-4% of mineral mixture, 2-6% of EPA (eicosapentaenoic acid), 1-5% of DHA (docosahexaenoic acid), 1-5% of a microbial preparation, and 1-2% of a food attractant. The starter feed herein is developed and researched according tonutrient needs and feeding characteristics of the mandarin fish, and the content of animal proteins is increased; the whole formulation is optimized, the particle size of the starter feed may reach dozens and even hundreds of micrometers, the requirements of different specifications of young fishes for particle size palatability can be met, digestibility, absorbability and attractiveness of the starter feed are effectively improved, starting rate is significantly increased, and fry survival rate is effectively increased.

The invention provides a method for hatching diapause brine shrimp eggs under blue light and solves the problem that the hatching rate of the brine shrimp eggs under weak light is low. The method has the advantages that diapause brine shrimp egg hatching under the blue light is achieved, diapause brine shrimp egg hatching rate under the blue light can be increased by controlling factors such as light intensity, temperature, pH value and dissolved oxygen, the hatching rate in 24 hours can reach more than 89%, stable hatching rate is guaranteed, and stable hatching rate of large hatcheries is also guaranteed.