CN116806749B - Artificial propagation method for odontobutis obscura - Google Patents
Artificial propagation method for odontobutis obscura Download PDFInfo
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- CN116806749B CN116806749B CN202311098798.3A CN202311098798A CN116806749B CN 116806749 B CN116806749 B CN 116806749B CN 202311098798 A CN202311098798 A CN 202311098798A CN 116806749 B CN116806749 B CN 116806749B
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- 241001669656 Odontobutis obscura Species 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims description 23
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 241001465754 Metazoa Species 0.000 claims description 19
- 210000001835 viscera Anatomy 0.000 claims description 12
- 230000012447 hatching Effects 0.000 claims description 11
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- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 4
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- 238000006213 oxygenation reaction Methods 0.000 claims description 3
- 235000011837 pasties Nutrition 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 2
- 238000011534 incubation Methods 0.000 claims 1
- 235000019688 fish Nutrition 0.000 abstract description 86
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- 238000009360 aquaculture Methods 0.000 abstract description 3
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- 241000972773 Aulopiformes Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 229960004407 chorionic gonadotrophin Drugs 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
- A01K61/17—Hatching, e.g. incubators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention belongs to the technical field of aquaculture, and discloses an artificial breeding method of odontobutis obscurus, which comprises the steps of building a fry breeding net cage in a pond, breeding female and male fries in a net cage, putting the female and male odontobutis obscurus into the same net cage for breeding after the female and male fries enter a breeding period, arranging brown slices or clam shells at the pond edge, monitoring the water temperature, the pH value and the dissolved oxygen of the pond in the spawning stage of the odontobutis obscurus, and feeding after the odontobutis obscurus fries appear in the pond for 18-24 days. According to the invention, by carrying out separate cultivation on different growth stages of the odontobutis obscura, the problem that the quantity is difficult to amplify due to the fact that the odontobutis obscura has similar phase residues of large and small fishes is avoided, meanwhile, fish nests with different densities are arranged at the pond side according to the body type characteristics of male fishes, the situation that male fishes easily contact the fish nests is avoided, odontobutis obscurus eggs are eaten, and the yield of odontobutis obscurus is further influenced.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to an artificial propagation method of odontobutis obscurus.
Background
Odontobutis obscura is an important freshwater aquaculture fish, is delicious in meat quality, high in nutritive value and deeply favored by consumers, and in the cultivation process, obvious differences exist in the growth among the individual Odontobutis obscura, and the individual-sized Odontobutis obscura can prey on the same kind.
The parent fish is subjected to antenatal reinforced cultivation to ensure that gonad development is relatively tidy, temperature regulation, running water stimulation and other methods are adopted to promote synchronous spawning and fertilization of parent fish groups, synchronous spawning rate and fertilization rate of parent fish groups are effectively improved, full artificial control of water quality and temperature is adopted to carry out fertilized egg hatching, artificial conservation, dead egg removal and other measures, drug disinfection is combined to effectively prevent the fertilized eggs from rotting and dying, hatching rate is obviously improved, the whole technology is carried out under indoor full artificial control conditions, the influence of external environment factors is avoided, the operation is convenient and reliable, stable production of the odontobutis obscurus fries can be ensured, the mass production problem of the odontobutis obscurus fries is solved well, the hatching rate reaches 85%, and the survival rate of the odontobutis 80%, because the artificial breeding and hatching of odontobutis for the cultivation service, the mode is difficult to popularize in a pond, simultaneously, the feeding habit of odontobutis difficult to popularize, and the feed-like animals have the feeding habit condition, and the problem of the odontobutis also the fact that the feed-like can not be easily popularized in the pond, and the feeding rate is high, and the feeding rate of the odontobutis the problem can not be caused in the same time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an artificial propagation method of odontobutis obscura, which solves the problems in the prior art, and avoids the problem that the quantity is difficult to amplify caused by the phenomenon that the odontobutis obscura eats the same class of small fish and the phenomenon of the same class of the small fish is left in different growth stages of the odontobutis obscurus, meanwhile, fish nests with different densities are built at the pond edge according to the body type characteristics of male fish, so that the male fish is prevented from easily contacting the fish nests, the male fish is prevented from eating fish eggs, and the yield of the odontobutis obscurus is further influenced; in addition, by separating the male and female odontobutis obscurus into net cages for cultivation, the cultivation density of the male odontobutis obscurus is reduced, the situation that the same kind of odontobutis obscurus is eaten is avoided, and when the odontobutis obscurus enters a propagation period, the male and female odontobutis obscurus is put into the propagation case according to proportion, so that the parent fish efficiency is improved, the centralized spawning of the female odontobutis obscurus in the propagation period is also facilitated, the cultivation efficiency is obviously improved, and the death rate of high-quality fries is reduced as much as possible.
In order to achieve the above purpose, the present invention provides the following technical solutions: an artificial propagation method of odontobutis obscura comprises the following steps:
s1: selecting a pond with the water depth of 1-1.5 m and the area of more than 3 mu, cleaning, and building a fish fry breeding cultivation net cage in the pond;
s2: selecting high-quality fries, and according to a male-female ratio of 2:1, separating female and male fish fries into net cages for cultivation;
s3: an oxygenation device is arranged in the net cage, and feed is domesticated and fed in the cultivation process, wherein the feed needs to contain animal feed;
s4: after the breeding period, the male and female odontobutis obscurus are proportionally sent into the same net cage, and animal viscera are added into the feed;
s5: when the odontobutis obscura in the net cage enters a propagation stage, a plurality of brown slices or clam shells are distributed on the pond edge, a water pump is started to enable water flow in the pond to be in a micro-flow state, and the odontobutis obscura in the net cage is placed in the pond;
s6: monitoring the water temperature, the pH value and the dissolved oxygen of the pond in the spawning stage of the odontobutis obscurus;
s7: after 18-24 days, after the odontobutis obscurus seedlings appear in the pond, the odontobutis obscurus seedlings start to domesticate and feed, plankton feeding is combined, and after 15 days, animal viscera are added into the feed for mixed feeding.
Further:
according to the artificial propagation method of the odontobutis obscura, before the odontobutis obscura is cultivated, the pond base is laid on the bottom of the pond, sand is paved on the bottom of the pond, and then 60-100 kg of quicklime and 13.5 kg of bleaching powder are sprayed on the whole pond per mu according to the area of the pond to clean and disinfect the pond;
10-15 days after pond cleaning, putting fish fries into the pond, wherein the water temperature difference is not more than 2 ℃;
the depth of the net cage under water is about 0.5-0.7 m, and after the fish fries leave the pond, fresh water is injected at intervals of 3-5 days;
mixing fresh animal viscera with flour by a meat grinder to obtain pasty mixed feed for feeding;
in the spawning stage, the pond edge is built for producing ovaries, and a plurality of palm sheets or clam shells are arranged, so that the pond edge is provided with a protruding ladder-shaped structure.
The hatching device comprises an artificial breeding method of the odontobutis obscura, an artificial breeding box and a male odontobutis obscura box, wherein the artificial breeding method comprises the steps of a frame, a buoyancy barrel, a net rack and a transverse plate, the transverse plate is respectively installed on four sides of the top surface of the frame, the net rack is installed at the bottom of the frame, the buoyancy barrel is suspended on the water surface of a pond, the buoyancy barrel is installed at the bottom of the frame, the artificial breeding box is communicated with the channel, and a fish outlet bag is formed in the front end of the breeding box.
The structure of the male odontobutis obscura box and the female odontobutis obscura box are the same as the structure of the breeding box.
The channel between the male odontobutis obscura box and the female odontobutis obscura box is bound and sealed by a rope body in a non-propagation period.
Compared with the prior art, the invention has the technical effects and advantages that:
1) According to the artificial propagation method of the odontobutis obscurus, the problem that the quantity is difficult to amplify due to the fact that the odontobutis obscurus eats the same class of small fish and the phenomenon of the same class of the small fish is remained is avoided by carrying out separate culture on different growth stages of the odontobutis obscurus, meanwhile, fish nests with different densities are built on the pond side according to the body type characteristics of the male fish, the male fish is prevented from easily contacting the fish nest, the male fish is prevented from eating fish eggs, and the yield of the odontobutis obscurus is further influenced.
2) According to the artificial propagation method of the odontobutis obscurus, the female odontobutis obscurus is cultivated in the net cage, so that the cultivation density of the odontobutis obscurus is reduced, the situation that the same kind of odontobutis obscurus is eaten is avoided, when the odontobutis obscurus enters the propagation period, the female odontobutis obscurus is put into the propagation box according to the proportion, the parent fish efficiency is improved, the centralized parturition of the female odontobutis obscurus in the propagation period is facilitated, the cultivation efficiency is remarkably improved, and the death rate of high-quality fries is reduced as much as possible.
Drawings
FIG. 1 is a schematic view showing the overall structure of an hatching apparatus of the present invention;
fig. 2 is a schematic view of a connection structure of the hatching apparatus of the present invention.
The reference numerals are: 1. an Odontobutis obscura box; 2. a cross plate; 3. discharging the fish bag; 4. a net rack; 5. a buoyancy barrel; 6. a frame; 7. a reproduction tank; 8. an Odontobutis obscura box; 9. a channel.
Detailed Description
The embodiments of the present invention will be described more fully below with reference to the accompanying drawings, and the configurations of the structures described in the following embodiments are examples, but the structures according to the present invention are not limited to the structures described in the following embodiments, and all other embodiments obtained without any creative effort by a person skilled in the art are within the scope of protection of the present invention.
Examples
An artificial propagation method of odontobutis obscura comprises the following steps:
s1: the pond with the water depth of 1-1.5 m and the pond area of more than 3 mu is selected, and the larger the pond area is, the better the pond area is. After the pond is cleaned, controlling the pH value of the pond to be 6.5-8.0, and planting aquatic plants in the pond, wherein the aquatic plants mainly comprise water hyacinth and water peanut; when the water hyacinth is too much, the water hyacinth can be cleaned manually, and the defects are that the air temperature is too low and the water hyacinth cannot overwintere, and the water hyacinth can overwintere but is not cleaned well, and the water hyacinth can be considered specifically according to the actual situation of the region. Constructing a fish fry propagation and cultivation net cage in a pond, controlling the quantity of fish fries, placing 2000 fish of the female odontobutis obscurus and 1000 fish of the male odontobutis obscurus in a single net cage;
s2: selecting high-quality fries, and breeding the fries according to a net cage, wherein the male and female fries are similar in shape, the male and female odontobutis obscurus are difficult to distinguish from the shape, the male fries are easy to distinguish in a breeding season, the male fries are slightly bigger than the female fries, the abdomen is narrow, the abdomen of the female fries is enlarged and soft, no or few silver gray spots exist on the hip fins of the female fries, dense small spots are distributed on the hip fins of the male fries and around the breeding holes, the proportion of the male and female odontobutis obscurus is 2:1, and 5-10 kg/mu of egg-holding freshwater shrimps can be put into a pond at the same time to be naturally bred in the pond;
s3: the net cage is internally provided with oxygenation equipment, because the space in the net cage is limited, more fish fries need to be oxygenated, the situation that the fish fries are anoxic is avoided, the fish fries are domesticated and fed in the net cage culture process, the feed needs to contain animal feed, and the fish feeding habit in the sand pond is deviated to animal feeding habit, if the animal feed is added at first, the odontobutis obscurus does not eat the feed and grows slowly, and meanwhile, the raising cost is greatly increased;
s4: after the fries enter the propagation period, the propagation period is generally selected from the late 5 months to the middle 6 months, or 1 month and 2 months after the year, the male and female odontobutis obscurus are fed into the same net cage according to the proportion, and animal viscera are added into the feed, so that the nutrition can be improved, the activity of the male odontobutis obscurus is improved, and the spawning quantity of the female odontobutis obscurus is ensured by adding the animal viscera into the animal feed;
s5: the female fish fry and male fish fry in the net cage enter a breeding stage, a plurality of palm sheets or clam shells are uniformly distributed at the side of the pond to form fish nests, meanwhile, the fish nests are prevented from being too dense, a water pump is started to enable water flow in the pond to be in a micro-flow state, the flow speed is preferably 30m/min, the water flow in the micro-flow state can stimulate parent fish, the fish fry in the net cage is placed in the pond, and the fish fry in the breeding box is placed in the pond through a fish outlet bag;
s6: in the spawning stage of the fish fry, monitoring the water temperature, pH value and dissolved oxygen amount of the pond, specifically referring to the water temperature of 17-26 ℃, the pH value of 7.0-8.0, the transparency of 30-50 cm, the dissolved oxygen of more than 5.0 mg/L and the ammonia nitrogen of less than 0.5 mg/L; because the territory consciousness of the male fish is strong, the male fish is easy to eat eggs, and the characteristics that the male fish is generally larger than the female fish are utilized, a plurality of palm sheets or clam shells are arranged at the pond edge, so that the female fish with smaller body size and expanded abdomen is close to and prone to be prone to, and the male fish with larger individual and narrow abdomen is difficult to prone to be on the palm sheets or the clam shells close to the pond edge. Spraying bleaching powder or hydrogen peroxide solution with the concentration of 1 mg/L and the concentration of 400 mg/L along the side of the pond to disinfect, and disinfecting fertilized eggs of female fishes;
s7: raising the hatching temperature at 25-30 ℃ at the pond edge, and building a light shielding plate at the fish nest at the pond edge, so that hatching is performed in a low light state, and simultaneously, trace aeration is performed to ensure sufficient dissolved oxygen in embryo development; after 18-24 days, after the odontobutis obscurus seedlings appear in the pond, an isolation net can be built along the vicinity of the fish nest, so that the seedlings are in the isolation net, domestication and feed feeding are carried out, and plankton feeding is combined; after 15 days, animal viscera are added into the feed for mixed feeding.
Before the odontobutis obscurus is cultivated, the pond base is laid on the bottom of the pond by stones and sand is laid, so that convenience in water discharge and injection is ensured. The method comprises the steps of clearing a pond before cultivation, draining pond water, removing sludge, exposing to dry and crack at the bottom of the pond, sterilizing by sun exposure, re-injecting new water, and sprinkling the pond with quicklime 60-100 kg and bleaching powder 13.5 kg per mu.
10-15 days after pond cleaning, fish fries are put into the pond, and the water temperature difference is not more than 2 ℃.
The depth of the net cage under water is about 0.5-0.7 m, and fresh water is injected at intervals of 3-5 days after the fish fries leave the pond.
Mixing fresh animal viscera with flour by a meat grinder to obtain pasty mixed feed for feeding.
In the spawning stage, a plurality of palm sheets or clam shells are arranged on the pond edge to build the spawning ovary, so that the pond edge has a protruding ladder-shaped structure.
As shown in fig. 1 and 2, the hatching apparatus according to the present application includes: the device comprises an odontobutis obscura box 1, an odontobutis obscura box 8 and a breeding box 7, wherein the odontobutis obscura box 1 comprises a frame 6, a buoyancy barrel 5, a net rack 4 and a transverse plate 2; the buoyancy barrel 5 is suspended on the water surface of the pond, the buoyancy barrel 5 is hollow in plastic, the buoyancy barrel 5 is arranged at the bottom of the frame 6, the buoyancy barrel 5 with corresponding quantity is increased according to the actual size of the frame 6, the transverse plates 2 are respectively arranged on four sides of the top surface of the frame 6, the transverse plates 2 are in a flat plate shape, the transverse plates 2 are used for walking by people, the net rack 4 is arranged at the bottom of the frame 6, the net rack 4 is provided with four supporting rods, the supporting rods correspond to four corners of the frame 6, the supporting rods are inserted into the bottom of the pond, a net layer is enclosed between the four groups of supporting rods, the net rack 4 is formed by the four groups of supporting rods and the net layer, the male odontobutis obscura box 1 and the female odontobutis obscura box 8 are respectively provided with a channel 9 which is communicated with the propagation box 7, and the front end of the propagation box 7 is provided with the fish bag 3.
Wherein the structure of the male odontobutis obscura box 1 and the structure of the female odontobutis obscura box 8 are the same as the structure of the breeding box 7.
The channel 9 between the male odontobutis obscura box 1, the female odontobutis obscura box 8 and the breeding box 7 is sealed by rope bundling in the non-breeding period.
Odontobutis obscura has strong stress resistance, low oxygen resistance and low temperature resistance, has low requirements on water depth, can be used as bait for insect larvae, small fishes or shrimps and fish eggs in natural water, can be used as feed for animal viscera, livestock processing offcuts and fresh miscellaneous fishes, and can be used as feed by being matched with bean cakes and corn flour, and can replace natural bait after simple domestication.
In the cultivation mode, the benthonic and feeding habits of the odontobutis obscura are utilized, so that the odontobutis obscura can be mixed with traditional fishes for cultivation, the utilization rate of feed and water is improved, and high-density pond cultivation and paddy field cultivation can be developed.
The specific implementation is as follows:
the method comprises the steps of (1) hastening parturition aiming at Odontobutis obscurus;
the oxytocic agent for odontobutis obscurus is composed of chorionic gonadotrophin (HCG), luteinizing hormone analogue, diotone and salmon hormone, and can be used singly or in combination, and is divided into a first injection and a second injection, and is usually injected at the base of pectoral fin of odontobutis obscurus, for example, HCG has the best oxytocic effect.
Aiming at stocking density;
when the fish is planted, the fish seeds with different specifications are cultured according to large, medium and small ponds, so that the phenomenon of similar residual food is avoided, wherein the optimized odontobutis obscurus is placed in a net cage for culture, the optimized odontobutis obscurus is planted as a seedling, the pond is planted into larger adult fish, the cultured young fish is hatched in an isolation net built by a fish nest, the young fish reaches about 3cm, and then the isolation net is removed.
Configuring for feed;
odontobutis obscura prefers to eat fresh or frozen small trash fish, shrimp, crab, shellfish and the like, and mainly feeds the fresh small crab and flour mixed feed when in artificial culture, wherein the trash fish, shrimp and shellfish are auxiliary baits; feeding mixed plankton feed to the seedlings in the net cage; feeding mixed animal viscera or mixed fish feed into the breeding box; the freshwater shrimps, shellfish and small trash fish which are bred in the pond can be used for predating the large odontobutis obscurus in the pond; and feeding the young shrimps in the isolation net with the feed which is obtained by uniformly mixing the young shrimps ground by the grinder with flour.
Aiming at feeding frequency;
the fish fries in the net cage are fed for 1-2 times every day, the feeding amount is regulated according to the quantity of the fish, feeding, water quality, water temperature, weather and other conditions, the adult fish in the pond is fed for 1 time every day or every other day, the seedlings in the isolation net are fed for 2-3 times a day, the general feeding amount is 8% -10% of the weight of the fish, the fish fries are basically fed after 40 minutes, and the water quality is prevented from being destroyed after the feed precipitation and spoilage.
Aiming at high temperature and overwintering;
in high temperature seasons, particularly under the condition of sun exposure, the fish pond must keep the water depth of more than 1.5 meters, and many small hidden objects are needed to be placed on the water surface so as to enable fishes to inhabit in a scattered manner, so that the condition that the fish shoals are gathered and mutually attacked is avoided, and meanwhile, the structure for shielding light is also built for the fish nest on the side of the pond. In winter, when the water temperature is below 15 ℃, the odontobutis obscurus generally does not forge, death starts below 10 ℃, nutrition management should be enhanced before overwintering, fattening is carried out, the fishes are moved to a pond with better wind-shielding or mud properties, and the placed inhabiting hidden objects are large and can be properly covered on the ponds.
Having described the basic principles, main features and advantages of the present invention, it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the principles or basic features of the present invention; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Although embodiments of the present invention have been described and illustrated, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and essential characteristics of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The artificial propagation method of the odontobutis obscurus further comprises an incubation device, and is characterized in that: the hatching apparatus includes: an odontobutis obscura box (1), an odontobutis obscura box (8) and a breeding box (7); the male odontobutis obscura box (1) comprises a frame (6), a buoyancy barrel (5), a net rack (4) and a transverse plate (2), wherein the transverse plate (2) is respectively installed on four sides of the top of the frame (6), the net rack (4) is installed at the bottom of the frame, the buoyancy barrel (5) is suspended on the water surface of a pond and is installed at the bottom of the frame (6); the male odontobutis obscura box (1) and the female odontobutis obscura box (8) are respectively provided with a channel (9) connected with a breeding box (7), and the front end of the breeding box (7) is provided with a fish outlet bag (3); the structure of the male odontobutis obscura box (1), the structure of the female odontobutis obscura box (8) and the structure of the breeding box (7) are the same, the channel (9) between the female odontobutis obscura box (8) and the breeding box (7) is bound and sealed by using a rope body in a non-breeding period, the channel (9) between the female odontobutis obscura box (8) and the breeding box (7) is bound and sealed by using the rope body in the non-breeding period;
the propagation method is as follows:
s1: selecting a pond with the water depth of 1-1.5 m and the area of more than 3 mu, cleaning, and building a fish fry breeding cultivation net cage in the pond;
s2: selecting high-quality fries, and according to a male-female ratio of 2:1, separating female and male fish fries into net cages for cultivation;
s3: an oxygenation device is arranged in the net cage, and feed is domesticated and fed in the cultivation process, wherein the feed needs to contain animal feed;
s4: after the breeding period, the male and female odontobutis obscurus are proportionally sent into the same net cage, and animal viscera are added into the feed;
s5: when the odontobutis obscura in the net cage enters a propagation stage, a plurality of brown slices or clam shells are distributed on the pond edge, a water pump is started to enable water flow in the pond to be in a micro-flow state, and the odontobutis obscura in the net cage is placed in the pond;
s6: monitoring the water temperature, the pH value and the dissolved oxygen of the pond in the spawning stage of the odontobutis obscurus;
s7: after 18-24 days, after the odontobutis obscurus seedlings appear in the pond, the odontobutis obscurus seedlings start to domesticate and feed, plankton feeding is combined, and after 15 days, animal viscera are added into the feed for mixed feeding.
2. The artificial propagation method of odontobutis obscura as claimed in claim 1, characterized by comprising the steps of: before the odontobutis obscurus is cultured, the stone pond foundation at the bottom of the pond is paved with sand, and then 60-100 kg of quicklime per mu and 13.5 kg of bleaching powder are sprayed into the whole pond according to the area of the pond to clean and disinfect the pond.
3. The artificial propagation method of odontobutis obscura as claimed in claim 1, characterized by comprising the steps of: 10-15 days after pond cleaning, fish fries are put into the pond, and the water temperature difference is not more than 2 ℃.
4. The artificial propagation method of odontobutis obscura as claimed in claim 1, characterized by comprising the steps of: the depth of the net cage under water is 0.5-0.7 m, and fresh water is injected at intervals of 3-5 days after the fish fries leave the pond.
5. The artificial propagation method of odontobutis obscura as claimed in claim 1, characterized by comprising the steps of: mixing fresh animal viscera with flour by a meat grinder to obtain pasty mixed feed for feeding.
6. The artificial propagation method of odontobutis obscura as claimed in claim 1, characterized by comprising the steps of: in the spawning stage, the pond edge is built for producing ovaries, and a plurality of palm sheets or clam shells are arranged, so that the pond edge is provided with a protruding ladder-shaped structure.
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