CN111642428A - Indoor cement pond high-density breeding method and system for Gymnocypris acuminata - Google Patents
Indoor cement pond high-density breeding method and system for Gymnocypris acuminata Download PDFInfo
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- CN111642428A CN111642428A CN202010565449.8A CN202010565449A CN111642428A CN 111642428 A CN111642428 A CN 111642428A CN 202010565449 A CN202010565449 A CN 202010565449A CN 111642428 A CN111642428 A CN 111642428A
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- 239000004568 cement Substances 0.000 title claims abstract description 81
- 238000009395 breeding Methods 0.000 title claims abstract description 32
- 241001275923 Gymnocypris Species 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 30
- 230000001488 breeding effect Effects 0.000 claims abstract description 24
- 241000251468 Actinopterygii Species 0.000 claims abstract description 18
- 238000002791 soaking Methods 0.000 claims abstract description 16
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 13
- 239000011780 sodium chloride Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 238000012136 culture method Methods 0.000 claims abstract description 7
- 230000000249 desinfective effect Effects 0.000 claims abstract description 6
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 6
- 241000256128 Chironomus <genus> Species 0.000 claims description 16
- 241001275921 Gymnocypris przewalskii Species 0.000 claims description 13
- 238000005273 aeration Methods 0.000 claims description 12
- 239000004575 stone Substances 0.000 claims description 11
- 239000010865 sewage Substances 0.000 claims description 6
- 241000252231 Cyprinus Species 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 241001671870 Carpiodes Species 0.000 claims description 2
- 238000012364 cultivation method Methods 0.000 claims 1
- 241001489469 Procypris Species 0.000 abstract 1
- 230000003203 everyday effect Effects 0.000 abstract 1
- 241000252233 Cyprinus carpio Species 0.000 description 6
- 230000001954 sterilising effect Effects 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 241001275867 Schizothorax Species 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000037406 food intake Effects 0.000 description 2
- 235000012631 food intake Nutrition 0.000 description 2
- 244000045947 parasite Species 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241001677838 Cyprinus carpio nudus Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 241000251539 Vertebrata <Metazoa> Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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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
- A01K61/80—Feeding devices
-
- 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
-
- 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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 provides a high-density indoor cement pond culture method for Gymnocypris procypris, which comprises the steps of selecting fry with the length of more than 3cm for culture; before fry stocking, soaking a cement pond for 24h by using potassium permanganate for disinfection, and after the disinfection is finished, feeding water; breeding 500-1000 fries in each cubic water body, and soaking and disinfecting the fries for 3-5 minutes by using 1% saline water before breeding; the water temperature of the cement pond is 8-18 ℃, the dissolved oxygen is more than 5mg/L, the feed is fed twice a day, the feed is frozen chironomid larvae, and the feed feeding amount is 3-5% of the total weight of fish bodies every day. The method has the characteristics of high density, high yield and easy capture, and is suitable for large-scale artificial breeding of Gymnocypris.
Description
Technical Field
The invention relates to the technical field of fish reproduction, in particular to a high-density indoor cement pond culture method for Gymnocypris.
Background
Cyprinus carpiod belongs to Cyprinaceae, Schizothorax subfamily, and Cyprinus, and is one of the important native economic fishes in Tibet. The tip naked carp belongs to a highly specific grade in three grade groups of schizothorax bigardon, and is only distributed in each big trunk tributary region with the altitude of 3600 meters above the Yanuguengzhuang midstream. The special ecological environment is formed due to high altitude and low annual average water temperature, and the Gymnocypris acuminata is suitable for the environment with precipitation and alpine snow water as sources and clear water flow, and mainly eats other fishes, aquatic insects and the like. In recent years, under the influence of ecological environment and human activities, the living environment and the habitation of Gymnocypris acuminata are gradually worsened, and the living space of the Cyprinus carpio-charaeli cascade hydropower station is greatly compressed due to the construction of the Yaluzang Bujiang cascade hydropower station, so that the germplasm resource quantity of the Cyprinus carpio is sharply reduced, and the Cyprinus carpio-crassipes is listed in the red book of endangered animals and the red record of vertebrates in China.
At present, the artificial propagation of Gymnocypris acuminata is successful, the invention patent CN201910627176.2 discloses an artificial propagation method of Gymnocypris acuminata, technical support is provided for preservation of Gymnocypris acuminata germplasm resources, the Gymnocypris acuminata has higher economic value in production places and market, and has certain application and popularization values, but few Gymnocypris acuminata artificial breeding is realized.
Disclosure of Invention
Aiming at the problem of blank artificial breeding of Gymnocypris acuminata, the invention provides an indoor cement pond high-density breeding method suitable for Gymnocypris acuminata, which has the characteristics of high density, high yield and easiness in capture and is suitable for large-scale artificial breeding of Gymnocypris acuminata.
The technical scheme adopted by the invention is as follows:
an indoor cement pond high-density culture method for Gymnocypris przewalskii comprises the following steps:
A. fry selection
The fry is derived from self-breeding offspring fries, and fries which are more than 3cm long are selected for breeding;
B. fry stocking
Before fry stocking, soaking a cement culture pond for 24 hours by using potassium permanganate for disinfection, and after the disinfection is finished, feeding water; breeding 500-1000 fries in each cubic water body, and soaking and disinfecting the fries for 3-5 minutes by using 1% saline water before breeding;
C. breeding management
And (3) performing micro-flow water culture in the cement culture pond, wherein the flow rate is 0.14-0.18 m/s, the water temperature is 8-18 ℃, the dissolved oxygen is more than 5mg/L, the feed is fed twice a day, the feed is frozen chironomid larvae, and the daily feeding amount of the feed is 3-5% of the total weight of the fish body.
The invention uses 1% saline water to soak the frozen chironomus larvas for sterilization and disinfection before feeding. Gymnocypris acuminata belongs to carnivorous fish, the food intake of the Gymnocypris acuminata is small by adopting artificial feed, and the Gymnocypris acuminata is liked to eat the feed of the Chironomus larvas which is animal feed. Before feeding, 1% saline water is used for soaking, sterilizing and disinfecting so as to prevent the bait from being brought into parasites or pathogenic bacteria.
The invention determines the weight of the fish body at each stage through sampling detection in the culture process, and adjusts the feeding amount of the fry in time.
The invention also provides a system for high-density cultivation of the indoor cement pond of the cyprinus carpio, which comprises an aeration pond, a disinfection pond, a cement cultivation pond and a drainage channel which are sequentially connected, wherein the cement cultivation pond is a square pond, one end of the cement cultivation pond is provided with a water inlet, the bottom side surface of the other end of the cement cultivation pond is provided with a drain outlet, the drain outlet is provided with a screen, the drain outlet is connected with one end of a drain pipe outside the cement cultivation pond, and the other end of the drain pipe is closed; the drainage pipe is provided with a drainage port, and the drainage port is in threaded connection with the vertical water level pipe; the drain way is arranged close to the outer side of the drain outlet of the cement culture pond, and the drain pipe and the water level pipe are positioned in the drain way.
Preferably, the slope of the bottom surface of the cement culture pond is 1% -2%, and the drain outlet is located at the lower end. Is beneficial to taking out the residual bait, excrement and other pollutants in the pond during drainage.
Preferably, the height of the cement culture pond is 1m, and the height of the water level pipe is 50-60 cm. The depth of the culture water body is controlled to be 50-60cm, and the drainage channel is higher than the height of the water level pipe. The cultivation depth of the Gymnocypris acuminata is 50-60 cm.
Further preferably, the cement culture pond is 10m long and 2m wide, and the area of the sewage outlet is 80cm2And is located on the narrower side. A rectangular cement pond with the width of 2m is selected, so that the cleaning of the bottom and the wall of the cement pond for attaching algae and the like is facilitated, and the management is convenient; the area of the sewage outlet is 80cm2The water can be drained in a short time by matching with the size of the cement culture pond, and pollutants in the cement culture pond can be easily taken out.
Preferably, the aperture of the screen is 2mm, so that the escape of the cyprinus carpio koidzumi is avoided.
Preferably, an ultraviolet disinfection lamp is arranged in the disinfection tank to disinfect and sterilize the aquaculture water body.
Preferably, 2-3 nanometer aeration discs are arranged in the aeration tank, so that sufficient dissolved oxygen in the cement culture tank is ensured.
Preferably, a feeding barrel for containing chironomus larvae is arranged above the cement culture pond, a discharge port connected with a discharge pipe is arranged on the side face of the bottom of the feeding barrel, a ball valve is arranged on the discharge pipe, air bubble stones are arranged in the feeding barrel, the distance between the air bubble stones and the bottom of the feeding barrel is 10-15cm, the air bubble stones are connected with an external air pump, and water and ice blocks are filled in the feeding barrel.
The invention has the beneficial effects that:
1. through the pollution discharge design of the cement culture pond, the sludge in the culture pond can be timely discharged, the culture water body is fully disinfected, the oxygen solubility is improved, and the full-animal-property bait which is favored by Gymnocypris acuminata is fed, so that the fry is high in survival rate and good in growth, has the characteristics of high culture density, high yield and easiness in capture, and is suitable for large-scale artificial culture of Gymnocypris acuminata.
2. Gymnocypris acuminata belongs to carnivorous fish, the food intake of the Gymnocypris acuminata is small by adopting artificial feed, and the Gymnocypris acuminata is liked to eat the feed of the Chironomus larvas which is animal feed. Soaking in 1% saline water before feeding for sterilization and disinfection to prevent the bait from being carried into parasites or pathogenic bacteria; the culture system adopts running water to feed Chironomus larvas, so that the feeding amount and the feeding speed are conveniently controlled, and the growth of Gymnocypris acuminata is facilitated.
Drawings
FIG. 1 is a schematic diagram of the indoor cement pond high-density cultivation system for Gymnocypris acuminata.
Fig. 2 is a schematic structural view of the feeding barrel.
Labeled as: 1. aeration tank, 2, disinfection pond, 3, cement culture pond, 4, drain, 5, drain, 6, blow off pipe, 7, water level pipe, 8, sterilamp, 9, nanometer aeration dish, 10, water inlet, 11, throw the storage bucket, 12, air bubble stone, 13, discharging pipe, 14, air pump, 15, ball valve.
Detailed Description
In order to more clearly and specifically illustrate the technical solution of the present invention, the present invention is further described by the following embodiments. The following examples are intended to illustrate the practice of the present invention and are not intended to limit the scope of the invention.
Example 1
An indoor cement pond high-density culture method for Gymnocypris przewalskii comprises the following steps:
A. fry selection
The fry is derived from self-breeding offspring fries, and fries which are more than 3cm long are selected for breeding;
B. fry stocking
Before fry stocking, soaking a cement culture pond for 24 hours by using potassium permanganate for disinfection, and after the disinfection is finished, feeding water; breeding 500 fries in each cubic water body, and soaking and disinfecting the fries for 3 minutes by using 1% saline water before breeding;
C. breeding management
And (3) performing microflow water culture in the cement culture pond, wherein the flow rate is 0.14m/s, the water temperature is 8-18 ℃, the dissolved oxygen is 5mg/L, the feed is fed twice a day, the feed is frozen chironomid larvae, and the daily feeding amount of the feed is 3-5% of the total weight of the fish body. Soaking the frozen chironomus larvas with 1% saline water before feeding for sterilization.
The weight of the fish body at each stage is determined by sampling detection in the culture process, and the feeding amount of the fry is adjusted in time.
Example 2
An indoor cement pond high-density culture method for Gymnocypris przewalskii comprises the following steps:
A. fry selection
The fry is derived from self-breeding offspring fries, and fries which are more than 3cm long are selected for breeding;
B. fry stocking
Before fry stocking, soaking a cement culture pond for 24 hours by using potassium permanganate for disinfection, and after the disinfection is finished, feeding water; 1000 fries are stocked in each cubic water body, and the fries are soaked in 1 percent saline water for disinfection for 5 minutes before stocking;
C. breeding management
And (3) performing microflow water culture in the cement culture pond, wherein the flow rate is 0.18m/s, the water temperature is 8-18 ℃, the dissolved oxygen is 6mg/L, the feed is fed twice a day, the feed is frozen chironomid larvae, and the daily feeding amount of the feed is 5% of the total weight of the fish body. Soaking the frozen chironomus larvas with 1% saline water before feeding for sterilization.
The weight of the fish body at each stage is determined by sampling detection in the culture process, and the feeding amount of the fry is adjusted in time.
Example 3
An indoor cement pond high-density culture method for Gymnocypris przewalskii comprises the following steps:
A. fry selection
The fry is derived from self-breeding offspring fries, and fries which are more than 3cm long are selected for breeding;
B. fry stocking
Before fry stocking, soaking a cement culture pond for 24 hours by using potassium permanganate for disinfection, and after the disinfection is finished, feeding water; and breeding 800 fries in each cubic water body, and soaking and disinfecting the fries for 4 minutes by using 1% saline water before breeding.
C. Breeding management
And (3) performing microflow water culture in the cement culture pond, wherein the flow rate is 0.16m/s, the water temperature is 8-18 ℃, the dissolved oxygen is 8mg/L, the feed is fed twice a day, the feed is frozen chironomid larvae, and the daily feeding amount of the feed is 3-5% of the total weight of the fish body. Soaking the frozen chironomus larvas with 1% saline water before feeding for sterilization.
The weight of the fish body at each stage is determined by sampling detection in the culture process, and the feeding amount of the fry is adjusted in time.
Example 4
As shown in fig. 1, the system for high-density cultivation of cyprinus carpio in an indoor cement pond comprises an aeration tank 1, a disinfection tank 2, a cement cultivation pond 3 and a drainage channel 4 which are sequentially connected, wherein the cement cultivation pond 3 is a square pond, one end of the cement cultivation pond 3 is provided with a water inlet 10, the bottom side surface of the other end of the cement cultivation pond 3 is provided with a drain outlet 5, the drain outlet 5 is provided with a screen, the drain outlet 5 is connected with one end of a drain pipe 6 outside the cement cultivation pond, and the other end of the drain pipe 6 is closed; a water outlet is arranged on the sewage discharge pipe 6 and is in threaded connection with a vertical water level pipe 7; the drain 4 is arranged close to the outer side of the drain outlet 5 of the cement culture pond, and the drain pipe 6 and the water level pipe 7 are positioned in the drain 4.
After being treated by the aeration tank 1 and the disinfection tank 2, the micro-flowing water enters the cement culture tank 3, the gradient of the bottom surface of the cement culture tank is 1-2%, and the drain outlet 5 is positioned at the lower end. Is beneficial to taking out the residual bait, excrement and other pollutants in the pond during drainage. The drain 5 sets up the screen cloth and prevents that the fry from escaping, and water level pipe 7 is connected to blow off pipe 6, and the breeding process, miniflow water last overflow from water level pipe 7 and flow away along water drainage way 4, make the water level of cement breed pond 3 remain throughout with water level pipe 7 highly uniform, water level in the pond is bred in the convenient control. When needing the blowdown, rotatory water level pipe 7 can be lifted off water level pipe 7 from blow off pipe 6, and the outlet of blow off pipe 6 exposes, and the water is followed cement and is bred 5 whole flows through the outlet of blow off pipe 6 in the drain in pond 3, and is discharged from drain 4.
Example 5
This example is based on example 4:
the slope of 3 bottom surfaces in cement culture pond is 1%, drain 5 is located lower one end.
The height of the cement culture pond 3 is 1m, and the height of the water level pipe is 50 cm.
Example 6
This example is based on example 4:
the slope of 3 bottoms surfaces in cement culture pond is 2%, drain 5 is located lower one end.
The height of the cement culture pond 3 is 1m, and the height of the water level pipe is 60 cm.
The cement culture pond is 3 m long and 2m wide, and the area of the sewage outlet 5 is 80cm2，
Preferably, the aperture of the screen is 2mm, so that the escape of the cyprinus carpio koidzumi is avoided.
Example 7
This example is based on example 4:
the slope of 3 bottoms surfaces in cement culture pond is 1.5%, drain 5 is located lower one end.
The height of the cement culture pond 3 is 1m, and the height of the water level pipe is 55 cm.
The cement culture pond is 3 m long and 2m wide, and the area of the sewage outlet 5 is 80cm2，
The aperture of the screen is 2 mm.
An ultraviolet disinfection lamp 8 is arranged in the disinfection tank 2.
2-3 nanometer aeration discs 9 are arranged in the aeration tank 1.
Example 8
This example is based on example 4:
as shown in fig. 2, a feeding barrel 11 for containing chironomus larvae is arranged above the cement culture pond 3, a discharge port connected with a discharge pipe 13 is arranged on the side surface of the bottom of the feeding barrel 11, a ball valve 15 is arranged on the discharge pipe 13, a bubbled stone 12 is arranged in the feeding barrel 11, the bubbled stone 12 is 10-15cm away from the bottom of the feeding barrel 11, the bubbled stone 12 is connected with an external air pump 14, and water and ice blocks are filled in the feeding barrel 11.
Putting the soaked and sterilized chironomus larvae into ice water in a feeding barrel to help to keep freshness, opening a ball valve, feeding the frozen chironomus larvae into a cement culture pond below along with water flow through a discharge pipe, and controlling the water yield by controlling the opening and closing of the ball valve so as to control the feeding amount and feeding time, avoid the fish school from eating too fast and help to grow Gymnocypris cyprinus carpio; meanwhile, by utilizing the fluidity of water, the bait can be quickly diffused in the aquaculture water body along with water flow. The air stones are arranged in the feeding barrel, so that the water body in the feeding barrel rolls, the frozen chironomus larvas are uniformly distributed in the water body, the uniformity of discharging is ensured, and the feeding speed and the feeding amount can be better controlled.
The method and the culture system are adopted for large-scale culture, 1000 fish fries are put in each cubic water body, and the feeding barrel feeds the frozen chironomus larvae; the control group is cultured in a conventional cement pond, frozen chironomus larvae are fed in a material spreading mode, and after 60 days of culture, the culture results are compared as follows:
TABLE 1 comparison of survival rates of Gymnocypris przewalskii fry
TABLE 2 comparison of the growth of Gymnocypris cyprinii fry
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. An indoor cement pond high-density culture method for Gymnocypris przewalskii is characterized by comprising the following steps:
A. fry selection
The fry is derived from self-breeding offspring fries, and fries which are more than 3cm long are selected for breeding;
B. fry stocking
Before fry stocking, soaking a cement culture pond for 24 hours by using potassium permanganate for disinfection, and after the disinfection is finished, feeding water; breeding 500-1000 fries in each cubic water body, and soaking and disinfecting the fries for 3-5 minutes by using 1% saline water before breeding;
C. breeding management
And (3) performing micro-flow water culture in the cement culture pond, wherein the flow rate is 0.14-0.18 m/s, the water temperature is 8-18 ℃, the dissolved oxygen is more than 5mg/L, the feed is fed twice a day, the feed is frozen chironomid larvae, and the daily feeding amount of the feed is 3-5% of the total weight of the fish body.
2. The indoor cement pond high-density cultivation method of Gymnocypris acuminata according to claim 1, wherein the frozen chironomus larvae are soaked in 1% saline water for sterilization and disinfection before feeding.
3. The indoor cement pond high-density cultivating method for Gymnocypris przewalskii according to claim 1, wherein the weight of the fish body at each stage is determined by sampling detection during the cultivating process, and the feeding amount of the fry is adjusted in time.
4. The system for indoor cement pond high-density cultivation of Cyprinus carpiod according to claim 1, which comprises an aeration tank, a disinfection tank, a cement cultivation pond and a drainage channel which are connected in sequence, wherein the cement cultivation pond is a square pond, one end of the cement cultivation pond is provided with a water inlet, the bottom side surface of the other end is provided with a drain outlet, the drain outlet is provided with a screen, the drain outlet is connected with one end of a drain pipe outside the cement cultivation pond, and the other end of the drain pipe is closed; the drainage pipe is provided with a drainage port, and the drainage port is in threaded connection with the vertical water level pipe; the drain way is arranged close to the outer side of the drain outlet of the cement culture pond, and the drain pipe and the water level pipe are positioned in the drain way.
5. The system for high-density cultivation of Gymnocypris przewalskii in the indoor cement pond according to claim 4, wherein the slope of the bottom surface of the cement cultivation pond is 1% -2%, and the drain outlet is located at the lower end.
6. The system for high-density cultivation of Gymnocypris przewalskii in the indoor cement pond according to claim 4, wherein the height of the cement cultivation pond is 1m, the height of the water level pipe is 50-60cm, and the drainage channel is higher than the height of the water level pipe.
7. The system for high-density cultivation of Gymnocypris przewalskii in an indoor cement pond according to claim 6, wherein the cement cultivation pond is 10m long and 2m wide, and the area of a sewage discharge outlet is 80cm2And is located on the narrower side.
8. The system for indoor cement pond high-density cultivation of Gymnocypris przewalskii according to claim 4, wherein the mesh size of the mesh is 2 mm.
9. The system for indoor cement pond high-density cultivation of Gymnocypris przewalskii according to claim 4, wherein an ultraviolet disinfection lamp is arranged in the disinfection pond; 2-3 nanometer aeration discs are arranged in the aeration tank.
10. The system for indoor high-density cultivation of Gymnocypris przewalskii in a cement pond according to claim 4, wherein a feeding barrel for containing chironomus larvae is arranged above the cement cultivation pond, a discharge hole connected with a discharge pipe is formed in the side face of the bottom of the feeding barrel, a ball valve is arranged on the discharge pipe, a bubbled stone is arranged in the feeding barrel, the bubbled stone is 10-15cm away from the bottom of the feeding barrel, the bubbled stone is connected with an external air pump, and water and ice blocks are filled in the feeding barrel.
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