CN113383733B - Artificial cultivation method for young spiny plum juvenile fish - Google Patents

Artificial cultivation method for young spiny plum juvenile fish Download PDF

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CN113383733B
CN113383733B CN202110848159.9A CN202110848159A CN113383733B CN 113383733 B CN113383733 B CN 113383733B CN 202110848159 A CN202110848159 A CN 202110848159A CN 113383733 B CN113383733 B CN 113383733B
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water
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water supply
fish
pond
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CN113383733A (en
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宋炜
熊逸飞
王鲁民
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East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
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East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
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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
    • A01K63/00—Receptacles for live fish, e.g. 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
    • A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
    • 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
    • A01K63/047—Liquid pumps for aquaria
    • 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 relates to an artificial breeding method of young sea croaker of Chinemys spinosus, wherein the young sea croaker is bred in a young sea breeding pool of an industrial breeding workshop, according to the ecological habits and physiological characteristics of the Chinemys spinosus, the industrial breeding is adopted, the young sea croaker bait is prepared by controlling the salinity, the water temperature, the illumination, the water flow, the dissolved oxygen, the aeration quantity and the water exchange quantity of the breeding water, the young sea croaker of the Chinemys spinosus is cultured for 55-65 days under the considered and set environmental conditions, the young sea croaker of the Chinemys spinosus is grown to be more than 3cm, and the survival rate of the young sea croaker is more than 90%.

Description

Artificial cultivation method for young spiny head mermaid
Technical Field
The invention relates to an artificial breeding method for young acanthocephalus japonicus, belonging to the technical field of mariculture.
Background
The juvenile sea buckthorn (Collichthys lucidus) belongs to Perciformes, Scienidaceae and the genus Meristotheca, is small-sized economic fish, is fresh and tender in meat quality, delicious in taste, wide in suitable temperature and salt range and rapid in growth, and is one of aquatic products favored by coastal residents in China. In recent years, under the background of serious decline of coastal large and medium-sized economic fish fishery resources, the spiny greenfish becomes a main fishing object of the traditional fishery in China and plays an important role in offshore fishery resources. The domestic research on the artificial fingerling cultivation of the acanthocephalus fasciatus is still in a groping stage, the fingerling cultivation technology is not perfect, and the fingerling survival rate is not ideal. In addition, the juvenile fish of the acanthopanax spinosus undergoes a metamorphosis process in the larval stage, the digestive system, the sensory system and the like are changed, the habit of the larval fish and the juvenile fish is greatly different, and the difficulty of artificial fry breeding of the acanthopanax spinosus is further caused. The artificial breeding technology of the juvenile echinocandis has complex process, mature seedling breeding technology is not established, and the industrial development process of the juvenile echinocandis is restricted.
Disclosure of Invention
The invention aims to provide an artificial cultivation method of young sea buckthorn juvenile fish, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the method comprises the following specific steps:
(1) the method comprises the following steps of (1) cultivating young spiny plum juvenile fishes in a fry cultivating pool of an industrial fry cultivating workshop, wherein the suitable water temperature for cultivating the young spiny plum juvenile fishes is 20-28 ℃, the salinity is 20-30, and mutation is avoided; indoor illumination can be adjusted according to weather changes, so that the illumination intensity is adjusted to be 600-1200 Lux, sudden illumination change and direct sunlight are avoided, and the proper inflation amount and cultivation density for seedling cultivation are ensured;
(2) filtering the seedling culture seawater through a 250-mesh bolting silk, adding water for 5-10 cm before the seedling culture starts to have a water level of 60cm, adding water for 20-40 cm every day before 9 days, changing the water for 20-40 cm every day after 9 days, increasing the water changing amount under special conditions that too many rotifers are bred in a pond, completely converting the food habits of the fish fries into food-intake copepods, changing the water for 30-50% every day, completely converting the food habits of the fish fries into food-intake copepods, and absorbing dirt for 1 time every day when the active escape capacity is strong;
(3) the fry is raised with bait series of rotifer, fairy shrimp, copepods and artificial compound feed, and according to the requirements of different development stages of young and young acanthocephalus platyphylla on the nutrient and palatability of the bait, different bait varieties are adopted to be matched and cross-fed, the feeding method is small amount, multiple times and slow feeding, the micro-particle feed is fed in a still water area with intensive fry, and the micro-particle feed is allowed to continuously and slowly sink after floating on the water surface for a moment so as to be fed by the fry in time.
The invention provides a seedling culture pond, which comprises a main body, wherein a water supply and drainage groove is arranged in the middle of the bottom of the main body, a drainage pipe is arranged at the bottom of the main body of the artificial culture pond, a drainage electromagnetic valve is arranged on the drainage pipe, a protective guard is arranged at the upper left side inside the main body of the artificial culture pond, a water supply component is arranged at the left side of the main body of the artificial culture pond, an oxygenation and aeration component is arranged at the right side of the main body of the artificial culture pond, the water supply component comprises a water supply pump, an input water pipe, a water supply pipe and a water supply electromagnetic valve, the input water pipe is arranged at the water inlet end of the water supply pump, the water supply pipe is arranged at the water outlet end of the water supply pump, the water supply electromagnetic valve is arranged on the water supply pipe, the input water pipe and the water supply pipe are combined by a plurality of sections of pipelines, the other end of the water supply pipe is laid along the inner wall of the main body of the artificial culture pond and corresponds to the water supply and drainage groove, oxygenate aeration subassembly includes loading board, aeration machine and aeration pipe, the tip of loading board is provided with the aeration machine, the aeration pipe is installed to the aeration end of aeration machine, the upper right side fixed connection of loading board and artificial cultivation pond main part, the other end of aeration pipe is laid along the inner wall of artificial cultivation pond main part and is provided with protection side's pipe with feed pipe and aeration pipe correspondence and correspond the setting with for the water drainage tank, the inner wall of artificial cultivation pond main part is provided with protection side's pipe.
The water supply electromagnetic valve can control the water flow speed according to the swimming condition of the young spiny globefish, and the water discharge electromagnetic valve can control the water discharge speed according to the conditions of residual baits, dead seedlings, feces and other sundries in the pool.
The appropriate aeration quantity and cultivation density for seedling cultivation are as follows: before 9 days of age, the water-soluble oxygen content in the pond is kept to be more than 6mg/L, the pH value is 7.6-8.2, and NH is kept to be 4-12L/min 4+ The content is below 0.2 mg/L. The breeding density of the young spiny plum juvenile fish is 3-5 ten thousand tails/m in the larval stage 3 The fish larvae with the total length of 20mm are 1.1-1.3 ten thousand tails/m 3 The total length of the juvenile fish of 30mm is 0.6 ten thousand to 0.9 ten thousand tails per meter 3 。
The feeding requirements are as follows: the method comprises the steps of putting rotifers into water for feeding after the young echinacea fish emerges from the membrane on the 3 rd day, completely eliminating yolk sacs of the young echinacea fish at the age of 9 days, completing the development stage of the early young echinacea fish, temporarily culturing the rotifers in seawater containing certain algae, feeding the early young echinacea fish for 2 times every day, gradually increasing the feeding time to 3-5 times, adjusting the bait varieties and the number according to the growth condition of the young echinacea fish, and fresh delivering the copepods every day, wherein as the breeding season of the young echinacea fish is close to 7 months, the number of copepods in the sea area is gradually reduced, when the fresh copepods are insufficient, the frozen copepods are selected for replacing, when the rotifers are put into a breeding pond, the density of the rotifers is kept to be 3-5/ml, when the fairy and copepods are put into the breeding pond, the density of the breeding pond is kept to be 1-2/ml, and the chlorella is regularly added every day in the breeding period of the young echinacea fish and the early young echinacea fish, so that the pond water is kept at the concentration of about 25 ten thousand/ml, the green color is slight, the feed is 25 days old, and micro-particle artificial mixed feed is fed and cultivated by micro-flowing water.
Observing the morphological change and ecological habit of the young fishes every day, performing microscopic examination on gastrointestinal fullness and gastric content, observing the ingestion condition of the young fishes, detecting the bait density condition in a pond, counting the number of dead seedlings, monitoring the change conditions of physicochemical factors such as water temperature, salinity, pH, dissolved oxygen, ammonia nitrogen, illuminance and the like, and finding out problems to be treated in time.
The invention has the following advantages and positive effects: according to the ecological habits and physiological characteristics of the juvenile fish of the acanthocephalus spinosus, the industrial seedling culture is adopted, the juvenile fish bait series of the juvenile fish of the acanthocephalus spinosus is prepared by controlling the salinity, the water temperature, the illumination, the water flow, the dissolved oxygen, the aeration quantity and the water change quantity of the seedling culture water, the juvenile fish of the acanthocephalus spinosus is cultured for 55 to 65 days under the considered set environmental conditions, the juvenile fish with the forking growth of more than 3cm is reached, and the survival rate of the juvenile fish reaches more than 90 percent.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the water supply assembly of the present invention;
fig. 3 is a schematic view of the construction of the oxygenating aeration module of the present invention.
In the figure: 1. an artificial cultivation pond main body; 101. a water supply and drainage groove; 102. a drain pipe; 103. a water discharge electromagnetic valve; 104. protecting the fence; 105. protecting the square tube; 2. a water supply assembly; 201. a feed pump; 202. an input water pipe; 203. a water supply pipe; 204. a water supply electromagnetic valve; 3. an oxygenation aeration assembly; 301. carrying a plate; 302. an aerator; 303. an aeration pipe.
Detailed Description
An artificial cultivation method of young sea buckthorn juvenile fish, comprising the following steps:
(1) the juvenile sea buckthorn is cultivated in a fry cultivating pool of an industrial fry cultivating workshop, the temperature of suitable water for fry cultivation is 20-28 ℃, the salinity is 20-30, and mutation is avoided; indoor illumination can be adjusted according to weather changes, so that the illumination intensity is adjusted to be 600-1200 Lux, sudden illumination change and direct sunlight are avoided, and the proper inflation amount and cultivation density for seedling cultivation are ensured;
(2) filtering the seedling culture seawater through a 250-mesh bolting silk, adding water for 5-10 cm every day before the seedling culture starts to have a water level of 60cm, adding water for 20-40 cm every day after the seedling culture starts to have a water level, changing the water amount every day after the seedling culture starts to have a water level of 9 days, increasing the water change amount under special conditions such as excessive rotifers in a pond, changing the feeding habits of the fish fries into feeding copepods every day by 30-50%, completely changing the feeding habits of the fish fries into feeding copepods, and absorbing the pollutants every day for 1 time when the active avoidance capacity is strong;
(3) the fry is raised with bait series of rotifer, fairy shrimp, copepods and artificial compound feed, and according to the requirements of different development stages of young and young acanthocephalus platyphylla on the nutrient and palatability of the bait, different bait varieties are adopted to be matched and cross-fed, the feeding method is small amount, multiple times and slow feeding, the micro-particle feed is fed in a still water area with intensive fry, and the micro-particle feed is allowed to continuously and slowly sink after floating on the water surface for a moment so as to be fed by the fry in time.
The appropriate aeration quantity and cultivation density for seedling cultivation are as follows: 0.2-0.6L/min before 9 days of age, and 4-12L/min after 9 days of age, so as to maintain the water dissolved oxygen in the pond at more than 6mg/L, pH 7.6-8.2, and NH 4+ The content is below 0.2 mg/L. The breeding density of the young spiny plum juvenile fish is 3-5 ten thousand tails/m in the larval stage 3 The fish larvae with the total length of 20mm are 1.1-1.3 ten thousand tails/m 3 The total length of the juvenile fish of 30mm is 0.6-0.9 ten thousand tails/m 3 。
The specific requirements of feeding are as follows: the method comprises the steps of putting rotifers into water for feeding after the young echinacea fish emerges from the membrane on the 3 rd day, completely eliminating yolk sacs of the young echinacea fish at the age of 9 days, completing the development stage of the early young echinacea fish, temporarily culturing the rotifers in seawater containing certain algae, feeding the early young echinacea fish for 2 times every day, gradually increasing the feeding time to 3-5 times, adjusting the bait varieties and the number according to the growth condition of the young echinacea fish, and fresh delivering the copepods every day, wherein as the breeding season of the young echinacea fish is close to 7 months, the number of copepods in the sea area is gradually reduced, when the fresh copepods are insufficient, the frozen copepods are selected for replacing, when the rotifers are put into a breeding pond, the density of the rotifers is kept to be 3-5/ml, when the fairy and copepods are put into the breeding pond, the density of the breeding pond is kept to be 1-2/ml, and the chlorella is regularly added every day in the breeding period of the young echinacea fish and the early young echinacea fish, so that the pond water is kept at the concentration of about 25 ten thousand/ml, the green color is slight, the feed is 25 days old, and micro-particle artificial mixed feed is fed and cultivated by micro-flowing water.
After the micro-particle artificial compound feed is fed, normal feeding can be carried out only after 5-7 days of domestication, namely, micro-particle feed is fed in the morning every day, and then other baits are fed. The feeding method is characterized in that a small amount of feed is slowly fed for multiple times, and the micro-pellet feed is fed in a still water area with dense fry and is enabled to continuously and slowly sink after floating on the water surface for a moment so as to be eaten by the fry at proper time.
TABLE 1 bait system and feeding during young spiny Meadowrue fry rearing
Figure BDA0003181470830000051
Observing the morphological change and ecological habit of the young fishes every day, performing microscopic examination on gastrointestinal fullness and gastric content, observing the ingestion condition of the young fishes, detecting the bait density condition in a pond, counting the number of dead seedlings, monitoring the change conditions of physicochemical factors such as water temperature, salinity, pH, dissolved oxygen, ammonia nitrogen, illuminance and the like, and finding out problems to be treated in time.
The fry rearing pond comprises an artificial rearing pond body 1, a water supply and drainage groove 101 is formed in the middle of the bottom of the artificial rearing pond body 1, a drainage pipe 102 is arranged at the bottom of the artificial rearing pond body 1, a drainage valve 103 is arranged on the drainage pipe 102, a protective guard 104 is arranged on the upper left side of the interior of the artificial rearing pond body 1, a water supply component 2 is arranged on the left side of the artificial rearing pond body 1, and an oxygen charging aeration component 3 is arranged on the right side of the artificial rearing pond body 1.
In an embodiment, referring to fig. 1 and 2, the artificial cultivation pond body 1 is a circular pond, the height of the pond is 2m, the depth of water can reach 1.8m, the perimeter is 24m, the water supply assembly 2 comprises a water supply pump 201, an input water pipe 202, a water supply pipe 203 and a water supply electromagnetic valve 204, the input water pipe 202 is installed at the water inlet end of the water supply pump 201, the water supply pipe 203 is installed at the water outlet end of the water supply pump 201, the water supply electromagnetic valve 204 is arranged on the water supply pipe 203, the input water pipe 202 and the water supply pipe 203 are combined by a plurality of sections of pipelines, the other end of the water supply pipe 203 is laid along the inner wall of the artificial cultivation pond body 1 and corresponds to the water supply and drainage groove 101, the artificial cultivation pond body 1 can be supplied with water by the water supply assembly 2, the water supply pump 201 and the water supply electromagnetic valve 204 can regulate and control the water supply speed in the artificial cultivation pond body 1, and the water discharge pipe 102 and the water discharge valve 103 can be controlled according to the residual baits in the pond, The conditions of dead seedlings, feces and other impurities control the drainage speed, so that the integral water supply and drainage regulation is simple and convenient, and the use effect of the artificial cultivation pool main body 1 is improved.
In an embodiment, referring to fig. 1 and 3, the oxygenation aeration assembly 3 comprises a bearing plate 301, an aerator 302 and an aerator pipe 303, the aerator 302 is arranged at the end of the bearing plate 301, the aerator pipe 303 is installed at the aeration end of the aerator 302, the bearing plate 301 is fixedly connected with the upper right side of the artificial cultivation pool body 1, the other end of the aerator pipe 303 is laid along the inner wall of the artificial cultivation pool body 1 and is arranged corresponding to the water supply and drainage tank 101, the inner wall of the artificial cultivation pool body 1 and the water supply pipe 203 and the aerator pipe 303 are correspondingly provided with a protection square pipe 105, the protection of the water supply pipe 203 and the aerator pipe 303 can be improved through the protection square pipe 105 arranged on the outer wall of the water supply pipe 203 and the aerator pipe 303, the oxygenation aeration assembly 3 can ensure that the cultivation process needs continuous aeration, the aerated bubbles are fine, the pool water has no dead angle, and the cultivation quality and effect of the artificial cultivation pool body 1 are improved.
The working principle is as follows: when in use, the artificial cultivation pool main body 1 is supplied with water through the water supply pump 201, the artificial cultivation pool main body 1 is oxygenated through the aerator 302, the artificial cultivation pool main body 1 can be supplied with water through the arranged water supply assembly 2, the water supply pump 201 and the water supply electromagnetic valve 204 can regulate and control the water supply speed in the artificial cultivation pool main body 1, the water discharge speed can be controlled through the arranged drain pipe 102 and the arranged drain valve 103 according to the conditions of residual baits, dead seedlings, feces and other sundries in the pool, the integral water supply and drainage regulation is simple and convenient, the use effect of the artificial cultivation pool main body 1 is improved, the protection of the water supply pipe 203 and the aeration pipe 303 can be improved through the arranged water supply pipe 203 and the outer wall protection square pipe 105 of the aeration pipe 303, the continuous aeration can be ensured through the arranged oxygenation aeration assembly 3, the aerated bubbles are fine, the pool water has no dead angle, the cultivation quality and effect of the artificial cultivation pool main body 1 are improved.
The water supply electromagnetic valve (204) can control the water flow speed according to the swimming condition of the sea buckthorn juvenile fish, and the water discharge electromagnetic valve (103) can control the water discharge speed according to the conditions of residual baits, dead seedlings, feces and other sundries in the pool.

Claims (1)

1. An artificial cultivation method of young sea buckthorn juvenile fish is characterized in that: the method comprises the following specific steps:
(1) the method comprises the following steps of (1) cultivating young spiny plum juvenile fishes in a fry cultivating pool of an industrial fry cultivating workshop, wherein the suitable water temperature for cultivating the young spiny plum juvenile fishes is 20-28 ℃, the salinity is 20-30, and mutation is avoided; indoor illumination can be adjusted according to weather changes, so that the illumination intensity is adjusted to be 600-1200 Lux, sudden illumination change and direct sunlight are avoided, and the proper inflation amount and cultivation density for seedling cultivation are ensured; the left side of the cultivation pool main body is provided with a water supply component, and the right side of the artificial cultivation pool main body is provided with an oxygenation aeration component; the proper aeration quantity and cultivation density for seedling cultivation are as follows: before 9 days of age, the water-soluble oxygen content in the pond is kept to be more than 6mg/L, the pH value is 7.6-8.2, and NH is kept to be 4-12L/min 4+ The content is below 0.2mg/L, and the breeding density of the young sea cucumber and the young sea cucumber is 3-5 ten thousand tails/m in the larval stage 3 The fish larvae with the total length of 20mm are 1.1-1.3 ten thousand tails/m 3 The total length of the juvenile fish of 30mm is 0.6-0.9 ten thousand tails/m 3 ；
(2) Filtering the seedling culture seawater through a 250-mesh bolting silk, adding water for 5-10 cm before the seedling culture starts to have a water level of 60cm, adding water for 20-40 cm every day before 9 days, changing the water for 20-40 cm every day after 9 days, increasing the water changing amount under special conditions that too many rotifers are bred in a pond, completely converting the food habits of the fish fries into food-intake copepods, changing the water for 30-50% every day, completely converting the food habits of the fish fries into food-intake copepods, and absorbing dirt for 1 time every day when the active escape capacity is strong;
(3) the method is characterized in that the seedlings are raised by adopting bait series of rotifers, fairy worms, copepods and artificial compound feed, different bait varieties are adopted to be matched and alternately fed according to the requirements of different development stages of young and young sea carps of acanthocephalus spiny for bait nutrition and palatability, the feeding method is a small amount, multiple times and slow feeding, the micro-particle feed is fed in a still water area with dense fish fries, and the micro-particle feed continuously and slowly sinks after floating on the water surface for a moment so as to be timely fed by the fish fries, and the specific feeding requirements are as follows: the method comprises the steps of putting rotifers into water for feeding after the young echinacea fish emerges from the membrane on the 3 rd day, completely eliminating yolk sacs of the young echinacea fish at the age of 9 days, completing the development stage of the early young echinacea fish, temporarily culturing the rotifers in seawater containing certain algae, feeding the early young echinacea fish for 2 times every day, gradually increasing the feeding time to 3-5 times, adjusting the bait varieties and the number according to the growth condition of the young echinacea fish, and fresh delivering the copepods every day, wherein as the breeding season of the young echinacea fish is close to 7 months, the number of copepods in the sea area is gradually reduced, when the fresh copepods are insufficient, the frozen copepods are selected for replacing, when the rotifers are put into a breeding pond, the density of the rotifers is kept to be 3-5/ml, when the fairy and copepods are put into the breeding pond, the density of the breeding pond is kept to be 1-2/ml, and the chlorella is regularly added every day in the breeding period of the young echinacea fish and the early young echinacea fish, so that the pond water is kept at the concentration of about 25 ten thousand/ml, the feed is slightly green, 25 days old, micro-particle artificial mixed feed begins to be fed, micro-flowing water is adopted for cultivation, after the micro-particle artificial mixed feed is fed, the micro-particle artificial mixed feed can be normally eaten only through domestication for 5-7 days, namely, the micro-particle feed is fed firstly every morning, then other baits are fed, the feeding method is small, multiple and slow, the micro-particle feed is fed in a still water area with dense fish fries, the micro-particle feed is enabled to continuously and slowly sink after floating on the water surface for a moment, so that the fish fries can eat the feed at proper time,
the fry rearing pond comprises an artificial rearing pond body (1), a water supply and drainage groove (101) is arranged in the middle of the bottom of the body (1), a drainage pipe (102) is arranged at the bottom of the artificial rearing pond body (1), a drainage electromagnetic valve (103) is arranged on the drainage pipe (102), a protective guard (104) is arranged on the upper left side of the interior of the artificial rearing pond body (1), a water supply component (2) is arranged on the left side of the artificial rearing pond body (1), an oxygenation aeration component (3) is arranged on the right side of the artificial rearing pond body (1), the water supply component (2) comprises a water supply pump (201), an input water pipe (202), a water supply pipe (203) and a water supply electromagnetic valve (204), the input water pipe (202) is installed at the water inlet end of the water supply pump (201), the water supply pipe (203) is installed at the water outlet end of the water supply pump (201), the water supply electromagnetic valve (204) is arranged on the water supply pipe (203), the input water pipe (202) and the water supply pipe (203) are combined by a plurality of sections of pipelines, the other end of the water supply pipe (203) is laid along the inner wall of the artificial cultivation pond main body (1) and is correspondingly arranged with the water supply and drainage groove (101), the oxygenation aeration component (3) comprises a bearing plate (301), an aerator (302) and an aeration pipe (303), the end part of the bearing plate (301) is provided with the aerator (302), the aeration end of the aerator (302) is provided with the aeration pipe (303), the bearing plate (301) is fixedly connected with the upper right side of the artificial cultivation pond main body (1), the other end of the aeration pipe (303) is laid along the inner wall of the artificial cultivation pond main body (1) and is correspondingly arranged with the water supply and drainage groove (101), the inner wall of the artificial cultivation pond main body (1) is correspondingly provided with a protection square pipe (105) with the water supply pipe (203) and the aeration pipe (303), the water supply electromagnetic valve (204) can control the water flow speed according to the swimming condition of the sea croaker, and the water discharge electromagnetic valve (103) can control the water discharge speed according to the conditions of residual baits, dead seedlings, feces and other sundries in the pond.
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