CN107027664B - Method for breeding micropterus salmoides - Google Patents

Method for breeding micropterus salmoides Download PDF

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Publication number
CN107027664B
CN107027664B CN201710364139.8A CN201710364139A CN107027664B CN 107027664 B CN107027664 B CN 107027664B CN 201710364139 A CN201710364139 A CN 201710364139A CN 107027664 B CN107027664 B CN 107027664B
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pond
water
fry
net cage
aquaculture net
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CN107027664A (en
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胡军娜
魏金锁
朱文锦
马娟
卢伯承
郭倩倩
詹世盈
李改清
赵光
陟劲松
李青云
蔡海瑞
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Luohe Yuanhui Marine Fishery Station
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Luohe Yuanhui Marine Fishery Station
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00Receptacles for live fish, e.g. aquaria; Terraria
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish
    • Y02A40/818Alternative feeds for fish, e.g. in aquacultures

Abstract

The invention discloses a method for breeding micropterus salmoides, which comprises the following steps: preparing a culture pond, preparing before stocking, grading a net cage, feeding in grades, managing water quality and fishing. The method for breeding the micropterus salmoides adopts a breeding mode of combining a breeding pond with a breeding net cage, provides a good growth environment for the growth of the micropterus salmoides, provides comprehensive nutrition for the growth of the micropterus salmoides through scientific and reasonable feed proportioning, and adopts a method of graded breeding and gradient feeding, thereby effectively avoiding the mutual killing condition caused by too large individual difference in the breeding process, improving the survival rate of fry and ensuring the economic benefit of farmers.

Description

Method for breeding micropterus salmoides
Technical Field
The invention belongs to the technical field of aquaculture, and particularly relates to a method for culturing micropterus salmoides.
Background
The original-name micropterus salmoides belong to the order Perciformes and the family Sunglasses, are rich in thiamine, protein, riboflavin, nicotinic acid, dietary fiber, vitamin C, vitamin E, vitamin A, cholesterol, carotene, retinol, magnesium, copper, selenium and other nutritional ingredients required by human bodies, can nourish liver, kidney, spleen and stomach, and also have curative effect on cold and cough; in addition, the weever can also treat symptoms such as threatened abortion, hypogalactia and the like, and the weever can tonify the body of a pregnant woman and a lying-in woman after eating the weever, does not cause obesity due to overnutrition, and is a good product for building body, enriching blood, strengthening spleen, tonifying qi and benefiting health.
At present, the breeding mode of the micropterus salmoides has low survival rate, low density, slow growth speed and poor economic benefit, although the micropterus salmoides can naturally lay eggs in a pond with fresh water quality and aquatic plants, the laying rate is low, the fry size is not uniform, the micropterus salmoides are easy to kill by oneself, the breeding density is not well controlled, and the individual specification differentiation is serious. In the culture process, the bait is not comprehensive in nutrition, the iced fresh fish or the trash fish are mainly used as the bait, and the supply of vitamins and minerals is insufficient; in addition, the requirement on water quality in the process of breeding the micropterus salmoides is very strict, and the disease and death of the micropterus salmoides can be caused by pesticide and water quality pollution. For the above reasons, there is a need for improvement of the existing artificial breeding and seedling raising technology of micropterus salmoides to improve the artificial breeding quality.
Disclosure of Invention
The invention provides a method for breeding micropterus salmoides, which solves the problems of low survival rate, low density, slow growth speed and poor economic benefit of the existing method for breeding micropterus salmoides.
The invention provides a method for breeding micropterus salmoides, which comprises the following steps:
step 1, preparation of a culture pond: selecting a water source area with rich water source and fresh and pollution-free water quality, reforming or newly digging a pond at a lower position of the water source area, tamping the bottom of the pond, paving 15-20cm of pseudo-ginseng soil ash, arranging two opposite side walls in the pond into slopes forming an angle of 120-150 degrees with the bottom of the pond, arranging culture net cages at the two opposite side walls close to the bottom of the pond, and arranging an aerator at the two side walls close to the bottom of the pond;
step 2, preparation before stocking: sterilizing the pond after 3 pm on a sunny day in the first half month of fry stocking, standing for one week after sterilization, then filling fresh water into the pond, standing for three days after filling the fresh water, then putting decomposed chicken manure into the pond with the putting amount of 70-90 Kg/mu, starting an aerator in the pond to perform water body dissolved oxygen exchange when water quality is observed to be light green or light brown, and simultaneously adding the sterilized fry into the pond;
the method for disinfecting the fry comprises the following steps: soaking in 3-5% sodium chloride solution for 5-10min to obtain sterilized fish fry;
step 3, grading the net cage: setting the aquaculture net cages in the step 1 into 4-6 levels, setting 2-4 aquaculture net cages in the first level, setting 1 aquaculture net cage in each other level, and putting the fry with different weights in the aquaculture net cages in each level;
step 4, feeding in grades
Step 4.1, feeding before entering the culture net cage: after the fry is cultivated and incubated to grow fry, the fry is flatly swim in fresh water for three days, then the fry is put into a temporary rearing pond with the sodium chloride mass concentration of 1 per thousand, the stocking density of the fry in the temporary rearing pond is 2-3 ten thousand pieces per mu, fresh and live baits are fed in the temporary rearing pond the second day, the daily bait feeding amount is 10-15% of the weight of the fish in the pond, the fry is fed 3-4 times per day, and mixed baits are fed once every day in the first 3 days, wherein the mixed baits are prepared from oxytetracycline, vitamin C1 and the fresh and live baits according to the ratio of 1: 6: 833 mixing the above materials at a certain mass ratio;
after 4-7 days, feeding the fish paste, the complete-value matched buoyancy particles and the fresh and live baits into the temporary rearing pond according to the ratio of 4: 1: 2, the daily bait feeding amount is 10-15% of the weight of the fish in the pond, and the fish is fed for 3-4 times per day;
feeding minced fillet and complete-value-matched floating particles into the temporary rearing pond after 8-10 days according to the ratio of 5: 3, feeding for 3-4 times per day, and feeding the fries into the culture net cages in the pond when the fries grow to 4-6 cm;
wherein the fresh and live bait is one of zooplankton, red worm and rotifer;
step 4.2, culturing the first-level aquaculture net cage: putting the fish fries with the same size into the first-level aquaculture net cages, putting the fish fries into each first-level aquaculture net cage with the density of 200 plus 300 pieces/cage, mixing the formula feed and the fresh bait according to the mass ratio of 4:3, and feeding the fish fries, wherein the daily feeding amount is 10-15% of the weight of the fish fries in the first-level aquaculture net cages; weighing the fry in the first-level aquaculture net cage every 3 days, picking out the fry with the weight more than 20% of the average weight, and feeding the fry into the second-level aquaculture net cage in an isolated manner;
the formula feed comprises the following raw materials in parts by weight: 10-18 parts of fishbone meal, 1-3 parts of lecithin, 1-3 parts of yeast, 3-7 parts of mineral substances, 5-10 parts of bean pulp, 12-15 parts of bovine bone meal, 4-6 parts of camellia seed, 1-3 parts of animal fat, 1-2 parts of compound allicin with the mass concentration of 10% and 0.5-1 part of aquatic medicament binder;
the fresh bait is one or more of small trash fish, animal leftovers and floating granular materials;
step 4.3, culturing the second-level aquaculture net cage to the nth-level aquaculture net cage: the feeding mode and the fry picking mode from the second-level aquaculture net cage to the last-level aquaculture net cage are the same as those of the fries in the first-level aquaculture net cage, the fries in the next-level aquaculture net cage are weighed every 3+2n days, wherein n is the level number of the aquaculture net cage, and when the weight of the fry monomers in the last-level aquaculture net cage reaches 300g, the fry monomers are fished out and placed into a fishpond for free-ranging;
step 5, water quality management
Step 5.1, water is changed frequently: changing water every 3-5 days in the fry period, wherein the water changing amount is more than or equal to 10 percent; changing water every day when the fry grows to the middle and later stages, wherein the water changing amount is more than or equal to 30 percent;
step 5.2, frequently increasing oxygen: starting an aerator, and keeping the dissolved oxygen content of water in the pond to be more than or equal to 2mg/L in the fry period; keeping the dissolved oxygen content of water in the pond to be more than or equal to 5mg/L when the fry grows to the middle and later stages;
step 5.3, putting a microbial preparation: dividing the fry into ponds, feeding feed for twenty days, and putting microbial preparation into the ponds when the water quality is light green, grey blue or blue-green, wherein the putting amount is 1.5-2 kg/mu;
step 6, fishing: when the weight of the micropterus salmoides monomer in the fishpond reaches more than 1.3kg, fishing and selling.
Preferably, the area of the pond is 1-2 mu, the depth is 1.8-2.2m, and the water depth is 1.5-2 m.
Preferably, a water inlet pipe is arranged on one side wall of the pond, a water outlet pipe is arranged on the other opposite side wall of the pond, and the position of the water inlet pipe is higher than that of the water outlet pipe.
Preferably, one end of the water inlet pipe, which is positioned in the pond, is provided with a filter screen.
Preferably, the specification of the aquaculture net cage is 2m × 2m × 1 m.
Preferably, the pond disinfection in the step 2 is performed by dry pond cleaning disinfection or water-carrying disinfection, and the dry pond cleaning disinfection specifically comprises the following steps: pumping water in the pond until the residual water depth in the pond is less than or equal to 10cm, and splashing lime slurry into the pond, wherein the splashing amount is 70-80 kg/mu;
the specific steps of the water-carrying disinfection are as follows: pumping the water in the pond until the residual water depth in the pond is 1m, and splashing quicklime into the pond, wherein the splashing amount is 130-.
Preferably, the lime slurry is a slurry generated by adding water into blocky quick lime to react.
Preferably, the pH value of the pond water body after disinfection in the step 2 is 6.5-8.2.
Preferably, the microbial preparation is one of photosynthetic bacteria and EM bacteria.
Preferably, the aquatic medicament adhesive is one of wheat middling, bentonite and starch.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, a natural water body purification system is formed by designing the structure of the culture pond, and the culture net cages are combined for screening and culturing, so that the fish pond is disinfected and supplied with oxygen regularly, a good growth environment is provided for the growth of the micropterus salmoides, the occurrence of plant diseases and insect pests is avoided, the growth speed and immunity of the micropterus salmoides can be obviously improved, and the yield and quality of the micropterus salmoides are improved.
2) The invention provides comprehensive nutrition for the growth of the micropterus salmoides through scientific and reasonable feed ratio, and effectively avoids mutual killing caused by too large individual difference in the feeding process by adopting a method of graded breeding and gradient feeding, thereby improving the survival rate of the fry and ensuring the economic benefit of farmers.
Detailed Description
In order to make the technical solutions of the present invention better understood and enable those skilled in the art to practice the present invention, the following embodiments are further described, but the present invention is not limited to the following embodiments.
The experimental methods described in the examples of the present invention are all conventional methods unless otherwise specified.
Example 1
A method for breeding micropterus salmoides comprises the following steps:
step 1, preparation of a culture pond: selecting a water source area with abundant water sources and fresh and pollution-free water quality, reforming or newly digging a pond with the area of 1 mu and the depth of 1.8m at a lower part of the water source area, tamping the bottom of the pond, paving 15cm of pseudo-ginseng ash soil, arranging two opposite side walls in the pond into slopes which form 120 degrees with the bottom of the pond, arranging two other opposite side walls to be vertical to the bottom of the pond, arranging culture net cages with the specification of 2m multiplied by 1m at two side walls which are close to and vertical to the bottom of the pond, and arranging an aerator at two side walls which are close to and vertical to the bottom of the pond;
in addition, a water inlet pipe is arranged on one side wall of the pond, a filter screen is arranged at one end of the water inlet pipe, which is positioned in the pond, a water outlet pipe is arranged on the other opposite side wall, and the position of the water inlet pipe is higher than that of the water outlet pipe;
step 2, preparation before stocking: in the first half month of fish fry stocking, selecting 3 pm on a sunny day, then cleaning and disinfecting the pond by adopting a dry method, namely pumping water in the pond to the residual water depth of 5cm in the pond, splashing lime slurry into the pond, wherein the splashing amount is 70 Kg/mu, standing for one week after the splashing is finished, then injecting fresh water into the pond until the water depth is 1.5m, standing for three days after the fresh water is injected, then adding rotten chicken manure into the pond, wherein the adding amount is 70 Kg/mu, when water quality is observed to be slightly green or slightly brown, starting an aerator in the pond to perform water body dissolved oxygen exchange, and adding disinfected fish fries into the pond, wherein the pH value of the water body in the pond is 7.5;
the method for disinfecting the fry comprises the following steps: soaking in 3% sodium chloride solution for 5min to obtain sterilized fry;
wherein the lime slurry is a slurry generated by adding water into blocky quicklime for reaction;
step 3, grading the net cage: setting the aquaculture net cages in the step 1 into 5 levels, setting the aquaculture net cages of the first level into 3, setting the aquaculture net cages of the other levels into 1, and setting the aquaculture net cages of all levels to be used for putting in fish fries with different weights;
step 4, feeding in grades
Step 4.1, feeding before entering the culture net cage: after the fries are cultured and hatched out the fries, the fries are flatly swim in fresh water for three days, then the fries are put into a temporary culture pond with the sodium chloride mass concentration of 1 per thousand, the fry stocking density in the temporary culture pond is 2 ten thousand pieces/mu, fresh and live baits are fed in the temporary culture pond for the second day, the daily bait feeding amount is 13 percent of the weight of the fries in the pond, 3 times of feeding are carried out every day, in the first 3 days, mixed baits are fed once every day, and the mixed baits are prepared by mixing the oxytetracycline, the vitamin C1 and the fresh and live baits according to the proportion of 1: 6: 833 mixing the above materials at a certain mass ratio;
after 5 days, feeding the fish paste, the complete-value matching buoyancy particles and the fresh and live baits into the temporary rearing pond according to the ratio of 4: 1: 2, the daily bait feeding amount is 13 percent of the weight of the fish in the pond, and the fish is fed for 3 times every day;
feeding minced fillet and complete-value-matched buoyancy particles into the temporary rearing pond after 9 days according to the ratio of 5: 3, feeding 3 times a day, and distributing the fry into a culture net cage in the pond for culture when the fry grows to 5 cm;
wherein the fresh and live bait is one of zooplankton, red worm and rotifer;
step 4.2, culturing the first-level aquaculture net cage: putting the fries with the same size into the first-level aquaculture net cages, wherein the putting density of the fries in each first-level aquaculture net cage is 250 tails per cage, then mixing the formula feed and the fresh bait according to the mass ratio of 4:3, and feeding the fries, wherein the daily feeding amount is 15% of the weight of the fries in the first-level aquaculture net cages; weighing the fry in the first-level aquaculture net cage every 3 days, picking out the fry with the weight more than 20% of the average weight, and feeding the fry into the second-level aquaculture net cage in an isolated manner;
the formula feed comprises the following raw materials in parts by weight: 15 parts of fishbone powder, 2 parts of lecithin, 1 part of yeast, 5 parts of mineral substances, 8 parts of soybean meal, 13 parts of bovine bone powder, 5 parts of camellia seed, 2 parts of animal fat, 1 part of compound allicin with the mass concentration of 10% and 1 part of starch;
the fresh bait is one or more of small trash fish, animal leftovers and floating granular materials;
step 4.2, culturing the second-level aquaculture net cage to the nth-level aquaculture net cage: the feeding mode and the fry picking mode from the second-level aquaculture net cage to the last-level aquaculture net cage are the same as those of the fries in the first-level aquaculture net cage, the fries in the next-level aquaculture net cage are weighed every 3+2n days, wherein n is the level number of the aquaculture net cage, and when the weight of the fry monomers in the last-level aquaculture net cage reaches 300g, the fry monomers are fished out and placed into a fishpond for free-ranging;
step 5, water quality management
Step 5.1, water is changed frequently: changing water every 3 days in the fry period, wherein the water changing amount is 10 percent; changing water every day when the fry grows to the middle and later stages, wherein the water changing amount is 35 percent;
step 5.2, frequently increasing oxygen: starting an aerator, and keeping the dissolved oxygen content of water in the pond to be 2mg/L in the fry period; keeping the dissolved oxygen content of water in the pond to be 5mg/L when the fry grows to the middle and later stages;
step 5.3, putting a microbial preparation: dividing the fry into ponds, feeding feed for twenty days, and putting photosynthetic bacteria into the ponds when the water quality is light green, gray blue or blue-green, wherein the application amount is 1.5 kg/mu;
step 6, fishing: when the weight of the micropterus salmoides monomer in the fishpond reaches 1.3kg, fishing and selling.
Example 2
A method for breeding micropterus salmoides comprises the following steps:
step 1, preparation of a culture pond: selecting a water source area with abundant water sources and fresh and pollution-free water quality, reforming or newly digging a pond with the area of 1.5 mu and the depth of 2m at a lower part of the water source area, tamping the bottom of the pond, paving 18cm of pseudo-ginseng ash soil, arranging two opposite side walls in the pond into a slope forming 130 degrees with the bottom of the pond, arranging two other opposite side walls to be vertical to the bottom of the pond, arranging culture net cages with the specification of 2m multiplied by 1m at two side walls close to the bottom of the pond, and arranging an aerator at two side walls close to the bottom of the pond;
in addition, a water inlet pipe is arranged on one side wall of the pond, a filter screen is arranged at one end of the water inlet pipe, which is positioned in the pond, a water outlet pipe is arranged on the other opposite side wall, and the position of the water inlet pipe is higher than that of the water outlet pipe;
step 2, preparation before stocking: in the first half month of fish fry stocking, selecting 3 pm on a sunny day, then, carrying out water disinfection, namely pumping water in the pond out until the residual water depth in the pond is 1m, sprinkling quicklime into the pond, wherein the sprinkling amount is 130 Kg/mu, standing for one week after the sprinkling is finished, then, injecting fresh water into the pond until the water depth is 1.8m, standing for three days after the fresh water is injected, then, putting rotten chicken manure into the pond, wherein the adding amount is 80 Kg/mu, when water quality is observed to be slightly green or slightly brown, starting an aerator in the pond to carry out water body dissolved oxygen exchange, and simultaneously, adding disinfected fish fries into the pond, wherein the pH value of the water body in the pond is 8.2;
the method for disinfecting the fry comprises the following steps: soaking in 4% sodium chloride solution for 8min to obtain sterilized fry;
wherein the lime slurry is a slurry generated by adding water into blocky quicklime for reaction;
step 3, grading the net cage: setting the aquaculture net cages in the step 1 into 6 levels, setting the aquaculture net cages of the first level into 4, setting the aquaculture net cages of the other levels into 1, and putting the fry with different weights into the aquaculture net cages of the other levels;
step 4, feeding in grades
Step 4.1, feeding before entering the culture net cage: after the fry is cultivated and hatched out, the fry is flatly swim in fresh water for three days, then the fry is put into a temporary rearing pond with the sodium chloride mass concentration of 1 per thousand, the stocking density of the fry in the temporary rearing pond is 2.5 thousand pieces per mu, fresh and live baits are fed in the temporary rearing pond for the second day, the daily bait feeding amount is 15 percent of the weight of the fish in the pond, the fish is fed for 4 times every day, and in the first 3 days, mixed baits are fed once every day, and the mixed baits are prepared from the soil mildew poison, vitamin C1 and the fresh and live baits according to the proportion of 1: 6: 833 mixing the above materials at a certain mass ratio;
feeding the fish paste, the complete-value matching buoyancy particles and the fresh and live baits into the temporary rearing pond after 7 days according to the ratio of 4: 1: 2, the daily bait feeding amount is 15 percent of the weight of the fish in the pond, and the fish is fed for 4 times every day;
feeding minced fillet and complete-value-matched buoyancy particles into the temporary rearing pond after 10 days according to the ratio of 5: 3, feeding 4 times a day, and distributing the fries into the culture net cages in the pond for feeding when the fries grow to 6 cm;
wherein the fresh and live bait is one of zooplankton, red worm and rotifer;
step 4.2, culturing the first-level aquaculture net cage: putting the fries with the same size into the first-level aquaculture net cages, wherein the putting density of the fries in each first-level aquaculture net cage is 300 tails/cage, then mixing the formula feed and the fresh bait according to the mass ratio of 4:3, and feeding the fries, wherein the daily feeding amount is 15% of the weight of the fries in the first-level aquaculture net cages; weighing the fry in the first-level aquaculture net cage every 3 days, picking out the fry with the weight more than 20% of the average weight, and feeding the fry into the second-level aquaculture net cage in an isolated manner;
the formula feed comprises the following raw materials in parts by weight: 18 parts of fishbone meal, 1 part of lecithin, 3 parts of yeast, 3 parts of mineral substances, 10 parts of soybean meal, 12 parts of bovine bone meal, 6 parts of camellia seeds, 1 part of animal fat, 2 parts of compound allicin with the mass concentration of 10% and 0.5 part of wheat middling;
the fresh bait is one or more of small trash fish, animal leftovers and floating granular materials;
step 4.2, culturing the second-level aquaculture net cage to the nth-level aquaculture net cage: the feeding mode and the fry picking mode from the second-level aquaculture net cage to the last-level aquaculture net cage are the same as those of the fries in the first-level aquaculture net cage, the fries in the next-level aquaculture net cage are weighed every 3+2n days, wherein n is the level number of the aquaculture net cage, and when the weight of the fry monomers in the last-level aquaculture net cage reaches 300g, the fry monomers are fished out and placed into a fishpond for free-ranging;
step 5, water quality management
Step 5.1, water is changed frequently: changing water every 4 days in the fry period, wherein the water changing amount is 12 percent; changing water every day when the fry grows to the middle and later stages, wherein the water changing amount is 40 percent;
step 5.2, frequently increasing oxygen: starting an aerator, and keeping the dissolved oxygen content of water in the pond to be 2.5mg/L in the fry period; keeping the dissolved oxygen content of water in the pond at 6mg/L when the fry grows to the middle and later stages;
step 5.3, putting a microbial preparation: after the fry are separated from the pond and fed with feed for twenty days, when the water quality is observed to be light green, grayish blue or blue-green, EM bacteria are put into the pond, and the application amount is 2 kg/mu;
step 6, fishing: when the weight of the micropterus salmoides monomer in the fishpond reaches 1.5kg, fishing and selling.
The fish pond structure is designed to form natural water body purification circulation, screening culture is performed by combining the culture net cages, and the fish pond is periodically disinfected and supplied with oxygen; the scientific and reasonable feed proportioning provides comprehensive nutrition and a high-quality growth environment for the growth of the micropterus salmoides, effectively reduces the dosage of chemical drugs and artificial feed, avoids the occurrence of plant diseases and insect pests, can obviously improve the growth speed and immunity of the micropterus salmoides, and improves the yield and quality of the micropterus salmoides; the adoption of the method of graded cultivation and gradient feeding can effectively avoid mutual killing caused by too large individual difference in the feeding process, improve the survival rate of seedling cultivation and ensure the economic benefit of farmers.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. The method for breeding the micropterus salmoides is characterized by comprising the following steps of:
step 1, preparation of a culture pond: selecting a water source area with rich water source and fresh and pollution-free water quality, reforming or newly digging a pond at a lower position of the water source area, tamping the bottom of the pond, paving 15-20cm thick pseudo-ginseng soil ash, arranging two opposite side walls in the pond into slopes forming an angle of 120-150 degrees with the bottom of the pond, arranging culture net cages at the two opposite side walls close to the bottom of the pond, and arranging an aerator at the two side walls close to the bottom of the pond;
step 2, preparation before stocking: sterilizing the pond after 3 pm on a sunny day in the first half month of fry stocking, standing for one week after sterilization, then filling fresh water into the pond, standing for three days after filling the fresh water, then putting decomposed chicken manure into the pond with the putting amount of 70-90 Kg/mu, starting an aerator in the pond to perform water body dissolved oxygen exchange when water quality is observed to be light green or light brown, and simultaneously adding the sterilized fry into the pond;
the method for disinfecting the fry comprises the following steps: soaking in 3-5% sodium chloride solution for 5-10min to obtain sterilized fish fry;
step 3, grading the net cage: setting the aquaculture net cages in the step 1 into 4-6 levels, setting 2-4 aquaculture net cages in the first level, setting 1 aquaculture net cage in each other level, and putting the fry with different weights in the aquaculture net cages in each level;
step 4, feeding in grades
Step 4.1, feeding before entering the culture net cage: after the fry is cultivated and incubated to grow fry, the fry is flatly swim in fresh water for three days, then the fry is put into a temporary rearing pond with the sodium chloride mass concentration of 1 per thousand, the stocking density of the fry in the temporary rearing pond is 2-3 ten thousand pieces per mu, fresh and live baits are fed in the temporary rearing pond the second day, the daily bait feeding amount is 10-15% of the weight of the fish in the pond, the fry is fed 3-4 times per day, and mixed baits are fed once every day in the first 3 days, wherein the mixed baits are prepared from oxytetracycline, vitamin C1 and the fresh and live baits according to the ratio of 1: 6: 833 mixing the above materials at a certain mass ratio;
after 4-7 days, feeding the fish paste, the complete formula floating pellet feed and the fresh and live baits into the temporary rearing pond according to the ratio of 4: 1: 2, the daily bait feeding amount is 10-15% of the weight of the fish in the pond, and the fish is fed for 3-4 times per day;
feeding minced fillet and complete compound floating pellet feed into the temporary rearing pond after 8-10 days according to the ratio of 5: 3, feeding for 3-4 times per day, and feeding the fries into the culture net cages in the pond when the fries grow to 4-6 cm;
wherein the fresh and live bait is one of zooplankton, red worm and rotifer;
step 4.2, culturing the first-level aquaculture net cage: putting the fish fries with the same size into the first-level aquaculture net cages, putting the fish fries into each first-level aquaculture net cage with the density of 200 plus 300 pieces/cage, mixing the formula feed and the fresh bait according to the mass ratio of 4:3, and feeding the fish fries, wherein the daily feeding amount is 10-15% of the weight of the fish fries in the first-level aquaculture net cages; weighing the fry in the first-level aquaculture net cage every 3 days, picking out the fry with the weight more than 20% of the average weight, and feeding the fry into the second-level aquaculture net cage in an isolated manner;
the formula feed comprises the following raw materials in parts by weight: 10-18 parts of fishbone meal, 1-3 parts of lecithin, 1-3 parts of yeast, 3-7 parts of mineral substances, 5-10 parts of soybean meal, 12-15 parts of bovine bone meal, 4-6 parts of camellia seed, 1-3 parts of animal fat, 1-2 parts of compound allicin with the mass concentration of 10% and 0.5-1 part of aquatic medicament adhesive;
the fresh bait is one or more of small trash fish, animal leftovers and floating granular materials;
step 4.3, culturing the second-level aquaculture net cage to the nth-level aquaculture net cage: the feeding mode and the fry picking mode from the second-level aquaculture net cage to the last-level aquaculture net cage are the same as those of the fries in the first-level aquaculture net cage, the fries in the next-level aquaculture net cage are weighed every 3+2n days, wherein n is the level number of the aquaculture net cage, and when the weight of the fry monomers in the last-level aquaculture net cage reaches 300g, the fry monomers are fished out and placed into a fishpond for free-ranging;
step 5, water quality management
Step 5.1, water is changed frequently: changing water every 3-5 days in the fry period, wherein the water changing amount is more than or equal to 10 percent; changing water every day when the fry grows to the middle and later stages, wherein the water changing amount is more than or equal to 30 percent;
step 5.2, frequently increasing oxygen: starting an aerator, and keeping the dissolved oxygen content of water in the pond to be more than or equal to 2mg/L in the fry period; keeping the dissolved oxygen content of water in the pond to be more than or equal to 5mg/L when the fry grows to the middle and later stages;
step 5.3, putting a microbial preparation: after the fry are graded and the feed is fed for twenty days, when the water quality is observed to be light green, grayish blue or blue-green, the microbial preparation is put into the pond, and the putting amount is 1.5-2 kg/mu;
step 6, fishing: when the weight of the micropterus salmoides monomer in the fishpond reaches more than 1.3kg, fishing and selling.
2. The method of claim 1, wherein the pond has an area of 1-2 mu, a depth of 1.8-2.2m, and a water depth of 1.5-2 m.
3. The method of claim 1, wherein a water inlet pipe is provided on one side wall of the pond, a water outlet pipe is provided on the opposite side wall of the pond, and the water inlet pipe is positioned higher than the water outlet pipe.
4. The method for culturing micropterus salmoides according to claim 3, wherein the end of the water inlet pipe positioned in the pond is provided with a filter screen.
5. The method of claim 1, wherein the size of the culture net cage is 2m × 2m × 1 m.
6. The method for culturing micropterus salmoides according to claim 1, wherein the pond disinfection in the step 2 is implemented by dry pond cleaning disinfection or disinfection with water, and the dry pond cleaning disinfection comprises the following specific steps: pumping water in the pond until the residual water depth in the pond is less than or equal to 10cm, and splashing lime slurry into the pond, wherein the splashing amount is 70-80 kg/mu;
the specific steps of the water-carrying disinfection are as follows: pumping the water in the pond until the residual water depth in the pond is 1m, and splashing quicklime into the pond, wherein the splashing amount is 130-.
7. The method for culturing micropterus salmoides according to claim 6, wherein the lime slurry is a slurry produced by adding water into blocky quick lime for reaction.
8. The method of claim 1, wherein the pH of the pond water disinfected in step 2 is between 6.5 and 8.2.
9. The method of claim 1, wherein the microbial agent is one of photosynthetic bacteria and EM bacteria.
10. The method of claim 1, wherein the aquatic pharmaceutical adhesive is one of wheat middling, bentonite, and starch.
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CN108056049B (en) * 2017-11-27 2020-12-08 苏州金澄福渔业科技有限公司 Autumn breeding method for micropterus salmoides
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