CN111194703A - Erythroculter ilishaeformis fry breeding method - Google Patents

Erythroculter ilishaeformis fry breeding method Download PDF

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Publication number
CN111194703A
CN111194703A CN201811382245.XA CN201811382245A CN111194703A CN 111194703 A CN111194703 A CN 111194703A CN 201811382245 A CN201811382245 A CN 201811382245A CN 111194703 A CN111194703 A CN 111194703A
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parts
pond
water
days
weight
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林海春
曾明华
邱仁杰
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Guangdong Huihai Agricultural And Animal Husbandry Science And Technology Group Co ltd
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Guangdong Huihai Agricultural And Animal Husbandry Science And Technology Group Co ltd
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Priority to CN201811382245.XA priority Critical patent/CN111194703A/en
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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
    • A01K61/10Culture of aquatic animals 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

Abstract

The invention relates to the technical field of aquaculture, and discloses a culter ilishaeformis fry breeding method which comprises the steps of pond sunning, pond cleaning and impurity removal, water culture, fry placing, feeding, daily management, pond division and the like, the survival rate of fries can be obviously improved, and the cost of fry breeding is greatly reduced.

Description

Erythroculter ilishaeformis fry breeding method
Technical Field
The invention relates to the technical field of aquatic product culture, in particular to a culter ilishaeformis fry breeding method.
Background
The erythroculter ilishaeformis, also called whitefish, belongs to Cyprinaceae, Erythroculter subfamily and Erythroculter in classification, is one of high-quality economic fishes, and due to excessive fishing, the natural resource quantity of the erythroculter ilishaeformis is sharply reduced, the market demand is more vigorous, the price is high, the large-scale artificial propagation is successful at present, and the breeding enthusiasm of breeding households is high.
Through the development of many years, the culter ilishaeformis breeding area is continuously enlarged, the technical level is continuously improved, the pond head price returns to rationality, the breeding profit space is reduced, and the breeding cost is reduced, wherein the fry price is kept high for a long time, the survival rate is often low and is less than 50%, the quality is poor, the transportation is not resistant, the breeding cost can be effectively reduced by improving the seedling survival rate and the fry quality, and therefore, the method for breeding the culter ilishaeformis fries is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the method for cultivating the Erythroculter ilishaeformis fries, which has the advantages of high fry survival rate, low cultivation cost and the like.
(II) technical scheme
In order to realize the purpose of high survival rate of the fry, the invention provides the following technical scheme:
the method for cultivating the erythroculter ilishaeformis fries comprises the following steps:
(1) and (3) pond sunning: selecting a pond with the depth of 2.0-2.5m, draining the pond water, removing sludge if the thickness of sludge at the bottom of the pond exceeds 30cm, enabling the thickness of the sludge to be 10-20cm, and airing for 20-30 days;
(2) cleaning a pond and removing impurities: 5-7 days before seedling placement, 5-10cm of water is fed in, the bottom of the pond is submerged, and 10-15Kg of tea cakes are used for killing pests per mu;
(3) water culture: 3 days before putting the seedlings, feeding water, filtering the water inlet by using a bolting silk with the mesh of more than 120 meshes to prevent roes and harmful organisms from entering the pond until the water depth is 50-60cm, applying organic acid to detoxify, and bundling green plants into a group to be used as green manure to be soaked in water; applying 10-20Kg of fermented manure and/or 2-3Kg of fermented feed and/or 0.5-1.5Kg of amino acid manure water paste per mu, packaging the fermented manure and/or the fermented feed by using woven bags, opening holes on the woven bags, and stacking the woven bags at the corners of the pond;
(4) seedling releasing: putting the oxygen bag filled with the fish fries into the pond at an air inlet of the pond at about 10:00 am in fine days, opening the oxygen bag when the temperature difference between the water temperature in the oxygen bag and the water temperature in the pond is less than 2 ℃, adding pond water, then pouring the fish fries in the oxygen bag into the pond from the water surface, and putting 40-60 ten thousand fish fries per mu;
(5) feeding: the seedlings are not required to be fed for one week before the seedlings are placed; feeding the opening feed 3-4 times along the pond edge every day on the 8 th day, wherein the feeding amount is 8-12% of the weight of the fish every day, and feeding the fermented feed for three consecutive days every week on the 8 th day;
(6) daily management: the pond is patrolled once in the morning and evening every day, frog eggs are fished along the sides of the pond, an aerator is started at 12:00-14:00 and 1:00-5:00 in the morning in sunny days, the planktonic biomass is observed, fertilizer is supplemented in time or fermented manure stacked at the pond corners is fished out, and when green plants bundled into a group and soaked in water are completely blacked out, the fermented manure is fished out in time; after the feeding of the opening material is started, adding water of 5-10cm every day until the water depth is about 1.2m meters; killing insects for the first time 10-12 days after seedling placement, sterilizing the insects for the second day after the first time, and regularly microscopic examining the parasites;
(7) dividing ponds: dividing the fish fry into ponds when the body length of the fish fry reaches 2-3cm, pulling the fish fry to a net for hoarding for half an hour for discharging 3 days before dividing the ponds, and stopping feeding for one day before dividing the ponds; sprinkling anti-stress drugs when dividing the pond, pulling the fish fries up to be stocked in the net cages for about one hour, transporting, stocking 2.5-3 thousands of fish fries in each net cage, and moving an aerator to the vicinity of the net cages for aeration in the stocking process.
Preferably, in the step (3), the green plants comprise the broad bean seedlings and the rape stems, and the weight ratio of the broad bean seedlings to the rape stems is 1: 1.
preferably, in the step (4), the oxygen increasing machine is started 1 hour before the seedlings are put, and the operation is continued until the time is 15:00-16:00 in the afternoon; and sprinkling glucose and electrolytic multi-dimensional water in the whole pool 0.5 hour before putting the seedlings.
Preferably, in the step (4), before seedling releasing, a seedling releasing test is performed in a predetermined area, and the survival condition of the seedlings is observed.
Preferably, the opening material comprises the following components in parts by weight: 10-20 parts of Peruvian super steam fish meal, 10-15 parts of peanut bran, 20-40 parts of soybean meal, 50-100 parts of strong flour, 5-7 parts of brown sugar, 8-10 parts of alfalfa meal, 0.02-0.05 part of allicin, 3-6 parts of wheat middling, 3-5 parts of spirulina powder, 5-10 parts of corn protein powder, 1-2 parts of beer yeast, 0.08-0.12 part of mildew preventive, 2-4 parts of lecithin, 10-15 parts of edible soybean oil and 3-5 parts of premix; and the preparation process of the opening material comprises the following steps: weighing the raw materials in parts by weight; mixing all the raw materials, stacking at 22-26 deg.C, primarily fermenting for 3-5 days, stirring and mixing the primarily fermented raw materials again, and fermenting at 22-26 deg.C in dry and dark place for one week.
Preferably, the premix comprises the following components in parts by weight: 0.1 to 0.5 portion of monocalcium phosphate, 0.02 to 0.05 portion of ethoxyquinoline, 0.08 to 0.1 portion of choline chloride, 0.5 to 0.8 portion of compound multi-vitamin, 0.01 to 0.02 portion of cholesterol, 0.02 to 0.05 portion of glucan, 0.1 to 0.15 portion of L-carnitine, 0.15 to 0.25 portion of ferric sulfate monohydrate, 0.01 to 0.02 portion of magnesium acetate, 0.01 to 0.02 portion of L-alanine, 0.05 to 0.1 portion of salt and 0.1 to 0.3 portion of cellulose.
Preferably, in the steps (3) and (5), the fermented feed comprises the following components in parts by weight: 20-30 parts of opening material, 5-10 parts of composite strain and 10-20 parts of brown sugar, and the preparation process of the fermented feed comprises the following steps: weighing the raw materials according to the weight parts, loading the opening material and water into a barrel according to the weight ratio of 1:5, adding the composite strain and brown sugar, uniformly stirring, sealing and fermenting for 5-7 days, and using when the pH value of the fermentation liquor is 4.
Preferably, the composite strain comprises the following components in parts by weight: 0.2-0.25 part of bacillus subtilis, 0.2-0.25 part of bacillus licheniformis, 0.2-0.3 part of lactic acid bacteria and 0.15-0.25 part of microzyme.
Preferably, in the step (4), aquatic plants are planted in the pond within one week after the seedlings are released, and the planting area is 20% -25% of the total area of the pond.
Preferably, in step (6), live water is introduced into the pond periodically and surface algae and aquatic weeds are salvaged periodically.
(III) advantageous effects
Compared with the prior art, the invention provides a culter ilishaeformis fry breeding method which comprises the following steps
Has the advantages that:
according to the method for cultivating the erythroculter ilishaeformis fries, the harm of mixed fish bacteria to the fries is removed through pond drying, the healthy living growth environment of the fries is guaranteed, the survival rate of the fries is improved to more than 90%, and the cost for cultivating the fries is greatly reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the method for cultivating the erythroculter ilishaeformis fries in the embodiment comprises the following steps:
(1) and (3) pond sunning: selecting a pond with the area of about 20 mu and the depth of 2.0-2.5m, draining the water in the pond, if the sludge at the bottom of the pond exceeds 30cm in thickness, removing the sludge to enable the sludge to be 10-20cm in thickness, and drying the pond for 20-30 days until 2-3cm wide cracks appear and no dark black sludge exists, so that the organic matters at the bottom of the pond are completely oxidized;
(2) cleaning a pond and removing impurities: 5-7 days before seedling placement, 5-10cm of water is fed in and submerges the bottom of the pond, and tea cakes are used per mu
Killing harmful organisms (including wild trash fish and enemy organisms) by 10-15Kg, and killing various parasites, zooplankton and aquatic insects by broad-spectrum pesticides such as Baibixiao, Jiek and the like;
(3) water culture: 3 days before putting seedlings, water is fed, a water inlet is filtered by a bolting silk with the mesh of more than 120, roes and harmful organisms are prevented from entering the pond until the water depth is 50-60cm, organic acid (one or more of malic acid, sorbic acid and tartaric acid) is applied for detoxification, green plants are bundled into a cluster and soaked in water as green manure, the green plants comprise broad bean seedlings and rape stems, the weight ratio of the broad bean seedlings to the rape stems is 1: 1; applying 10-20Kg (preferably 15Kg) of fermented manure per mu and/or applying 2-3Kg (preferably 2.5Kg) of fermented feed per mu and/or applying 0.5-1.5Kg (preferably 1.0Kg) of amino acid manure water paste per mu, wherein the fermented manure and/or the fermented feed are packaged by woven bags, and the woven bags are provided with holes and stacked at pond corners, so that the fermented manure and/or the fermented feed therein is slowly released into water through the holes; preferably, the opening density of the woven bag is 1 per square centimeter, and the diameter of the hole is 2-3 mm; therefore, the organic acid can play a good role in degrading and improving the aging, heating and water temperature stratification of the aquaculture pond and the overproof mineral substances caused by the geographical environment, and can quickly eliminate poisoning phenomena such as reduced ingestion, slow growth and the like of fishes and shrimps caused by serious water pollution, improper medication, residual chlorine, heavy metals and antibiotic residues, thereby having obvious improvement effect; meanwhile, the use of the green manure can reduce the use of chemical fertilizers, can be naturally degraded and can be used as a food source of the fry, so that the water body pollution is prevented;
(4) seedling releasing: in the step (4), starting the aerator 1 hour before seedling release, and continuing to 15:00-16:00 in the afternoon to exchange water bodies of the upper layer and the lower layer, so that dissolved oxygen of the bottom layer is increased, and bubble disease can be effectively prevented; putting an oxygen bag containing the fry into the pond at an air inlet of the pond at about 10:00 am in fine days, opening the oxygen bag when the temperature difference between the water temperature in the oxygen bag and the water temperature in the pond is less than 2 ℃, adding pond water, then pouring the fry in the oxygen bag into the pond from the water surface, splashing glucose and electrolytic multi-dimensional water in the whole pond 0.5 hour before the fry is put, and discharging 40-60 thousands of flowers (preferably 50 thousands of flowers) per mu; in addition, in order to accurately master the throwing density, a seedling throwing test can be carried out in a preset area before seedling throwing, and the survival condition of the seedlings is observed so as to determine the seedling throwing density; planting aquatic plants (including one or more of water hyacinth, water peanuts, water lettuce and sow thistle) in the pond within one week after the seedlings are put in the pond, wherein the planting area is 20% -25% of the total area of the pond, so that the temperature of the water body is reduced, the water body is purified, and plant baits are provided;
(5) feeding: the seedlings are not required to be fed for one week before the seedlings are placed; feeding the opening feed 3-4 times along the pond edge every day beginning on day 8, wherein the feeding amount is 8-12% (preferably 10%) of the weight of the fish every day, and feeding the fermented feed for three consecutive days every week beginning on day 8;
(6) daily management: the pond is patrolled once every morning and evening, frog eggs are fished along the sides of the pond, an aerator is started at 12:00-14:00 and 1:00-5:00 in the morning in sunny days, the planktonic biomass is observed, the fermented manure stacked at the corners of the pond is timely supplemented or fished out and turned over, and when green plants bundled and soaked in water are completely blackened, the fermented manure is timely fished out to prevent rotting, sinking and damaging the water; after the feeding of the opening material is started, adding water of 5-10cm every day until the water depth is about 1.2m meters; killing insects for the first time 10-12 days after seedling placement, sterilizing the insects for the second day after the first time, regularly microscopic examining the parasites, timely knowing the insect situations of parasites such as the Trichodina, and simultaneously regularly introducing live water into the pond and regularly fishing algae on the water surface and weeds on the water;
(7) dividing ponds: after 25-30 days of cultivation, dividing the fish fry into ponds when the body length of the fish fry reaches 2-3cm, pulling the fish fry into a net for hoarding for half an hour for discharging 3 days before dividing the ponds, and stopping feeding for one day before dividing the ponds; when the fishpond is divided, anti-stress medicines (including high-stability Vc, sprinkled ginger and the like) are sprinkled firstly, then the fry are pulled up to be stocked in the net cages for about one hour and then transported, 2.5-3 thousands (preferably 3 thousands) of fries are stocked in each net cage, and in the stocking process, the aerator is moved to the position near the net cages for aeration.
In this embodiment, the opening material includes, by weight: 10 parts of Peruvian super steam fish meal, 10 parts of peanut bran, 25 parts of soybean meal, 80 parts of strong flour, 5 parts of brown sugar, 8 parts of alfalfa meal, 0.02 part of allicin, 5 parts of wheat middling, 4 parts of spirulina powder, 10 parts of corn protein powder, 1.5 parts of beer yeast, 0.08 part of mildew preventive, 3 parts of lecithin, 12 parts of edible soybean oil and 3 parts of premix; and the preparation process of the opening material comprises the following steps: weighing the raw materials in parts by weight; mixing all the raw materials, stacking at 22-26 deg.C, primarily fermenting for 3-5 days, stirring and mixing the primarily fermented raw materials again, and fermenting at 22-26 deg.C in dry and dark place for one week.
Further, the premix comprises the following components in parts by weight: 0.1 part of monocalcium phosphate, 0.02 part of ethoxyquinoline, 0.085 part of choline chloride, 0.6 part of compound multi-vitamin, 0.02 part of cholesterol, 0.05 part of glucan, 0.12 part of L-carnitine, 0.2 part of ferric sulfate monohydrate, 0.01 part of magnesium acetate, 0.02 part of L-alanine, 0.08 part of salt and 0.2 part of cellulose.
In the steps (3) and (5), the fermented feed comprises the following components in parts by weight: 20 parts of opening material, 8 parts of composite strain and 15 parts of brown sugar, and the preparation process of the fermented feed comprises the following steps: weighing the raw materials according to the weight parts, loading the opening material and water into a barrel according to the weight ratio of 1:5, adding the composite strain and brown sugar, uniformly stirring, sealing and fermenting for 5-7 days, and using when the pH value of the fermentation liquor is 4; preferably, the composite strain comprises the following components in parts by weight: 0.2 part of bacillus subtilis, 0.25 part of bacillus licheniformis, 0.25 part of lactic acid bacteria and 0.18 part of microzyme.
Example two:
the difference between the embodiment and the first embodiment is only that, in the embodiment, the opening material comprises, by weight: the feed comprises, by weight, 20 parts of Peru super steamed fish meal, 15 parts of peanut bran, 30 parts of soybean meal, 55 parts of high gluten flour, 7 parts of brown sugar, 9 parts of alfalfa meal, 0.03 part of allicin, 4 parts of wheat middling, 5 parts of spirulina powder, 8 parts of corn protein powder, 1 part of beer yeast, 0.12 part of a mildew preventive, 4 parts of lecithin, 15 parts of edible soybean oil and 4 parts of a premix.
The premix comprises the following components in parts by weight: 0.5 part of monocalcium phosphate, 0.03 part of ethoxyquinoline, 0.09 part of choline chloride, 0.8 part of compound multi-vitamin, 0.01 part of cholesterol, 0.03 part of glucan, 0.14 part of L-carnitine, 0.15 part of ferric sulfate monohydrate, 0.02 part of magnesium acetate, 0.015 part of L-alanine, 0.1 part of salt and 0.3 part of cellulose.
In the steps (3) and (5), the fermented feed comprises the following components in parts by weight: 30 parts of opening material, 10 parts of composite strain and 12 parts of brown sugar, wherein the composite strain comprises the following components in parts by weight: 0.24 part of bacillus subtilis, 0.22 part of bacillus licheniformis, 0.28 part of lactic acid bacteria and 0.25 part of microzyme.
Example three:
the difference between the embodiment and the first embodiment is only that, in the embodiment, the opening material comprises, by weight: 15 parts of Peruvian super steamed fish meal, 12 parts of peanut bran, 25 parts of soybean meal, 85 parts of high gluten flour, 6.5 parts of brown sugar, 9 parts of alfalfa meal, 0.04 part of allicin, 5 parts of wheat middling, 4 parts of spirulina powder, 8 parts of corn protein powder, 1.5 parts of beer yeast, 0.1 part of mildew preventive, 3 parts of lecithin, 12 parts of edible soybean oil and 4 parts of premix.
The premix comprises the following components in parts by weight: 0.3 part of monocalcium phosphate, 0.03 part of ethoxyquinoline, 0.08 part of choline chloride, 0.6 part of compound multi-vitamin, 0.01 part of cholesterol, 0.03 part of glucan, 0.12 part of L-carnitine, 0.18 part of ferric sulfate monohydrate, 0.02 part of magnesium acetate, 0.015 part of L-alanine, 0.08 part of salt and 0.2 part of cellulose.
In the steps (3) and (5), the fermented feed comprises the following components in parts by weight: 25 parts of opening material, 8 parts of composite strain and 15 parts of brown sugar, wherein the composite strain comprises the following components in parts by weight: 0.22 part of bacillus subtilis, 0.22 part of bacillus licheniformis, 0.25 part of lactic acid bacteria and 0.23 part of microzyme.
Cultivation test:
after an artificial breeding test is performed in a Hui-Hai group test fishery, in 2017, 6 months and 3 days, Erythroculter ilishaeformis water fry is respectively placed in three ponds (hereinafter referred to as pond 1, pond 2 and pond 3) with the area of 5 mu according to the cultivation methods in the first to third embodiments, and about 250 thousands of fishes are placed in each pond; dividing the pond 1 into 28 ponds in 6 months, wherein the seedlings emerge for about 230 thousands of seedlings, the survival rate is 92.1 percent, and the quantity of the rotifers, the ichthyophthirius multifiliis and the quantity of the squints are respectively 0-2, 1-2 and 1-2 in each visual field; the pond 2 is divided into ponds in 7 months and 1 day, about 232 thousands of seedlings emerge together, the survival rate is 92.8 percent, and the number of rotifers, ichthyophthirius multifiliis and the number of tracheids in each visual field are respectively 0-1, 1-2 and 0-1; dividing the pond 3 into ponds at 7 months and 2 days, wherein seedlings grow about 228 thousands of seedlings, the survival rate is 91.2%, and the number of rotifers, ichthyophthirius multifiliis and the number of tracheids in each visual field are respectively 0, 1-2 and 0-1; and the average size of the fries cultured in the ponds 1-3 is about 3000 per jin, the fries have good physique and basically do not die after being divided into ponds.
In conclusion, the invention removes the harm of miscellaneous fish bacteria to the fry by drying and cleaning the pond, ensures the healthy living growth environment of the fry, develops the special opening material and the fermented feed, is added with animal protein and vegetable protein which are reasonably proportioned, and is matched with sterilization components such as garlicin, an anti-mildew agent and the like, can effectively ensure the sufficiency of nutrition, avoids the feed from mildewing, is added with various nutrient substances such as mineral substances, vitamins, amino acids and the like, and further improves the immunity of the fry, so that the survival rate of the fry is obviously improved by less than 50 percent compared with the prior art, and the cost for culturing the fry is further greatly reduced.
It should be noted that the technical features of the first to third embodiments can be combined arbitrarily, and the combined technical solutions all belong to the protection scope of the present application.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A culter ilishaeformis fry breeding method is characterized by comprising the following steps:
(1) and (3) pond sunning: selecting a pond with the depth of 2.0-2.5m, draining the pond water, removing sludge if the thickness of sludge at the bottom of the pond exceeds 30cm, enabling the thickness of the sludge to be 10-20cm, and airing for 20-30 days;
(2) cleaning a pond and removing impurities: 5-7 days before seedling placement, 5-10cm of water is fed in, the bottom of the pond is submerged, and 10-15Kg of tea cakes are used for killing pests per mu;
(3) water culture: 3 days before putting the seedlings, feeding water, filtering the water inlet by using a bolting silk with the mesh of more than 120 meshes to prevent roes and harmful organisms from entering the pond until the water depth is 50-60cm, applying organic acid to detoxify, and bundling green plants into a group to be used as green manure to be soaked in water; applying 10-20Kg of fermented manure and/or 2-3Kg of fermented feed and/or 0.5-1.5Kg of amino acid manure water paste per mu, packaging the fermented manure and/or the fermented feed by using woven bags, opening holes on the woven bags, and stacking the woven bags at the corners of the pond;
(4) seedling releasing: putting the oxygen bag filled with the fish fries into the pond at an air inlet of the pond at about 10:00 am in fine days, opening the oxygen bag when the temperature difference between the water temperature in the oxygen bag and the water temperature in the pond is less than 2 ℃, adding pond water, then pouring the fish fries in the oxygen bag into the pond from the water surface, and putting 40-60 ten thousand fish fries per mu;
(5) feeding: the seedlings are not required to be fed for one week before the seedlings are placed; feeding the opening feed 3-4 times along the pond edge every day on the 8 th day, wherein the feeding amount is 8-12% of the weight of the fish every day, and feeding the fermented feed for three consecutive days every week on the 8 th day;
(6) daily management: the pond is patrolled once in the morning and evening every day, frog eggs are fished along the sides of the pond, an aerator is started at 12:00-14:00 and 1:00-5:00 in the morning in sunny days, the planktonic biomass is observed, fertilizer is supplemented in time or fermented manure stacked at the pond corners is fished out, and when green plants bundled into a group and soaked in water are completely blacked out, the fermented manure is fished out in time; after the feeding of the opening material is started, adding water of 5-10cm every day until the water depth is about 1.2m meters; killing insects for the first time 10-12 days after seedling placement, sterilizing the insects for the second day after the first time, and regularly microscopic examining the parasites;
(7) dividing ponds: dividing the fish fry into ponds when the body length of the fish fry reaches 2-3cm, pulling the fish fry to a net for hoarding for half an hour for discharging 3 days before dividing the ponds, and stopping feeding for one day before dividing the ponds; sprinkling anti-stress drugs when dividing the pond, pulling the fry to be stocked in the net cages for about one hour, transporting, stocking 2.5-3 thousands of fries in each net cage, and moving an aerator to the vicinity of the net cages for oxygenation in the stocking process.
2. The cultivation method as claimed in claim 1, wherein in the step (3), the green plants comprise young broad beans and rape stems in a weight ratio of 1: 1.
3. the cultivation method according to claim 1, wherein in the step (4), the oxygen-increasing machine is started 1 hour before the seedling is released and is continued until the time reaches 15:00-16:00 in the afternoon; and sprinkling glucose and electrolytic multi-dimensional water in the whole pool 0.5 hour before putting the seedlings.
4. The cultivation method as claimed in claim 1, wherein in the step (4), before the seedling is released, a seedling releasing test is performed in a predetermined area to observe the survival condition of the seedlings.
5. The cultivation method as claimed in claim 1, wherein the opening material comprises, in parts by weight: 10-20 parts of Peruvian super steam fish meal, 10-15 parts of peanut bran, 20-40 parts of soybean meal, 50-100 parts of strong flour, 5-7 parts of brown sugar, 8-10 parts of alfalfa meal, 0.02-0.05 part of allicin, 3-6 parts of wheat middling, 3-5 parts of spirulina powder, 5-10 parts of corn protein powder, 1-2 parts of beer yeast, 0.08-0.12 part of mildew preventive, 2-4 parts of lecithin, 10-15 parts of edible soybean oil and 3-5 parts of premix; and the preparation process of the opening material comprises the following steps: weighing the raw materials in parts by weight; mixing all the raw materials, stacking at 22-26 deg.C, primarily fermenting for 3-5 days, stirring and mixing the primarily fermented raw materials again, and fermenting at 22-26 deg.C in dry and dark place for one week.
6. A cultivation method as claimed in claim 5, wherein the premix comprises, in parts by weight: 0.1 to 0.5 portion of monocalcium phosphate, 0.02 to 0.05 portion of ethoxyquinoline, 0.08 to 0.1 portion of choline chloride, 0.5 to 0.8 portion of compound multi-vitamin, 0.01 to 0.02 portion of cholesterol, 0.02 to 0.05 portion of glucan, 0.1 to 0.15 portion of L-carnitine, 0.15 to 0.25 portion of ferric sulfate monohydrate, 0.01 to 0.02 portion of magnesium acetate, 0.01 to 0.02 portion of L-alanine, 0.05 to 0.1 portion of salt and 0.1 to 0.3 portion of cellulose.
7. The cultivation method according to claim 1, wherein in the steps (3) and (5), the fermented feed comprises the following components in parts by weight: 20-30 parts of opening material, 5-10 parts of composite strain and 10-20 parts of brown sugar, and the preparation process of the fermented feed comprises the following steps: weighing the raw materials according to the weight parts, loading the opening material and water into a barrel according to the weight ratio of 1:5, adding the composite strain and brown sugar, uniformly stirring, sealing and fermenting for 5-7 days, and using when the pH value of the fermentation liquor is 4.
8. The cultivation method as claimed in claim 1, wherein the composite strain comprises, in parts by weight: 0.2-0.25 part of bacillus subtilis, 0.2-0.25 part of bacillus licheniformis, 0.2-0.3 part of lactic acid bacteria and 0.15-0.25 part of microzyme.
9. The cultivation method as claimed in claim 1, wherein in the step (4), aquatic plants are planted in the pond within one week after the seedling setting, and the planting area is 20-25% of the total area of the pond.
10. The cultivation method as claimed in claim 1, wherein in the step (6), live water is periodically introduced into the pond and surface algae and aquatic weeds are periodically salvaged.
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