CN112544517A - Method for cultivating procambarus clarkii fries in greenhouse in cold region - Google Patents
Method for cultivating procambarus clarkii fries in greenhouse in cold region Download PDFInfo
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- CN112544517A CN112544517A CN202011426340.2A CN202011426340A CN112544517A CN 112544517 A CN112544517 A CN 112544517A CN 202011426340 A CN202011426340 A CN 202011426340A CN 112544517 A CN112544517 A CN 112544517A
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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
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
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- 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
A method for cultivating procambarus clarkia fries in a greenhouse in a cold region relates to a method for cultivating procambarus clarkia fries. Aims to solve the problem of low survival rate of the procambarus clarkii fries cultivated in the existing cold areas. The method comprises the following steps: arranging a canvas fish pond in the greenhouse, injecting fishery water and arranging culture increasing equipment; constructing an ecological water environment; arranging a shrimp nest; sterilizing and stocking shrimp larvae; manual management, comprising: feeding granulated feed three days before feeding, and feeding animal baits on the fourth day; feeding granulated feed on 5 th and 6 th days; maki bait is thrown on day 7. The invention can obtain high-quality juvenile shrimps with the body length of 3-5 cm in batch, and the survival rate reaches more than 85%. Meets the market demand of the procambarus clarkii fries in the cold area, and is suitable for popularization and application in the cold area. The invention is suitable for culturing procambarus clarkia fries.
Description
Technical Field
The invention relates to a method for cultivating procambarus clarkia fries.
Background
Procambarus clarkii (Procambarus clarkii) belongs to the family Arthropoda, Crustacea, Depodales, Crataegus, Procambarus, commonly known as freshwater crayfish. The procambarus clarkii has high growth speed and unique flavor. The crayfish breeding becomes the sunrise industry of green development of agriculture in China, and plays an important role in promoting the structural reform of the supply side of the agriculture (fishery) industry, promoting the efficiency improvement of the agriculture (fishery) industry and increasing the income of the agriculture (fishery) people.
The Heilongjiang province is located in the northeast alpine region of China, and has rich water resources. But the fishery culture structure is single, the aquaculture species mainly comprise real-estate fishes, and the shrimp culture species, the culture area and the yield are extremely low. In recent years, with the increasing market demand of procambarus clarkii, the cultivation of crayfish becomes one of the main modes of ecological cycle agricultural development. At present, some problems still exist in the breeding process of the procambarus clarkia in Heilongjiang, the breeding technology of the procambarus clarkia is relatively extensive, and a large-scale seedling breeding base of the procambarus clarkia is not seen. Meanwhile, long-distance transport tests and pond culture tests in two years show that the long-distance transport survival rate of the procambarus clarkia and the large-size offspring seeds is 75%, but the survival rate of the procambarus clarkia cultured in 10 days after the procambarus clarkia enters the pond is lower than 10%, so that the development of the procambarus clarkia culture industry in cold areas is further limited. In order to meet the market demand, improve the yield of the procambarus clarkii, expand the culture scale of the procambarus clarkii and promote the industrial development of the freshwater shrimps in the cold area, the technical research for breeding the procambarus clarkii fries becomes a necessary means for the culture development of the procambarus clarkii in the cold area at present.
Disclosure of Invention
The invention provides a method for cultivating procambarus clarkia fries in a greenhouse in a cold area, aiming at solving the problem of low survival rate of the procambarus clarkia fries cultivated in the cold area.
The method for cultivating the procambarus clarkii fries in the greenhouse in the cold region comprises the following steps:
firstly, early preparation: arranging a canvas fish pond in the greenhouse, injecting fishery water into the canvas fish pond, arranging oxygen increasing equipment in the canvas fish pond, and controlling the water temperature to be 15-30 ℃;
secondly, constructing an ecological water environment:
adding waterweeds, algae sources, peptide fertilizers for shrimps, EM (effective microorganisms), brown sugar and biological flocs into a sailcloth fish pond to adjust water quality to construct an ecological water environment, putting the biological flocs of 0.5 g/cubic meter every three days after putting shrimp seedlings into the sailcloth fish pond, wherein the biological flocs can adjust the water quality and can also be used as baits to promote the growth of the shrimp seedlings;
thirdly, arranging a shrimp nest: placing artificial nests in the canvas fish pond;
the shrimp nest corrugated plate is made of PVC; the length of the shrimp nest is 1 meter, the width is 0.3 meter, and the height is 3 cm; the shrimp nest is horizontally placed in the sailcloth fish pond; the plurality of shrimp nests are positioned on the same plane, and the adjacent shrimp nests are arranged in a staggered manner;
fourthly, shrimp larvae disinfection and stocking:
adding potassium permanganate into a water bag for transporting shrimp fries, enabling the concentration of the potassium permanganate to be 10-20 mg/L, sealing the bag, soaking the bag in a sailcloth fish pond for 5-10 minutes to balance water temperature and achieve fry revival, opening the bag, placing the shrimp fries in the sailcloth fish pond, and enabling stocking density to be 15-20 tails per square meter;
fifthly, manual management:
feeding the shrimp larvae into the pond for 2 days without feeding; feeding food is started on day 3, and 7 days are a period, wherein in the period: feeding granulated feed in the first three days and feeding animal bait in the fourth day; feeding granulated feed on 5 th and 6 th days; maki bait is thrown on day 7; the daily feeding amount is 3-5% of the shrimp weight in one period, the feeding time is once in the morning and at night, the morning is 30% of the daily feeding amount, and the evening is 70% of the daily feeding amount; the dissolved oxygen amount in water is controlled to be more than 4mg/L by a nano oxygenation disc.
The invention has the beneficial effects that:
the invention relates to a method for cultivating procambarus clarkia fries in a greenhouse in a cold region, belonging to a fry cultivating method of freshwater economic shrimps. The method comprises the steps of firstly building a greenhouse, arranging a canvas fish pond in the greenhouse, arranging oxygen increasing equipment and placing waterweeds in the pond, wherein the waterweeds account for 80% of the total volume of a water body; then regulating the water quality, and building a green ecological culture environment to ensure that the shrimp larvae can grow healthily when being thrown into the ecological water area; after the larvae are fed with the feed and artificially cultivated, high-quality larvae with the body length of 3-5 cm can be obtained in batches, and the survival rate reaches more than 85%. The method can improve the survival rate of the shrimp seeds, enhance the physique of the shrimp seeds, obtain the seed individuals with regular specifications, and is particularly suitable for the breeding production of the procambarus clarkii in the northern cold area. Meanwhile, the juvenile shrimps obtained by the method can be further cultured in a pond or a rice field to obtain large-size fries, so that the market demand of the procambarus clarkii fries in the cold area is met, the economic benefit is improved, and the culture risk is reduced. The method also has the characteristics of prolonged culture period, convenient operation and management, mass production, good benefit, short time and the like, is suitable for popularization and application in cold areas, and promotes the industrial development of the procambarus clarkii in the cold areas.
Drawings
FIG. 1 is a schematic view showing the structure of a shrimp nest in example 1;
fig. 2 is a schematic diagram showing the distribution of the shrimp nests in the canvas fish pond in example 1, in which fig. 1 is the canvas fish pond and fig. 2 is the shrimp nests.
Detailed Description
The technical scheme of the invention is not limited to the specific embodiments listed below, and any reasonable combination of the specific embodiments is included.
The first embodiment is as follows: the method for cultivating procambarus clarkii fries in the greenhouse in the cold region comprises the following steps:
firstly, early preparation: arranging a canvas fish pond in the greenhouse, injecting fishery water into the canvas fish pond, arranging oxygen increasing equipment in the canvas fish pond, and controlling the water temperature to be 15-30 ℃;
secondly, constructing an ecological water environment:
adding waterweeds, algae sources, peptide fertilizers for shrimps, EM (effective microorganisms), brown sugar and biological flocs into a sailcloth fish pond to adjust water quality to construct an ecological water environment, putting the biological flocs of 0.5 g/cubic meter every three days after putting shrimp seedlings into the sailcloth fish pond, wherein the biological flocs can adjust the water quality and can also be used as baits to promote the growth of the shrimp seedlings;
thirdly, arranging a shrimp nest: placing artificial nests in the canvas fish pond;
the shrimp nest corrugated plate is made of PVC; the length of the shrimp nest is 1 meter, the width is 0.3 meter, and the height is 3 cm; the shrimp nest is horizontally placed in the sailcloth fish pond; the plurality of shrimp nests are positioned on the same plane, and the adjacent shrimp nests are arranged in a staggered manner;
fourthly, shrimp larvae disinfection and stocking:
adding potassium permanganate into a water bag for transporting shrimp fries, enabling the concentration of the potassium permanganate to be 10-20 mg/L, sealing the bag, soaking the bag in a sailcloth fish pond for 5-10 minutes to balance water temperature and achieve fry revival, opening the bag, placing the shrimp fries in the sailcloth fish pond, and enabling stocking density to be 15-20 tails per square meter;
fifthly, manual management:
feeding the shrimp larvae into the pond for 2 days without feeding; feeding food is started on day 3, and 7 days are a period, wherein in the period: feeding granulated feed in the first three days and feeding animal bait in the fourth day; feeding granulated feed on 5 th and 6 th days; maki bait is thrown on day 7; the daily feeding amount is 3-5% of the shrimp weight in one period, the feeding time is once in the morning and at night, the morning is 30% of the daily feeding amount, and the evening is 70% of the daily feeding amount; the dissolved oxygen amount in water is controlled to be more than 4mg/L by a nano oxygenation disc.
The embodiment has the following beneficial effects:
the embodiment relates to a method for cultivating procambarus clarkia fries in a greenhouse in a cold region, belonging to a fry cultivating method of freshwater economic shrimps. The method comprises the steps of firstly building a greenhouse, arranging a canvas fish pond in the greenhouse, arranging oxygen increasing equipment and placing waterweeds in the pond, wherein the waterweeds account for 80% of the total volume of a water body; then regulating the water quality, and building a green ecological culture environment to ensure that the shrimp larvae can grow healthily when being thrown into the ecological water area; after the larvae are fed with the feed and artificially cultivated, high-quality larvae with the body length of 3-5 cm can be obtained in batches, and the survival rate reaches more than 85%. The method of the embodiment can improve the survival rate of the shrimp seeds, enhance the physique of the shrimp seeds, obtain the seed individuals with regular specifications, and is particularly suitable for the breeding production of the procambarus clarkii in the northern cold area. Meanwhile, the juvenile shrimps obtained by the method can be further cultured in a pond or a rice field to obtain large-size fries, so that the market demand of the procambarus clarkii fries in the cold area is met, the economic benefit is improved, and the culture risk is reduced. The method of the embodiment has the characteristics of prolonged culture period, convenience in operation and management, capability of volume production, good benefit, short time and the like, is suitable for popularization and application in cold areas, and promotes the industrial development of the procambarus clarkii in the cold areas.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: step one, the greenhouse is composed of a frame and a plastic film covered on the frame; the frame is made of steel, iron or wood.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: step one, the area of the canvas fish pond is 20-120 square meters, and the depth of the fishery water injected into the canvas fish pond is 50 cm.
The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: the aeration equipment comprises an air pump and a nano aeration disc, the air pump is connected with the nano aeration disc through an air pipe, the nano aeration disc is arranged in the sailcloth fish pond, and one nano aeration disc is arranged in the sailcloth fish pond every 15-25 square meters.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: and step two, the waterweeds are the waterweeds, and the adding amount of the waterweeds is 80 percent of the total volume of the water.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is: in the second step, the algae source is green algae or diatom, and the dosage of the algae source is 0.075 g/cubic meter.
The seventh embodiment: the difference between this embodiment and one of the first to sixth embodiments is: the adding amount of the peptide fertilizer for the shrimps is 20-30 g/cubic meter, the adding amount of EM bacteria is 2 ml/cubic meter, the adding amount of brown sugar is 10 g/cubic meter, and the adding amount of biological flocs is 1 g/cubic meter.
The specific implementation mode is eight: the present embodiment differs from one of the first to seventh embodiments in that: fifthly, the animal bait is minced fish or minced snail; the plant bait is semen glycines (cooked and cut) or herba Avenae Fatuae (cut).
The specific implementation method nine: the present embodiment differs from the first to eighth embodiments in that: step five, the pellet feed comprises the following components in parts by weight: 13 parts of imported fish meal, 10 parts of shrimp meal, 10 parts of fermented soybean meal, 13 parts of soybean meal, 7 parts of domestic expanded soybean, 10 parts of rapeseed meal, 10 parts of oil bran, 5 parts of expanded corn, 18 parts of wheat middling, 1 part of soybean oil, 1.5 parts of phospholipid oil, 4 parts of multi-vitamin multi-mineral premix and 0.05 part of DL-methionine.
Example 1:
the method for cultivating the procambarus clarkii fries in the greenhouse in the cold region comprises the following steps:
firstly, early preparation:
the greenhouse with the steel frame structure and the floor area of about 8000 square meters is built, the steel frame structure of the greenhouse is covered by plastic films, a layer of plastic film can be reinforced in the greenhouse in spring and autumn for improving the temperature in the greenhouse, a layer of shading net can be added on the roof in summer in high temperature, the plastic films on two sides are opened, the air circulation is promoted, the temperature in the greenhouse is reduced, and the greenhouse with the steel frame structure can resist severe weather all the year round and is firm and durable; 4 canvas fish ponds are arranged in the greenhouse, each canvas fish pond is 40 meters long, 3 meters wide and 1 meter high, the canvas fish ponds are supported and fixed by steel pipes, underground water treated by a filtering system is added to serve as water for fishery, and the water level of the water for fishery is 0.5 meter high. The underground water treated by the filtering system meets the standard GB11607-89 of fishery water quality standard, a water injection port and a water outlet are arranged in the canvas fish pond, and the water injection port and the water outlet are sealed by a plastic screen mesh to prevent shrimps from escaping or other organisms from entering.
Arranging nanometer oxygenation plates in the canvas fish pond, wherein each 15-25 square meters of the nanometer oxygenation plates are arranged, the diameter of each nanometer oxygenation plate is 1.2 meters, the distance between every two adjacent nanometer oxygenation plates is 5-8 meters, and the nanometer oxygenation plates are used for ensuring the supply of oxygen in pond water; the air inlet end of the nano oxygenation disc is communicated with the air outlet end of the air pump through an air pipe; controlling the water temperature in the canvas fish pond to be 25 ℃;
secondly, constructing an ecological water environment:
placing the elodea, the algae source, the peptide fertilizer for shrimps, the EM bacteria, the brown sugar and the biological floc into a sailcloth fish pond, wherein the elodea accounts for 80% of the total water volume; the algae source is green algae or diatom, and the dosage of the algae source is 0.075 g/cubic meter; the adding amount of the peptide fertilizer for shrimps is 20-30 g/cubic meter, the adding amount of EM bacteria is 2 ml/cubic meter, the adding amount of brown sugar is 10 g/cubic meter, and the adding amount of biological floccules is 1 g/cubic meter; peptide fertilizer for shrimp is purchased from Wuhan city Kogyo bioengineering Co., Ltd; the biological flocs are purchased from Daliangtai aquatic feeds Co Ltd;
thirdly, arranging a shrimp nest:
the shrimp nest corrugated plate is made of PVC; the length of the shrimp nest is 1 meter, the width is 0.3 meter, and the height is 3 cm; the shrimp nest is horizontally placed in the sailcloth fish pond; the plurality of shrimp nests are positioned on the same plane, and the adjacent shrimp nests are arranged in a staggered manner; FIG. 1 is a schematic view showing the structure of a shrimp nest in example 1; fig. 2 is a schematic diagram showing the distribution of the shrimp nests in the canvas fish pond in example 1, in which fig. 1 is the canvas fish pond and fig. 2 is the shrimp nests.
Fourthly, shrimp larvae disinfection and stocking:
in 6-month middle ten days of 2020, a batch of procambarus clarkii fries are purchased from a certain farm in Hubei province and transported to Harbin city agricultural academy by air and road, and the transportation time is 8.5 hours.
Adding potassium permanganate into a water bag for transporting shrimp fries, enabling the concentration of the potassium permanganate to be 15 mg/L, sealing the bag, soaking the bag in a sailcloth fish pond for 5 minutes to balance the water temperature and realize the fry revival, opening the bag, placing the shrimp fries in the sailcloth fish pond, and setting the stocking density to be 18 fries/square meter;
fifthly, manual management:
feeding the shrimp larvae into the pond for 2 days without feeding; feeding food is started on day 3, and 7 days are a period, wherein in the period: feeding granulated feed in the first three days and feeding animal bait in the fourth day; feeding granulated feed on 5 th and 6 th days; maki bait is thrown on day 7; the daily feeding amount is 3-5% of the shrimp weight in one period, the feeding time is once in the morning and at night, the morning is 30% of the daily feeding amount, and the evening is 70% of the daily feeding amount; controlling the dissolved oxygen amount in water to be 4mg/L through a nano oxygenation disc; the nanometer oxygenation plate can not only oxygenate oxygen, but also promote the flow of water. And monitoring the water quality state, wherein the indexes comprise water temperature, dissolved oxygen, pH value, nitrite, ammonia nitrogen and the like, and if the water quality index is not good, different preparations are added according to specific conditions to improve the water quality state.
The animal bait is minced fish or minced snail meat; the plant bait is boiled chopped soybean;
the pellet feed comprises the following components in parts by weight: 13 parts of imported fish meal, 13 parts of shrimp meal, 10 parts of fermented soybean meal, 13 parts of soybean meal, 7 parts of domestic expanded soybean, 10 parts of rapeseed meal, 10 parts of oil bran, 5 parts of expanded corn, 18 parts of wheat middling, 1 part of soybean oil, 1.5 parts of phospholipid oil, 4 parts of multi-vitamin multi-mineral premix (Tianjin Zhengda Dai feed science and technology Co., Ltd.), and 0.05 part of DL-methionine. The pellet feed comprises the following nutritional components: 33.2% of protein, 7.4% of fat, 2.1% of lysine, 0.7% of methionine, 1.1% of threonine, 0.5% of cystine, 1.2% of methionine, 1.8% of arginine, 1.3% of valine, 0.3% of proline, 0.3% of tryptophan, 1.2% of salt, 1.5% of starch, 6.4% of crude ash and 4.6% of crude fiber. And determining the feeding amount according to the conditions of the shrimp larvae state, the water temperature and the like.
After 25 days of culture, the length of the procambarus clarkii reaches 3-5 cm, the survival rate reaches 85 percent, and the culture condition of the procambarus clarkii in a pond is met.
Claims (9)
1. A method for cultivating procambarus clarkii fries in a greenhouse in a cold area is characterized in that: the method comprises the following steps:
firstly, early preparation:
arranging a canvas fish pond in the greenhouse, injecting fishery water into the canvas fish pond, arranging oxygen increasing equipment in the canvas fish pond, and controlling the water temperature to be 15-30 ℃;
secondly, constructing an ecological water environment:
adding waterweeds, algae sources, peptide fertilizers for shrimps, EM (effective microorganisms), brown sugar and biological flocs into a sailcloth fish pond to adjust water quality to construct an ecological water environment, putting the biological flocs of 0.5 g/cubic meter every three days after putting shrimp seedlings into the sailcloth fish pond, wherein the biological flocs can adjust the water quality and can also be used as baits to promote the growth of the shrimp seedlings;
thirdly, arranging a shrimp nest: placing artificial nests in the canvas fish pond;
the shrimp nest corrugated plate is made of PVC; the length of the shrimp nest is 1 meter, the width is 0.3 meter, and the height is 3 cm; the shrimp nest is horizontally placed in the sailcloth fish pond; the plurality of shrimp nests are positioned on the same plane, and the adjacent shrimp nests are arranged in a staggered manner;
fourthly, shrimp larvae disinfection and stocking:
adding potassium permanganate into a water bag for transporting shrimp fries, enabling the concentration of the potassium permanganate to be 10-20 mg/L, sealing the bag, soaking the bag in a sailcloth fish pond for 5-10 minutes to balance water temperature and achieve fry revival, opening the bag, placing the shrimp fries in the sailcloth fish pond, and enabling stocking density to be 15-20 tails per square meter;
fifthly, manual management:
feeding the shrimp larvae into the pond for 2 days without feeding; feeding food is started on day 3, and 7 days are a period, wherein in the period: feeding granulated feed in the first three days and feeding animal bait in the fourth day; feeding granulated feed on 5 th and 6 th days; maki bait is thrown on day 7; the daily feeding amount is 3-5% of the shrimp weight in one period, the feeding time is once in the morning and at night, the morning is 30% of the daily feeding amount, and the evening is 70% of the daily feeding amount; the dissolved oxygen amount in water is controlled to be more than 4mg/L by a nano oxygenation disc.
2. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: step one, the greenhouse is composed of a frame and a plastic film covered on the frame; the frame is made of steel, iron or wood.
3. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: step one, the area of the canvas fish pond is 20-120 square meters, and the depth of the fishery water injected into the canvas fish pond is 50 cm.
4. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: the aeration equipment comprises an air pump and a nano aeration disc, the air pump is connected with the nano aeration disc through an air pipe, the nano aeration disc is arranged in the sailcloth fish pond, and one nano aeration disc is arranged in the sailcloth fish pond every 15-25 square meters.
5. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: and step two, the waterweeds are the waterweeds, and the adding amount of the waterweeds is 80 percent of the total volume of the water.
6. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: in the second step, the algae source is green algae or diatom, and the dosage of the algae source is 0.075 g/cubic meter.
7. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: the adding amount of the peptide fertilizer for the shrimps is 20-30 g/cubic meter, the adding amount of EM bacteria is 2 ml/cubic meter, the adding amount of brown sugar is 10 g/cubic meter, and the adding amount of biological flocs is 1 g/cubic meter.
8. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: fifthly, the animal bait is minced fish or minced snail; the plant bait is semen glycines or herba Avenae Fatuae.
9. The method of claim 1 for rearing procambarus clarkia offspring seeds in a greenhouse in a cold area, wherein the method comprises the following steps: step five, the pellet feed comprises the following components in parts by weight: 13 parts of imported fish meal, 10 parts of shrimp meal, 10 parts of fermented soybean meal, 13 parts of soybean meal, 7 parts of domestic expanded soybean, 10 parts of rapeseed meal, 10 parts of oil bran, 5 parts of expanded corn, 18 parts of wheat middling, 1 part of soybean oil, 1.5 parts of phospholipid oil, 4 parts of multi-vitamin multi-mineral premix and 0.05 part of DL-methionine.
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| CN110786279A (en) * | 2019-12-05 | 2020-02-14 | 合肥金巢生态农业有限公司 | Off-season procambarus clarkii breeding method |
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| JP2015229145A (en) * | 2014-06-05 | 2015-12-21 | 英哉 小座間 | Raw refuse residue treating method utilizing earthworm, and residue treating apparatus therefor |
| CN109496937A (en) * | 2018-10-19 | 2019-03-22 | 长江大学 | A kind of cray indoor culture method |
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| CN110235826A (en) * | 2019-06-24 | 2019-09-17 | 浙江省淡水水产研究所 | A kind of thick breeding method of red claw crayfish seed brooder mark |
| CN110663605A (en) * | 2019-10-12 | 2020-01-10 | 沈阳农业大学 | Pond ecological breeding method for crayfishes suitable for northern areas |
| CN110786279A (en) * | 2019-12-05 | 2020-02-14 | 合肥金巢生态农业有限公司 | Off-season procambarus clarkii breeding method |
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