Method for culturing Abambux quadricarinatus

Abstract

The invention belongs to the technical field of aquaculture, and particularly relates to a breeding method of Abambuus clarkii. According to the breeding method of the Asian crayfish, through the mode of combining greenhouse breeding and outer pond breeding, the problem that the Asian crayfish cannot pass the winter outdoors in the northern area is effectively solved, the survival rate of the Asian crayfish is greatly increased, meanwhile, breeding and seedling raising are conducted in winter, the gap of traditional outer pond breeding is effectively filled, and the breeding efficiency is improved. The breeding time is saved, the Asian crayfish can grow and develop for a longer time before being caught and sold, the meat yield is increased, and the taste of shrimp meat is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for breeding Procambarus serratus. Background Art

[0002] Yabby crayfish (Cherax albidus) is a native shrimp species from western and southern Australia, known locally as yabby, known for its light grey, light yellow or olive green body color and fast growth rate. Yabby crayfish is not only an important local edible aquaculture species, but also entered the Chinese aquarium market as an ornamental crayfish since 2007. Since then, it has been bred and raised by individuals or small farmers as an ornamental shrimp. While having high ornamental value, its wide temperature tolerance, high stress resistance, high meat yield, and high nutritional value also reveal its feasibility and huge potential as a widely cultivated edible shrimp in China. However, up to now, there are no large enterprises or companies in my country that cultivate it as an edible shrimp.

[0003] However, there are significant problems in the traditional selection and breeding technology of Asian crayfish: the integrated breeding and rearing operation in the original pond environment leads to large shrimps preying on shrimp fry and shrimp fry competing for bait, which makes the shrimp and shrimp fry small in size and easy to die; at the same time, small-sized Asian crayfish left in the pond as parents for breeding have immature gonads, few eggs, and low emergence rate; in addition, it is difficult to manage shrimp fry in the original pond in a refined manner, and the shrimp fry are weak and small in size; in addition, the long-term breeding habit of "catching the big and leaving the small" leads to the degradation of germplasm, which is manifested in miniaturization, slow growth, frequent diseases, and unstable production; especially in the winter in the north, the traditional breeding method shortens the effective breeding time, and the outer pond cannot overwinter, which further affects the overall size of Asian crayfish when it is caught. Therefore, it is urgent to innovate the selection and breeding technology of Asian crayfish to overcome existing problems and improve breeding efficiency and product quality. Summary of the invention

[0004] The object of the present invention is to provide a method for cultivating Procambarus avium. The method provided by the present invention not only effectively avoids the problem that Procambarus avium cannot spend the winter outdoors in northern regions, improves the survival rate of Procambarus avium, but also allows the Procambarus avium to grow and develop for a longer time.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a method for breeding a crayfish, which is carried out in a pond and comprises the following steps:

[0007] S1: Shrimp fry release: Shrimp fry are released into the outer pond breeding area from May to July. The standard for releasing shrimp fry is: the size of the shrimp fry is 3-4 cm from head to tail, and 3,000-7,000 shrimp fry are released per acre of water surface;

[0008] S2: Shrimp fry cultivation: After the shrimp fry are released, they are fed with compound bait once in the morning and evening until the shrimp fry weigh 95-105g;

[0009] S3: Catching shrimp fry and breeding: Select high-quality shrimps and put them into the breeding area of ​​the greenhouse for breeding;

[0010] S4: Adult shrimp fishing: All adult shrimps are caught between late April and early May of the following year;

[0011] The pond includes a greenhouse and an outer pond.

[0012] Preferably, the greenhouse is divided into a breeding area and a cultivation area, the breeding area in the greenhouse occupies 30% to 40% of the greenhouse area, and the remaining area is the cultivation area.

[0013] Preferably, the shrimp fry in step S1 are cultivated in a cultivation area.

[0014] Preferably, the breeding area and the cultivation area are separated by an isolation net; the mesh size of the isolation net is controlled to be 1.5-2 cm in diameter.

[0015] Preferably, the greenhouse and the outer pond are surrounded by escape-proof nets.

[0016] Preferably, in step S2, the temperature of the greenhouse is controlled at 20-28°C.

[0017] Preferably, the mass of the compound feed fed at night in step S2 is 66% of the mass of the compound feed fed in the morning.

[0018] Preferably, the average weight of the high-quality shrimps in step S3 exceeds 100 g.

[0019] Compared with the prior art, the beneficial effects are:

[0020] 1) By combining greenhouse farming with outdoor pond farming, the problem of Asian crayfish being unable to overwinter outdoors in northern regions is effectively avoided, which greatly improves the survival rate of Asian crayfish. At the same time, choosing to breed and raise seedlings in winter effectively fills the gap in traditional outdoor pond farming, saves seedling raising time, and allows Asian crayfish to have a longer time to grow and develop before being caught and sold, thereby improving the meat yield and the taste of the shrimp meat.

[0021] 2) During the breeding period, small-aperture isolation nets are used to effectively separate parent shrimps from fry, as well as individuals with faster and slower growth rates. The crawfish are cultivated in a refined manner, which greatly increases the survival rate of shrimp fry and realizes a positive cycle of selection, reproduction, and farming. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 This is the floor plan of the pond for breeding Abyssinian crayfish. DETAILED DESCRIPTION

[0024] The present invention provides a method for breeding a crayfish, which is carried out in a pond and comprises the following steps:

[0025] S1: Shrimp fry release: Shrimp fry are released into the outer pond breeding area from May to July. The standard for releasing shrimp fry is: the size of the shrimp fry is 3-4 cm from head to tail, and 3,000-7,000 shrimp fry are released per acre of water surface;

[0026] S2: Shrimp fry cultivation: After the shrimp fry are released, they are fed with compound bait once in the morning and evening until the shrimp fry weigh 95-105g;

[0027] S3: Catching shrimp fry and breeding: Select high-quality shrimps and put them into the breeding area of ​​the greenhouse for breeding;

[0028] S4: Adult shrimp fishing: All adult shrimps are caught between late April and early May of the following year;

[0029] The pond includes a greenhouse and an outer pond.

[0030] Furthermore, the greenhouse is divided into a breeding area and a cultivation area, the breeding area in the greenhouse accounts for 30% to 40% of the greenhouse area, and the rest is the cultivation area. Preferably, the breeding area of ​​the greenhouse accounts for 30% of the greenhouse area, and the greenhouse is rectangular, 30m long and 10m wide.

[0031] Furthermore, the shrimp fry described in step S1 is cultivated in a cultivation area.

[0032] Furthermore, in step S1, it is preferred that 5,000 shrimp fry are released per acre of water surface during shrimp feeding, and the size of the shrimp fry is 3 cm in length from head to tail.

[0033] In step S2, during the shrimp fry cultivation, it is preferred that the shrimp fry weigh about 100 g.

[0034] In step S2, the greenhouse temperature is controlled at 20-28°C, preferably 24°C.

[0035] The mass of the compound feed fed in the evening in step S2 is 66% of the mass of the compound feed fed in the morning.

[0036] Furthermore, the main ingredients of the composite bait are spirulina, soybean meal, fish meal and the like.

[0037] The average weight of the high-quality shrimps in step S3 exceeds 100 g.

[0038] Furthermore, the breeding area and the cultivation area are separated by an isolation net; the mesh size of the isolation net is controlled to be 1.5-2 cm in diameter, preferably 1.5 cm.

[0039] Furthermore, anti-escape nets are arranged around the greenhouse and the outer pond.

[0040] The following will be combined with the embodiments to clearly and completely describe the concept of the present invention and the technical effects produced, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0041] Example 1

[0042] A pond suitable for breeding crayfish

[0043] The land is divided into two parts: the greenhouse area and the outer pond area. The greenhouse area is mainly responsible for breeding and seedling cultivation functions, and is further subdivided into two functional areas, namely the breeding area and the seedling cultivation area. The greenhouse is rectangular, 30 meters long, 10 meters wide, and has a total area of ​​300 square meters. According to a specific proportion, the breeding area in the greenhouse accounts for 30% to 40% of the greenhouse area, and the remaining area is the cultivation area, that is, 100 square meters for the breeding area and 200 square meters for the seedling cultivation area. The outer pond is used as a breeding area with a total area of ​​1 mu. An isolation net is set between the breeding area and the seedling cultivation area of ​​the greenhouse, and the mesh size is controlled to be about 1.5 cm in diameter. Figure 1 shown.

[0044] Example 2

[0045] A kind of culturing method of crayfish

[0046] S1: Shrimp fry placement: In early May, shrimp fry that have been cultivated in the cultivation area are placed in the outer pond culture area described in Example 1. The standard for placing shrimp fry is: the size of the shrimp fry is 3 cm from head to tail, and 5,000 shrimp fry are placed per acre of water surface;

[0047] S2: Shrimp fry cultivation: After the shrimp fry are released, they are fed with compound bait once in the morning and evening until early November, when the shrimp fry weigh 100g;

[0048] S3: Catching shrimp fry and breeding: Selecting seed shrimp weighing about 100g and putting them into the breeding area of ​​the greenhouse for breeding;

[0049] S4: Fishing of adult shrimps: All adult shrimps will be caught in early May of the following year.

[0050] Example 3

[0051] A kind of culturing method of crayfish

[0052] S1: Shrimp fry placement: In July, shrimp fry that have been cultivated in the cultivation area are placed in the outer pond cultivation area described in Example 1. The standard for placing shrimp fry is: the size of the shrimp fry is 4 cm from head to tail, and 7,000 shrimp fry are placed per acre of water surface;

[0053] S2: Shrimp fry cultivation: After the shrimp fry are released, they are fed with compound bait once in the morning and once in the evening until November, when the shrimp fry weigh 105g;

[0054] S3: Catching shrimp fry and breeding: Select seed shrimp weighing about 105 and place them in the breeding area of ​​the greenhouse for breeding;

[0055] S4: Fishing of adult shrimps: All adult shrimps will be caught in late April of the following year.

[0056] The use area of ​​the breeding test greenhouse of the present invention is 300m 2 5,000 to 7,000 shrimp fry are released and the breeding time is in winter. The fish can reach the fishing size in just 6 months, which shortens the breeding time, saves resource costs, and effectively reduces risks. The total weight at the time of fishing is effectively increased by 40%, and the breeding survival rate is about 90%, which effectively reduces the breeding cost.

[0057] Although the above embodiment describes the present invention in detail, it is only a part of the embodiments of the present invention, not all of the embodiments. People can also obtain other embodiments based on this embodiment without creativity, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A method for breeding crayfish, characterized in that: The method is carried out in a pond and comprises the following steps: S1: Shrimp fry release: Shrimp fry are released into the outer pond breeding area from May to July. The standard for releasing shrimp fry is: the size of the shrimp fry is 3-4 cm from head to tail, and 3,000-7,000 shrimp fry are released per acre of water surface; S2: Shrimp fry cultivation: After the shrimp fry are released, they are fed with compound bait once in the morning and evening until the shrimp fry weigh 95-105g; S3: Catching shrimp fry and breeding: Select high-quality shrimps and put them into the breeding area of ​​the greenhouse for breeding; S4: Adult shrimp fishing: All adult shrimps are caught between late April and early May of the following year; The pond includes a greenhouse and an outer pond.

2. The method for cultivating Procambarus sutchuenensis according to claim 1, characterized in that: The greenhouse is divided into a breeding area and a cultivation area. The breeding area occupies 30% to 40% of the greenhouse area, and the remaining area is the cultivation area.

3. The method for cultivating Procambarus argentatus according to claim 1, characterized in that: The shrimp fry described in step S1 are cultivated in a cultivation area.

4. The method for cultivating Procambarus sutchuenensis according to claim 2, characterized in that: The breeding area and the cultivation area are separated by an isolation net; the mesh size of the isolation net is controlled to be 1.5-2cm in diameter.

5. The method for cultivating Procambarus sutchuenensis according to claim 1, characterized in that: Anti-escape nets are arranged around the greenhouse and the outer pond.

6. The method for cultivating Procambarus sutchuenensis according to claim 1, characterized in that: In step S2, the greenhouse temperature is controlled at 20-28°C.

7. The method for cultivating Procambarus sutchuenensis according to claim 1, characterized in that: The mass of the compound feed fed in the evening in step S2 is 66% of the mass of the compound feed fed in the morning.

8. The method for cultivating Procambarus argentatus according to claim 1, characterized in that: The average weight of the high-quality shrimps in step S3 exceeds 100 g.

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