CN213523482U

CN213523482U - Net cage for breeding juvenile chelicea crayfish

Info

Publication number: CN213523482U
Application number: CN202022456016.7U
Authority: CN
Inventors: 胡大胜; 江林源; 韩书煜; 施金谷; 黎姗梅; 梁怡; 易弋; 兰健勇
Original assignee: Aquatic Technology Extension Station Of Guangxi Zhuang Autonomous Region
Current assignee: Aquatic Technology Extension Station Of Guangxi Zhuang Autonomous Region
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-06-25
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a red chelonian fry breeds box with a net, red chelonian fry breeds box with a net by the parent shrimp box with a net, the box with a net of growing seedlings, dead lever, parent shrimp shelter, shrimp fry shelter and sinker constitute, parent shrimp box with a net cover in the box with a net of growing seedlings, parent shrimp shelter sets up in the parent shrimp box with a net, and shrimp fry shelter sets up in the box with a net region of growing seedlings outside the parent shrimp box with a net. The utility model overcomes the red chelonian shrimp is grown seedlings and is built the investment great, grow seedlings the lower defect of benefit, neither need the capital construction investment, has reached the effect of growing seedlings of building the red chelonian shrimp workshop again, for the different extensive applications of breeding scale red chelonian shrimp plant provide the condition, can improve the red chelonian shrimp benefit of growing seedlings more than 20%.

Description

Net cage for breeding juvenile chelicea crayfish

Technical Field

The utility model belongs to the technical field of aquaculture, a red chelonian shrimp facility of growing seedlings is related to, concretely relates to red chelonian fry breeds box with a net.

Background

The self-killing habit of the red crayfish is strong, each parent crayfish can eat more than 20 crayfish fries every day in the breeding season, and the survival rate of naturally breeding the crayfish fries is very low. The utility model discloses earlier, the artificial propagation of red chelonian shrimp is mostly to build parent shrimp and cultivates the workshop such as pond, the plant of growing seedlings, though improved the shrimp fry survival rate by a wide margin, but the capital construction investment is great, and the benefit of growing seedlings is lower.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provides a net cage for breeding the fry of the red crayfish, which solves the problems of large investment for capital construction of the fry of the red crayfish and low fry benefit.

The technical scheme for solving the technical problems is as follows: the utility model provides a net cage for breeding the fry of the red swamp crayfish, which comprises a parent shrimp net cage, a fry breeding net cage, a parent shrimp concealed object, a shrimp fry concealed object, a fixed rod and a sinker, wherein the parent shrimp net cage and the fry breeding net cage are both square open net cages, the fixed rod is arranged on each corner of the parent shrimp net cage and the fry breeding net cage, the parent shrimp net cage is sleeved in the fry breeding net cage, and the mesh size of the parent shrimp net cage is larger than that of the fry breeding net cage; the parent shrimp concealed objects are arranged at the inner bottom of the parent shrimp net cage, and the shrimp fry concealed objects are arranged at the inner bottom of the fry raising net cage; the plurality of sinkers are arranged and respectively arranged at the corners of the parent shrimp net cage and the seedling net cage and on the side edge of the bottom of the seedling net cage in the length direction.

Preferably, the seedling culture net cage is a square net cage of a 7-20-mesh silk net, the length of the square net cage is 20-40m, the width of the square net cage is 5-7.5m, and the height of the square net cage is 1.0-1.2 m; the parent shrimp net cage is a square net cage with the length of 4-10m, the width of 5cm smaller than that of the seedling net cage, the height of 1.0-1.2m and the mesh size of 1.5-2.0cm, a plastic escape-proof film is sewn on the top of the net at the open end of the square net cage, and the inner brim of the plastic escape-proof film faces into the cage.

Preferably, the parent shrimp concealed object is formed by connecting a square or round plastic pipe with the length of 20cm and the inner diameter of 6-8cm into a string of pipe bodies with the length of 3-5m by using a net rope, the distance between the plastic pipes is 10-12cm, and one end of the net rope is left with 1.5m and is connected with a 500ml sealed empty plastic bottle; the shrimp larvae shelter is a square tube body with 100-plus 200 holes formed by connecting a plurality of square plastic tubes with the length of 10-12cm and the inner diameter of 1.0-1.5cm through a net rope, wherein one end of the net rope is reserved with 1.5m and is connected with a 500ml sealed empty plastic bottle.

Preferably, the sinker is a sand bag of 2-3kg, and the sinker is connected with the net cage through a net rope.

The utility model discloses a red chelonian fry breeds box with a net is used for red chelonian to grow seedlings, does not need capital construction investment, makes things convenient for female and parent shrimp to transfer after laying eggs and the project is bred and gathers after, can be applied to the plant of different breed scales.

Drawings

Fig. 1 is a schematic structural view of the breeding net cage for the fry of the red crayfish of the utility model.

Fig. 2 is a schematic structural view of the parent shrimp concealment object of the present invention.

Fig. 3 is a schematic structural view of the shrimp larvae shelter of the present invention.

Detailed Description

The utility model discloses a red chelonian fry breeding net cage and a use method thereof are further explained with reference to specific embodiments.

As shown in fig. 1-3, the utility model discloses a crayfish fry breeding net cage, including parent shrimp net cage 3, seedling net cage 2, parent shrimp concealed, shrimp fry concealed, dead lever 1 and sinker, parent shrimp net cage 3 and seedling net cage 2 are square open net cages, dead lever 1 is set up on each corner of parent shrimp net cage 3 and seedling net cage 2, parent shrimp net cage 3 is nested in seedling net cage 2, the mesh size of parent shrimp net cage 3 is greater than the mesh size of seedling net cage 2; the parent shrimp concealed objects are arranged at the inner bottom of the parent shrimp net cage 3, and the shrimp fry concealed objects are arranged at the inner bottom of the fry breeding net cage 2; the sinkers are arranged in a plurality of numbers and are respectively arranged at the corners of the parent shrimp net cage 3 and the seedling net cage 2 and on the side edge of the bottom of the seedling net cage 2 in the length direction.

When the breeding net cage for the crayfish fries is specifically implemented, the parent shrimp net cage 3 and the breeding net cage 2 are square net cages with four corners, and the breeding net cage 2 is a 7-20-mesh silk net square net cage with the length of 20-40m, the width of 5-7.5m and the height of 1.0-1.2 m; the parent shrimp net cage 3 is a net square net cage, the length is 4-10m, the width is 5cm smaller than the net cage 2, the height is 1.0-1.2m, the mesh size is 1.5-2.0cm, a plastic escape-proof film is sewn on the top of the net at the open end of the square net cage, and the inner brim of the plastic escape-proof film faces into the cage. The parent shrimp net cage 3 is arranged in the seedling net cage 2, the fixed rod 1 of the parent shrimp net cage 3 can be shared with the fixed rod 1 of the seedling net cage 2, or the fixed rod 1 of the parent shrimp net cage 3 can be independently arranged, the hidden objects of the parent shrimps are formed by connecting 25-50 square or round plastic pipes with the length of 20cm and the inner diameter of 6-8cm into a string of pipes with the length of 3-5m by using net ropes with the diameter of 3mm, the distance between the plastic pipes is 10-12cm, and one end of each net rope is reserved with 1.5m and connected with a 500ml sealed empty plastic bottle. The shrimp fry shelter is formed by bundling a square porous plastic pipe with the length of 10-12cm and the inner diameter of 1.0-1.5cm into a square pipe body with 100-200 holes by using a net rope with the diameter of 3mm, wherein one end of the net rope is reserved with 1.5m and is connected with a 500ml sealed empty plastic bottle, a sinker is a sand bag with 2-3kg, and the sinker is connected with a net cage through the net rope.

The utility model discloses a method for using red chelonian fry breeding net cage is: (1) in the breeding season of the red swamp crayfish, fixing the breeding net cage in the breeding pond by using a fixing rod, and fixing the parent crayfish net cage in the middle of the breeding net cage by using the fixing rod; the parent shrimp shelters are distributed on two long sides of the bottom in the parent shrimp net cage, and the number of holes of the parent shrimp shelters is 120% of the number of parent shrimps; the shrimp larvae concealed objects are distributed on two wide edges of the inner bottom of the seedling raising net cage and the bottoms of the outer sides of the parent shrimp net cage in the two width directions, and the number of the shrimp larvae concealed objects is 2 times of the number of the parent shrimps; the sinkers are respectively arranged at the corners of the parent shrimp net cage and the seedling net cage, and the side edges of the bottom in the length direction of the seedling net cage are arranged at intervals of 5 m;

(2) the middle of the parent shrimp net cage and the middle of the breeding net cage area outside the parent shrimp net cage are respectively provided with a plastic pipe water inlet with the inner diameter of 4-5cm, the breeding water body is provided with a line outlet with the width of more than 50cm, and the continuous water inlet state is kept after the parent shrimps enter the cage and before the shrimp seedlings leave the cage.

(3) When the water temperature is stabilized above 22 ℃, putting spawned female and parent shrimps with identical fertilization maturity and color into a parent shrimp net cage, putting and breeding density of 1 tail per square meter, feeding the feeds once every morning and evening from the next day, wherein the types of the feeds are parent shrimp feeds and green feeds for the shrimps, the feeds are fed for 1 day after 2 days of the parent shrimp feeds are fed, and the daily feeding rate of the feeds is as follows: 3-4% of parent prawn feed and 12-15% of green feed, and arranging 120w of oxygen increasing equipment in every 100 square meters of parent prawn net cage, and starting up the machine to increase oxygen from 23 days to 6 days.

(4) Estimating the parent and female shrimp fry producing time according to the fertilization maturity color, respectively arranging 1 single shrimp fry cage in the middle of the parent shrimp net cage and the middle of the fry raising net cage areas at two sides outside the parent shrimp net cage one day before the parent and female shrimp fry produce, lifting the cage every day to observe the number of the shrimp fries, collecting the shrimp fry cage, the parent shrimp shelter and the parent shrimp net cage after 5 days of the peak period of the fry producing, and transferring the parent and female shrimps to a postpartum breeding pond.

(5) The compound feed for the prawns is fed to the cage for the young prawns the next day, the feed is fed once in the morning and at night every day, the daily feeding amount is 1.5kg/100 square meters, the feeding amount in the morning accounts for 30-40%, and the feeding amount in the evening accounts for 60-70%; the daily feeding amount is increased by 20-30% every day, until the daily feeding amount is increased by 5-10% every 5 days after the peak period of seedling production. Culturing the shrimp seedlings for 20-30 days, and collecting the shrimp seedlings for sale or transferring the shrimp seedlings to adult shrimp culture when the shrimp seedlings grow to more than 3.0 cm.

Claims

1. A red swamp crayfish fry breeding net cage is characterized in that: the net cage for the parent shrimps and the net cage for the seedling culture are square open net cages, the fixing rods are arranged on the corners of the net cage for the parent shrimps and the net cage for the seedling culture, the net cage for the parent shrimps is sleeved in the net cage for the seedling culture, and the mesh size of the net cage for the parent shrimps is larger than that of the net cage for the seedling culture; the parent shrimp concealed objects are arranged at the inner bottom of the parent shrimp net cage, and the shrimp fry concealed objects are arranged at the inner bottom of the fry raising net cage; the plurality of sinkers are arranged and respectively arranged at the corners of the parent shrimp net cage and the seedling net cage and on the side edge of the bottom of the seedling net cage in the length direction.

2. The crayfish fry breeding net cage of claim 1, characterized in that: the seedling culture net cage is a 7-20-mesh silk net square net cage, the length is 20-40m, the width is 5-7.5m, and the height is 1.0-1.2 m; the parent shrimp net cage is a square net cage with the length of 4-10m, the width of 5cm smaller than that of the seedling net cage, the height of 1.0-1.2m and the mesh size of 1.5-2.0cm, a plastic escape-proof film is sewn on the top of the net at the open end of the square net cage, and the inner brim of the plastic escape-proof film faces into the cage.

3. The crayfish fry breeding net cage of claim 1, characterized in that: the parent shrimp shelter is formed by connecting a plurality of square or round plastic pipes with the length of 20cm and the inner diameter of 6-8cm into a string of pipes with the length of 3-5m by using net ropes, the distance between the plastic pipes is 10-12cm, and one end of each net rope is reserved with 1.5m and is connected with a 500ml sealed empty plastic bottle; the shrimp larvae shelter is a square tube body with 100-plus 200 holes, which is formed by bundling a plurality of square plastic tubes with the length of 10-12cm and the inner diameter of 1.0-1.5cm by using net ropes, wherein one end of each net rope is reserved with 1.5m and is connected with a 500ml sealed empty plastic bottle.

4. The crayfish fry breeding net cage of claim 1, characterized in that: the sinker is a sand bag of 2-3kg and is connected with the net cage through a net rope.