Efficient purse seining growth breeding method of Australian fresh-water crawfish

A freshwater lobster and culture method technology, which is applied in the field of Australian freshwater lobster purse seining and high-efficiency culture, can solve problems such as unevenness and nibbling of lobster seedlings and feed, and achieves the goal of ensuring feed intake, improving survival rate, and ensuring survival rate. Effect

Inactive Publication Date: 2018-11-30
海宁市鸿海养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, and propose a thick and high-efficiency breeding method for Australian freshwater lobster seine nets. This method can effectively solve the problems that lobster seedlings will be eaten by other aquatic animals and uneven feeding, and effectively improve Survival rate of seedlings

Method used

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Examples

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Comparison scheme
Effect test

specific Embodiment 1

[0016] A kind of Australian freshwater lobster purse seine standard thick high-efficiency breeding method, comprising

[0017] Step 1 Pond construction: The ratio of length to width of the shrimp pond is 5:1, the area is 1500 square meters, and the water depth is required to be 1.3 meters. The pond body is firm and flat, with a silt layer of 0 cm, no leakage, convenient drainage and irrigation, and the water quality meets the fishery water quality standard;

[0018] Step 2 Seine preparation: The pond is dried for 28 days in the early stage, and a nylon seine net is installed before entering the water. The height is 1.25 meters, the ratio is 50 square meters per mu, and the aperture of the seine net is 20 mesh. , four sides fence or one side isolation;

[0019] Step 3 cleaning and disinfection: inject water depth of 70cm, put in bleaching powder, the effective content of bleaching powder is required to be 28%, and it is best to choose cloudy and rainy days, and the dosage is 50...

specific Embodiment 2

[0027] A kind of Australian freshwater lobster purse seine standard thick high-efficiency breeding method, comprising

[0028] Step 1. Pond construction: The ratio of length to width of the shrimp pond is 5:1, the area is 2,500 square meters, and the water depth is required to be 1.5 meters. The pond body is firm and flat, with a silt layer of 5 cm, no leakage, convenient drainage and irrigation, and the water quality meets the fishery water quality standard;

[0029] Step 2 Seine preparation: The pond should be sunned for 32 days in the early stage, and a nylon seine net should be set up before entering the water. The height is 1.32 meters, and the ratio is 80 square meters per mu. The aperture of the seine net is 30 meshes. , four sides fence or one side isolation;

[0030] Step 3 cleaning and disinfection: inject water depth of 85cm, put in bleaching powder, the bleaching powder requires an effective content of 30%, and it is best to choose cloudy and rainy days, and the do...

specific Embodiment 3

[0036] A kind of Australian freshwater lobster purse seine standard thick high-efficiency breeding method, comprising

[0037] Step 1 Pond construction: The ratio of length to width of the shrimp pond is 5:1, the area is 4,000 square meters, the water depth is required to be 1.7 meters, the pond body is firm and flat, the silt layer is 10 cm, there is no leakage, drainage and irrigation are convenient, and the water quality meets the fishery water quality standard;

[0038] Step 2 Seine preparation: Sun-dry the pond for 35 days in the early stage, and set up a nylon seine net before entering the water, with a height of 1.5 meters and a ratio of 100 square meters per mu. The aperture of the seine net is 40 meshes. It is required to have no holes and gaps, and it is 5 meters away from the shore of the pond body. , fenced on four sides or isolated on one side;

[0039] Step 3 cleaning and disinfection: inject water depth of 100cm, put in bleaching powder, the effective rate of bl...

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Abstract

The invention provides an efficient purse seining growth breeding method of Australian fresh-water crawfish. The method can be adopted to effectively solve the problems that juvenile crawfish is eatenby other aquatic animals and the feeding is not uniform, and the survival rate of the juvenile crawfish can be effectively improved. The method comprises the following steps: step 1, constructing a pond; step 2, preparing a purse seine, steps 3, removing impurities and carrying out disinfection; step 4, carrying out algae breeding operation; step 5, adding purse juvenile crawfish; step 6, addingfeed; step 7, carrying out crawfish management; and step 8, removing the purse seine and setting free the crawfish: after the juvenile crawfish grows to about 3-4 cm after breeding of 25-30 days, removing the purse seine and naturally setting free the crawfish.

Description

technical field [0001] The invention belongs to the technical field of Australian freshwater lobster cultivation, and in particular relates to a method for cultivating Australian freshwater lobster with coarse and high-efficiency seine nets. Background technique [0002] Australian freshwater lobster juveniles of 2-7cm can only use the dehydration mode during long-distance transportation. Due to the excessive temperature deviation during the long-term transportation, the organs of the juvenile shrimp are immature, resulting in an extremely obvious stress response of the juvenile shrimp. , and because the carapaces of juvenile shrimps are too soft, they are prone to cross-infection due to accumulation, extrusion or mutual attack, which leads to continuous large-scale death after arriving at the destination and entering the pond. On the contrary, 1cm seedlings can be transported with oxygen in nylon water bags, without dehydration, safe and simple transportation, with little s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59A23K50/80
CPCA01K61/59A23K50/80Y02A40/81
Inventor 钱豪杰周家升
Owner 海宁市鸿海养殖有限公司
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