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Method for ecologically poly-culturing fishes with different feeding habits in net cages of shrimp culture pond

A technology for shrimp and fish, applied in the field of fish and shrimp polyculture, can solve the problems of affecting shrimp feeding, growth and economic benefits, the situation of late winter shed shrimp culture is not optimistic, and the culture has not improved significantly, so as to avoid breeding risks. , the effect of reducing aquaculture emissions, avoiding residual food and bait competition

Inactive Publication Date: 2013-03-27
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In South China (including Fujian Province) in 2010, the survival rate of early shrimp culture was extremely low, and the failure rate of culture was generally 50%, and even exceeded 80% in some areas; in the middle shrimp culture stage, the culture did not improve significantly; The situation of shrimp farming in winter sheds is not optimistic
However, the current polyculture technology of fish and shrimp still has the following problems: (1) If the polyculture with aggressive fish is mixed, the fish will prey on a large number of prawns, which will affect the survival rate of prawns; (2) If the density of polyculture fish is high, It may compete for high-quality and high-priced prawn feed, affecting the normal feeding, growth and economic benefits of prawns; (3) The common fish and shrimp polyculture mode also brings difficulties to feeding and fishing management

Method used

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  • Method for ecologically poly-culturing fishes with different feeding habits in net cages of shrimp culture pond
  • Method for ecologically poly-culturing fishes with different feeding habits in net cages of shrimp culture pond

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Select six experimental ponds, three experimental ponds and three contrast ponds, and three experimental ponds are provided with several net cages of 2 × 2 × 2 meter specifications. The setting method is as follows: figure 1 Shown in, four net cages 1 are set in the central waters of pond 2, three net cages 1 are respectively set at four corners of pond 2, and two aerators 3 are also arranged on the edge of pond 2, and the pond water is subjected to The promotion of the aerator 3 rotates and flows along a certain direction, so that the pool water flows toward the center of the pond.

[0023] The average water depth of each experimental pond is 1.5m, and the area is about 5 mu. Before the pond is released into the water, the pond is plowed and exposed to the sun. When entering the water, it is filtered with a 60-80 mesh screen to prevent wild fish from entering. The water is 60-80cm long, and 10-15kg of crushed tea seed cake is used per mu to directly Sprinkle it, or sp...

Embodiment 2

[0028] Six ponds were selected for the experiment, three each for the test pond and three for the control pond, and 16 net cages with a size of 2 × 2 × 2 meters were set in the three test ponds, and the setting method was as follows: figure 1 shown in . Each pond has an average water depth of 1.5m and an area of ​​about 5 mu.

[0029]Before the pond is released, the ponds are closed and sun-dried until cracked, and then the residual bait, sundries and silt are moved to the outside of the embankment, and then the bottom of the pond is plowed and exposed to the sun. When entering the water, use a 60-80 mesh screen to prevent wild fish from entering. The water intake is 60-80cm, and 10-15kg of crushed tea seed cakes are used per mu to directly spread it, or soak it for several hours and then mix it with slag and water. Splash clear pond. Disinfect the shrimp pond with 8kg of bleaching powder per mu about 15 days before releasing the shrimp seedlings, and then apply 100-150kg of...

Embodiment 3

[0035] Choose six experimental ponds, three contrast ponds and three experimental ponds, wherein each experimental pond is evenly equipped with 24 net cages of 4 × 4 × 2 meter specifications, and the setting method is as follows: figure 2 As shown, 24 net cages 1 are evenly set in pond 2, and aerator 3 is also provided with two pairs of side edges of pond 2.

[0036] The average water depth of each pond is 1.5m, and the area is about 5 mu. The ponds are cleaned, plowed and exposed to the sun before the water is released. Before the seedlings are stocked, 200kg of quicklime per mu is used to disinfect the whole pond, and the water is filtered with a 60-80 mesh screen to prevent wild miscellaneous fish from entering. Sprinkle 10-15kg crushed tea seed cakes per mu directly, or sprinkle the slag with water in the clear pond after soaking for several hours. Disinfect the water body of the shrimp pond with 8kg of bleaching powder per mu about 15 days before releasing the shrimp se...

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Abstract

The invention discloses a method for ecologically poly-culturing fishes with different feeding habits in net cages of a shrimp culture pond. A plurality of net cages are arranged in the shrimp culture pond; one or more omnivorous fishes, filter-feeding fishes and carnivorous fishes are put into the net cages; shrimps are put outside the net cages; the putting density of the shrimps is reduced; and the fishes and the shrimps are cultured in a separated manner by the net cages. The method can be used for culturing the fishes and shrimps in a separated manner, so that the shrimps are prevented from being preyed by the fishes, the fish baits are sufficiently utilized, and the catching is easy.

Description

technical field [0001] The invention specifically relates to a method for ecologically accompanying feeding fish in net cages in shrimp culture ponds, and belongs to the technical field of fish and shrimp polyculture. Background technique [0002] Since 2009, there has been a major outbreak of prawn farming diseases in South China, and the pathogens of prawns have continued from the nursery to the early shrimp, the middle shrimp, and the winter shed shrimp. In South China (including Fujian Province) in 2010, the survival rate of early shrimp culture was extremely low, and the failure rate of culture was generally 50%, and even exceeded 80% in some areas; in the middle shrimp culture stage, the culture did not improve significantly; The situation of shrimp farming in winter sheds is not optimistic. According to reports, the survival rate of winter shed shrimp farming in the Pearl River Delta is only about 30%, the survival rate in Guangxi is about 25%, and that in Zhangzhou,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 朱长波粟丽郭永坚文国樑张汉华
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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