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Method for raising river crabs by using multi-element fodder

A crab and feed technology, applied in animal feed, animal feed, applications, etc., can solve problems such as no longer having competitive advantages, not adapting to market demand, and low market price, so as to reduce sick and dead crabs, increase EPA content, and promote rapid The effect of growth

Inactive Publication Date: 2015-02-11
SUZHOU YANGCHENGHU MODERN AGRI INDPARK SPECIAL AQUACULTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For now, simply pursuing the high-density and high-yield small-scale commercial crabs in the past no longer has a competitive advantage and does not meet market demand. It is difficult to sell, the market price is low, and the breeding benefits are poor.

Method used

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  • Method for raising river crabs by using multi-element fodder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for raising river crabs with multiple feeds, comprising the following steps:

[0016] 6) Pond construction: The shape of the pond is rectangular, east-west, with an aspect ratio of 2: 1, and the planting area of ​​aquatic plants is 60%. , the pond is generally flat, with a ridge height of 2m, a slope ratio of 1:3, a surface width of 1.5-2m, and a breeding water depth of 1-1.5m. More than m, drainage and irrigation are convenient, water quality is good, no sewage flows in, crab ponds are dry ponds, and the bottom of the ponds is cracked after being exposed to the sun. 2 , sprinkle the water all over the pond, install 6 cm high calcium-plastic boards around the crab pond as escape prevention facilities, and use 1.2 m high mesh cloth to enclose about 15% of the area as a temporary breeding area at the bottom of the pond. The cloth is made of calcium-plastic board and polyethylene mesh; at the same time of water intake, transplant Elodea and Hydrilla verticillium,...

Embodiment 2

[0024] The preparation method is the same as in Example 1.

[0025] In the juvenile stage of growing river crabs, pull them out, and divide them into five pools, 500 in every pool, put in the microbial river crab fertilizer and common river crabs according to the amount of 200kg per mu in the four pools respectively. Fertilizer (control 1, produced from Beijing Century Arms Biotechnology Co., Ltd. ), the other pond did not put in river crab fertilizer (control 2), but put in the same amount of common fish food, the rest of the feeding amount was the same, and the cultivation environment was the same. After 2-4 months of breeding, the production and the growth of river crabs were compared. , specifically as shown in Table 1 and Table 2:

[0026] Table 1 Microbial Shrimp Fertilizer prepared by the present invention and contrast 1 comparison

[0027]

Yield increase (%) Individual growth (%) Reduction of sick and dead fish (%) EPA content increment (%) ...

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Abstract

The invention discloses a method for raising river crabs by using multi-element fodder. A pond is rectangular and located in east-west direction, the length-width ratio is 2:1, an aquatic plant growing area accounts for 60%, aquatic plants are grown in the middle of the pond, and a water surrounding ditch with the width of 70-80 cm is dug around the pond and used as a pond for raising the river crabs temporarily; the raising density for pond crab raising is controlled to be 600-700 crabs / mu; when crabs shell for the first time and the second time, the transparency of pond water is 30 cm above, and when the crabs shell for the third time and the fourth time, the transparency of the pond water is 50 cm above; when the crabs shell for the fifth time, the transparency of the pond water is 80 cm above; and unslaked lime water is sprayed into the crab pond at fixed time, namely, once a month. According to the method, an added compound microorganism fertilizer can promote rapid growth of the river crabs, the EPA content is increased, diseases and sick and dead river crabs are reduced, and at the same time, beneficial microorganisms in the water are increased, and the quality is improved finally.

Description

technical field [0001] The invention relates to an aquaculture method, in particular to a high-efficiency cultivation method for river crabs in a pollution-free pond. Background technique [0002] With the rapid development of my country's economy and the general improvement of people's living standards, people are no longer satisfied with popular aquatic products such as common carp, silver carp and bighead carp on the table, but gradually turn to high-quality aquatic products such as river crabs. In the production of river crabs, it has also realized the transformation from quantity speed type to quality benefit type, from "big crab farming" to "big crab farming", especially paying more attention to ecology, safety, environmental protection, health, and pollution-free The cultivation of aquatic products has higher and higher requirements on the quality of aquatic products. For now, the simple pursuit of the high-density, high-yield small-scale commercial crabs in the past...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00A23K1/00A23K1/16A23K1/18
CPCY02A40/81
Inventor 沈建明
Owner SUZHOU YANGCHENGHU MODERN AGRI INDPARK SPECIAL AQUACULTURE
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