Method for temporarily cultivating river crabs

A technology of river crabs and temporary breeding ponds, which is applied in the field of breeding, can solve the problems that river crabs cannot obtain enough nutrients to improve, and achieve the effects of bright body color, improved flavor and taste, and reduced risks

Inactive Publication Date: 2011-11-16
SUZHOU CITY XIANGCHENG DISTRICT NEW ERA SPECIAL AQUATIC FARM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In ponds, the growth of microalgae is inhibited due to the extensive planting of aquatic plants, so that the river crabs raised in ponds cannot obtain enough nutrients to improve their quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Snails (or river mussels, etc.) will be nutritionally strengthened from September 5th, and snails (or river mussels, etc.) will be temporarily raised in indoor cement ponds (temporary rearing ponds) before feeding, and 10-15kg of snails will be placed in each square cement pond. (or river mussels, etc.), the water depth is 50cm, filled with oxygen, keep the dissolved oxygen in the holding pool above 5mg / L, and the total ammonia <0.2mg / L; feed spirulina algae powder, about 50 grams of spirulina algae per cubic water body The specific feeding amount should be increased or decreased according to the transparency of the water body, and the transparency should be kept within 20cm, and the feeding period should last at least 5 days. The total amount should be about 10 grams of spirulina per kilogram of snails (or river mussels, etc.). Catch river crabs from September 10, put them in indoor cement ponds for temporary breeding, and start feeding snails (or river mussels, etc.) ...

Embodiment 2

[0022] Snails (or river mussels, etc.) will be nutritionally strengthened from September 5th, and snails (or river mussels, etc.) will be temporarily raised in indoor cement ponds (temporary rearing ponds) before feeding, and 10-15kg of snails will be placed in each square cement pond. (or river mussels, etc.), the water depth is 50cm, oxygenated, keep the dissolved oxygen in the holding pool above 5mg / L, and the total ammonia <0.2mg / L; feed Haematococcus pluvialis algae powder, about 5 grams per cubic water body Haematococcus pluvialis algae powder, and increase or decrease the feeding amount according to the transparency of the water body, keep the transparency within 20cm, and the feeding period lasts at least 5 days, and the total amount eats about 1 gram of rain per kilogram of snails (or mussels, etc.) Raw Haematococcus is strengthened. Catch river crabs from September 10, put them in indoor cement ponds for temporary breeding, and start feeding snails (or river mussels,...

Embodiment 3

[0024] Snails (or river mussels, etc.) will be nutritionally strengthened from September 5th, and snails (or river mussels, etc.) will be temporarily raised in indoor cement ponds (temporary rearing ponds) before feeding, and 10-15kg of snails will be placed in each square cement pond. (or river mussels, etc.), the water depth is 50cm, oxygenated, and the dissolved oxygen in the holding pool is kept above 5mg / L, and the total ammonia is <0.2mg / L; About 25 grams of spirulina algae powder + about 3 grams of Haematococcus pluvialis algae powder, and increase or decrease the feeding amount according to the transparency of the water body, keep the transparency within 20cm, and the feeding period lasts at least 5 days, starting from September 10 For river crabs, put them in an indoor cement pond for temporary breeding, and start to feed snails (or river mussels, etc.) No other bait is put into river crabs to ensure sufficient intake of fortified snails (or river mussels, etc.). It ...

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PUM

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Abstract

The invention provides a method for temporarily cultivating river crabs. Color generation matters such as carotenoid and the like and other flavor matters are transferred to the river crabs through spiral shell or clam and the like, and the river crabs in a pond are fed with spiral shell or clam which are fortified with spirulina and haematococcus pluvialis, thus making up the shortages of pond cultivation, and obviously improving the body color and flavor quality of the river crabs.

Description

technical field [0001] The invention relates to a cultivation method, in particular to a temporary cultivation method of river crabs. Background technique [0002] River crab is the freshwater crab with the largest output in my country, and it is one of the rare aquatic products with unique flavor and rich nutrition. With the progress of society and the needs of the vegetable basket project, its production significance and economic benefits have been fully affirmed. The edible part of river crab has a protein content of 14%, and contains a variety of amino acids, a fat content of 5.9%, a carbohydrate content of 7%, and rich vitamins. It is the crown of conventional aquatic products and has become an important aquaculture species in the Yangtze River Basin. In 2005 The annual output reaches about 450,000 tons, and the breeding area has a tendency to further expand. After the cyanobacteria incident in Taihu Lake in 2007, the scale of crab breeding in lake nets was strictly c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K1/18A23K50/80
CPCY02A40/81
Inventor 孔丽蔡春芳龚宏伟杜伟林张倩王国清
Owner SUZHOU CITY XIANGCHENG DISTRICT NEW ERA SPECIAL AQUATIC FARM
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