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Efficient stepped pond culture method for river crabs

A breeding method and a stepped technology, applied in the field of breeding, can solve the problems of river crab plumpness not meeting the requirements, affecting health, and high mortality of river crabs, so as to improve physical fitness and survival rate, prevent escape, and have high nutritional value Effect

Inactive Publication Date: 2018-06-22
和县明信水产养殖专业合作社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of artificial breeding, usually larger breeding density is used, with the spraying of pesticides and hormones, and the use of concentrated feed or premixed feed, so that the meat quality of river crabs is poor, and the body contains more hormones. After human consumption It will also affect your health, and the mortality rate of river crabs is high, the survival rate is low, the plumpness of river crabs often does not meet the requirements, and the economic benefits are not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for cultivating river crabs in highly efficient stepped ponds, comprising the following steps:

[0025] (1) Build a stepped pond: choose a pond with sufficient water, good water quality, and no pollution as the aquaculture pond. The stem of the aquaculture pond is 1.8m high, the pond stem is 1.2m wide, and the slope ratio is 1:2. The aquaculture pond is divided into shallow water There are gentle slopes between adjacent areas, buffer areas and deep water areas. The water depth in the shallow water area is 0.3-0.5m, the water depth in the buffer area is 0.5-1.2m, and the water depth in the deep water area is 1.2-2m. Emergent aquatic plants are planted on the shallow water area and the buffer area. Emerging aquatic plants are wild arrowhead, reed, bamboo shoots or cattails, floating aquatic plants are waterweed or duckweed, and submerged aquatic plants are planted in deep water areas, and submerged aquatic plants are hornwort, centipede grass or water grass;

[0...

Embodiment 2

[0031] A method for cultivating river crabs in highly efficient stepped ponds, comprising the following steps:

[0032] (1) Build a stepped pond: choose a pond with sufficient water, good water quality, and no pollution as the aquaculture pond. The stem of the aquaculture pond is 2m high, the pond stem is 1.5m wide, and the slope ratio is 1:3. The aquaculture pond is divided into shallow water areas , the buffer zone and the deep water area, there is a gentle slope between them, the water depth in the shallow water area is 0.3-0.5m, the water depth in the buffer zone is 0.5-1.2m, and the water depth in the deep water area is 1.2-2m. Emergent aquatic plants are planted in the shallow water area and buffer zone. Emergent aquatic plants are wild arrowhead mushrooms, reeds, bamboo shoots or cattails, floating aquatic plants are waterweed or duckweed, and submerged aquatic plants are planted in deep water areas, and submerged aquatic plants are hornwort, centipede grass or water gra...

Embodiment 3

[0038] A method for cultivating river crabs in highly efficient stepped ponds, comprising the following steps:

[0039] (1) Build a stepped pond: choose a pond with sufficient water, good water quality, and no pollution as the aquaculture pond. The stem of the aquaculture pond is 1.8m high, the pond stem is 1m wide, and the slope ratio is 1:2. The aquaculture pond is divided into shallow water areas , the buffer zone and the deep water area, there is a gentle slope between them, the water depth in the shallow water area is 0.3-0.5m, the water depth in the buffer zone is 0.5-1.2m, and the water depth in the deep water area is 1.2-2m. Emergent aquatic plants are planted in the shallow water area and buffer zone. Emergent aquatic plants are wild arrowhead mushrooms, reeds, bamboo shoots or cattails, floating aquatic plants are waterweed or duckweed, and submerged aquatic plants are planted in deep water areas, and submerged aquatic plants are hornwort, centipede grass or water gra...

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Abstract

The invention provides an efficient stepped pond culture method for river crabs, and relates to the technical field of cultivation. The efficient stepped pond culture method includes (1), building upa stepped pond; (2), feeding juvenile crabs, spraying quick lime slurry into the pond 20 days before feeding, and applying fertilizer 10 days before feeding to cultivate food organisms; (3), from themiddle ten days of April to August, at 7 am, 15 pm and 21 pm, feeding feed for the juvenile crabs once into shallow water; (4), from August to October, at 6 am, 13 pm, 17 pm and 22 pm, feeding feed for adult crabs once into the shallow water; (5), at the end of October, catching the river crabs. The efficient stepped pond culture method has the advantages that the cultured river crabs have rich cream fat, crab meat is delicious, and economic benefit is high.

Description

technical field [0001] The invention relates to the technical field of cultivation, in particular to a method for cultivating river crabs in high-efficiency stepped ponds. Background technique [0002] River crabs, formerly known as Chinese mitten crabs, are juvenile crabs before reproductive migration. Because of their yellowish shell color, they are commonly known as "yellow crabs". When it completes the last molt, it develops into a "green crab", with a dark green shell and plump gonads. The male crab's claws and feet are densely velvet, and the legs are thick and long. The abdomen of the female crab completely covers the ventral surface of the carapace, and the edge of the abdomen The bristles are long and dense. The life of river crabs goes through several stages such as flea-like larvae, megalopa, juvenile crabs and adult crabs. In its life, the larvae need to molt 5 times to become megalopa, and then molt 13-15 times to become adult crabs. It has only one reproductio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59A23K50/80A23K10/30A23K20/147A23K10/20A23K10/22A23K10/26
CPCA01K61/59A23K10/20A23K10/22A23K10/26A23K10/30A23K20/147A23K50/80Y02A40/81Y02A40/818
Inventor 陈虎奚业文尹家武刘忠志
Owner 和县明信水产养殖专业合作社
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