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Shrimp seed breeding and rearing method for cherax quadricarinatus

A technology for red crayfish and shrimp fry, applied in the field of aquaculture, can solve the problems of insufficient supply, low seedling breeding rate, shortening seedling emergence time, etc., and achieves the effects of improving the brooding rate, ensuring the survival rate, and achieving significant economic benefits.

Inactive Publication Date: 2020-08-18
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for breeding and raising seedlings of red-clawed crayfish, which can effectively increase the number of eggs held by female shrimp, the hatching rate and the survival rate of shrimp seedlings, shorten the emergence time of seedlings, increase the supply of high-quality seedlings, and solve the existing problems. The problem of low seedling breeding rate and insufficient supply in the technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The method for the breeding and raising seedlings of red-clawed crayfish of the present invention comprises the following steps:

[0028] (1) Preparation of breeding ponds: Set up breeding facilities for breeding ponds, mating ponds, hatching ponds and standard rough ponds, and set up a layered structure in the hatching ponds, which are divided into upper and lower parts, separated by a mesh plate with an aperture of 1.5cm in the middle. The aeration facility of the breeding pond adopts a microporous aerator to increase oxygen. Set the water quality conditions of the breeding pond, the water quality in the breeding pond should be pH 7.0-8.0, the dissolved oxygen should be kept above 4mg / L, the water temperature should be kept at 26-30°C, the ammonia nitrogen should be ≤0.5mg / L, and the total hardness should be between 100-200mmol / L. Change water 2 times every week, and water level remains on about 40cm, is provided with water inlet and water outlet in the breeding pond,...

Embodiment 2

[0037] The method for the breeding and raising seedlings of red-clawed crayfish of the present invention comprises the following steps:

[0038] (1) Preparation of the breeding pool: Set up the breeding facilities of the breeding pool, the mating pool, the hatching pool and the standard rough pool, and set up a layered structure in the hatching pool, which is divided into upper and lower parts, and the middle is separated by a mesh plate with an aperture of 2 cm. The aeration facility of the breeding pond adopts a microporous aerator to increase oxygen. Set the water quality conditions of the breeding pond, the water quality in the breeding pond should be pH 7.0-8.0, the dissolved oxygen should be kept above 4mg / L, the water temperature should be kept at 26-30°C, the ammonia nitrogen should be ≤0.5mg / L, and the total hardness should be between 100-200mmol / L. Change water 2 times every week, and water level remains on about 40cm, is provided with water inlet and water outlet in...

Embodiment 3

[0047] The method for the breeding and raising seedlings of red-clawed crayfish of the present invention comprises the following steps:

[0048] (1) Preparation of the breeding pool: Set up the breeding facilities of the breeding pool, the mating pool, the hatching pool and the standard rough pool, and set up a layered structure in the hatching pool, which is divided into upper and lower parts, and the middle is separated by a mesh plate with a pore size of 1 cm. The aeration facility of the breeding pond adopts a microporous aerator to increase oxygen. Set the water quality conditions of the breeding pond, the water quality in the breeding pond should be pH 7.0-8.0, the dissolved oxygen should be kept above 4mg / L, the water temperature should be kept at 26-30°C, the ammonia nitrogen should be ≤0.5mg / L, and the total hardness should be between 100-200mmol / L. Change water 2 times every week, and water level remains on about 40cm, is provided with water inlet and water outlet in...

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Abstract

The invention discloses a shrimp seed breeding and rearing method for cherax quadricarinatus. The method comprises steps as follows: (1), preparation of a breeding pool; (2), selection of parent shrimps; (3), culture of the parent shrimps; (4), pairing of the parent shrimps; (5), culture of fertilized eggs; (6), hatching management; and (7), nursing of the parent shrimps. The a shrimp seed breeding and rearing method for the cherax quadricarinatus is provided by construction of a culture pool, a mating pool, a hatching pool and a nursing pool, so that in the seed breeding stage, the egg mass rate of the cherax quadricarinatus reaches 70% or higher, the survival rate of the shrimp seeds reaches 80% or higher, the shrimp seed yield is 200% or higher of that in the prior art, and the method has remarkable economic benefits.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for breeding and raising seedlings of red-clawed crayfish. Background technique [0002] Red Claw Crawfish (Latin name: Cherax quadricarinatus) is native to northern Australia and is a larger species of freshwater shrimp, also known as Australian freshwater lobster. Classification belongs to Crustacea, Decapoda, Pseudomonas, and Slippery genus. The body color of the shrimp changes with the habitat environment. It is generally blue-green or brown-green. There is a membranous bright red band on the outer top of the claw, which is beautiful and looks like a lobster in sea water, so it is named red claw crayfish. The shrimp has the characteristics of miscellaneous feeding habits, fast growth, high yield, strong adaptability, and strong disease resistance. Its meat is tender, delicious, and has a high edible ratio. Therefore, it has high economic value and broad breedi...

Claims

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Application Information

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IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 陈成壮李二超钱敦苇刘志亮徐畅贾永义
Owner HAINAN UNIVERSITY
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