High-quality crab breeding method

A high-quality, crab technology, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of uneven quality, poor seedling adaptability, low survival rate, etc. high effect

Inactive Publication Date: 2017-08-11
界首市大自然养殖专业合作社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing crab breeding, the seedling work is very critical. Many farmers buy seedlings from the market in order to save time and effort, but there are uneven quality and mutual feeding phenomenon during growth. At the same time, the seedlings have poor adaptability, resulting in low survival rate. Therefore, a self-sufficient seedling cultivation method can be adapted to the self-production farming model

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-quality seedling raising method for crabs, comprising the following steps:

[0018] (1) Select female crabs with a body weight of 90 grams and male crabs with a body weight of 120 grams as brood crabs for breeding. The male and female crabs are soaked separately for 5 minutes before breeding. The soaking solution contains sodium dichlorate with a mass concentration of 20 ppm and mass Baking soda with a concentration of 0.01%, after soaking, put it into the nursery pond according to the ratio of male to female ratio of 15:1, and the number of brood crabs placed in the spawning pond per 100 square meters is within the range of 80-100;

[0019] (2) Before laying eggs, control the water temperature in the nursery pond at 15°C, and control the pH value of the water between 7.8-8.2, and feed high-protein feed into the pond, with a protein content of 35%, a fat content of 30%, and a crude fiber content of 7%, the amount of feeding each time is subject to the parent crab...

Embodiment 2

[0026] A high-quality seedling raising method for crabs, comprising the following steps:

[0027] (1) Select female crabs with a body weight of 100 grams and male crabs with a body weight of 135 grams as brood crabs for breeding. The male and female crabs are soaked separately for 6 minutes before breeding. The soaking solution contains sodium dichlorate with a mass concentration of 25 ppm and mass Baking soda with a concentration of 0.015%, after soaking, put it into the nursery pool according to the ratio of male to female at 17:1, and the number of brood crabs placed in the spawning pool per 100 square meters is within the range of 80-100;

[0028] (2) Before laying eggs, control the water temperature in the nursery pond at 17°C, and control the pH value of the water body between 7.8-8.2, and feed high-protein feed into the pond, with a protein content of 40%, a fat content of 33%, and a crude fiber content of 8%, the amount of feeding each time is subject to the parent cra...

Embodiment 3

[0035] A high-quality seedling raising method for crabs, comprising the following steps:

[0036] (1) Select female crabs with a body weight of 110 grams and male crabs with a body weight of 150 grams as brood crabs for breeding. The male and female crabs are soaked separately for 8 minutes before breeding. The soaking solution contains sodium dichlorate with a mass concentration of 30 ppm and mass Baking soda with a concentration of 0.02%, after soaking, put it into the nursery pool according to the ratio of male to female at 20:1, and the number of brood crabs placed in the spawning pool per 100 square meters is within the range of 80-100;

[0037](2) Before laying eggs, control the water temperature in the nursery pond at 20°C, and control the pH value of the water body between 7.8-8.2, and feed high-protein feed into the pond, with a protein content of 45%, a fat content of 35%, and a crude fiber content of 9%, the amount of feeding each time is subject to the parent crabs...

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PUM

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Abstract

The invention relates to the technical field of aquaculture, and discloses a high-quality crab breeding method. The high-quality crab breeding method includes the following steps that (1) male and female crabs with suitable weight and vigorous vitality are selected as parent crabs, moreover the male and female crabs come from different water areas to prevent maldevelopment of juvenile crabs caused by inbreeding, and the male and female crabs are disinfected before putting to remove foreign germs; (2) before egg laying, the water temperature in a breeding pond is controlled at 15-20 DEG C, the pH value of a water body is controlled to be 7.8-8.2, high-protein feed is put into the pond, the pregnancy rate of the female crabs can be increased under the set conditions, the egg laying amount is substantially increased, and the content of egg nutrient substances is high, which is beneficial for further development by metamorphosis; (3) after egg laying, the temperature of the water body is raised, metabolism velocity is increased, juvenile crab development speed is increased, temperature is gradually reduced after the juvenile crabs are in a large-eye juvenile state, and it is avoided that the water body goes bad due to increase of bait and excrement in the water body under the high temperature environment.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for raising high-quality seedlings of crabs. Background technique [0002] Crabs: Animalia, Arthropoda, Crustacea, Molecula, Eurasia, Decapod, Ventricula, Brachyura. It is a crustacean, the body is protected by a hard shell, and it breathes by gills. In taxonomy, it is the same animal as shrimp, lobster, and hermit crab. Most species of crabs live in the sea or near the sea, and some live in fresh water or land. Crabs rely on the geomagnetic field to determine direction. China has a long history of eating crabs, which are recorded in "Yi Zhou Shu Wang Hui Jie" and "Zhou Li Tian Guan Bu Ren". Crabs are rich in protein, have high cholesterol and high purine, gout patients should control themselves when eating, and people with colds, hepatitis, and cardiovascular diseases should not eat crabs. China has a tradition of eating river crabs around the Mid-A...

Claims

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Application Information

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IPC IPC(8): A01K61/59
CPCY02A40/81
Inventor吕超建吕青山
Owner界首市大自然养殖专业合作社