How to raise sea crabs
In recent years, sea crab farming has gradually become one of the popular projects in aquaculture. Whether it is family breeding or commercial large-scale breeding, it is crucial to master the correct breeding methods. This article will combine popular topics and hot contents on the entire network for the past 10 days to introduce you in detail the breeding methods of sea crabs and provide structured data for reference.
1. Basic conditions for sea crab farming
Sea crabs have high requirements for water quality, temperature and feed. The following are the basic conditions for raising sea crabs:
| condition | Require |
|---|---|
| Water quality | Salinity 20-30‰, pH value 7.5-8.5, dissolved oxygen amount ≥5mg/L |
| temperature | Suitable water temperature of 20-28℃, below 15℃ or above 32℃ will affect growth |
| feed | Mainly made of small fish, shellfish, and artificial compound feed |
| Breeding density | It is advisable to stock 100-150 per mu of water surface |
2. Steps for raising sea crabs
1.Pond preparation: Choose a place close to the water source and convenient drainage to build a pool. The bottom of the pool is best for sand and mud, and the water depth is maintained between 1-1.5 meters.
2.Seedlings are released: Choose strong and disease-free crab seedlings, soak them in 3%-5% salt water for 10 minutes before stocking.
3.Daily management:
| project | Key points of operation |
|---|---|
| Feed | Feed once every morning and evening, and the feeding amount is 5%-8% of the crab weight |
| Change water | Change 1/3 of the water every week to keep the water fresh |
| observe | Regularly check the growth and health of crabs |
4.Disease prevention and treatment: Common diseases include white spots, black gill disease, etc., which can be prevented by regular disinfection and maintaining water quality.
3. Things to note when raising sea crabs
1.Shell removal period management: Crabs are very fragile during dehulling, and interference should be reduced and calcium feed should be increased.
2.Temperature control: The water level should be deepened when the temperature is high in summer, and the insulation shed can be built when the temperature is low in winter.
3.Prevention of flight measures: An anti-escaping net should be set up around the pond to prevent crabs from escaping.
4. Market prospects for sea crab farming
According to recent market research data:
| area | Wholesale price (yuan/jin) | Retail price (yuan/jin) |
|---|---|---|
| East China | 45-55 | 60-80 |
| South China | 50-60 | 65-85 |
| North China | 55-65 | 70-90 |
With the upgrading of consumption, the demand for high-quality sea crabs has increased year by year, and the prospects for breeding are broad. It is recommended that farmers pay attention to market trends and adjust the breeding scale in a timely manner.
5. Frequently Asked Questions on Breeding
1.Q: How long is the breeding cycle of sea crabs?
A: Generally, the product specifications can be reached in 4-6 months of breeding.
2.Q: How to judge whether the crab is healthy?
A: Healthy crabs are agile in movement, bright in body color, and no trauma or lesions.
3.Q: What should I pay attention to most during the breeding process?
A: The most important things are water quality management and disease prevention, which directly affect the success or failure of breeding.
Through the above system introduction, I believe you have a comprehensive understanding of sea crab farming. During the breeding process, we must closely observe the growth status of crabs and adjust management measures in a timely manner to obtain the best breeding benefits.
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