How to raise shrimp will not die? what kind of water do you use to raise shrimp?

Every hot summer, although people hate this high temperature environment, but for this season's food is still very sultry. Lobster is a very delicious food, more and more consumers love it in the market, and its breeding prospects are considerable. However, there are many farmers who say shrimp die easily. Is there a problem in the breeding process?

How to raise shrimp without dying

1. Select pond: The water source for crayfish cultivation requires fresh water quality, sufficient dissolved oxygen and no pollution. The pond ridge width should be more than 3 meters. The pond area should not be too large, generally 3-8 mu. It is worth noting that crayfish have strong escape ability, so we must do a good job in the construction of escape prevention facilities.

2, pond disinfection: pond disinfection can effectively kill the pool of enemy organisms (catfish, loach, snakehead, snake, rat, etc.) and compete with the wild fish (carp, crucian carp, etc.) and pathogens, you can use quicklime and bleaching powder, economic, affordable and safe.

3. Planting aquatic plants: aquatic plants play an important role in lobster cultivation. Generally, half of the pond area is suitable. Low-stem reed, Zizania latifolia, Elorea verticillata, Hydrilla verticillata, etc. can be selected. If conditions permit, some empty cans, bamboo tubes, roots, etc. can be placed at the bottom.

4. Lobster stocking: lobster fry is divided into spring and autumn. It is required to be neat in specification, complete in appendages, disease-free and injury-free. It is required to put enough at one time. Before stocking, bathe with 5% edible salt water for 5~10 minutes to kill parasites and pathogenic bacteria.

5. Feed feeding: crayfish mostly feed at night, feeding once at 10:00 a.m. and 4:00 p.m. every day. The afternoon feeding amount accounts for about 70% of the feeding amount of the whole day. The daily feeding amount can be appropriately increased or decreased according to the weather, water quality conditions and shrimp activity foraging conditions.

6. Daily management: crayfish breeding should patrol the pond every day, pay attention to the change of water color and lobster activities. If shrimp is found ashore or climbing on water plants to drive them away, check whether the water body is oxygen-deficient or the water quality is deteriorated, etc., and take corresponding measures, such as oxygenation and water change.

What water to use for shrimp farming

1, shrimp pond water quality indicators are: pH value between 8-8.6; color brown, brown or green; transparency in 30-1000px; dissolved oxygen in 4mg/l above; ammonia nitrogen less than 0.1mg/l; nitrite less than 0.05mg/l. Add water in the early stage, change water appropriately according to the water quality in the middle and late stages, and regularly use micro-ecological agents to adjust the water quality to keep the water quality good.

2. The saturation of dissolved oxygen in the pond can improve the growth rate of prawns. Dissolved oxygen saturation in the pond, water purification capacity is strong, water quality stability. Shrimp live in a stable water quality environment, good appetite, large food intake, good digestion, high utilization rate, growth is relatively fast. This is also why some pond water quality adjustment is good, shrimp is easy to big reason.

Control method of lobster black gill disease

1. Causes of black gill disease

Black gill disease of lobster is caused by deterioration of water quality and pollution, which promotes Fusarium to multiply and parasitize on gill filament, body wall, appendage base or eyeball of lobster.

II. Symptoms of blackgill disease

The gills of crayfish turn from reddish to brown or pale brown, and then gradually turn black, causing gills to atrophy and function to gradually degenerate. Sick shrimp often surface or attached to water plants exposed to the water, slow and sluggish, and finally died due to breathing difficulties.

III. Black gill disease control

1. Before seedling release, clear the pond thoroughly with quicklime.

2. Ensure that the pool water is fresh and the dissolved oxygen is sufficient, and remove the residual bait and debris in the pool in time.

3. Use potassium permanganate with concentration of 0.2-0.3 mg/L to sprinkle the whole pool for disinfection.

4, during the onset of disease, with 1 mg/liter concentration of bleaching powder or 7 mg/liter concentration of methyl blue whole pool splash, there is a certain effect.

What are the advantages of raising crayfish

1. Large market potential: The market demand for crayfish is very large. This tense market supply-demand relationship makes the crayfish industry have high economic benefits and broad development prospects, and sales are not a problem.

2. Low breeding difficulty: crayfish has strong adaptability to the environment, few diseases and low oxygen tolerance. It can not only carry out high-density cultivation of small water bodies in ponds, but also naturally proliferate in various water bodies such as rivers, lakes, rice fields and swamps. The breeding technology is simple.

3, low breeding cost: crayfish food miscellaneous, bait easy to solve, in low-density breeding without feeding special feed, faster growth rate, high yield, high energy conversion rate, low breeding cost, good benefits.

4. Short breeding cycle: crayfish can be listed on the market after about 2 months of breeding. Circular breeding can be adopted through the technical scheme of catching large and keeping small, belonging to the breeding mode of one-time investment and perennial benefit.

Lobster farming on the water quality requirements are still relatively strict, shrimp in a stable water quality environment will grow faster. At present, the market demand for shrimp increases, and the breeding prospects are very considerable. Friends with breeding experience can consider it.