What are the precautions for factory shrimp farming?

At present, the domestic factory shrimp farming model: generally 3 5 stubble shrimp a year, after the seedlings are released, the standard seedling method is adopted to improve the success rate and shorten the breeding time. The first standard seedlings are about 25 days, the second time the seedlings are completed after the first standard seedlings 15 days, and the standard seedlings can be sold for 70 days, which not only improves the breeding efficiency, but also increases our profits.

Therefore, if you want to do a good job in factory shrimp farming, you must first do a good job of water and label seedlings in order to improve efficiency! Do a good job of water in the early stage of factory shrimp farming, and the aquaculture personnel can choose the fertilizer water mode to raise shrimp, and the appropriate amount of fertilizer and water transfer in the later stage, but it is recommended to do water not too early, and it can be a week before the seedlings. In the early stage of factory shrimp farming, it is necessary to do a good job in the management of standard seedlings.

Scientific management, reasonable feeding, in the shrimp seedling period, whether to feed shrimp chips, or other nutrients, to make a good judgment in advance. Check the body of shrimp seedlings, whether the intestines are full, there is a broken intestine, mopping, the water foam is not normal, and the pool wall is not clean.

Compared with traditional aquaculture, factory shrimp farming has factors such as short breeding cycle, low input, and fast profitability. Shrimp farming is generally divided into three seasons, the first season from January to May, the second season from April to July, and the third season from August to December. Basic conditions for breeding.

Water source, water quality should be clean, pollution is small, no ammonia nitrogen, salt, heavy metals can not exceed the standard, water temperature between 15 -20 throughout the year, the water in the reservoir should also be precipitated, disinfected, preheated, and then used in the breeding pond. Hardware equipment, breeding workshop setting, the general breeding pond is rectangular between 5-7 meters square, keeping the water depth of meters. Among them, the indispensable is the aeration equipment, generally using roots blower or vehicle aerator, the aeration rate is 10-15w cubic meters of water.

There is also a heating system, which generally adopts a boiler boiler or underground hot water well, and adjusts the required water temperature through a heat exchanger.

The layout of the farm, the general plant layout, digging the breeding pond, the breeding pond can be divided into two kinds, a cement pond, a film pond, both have advantages and disadvantages, personal advice or cement pond, the area of each pond does not need to be very large, the stocking density is very high, if you are sure to control the lobster do not fight, then you do not do the fence in the pond, divide the lobster one by one, if you don't put me, just do the fence honestly, divide them, and share a body of water. Automatic feeding comes with fish farming, feeding machine! The key lies in the control of the water body, circulating water plus aerator, after the wastewater comes out, it needs to be filtered, sterilized, and some of the substances needed by the lobster need to be added, but the water quality must be controlled.

In this way, it is easy to observe and can control the size of the shrimp.

First of all, the water quality must be tested to meet the standards of shrimp farming, the water circulation in the pond must also be done well, to ensure that the nutrients are sufficient, often clean up the bait and feces, water temperature and salinity are also the key, and to regularly check the water temperature and salinity of the shrimp seedlings, the most important thing is to often disinfect and sterilize the pond, feed according to the shrimp seedlings cultured, but every two days to clean up the bait and feces.

Shrimp farming lies in stability, it is better to be still than to be still, shrimp need a very stable environment in the water body, what is stability? It is perfect if the stability of the various data of the water introduced above is maintained at a fixed value for a long time, and it is not always tossed to change the water. It's a very annoying topic, why?

As soon as the water is changed, it is easy to have an accident, because the water change will break the stable environment, so we should try to reduce the water quality fluctuations caused by the water change. That is, slow and slow pumping, replenishment, pumping, remember not to pump away the shrimp and stir the sediment, the best water replenishment is to drip 20L of water for half a day, not a slower the better.

The choice of address should be to choose a flat land with abundant water resources, large water bodies nearby, and no industrial and agricultural pollution, and the soil quality is mainly loam. Pond construction, the pond is about 1 meter deep, there is a suitable deep water area, there is also a suitable shallow water area, and the planting of aquatic weeds should also have appropriate upper aquatic weeds and lower aquatic weeds. For the selection of shrimp seedlings, we should choose shrimp seedlings with strong physique, complete appendages, and no disease or injury.

At present, the most used in factory aquaculture is ring aquaculture, which generally uses seawater or well water, and the water temperature is 22---30 degrees.

Aquaculture management technology, this is the basic conditions necessary for shrimp farming, no technology in front of are ready are useless, generally divided into 5 aspects: disease prevention management, regular static, water quality stability, workshop disinfection, shrimp seedlings put.

13. After the seedlings are released, the method of standard seedlings needs to be adopted, which can improve the success rate and shorten the breeding time.

Summary. Slow growth in the early stage: first use water poison net + black bomb splash to prevent ammonia nitrogen poisoning, and then use water poison net + fish and shrimp guard to prevent and control liver lesions.

Slow growth in the middle and late stages: use fish and shrimp Guardforce + fish and shrimp guard and water poison net + red kelin to solve the atrophy of the front end of the liver, if there is stealing death, it must be waterproof and layered, the bottom odor is toxic and hypoxic, and the speed of the use of speed + five-star guard oxygenation and detoxification should be used in time, and then use Fudian + degradable spirit tablets to change the bottom and detoxify.

If it is found that there is a red tail phenomenon of prawns: first use fish and shrimp Guardforce + Red Keling to disinfect, and then use fox hunting the next day, which can be used twice in a row.

What to do if bread shrimp appears in factory farming.

Once it is found that the substrate deteriorates, or the shrimp has symptoms such as jejunum and empty stomach, liver atrophy and even seedling loss, the digging type should be targeted by Ma Yu to reduce or even stop feeding. At the same time, the following corresponding measures are taken according to different situations: early stage of breeding:

Use water poison net + fish Qingsan and shrimp guard to splash detoxification and liver protection, use big bubble king + multi-dimensional strong seedlings to strengthen the physique, and use Fudi'an + decomposition bottom to prevent the bottom of the pool wall from slipping.

Slow growth in the early stage: first use Boyuan Town Water Poison Purification + Heiba Splash to prevent ammonia nitrogen poisoning, and then use Water Poison Purification + Fish and Shrimp Guard to prevent and control liver lesions. Slow growth in the middle and late stages:

Make the base coarse use fish and shrimp Guardan + fish and shrimp guards and water poison net + red kelin to solve the atrophy of the front end of the liver, if there is stealing death, it must be waterproof and layered, the bottom odor is toxic and hypoxic, and the speed of the use of speed + five-star guard oxygenation and detoxification should be used in a timely manner, and then use Fudian + degradable tablets to change the bottom to detoxify. If it is found that there is a red tail phenomenon of prawns: first use fish and shrimp Guardforce + Red Keling to disinfect, and then use fox hunting the next day, which can be used twice in a row.

Industrial salt cannot be used to raise shrimp.

Potassium persulfate complex salt is the most important single product water quality improver in shrimp and crab farming. Farmers need to understand these things in use. Otherwise, it will have no effect and may be counterproductive.

At present, the content of the most persulfur products in the world is generally % tablets. and 50% powder. Generally, low-content tablets are used to change the bottom and transfer water, and high-content powders are used for sterilization and algae control.

The first use of sulfur must be small. Otherwise, it will break the compacted structure of the pond bottom and release a large amount of harmful toxins accumulated at the pond bottom. The purification capacity of herbaceae in the water body cannot keep up.

Shrimp and crabs will have a serious emergency response. The dosage of persulfur per mu should not exceed 200 grams. If the amount is too large, in addition to waste, it may also hurt the balance of the water body.

It is best to use small amounts several times. It is usually used once every 8-10 days and once every 5-6 days on high temperature days. In addition, the volatilization of the persulfur effect generally does not exceed 3 hours.

If you don't get it done in 3 hours, don't expect it to play any more heat. But after the effect comes out, there is also a period of time to wait for the reaction of the water body and the shrimp and crab.

Persulfur products are acidic and should not be used with alkaline sanitizing products. At the same time, persulfur has a bactericidal effect, so it should not be used with fungus products. If you are in a hurry to use other products, it is recommended to wait at least 12 hours.

When used as a base modification with other products at the same time, try to use it at least at the same time before using it with all other products. In addition, after using sulfur for two or three days, try to supplement some beneficial bacteria.

Potassium persulfate complex salt (potassium monopersulfate salt, potassium monopersulfate) is a stable, convenient, and excellent acid oxidant with a wide range of uses, and its application fields involve oral cleaning, swimming pool and hot spring water disinfection, circuit board etchants, pulp bleaching, wool fabric anti-shrinkage treatment, precious metal refining, etc.; Potassium persulfate complex salt is an important additive in organic synthesis, which can epoxidize the double bonds in organic molecules, and is a free radical initiator for many polymerization reactions. In addition, potassium bisulfate compound salt can be used as an oxidant of sulfur hydride and other sulfur-containing substances in wastewater treatment, a low-temperature oxygen-based bleach in detergents, and an oxygen supply in aquaculture.

Do not use industrial salts because they are toxic. Industrial salt is harmful to people, not to mention shrimp.

Industrial salt cannot be used in the process of shrimp farming and water transfer, and industrial salt is not allowed to be used in the process of farming.

The key depends on what you breed? What varieties of industrial salt? The industrial salt I came into contact with, also known as seawater salt, is the product of seawater primary processing, suitable for the addition of a small amount of aquaculture ponds, if it is a seawater tank to breed ornamental fish, it must not be used.

1. Grasp dredging and wilderness. All shrimp ponds that have been raised for more than a year, due to the accumulation of residual bait and feces in the pond, have made the pond water shallow, and the toxic substances have increased, so the shrimp seedlings must be carefully carried out with high standards and high quality before the shrimp pond dredging work, and the dredging area should reach 100% to ensure that the water depth in the pond is more than one meter. Bleaching powder is then used to "remove the wild".

2. Grab fertilizer and water bait, and cast seedlings in a timely manner. In late April, water was released into the shrimp pond to make the water depth reach meters, and kilograms of urea were applied per mu. The algae and rotifers in the pond multiply in large quantities to achieve the purpose of fertilizing and reproducing the basic slippery bait.

Around May 20, an appropriate amount of seedlings should be cast, 3 to 40,000 seedlings per mu, and disease-free and robust shrimp seedlings must be put in. 3. Regulate water quality. In the early stage of shrimp growing, the number of water changes is less.

When the transparency of the pool water drops to 15 cm 20 cm, the water should be changed once, and the amount of water changed accounts for 1 2 of the pool water. In the middle stage of growth, the water is changed every 10 15 days, and the amount of water changed is 1 4 of the pool water. The method of changing the water is to drain the bottom water from the pool first, and then add new water.

It is necessary to prevent the drainage of the other side, and the mixed water shrimp that enter the water on this side do not carry out large drainage and irrigation in the flood season when there is more rainfall in Xiangrula, but drain the fresh water on the surface to ensure that the salinity of the pool water is relatively stable. 4. Catch reasonable bait. It is necessary to make a homemade push net, take a sample of 50 to 100 fish every 5 o'clock in the morning, and carefully observe the stomach and growth of the shrimp.

At the same time, the survival of shrimp in the pond was measured with a rotary net, so as to know what to do and feed the bait reasonably. Feed 6 times a day in the late stage of shrimp growing, before sunrise and after sunset, feed 40 per day, and feed rubber every 4 hours at night, accounting for 60 per day. The amount of bait per day accounts for 80 around the pond and 20 on the beach.

However, when the water temperature in the pool exceeds 30, do not feed the bait, when the dissolved oxygen in the water is less, do not feed the bait, do not feed the bait when the water quality deteriorates, do not feed the bait when the fog atmospheric pressure is low, and do not feed the bait 1 hour after injecting new water. 5. Grab to prevent floating heads. It is necessary to adhere to regular observation, strengthen water quality monitoring, improve disease prevention and control technology, timely and accurately analyze and grasp the water situation, pool situation, weather situation, and shrimp situation, so as to achieve early detection and early prevention.

When midges and small fish are found, it means that there is a lack of oxygen in the water, which is a precursor to the floating head of the shrimp. At this time, it is necessary to invigorate the water day and night, and can also engage in artificial waves, artificial oxygen, ice cooling, and oxygenators. Bait should also not be given in the second half of the night when there is a lack of oxygen.

It is important not to notice that the floating head stirs up the sediment, which will only exacerbate the death of the shrimp. 6. Catch shrimp and fish polyculture. Adhering to the polyculture of shrimp and shellfish and the polyculture of shrimp and fish not only greatly improves the utilization rate of pond area and feed, reduces the cost of shrimp farming, but also is conducive to the development and growth of shrimp, improves the output of shrimp, prevents the death of shrimp floating heads, and increases the efficiency of shrimp ponds.

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