Tips Affecting the Feed Mixing Machine

The main factors affecting the mixing uniformity of compound feed are: the mixer, the main physical properties of the material to be mixed, the filling amount of the mixer, the mixing time and the specific operating conditions.

 

1. The influence of mixer on mixing

In general, the mixer performance:

1. High mixing uniformity, no dead angle, less material residue;

2. The mixing time is short, the production efficiency is high, and it is matched with the whole unit (including connection and power matching);

3. The structure is simple and sturdy, the door switch is flexible, the operation is convenient, and it is convenient for testing, sampling and cleaning;

4. With suitable power matching, it can work normally under full load;

5. On the premise of ensuring the mixing quality, the energy consumption is low.

 

The models of mixers can be divided into many types according to different classification methods, mainly including horizontal, vertical, horizontal paddle, drum, left and right, planetary, rotating container, V, double cone, etc. There are two types of intermittent working type (batch type) and continuous working type. The product manufacturing level of different mixer manufacturers will definitely have advantages and disadvantages. When purchasing a mixer, you should choose a mixer with a higher manufacturing level according to your own production needs.

 

Different types of mixers have different mixing methods, and practice has proved that some mixing objects (materials) have the best mixing effect in a certain way, so it should be achieved according to different mixing objects and the mixing goals required by the producer itself ( effect) to choose different types of mixers.

 

It is difficult for the paddle mixer to mix the powder evenly, but when the feed needs to be added with molasses, and the addition amount is as high as 30%-40%, it is quite suitable to use this mixer for mixing; while the double cone The V-type mixer and the V-type mixer are more suitable for mixing materials with good fluidity and poor fluidity, respectively. If the particle size (thickness) between the mixed materials is close, a vertical mixer should be used, and when the particle size difference between the mixed materials is large, a horizontal mixer (and a rotary container mixer cannot be used) should be used; if If the residual amount is less, a horizontal or rotating container mixer should be used.

 

In addition, if the mixing requirements are high, the rotary container mixer should be used, but its production capacity is generally low; while the mixing effect is generally required, vertical, horizontal or continuous mixers can be used. production capacity is relatively high.

 

The level of mixing efficiency, the length of mixing time, and the speed of mixing are mainly determined by the model of the mixer and the manufacturing accuracy of the equipment itself. Generally speaking, the time required for uniform mixing in a horizontal mixer is relatively short, while that in a vertical mixer is longer. Of course, the length of the mixing time also depends on other factors such as the type of raw materials and their physical properties.

 

2. The influence of the main physical properties of the mixed materials on the mixing

The closer the main physical properties of the mixed materials, the smaller the separation tendency, the easier it is to be mixed uniformly, the better the mixing effect, and the shorter the time required to achieve uniform mixing. Physical properties mainly include particle size, shape, bulk density, surface roughness, flow characteristics, adhesion, moisture content, fat content, pH, etc. of the material. The material particles with high moisture content are easy to agglomerate or form agglomerates, and it is not easy to disperse uniformly, and the mixing effect is not satisfactory. Without affecting the required effect of the formula, if necessary, an appropriate amount of silica, precipitated calcium carbonate, etc. can be added, which is beneficial to improve the mixing effect.

 

Some additives in the feed need to be premixed with a carrier (or diluent) before being added to the mixer to make an additive premix, and then added to the mixer in a certain order to mix with other components. The particle size of the additives that need to be diluted is generally finer, so a carrier with a particle size and density close to it should be selected. Suitable carriers include commonly used feed ingredients, such as soybeans, wheat bran, defatted rice bran, etc. Generally, materials with fine particle size, no dust, and affinity for the active ingredients in the additive are selected as diluents (or carriers), which are suitable. The choice of neutral materials is conducive to maintaining the stability of vitamins and other active components.

 

3. The influence of the filling amount of the mixer on the mixing

The mixer mainly relies on three mixing methods of convection mixing, diffusion mixing and shear mixing to make the material move in the machine to achieve the purpose of mixing the material evenly. Important prerequisites for obtaining the desired effect. If the material is loaded too much, the mixer will be overloaded, and more importantly, the excessive amount of material will affect the circulation process of the material in the machine, resulting in a decrease in the mixing quality; if the material is too small, it will not be sufficient The efficiency of the mixer is used, energy is wasted, and it is not conducive to the flow of materials in the mixer, which affects the mixing quality.

 

Various types of feed mixers have their own reasonable filling coefficients. Their respective reasonable filling coefficients have been obtained in the laboratory and practice. Among them, the batch (intermittent) horizontal ribbon mixer has its filling coefficient Generally, 0.6-0.8 is appropriate, and the highest material position should not exceed the plane of the top of the rotor; the filling coefficient of batch vertical screw mixers is generally controlled at about 0.6-0.85; drum mixers are about 0.4; planetary mixers It is about 0.4-0.5; the rotary container mixer is about 0.3-0.5; the V-type mixer is about 0.1-0.3; the double-cone mixer is about 0.5-0.6. The filling coefficient of various continuous mixers is not the same, generally controlled at about 0.25-0.5, not more than 0.5.

 

4. Appropriate mixing time

In most compound feed production lines, the most commonly used mixers are basically batch type, and for batch type (batch type) mixers, there is also a problem of optimal mixing time. If the mixing time is too short, the material will be discharged without being fully mixed in the mixer, and the mixing quality will definitely not be guaranteed. However, it is not that the longer the mixing time, the better the mixing effect. Experiments have shown that any material with good fluidity and uneven particle size has a tendency to separate. If the mixing time is too long, the material will be excessively mixed in the mixer. It will cause separation, which also affects quality and increases energy consumption. Because in the mixing process of materials, mixing and separation are carried out at the same time. Once the mixing and separation reach a certain equilibrium state, the degree of mixing is already determined. Even if the mixing continues, the mixing effect cannot be improved. resulting in separation. The mixing time should be determined according to the combination of factors such as the model of the mixer and its manufacturing level, the physical properties of the material and the actual test results, which is not the same concept as the length of time required for the simple model itself. The mixer is used for a period of time, and various parameters may change, so it is necessary to check and test regularly, and adjust the time required for mixing correctly according to the inspection results.

5. Correct operation

For the production of additive premix, the stirring method should be gradually expanded from micro-mixing to small-volume mixing to medium-volume mixing and then to large-volume mixing. The correct order of adding materials should be: the components with large proportions are added first or most of them are added to the machine, and then a small amount and a small amount of components are added on top of it; among various materials, generally the components with large particle size are added. Add the mixer first, and then add the small particle size; when the specific gravity difference between the materials is large, generally add the material with a small specific gravity first, and then add the material with a large specific gravity.

 

For fixed container mixers, the mixer should be started first and then added to prevent the phenomenon of full load start-up, and it should be stopped after unloading; while the rotary container mixer should be started after feeding, first stopped, and then unloaded. For the V-type mixer, the materials should be fed from two feed ports respectively. Measures should be taken to minimize the influence of other factors on the mixing uniformity of the completed mixed materials: the mixed materials should be pressed into granules immediately, so that the various components of the materials can be fixed in the granules or directly packed in bags; avoid or minimize The transportation and drop of the mixed materials; the loading and unloading work after mixing should be minimized; the falling, rolling or sliding of the materials should be minimized; the storage bin after mixing should be as small as possible, and the conveying equipment after mixing should preferably be Belt conveyors.

 

In order to ensure the mixing quality, the running performance of the mixer should be checked regularly, lubricating oil is often added to the bearings and the joints of each movable shaft, and the wear parts should be repaired and replaced in time, and the optimal mixing time should be correctly determined according to the sampling inspection results of uniformity. Regularly check the operation of each switch, clean the sundries in the machine, remove the residual materials around the door switch, make the door switch flexible, and prevent the phenomenon of material leakage.

The mixer machine is important in the production line, and you can also go to see the feed drying machine .

Grinding screen on capacity of crusher and improvement measures

 1. Hole arrangement

The arrangement of sieve holes includes horizontal and vertical holes, both of which are equilateral triangles. The screen with horizontal holes is that the direction of material running is perpendicular to one side of the triangle. The vertical hole is that the running direction of the material is parallel to one side of the triangle. When selecting a screen with a large aperture (aperture>Φ4.0), the way of arranging the holes has no effect on the production capacity. Due to the high production capacity and the impact of the material on the screen, it is easy to choose a screen with vertical holes.

 

The vertical interval between the two holes just forms a strong support for the screen. When selecting a screen with a small aperture (aperture ≤Φ4.0), the decrease in the overall production capacity of the material also reduces the impact force on the screen. Therefore, a horizontal row of holes with no material incident blind area should be used. Practice has proved that when using small-diameter sieves, under the condition of the same opening ratio and the same thickness, the production capacity of the sieves with horizontal holes is 5%-10% higher than that of the sieves with vertical holes.　　

 

2. Sieve aperture ratio

When selecting sieves, give priority to meeting the requirements of product particle size, and then select sieves with high density and large aperture as much as possible according to the strength that the sieves can withstand. The relationship between the sieve hole diameter and the crushing particle size is generally: the strength of the finished product ≈ (1/4-1∕3) the sieve hole diameter. At the request of Liuhe Xinlong, we have achieved an opening rate of 45% for the Φ2.0 screen. The problem is that the opening ratio of the screen is increased, and the powder output efficiency is also improved, but the impact value of the screen is decreased. The cleaning of raw materials cannot be absolutely clean, and some larger sand and gravel can easily break the sieve, resulting in return material, which increases the production cost.

 

After several tests, on the basis of ensuring the original 42% high opening rate, the aperture on the back side of the screen was increased while the aperture on the front side of the screen remained unchanged. A kind of guide hole similar to ring die is formed. Use with the burr side facing the rotor. Because in the direction of the material flow, when the material passes through the screen hole, it collides with the edges and corners of the burr surface, which can play the role of friction and crushing, and can increase the screening capacity. At this time, the bell mouth increases the material feeding inclination, which just plays a role similar to the material guide hole of the ring die, and the crushing efficiency is significantly improved compared with the original screen.

 

3.Installation of screen

When the sieve is installed, the sieve with the required aperture of the material particle size is installed on the front side, and the sieve with a larger size is installed on the back side, which can not only meet the particle size requirements of the material but also improve the crushing efficiency. When the sieve is punched, microscopic dents will be formed on the positive side, the circumference of the sieve hole will become smooth and dull, and the cutting ratio will decrease. If the screen is installed with the anti-burr facing outward, it will also cause the material hanging at the burr to block the screen hole, which will affect the powder output efficiency.

 

4. Failure of the screen

Most of the damage to the screen is caused by foreign objects entering the crushing chamber. Small holes can be reused after repairing by welding. When there are many holes, the effective screen area of the repaired screen is greatly reduced, and then repaired. Use will lose the use value, only to replace the new screen.

 

When comet craters appear in the sieve hole, the cutting speed will be slower than that of dropping the powder. Even if there is no foreign matter, the sieve should be replaced. If it is used again, the wasted power consumption will far exceed the residual value of the sieve.。

 

5. Influence of temperature rise on production capacity during pulverization

The front-line employees who know crushing may have encountered such a phenomenon. When the crusher first started to work, the crushing speed was very fast. After working for one or two hours, the crushing speed has a slow downward trend. This phenomenon is more obvious especially when making small-aperture sieves for pig feed and fish feed. After the crusher is reversed, the production capacity returns to a state of high production capacity. That is because, after the pulverizer works for a period of time, the heat generated by the hammer hitting the material and the heat generated by the friction of the material colliding with the screen will cause the temperature of the pulverizing chamber to rise.

 

When the sieve is in such a harsh environment for a long time, the fatigue strength, surface hardness and cutting force decrease, which directly leads to a decrease in the powder yield. It is best to stop feeding at this point and let the grinder run idly for a few minutes. In a few minutes, under the action of negative pressure, the temperature of the crushing chamber can be lowered and the production capacity can be restored.

So you can see the feed crusher machine in LIMA.

Performance of poultry poisoning caused by excessive heavy metals

 The heavy metal elements polluting animal-derived feed products mainly include lead, arsenic, cadmium, chromium and mercury. Bone meal and meat and bone meal may often contain a large amount of lead, arsenic, cadmium and other elements; feather meal and leather protein meal may contain a large amount of lead and arsenic, in addition, leather protein meal often contains a high amount of chromium; fish meal and other aquatic products In addition to a large amount of lead, arsenic, cadmium and chromium, the organism may also contain a large amount of mercury.

1 Fluorine

Bone meal, meat and bone meal and other animal-derived feed products may contain a large amount of fluorine to varying degrees due to different origins and raw materials. Animals raised in natural fluorine-rich areas and industrial fluorine-contaminated areas can accumulate a large amount of fluorine in their bones. Products made from such animal raw materials must contain high fluorine content. Long-term and large-scale use of such products can cause chronic chronic diseases in livestock and poultry. So you can use the floating fish feed machine.

      2 nitrite

      According to foreign reports, sodium nitrite has been used as a preservative in the production of fishmeal. If the amount is too large, it can lead to nitrous acid poisoning in feeding animals, which may be transformed into dimethylnitrosamine, a carcinogen. Ji Zhenyang (2005), He Jin (2006) and other relevant experts reported that when toxic elements exceed the standard, there are the following toxic manifestations.

3 Chrome

① Combines with nucleic acid and nucleoprotein in animals, affecting the phosphorus content in tissues; ② Reduces the activity of amylase and prevents cysteinase oxidation; ③ Impairs the function of red blood cells to carry oxygen, causing lung cancer, especially lysis Chromium compounds, which are acid insoluble in water, are more dangerous.

4 Cadmium

①Reduce the weight gain and feed conversion rate of broilers; ②Cause anemia in pigs, cause sheep anemia and renal dysfunction; ③Cause sperm inactivation in male animals; , Humoral immunity has inhibitory effect, reducing animal immunity.

5 Arsenic

①Combined with the sulfur group of pyruvate oxidase, making the enzyme inactive, affecting the normal metabolism of cells, leading to cell death; ②Harming nerve cells, causing polyneuritis and central neurasthenia, paralyzing capillaries, and causing tissue nutritional disorders; ③ The International Agency for Research on Cancer announced that arsenic is a carcinogenic factor; ④ acute arsenic poisoning can make animals die in a short time;

6 lead

①In the early stage, the excitation and inhibition process of the cerebral cortex can be mildly disturbed, and in the later stage, serious disorder occurs, causing the dysfunction of the sympathetic and parasympathetic nervous systems; ②Interfering with hemoglobin synthesis; ③Causing intestinal paroxysmal spasm or paralysis; ④Causing interstitial nephritis , Kidney atrophy, reducing animal immunity; ⑤ It can enter the lactating young animals through milk, causing harmful effects; ⑥ It can enter the fetus through the placenta and endanger the fetus.

7 Fluorine

①Causes the reduction of egg production of poultry, the fertilization rate and hatching rate of breeding eggs; ②Causes the decline of immunity of farmed animals; Inhibits the activity of oxidase and dehydrogenase, affects metabolism, and causes animal weight loss and anemia; ③Causes bone nutrition Bad, skeletal fluorosis, joint stiffness, tooth coloring, enamel damage; ④ cause cardiovascular disease, gastric cancer, lung cancer, and even death.

Welcome to see LIMA Machinery.

Start shrimp farming at home-rising shrimp indoor

 Why Indoor Shrimp Farming?

Shrimp, often called decapoda crustaceans, are widely available everywhere at a fraction of the price. Many shrimp muscle tails are edible to humans, and they are widely harvested and farmed for human consumption. Shrimp is not only delicious, but an excellent source of iron, calcium, sodium, phosphorus, zinc, magnesium and potassium for vitamins A, E, B6 and B12.

Increased demand for seafood is one of the main drivers of growth in the global shrimp market. The global shrimp market is expected to grow over the forecast period as consumers around the world switch to healthier diets because seafood is considered a healthy source of animal protein.

Consumer demand for fresh and frozen seafood is also a major contributor towards the growth of the global shrimp market. So, starting a shrimp farming business is highly lucrative for the entrepreneurs who want to start an aquaculture project.

 

The ability to control temperature, avoid airborne diseases and control all environmental factors allows indoor systems to produce more consistent growth and higher yields. This is for the same reason as moving chicken, pork and milk production indoors.

 

Indoor systems must overcome some traditional limitations as well as new ones. First, the production unit must be much smaller in order to simply fit inside. This is a surprising advantage for indoor systems. Smaller systems are inherently easier to manage, preventing unnecessary problems. When the tank is only 12 feet wide instead of an acre, it’s easier to detect and mitigate problems. For example, a typical problem might be uneaten or accidental death from infection. If both dilemmas are detected early on as reversible, the potential negative impact on water quality and existing shrimp can be avoided. In the field of large tanks and ponds, it is almost impossible to detect these problems before causing significant damage.

 

Machines for Making Shrimp Feed

Through the fish feed extruder we can use cheap local raw materials to produce high-quality feed according to the nutritional needs of shrimp, which may save your feed breeding costs. 

  

It is a good idea to start farming intelligently. A smart farmer always considers the necessary costs and investments and tasks before he starts farming. Here’s your guide to understanding these tips and taking some time to think about them before you start your shrimp raising business.

 

Learn how many types of shrimps are there in the world and decide of them, which one can give you more profit? Also, learn the how much it cost to start a new shrimp farm, depending on the scale of your business. Also, think about the fodder, care, and management needed for the growing shrimps economically. Also, learn how to prepare shrimp nutritious fodder at home only? if you not much capital. Also, think of the space, cost, initial capital required for starting shrimp farming. Also, learn how to test your water to find out the elements present in it.Whatever is this, it is advised to take a visit to your nearest shrimp farm, if available to learn all these points in deeper and also better information about this. Maybe you can see the fish feed packaging machine.

 

How to Raise Shrimp at Home

Shrimp are a popular addition to aquariums, but they are also a popular cash crop. The price of shrimp has been high compared to other seafood. Many people raise shrimp at home in small or large ponds, make their own tables or sell them as seafood crops. With a little time and effort, you can use some simple guidelines to grow your own shrimp.

 

Buy baby shrimp from specialty retailers. Buy shrimp 30 to 60 days old to ensure you get healthy shrimp. Start your shrimp tank in early June to take advantage of the shrimp’s summer growing season.

 

Set up your shrimp tanks

Allot 10 shrimp per 20 gallons of water to give shrimp adequate personal space. Set up a pump and filter system; line the aquarium with substrate and provide rocks and plants for shrimp to hide. Put the heater and thermostat in the aquarium, and fill it with dechlorinated or distilled water. Turn on the pump, filter and heater, and give the tank 24 hours to settle.

 

Monitor tank temperature and adjust heater accordingly. Keep the shrimp at 76 to 88 degrees. Temperatures below 60 degrees or above 97 degrees kill the shrimp.

 

Place the shrimp in the tank. Feed shrimp fish or shrimp food once a day, keeping the water warm and transparent. The shrimp will grow throughout the summer and be ready for harvest in September or October.

 

And go to see the lima fish feed machine which can help you a lot.

Goldfish Tank Size Guide

Size does matter. Yes, the bigger the better. If you can afford a huge artificial pond in your backyard, the best is yet to come. For the rest of us, the aquarium is the best home for our goldfish.

Here are the parameters that determine the size of the tank you need:

The size and age of a goldfish

When you buy goldfish from a pet store, make sure they are young, so they too have a lifetime to grow. You can also start with a smaller aquarium. However, the obvious disadvantage is that you will need to upgrade to a larger tank as the goldfish continues to grow.

The potential size of a goldfish

There is a legend about the size of goldfish. Goldfish grow with the size of their environment. Indeed, if you put one goldfish in a tank and another goldfish in a pond, there will be far more goldfish in the pond than there are fish in the tank. However, this is not because goldfish grow in the environment. It’s because the environment, or the lack of an optimal environment, prevents the goldfish from growing. Therefore, you must take into account the potential size of the goldfish.

For example, a black Moorish goldfish can grow up to 6 inches naturally. Therefore, a 30 gallon /114 liter tank is best for keeping two goldfish. The average goldfish, however, can grow to more than a foot long. So you have to take that into account. The exact number of cylinder parameters may not be hard and fast, but many veteran goldfish enthusiasts believe that 4 times the potential size of the goldfish is the most appropriate length.

Types of goldfish and the number of goldfish

It goes without saying that the more goldfish you have, the bigger fish tanks you’ll need. Goldfish, on the other hand, can grow quite large over a period of years. So, don’t buy 7 goldfish on the first try. Be a miser.

Also, keep in mind that the thinner, ordinary goldfish grow larger than the round, fancy goldfish. Therefore, you will need a larger tank to keep regular goldfish.

Conclusion

After reading a truckload of information, you might not know, ‘So what size aquarium do I need?’ But if you still put a gun to my head and ask me the same question, I would suggest that if you want your goldfish to grow healthily, start with a 75-to 125-gallon tank. Keep the quantity to a minimum. Don’t keep all kinds of goldfish in an aquarium. Keep size to a maximum and quantity and variety to a minimum until you become more experienced.

The size of Common and Comet goldfish tank

For general goldfish and comet goldfish, we recommend tanks at least 4 feet long with a capacity of at least 30 gallons. Of course, this is the bigger the better! So more than that is also good.

If you plan to keep more than one goldfish in your tank, add 12 gallons for each additional fish.

Fancy goldfish tank size

For fancy goldfish, we recommend a tank at least 3 feet long and a capacity of at least 20 gallons.

If you plan to keep more than one goldfish in your tank, add 10 gallons for each additional goldfish.

Any questions about the goldfish, you can come to lima contact and leave your message.

How to start fish hatchery business in Nigeria?

Nigeria’s aquaculture industry is indeed growing at a very fast rate, making fry hatching a good investment. Among other obstacles facing Nigeria’s fisheries, the lack of viable fry and young fish has been a major setback. In the past, fish farmers have relied on wild fry and young fish as a way to keep them in ponds. It is not enough to build a business; your farm management must be first class.

This is no longer sustainable because of the dramatic increase in demand for fish. Since most fish breed seasonally, there is a shortage of stocking materials. Fry operations are the only solution to this huge obstacle in Nigeria’s fish farming industry. Local and international demand for fish has been on the rise. This makes fish farmers very dependent on fish farms to provide them with a constant supply of stocking materials. In this article, you will also learn about other fish farming techniques in Nigeria. Your fry hatchery must be designed in a way that benefits the fry.

Machines For Making Fish Feed

Fish feed extruder is a necessary equipment for small and medium-sized fish farms and fish feed processing plants. Through the fish feed extruder we can use cheap local raw materials to produce high-quality feed according to the nutritional needs of fish, which may save your feed breeding costs. Floating Fish Feed Extruder Sinking Fish Feed Extruder

Requirements for Nigerian fry incubation operations

The requirements are the same whether the fish farm is to supply your farm or for commercial purposes. You’ll be surprised at the cost of a fish farm, some of the main requirements of a fish farm business include.

Water

The importance of water to the fry business cannot be overemphasized. The water used for fry hatching operations must be continuously monitored to check for any negative changes.

In Nigeria, water used in fry hatching operations must have a constant neutral pH, be well treated and inflated.

Feed supply

Young fish used for fry hatching and young fish must be fed regularly to avoid malnutrition. Young fish feed on plankton, although in confined environments the plankton supply may be limited.

If you want to do a fish hatching business in Nigeria, you have to find a way to encourage the growth and proliferation of plankton in your fish ponds. You can also provide feed to provide the nutrients your baby fish or young fish need. You can buy feed from any aquaculture feed store in Nigeria.

Fish farming

To be successful in Nigeria’s fry business, your farm must have fish. You must purchase sexually mature males and females that have favorable characteristics to serve your fry career. Mature fish must have a good history and grow quickly.

The market

If you don’t have a market to sell your product, you don’t have a business. To make your business a success, you should make sure that many fishmongers know about your business and are willing to patronize it.

Welcome to see Lima Machinery which can give you some help in fish feeding.

Do you think fish ponds need vitamin supplementation?

Hello:

Fish ponds need vitamin supplementation, 6 grams of oxytetracycline tablets and 3 grams of vitamin C tablets are used per cubic meter of water body, the tablets are ground and mixed, mixed evenly, and fed twice in the morning and afternoon. Feed half the amount from 2 days, and continue to feed for 3 days.

 

The water quality control technology of aquaculture ponds is based on the pond ecology. According to the annual and seasonal variation laws of ponds and water quality, comprehensive artificial control of aquaculture water quality is carried out in the process of aquaculture.

 

The water temperature is low in winter and early spring every year, and the ponds can be sorted out, including dry ponds, freezing and drying, and dredging. During the breeding process, most of the nitrogen is removed, while the carbon is synthesized into humus and retained. In dry ponds and sun-dried ponds, aerobic microorganisms need a lot of nitrogen. Greatly increase the decomposition rate of organic matter, improve the effect of drying ponds, and shorten the drying pond time. For overwintering aquaculture ponds, the water level should be kept high in winter, the ice should be broken or the snow on the ice should be removed in time, and the dissolved oxygen content in the water should be maintained and improved. Change the pond water in time in early spring to improve the water quality of aquaculture.

 

At the same time, adding new water in early spring can also play a role in fertilization, because after various organisms die in winter, their nutrients are released into the water, which increases the nutrient content in the water. Adding water to the pool water can supplement nutrients and promote plankton reproduction. , increasing the amount of dissolved oxygen and prey organisms in the water. When stocking fish fingerlings in spring or autumn, an appropriate amount of filter-feeding fish such as silver carp and bighead carp should be raised to adjust and improve the water quality of aquaculture.

 

From spring to early summer (March to June), the water temperature continues to rise, and from autumn to early winter (September to November), the water temperature continues to drop. In these two alternating seasons, the water temperature fluctuated at 15-25°C or slightly higher, the temperature difference between day and night was large, the upper and lower convection exchange of the water body was good, and the water quality was in a benign change. According to the different main objects, proper topdressing and feeding can form good water color and water quality. Therefore, these two alternating seasons are the seasons in which farmed animals grow faster, and are also easy to spread diseases and harmful organisms. It is a season that is easy to grow. Therefore, in these two periods, especially in the crossover stage, it is particularly important to control water quality by injecting new water frequently and using symptomatic drugs to prevent diseases.

From July to August in summer, the water temperature is high, often fluctuating around 30°C, and the temperature difference between day and night is small, and the convective exchange between the upper and lower water bodies is poor. The phenomenon of factor stratification is obvious, and the ecological conditions of the pond are very poor.

 

In addition, the rapid growth of animals in the spring, the increase of the load of the pond, and the accumulation of nutrients in the pond, it is easy to form poor water quality and color during this period. In the event of sudden changes in weather (low air pressure, hot days, thunderstorms), the static state of the pond water will be broken, the water body will exchange violently up and down, and the water quality will be extremely deteriorated.

 

Therefore, it is necessary to manually control the water quality in high temperature seasons. First, stop using organic fertilizers and use chemical fertilizers smartly when fertilization is needed. Second, frequently inject or replace new water regularly, and urge the upper and lower water layers. Third, use an aerator to stir the water layer to increase oxygen, especially in high temperature and muggy weather, dawn and noon on sunny days, the aerator should be turned on to prevent floating heads or flooding of farmed animals. Fourth, cultivating an appropriate number of aquatic plants in the pond can absorb nutrients in the water body, purify and improve the water quality, and at the same time, it can block sunlight, reduce the temperature of the pond water, and facilitate the growth of animals.

So if you have a fish pond, you can learn the fish production line first, like the feed crushing machine, and fish feed extruder machine which will be used in the line.