Crayfish rearing problems. How to raise prawns?

I am raising these three kinds of crayfish, and I can share my experience for reference. The white crow grows the fastest, followed by the red crow, don't worry about the blue crow, the skin is the slowest, the red and white crow can mate, the blue crow can't follow them, if there is a shrimp house, it is best to have more obstacles, so as not to be attacked when changing the shell. The fish tank is smaller, change to a larger one, all paired, I heard that the shrimp should live for two years and should leave offspring, (*hehe......Let's talk about food again, love to eat aquatic weeds, bloodworms, buy live bloodworms back and put them in the bag and freeze them in the flat refrigerator is very convenient, the Internet says that feeding shrimp to eat celery increases vitamins, my shrimp don't like to eat, I feed my shrimp to eat carrots, cut carrots and slices shrimp to eat, nutritious and colored, white Ao eats yellow body, just change the shell.

Let's talk about the water quality, mine is a 450cm small aquarium, there is a filter and oxygen at the same time without heating, a week to change one-fifth of the trapped water, I use emery sand contains more minerals because the black highlights the color of the shrimp Accessories, scenery, lights, there are small fish are very beautiful. Anchovies reproduce quickly, raise their cubs together and feed them to shrimp. Speaking of which, I hope it helps, come on.

1. Observations.

1. Observe the water condition of the pool, dissolved oxygen and other water quality elements, and measure the dissolved oxygen and pH value in the pool before sunrise and 16 o'clock every day. It is best to measure the transparency once a day, and frequently detect the changes in the species and quantity of the memolars in the pool, and if possible, the changes in ammonia nitrogen and other water quality elements can be detected;

2. Observe the activities and distribution of shrimp;

3. Regularly inspect the shrimp body, pay attention to the discovery of diseased shrimp and dead shrimp, timely fish out the sick and dead shrimp, and check the cause of death;

4. Measure the growth of shrimp every 10 days. It can measure the body length of shrimp and can also measure body weight. Shrimp body length refers to the length from the base of the shrimp eye stalk to the end of the tail segment, and the random sampling of each measurement shall not be less than 50 tails.

No less than 50 shrimp can be fished out by measuring the weight, weighing the total amount at one time, and then calculating the average tail weight;

5. Observe shrimp feeding and feed utilization;

6. Regularly estimate the number of shrimp tails in the pool, 3-6cm small shrimp can use a small lifting net with a known area, lift shrimp in many places in the pond many times, estimate the number of shrimp in the pond with experience, and the shrimp with a body length of more than 6cm can be quantified with a rotating net. The net was laid at multiple points in the pond, and the shrimp were sampled according to the distribution in the pond. According to the number of shrimp caught, the number of shrimp in the whole pond is found by using the formula;

7. Pay attention to the safety of gates, ditches, ponds and dams, whether the aerator is operating normally, and pay attention to the safety of electricity during thunderstorms.

Second, bait matters.

1. Do not feed spoiled or toxic bait, and feed less plant-based bait with low potency;

2. The pond water is more fertile, and the pond with rich bait organisms is fed less, and the pond with thin pond water and few bait organisms is appropriately fed;

3. If the water temperature is higher than 30, it should be fed less and invested frequently; Feed more when the wind and the sun are warm; When heavy storms, rains, and cold snaps are attacked, they should be fed less or not fed temporarily;

4. Feed less on the day of a large amount of shrimp molting (can be reduced by about 20%), and feed more appropriately after two days of molting;

5. When there are more competing organisms in the pool, they should be fed appropriately;

6. The size differentiation of shrimp in the pond is serious and uneven, which may mean that there is a long-term lack of bait, and it should be fed appropriately;

7. When the water quality deteriorates or the hypoxic floating head occurs, it should be fed less, or even temporarily stopped, and measures should be taken to improve the water and then feed normally;

8. Dispersed feeding has a better effect than centralized feeding; Alternate feeding of multiple baits is more effective than long-term feeding of a single bait.

<> ornamental shrimp ornamental shrimp breeding and ornamental fish have a certain difference, ornamental shrimp need shrimp house or shrimp tube for its hiding, while ornamental fish need some aquatic plants, many aspects will be many different, so, in addition to what should we pay attention to when breeding ornamental shrimp? And how to raise ornamental shrimp?

1. There are two major categories of freshwater aquaculture ornamental shrimp

1. The size of small ornamental shrimp is about 3 cm, such as cherry blossom shrimp, crystal shrimp, Su shrimp and so on.

2. The crayfish series logo is with a claw, that is, a large pincer, ranging in size from 5 cm to 30 cm, such as mini orange claw, blue devil, white claw is also a variety of kinds.

2. There are two categories of pure white shrimp

1. There are platinum shrimp in the small shrimp;

2. There are white claws in the crayfish series.

Platinum shrimp can only grow 3 centimeters, and this size can reproduce, but there is a certain degree of difficulty. It's okay to mix and fight. Molting is left alone.

As long as there is a hidden environment in the tank, it mainly refers to the abundance of aquatic plants. The lifespan is about 1 to 1 1/2 years. Small shrimp do not require high space, the minimum 20 cm tank is OK, the key is that the water quality should be well controlled.

The white chela can grow up to 15 centimeters at the most, and can reproduce when it is more than 10 centimeters. Crayfish polyculture is more difficult, unless the tank is large and the space is large. In addition, each shrimp must have its own shrimp house or shrimp tube for the shrimp to hide in it, polyculture will definitely fight, and the life span can live for more than 2 years.

Ornamental shrimp3. Feeding methods

To raise high-quality ornamental shrimp, the most important thing is water quality. Ornamental shrimp have relatively high requirements for water quality, they are different from the general ornamental fish, it is very sensitive to water quality, under normal circumstances, the pH value of the water in the tank of the ornamental shrimp is between 5-8, and the kh value (relative hardness of water) is between 1-6. Moreover, the pH value, the condition of the KH value 1-2 is more appropriate.

When feeding, it is necessary to adjust the water quality standards of the fish tank according to the different needs of different ornamental shrimp

Ornamental shrimp also have high requirements for water temperature and are also very sensitive to changes in water temperature, so there are also high requirements for temperature control when breeding. Strictly speaking, ornamental shrimp are not suitable for high-temperature rearing, and it is reasonable to control the water temperature between 22-24 degrees Celsius under normal circumstances. When ornamental shrimp are in the breeding period, the water temperature should also be reasonably increased by 1-2 degrees.

When the water temperature reaches 25 degrees Celsius, it is the optimal temperature for incubating eggs.

To raise ornamental shrimp well, bait is still an important aspect. Shrimp are omnivorous, basically "vegetarian", and occasionally you can eat meat. Grains, grains, bloodworms, shrimp, moss, algae, aquatic weeds, minerals in the mud, special grains for freshwater shrimp, organic cabbage, etc., can all become food for ornamental shrimp.

Among them, spinach may be a popular food for shrimp. In the process of feeding ornamental shrimp, it is important to ensure that their food is nutritious and balanced. To reasonably match food to feed ornamental scared to death, a long-term single diet is also not good for the health of shrimp.

Ornamental shrimp is more fragile, it is best not to touch it with your hands during the breeding process, because there are a lot of bacteria on your hands, which is likely to make ornamental shrimp sick, and it should be noted that all ornamental shrimp will be attacked by other shrimp when they are shelled, and they should be isolated.

shrimp pond conditions; The water quality of the sea area where the shrimp pond is located should be clean, free of industrial wastewater pollution discharged from sugar factories, paper mills, starch factories, etc., the natural water depth is more than 60 cm, and the annual salinity change of seawater is not less than 1.

Inlet sluice settings; Due to the closed culture of earthen ponds, there is no need to receive water from the sea area in the middle and later stages, so the pond only needs to be set up with an inlet gate. Every 10 acres of shrimp pond is equipped with a 1-meter-wide inlet gate, the sluice chamber is equipped with 3 sluice slots, the outer slot is installed with a filter net, and the middle slot is equipped with a sluice, each sluice is about 20 cm wide, which is convenient for adjusting the water level of the shrimp pond, and the inner trough is equipped with a conical water filter net.

Preparation before seedling; Drilling a well on the shrimp pond and shrimp dam, the depth of the well must be able to meet the continuous water injection needs of the shrimp pond, and every 5 acres of pond is equipped with a water pump with a flow rate of 100 cubic meters.

After drying the pool, 10 cm of water is entered, 80 kg of quicklime is applied per mu, and when the quicklime is emulsified, the lime milk is splashed evenly with a shovel or bamboo rake.

After disinfection, the pool water is drained, and a 60-mesh sieve silk conical mesh bag (8 meters long and 100 meters long) is installed, and the bottom of the sluice groove is tightly plugged with a cotton cloth or sack to leave no gaps. For the first time water intake, 1 and 2 gates are retained at the bottom of the gate to prevent the excessive water flow from washing a large amount of sediment into the net bag and causing the net bag to break. 2 days 3 days to put the water into 60 cm to 70 cm deep, and then seal the gate tightly with clay to prevent the pool water from penetrating through the gap in the gate.

shrimp fry stocking; The stocking density is determined according to the water storage depth of the shrimp pond. The water depth is 1 meter, 10,000 seedlings per mu of Penaeus monodon, 10,000 seedlings per mu, and 10,000 seedlings per mu of Penaeus vannamei; The water depth is meters, 10,000 seedlings per mu of Penaeus monodon, and 10,000 seedlings per mu of Penaeus vannamei. Stocking Specifications (Body Length):

Penaeus monodon is 1 cm and Penaeus vannamei is 1 cm cm.

bait feeding; Bait feeding should be carried out in small quantities and multiple meals, feeding 3 times a day before the body length is 6 cm, and feeding 4 times a day after exceeding 6 cm.

water quality issues; After 5 days of seedling, start to add well water to the shrimp pond, add water once every 2 days, add 5 cm of water each time, until the shrimp pond reaches the water storage depth. In summer, the pool should be filled up in hot weather. 1 day and 2 days before the rainstorm, add water to the upper limit of the shrimp pond, so that the rainwater will naturally overflow through the upper edge of the sluice plate, prevent the rainwater from salinizing the shrimp pond, and the pH value will drop significantly, affecting the growth of shrimp or causing dead shrimp.

Disease control; According to the change of water color and the blackening of the bottom of the pond, the shrimp pond was disinfected and the substrate was improved. Insist on disinfecting the shrimp pond with bleaching powder every 15 days, and improve the substrate with zeolite (20 kg per mu) or lime residue. Every 15 days, a course of medicine is fed, each course of treatment is 3 days and 5 days, and the medicine is made with 3 vitamin C, 2 allicin and an appropriate amount of cod liver oil.

Shrimp farming technology includes seedling, feed feeding, water environment protection and so on.

1. Put seedlings. This link determines the survival rate of shrimp, mainly including the selection of shrimp seedlings, seedling testing, determining the density of seedlings, grasping the number of shrimp in the pond, seedling release methods, seedling protection and strong seedlings, etc. For example, the selection of healthy shrimp seedlings can be observed from the appearance, the healthy shrimp seedlings are neatly developed, the limbs are complete and clean, the muscles are full of transparency, the pigment in the appendages is normal, the stomach and intestines are full of food, the swimming is active, the ability to swim is strong, and there are no parasites and attached dirt outside.

Shrimp fry about 1 cm.

2. Feed feeding.

This link includes the selection of feed, the determination of the amount of feed, the feeding method, the supplementation of nutrition, the promotion of growth, the improvement of disease resistance, the feed feeding precautions and so on.

3. Water environment protection.

This link can be said to be the most important, mainly including sediment management and water quality management.

Precautions for farmed shrimp

1. The water quality is suitable. During the breeding period, the pH value of the pool water should be kept between, the transparency is 30 40 cm, and the new water is usually filled with new water, and the quicklime is regularly splashed to disinfect to adjust the water quality.

2. Reasonable feeding. Shrimp in the case of hunger and lack of food, there will be cannibalism, so the usual amount of feeding must be sufficient, the food is mainly animal feed such as trash fish, poultry offal, supplemented by plant feed, such as wheat Fujin, aquatic weeds, rapeseed cake, etc., every morning and evening are fed once.

3. Scientific fishing. In the process of shrimp farming, juvenile shrimp in the case of suitable temperature and sufficient feed, generally 60 90 days can grow to commercial specifications, if the seedlings are released in March, they will start fishing around June, adhere to the principle of catching large and small, and round fishing and release, so as to improve the recapture rate and achieve the purpose of high yield and high efficiency.

<> shrimp farming needs to pay attention to the construction of shrimp ponds, the regulation of water quality, the feeding of bait and daily maintenance. The shrimp pond should dig a deep pit in the low beach area on the edge of the sea fiber, disinfect it with quicklime and inject seawater to keep the water clean, properly put some plankton, and the bait is mainly based on various small organisms, pay attention to regular disinfection.

1. Build a shrimp pond.

If you want to breed prawns, you must first dig a shrimp pond with a depth of about 150 cm and the deepest place can reach about 200 cm in the low beach area by the sea, and after excavation, pat the wall of the compacted pit, pour water mixed with quicklime for disinfection and sterilization, and then pour it into seawater.

2. Regulate water quality.

The seawater in the shrimp pond must be clean enough first, there can be no large number of dead animal and plant remains, at least it must be relatively clear, and then it needs to be artificially adjusted, put in some marine plants and small plankton to maintain the ecological balance in the shrimp pond, and then you can inject the purchased shrimp seedlings into the shrimp pond.

3. Feed the bait.

Shrimp is omnivorous, wild shrimp diet is very wide, involving most of the small animals and plants, including plankton, carrion and microorganisms, etc., in the daily breeding is mainly to small shellfish, worms, plant feast of the detritus, newborn shrimp eat very little, generally can only eat some plankton.

4. Daily maintenance.

The vitality of the shrimp is still relatively tenacious, the general feeding food does not need a lot, relying on the natural adjustment ability of the shrimp pond Qingzhuyin can also live well on the shrimp, but after all, the shrimp pond is a relatively closed environment, the need to regularly replace the water body, the use of aerators to inject oxygen, adjust the pH value, etc., all need to be adjusted according to the actual situation.