CATDOLL : CATDOLL: How to keep saltwater shrimp? What is the water temperature? How to deal with salt?

1. How to keep saltwater shrimp alive? What is the water temperature? How to deal with salt?

The water temperature it adapts to is 10-37℃, and the optimal temperature for its growth is 17-32℃. The suitable salinity is 3.5%, and it has a wide range of adaptability to salinity. It can grow in fresh water and can also survive in seawater with a salinity of more than 35‰. It has a strong tolerance to low dissolved oxygen. It can live normally in water with a pH value of 7.0-9.0.

5 days after seedlings are planted, well water should be added to the shrimp pond. Water should be added once every 2 days, and 5 cm of water should be added each time until the shrimp pond reaches the water storage depth. The pond should be filled with water in hot summer weather. Water should be added to the upper limit of the shrimp pond 1 to 2 days before the rainstorm, so that the falling rainwater will naturally overflow through the upper edge of the gate to prevent the rainwater from salinizing the shrimp pond and causing a sharp drop in pH value, which will affect the growth of shrimp or cause shrimp death.

Additional information:

Living Environment:

Respiration and circulation The gills of shrimp are located in the gill chambers formed on both sides of the carapace. The gill chambers are connected to the outside world from the front and back and the ventral side. The gills are mostly feather-shaped, with a total of 25 pairs, attached to the side walls of the chest or the base of the thoracic limbs. The epidermis is extremely thin, and gas exchange is carried out when blood flows through the gills. There are jaw boats in the gill chambers that constantly swing, allowing fresh water to enter from the back and ventral side and flow out forward.

The circulatory system is an open-tube type. The heart is a flat polygonal muscular sac located in the pericardial sinus on the dorsal side of the head and thorax. There are four pairs of cardiac holes, two pairs on the back, one pair on both sides of the back end, and another pair on the ventral side of the heart near the back end. There are valves to control the direction of blood flow.

How to keep saltwater shrimp alive? As long as the water quality meets the breeding requirements, you can keep them alive.

What is the water temperature? Different species of shrimp require different temperatures. Common ornamental shrimps require about 25 degrees, and common edible shrimps require 15 degrees.

How to adjust the salt? Use a salinometer to measure the specific gravity of the salt water to between 1.022 and 1.025.

2. Can I raise whiteleg shrimp using pure seawater without fresh water to replace it?

It is difficult to raise fresh water, and it is easier to raise

Living habits:

The white shrimp has a thin shell and a fat body. It has delicious meat, high meat content and rich nutrition. The white shrimp has strong adaptability. Its natural habitat is muddy seabed with a water depth of 0-72m. It can grow in waters with a salinity of 0.5-35‰. The allowable salinity range of 2-7cm juvenile shrimp is 2-78‰. It can survive in waters with a water temperature of 6-40°C, a growth water temperature of 15-38°C, and an optimal growth water temperature of 22-35°C. The maximum tolerance to high temperatures is 43.5°C (gradient amplitude), and its adaptability to low temperatures is poor. When the water temperature is below 18°C, its feeding activity is affected, and it lies on its side at the bottom of the water when the temperature is below 9°C. It requires fresh water quality, a dissolved oxygen content of more than 5mg/L, and a minimum tolerable dissolved oxygen content of 1.2mg/L. It can survive out of water for a long time and can be transported over long distances. The adapted pH is 7.0-8.5, and a low ammonia nitrogen content is required. They can live in seawater, brackish water and freshwater. Newly hatched planktonic larvae and shrimps feed and grow in low-salinity areas (4-30%) in the shallow seas of Jingzhou with soft muddy bottoms near estuaries and coastal lagoons, which are rich in bait organisms. When their average body length reaches 12 cm, they begin to migrate to the offshore. They migrate in large numbers at the lowest tide of the month, which is the same as the time of the full moon and the new moon. Under breeding conditions, they usually stay still at the bottom of the pond during the day and become active after dusk.

In farming, whiteleg shrimp has the advantages of large size, fast growth, low nutritional requirements, strong disease resistance, strong adaptability to changes in water environmental factors, low requirements for feed protein content, meat yield of over 65%, and long survival time out of water. It is an excellent variety for intensive and high-yield farming, and is also the shrimp species with the highest single yield among the three major farmed shrimps in the world.

Haihong Zhongya water is very good and has high yield, while fresh water has low yield. It does require technology, water temperature, feeding amount, water change amount, prevention of Vibrio, there are many things in it, test the water quality before breeding! I think you should do a Vibrio test first, and it is best to bury the groundwater without pollution. Then there are constant elements, the sodium-potassium ratio is very important. Some people say that if there is salinity but the potassium content is very low, it is easy to overturn when the seedlings are released.

In my area, the success rate of shrimp farming in pure seawater is very low, but the success rate with fresh water is very high.

Difficult! It is OK to grow without changing water or draining water, but don't put too many seedlings! One seedling can cost 10,000 to 20,000 yuan

Seawater is very easy to raise fish… I have been raising fish in pure seawater for three years…

3. Shrimp farming is very widespread. What are the environmental conditions for shrimp farming?

Shrimp farming is very common. What are the environmental conditions for shrimp farming?

As the shrimp market and market conditions have been promising, many farmers and unemployed workers have the idea of ​​raising shrimp, but because they have no experience in raising shrimp, they are also very anxious. The beginning is difficult, and the warrior profession does not fight a war without a plan, so we only need to fully understand these fields in advance and ensure that we are prepared to a certain extent, so there is no need to be too afraid.

What standards are required for shrimp farming?

The quality of water can directly affect the healthy growth and development of lobsters. During the breeding process, the pH value of the water surface is maintained between 7.5 and 8.5, and the clarity is 30cm to 40cm per hand leak. It is necessary to fill it with tap water frequently, sprinkle saturated solution of quicklime powder regularly, adjust the water body, and prevent the occurrence of diseases and pests and failure of shelling.

Feed effectively. Lobsters will rot when they are hungry or have insufficient food, and will kill each other, so the amount of feed must be sufficient. Lobsters are fed with animal and plant feed. Natural feed is wheat, aquatic plants, rapeseed cake, etc., and livestock feed is miscellaneous fish, miscellaneous meat, and livestock organs. Usually, the feeding time, feeding amount, and feeding method are determined according to the black and white growth habits of lobsters and the relative density of shrimps in the pond. Otherwise, it will increase feed costs and reduce the economic benefits of breeding.

Scientific and reasonable fishing. In the whole process of lobster farming, if the temperature is suitable and the feed is sufficient, the young shrimp can generally grow to commercial size in 60 to 90 days. The young shrimp are released in March, and the rotation fishing begins around June, catching the big ones and leaving the small ones. By catching the big ones and leaving the small ones, and rotating the fishing and releasing, the recapture rate can be increased, the selling price can be good, and the goal of increasing production efficiency can be achieved.

The natural environment of shrimp growth

Shrimp swimming is very different from fish. Fish can move forward by shaking their tail fins, but shrimp do not have tail fins like fish, only a small tail and a lot of calves, so how do they swim? Shrimp also has its own "admissions". Shrimp is a good swimmer and can use its legs to swim long distances. When it swims, these swimming feet are constantly aligned and slide backwards like paddles, and the body is slowly pushed forward. When it is overwhelmed, its lower abdomen stretches and flexes quickly, and the tail slides forward and downward, and it can continue to move backwards at a very fast speed. Some shrimps are not good at swimming. Lobsters spend most of their time crawling on rocks in the deep sea.

The gills of the grass shrimp are located in the gill chambers formed on both sides of the carapace. The gill chambers are connected to each other from front to back and from side to side as well as from the ventral side to the outside. The gills are mostly palm-shaped, with a total of 25 pairs, attached to the outer wall of the breast or the tip of the thoracic limbs. The outer skin is very thin, and air is exchanged when the blood passes through the gills. There are maxillary boats in the gill chambers that continuously swing, allowing fresh water to enter from the back and ventral side and be discharged from the front. The circulation is open tubular. The heart is a flat heptagonal muscular sac located in the pericardial sinus between the head and thorax. There are 4 pairs of cardiac holes, two pairs on the back, one pair on the sides of the back, and the other pair on the ventral side of the heart near the back. There are valves to control the blood flow.

Nutritional analysis of shrimp

Shrimp is rich in nutrients, and its meat is soft and easy to digest. It is a good food for people with weak constitutions or those who need to recuperate after illness. 2. Shrimp is rich in magnesium, which plays an important buffering role in cardiovascular activity and can protect the endocrine system well. It can reduce the cholesterol content in the blood and prevent myocardial infarction. At the same time, it can also dilate the coronary arteries, which is beneficial to prevent hypertension and myocardial infarction.

Shrimp has a strong lactation effect, and contains phosphorus and calcium, which is especially nourishing for children and pregnant mothers.

Scientists at Osaka University in Japan have discovered that astaxanthin in shrimp helps eliminate jet lag caused by time difference reactions.

No matter what kind of shrimp, they are rich in protein and have high nutritional value. Their meat is as soft as fish, easy to digest, and has no fishy smell or bone hyperplasia. At the same time, they contain sufficient minerals (such as calcium, phosphorus, iron, etc.). Sea lobsters also contain iodine, which is extremely beneficial to our health. According to scientific and reasonable analysis, the edible protein content of shrimp accounts for about 16-20%.

The condition is that you must choose some water resources with relatively clear water quality, there must be oxygen machines around, there must be some aquatic feed, there must be aquatic plants, and the water temperature must be controlled at 8℃.

First of all, you should choose shrimp fry that are relatively strong, free of disease and injury. Then when feeding them, you should ensure that the nutrition is comprehensive, and you should change the water regularly to ensure the cleanliness of the shrimp pond, which can prevent various diseases.

It is best to breed them at the seaside and introduce some seawater. Some seaweed and silt should be added during breeding. The temperature should be kept at around 20 degrees and never too low. The fish pond should be cleaned and disinfected regularly.

Keep the water temperature above 20℃, add some salt to the water, pour in fish feed, prepare fresh water, and clean the silt in the pond. These are all breeding conditions.