Why does the crystal shrimp peel off the shell and become lighter in color

1. The reason for the whitening of crystal shrimp.

1. Light source. Some friends will have heard the doctor advise patients who are deficient in calcium, bask in the sun for a while every day, this is because from a biological point of view, a specific spectrum can promote the absorption of calcium by organisms, and sunlight has a certain role in promoting the absorption of calcium by the human body, so the doctor will suggest this, so whether the sunlight has an effect on the whitening of the crystal, yes, yes, because some experiments have proved that this method has a certain effect, some friends will ask if you can't put the shrimp tank on the balcony, yes, According to the successful whitening methods of many friends, 10,000k light source is basically used, because its spectrum and intensity are more in line with the principle of biological calcium absorption.

2. The hardness of water.

The hardness of the water will determine the speed of the shrimp body shelling, but I have done a lot of experiments, under the same conditions (light, feed, water pH value, breeding density, etc.), the higher the hardness, the whiter the shrimp body, my limit parameter is 33 German degrees, although this parameter is like walking a tightrope, but it can be determined that under such high hardness conditions, the whiteness of the shrimp body has reached almost the limit value, except for red, there is almost no transparent part in the middle, so according to the above my personal experiment, The hardness is directly related to the thickness of the white body of the crystal shrimp, but I remind you again that this kind of experiment has a certain danger, please imitate it carefully, because under the high hardness of 33, the crystal may not be able to shed its shell and die, which is only a limit experiment.

3. The pH value of water.

There are a lot of shrimp lovers who put a lot of new ADA mud, so the water is very sour (pH 5 or less), because ADA mud contains a lot of tannic acid.

Tannic acid causes calcium ions that dissolve in water.

Although the precipitation still exists in the water, the calcium after precipitation has existed as a solid, and the calcium in the solid form cannot play any role, so if the water is too acidic, the shrimp will be whitened.

Crystal shrimp. Second, the best method of crystal shrimp whitening.

In order to ensure the healthy growth of crystal shrimp, the quality of the water environment should be ensured first. Improve the hardness and pH value at about 7, you can control the whitening of dried shrimp, and you can add good quality maifan stone.

pH acidic times. At the same time, to ensure the right lighting, you can consider buying a UVB lamp. Of course, when buying crystal shrimp, you should choose those crystal shrimp with good physique, so that you can also appropriately reduce the whitening situation.

There are many reasons for the whitening of crystal shrimp, so we can not simply give light to solve the problem, only by analyzing the exact cause and prescribing the right medicine, can we perfectly deal with the situation of crystal shrimp whitening.

Are you sure that it becomes shallow after shelling, is it the so-called whitening, that is, it is not so milky white, thick white, but becomes transparent?

Normally, there are patterns in raising.

1. Because the shrimp grows in the process, its shell does not grow larger with its size, if it is not shelled, the space in the shell cannot fit its body, so every once in a while it is necessary to take off the hard shell, and then grow a new shell.

2. The body of the shrimp is very soft after it is just shelled, and there is only one layer of film on the surface of the shrimp, which will gradually harden over time.

The temperature is low, and the shrimp turn black mainly because of the polyphenol oxidase in the shrimpTyrosinegeneratedMelanin, and the shrimp head has more polyphenol oxidase, so this is the case. After taking it out of the freezer, it is put into the refrigerator to oxidize the polyphenol oxidase, so that the shrimp turns black and does not affect the eating.

The freshness of shrimp can be discerned from the following points:

1. The fresh shrimp body is deficient and curved.

The head and tail of fresh shrimp are intact, the head and tail are closely connected to the body, and the shrimp body is relatively straight, with a certain elasticity and curvature. Stale shrimp are loosely connected to the head and body, shell and flesh, and the head and tail are easy to fall off or separate, and cannot maintain their original curvature.

2. Dry the body surface of fresh shrimp.

The appearance of the fresh shrimp is clean, and it feels dry when touched by hand. However, when the shrimp body is about to deteriorate, the granular cells that secrete mucus under the carapace disintegrate, and a large amount of mucus seeps into the body surface, making it slippery to the touch. If the shrimp shell sticks to the hand, it means shrimp.

has deteriorated. 3. Fresh shrimp are bright in color.

Depending on the species of shrimp, there is a slight difference in color. Fresh prawns, Roche prawns.

The grass shrimp is blue, the sea-caught shrimp is pink, and the bamboo shrimp and the base shrimp are small.

There is a black and white pattern with a slight pink. If the shrimp has black hair, it is not fresh shrimp, and the whole or hidden shrimp is relatively black and not bright, which also means that it has deteriorated.

4. Fresh shrimp shells are tightly connected.

The fresh shell is very tightly attached to the flesh, and when you peel the shell by hand, the flesh is sticky to your hands, and it takes a little effort to peel off the shell. The intestinal tissue of fresh shrimp and the shrimp flesh are also sticky tightly, and if there is a loosening phenomenon, it indicates that the shrimp is not fresh.

Frequent shelling may be caused by the breeding environment is not suitable for the growth of shrimp or the nutrients in the shrimp are not sufficient. The following measures are recommended:

1.Ensure that the water quality is suitable: Shrimp need a clean and stable water quality environment, and it is recommended to carry out water quality monitoring to control the pH, oxygen content, temperature, dissolved matter and other indicators in the water quality.

2.Provide sufficient nutrients for shrimp: During the breeding process, provide sufficient and balanced bait and additives to ensure that the nutritional needs of shrimp are met.

3.Improve the aeration of water: Increasing the aeration of water and increasing the oxygen content in the shrimp body can effectively reduce the phenomenon of shrimp shelling.

4.Regularly change the breeding environment: regularly change the water of the breeding pond to ensure that the shrimp breeding environment is clean and hygienic, and reduce the probability of shrimp getting sick and shelling.

5.Maintain the balance of shrimp colonies: In the process of shrimp farming, pay attention to the balance of shrimp number and taste, and avoid too many or too few shrimp colonies, resulting in shrimp attacking each other or insufficient nutrient intake.

It should be noted before sentencing that shrimp shelling is sometimes a normal physiological phenomenon and does not necessarily require excessive intervention. If the shrimp is abnormal and frequently sheds its shell, the breeding environment should be detected and adjusted in time, and suitable drugs or feed should be used to ensure the health and growth of the shrimp.

Shrimp is the most fragile when shedding the shell, try to avoid changing the water, and do not use medicine, such as the medicine can only be used with external medicine, and eating is generally a day later.

That's it, you can change the water after about a three-pure land cavity day.

Expansion: The shelling process of shrimp is regulated by hormones.

The first is the shelling inhibitory hormone, which can inhibit the accumulation of nutrients and calcium, so that the shelling activity is delayed.

The second is the hulling promotion hormone, which is a hormone that has an impact on the early stage of shelling, which can promote the progress of various physiological activities in the early stage of shelling, for example, the inorganic salts and organic substances in the old shell are reabsorbed, so that the old shell becomes soft and thin, especially some suture parts become soft and easy to crack, which is conducive to the smooth progress of the shelling activity. The substances in the old shell can be reabsorbed and utilized, so that the blood calcium in the body's blood.

Significantly higher, the content of substances such as organophosphorus also increased. These hormones mainly come from the central nervous system.

Regulation. The third is the husking water absorption regulation hormone, which can regulate the water absorption, so that the water absorption of the shrimp body before and after shelling is reasonably increased, so that the new shell can be expanded and strengthened quickly.

Because the shell of the shrimp is not like the ** of the animal.

Its shell does not grow as the body grows.

So it has to be a new shell after a while, and the new shell is larger.

Then the old shell is taken off, and the body can grow. The same is true of snakes.

Hello, the color of the shrimp body surface is mainly determined by the pigment cells in the dermis of its crustacea, usually there are a lot of pigment substances on the surface of the shrimp and crab shell, these pigments are basically blue-black, which contains a pigment called astaxanthin, astaxanthin is usually combined with protein, so it is not red. Cook it out whitish.

The significance of shrimp shelling is probably as follows: the growth of shrimp and crabs needs to be shelled, and the weight of each shelling increases by about 15%; Shelling is the process of repairing the body damage of shrimp and crabs, such as some broken feet and broken tails, which can grow back after shelling.

Shrimp shelling can also replace the flora in the body and adapt to the changing environment. In short, shrimp and crab shelling is a physiological reaction, and many factors will induce shrimp to shell. In general, the normal frequency of shelling of prawns is 2 times a month.

Because the shell of the shrimp is not like the ** of the animal.

Its shell does not grow as the body grows.

Therefore, it is necessary to have a new shell after a while, the new shell is larger, and then the old shell is taken off, and the body can grow. The same is true of snakes.

If you want to judge whether the shrimp is shelled, you can observe its shrimp body, the shrimp will appear a white dividing line on the shrimp body before shelling, and then it will absorb a lot of water, so that its old shell will burst, and the shrimp will come out of the old shell.

1. Observe the shrimp body

If you want to judge whether the shrimp is going to be shelled, you can observe the shrimp's vertical body, if you find that there is an obvious white line on its shrimp body, it means that the shrimp is going to be shelled, and the shrimp will eat less before the shelling, and will not be active, the shrimp will not eat after the shelling, and will not resume eating until its new shell is hard.

2. Suitable environment

During the shrimp shelling period, it is necessary to ensure that the environment is clean and can not be frightened, and to make the oxygen in the water sufficient, oxygen supply equipment can be installed in the water, and after the shrimp is shelled, it is necessary to determine whether the environment is safe, if it is not safe, the shelled shrimp should be moved to other shrimp ponds for breeding.

3. Provide feed

When breeding shrimp, it is necessary to provide it with sufficient bait, which can be fed once a day in the morning and evening, and the bait can choose small fish, loach, soybean cake residue and other foods with high protein content, so as to provide calcium and magnesium and other mineral elements for shrimp, so that it can grow healthily and avoid the difficulty of shrimp shelling.

4. Precautions

When farming shrimp, the ponds should be inspected regularly and the water quality should be tested if nitrite is found.

The content is too high, or the pH level.

Abnormality, it will lead to a decline in the shrimp physique, so that its shelling fails, and the shrimp pond should be cleaned every 15-20 days and disinfected to avoid shrimp infection with parasites.