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I don't know if you are feeding silkworms, the best growing temperature for silkworms is between 20-30 degrees. If the weather is too cold, the silkworm is rarely moved, the silkworm baby may also be shedding its skin, the silkworm from the silkworm ant to the silkworm to make a cocoon to peel 4 times (1-4 instar), the temperature is about 27 degrees, generally 10 days to peel three times (1-3 instar), and then about 4 days and then peel again (4 instar), you feed about 8 days silkworm baby silkworm silk to make cocoon. That's when you're done.
I am from a rural area in Jiaxing, Zhejiang. In our rural households, every household raises silkworms, according to the mulberry leaf cycle, we have to raise silkworms here 5 times a year (spring silkworms are planted on April 30, summer silkworms are planted on June 20, early autumn silkworms are planted on July 30, Mid-Autumn silkworms are planted on August 22, and late autumn silkworms are planted on September 26). Silkworm eggs are provided by professional breeding bases.
The silkworm baby does not move, it may be that the gas is too low, if the silkworm is not good, you can buy a little on the **, and sell it on the **, and the name of the shopkeeper on the ** is also called Shuanggong Cocoon.
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The reasons why the silkworm baby does not move are as follows:1. The reason why the living silkworm is motionless is that it is about to molt.
2. The amount of cannibalized mulberry is very large, so it grows very quickly and its body color gradually fades. 3. But its appetite gradually decreases and even fasts completely, it spits out a small amount of silk, fixes its stomach and feet on the silkworm seat, raises its head and thorax, and no longer moves, as if it is asleep, which is called "sleep".
4. The sleeping silkworm seems to be stationary on the outside, but the body is preparing to shed its skin, and after taking off the old skin, the growth of the silkworm will enter a new age stage, from the ant silkworm to the silkworm cocoon a total of 4 times.
5. Sleeping is one of the growth characteristics of silkworms, and sleeping is the genetic trait of silkworms, which is also affected by the environment.
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Mine too. However, my classmates told me that this was a precursor to peeling. In a few days, your baby silkworm will be shedding its skin. Don't worry, they're not dead! Don't worry, listen to your senior sister, yes!
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I'm in the first year of junior high school, and if the silkworm turns white, it should shed its skin, but if it doesn't move, maybe you haven't fed it, or it's dead.
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If the silkworm does not move, it is not necessarily dead. If the silkworm is translucent and a little soft, it may be a sign of imminent death. The yellow one that doesn't move is to molt, and the white one who doesn't move is sleeping. If the color is not right, it may be sick, so you can leave it in the sun for a while, being careful not to expose it to the sun for a long time.
Silkworm moth is a kind of insect, native to China, domesticated and raised indoors, so it is also called silkworm. Silkworm raising and the use of silk is a major event in human life, which has been recorded in China about 4,000 years ago, and at least 3,000 years ago, China has begun to raise silkworms artificially. In 551 AD, two foreign monks brought cocoons to Europe.
The body of the moth is medium-sized, the antennae of both female and male are ctenoid, and the male has slightly longer ctenodonate; The beak is vestigial, the lower lip is short, there is no single eye, the body wings are grayish-white, and the wing veins are grayish-brown. When the silkworm spins the silk cocoon, the head keeps swinging, and the silk is woven into neatly arranged zigzag silk circles. Every time you weave more than 20 silk loops (called a silk column), you will move the position of your body, and then continue to spit and weave the silk column below.
After one end is woven, the other end is woven, so the cocoon of the silkworm is always thick at both ends and thin in the middle. For each cocoon, silkworms need to change their position 250 500 times to weave more than 60,000 figure-8 silk loops, each of which is on average long, and the silk length of a cocoon can reach 1500 3000m. The secretions in the silk glands are completely exhausted, and the pupa turns into a moth.
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Silkworms that die suddenly can be caused by the following:
1.Viral infection: Silkworm virus is an important disease in the silk production process, and if it is not prevented and controlled in time, the infected person often dies suddenly in a short time.
2.Overfeeding: In the process of feeding, if the silkworm larvae are continuously fed too many mulberry leaves and food, it is easy to cause the digestive and absorption system of the silkworm to be overburdened and blocked, resulting in sudden death.
3.Lack of air or lack of oxygen: Silkworms need air circulation to maintain fresh air circulation in the process of feeding, if the ventilation conditions of the silkworm house are not good, or even if they are cracked by extreme weather such as cotton dragon wind, high temperature, humidity, etc., it may lead to the sudden death of the silkworm group.
4.Accidental ingestion of toxic substances: Silkworms are adulterated with substances other than fresh mulberry leaves, especially toxic chemicals, which will cause the silkworm's protruding branches to die.
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The silkworm didn't move, picked him up with a clamp, and he still spit silk, he still had mucus on him, what's going on, is he going to die?
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In general, it is of course alive to be able to climb, and in some special cases, it is not necessarily dead if you don't climb, such as staying for a long time before spinning.
There are blood vessels on the back and abdomen of silkworms, and careful observation can see the pulse (it is more difficult to take the pulse), if the pulse is still there, it is a live silkworm. If it's too small to see clearly, you can only judge by the feel and whether it's shriveled.
If you are not sure why the silkworms do not move, the attendants can separate the immobile silkworms until they return to normal, so as to answer the question of grinding to prevent the infection of zombie silkworms. Silkworms can only molt after about a day of sleep, and when they molt, they start from the head, and the silkworm will stretch and crawl out of the old silkworm skin, and after molting, the skin will become whiter, the head will become larger, and the skin will become looser, and there will be no tightness before sleep. The English name of silkworm is "silkworm" (meaning "silkworm") because it uses silk to weave cocoons.
The cocoon is woven from a single piece of silk 300-900 meters long. Nowadays, China's cocoon silk production and export volume account for more than 70% of the world's total, and has become a major cocoon silk country that can dominate the world's cocoon silk trend. Silkworm eggs:
Silkworms reproduce by eggs. The silkworm eggs look like fine sesame seeds, about 1 mm wide and about mm thick. A female moth can lay 400 500 silkworm eggs.
1700 2000 silkworm eggs weigh about 1 gram and are in diameter. The color of silkworm eggs is pale yellow or yellow when it is first laid, and it becomes pale red bean color and red bean color after 1 2 days, and then turns gray-green or purple after 3 or 4 days, and then it no longer changes, which is called fixed color. The outer layer of the silkworm egg is a hard egg shell, and the inside is the yolk and serous membrane, and the embryo in the fertilized egg continuously ingests nutrients during the development process, and gradually develops into an ant silkworm, which crawls out of the egg shell, and the egg shell becomes white or light yellow after the egg shell is empty.
1st age: 4 to 5 days; 2nd instar 3 to 4 days; 3rd instar 4 days; four years and six days; 5th age: 7 to 9 days; Pupal stage 14 to 18 days; Moth stage: 3 to 5 days.
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