CATDOLL : CATDOLL: What is silkworm breeding (when is silkworm breeding done)?

1. Information about silkworm breeding?

Preparation before raising silkworms:

On the basis of planting mulberry leaves, prepare the silkworm room and silkworm tools; 7 days before raising silkworms, spray and disinfect with 1% strong chlorine, half a pound of liquid per square meter, and seal it for more than 24 hours after spraying. At the same time, the environment around the silkworm room should be sprayed and disinfected.

Quickening:

Around the eighth day after the silkworm eggs were taken out of the warehouse, you can see a small black dot at one end of the egg, which is called "green dot". If 20% of the eggs on a sheet of silkworm eggs have green dots, use a black cloth to block out the light. Starting from the day of "green dots", the black cloth should be removed at 5 o'clock in the morning on the third day, and the lights should be turned on for photosensitive incubation.

Collecting ants:

After 3-4 hours of exposure, the spring silkworms can be harvested at 9 am, and the summer and autumn silkworms can be harvested at 7-8 am. Method of harvesting ants: Cut the first unfolded leaf of mulberry tree into 0.5 cm small squares, use about 5 times the amount of leaves as ants, and sprinkle them on a dustpan lined with plastic film. Hold the silkworm seed paper in one hand and the silkworm chopsticks in the other hand, and evenly pat the back of the silkworm seed paper to make the ants fall into the dustpan, then scrape the ants with goose feathers and arrange them into a round shape.

Rearing of silkworms:

1. Temperature and humidity adjustment: 1-3 years old are called young silkworms, and they require a high temperature and high humidity environment. The suitable temperature for 1-2 years old is 26-27 degrees and the relative humidity is 90%; therefore, 1-2 years old silkworms are fully dry-reared, that is, covered with plastic film and padded with plastic film; 3 years old silkworms are semi-dry-reared, that is, only covered without plastic film, and the temperature is kept at 26-27 degrees and the relative humidity is 85%.

2. Leaves for young silkworms: For 1-year-old silkworms, use the 3rd leaf from the top bud of the mulberry tree. The leaf color is yellow with green. For one silkworm of silkworm larvae, 1 kg of leaves are used; for 2-year-old silkworms, use the 4th leaf from the top bud. The leaf color is green with yellow. For one silkworm of silkworm larvae, 3 kg of leaves are used; for 3-year-old silkworms, use the 5th to 6th leaves from the top bud. The leaf color is light green and shiny. For one silkworm of silkworm larvae, 10 to 12 kg of leaves are used. For 1st and 2nd instar silkworms, cut the mulberry leaves into small cubes 1.5 times the length of the silkworm body. For 3rd instar silkworms, cut the mulberry leaves into triangles for feeding. The amount of mulberry leaves fed each time should be appropriate, leaving a small amount of residual mulberry leaves on the silkworm seat before the next feeding.

3. Frequency and time of feeding mulberry: Feed 4 times a day, at 7 a.m., 11 a.m., 4 p.m., and 10 p.m. respectively. Young silkworms grow and develop quickly, so each feeding should be combined with expanding the seat.

4. Treatment before sleeping: (1) Desanding before sleeping: When the body color of young silkworms turns white, their bodies shorten, their bodies become tense and shiny, and part of the bodies of first-instar silkworms are covered with silkworm feces, and second- and third-instar silkworms are carrying silkworms, you can add nets to the mulberry trees to remove sand before sleeping. (2) Raising silkworms: If some silkworms have already fallen asleep and some have not, you should add nets to the mulberry trees again to lure up the silkworms that have not fallen asleep and move them to another winnowing basket to continue feeding until they fall asleep.

5. Protection during dormancy: In the early stage of dormancy, the silkworm seats should be dry. Lime powder should be sprinkled on the seats to maintain a relative humidity of 80%. When the silkworms begin to hatch, the room should be humid and the relative humidity should be maintained at 85%. If the humidity is not enough, water can be sprinkled on the ground to supplement moisture.

6. Feeding after waking up: When more than 95% of the sleeping silkworms have shed their skins, their heads have turned from grayish white to brown and have become noticeably larger. The young silkworms are crawling around looking for food. At this time, they can be fed. The mulberry leaves used as food should be slightly tender, and the amount of mulberry leaves given should be relatively small.

Silkworm breeding:

1. Rearing method: 4-5-year-old silkworms are in the adult stage, and the suitable growth temperature is 25 degrees. Silkworms have weak resistance to high temperature, humidity and carbon dioxide, eat a lot of mulberry leaves and excrete a lot. They can be raised on the ground indoors or on outdoor sheds.

2. Move the silkworms to the ground: Clean the silkworm room, disinfect it with 1% bleaching powder, and after it is dry, sprinkle a layer of lime powder on the ground. After feeding the silkworms a meal of leaves, move them to the ground for feeding.

3. Reasonable mulberry feeding: The 4th instar silkworm is the transition period from the growth of the silkworm body to the growth of the silk gland. If the silkworm is malnourished, it will affect the yield and quality. The mulberry leaves should be fresh and of good quality. Select 7-15 leaves under the top bud for feeding to achieve the purpose of good mulberry. The amount of mulberry used by the 5th instar silkworm accounts for about 85% of the total amount of mulberry. This period is the key period for reasonable use of mulberry and improving the efficiency of mulberry leaves. The feeding method of tight at both ends and loose in the middle is adopted: on the 1st to 2nd day or the 5th to 7th day of the 5th instar, the amount of leaves should be strictly controlled until the silkworms have just finished eating the mulberry leaves next time. On the 3rd to 6th day, the silkworms should be fully fed with good mulberry. Each time the silkworms are fed with leaves, the silkworms are moved and the seats are expanded to keep the silkworm heads even.

4. Keep the silkworm seats clean: During the early stage of silkworm growth, use fresh lime powder to disinfect the silkworm bodies and seats every morning. On rainy days, when the humidity is high, sprinkle lime powder twice a day to keep the silkworms ventilated and dry.

5. Collecting cocoons: After 6-7 days, the fifth-instar silkworms stop eating mulberry leaves and excrete a lot of soft green feces. Their chests are transparent, their bodies are slightly soft and waxy yellow, and their heads swing left and right. At this time, select 3-4 square clusters and overlap them horizontally. Sprinkle the mature silkworms evenly on the clusters, and hang the clusters up after the silkworms have settled. Good ventilation should be maintained during the clustering period, and the temperature in the cluster should be maintained at 24 degrees and the humidity at 85%. Generally, the cocoons can be collected and sold 6 days after the spring silkworms are clustered, and 4-5 days after the summer and autumn silkworms are clustered.

2. What does it mean to pick mulberry leaves and raise silkworms?

Mulberry picking and silkworm rearing means collecting mulberry leaves and raising silkworms to make cocoons and silk.

The season for silkworm harvesting is spring, when the silkworms slowly hatch and the mulberry trees slowly grow buds and leaves, making it the perfect time to harvest mulberry trees to feed the silkworms.

The domesticated silkworm (Bombyx mori L.) is a Lepidoptera silkworm that feeds on mulberry leaves. It belongs to the invertebrate class, Arthropoda, Bombycidae, Bombyx mori. The main purpose of mulberry cultivation and silkworm breeding is to produce cocoons and silk. The silkworm goes through four completely different developmental stages in its life: egg, larva, pupa, and adult. Different parts of each developmental stage and their metabolites have a wide range of medicinal values.

3. What is the use of raising silkworms?

Silkworms are a common animal in our daily life. So what exactly are their functions?

1. Silk becomes one of the raw materials for making silk.

2. Silk can be made into silk quilts with antibacterial and anti-allergic effects.

3. Silkworm feces can be made into silkworm feces pillows which can regulate sleep, calm the nerves and lower blood pressure.

4. Silkworm feces can be used as a traditional Chinese medicine to eliminate rheumatism.

5. The skin of silkworm molt can also be added to traditional Chinese medicine.

6. Silkworm pupae can be served on the table as a delicacy with a relatively high protein content.

The above are the benefits that silkworms can play in our daily lives. It can be seen that silkworms are animals that are beneficial to humans.

4. What is the origin of sericulture?

"Lu Shi·Hou Ji Wu" records: "Huangdi's wife Xiling was called Leizu, because she was the first to raise silkworms, so she was worshipped as the first silkworm. The so-called first silkworm is the god who first taught people to raise mulberry trees, raise silkworms and weave silk, also known as the God of the First Silkworm. Later, the ritual of worshipping silkworms was called the First Silkworm". According to the historical book "Sui Shu·Li Yi Zhi", during the Northern Zhou Dynasty, Luozu was called the God of the First Silkworm. "Tong Jian Wai Ji" records: "Xiling's daughter Luozu was the emperor's wife, and she was the first to teach people to raise silkworms and process silkworms to make clothes." "Lu Shi" said: "Fuxi turned silkworms into silkworms, and Xiling began to raise silkworms. Therefore, "Huainan Can Jing" says that "Xiling encouraged silkworm farming and personally raised silkworms." This statement was also widely promoted after the Song Dynasty and the Yuan Dynasty. Until the 1950s, when related Chinese and foreign documents involved the question of when sericulture originated in my country, they all described the origin of sericulture in China in a favorable manner.

In 1926, a Chinese expedition team unearthed half a silk cocoon at the Neolithic site of Xiyin Village, Xia County, Shanxi Province, which means that silkworms appeared in the Neolithic Age. This discovery brought us a huge amount of information and aroused great interest among researchers at home and abroad. After research by relevant personnel, they compared the half silk cocoon unearthed this time with the "Snail Ancestor Silkworm", and finally inferred that there was silkworm breeding in the Yellow River Basin during the Yangshao Culture period, confirming the birthplace of silkworm breeding in China. This also allows many of us to understand the history of silkworm breeding in our country, and also helps us accumulate knowledge in this area in the future.

5. Why raise silkworms?

Sericulture is for people's need of clothing. Sericulture has a long history in China, mostly in the area south of the Yellow River. Silkworms are released in spring and cocoons are harvested in autumn. Silkworms can spin silk to make cocoons, and the silk extracted from the cocoons can be spun and woven into cloth to make gorgeous silk clothing! In the past, my country had the Silk Road, which was used to export Chinese silk fabrics, tea, and porcelain to all parts of the world for trade, and made huge profits. One of the most important commodities was silk fabrics!

6. What does sericulture mean?

Sericulture is the process of raising silkworms that eat mulberry leaves and can spin silk to be made into silk quilts, silk, clothes, etc.

7. What is the purpose of raising silkworms?

Sericulture is for the purpose of producing silk, which is then spun into yarn and made into silk.

8. What is the history of sericulture in China?

Sericulture has a history of more than 4,000 years in my country. According to historical records, silkworms existed in my country before the Xia Dynasty.

They originally grew on naturally growing mulberry trees and mainly ate mulberry leaves, so they are also called mulberry silkworms.

Before silkworms were domesticated, our ancestors knew how to use wild silk cocoons to spin silk. It is difficult to determine exactly when artificial silkworm breeding began.

However, as early as the Yin and Zhou dynasties, my country's sericulture had already developed greatly, which shows that the development of artificial silkworm breeding was long before the Yin and Zhou dynasties. By the Zhou Dynasty, mulberry planting and silkworm breeding had flourished in large areas of northern and southern my country. Silk had become the main material for clothing for the ruling class at that time.