CATDOLL : CATDOLL: How do you raise silkworms?

How to raise silkworms?

Brief technical regulations for silkworm rearing

1. 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.

Second urging:

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.

Three Harvest 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 four small 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.

Five major 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: Use fresh lime powder to disinfect the silkworm bodies and seats every morning during the growing period. On rainy days when the humidity is high, sprinkle lime powder twice a day to keep the room ventilated and dry.

5. Collecting cocoons on the cluster: After 6-7 days, the fifth-instar silkworms stop eating mulberry and excrete a lot of green soft 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 place them horizontally in alternating overlaps. Sprinkle the mature silkworms evenly on the clusters, and hang the clusters on hooks after the silkworms crawl. During the clustering period, good ventilation should be maintained, 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 on the clusters, and 4-5 days after the summer and autumn silkworms are on the clusters.

Does anyone know silkworm rearing techniques?

After receiving the silkworm eggs, place them in the prepared silkworm rearing box. The silkworm box can usually be made of ordinary paper boxes, but it must be clean and odorless. From the date of shipment, the silkworm eggs will naturally hatch into silkworms in about 11 days (including shipping time) at room temperature of 21-29 degrees Celsius.

Silkworms will have an appetite about 40 minutes after hatching, and the feeding process should begin at this time. Take the prepared fresh tender mulberry leaves out of the refrigerator, wait for the mulberry leaves to return to room temperature, cut them into small pieces with a knife and put them into the silkworm box. The silkworms will automatically climb onto the mulberry leaves to eat. It usually takes about 27 days for silkworms to hatch and cocoon on the mountain (divided into 5 ages). It is better to use tender mulberry leaves to feed silkworms from the first to third ages, and ordinary mulberry leaves can be used for silkworms from the fourth and fifth ages.

Silkworms are suitable for growing in an environment with a temperature range of 22-29 degrees Celsius, and their most suitable growth temperature is around 27 degrees Celsius. A silkworm eats about 25 grams of mulberry leaves in its lifetime. If you feed 40 silkworms, you only need 1 kilogram of mulberry leaves. But in the actual feeding process, some mulberry leaves will be wasted, so more mulberry leaves will be needed.

After the fifth instar, silkworms stop eating mulberry leaves and start looking for a suitable place to spin silk and make cocoons (also called going up the mountain to make cocoons). In rural areas, straw hills or pine branches are generally used as silkworm hills. For silkworms raised as pets, a paper box divided into many small compartments can be used instead.

Precautions for raising silkworms

1. Mulberry leaf preservation

1. Place the mulberry leaves in the refrigerator (around 5 degrees Celsius) to prevent them from spoiling.

2. Tie the mouth of the plastic bag tightly to slow down the drying and dehydration of the mulberry leaves.

2. Feeding of Silkworms

1. After taking out the mulberry leaves from the refrigerator, you need to wait for a few minutes to allow the mulberry leaves to return to room temperature before feeding them.

2. Do not wash the mulberry leaves with water, keep them in their natural state.

3. When feeding second-instar silkworms, please use tenderer mulberry leaves, 1-2 leaves per day.

4. Feeding time can be chosen in the morning or at noon.

3. Other matters needing attention

1. Do not catch silkworms with your hands, use the soft bristles of a brush to drive them away;

2. Clean the silkworm room every day;

3. The silkworm house should be placed in a cool place (around 25 degrees Celsius).