CATDOLL : CATDOLL: What are the points to note and methods for raising silkworms? (What are the points to note and methods for raising silkworms?)

1. How to raise silkworms at home?

After receiving the silkworm seeds, place them in the prepared silkworm rearing box. The silkworm box can generally be an ordinary paper box, but it must be kept clean and odorless. From the day the silkworm seeds are shipped out of the warehouse, they will naturally hatch into silkworms in about 11 days (including the delivery 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 in the silkworm box. The silkworms will automatically climb onto the mulberry leaves to eat. It usually takes about 27 days (divided into 5 ages) for silkworms to hatch and cocoon on the mountain. It is advisable to use tenderer mulberry leaves for feeding silkworms from the first to third ages, and ordinary mulberry leaves 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 the most suitable growth temperature is about 27 degrees Celsius. A silkworm eats about 25 grams of mulberry leaves in its lifetime. For example, if you want to feed 40 silkworms, you only need 1 kg of mulberry leaves. However, in the actual feeding process, some mulberry leaves will be wasted, so more mulberry leaves will be needed. After the fifth instar, silkworms will 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-bound grass hills or pine branches are generally used as silkworm hills. For silkworms fed as pets, a paper box divided into many small compartments can be used instead. Precautions for raising silkworms 1. Keep mulberry leaves fresh 1. Place mulberry leaves in the refrigerator (about 5 degrees Celsius) to prevent deterioration. 2. Tighten the plastic bag to slow down the drying and dehydration time of mulberry leaves. 2. Feeding silkworms 1. Take out the mulberry leaves from the refrigerator and wait for a few minutes for the mulberry leaves to return to room temperature before feeding. 2. Do not wash the mulberry leaves with water and keep them in a natural state. 3. For feeding the second-instar silkworms, please choose tenderer mulberry leaves, 1-2 pieces per day. 4. The 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 room should be placed in a cool place (around 25 degrees Celsius).

2. What should we pay attention to when raising silkworms?

Details to pay attention to when raising silkworms

1. Remove sand before dormancy. This is to avoid excessive accumulation of silkworm feces, which can easily breed and spread pathogens and invade the silkworms during their dormancy.

2. Silkworms do not eat or move during the dormant period. They mainly rely on the nutrients absorbed by eating mulberry before dormancy to maintain their life activities. Therefore, they must sleep when they are full. If you stop feeding mulberry too early, they will starve to sleep. Starved silkworms are weak in constitution, poor in resistance, and prone to illness.

3. Silkworms are less resistant to external interference during their dormancy, so you must pay attention to their protection during dormancy. When 95% of the silkworms have fallen asleep, sprinkle them with fresh lime powder and silkworm medicine "Disease Prevention No. 1" to prevent pathogens from invading. If a small number of silkworms do not eat mulberry and do not sleep, it is because they have not found a place to sleep. At this time, add some mulberry leaves to help them sleep in batches.

4. Silkworms are temperature-changing animals, and their adaptability range is 20-30℃. In the spring silkworm period, the climate is often low and humid, so the focus is on replenishing warmth and removing moisture. In the summer silkworm period, the climate is hot and humid, so the focus is on cooling and removing moisture, keeping the air in the silkworm room flowing, and removing the stuffiness. In the autumn silkworm period, if the weather is hot and dry, it is necessary to replenish moisture indoors and combine disinfection, that is, spray the ground and walls with fresh lime powder and bleaching powder; you can also hang a wet cloth on the silkworm rack to keep the silkworm room moist to prevent the silkworms from having difficulty molting or half molting.

3. What are the silkworm breeding techniques and precautions?

1. First of all, the best time to raise silkworms is from April to May every year. In this season, you can buy silkworm eggs, which are silkworm eggs, outside. You can directly place the silkworm eggs on mulberry leaves.

2. Under normal room temperature in April and May, that is, between 20 and 25 degrees Celsius, silkworm ants will hatch into silkworm babies within two days.

3. When it hatches into a silkworm, it starts to eat by itself. The food that the silkworm eats is clean and fresh mulberry leaves, which means that the mulberry leaves collected must be washed and then fed to it.

4. However, it should be noted that silkworms cannot eat raw water, so the mulberry leaves should be washed and dried before feeding them.

5. The silkworms continue to grow while eating mulberry leaves. After the fourth molting, they begin to spin silk and make cocoons. Then they will break out of the cocoon!

4. What are the correct methods and techniques for raising silkworms?

1. Mulberry leaves should be picked, transported and stored properly. Try to pick leaves in the morning or evening, transport them as soon as they are picked, and pack them loosely for fast transportation. After the picked mulberry leaves are loosened, put them in the mulberry storage pool or mulberry storage room, and store them properly to prevent them from being blown away by the wind or piled up and heated and deteriorated, which will cause waste of mulberry leaves.

2. Prevent mulberry leaves from wilting. During the young silkworm stage, use a kang bed (room) and cover the mulberry leaves with plastic film to keep the temperature and moisture, so that the mulberry leaves remain fresh. During the adult silkworm stage, close the doors and windows appropriately after feeding the silkworms, and open the doors and windows for ventilation after the silkworms have eaten about 70% of the mulberry leaves, which can effectively prevent the mulberry leaves from wilting.

3. Ensure the temperature of the silkworm room. The suitable temperature for large and small silkworms is 24℃ and 25℃ respectively. Within the suitable temperature range, the silkworms have a strong appetite, which reduces the defective mulberry leaves and improves the leaf-silk conversion rate.

4. Promote less-return rearing and mulberry-strip rearing. Labor-saving silkworm rearing technologies such as flat three-dimensional rearing of small silkworms once a day, rearing of full-age silkworms twice, and rearing of large silkworms in mulberry strips not only improve the efficiency of silkworm rearing, but also help silkworms eat mulberry leaves, saving about 5% of mulberry leaves compared with ordinary rearing.

Additional information:

Summer and autumn silkworm breeding should pay attention to

1. Prevent pesticide poisoning. During the silkworm-raising season, do not spray organic pesticides such as dimethoate in the silkworm room and the fields near the mulberry fields, as the smell will cause poisoning to the silkworms; mulberry leaves should be fed to the silkworms only after they have been tested and confirmed to be non-toxic.

2. Mosquito-repellent incense or mosquito repellent or insecticide is prohibited in the silkworm room. If it is used in the house near the silkworm room, the doors and windows of the silkworm room should be closed to prevent the silkworms from being poisoned.

3. Screen doors and windows should be installed in the silkworm room to prevent flies from entering the room and harming the silkworms, and "silkworm fly killing" emulsion should be added or sprayed on the silkworm bodies to kill the maggots.

5. What should we pay attention to when raising silkworms?

Summer and autumn silkworm breeding should pay attention to

1. Prevent pesticide poisoning. During the silkworm-raising season, do not spray organic pesticides such as dimethoate in the silkworm room and the fields near the mulberry fields, as the smell will cause poisoning to the silkworms; mulberry leaves should be fed to the silkworms only after they have been tested and confirmed to be non-toxic.

2. Mosquito-repellent incense or mosquito repellent or insecticide is prohibited in the silkworm room. If it is used in the house near the silkworm room, the doors and windows of the silkworm room should be closed to prevent the silkworms from being poisoned.

3. Screen doors and windows should be installed in the silkworm room to prevent flies from entering the room and harming the silkworms, and "silkworm fly killing" emulsion should be added or sprayed on the silkworm bodies to kill the maggots.

4. Before raising silkworms, rat holes should be blocked, silkworm racks should be kept at a certain distance from the wall, and lime powder or silkworm medicine should be sprinkled around the legs of the silkworm racks to prevent rats from climbing up. When raising silkworms, drugs should be used to kill rats.

5. In summer and autumn, the temperature is high when raising silkworms. Open doors and windows to increase indoor ventilation. Spraying mulberry leaves with clean water and using electric fans to blow breeze indoors can also help cool down the room.

6. If sick silkworms are found, they should be cleaned up in time and placed in a disinfection basin filled with bleach solution or lime slurry. It is forbidden to feed sick silkworms to livestock and poultry to prevent the spread of pathogens and pollute the environment.

7. Silkworm feces contain a large amount of pathogens. Do not spread them out to dry around the silkworm room. Instead, compost them in a pile outdoors or in a manure pit to prevent the spread of pathogens.

8. In summer and autumn, the temperature is high and pathogens multiply quickly. Pay attention to picking leaves on demand, transporting leaves in time, and storing leaves properly. The mulberry pool should be disinfected once for each age, and do not feed mulberry leaves overnight.

9. Avoid feeding wet leaves in hot and humid weather. Do not water the stored mulberry leaves. Remove sand frequently and sprinkle more fresh lime powder, dry straw and other materials to inhibit the growth and reproduction of pathogens.

10. When it is not the silkworm-raising season, do not store grains, bran and other items in the silkworm room to avoid moisture and the generation of mites, which will harm the silkworms during breeding.

Additional information:

Five common misunderstandings about the use of drugs in silkworm rearing In recent years, many silkworm farmers have used excessive and unconventional drugs in the prevention and treatment of silkworm diseases, which has resulted in drug poisoning of silkworms and aggravation of the disease, causing unnecessary losses in silkworm production. The author introduces the five common misunderstandings about the use of drugs in the silkworm rearing period as follows for reference by silkworm farmers.

1. The misunderstanding of using drug carriers is to spray silkworm medicine on mulberry leaves to add food to silkworms. Mulberry seedling planting technology and mulberry tree disease and insect pest control should be sprayed (sprinkled) on silkworm bodies, silkworm seats, and silkworm webs, which should be determined according to the disease type and drug type. But the actual situation is that drug carriers are often confused. For example, "Fangjiangling No. 2" is often sprayed on mulberry leaves by some silkworm farmers as a food drug, which often leads to poisoning and death of silkworms. And "Chloramphenicol for Silkworms" and "Kanjun Bacteria" that should be used to add food are often used on silkworm bodies, which is not only ineffective but also misses the best time to prevent and control silkworm diseases.

2. Misunderstandings in drug selection Some silkworm medicines are quite similar in appearance and color, and are often used incorrectly. "Big Silkworm Disease Prevention No. 1" and "Small Silkworm Disease Prevention No. 1" are only one letter different, both are bagged powders, but the concentration of the active ingredient - formaldehyde is significantly different, the former is 2.5%, and the latter is 1.25%. If they are used in reverse, it will cause drug damage to small silkworms and poor effect on large silkworms. According to the Agricultural and Forestry Network, "Fangjiangling No. 2" and "Mi Canfei" are often mixed because of their similar colors. More silkworm farmers do not know the efficacy of silkworm medicines and cannot choose the right medicine when selecting. What's worse, because they think the medicine is not strong enough, they mix and use multiple silkworm medicines, which actually promotes chemical reactions between the medicines, making the silkworm medicine lose its original efficacy and even causing drug damage. For example, "Fangbing No. 1", "Mi Canfei", "Fangjiangling No. 2" and other alkaline drugs such as lime powder should not be mixed at the same time.

3. Misunderstandings about the timing of medication. For example, when using lime powder during the dormancy period, there is no time distinction. Some people use it until the late dormancy period, causing the silkworms to molt half or not at all. "Anti-rigidity powder" works best when used before feeding at the beginning of the instar, but some silkworm farmers use it at the end of the instar when the silkworms are about to dormancy.

Fourth, the misunderstanding of the dosage of medicine is often manifested in insufficient dosage, excessive dosage, insufficient or too frequent dosage. For example, the dosage of "Ultra-Clean" fumigant used in the young silkworm stage is confused with the dosage used for disinfection before silkworms are killed, and 5 grams are used per cubic meter of space instead of 1 gram. In addition, when preventing and treating silkworm fly maggot disease, some people use "silkworm fly killing" once in the fifth instar of silkworms and think that it is enough, resulting in countless maggot holes and silkworms when collecting cocoons.

5. Mistakes in drug preparation: Drug preparation is based on guesswork and the concentration of the original drug is not taken into account, resulting in a high or low concentration. For example, when preparing bleaching powder to prevent stiffness, the effective chlorine concentration should be 2% for young silkworms and 3% for adult silkworms. However, in the prevention and control of silkworm diseases, the phenomenon of excessive effective chlorine concentration causing poisoning and death of adult silkworms occurs in almost every region and every season.

6. What are the methods and precautions for raising silkworms at home?

Place healthy silkworms in a clean, odor-free box with ventilation holes and spread dried mulberry leaves on the bottom. Keep the room temperature at around 22-29°C and add appropriate amounts of dry mulberry leaves regularly.