CATDOLL : CATDOLL: How to solve the seasonal problem of silkworm breeding (How to solve the seasonal problem of silkworm breeding)

1. Can we still raise silkworms in summer, autumn or winter?

Yes. Silkworms can be raised all year round in the south, but not in the north. They can only be raised in the summer in the north because it is too cold in the north and mulberry trees cannot grow. Things to pay attention to when raising silkworms in summer and autumn: 1. Prevent pesticide poisoning. Do not spray organic pesticides such as insecticides in the silkworm room and farmland near the mulberry field during the silkworm raising season. The smell will cause poisoning to the silkworms; mulberry leaves must be tested and confirmed to be non-toxic before feeding silkworms. 2. Mosquito-repellent incense or mosquito repellents and insecticides are prohibited in the silkworm room. When used in a house near the silkworm room, the doors and windows of the silkworm room should also be closed to prevent poisoning of the silkworms. 3. Screen doors and windows should be installed in the silkworm room to prevent flies from entering the silkworm room and harming the silkworms, and "silkworm fly killing" emulsion should be added or sprayed on the silkworm body to kill fly maggots. 4. Before raising silkworms, rat holes should be blocked, and the silkworm racks should be kept at a certain distance from the walls. Lime powder or silkworm medicine should be sprinkled around the feet of the silkworm racks to prevent rats from climbing up. When raising ground silkworms, drugs should be used to kill rats. 5. In summer and autumn, the temperature for silkworm rearing is high. Doors and windows should be opened to strengthen indoor ventilation. Spraying mulberry leaves with clean water and using electric fans to blow breeze indoors are also conducive to cooling the room. 6. If sick silkworms are found, they should be cleaned up in time and put into a disinfection basin containing 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 number of pathogens. Do not spread them around the silkworm room for drying. They should be concentrated in the wild for retting or put in a manure pit for retting to prevent the spread of pathogens. 8. In summer and autumn, the temperature is high and the pathogens reproduce quickly. Pay attention to picking leaves on demand, transporting leaves in time, and storing leaves reasonably. The mulberry storage pool should be disinfected once for each age, and do not feed mulberry leaves overnight. 9. Do not feed wet leaves in hot and humid weather. Do not sprinkle water when storing 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.

2. What should I do if the silkworms keep dying in summer?

Reasonably arrange silkworm rearing batches and reserve enough time for disinfection. Strictly disinfect and kill pathogens. Killing pathogens is the basic measure to prevent silkworm pus disease. Strictly separate silkworms into batches, eliminate sick and weak ones, and prevent mixed breeding and infection. Strengthen feeding management to enhance physical fitness. Add edible antibiotics. Pay attention to the protection of silkworms to prevent secondary contamination of silkworms and prevent mosquito bites.

3. How to raise silkworms throughout the year?

The breeding container must be clean and odor-free, and the room temperature must be kept between 22-25℃. Feed mainly fresh young leaves, and it is best to pick them and feed them on the same day. Put the remaining leaves in the refrigerator every day.

4. How to raise silkworms in October?

1. Select silkworm eggs and hatch them

(1) First, you need to select black silkworm eggs with round particles, then wrap them in paper towels and place them in a warm environment such as an electric blanket for incubation. It usually takes about 1 day for the silkworm eggs to hatch.

(2) Then place the young silkworms in a paper box that has been prepared in advance. Note: the bottom of the paper box should be covered with tender mulberry leaves.

2. Feeding

Generally, fresh mulberry leaves need to be provided to silkworms every day, and the remaining mulberry leaves from the previous day need to be cleaned up. Note: there must be no water on the mulberry leaves, so the water stains on the mulberry leaves need to be wiped dry before feeding.

3. Daily management

(1) Clean up feces in time to provide silkworms with a clean living environment and suitable temperature.

(2) During the breeding process, it is necessary to prevent and control natural enemies such as ants to ensure the safety of the breeding environment.

4. Cocoon management

Silkworms usually enter the cocoon-making stage one month after hatching, so you can put leafless and sterilized branches in a paper box to create a cocoon-making site for the silkworms.

5. How to raise silkworms in autumn?

1. Carefully disinfect to prevent silkworm diseases. Before raising silkworms, clean the area around the silkworm room and remove garbage and weeds. Wash the silkworm room with clean water, wash the silkworm tools in the river pond, and then expose them to the sun. Scrape off a layer of soil in the silkworm room and fill it with new soil. Whitewash the silkworm room with lime slurry, and disinfect the silkworm tools with lime liquid. After collecting cocoons, disinfect the surrounding area to prevent the spread of disease sources and prevent the spread of bacteria. In addition, sick silkworms and underdeveloped silkworms must be strictly eliminated during the silkworm raising process.

2. Select good varieties in batches and reasonably. The autumn silkworm breeding in our province is divided into three stages: early autumn, mid-autumn, and late autumn. The general requirement is: raise more early autumn silkworms, raise mid-autumn silkworms well, and raise late autumn silkworms according to the leaves. In some places, autumn silkworms are raised five or six times, with too many batches, the silkworm room uses the same silkworm tools, and large and small silkworms are mixed, which will cause poor disinfection and the spread of bacteria, resulting in an outbreak of silkworm diseases and a small number of cocoons. Therefore, the batches of autumn silkworms should be reasonable, and the previous and next batches should be separated by about half a month.

To raise autumn silkworms well, you should pay attention to choosing summer and autumn varieties that are easy to raise and high-yielding. These varieties generally have strong vitality. In addition, you can also save spring silkworm seeds for autumn. Spring silkworm varieties such as Dongfei Jiaohuahe and Hecheng Jiao 754 are all excellent varieties.

6. How to raise summer and autumn silkworms in batches reasonably?

In summer and autumn, the temperature is high, there is a lot of rain, the weather is changeable, and the pathogens accumulated from the previous batches of silkworms make it easy for silkworms to get sick. However, as long as the disease prevention measures are effective and implemented, silkworm diseases can still be controlled.

How to batch feed:

Eliminate sick and weak silkworms. If you are raising young silkworms together, you can raise them in batches every 10 days. If you raise them yourself, you should raise them in batches every 20 days. Once you find thin and small silkworms, late-sleeping silkworms with wrinkled and dull skin, and silkworms that do not sleep, you should eliminate them in time. If you see sick and dead silkworms, pick them out immediately and put them in a lime jar. When the silkworms are 1-4 years old, use fresh lime powder or disease prevention No. 1 to disinfect the silkworm bodies and silkworm seats every day. The silkworm seats should be properly sparse to avoid increasing the temperature of the silkworm seats.

Issues to note when raising summer and autumn silkworms:

(1) Select and raise superior silkworm varieties. Choose strong silkworm varieties that have strong vitality and can withstand high temperatures and humidity.

(2) Raise silkworms in reasonable batches. In addition to summer silkworms, autumn silkworms can generally be reared 2 or 3 times, but there should be at least a half-month interval between each period to facilitate disinfection and disease prevention.

(3) Strictly disinfect and prevent diseases. We should ensure that “disinfection is strict before silkworm rearing, disinfection is frequent during the silkworm rearing period, and disinfection is strict after the silkworm rearing period ends”.

(4) Establish a mulberry garden dedicated to young silkworms. Strengthen the fertilization and management of the mulberry garden, apply fertilizer in time after summer felling, pay attention to the combination of harvesting and raising silkworms in autumn, and apply fertilizer once for each silkworm raising to meet the needs of mulberry tree growth and development, and strive to improve leaf quality.

(5) Strengthen feeding management. Select mulberry for young silkworms and feed them when they are ripe but not too tender. Feed them sparsely and let them eat wet leaves skillfully. Expand the silkworms frequently and in advance. During the adult silkworm period, we should focus on the "three sparseness", that is, sparse silkworm nests in the silkworm room, sparse silkworm plaques on the silkworm nests, and sparse silkworm heads in the plaques. We should also pay attention to providing mulberry for them and feeding them sparsely to ensure that the silkworms are fully fed.

Do a good job of sleeping and waking up, strictly promote young silkworms in batches, and insist on eliminating weak silkworms.

7. What issues should we pay attention to when raising silkworms in summer and autumn?

1. Do a good job in disinfection and disease prevention

Because the interval between silkworm breeding in summer is short, pathogens are fresh and large in quantity, and are easy to infect, we should pay attention to environmental sanitation and thoroughly disinfect the silkworm room and silkworm tools. You can first spray disinfectant, then clean and wash them. When spraying, pay attention to the dosage and spray all the surfaces. Strictly implement the "three disinfection principles" (that is, thoroughly disinfect before silkworm breeding, continue disinfection during silkworm breeding, and disinfect immediately after silkworm breeding), and carry out disinfection and disease prevention throughout the entire silkworm breeding process.

When harvesting leaves for summer silkworms, attention should be paid to the safe interval of pesticide application. Mulberry leaves from areas where pesticides are applied must be harvested and fed after the residual period has expired. Only after they are proven to be non-toxic can leaves be harvested for feeding. Summer silkworms should be protected from flies and rats to avoid losses.

2. Adjust the room temperature for silkworm rearing

According to the characteristics of summer climate, take corresponding measures to adjust and improve the silkworm breeding environment. In hot and humid weather, pay attention to ventilation, and cool down and moisturize when it is hot and dry. Plastic film can be used to cover the young silkworms, which can keep warm and moisturize, which is conducive to the healthy development of silkworms. In the adult silkworm period, choose a tall, spacious and well-ventilated house to prevent stuffiness. Plant trees and build a pergola around the silkworm house to reduce radiation.

3. Do a good job in mulberry leaf management

The quality of mulberry leaves is directly related to whether the summer silkworm harvest is good or not. We should strengthen the fertilization and pest control of mulberry trees to promote the growth of mulberry trees. During the silkworm stage (1 to 3 years old), it is key to pick the leaves that are ripe, with the color being pure green and soft to the touch as the standard. When collecting mulberry leaves for ants, you should choose mulberry leaves that are ripe and tender, and avoid using leaves that are not exposed to enough sunlight, old leaves, wilted leaves, diseased and insect-infested leaves, and mulberry leaves contaminated by pesticides. The leaves for summer silkworms should be picked in the morning before the dew dries or in the evening. Leaves must not be picked in the middle of the day (except on rainy days). The picked mulberry leaves should be picked and transported quickly to prevent the mulberry leaves from emitting moisture and withering. Pay special attention to not stacking mulberry leaves too high or too thick to prevent them from rotting.

4. Do a good job in feeding management

First, the transportation of silkworm eggs. When transporting silkworm eggs, do not pile them up or pile them up, and try to avoid contact with high temperatures. The transportation of silkworm eggs should be carried out in the morning and evening, and they should be spread out in time after being brought back to prevent accumulation and heating. When distributing silkworm eggs, try to do it in the morning and evening. Silkworm eggs should not come into contact with pesticides and all harmful gases to prevent silkworm poisoning.

Second, feed the young silkworms. Plastic film can be used to cover the silkworms. Silkworms grow and develop quickly, so the area of ​​silkworm seats should be expanded in advance to prevent them from being crowded and hungry. Disinfect the silkworm bodies and silkworm seats with fresh lime powder or 2% effective chlorine anti-stiffness powder every day. Add 500 times diluted silkworm disease sterilization spirit, Yijiling, and Kejunxing to feed the young silkworms when they wake up. Use 0.3% effective chlorine to soak or spray the leaves for disinfection, dehydrate, and dry them before feeding them.

Three-catch adult silkworm rearing. During the period, three sparse should be achieved: the silkworm racks in the silkworm room are sparsely connected, the silkworm foils on the silkworm racks are sparsely placed, and the silkworm heads in the silkworm foils are sparsely placed. This is conducive to ventilation, lowering the temperature, and ensuring that the silkworms are fully fed. During the adult silkworm period, especially during the hot and humid period, the silkworm litter should be removed frequently to keep the silkworm seats clean and dry. During the adult silkworm period, labor-saving silkworm rearing should be implemented. During the adult silkworm period, 300 times the liquid of fly-killing tablets should be sprayed on the silkworm bodies and 500 times the liquid should be added to the food to prevent maggots from harming them.

Fourth, cluster management. In order to reduce labor costs, it is advisable to adopt automated clustering technology. The specific method is: when the silkworms develop evenly and 5-10% of the silkworms are mature, use 4-6 pieces of Chuanto per silkworm seed and mix 20-30 catties of mulberry leaves with cold boiled water (4-6 pieces with 1-1.5 catties of water), feed the silkworms at 10-12 o'clock in the evening, and no longer feed mulberry leaves. At 10-12 o'clock in the morning the next day, sprinkle some straw or silkworm nets on the silkworm seat, and place plastic clusters or square clusters on the silkworm seat to let the mature silkworms automatically cluster and cocoon. After clustering, strengthen the ventilation and dehumidification of the cluster room (use electric fans to dehumidify if conditions permit), so that the cluster room, cluster tools, and environment are dry, improve the yield and quality of silk cocoons, and ensure stable and high yields of summer silkworms.