1. Seeking the secrets of raising silkworms..1. Collecting ants: After receiving the eggs of silkworms, students should continue to protect them at a temperature of about 25°C (you can put them in the pocket of underwear close to the body). After 2-3 days, the silkworms will drill out of the egg shell like ants. With very light gestures, collect and lead them to the tender leaves. This is called collecting ants. After collecting ants, put the silkworms and mulberry leaves in a suitable box (paper box, microwave box, etc. but not too big) and let them feed on the tender leaves. Don't let it be too cold. 2. Feeding mulberry leaves: Since the young silkworms eat very little, as long as the mulberry leaves are not shriveled, they can be fed once every 1-2 days. When feeding mulberry leaves in the adult silkworm stage, it depends on how many residual leaves are left. Feed them after they have eaten, but don't waste them. In addition, do not feed the silkworms when they are asleep. Wait until they wake up before feeding. Feed less at the beginning and more appropriately later. When the silkworms grow up, pay attention to observe the molting process, the process of eating mulberry leaves, body color, mouth, segments, valve, abdominal foot, thoracic foot, tail foot, tail horn, stripes and other morphological characteristics of the silkworms and record them. 3. Making cocoons: After the silkworms have shed their skins 4 times, they will continue to eat mulberry leaves for about 7 or 8 days. They will not eat leaves much, their bodies will be shiny, and they will start to look for a place to make cocoons. At this time, you can put something that can support it in the silkworm box to let it make cocoons. After two days, it will form colorful cocoons. 4. Transformation into moths: After the silkworms make cocoons, after about 2 weeks, they will transform into a moth and pass through one end of the cocoon. The fat one is the mother of the silkworms, and the thin one is the father of the silkworms. 5. Laying eggs: Let the father and mother of the silkworms live together. After a few hours, put the mother of the silkworms on a clean and better piece of paper, turn a small wine glass or other things upside down, and on the morning of the second day, you can see hundreds of silkworm eggs. Pay attention to observe the color changes of the silkworm eggs day by day. In this way, the baby completes a generation. If well protected, these silkworm eggs can hatch again in the spring of the second year. 6. Storage of mulberry leaves: After receiving the mulberry leaves, they may be a little hot or slightly shriveled. You can wash them in tap water, drain the water, put them in a food bag, tie the bag tightly, and put them in the refrigerator. Take out some when needed. After refrigerating for a week, take out the remaining leaves, wash them again, drain the water and refrigerate them again. Note: This experiment provides mulberry leaves based on the needs of raising 20 small silkworms and 10 to 12 large silkworms. Please eliminate them in time and don't raise too many, so as to avoid insufficient mulberry leaves in the future. 7. The conditions required for raising silkworms include nutrition, temperature, humidity, oxygen and other living conditions ① Nutrition; Silkworms have different nutritional requirements at different ages, and the nutrients contained in mulberry leaves at different leaf positions are also different. To raise silkworms well, it is necessary to coordinate the nutrition of mulberry leaves with the physiological needs of silkworms. Generally, young leaves should be used in the young silkworm stage, and mature leaves should be used in the adult silkworm stage. Therefore, we should pay attention to the selection of mulberry leaves, especially when we mix the 3rd and 4th-year leaves together. The tenderer mulberry leaves should be used first, so as to meet the nutritional needs of the silkworm body. ② Temperature: Silkworms are cold-blooded animals, and their body temperature is affected by the temperature of the breeding environment. It is required to maintain 25~30°C throughout the whole age, but the requirements for the external temperature at different ages are different. Generally, the requirements for young silkworms are higher and those for adult silkworms are lower. ③ Humidity: The main function of humidity in silkworm breeding is to keep the mulberry leaves fresh. When young silkworms eat less mulberry leaves and the mulberry leaves are tender, they should pay more attention to maintaining the humidity of the silkworm breeding environment. You can cover the silkworm breeding box with a wet cloth; when they are adult silkworms, as long as the silkworm breeding environment is not particularly dry, it will be fine. ④ Oxygen: Silkworms need oxygen for growth and development just like humans. However, since the respiratory system of young silkworms is relatively developed, hypoxia generally does not occur, and it should not be too stuffy in the adult silkworm stage. 2. How do modern people raise silkworms?If there are silkworms spinning, you must help them build a frame immediately. You can use branches or newspaper strips to make irregular shapes. Otherwise, the silkworms will die because they can't make cocoons because they run out of silk! Silkworms can spin silk when they are 6 to 8 cm long. At that time, their bodies will turn yellow (just like you said) and will shine in the light. They will keep looking up to find a suitable place to spin silk, and their feces will become thinner (probably to drain water...) and will be a little shorter, and they will refuse to eat. At that time, you must help them build a frame! It must be strong enough to bear its weight and have many fulcrums. Of course, some silkworms that do not spin silk can survive by turning into pupae directly. Not all silkworm moths can fly. The ones in my house can't, but it's not certain. You should be careful not to touch the wings of moths too much. The dust they raise may cause allergies. It's okay. You can try it. 3. Tips for raising silkwormsConvenience: Level the forest land, and make each bed about 160 cm wide to facilitate adding mulberry trees and management. Make a small ditch beside the bed for drainage in rainy days, and prepare a piece of plastic sheet to cover the silkworms in rainy days. After the silkworms have begun to sleep and the leaves have opened, move the silkworms to the silkworm bed (seat). Saving money: According to preliminary estimates, each silkworm bed requires 40 silkworm sheets, and even if you build a frame and use foil, it will cost 45 yuan and a house. Raising silkworms on the forest ridge only requires a piece of plastic sheet, and each silkworm bed saves about 30 yuan (excluding the house) compared to raising silkworms in a greenhouse. Less disease: Since silkworms are raised indoors without ventilation, light and high humidity, germs are easy to breed and spread, leading to a variety of silkworm diseases. The cocoons produced turn yellow due to high humidity, which directly affects the cocoon quality and yield. The outdoor ventilation, light, low humidity and fresh air make the silkworms comfortable and healthy, and less likely to get sick. Labor saving: Raising silkworms indoors (sheds) is not only troublesome to spread mulberry leaves, but also requires removing silkworm feces 8 times. The less sand is removed, the stronger the odor is, which helps the reproduction of pathogens. Raising silkworms in open-pits does not require sand cleaning throughout the process. It is not only convenient to add mulberry leaves and easier to manage, but also the traditional leaf feeding can be changed to feeding silkworms directly with branches, eliminating the leaf picking process and greatly saving labor. 4. How to make money by raising silkwormsThat is to raise more, plant some mulberry trees yourself, and you will definitely make money if you raise more. You will get a lot of silkworms and trees when you enter DNF. 5. How to raise silkworms well?They only eat mulberry leaves. Wash the leaves and wipe the water clean. This is very important. Silkworms will die if they eat water. Make sure to wipe the water clean. Throw out the feces every day and replenish mulberry leaves in time. They eat very quickly. Use rape stalks or something to build a frame for them when they are cocooning. When the body is transparent, it means they are about to cocoon. Prepare the frame in advance. After the cocooning, wait for them to come out. Prepare a large white paper, a little thicker, and put all the cocoons on it. When they break the cocoon, they will spit out water, which is brown. They will not fly far. After mating, they will lay eggs and die. The eggs are laid on the prepared paper, and then put near the refrigerator. When the season is right, take them out to hatch and start a new round of life. |
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