Silkworm rearing technology
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2. Amount of mulberry used for leaf collection 1: 1 species from collared silkworm to mature silkworm need about 900-1000 pounds of leaf, of which 4 instar leaves are about 150 pounds, 5 instar leaves are 750-850 pounds, 5 instars for daily use The leaves are approximately: 50 pounds on the first day, 120 pounds on the second day, 160 pounds on the third day, 200 pounds on the fourth and fifth days, 100 pounds on the sixth day, and 50 pounds on the seventh day.
2Collecting leaves and storing leaves in normal weather, usually in the morning and evening, leaves, noon, large sun, high temperature, no leaf, in the morning to wait for the fog to dry before mining leaves, picking leaves after 5 o'clock in the evening, rain stopped in the rain After the leaves are dry, they can be harvested at any time. The fourth instar is taken from the fifth shoot under the top bud. After the fifth instar, the mature leaves are harvested after the second day. Do not use dew, leaves, and yellow leaves. After harvesting, put it back in the leaf chamber (underlaying film), timely shaking and loosening and spreading heat for more than 10 minutes and then cover it with a film. The newly harvested leaf can not feed silkworm immediately, and it must be shaken and loosened before it can be fed. Before each leaf feed, the film should be lifted, fluffed with mulberry leaves, then fed with silkworms, fed with silkworms, and then covered with the film.
Feeding silkworms four times a day, respectively: at noon: 7:00, 12:00, 5:00:00, 10:00, each feed leaf amount is more than one leaf left as the basis, and when the silkworm is fed, there are many leaves remaining. Feed less, eat more light and feed more. The one-time meal in the evening is due to the amount of leaves that feed 1.5 meals during the day.
4, expansion, removal of sand, sleep treatment 1 expansion: In order to ensure silkworm silkworm, silkworm nest should be appropriate density generally 1 sericulture has 2 silkworm position, ground breeding each silkworm need 30m2, with The silkworm grows and continues to expand.
2 In addition to sand (for silkworm excrement): In order to ensure that the silkworms are clean and free from disease, we must change the silkworm excrement on schedule, change back to the second day, replace it before sleep, change it after 5 instar feeding, and then change it every other day. Change again. It is required to use nets to remove and eliminate hand-destroying silkworms and have low work efficiency. After removing the sand, first wash the hands and then feed the silkworms. The excreted silkworm excrement can be removed from the silkworm room in time and can be used as an orchard and rice for fertilizer. The silkworm is strictly prohibited from being applied to the mulberry garden, otherwise the silkworm is susceptible to disease.
3Sleep Treatment: After returning to China, we will sleep once and sleep (commonly known as sleep). Generally, we will feed back for 3 to 3.5 days. We will sleep in silkworms. The characteristic is that the silkworm is yellow, white and shiny, and the amount of leaf fed is gradually reduced. Triangle leaf feed. When most of the silkworms (about 90%) have stopped eating and go to sleep, there are still a few people who are still awake, and they must lift green. This is done by first spraying a layer of lime. After the silkworm nets are added to the silkworm net, they are sparsely fed and fed. In the absence of silkworm nets, limestone is sparsely fed and fed to a layer of leaves. After the silkworm has climbed up to eat the leaves, the silkworms and the nets and leaves are brought together to feed the leaves until sleeping together. Finally, there are still a few who do not sleep. Hand out the eliminated, because the delay of silkworm is easy to attack. Sleeping silkworm features, body color, white and shiny, the body is shortened, the head has a grayish white triangle, the mouth becomes smaller and sharper, the head lifts still and does not move, after sleeping, spread a layer of lime.
4 Timely feeding: The first time the larvae wake up, feed the leaves and call them foraging. Do not eat too early, so as not to damage the silkworm mouthparts, and it should not be too late to prevent them from being hungry. In general, more than 98% of silkworms are grasped and crawled to feed, and they can feed and feed on chloramphenicol water. The method is to add half a catty of chloramphenicol plus clean water and mix 5 pounds of leaves. One piece of silkworm cocoon eats 3-4 pieces of food, and sprinkles a layer of lime powder before feeding. After feeding chloramphenicol water leaves, do not feed too many leaves to feed. Use 7-8 as appropriate, feed 2 leaves of the silkworm Can be landed (ground lime first layer).
5, to prevent silkworm disease: 1 adhere to the "three wash your hands", "three shoes" system. Into the silkworm room first wash your hands, collect leaves, cut the leaves, wash your hands before feeding silkworms, wash your hands after removing sand, and enter the silkworm room and leaf chamber to change shoes. 25 instar lime once a day, wet days or found that diseased silkworms are scattered twice a day, pay attention to lime immediately after feeding the leaves to prevent silkworm spit water. At the age of 35, 2-3 times of chloramphenicol or pyodesia were fed. After 45 days of feeding, carefully check the weak silkworms after 2 days, and then find that the weak silkworms or diseased silkworms are buried in a concentrated lime bowl in time and do not feed poultry.