When did the silkworm baby start spinning and cocooning?

A silkworm's life goes through several stages, such as 1, silkworm eggs 2, ant silkworm 3, young silkworm 4, fifth instar silkworm 5, silkworm cocoon (including pupa) 6 and silkworm moth, which takes about 40 days. Before cocoon formation, each young silkworm has to molt four times, and after molting, the silkworm will increase by one year. When the young silkworm grows into a fifth instar silkworm, it begins to climb a fixed object and spin cocoons. This process usually lasts for a day or two, and then an oval cocoon is formed.

Silkworms feed on mulberry leaves. After eating mulberry leaves continuously, the body turned white and began to peel after a period of time. I can't eat every time I molt. Try not to disturb it and don't throw it away because I am sick.

Silkworms begin to hatch from eggs. Silkworms that have just hatched from eggs are called ant silkworms. They are black and hairy, much like ants. As soon as the ant silkworm comes out of its shell, it eats mulberry leaves day and night, and stops eating after 4 ~ 5 days and enters the sleep period. Silkworms slowly grow into silkworm babies. Every time a silkworm sleeps, it lasts about a day. When it sleeps, it can't eat or move. The surface is sleep. In fact, it takes off its old skin and puts on a new one to continue to grow. Even if you lose your skin once, you will gain one year. * * * will shed its skin four times, and only when it becomes a fifth instar larva will it start spinning and cocooning.

When the silkworm baby is yellow and transparent, it means that it is necessary to spin silk and cocoon. At this time, it is necessary to provide a cross space for silkworm babies to cocoon. It takes two days to form a complete cocoon and molt into pupa for the last time in the cocoon. The transparent things of silk scarves are raw materials for silk making, called silk fibroin and sericin. Silk protein and sericin will become filaments when exposed to the air after being spit out by silkworms. The silk of a silkworm is about1500m long.

About ten days later, it broke through the cocoon and became a silkworm moth. After the cocoon comes out, the female moth's tail will emit a smell to lure the male moth to mate. After mating, the male will die. It takes a female moth about one night to lay about 500 eggs, and then she will die slowly.