CATDOLL : CATDOLL: How many days does it take for silkworms to mature? (How many days does it take for silkworms to mature?)

1. When do silkworms mature?

The first instar of a silkworm is four to five days; the second instar is three to four days; the third instar is four days; the fourth instar is six days; the fifth instar is seven to nine days; the pupal stage is fourteen to eighteen days; and the moth stage is three to five days.

When silkworms reach the end of the fifth instar, they gradually show the characteristics of maturity: first, the feces they excrete change from hard to soft, and from dark green to leaf green; their appetite decreases, and the amount of food they eat decreases; the front digestive tract is empty, and the chest becomes transparent; then they stop eating completely, their bodies shorten, and their abdomens tend to be transparent; their head and chest are raised, they spit out silk threads from their mouths, and they swing left and right and up and down to find a place to build their cocoons. Such silkworms are called mature silkworms.

2. What is the growth cycle of silkworms?

The growth and development of silkworms are related to temperature, humidity, food, etc. Generally, the accelerator period is ten to eleven days. The larval stage is about twenty-five days (specifically, the first instar is four to five days; the second instar is three to four days; the third instar is four days; the fourth instar is six days; the fifth instar is seven to nine days.) The pupal stage is fourteen to eighteen days. The moth stage is three to five days. After the moth emerges, it will no longer eat, and its wings will harden after about an hour. After the wings harden, it will mate. Each female moth will lay about 300 to 400 eggs. The purpose of the silkworm's emergence into a moth is to mate and lay eggs.

3. When do silkworms mature?

Silkworms in the 4th to 5th instar are called adult silkworms. The optimal temperature is 25℃, with a 3℃ difference between dry and wet. Usually, after the second mouthful of leaves are given at the fifth instar, the silkworms are moved to the ground. Before moving to the ground, the ground should be cleaned and disinfected with bleaching powder. After it is dry, a layer of lime powder is sprinkled on the ground, and then the silkworms are moved to the ground. When raising adult silkworms, good ventilation should be ensured, and disinfection should be strengthened. The silkworm body and silkworm seat should be disinfected with lime powder once a day (before feeding mulberry). Do not pick yellow leaves, muddy leaves, soot leaves, or leaves bitten by insects.

Mature features

Big silkworms eat a lot, and to be well fed with good mulberry leaves, one piece of silkworm seeds requires 500 kg of leaves. A fifth-instar silkworm begins to mature after 6 to 7 days. The characteristics of a mature silkworm are: it stops eating mulberry leaves, excretes a lot of soft green feces, has a transparent chest, and its body is slightly soft and shortened, and is a waxy yellow color; its head swings from side to side. This is the best time to spawn.

4. How many days does it take for a four-sleeping silkworm to make a cocoon?

It usually takes 20-28 days from egg hatching to cocooning. First instar: four to five days; second instar: three to four days; third instar: four days; fourth instar: six days; fifth instar: seven to nine days.

The first instar is when the silkworms molt for the first time; the second instar is when they wake up from sleep; the third instar is when they molt again; the fourth instar is when they molt for the third time, and the fourth molt is also called the big sleep. After the big sleep, they enter the fifth instar. At the end of the fifth instar, the silkworms gradually show the characteristics of maturity. People put the mature silkworms in special containers or on cocoons, and the silkworms spin silk and make cocoons.

5. When do silkworm cocoons mature?

It usually takes about a month for silkworms to spin cocoons. Silkworms are metamorphosis insects, and the most common is the mulberry silkworm, also known as the domestic silkworm, which is one of the economic insects that feeds on mulberry leaves and spins silk cocoons. The mulberry silkworm originated in my country. Its development temperature is 7-40 degrees, and the suitable temperature for breeding is 20-30 degrees.

6. How long does it take to raise silkworms?

For example, it takes 40-50 days for silkworm eggs to turn into silkworm moths. The growth and development of silkworms is related to the temperature, humidity and food in the growth environment. Generally, the estrus period is 10-11 days, and the larval period is about 25 days.

7. How long does it take for silkworms to spin silk and make cocoons?

23-26 days.

It takes 23-26 days for a silkworm to molt four times from birth to maturity and to spin silk and make cocoons. If it is underfed or the temperature is too low, the time will be longer.

But generally it does not exceed 30 days. If it exceeds 30 days, the quality of the cocoon will be poor and the cocoon will be small. Silkworms sleep for more than one day each time they molt. When molting, silkworms do not eat mulberry leaves and lie there stiffly. Don't think it is dead and throw it away.