How many days does the silkworm grow?

The growth cycle of silkworm is about 40 days, and its development is related to temperature, humidity, food and so on. Generally speaking, the puberty period is 10-11 days, and the larval stage is about 25 days. It is 4-5 days in the first instar, 3-4 days in the second instar, 4 days in the third instar, 6 days in the fourth instar, 7-9 days in the fifth instar, 14-18 days in the pupa and 3-5 days in the moth stage.

How many days is the growth cycle of silkworm?

1, silkworm egg hatching: after 8-9 days of green period, silkworm baby hatched from silkworm eggs, just out of silkworm black and small, commonly known as ant silkworm.

2. The first instar: the color of the first instar silkworm changed from black to dark brown, ate mulberry for 3-4 days, and did not eat much. After entering the sleep period, the skin will molt for the first time, and the sleep period will last for 8-12 hours.

3. The second instar: the silkworm grows up obviously, the color becomes lighter, the eating time of mulberry is about 3 days, and the sleeping period is 8-12 hours.

4. The third age: the color of silkworm body changed to light brown, the food intake began to increase, and entered the sleeping period after about 4 days. The 1-and 3-year-old silkworms are generally called young silkworms, and they enter the big silkworm stage after 10-14 hours.

5. The fourth instar: the silkworm that entered the big silkworm stage developed rapidly and its food intake increased obviously. 4-year-old time is generally 5 days, the sleep period is very long, generally known as the big sleep period, the sleep period can reach 30 to 40 hours.

6. Fifth instar: the period when the silkworm eats the most leaves, accounting for more than 75% of the total leaf consumption in about 7 days. Seven days later, the silkworm began to shorten and brighten, commonly known as mature silkworms, which no longer ate and began to spin cocoons.