Feeding and management techniques of silkworm

Do a good job to make up and promote youth

The day before getting silkworm eggs, the co-rearing room should be heated to 38 ℃, and the temperature difference between dry and wet should be 2 ℃ ~ 3 ℃. Immediately after the silkworm eggs were collected, they were spread evenly on the silkworm pedestal paper, and the room temperature was raised to 43 ℃, and the temperature difference between dry and wet was 1 ℃ ~ 2 ℃. The silkworm room heated by coal stove should pay attention to do a good job of ventilation. The silkworm room should be strictly protected from light to make the embryo develop neatly. If the silkworm eggs turn green, the ants can be collected by photosensitivity on the second morning, otherwise it is appropriate to collect ants in the early morning of the third day.

Timely ant collection

The time of collecting ants is too early, and some silkworms do not have an appetite when collecting ants, resulting in silkworms eating mulberry differently. If the ants are collected along with the collection, it will cause the underdevelopment of silkworms. The most suitable time for collecting ants should be 2-3 hours after ovalization, and most of the ant silkworms already have an appetite and begin to wander and look for food. In the late autumn, the silkworms collect the ants at 8: 9 a.m. and try to finish by 10:00. If unhatched silkworm eggs are found among the collected ants, they should continue to be protected in the dark and be photosensitive to collect ants the next day.

Control density

If the silkworm seat is dense and uneven, it will lead to uneven development of silkworms. Therefore, every time before giving mulberry, the seats should be expanded and evenly seated, requiring that the young silkworms should not touch the silkworms and the big silkworms should not overlap.

Rational use of leaves

In order to promote the development of young silkworms, it is necessary to collect leaves and feed them according to the standard of leaves before each instar, so as to avoid using old and tender mulberry leaves. In addition, give mulberry a uniform thickness.

Timely change the position of silkworm foil

The silkworms in different positions in the same silkworm room are affected differently by temperature. For example, the temperature above the silkworm shelf and near the fire source is on the high side, the silkworm develops fast, on the contrary, the temperature is on the low side, and the silkworm develops slowly. Therefore, attention should be paid to changing the position of silkworm foil frequently. The period of young silkworms is changed at least once a day.

Timely rate of food

Early feeding, some silkworms do not have an appetite, and even some sleep silkworms, resulting in the same batch of different nibbling mulberry, uneven development, so it is necessary to eat timely. Before sleep, if the silkworm is not well developed, the feeding time after sleep can be delayed by 3-4 hours compared with the normal rate diet, which can ensure that the slow-growing silkworm and the fast-growing silkworm enter the leaves at the same time.

Screening and promotion

General sleep after 2 times after giving mulberry, still sleep not evenly, should add net to promote green. It is proposed that the green-headed silkworm should be placed near the heat source, and the large silkworm green head can be placed on the upper layer of the silkworm frame. A small number of stunted and weak silkworms are resolutely eliminated.

Use the cluster on the grid at the right time

The cluster on the checkered cluster is one of the important measures to improve the quality of cocoon, pick up the upper cluster of silkworm timely, pick up the cluster of unripe silkworm and overripe silkworm.

Do a good job of protection in clusters

After the silkworm cluster, it is necessary to do a good job in the protection of the cluster, timely turn the square cluster, pick up and swim away from the silkworm, so as not to let it pollute other cocoons. Keep it at 23 ℃ ~ 25 ℃ at room temperature after the cluster, and let the silkworm spin silk quickly and well. In addition, prevent rats from stealing cocoons.