Why is it a few days before my silkworm eggs hatch when they are black?

The silkworm eggs themselves are black and dark gray, so don't worry; Basically, it is a few days to more than ten days;

Silkworms reproduce by eggs. The silkworm eggs look a lot like fine-grained sesame seeds, about 1 millimeter wide and about millimeters thick. A female moth can lay about 450 500 silkworm eggs weighing about 1 gram.

When the silkworm eggs are first laid, they are pale yellow or yellow, and after 1 2 days, they turn red bean color, and after 3 or 4 days, they turn gray-green or purple again, and they no longer change, which is called fixed color.

The outer layer of the silkworm egg is a hard egg shell, and the inside is the yolk and serous membrane, and the embryo in the fertilized egg continuously ingests nutrients during the development process, and gradually develops into an ant silkworm, which crawls out of the egg shell, and the egg shell becomes white or light yellow after the egg shell is empty.

Egg disinfection standards and methods.

Disease prevention agents should be selected according to different prevention and control objects. The disinfection method of hydrochloric acid and formaldehyde mixture can also be used to disinfect with 3% formaldehyde for 30min, and then disinfect with 10% hydrochloric acid for 10min. Formaldehyde and bleaching powder are mainly used to prevent and treat pus and microparticle disease; Hydrochloric acid and sulfuric acid are mainly used to prevent and treat softening diseases.

The mixture of formaldehyde and hydrochloric acid has a good disinfection effect on pus, particulate disease and softening disease.

Egg surface disinfection method 13 5 days after the bathing of the silkworm eggs or 1 2 days before the silkworm emerges, the silkworm eggs are packed into a plastic gauze bag and other leakable containers, immersed in clean water, the water temperature is the same as the natural temperature, and gently rubbed to wash away the attachment on the egg surface. It can also be used to wash the eggs with sodium hydroxide solution for 55s to wash off the adhesive substances on the egg surface and have a disinfection effect, and then rinse with clean water and empty the water.

The use of sodium hydroxide bath because of its solubilizing effect on the egg shell, the concentration and time should be strictly controlled. It can also be disinfected without bathing. 2.

Egg surface disinfection involves immersing the silkworm eggs that have been bathed and leaking water into a disinfectant solution at a standard temperature and concentration, and then rinsing the silkworm eggs with clean water close to the temperature of the disinfectant solution until there is no smell of medicine. Finally, the silkworm eggs are placed in a non-toxic environment to dry naturally.

The silkworm eggs themselves are black and dark gray. Not much to say, silkworm boxes are best shoeboxes because of the large space of shoeboxes. A dozen holes must be punched on it, ventilated. It is best to have heating in the home and put it next to the heating. It only took me a week to do this.

Mine too, don't worry, it will always come out. Two of mine have already turned yellow in half, so pay attention to the temperature at this point.

Hello, I am glad to answer for you, the diapause mechanism of silkworm eggs. After the silkworm eggs are laid, they are placed at 25 for protection, and after a week, they will turn into the intrinsic color of the variety, that is, enter diapause. Diapause is released after being exposed to low temperatures for a period of time during overwintering. High temperature greening can be incubated.

Hello, if the silkworm eggs do not hatch after blackening, it is very likely that the silkworm eggs have lost their vitality. When the silkworm eggs have abnormal discoloration, it is usually caused by the poor quality of the silkworm eggs, the temperature is too low or too high, and the humidity is too high or too small. At this time, the following measures can be directed:

1.Inspect silkworm eggs: Carefully inspect silkworm eggs for problems such as pests, diseases and malnutrition, and deal with them in a timely manner.

If silkworm eggs infected with germs or insect pests are found, they need to be cleaned and disinfected in time. 2.Adjust environmental conditions:

Maintaining the right temperature and humidity is essential for the growth and development of silkworm eggs. If the ambient temperature is too low or too high, it is necessary to take heating or cooling measures. If the humidity is too high or too low, it also needs to be adjusted accordingly.

It can also enhance ventilation and promote air circulation. 3.Replacement of fresh silkworm eggs:

If a batch of silkworm eggs has lost its viability, you can consider replacing it with fresh silkworm eggs for incubation. At the same time, it is recommended to purchase high-quality seedlings produced in formal breeding bases. 4.

Pay attention to management details: During the incubation of Yu Brother, it is also necessary to pay attention to management details, such as keeping the incubator clean and hygienic, regularly turning silkworm eggs and other measures. In short, in order to make the silkworm eggs hatch successfully, it is necessary to pay attention to environmental conditions and management details, and deal with problems in a timely manner.

Dear, hello, the blackening of silkworm eggs may be due to some external influences, such as the temperature is too high or too low, the humidity is too large or too small, and the virus is infected. If the silkworm eggs are straight and do not hatch, there are several possibilities: Pupae death:

Silkworm eggs will gradually develop into pupae during the incubation process, and if the pupae die, they will not hatch. Pests and diseases: Silkworm eggs may be attacked by germs or insect pests, resulting in inability to hatch normally.

Insufficient incubation conditions: Silkworm eggs need a certain temperature and humidity to hatch, and if these conditions are insufficient, the hatching effect will be affected. It is recommended that you check the condition of silkworm eggs, observe whether the egg shell is cracked, place the silkworm eggs in a suitable temperature and humidity environment, and add an appropriate amount of nutrients to improve the hatching rate.

If the above methods still do not solve the problem, it is recommended to consult a sericulture expert.