【Incubation technology】When the chicks hatch, follow the specific methods, operation steps and precautions of the eggs.

In the incubation process of the chick, you can use the egg method to check the embryonic development status, in order to timely understand the status of embryonic development and whether the incubation conditions are appropriate, the egg shooting method, divided into three steps: head photo, second photo, re-examination, take out a plate according to the inspection, and immediately put it back into the incubator after the photo.

</h2>

The first egg shooting is performed on the 8th day after hatching, and by taking the eggs, the spermless eggs and dead embryo eggs are picked out. The embryo of the fertilized egg develops normally, the blood vessels are radially distributed, the color is bright and red; the dead embryo egg is lighter in color, there are irregular blood arcs and blood rings inside, and there are no radial blood vessels; the spermless egg is shiny, there is no vascular network, and only the shadow of the yolk can be seen.

The second illumination of the eggs is performed on the 21st-22nd day after the incubation of the human to remove the dead embryonic eggs. Live embryonic eggs are black and red, with curved borders, oblique air chambers, and coarse blood vessels around them; dark red blood vessels are not visible around the air chambers of dead embryonic eggs, the edges are blurred, and some eggs are lighter in color and have small hair.

The egg shooting method is divided into three steps: head photo, second photo and re-examination, and one plate is taken out of one plate after inspection, and immediately put back into the incubator after taking pictures.

Egg illumination refers to the use of egg lamps to look through the eggs under dark conditions after incubation for a certain period of time to check the development of chicken embryos and eliminate the dead embryos in the early stage of unfinished eggs. Taking care of the eggs is an indispensable part of the incubation process.

1. Head photos

Chicken embryos are hatched for 5 to 6 days, duck embryos at 7 days, and goose embryos at 8 days.

The purpose of the headpat: to observe the development of the embryo, to detect spermatozoa, dead embryonic eggs and broken shell eggs. At this time, the normally developed embryo, the blood vessel network is distinct, radial distribution, the diffusion surface accounts for 4/5 of the egg body, and there is a clear black dot when illuminating the egg, commonly known as "single bead".

2. Two photos

Chicken embryos are hatched for 18 days, duck embryos at 26 days, and goose embryos at 29 days.

3. Re-inspection

Further inspection of detected embryonic eggs, on the one hand, in order to detect missed and misinspected embryos, on the other hand, can improve the detection accuracy rate and improve the level of business.

<h2 class= "pgc-h-arrow-right" > second, the precautions for taking eggs</h2>

It is best not to leave the embryo eggs outside the incubator for more than 20 minutes, and the time should be shortened when the room temperature is low. Do not remove too many embryos and eggs from the incubator each time, it is best to take out one plate after examination, and put it back in the incubator immediately after taking pictures. When taking the egg, the action should be light when the egg probe is close to the embryo egg, so as not to break the eggshell, and the eggshell is more likely to break when taking the second shot, so be extra careful.

If conditions permit, a special egg room should be set up, with an area of about 30 square meters, and a blackout curtain should be installed, requiring a room temperature of more than 25 ° C. There is no special egg room can also be in the incubation room to illuminate eggs, but must be arranged to illuminate eggs at night, the main disadvantage of taking eggs in the incubation room is that the winter room temperature is difficult to reach more than 25 ° C requirements.