（4） Turn the egg: The main function of turning the egg is to avoid the adhesion between the embryo and the egg membrane. The egg yolk is lighter than the protein, and the embryo
It is lighter than egg yolk. The embryo often contacts with the egg membrane. Turning the egg is to change the position of the egg, and the contact point between the embryo and the egg membrane also changes, thus avoiding the adhesion between the embryo and the egg membrane. Number of times to turn eggs: turn eggs every 90 minutes. After 17 days, there is no need to turn the eggs, and the eggs are moved to the hatching area.
（5） Cool egg: The function of the same egg is mainly to dissipate the excess physiological heat in the egg and provide sufficient oxygen for the embryo
To prevent the occurrence of overheating accidents and suffocation of embryos due to hypoxia. It is not necessary to dry eggs for 1-7 days,
Air once a day for 15 minutes for 8-12 days and twice a day for 20 minutes for 13-17 days,
Air it every 4-6 hours from 18 to 21 days for 15 to 20 minutes each time.
Method of airing eggs: open the front door and rear wall movable plate, turn the eggs in the middle of airing eggs once, and airing eggs can also be carried out in combination with the adjustment plate.
5. Test an egg:
Our factory's Aoxiang fully automatic incubation equipment is equipped with an egg illuminator, and users can also make their own egg illuminator. The egg is a translucent body. As long as the surrounding area is dark and the light is through, you can see the internal situation. The purpose of the egg is to check the hatching situation and pick up the eggs without sperm, dead sperm and some weak sperm. Tools for taking care of eggs: find a paper box (wooden box can also be used), put a 25W-40W light bulb in it, dig a 3.0cm hole in the paper box, put the egg on the hole, and you can see the inside from the side. Take the eggs three times:
On the fifth day after incubation for the first time, the eye spots can be seen. The blood vessels account for four fifths of the positive side of the egg, and the bright red color is normal egg. If the blood vessels account for less than four fifths of the positive side of the egg, the eye spots can not be seen, it is a weak sperm egg. If the blood vessels have blood circles, and the blood clots are dead sperm eggs. If the egg is shiny, only the shadow of the egg yolk can be seen, it is a spermless egg. Dead eggs, no eggs and some particularly weak eggs should be thrown away.
The second time the egg is photographed for 10 to 11 days, the blood vessels close at the small end of the egg to form a normal egg. If the blood vessels fail to close, it is a weak sperm egg. If the air chamber is vague, the embryo is in a black mass, and it is a stillborn egg.
For the third time, the egg is exposed to the light source for 18 days, and the small end of the egg is pointed at the light source, and the bright place can no longer be seen. Look at the big end close to the air chamber, and there is a red band with a width of about 1 cm, which is normal egg. If the band is not red, it is stillborn egg.
