The second time to test egg (11 to 12 days):mainly to check the development
of egg embryo,the welldeveloped embryo is enlarged, with blood vessels
inside, and the air chamber is large and sharply demarcated.
The third time to test egg (16 to 17 days):Light from the pointed side ,a well-
developed embryo is larger, meanwhile full of egg, and no light in most places. If
it's a dead egg,the blood vessels in the egg are blurred,Parts yellow near the air
chamber,the bounda between the e and the air chamber is not clear .
8. Increase humidity and decrease temperature during hatching period , it prevents
water from evaporating too quickly in the eggs.Most importantly ,increase
humidity , prevent dehydration and reduce the temperature to avoid high
temperature and high humidity, especially the hatching period last for a long
time.And the temperature should be no more than 37.5
0
C in 19th-21th days.
1. Setting key
2. Adding key / function selection key
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