How many days does is used for incubation of an egg to release chick? by Sunday | Sep 3 | Biology JAMB | 0 comments A. 21 B. 22 C. 20 D. 23 Correct Answer: Option A – 21 Users Also Read These:The incubation period of a chicken egg is?How many days are allowed in life insurance as days…A radioactive substance has a half-life of 3 days.…The incubation period for turkey is?During the incubation of fertilized poultry egg,…