During incubation of chicken eggs; the first candling is usually carried out after by Sunday | Apr 14 | Animal Husbandry WAEC | 0 comments A. twenty-one days B. eighteen days C. ten days D. six days Correct Answer: Option D – six days Users Also Read These:The incubation period of a chicken egg is?How many days does is used for incubation of an egg…Which of the following factors would you consider…If feed efficiency for egg production is defined as…The least important factor for successful incubation…