Date de parution
TAILLE DU FICHIER: 2,53 MB
DATE DE PUBLICATION: 2015-May-01
AUTEUR: Andy Cawthray
NOM DE FICHIER: Chicken & egg.pdf
Chicken eggs are graded according to the size of this air cell, measured during candling. A very fresh egg has a small air cell and receives a grade of AA. As the size of the air cell increases and the quality of the egg decreases, the grade moves from AA to A to B. This provides a way of testing the age of an egg: as the air cell increases in size due to air being drawn through pores in the ...
Chickens — like other birds — lay fertilized eggs via sexual reproduction. Depending on the breed of chicken, a hen will begin laying eggs between five and seven months of age. The frequency of egg-laying varies between breeds, over different seasons, with moulting and with age, but most breeds that are used for egg production will lay an egg every one to two days.