The female germ cell (ovum) material maintained in the center of the egg by the chalazae.
Related terms
Yolk colour
A consumer-oriented indicator of eggs; influenced by pigments present in the fee...
Yolk index
Ratio of yolk height to yolk width.
Yolk sac
An extra-embryonic membrane enveloping the yolk; site of the first extra-embryon...
Young pullet, pullet chick
Sexed female chick from hatch to 5–8 weeks of age.
