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Privacy & Legal Glossary

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Glossary
Yolk sac

Yolk sac

Definition

An extra-embryonic membrane enveloping the yolk; site of the first extra-embryonic blood circulation.

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Next → Young pullet, pullet chick

Related terms

Yolk

The female germ cell (ovum) material maintained in the center of the egg by the ...

Yolk colour

A consumer-oriented indicator of eggs; influenced by pigments present in the fee...

Yolk index

Ratio of yolk height to yolk width.

Young pullet, pullet chick

Sexed female chick from hatch to 5–8 weeks of age.

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