**3.9 Yolk**

*Description*: Egg yolk contains saturated fat, fatty acids, minerals, and fat-soluble vitamins A, D, E, B6, B12, Iron, Calcium, Phosphorous, Lutein, Zeaxanthin, Choline, and protein.

*Functions*: The major function of the egg yolk is to provide nutrients for a developing poultry embryo.
