Yolk color is fully controlled by the producer using feed supplements: https://www.dsm.com/markets/anh/en_US/products/products-carotenoids/products-carotenoids-

Yolk color is fully controlled by the producer using feed supplements: https://www.dsm.com/markets/anh/en_US/products/products-carotenoids/products-carotenoids-carophyll.html https://www.dsm.com/markets/anh/en_US/products/products-caro...