Question

what causes yolk to be different in colour?​

Answer 1

Answer:

Protein present in it causes yolk to be different in colour.

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Answer 2

Answer:

Despite this common misconception, the exact shade of your egg yolk has nothing to do with the chicken breed—although it can affect the color of the eggshell.The shade of an egg yolk is completely determined by the hen’s diet. Hens that are given feed full of yellow-orange pigments will lay eggs with darker yolks. It’s as simple as that! No artificial coloring is allowed in chicken feed, but some farmers will add marigold petals to give yolks an orangey color boost. Reddish yolks are made possible by adding capsicum (i.e. red bell peppers) to chicken feed, and throwing in a dash of paprika can have the same effect.

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