Which of the following flowers is added in poultry feed to intensify the color of egg yolk?

Correct option is D

In poultry farming, the color of egg yolk is an important quality trait influencing consumer preference. To naturally enhance the yolk color, certain flowers rich in xanthophylls (yellow-orange pigments) are used as feed additives.
Key Points:
· Marigold (Tagetes spp.):
· Marigold flowers are rich in xanthophyll pigments like lutein and zeaxanthin.
· These pigments are deposited into the egg yolk, giving it a deep yellow to orange color.
· Marigold powder or extract is commonly added to poultry feed to achieve:
· Attractive yolk color.
· Market premium for eggs.
· Natural pigment enrichment without synthetic additives.
· This practice is safe, natural, and highly economical.
Other Options Explained:
· (a) Gerbera:
· Grown mainly for ornamental purposes; not used in poultry feed.
· (b) Chrysanthemum:
· Also an ornamental flower; not a common feed additive for yolk color.
· (c) Gaillardia:
· Ornamental plant; no significant role in poultry feed.