Giving chickens certain natural color supplements like paprika or special bacteria powder makes their egg yolks much more yellow or orange — way more colorful than usual.

15

Pro

0

Against

Evidence from Studies

Supporting (1)

15

Community contributions welcome

15

Effect of Dietary Carotenoid on Egg Yolk Color and Singlet Oxygen Quenching Activity of Laying Hens

Randomized Controlled Trial

Animal

2022 Apr 25

The study found that adding paprika, marigold, or Paracoccus to chicken feed made egg yolks more colorful, just like the claim says, especially in certain chicken types.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Effect of Dietary Carotenoid on Egg Yolk Color and Singlet Oxygen Quenching Activity of Laying Hens

Score: 15

DOI: 10.2141/jpsa.0210032

Similar Assertions

Giving certain plant and bacterial supplements to two types of chickens—Rhode Island Reds and Silkies—makes their egg yolks richer in colorful nutrients called carotenoids after a month, and Silkies seem to absorb more of these nutrients than the other chickens.

15

0

74%

Giving older laying hens paprika extract in their food makes their egg yolks more colorful, especially in Rhode Island Reds — they respond more than Silky Fowl hens when given a higher dose.

14

0

70%