Why Are Some Egg Yolks More Orange?
Effect of Dietary Carotenoid on Egg Yolk Color and Singlet Oxygen Quenching Activity of Laying Hens
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Some chickens are fed special plant powders to make their egg yolks more orange. This study checked which chickens make the most colorful and healthy yolks when given these powders.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 515 / 90
Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Some chickens are fed special plant powders to make their egg yolks more orange. This study checked which chickens make the most colorful and healthy yolks when given these powders.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 515 / 90
Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Publication
Authors
Kojima S, Koizumi S, Kawami Y, Shigeta Y, Osawa A
Related Content
Claims (6)
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.
Silky Fowl chickens put more eye-healthy nutrients into their egg yolks than Rhode Island Reds when they eat certain colorful plant supplements — it’s in their genes!
Giving hens certain natural supplements like paprika or marigold extract makes their egg yolks better at neutralizing harmful oxygen, and this works in two different types of chickens after a month.
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.
Silky Fowl chickens naturally have eggs with better antioxidant power than Rhode Island Red chickens, even without any special diet — and it gets even stronger when they eat carotenoids.