How colorful chicken food affects quail eggs
Improvement in the Coloration and Quality of Japanese Quail Eggs Through Supplementation with Natural Pigments
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists fed quails special plant powders to see how it changed their eggs' color and freshness over time.
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
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Max 72Case-Control Studies
Max 58Cross-Sectional Studies
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Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Scientists fed quails special plant powders to see how it changed their eggs' color and freshness over time.
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 511 / 72
Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
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Claims (5)
Farmers add paprika and marigold to chicken food to make egg yolks look more orange because people think those eggs are healthier—even if they're not.
Adding marigold flower extract to chicken feed makes egg yolks more colorful and boosts a healthy nutrient called beta-carotene, which might make eggs look better to shoppers.
Giving Japanese quails food with a little bit of paprika or marigold extract makes their egg yolks more colorful, which people usually like better.
If you feed Japanese quail a diet with 0.8% paprika, marigold, or both, they don’t turn their food into body weight or eggs as well as quail that don’t get those supplements.
Feeding quails natural plant pigments from paprika and marigolds might help keep their eggs fresher for longer by slowing down changes inside the egg as it's stored.