The Claim
Dietary supplementation with paprika extract, marigold petal extract, or Paracoccus cell powder at doses of 30 mg/kg, 60 mg/kg, and 28 mg/kg total carotenoids, respectively, leads to increased total carotenoid content in egg yolk in both Rhode Island Red and Silky Fowl laying hens after 4 weeks of feeding, with greater carotenoid accumulation observed in Silky Fowl compared to Rhode Island Red hens across all supplemented groups.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
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.
See the scientific wording
Dietary supplementation with paprika extract, marigold petal extract, or Paracoccus cell powder at doses of 30 mg/kg, 60 mg/kg, and 28 mg/kg total carotenoids respectively causes increased total carotenoid content in egg yolk in both Rhode Island Red and Silky Fowl laying hens after 4 weeks of feeding, with greater accumulation observed in Silky Fowl compared to Rhode Island Red hens across all dietary groups.
What the research says
1 studyStudy: Effect of Dietary Carotenoid on Egg Yolk Color and Singlet Oxygen Quenching Activity of Laying Hens
The study gave hens paprika, marigold, or Paracoccus supplements for 4 weeks and found their egg yolks had more color-boosting carotenoids, especially in Silky Fowl, just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.