Archiv fur Geflugelkunde, vol.74, no.3, pp.158-163, 2010 (SCI-Expanded)
Two experiments were designed in order to study the effect of four dietary levels of lutein on egg yolk lutein, and zeaxanthin and lutein concentrations in the plasma of male participants after consuming these enriched eggs. In experiment one, 80 single comb White Leghorn commercial hybrids were randomly distributed in four groups with four replicates. Each replicate consisted of 5 hens per cage. Four levels of lutein (0, 250, 500, 750 mg/kg) were fed as treatments in a completely randomized statistical design. In experiment two, four men (per treatment) with the average age of 60 years, were fed one enriched egg per day for 4 weeks. The lutein was transferred into the yolk (p < 0.01). Seven days after supplementation, the DSM scale of the yolk's colour significantly (p < 0.01) increased from 5.5 to 13.7. The plasma content of lutein was significantly increased in human adults who consumed one egg per day of treatments 500 and 750 mg/kg (p < 0.05). © Verlag Eugen Ulmer, Stuttgart.