Cholesterol concentration in the Babcock strain was significantly higher than in the Lohmann and Starcross-
579 strains in Week 5. The high yolk cholesterol concentrations
in the Babcock strain might be genetic differences
among strains. Han and Lee (1992) observed significantly
lower cholesterol concentrations in hens laying brown
eggs. Yolk cholesterol values found in the current study,
when hens were fed control diets, were comparable with
those of Jiang et al. (1991), who observed 14.6 mg/g yolk
using the same procedure in White Leghorn hens