“…In addition to imparting color to egg yolks, there is increasing evidence that carotenoids such as p-carotene are anticarcinogenic (Peto et al, 1981;Alam and Alam, 1987;Dedari et al, 1987;Pastorino et al, 1987) as well as immunoenhancing (Alexander et al, 1985;Bendich and Shapiro, 1986). Marusich et al (1960) found that canthaxanthin, isozeaxanthin, isozeaxanthin diacetate, and capsanthin imparted an orange tinge to the yolks which was not acceptable. Williams et al (1963) reported that there was a greater deposition of carotenoids in eggs from hens receiving corn than from hens receiving alfalfa or corn gluten meal.…”