The study was carried out to investigate the effect of adding lutein, alfalfa meal, marigold meal, paprika meal, ?-apo-8'-carotenoic acid ethyl ester, canthaxanthin and ?-apo-8'-carotenoic acid ethyl ester+canthaxanthin (3:1) on egg yolk pigmentation and production in white corn and wheat diets. The maximum Roche color fan (RCF) value was found in canthaxanthin and the mixture of ?-apo-8'-carotenoic acid ethyl ester and canthaxantin. The maximum ?-carotene equivalent (BCE) value was found in ?-apo-8'-carotenoic acid ethyl ester. The maximum Hunter L value was found in the control and lutein. The maximum Hunter a value was found in paprika meal. The maximum Hunter b value was found in ?-apo-8'-carotenoic acid ethly ester and alfalfa meal (P0.01).
KIRKPINAR, Figen and ERKEK, Ramazan (1999) "The Effects of Some Natural and Synthetic Pigment Materials on Egg Yolk Pigmentation andProduction in White Corn and Wheat Based Diets," Turkish Journal of Veterinary & Animal Sciences: Vol. 23: No. 1, Article 2. Available at: https://journals.tubitak.gov.tr/veterinary/vol23/iss1/2