caa a22 4500 397568053 CHVBK 20180308164833.0 cr unu---uuuuu 161202e199610 xx s 000 0 eng 10.3382/ps.0751258 doi (NATIONALLICENCE)oxford-10.3382/ps.0751258 Time Course Evaluation of Carotenoid and Retinol Concentrations in Posthatch Chick Tissue [Elektronische Daten] [AKRAM-UL HAQ, CHRISTOPHER A. BAILEY] Carotenoid and retinol concentrations were determined in chicks hatched from carotenoid-enriched eggs while being fed a carotenoid free starter diet. Single Comb White Leghorn (SCWL) hatching eggs were obtained from breeder hens fed diets enriched with either 0.2% β-carotene, canthaxanthin, lutein, or basal control. Twenty-five day-old chicks hatched from each treatment group were placed in a battery and fed a carotenoid-free basal diet. At 1, 4, 7, 10, and 13 d, five chicks per treatment were randomly selected, and blood serum, liver, and unabsorbed yolk sac were collected for carotenoid and retinol analysis. There were no significant differences in retinol concentrations in the serum, liver, and unabsorbed yolk sac of the chickens. Only small amounts of β-carotene were detected in the chick tissues. Concentration of all three carotenoids and retinol were greater in the liver and unabsorbed yolk sac than in serum. In the serum and liver, respective carotenoid concentrations decreased and retinol concentration increased with increasing age, whereas respective carotenoid and retinol concentrations in the unabsorbed yolk sac increased over time. It may be concluded that yolk sac carotenoids are not absorbed well, as unabsorbed yolk sac concentrations increased over time, and that carotenoid in serum and liver decrease linearly with increasing age. © 1996 Poultry Science Association, Inc. Metabolism and Nutrition nationallicence egg nationallicence β-carotene nationallicence canthaxanthin nationallicence lutein nationallicence retinol nationallicence HAQ AKRAM-UL 1To whom correspondence should be addressed. Akram-ul Haq, Department of Nutrition and Food Science, 204 Funkhouser Bldg., University of Kentucky, Lexington, KY 40506-0054. aut BAILEY CHRISTOPHER A. aut Poultry Science Oxford University Press 75/10(1996-10), 1258-1260 0032-5791 75:10<1258 1996 75 ps https://doi.org/10.3382/ps.0751258 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0751258 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- HAQ AKRAM-UL 1To whom correspondence should be addressed. Akram-ul Haq, Department of Nutrition and Food Science, 204 Funkhouser Bldg., University of Kentucky, Lexington, KY 40506-0054 aut NATIONALLICENCE 700 1- BAILEY CHRISTOPHER A. aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/10(1996-10), 1258-1260 0032-5791 75:10<1258 1996 75 ps Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford