| abstract |
(57) [Summary] (Correction) [Structure] The feed of poultry, fish or crustaceans contains one or more carotenoids. Examples of the carotenoids include 2'-dehydroplectaniaxanthine, 1-hydroxy-3,4-didehydro-1,2-dihydro-Ψ, Ψ-caroten-2-one, desmethylspheroidenone, spheroidenone, 5'-hydroxy-5 ', 6'-dihydro-4'-apo-β-carotene-6'-one, 1'-hydroxy-3 ′, 4′-Didehydro-1 ′, 2′-dihydro-β, Ψ -Carotene-4,2'-dione and 5'-hydroxy- 5 ', 6'-dihydro-4'-apo-β-carotene- 4,6'-dione can be mentioned. [Effect] Efficient and high-quality coloring of poultry egg yolks, integuments and / or subcutaneous fats is possible. |