| 摘要 |
PURPOSE:To obtain the aimed feed to enhance color tone of hen's vitellus, body color of goldfish, etc., effectively, by specifying a weight ratio of alpha-carotene and beta-carotene and a weight ratio of trans-form and cis-form of carotene. CONSTITUTION:A feed is blended with carotene (preferably palm carotene concentrated from palm oil) having a weight ratio of alpha-carotene and beta-carotene of 25-45:75-55 and a weight ratio of transform and cis-form of 60-80:40-20 to give the aimed feed. |
