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Vitamin A Activity of ß-Apo-Carotenals in Coturnix Coturnix Japonica^1,2,

Department of Biochemistry, Kansas State University, Manhattan, Kansas

A study was made to determine the vitamin A activity of ß-apocarotenals for Coturnix coturnix japonica (Japanese quail). ß-Apo-8'-carotenal, ß-apo-10'-carotenal and ß-apo-12'-carotenal prepared from ß-carotene and synthetic ß-apo-8'-carotenal and ß-apo-12'-carotenal were used. Growth, viability, egg production, fertility, hatchability of eggs, and viability and growth of progeny demonstrate that these ß-apo-carotenals are vitamin A-active compounds. When the ß-apo-carotenals were fed, substantial quantities of vitamin A were found in blood serum, liver and egg yolk, which are further evidence of the vitamin activity of ß-apo-carotenals. Vitamin A content of blood serum and liver of male quail was higher than that of females. The data indicate that these ß-apo-carotenals can be used as a sole source of vitamin A for Japanese quail.

² From a dissertation presented by the senior author in partial fulfillment of the requirements for the Ph.D. degree in Animal Nutrition (University Microfilms, Inc., Ann Arbor, Michigan, no. 67-09132).

³ Present address: Department of Agricultural Chemistry, University of Missouri, Columbia, Missouri 65202.

Manuscript received 8 August 1967.