Biological availability of 54 aliphatic acids was compared by mini-test with chicks. Availability of saturated fatty acids with carbon chain between 6 to 12 and of lactic, pyruvic, succinic, l-malic, fumaric and citric acid was satisfactory. Availability of fatty acids with carbon chain shorter than 6 and longer than 12, fatty acids with side-chain, except those of iso-type and unsaturated fatty acids was low. Availability of glycolic, dl-glyceric, dl-malic, and maleic acid, and saturated dicarboxylic acids except succinic acid was also low. Digestibility of saturated fatty acids with carbon chain length longer than 8 decreased inversely with the increase of carbon chain length.
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Yoshida et al. (1970) studied this question.