反芻胃内繊毛虫類のアミノ酸および蛋白質代謝-1-アミノ酸の消費

概要

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The consumption of amino acids peculiar to rumen ciliate protozoa has been investigated by means of VAN SLYKE manometric method.Following results were obtained:1. The consumption of amino acids by bacteria contaminated into protozoal suspension was inhibited by 50μg/ml of penicilline, streptomycine and chloramphenicol. Of these antibiotics streptomycine did not affect amino acid consumption of protozoa.2. Alpha-amino nitrogen in the medium increased during incubation of rumen ciliate protozoa.3. In order to keep out the effect mentioned in 2 above, amino acid consumption by rumen protozoa was calculated by subtracting the value incubating with amino acid from the value without amino acid. And it is concluded that relatively large amounts of glutamic acid, tryptophan, lysine and histidine are consumed, but aspartic acid, valine, alanine, arginine and phenylalanine are not consumed at all.4. The consumption of amino acids by the mixture of protozoa and bacteria was lower than that by each microorganisms.
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