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Cholecalciferol (Vitamin D3) and its metabolites participate in the regulation of Ca and P metabolism in vertebrates. The intermediate (6,7-cis-precalciferol) is formed by a photoreaction at wave length of 250-310 nm from 7-dehydrocholecalciferol in skin tissues. Vitamin D3, 1,25(OH)2 D3 and other
Different research methods demonstrated the presence of variable quantities of Vitamin D as well as its metabolites in calcinogenic plants. Most of the experiments indicated that the active component most probably should be the metabolite 1,25 (OH)2D3 linked as a glycoside. By this research it was
This paper describes incubation effects of rumen fluid on aqueous extracts of Trisetum flavescens, Solanum malacoxylon, Nierembergia veitchii, and Cestrum laevigatum. Investigation was performed by the rachitic chicken test, parameters determined were the serum levels of Ca, P, and alkaline