Vitamin Requirement
Mostrando 13-24 de 78 artigos, teses e dissertações.
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13. Dietetic vitamin a requirements of nile tilapia oreochromis niloticus. / Exigência nutricional de vitamina A para alevinos de tilápia do nilo Oreochromis niloticus.
O excesso de vitaminas lipossolúveis na dieta pode ser acumulado no fígado e causar hipervitaminose em animais. Os objetivos deste trabalho foram determinar a exigência nutricional em vitamina A para juvenis da tilápia do Nilo Oreochromis niloticus, avaliar o desempenho da espécie através do ganho de peso e conversão alimentar e quantificar os depósi
Publicado em: 2003
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14. Suplementação dietética de vitamina C, desenvolvimento e sanidade do pacu (Piaractus mesopotamicus Holmberg, 1887). / Dietary vitamin c supplementation, growth and health of pacu (Piaractus mesopotamicus Holmberg, 1887).
O pacu, Piaractus mesopotamicus Holmberg, 1887 (Characiformes, Characidae), é uma das principais espécies da fauna aquática brasileira, com grande potencial para aqüicultura interior. Estudos sobre nutrição e determinação de exigências nutricionais são ferramentas para embasar a formulação de dietas completas e consolidar a piscicultura intensiva
Publicado em: 2003
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15. Succinate as a Growth Factor for Bacteroides melaninogenicus
Rumen strains of the obligate anaerobe Bacteroides melaninogenicus normally require medium supplemented with both heme and vitamin K. Sodium succinate was found to be an additional growth factor in that this compound can replace the requirement for heme in the presence of vitamin K, allowing good growth of the organism, and succinate can also partially repla
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16. Vitamin Requirements of Several Cellulolytic Rumen Bacteria1
Scott, H. W. (Ohio Agricultural Experiment Station, Wooster), and B. A. Dehority. Vitamin requirements of several cellulolytic rumen bacteria. J. Bacteriol. 89:1169–1175. 1965.—Four strains of cellulolytic bacteria recently isolated from in vitro rumen fermentations were used in this study. Nine water-soluble vitamins were tested in single-deletion and s
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17. Alternate Requirement for Vitamin B12 or Methionine in Mutants of Pseudomonas denitrificans, a Vitamin B12-producing Bacterium
Experiments are described which indicate that Pseudomonas denitrificans, an organism that overproduces vitamin B12, uses the B12 pathway exclusively for methionine synthesis.
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18. THE VITAMIN C REQUIREMENT OF MAN. ESTIMATED AFTER PROLONGED STUDIES OF THE PLASMA CONCENTRATION AND DAILY EXCRETION OF VITAMIN C IN 3 ADULTS ON CONTROLLED DIETS1
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19. SPECIFICITY OF THE VITAMIN B12 REQUIREMENT IN CERTAIN MARINE BACTERIA1
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20. In vivo occupancy of the vitamin D responsive element in the osteocalcin gene supports vitamin D-dependent transcriptional upregulation in intact cells.
The steroid hormone vitamin D is a principal mediator of skeletal homeostasis. 1,25-Dihydroxyvitamin D3 treatment of ROS 17/2.8 osteoblast-like cells results in a ligand-dependent increase in transcription of the bone-specific osteocalcin gene. This transcriptional upregulation requires the positive cis-acting vitamin D responsive element (VDRE). We have use
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21. The bluF gene of Rhodobacter capsulatus is involved in conversion of cobinamide to cobalamin (vitamin B12).
The bluF gene of Rhodobacter capsulatus is the first gene of the bluFEDCB operon which is involved in late steps of the cobalamin synthesis. To determine the function of the bluF gene product, a bluF::omega-Km mutant strain was constructed and characterized. This vitamin B12 auxotrophic mutant strain shows a 3.5-times higher vitamin B12 requirement under pho
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22. Evidence for a recommended dietary allowance for vitamin C from pharmacokinetics: A comment and analysis
The current recommended dietary allowance (RDA) for vitamin C, as proposed by the Food and Nutrition Board/National Research Council in 1980 and reconfirmed in 1989, is 60 mg daily for nonsmoking adult males. Levine et al. [Levine, M., Conry-Cantilena, C., Wang, Y., Welch, R. W., Washko, P. W., et al. (1996) Proc. Natl. Acad. Sci. USA 93, 3704–3709],
The National Academy of Sciences of the USA.
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23. Fifty Years of Experience in Nutrition and a Look to the Future: III. Early Studies of Vitamin D Requirement During Growth
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24. STUDIES OF THIAMINE METABOLISM IN MAN. I. THIAMINE BALANCE. THE NORMAL REQUIREMENT OF VITAMIN B1 AND THE RÔLE OF FECAL THIAMINE IN HUMAN NUTRITION 1