Vitamins limiting for growth of subjects fed a normal diet under hyperbaric He-O2 conditions
Zogg, C.A.; Brumleve, S.J.; DeBoer, B.; Akers, T.K.
Aviation Space and Environmental Medicine 49(1 Pt 1): 47-52
1978
ISSN/ISBN: 0095-6562 PMID: 623563 Document Number: 126683
Growth was studied of rats continuously exposed for 4 weeks to ambient air, 1 atmosphere absolute (ATA) He-O2, or 11 ATA He-O2 and fed on one of 16 diets. The diets were the standard diet alone (adequate according to National Research Council standards: NAR 43, 4178), the standard diet with additional casein 50%, fat 25% and all vitamins 25%, or the standard diet with all vitamins 25%, or all vitamins increased 25% except one which was supplied at the standard level. The standard diet was inadequate to support a normal rate of growth when given in 11 ATA He-O2 conditions. Supplementary casein, fat and vitamins or all vitamins alone adequately provided nutrients necessary for a normal rate of growth by hyperbaric exposed rats. The standard levels of thiamin, pantothenic acid, biotin and vitamin K were inadequate and the standard levels of niacin and vitamins A, D and E were marginal in supporting growth of rats in hyperbaric conditions.