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Introductory Remarks for the Symposium on Evaluating Mineral Concentrations in Animal Tissues¹

University of Kentucky, Lexington 40506

Abstract

Our knowledge of the significance of mineral elements in the metabolic processes of animals is increasing rapidly. At the present time, additional elements are being identified as essential, their metabolic functions are being elucidated, and the functions and interrelationships of all nutrients are becoming more clearly established. It is not likely that the list of essential elements is complete and, in fact, there is good evidence that clarification of the essentiality of certain questionable ones will soon be forthcoming. It is highly unlikely that only 10 to 12 of the many" elements that are widely distributed in living tissue are essential. It is more reasonable to assume that the list of essential minerals will be expanded as our research techniques improve and as our diligent search continues. This symposium will deal with some of the complications that confront us in the field of trace mineral nutrition.

Most of the mineral elements have multiple functions in metabolism and their metabolic activity is affected by or related to other minerals, vitamins or hormones.

¹ Presented at 67th Annual Meeting of the American Society of Animal Science, University of Colorado, Ft. Collins, July 28, 1975, as part of a Symposium on Evaluating Mineral Concentrations in Animal Tissues. Sponsored by the Regulartory Agency Committee, A.S.A.S. with financial assistance under Contract No. 223-75-7014 from the Public Health Service, Food and Drug Administration, Department of Health, Education, and Welfare.