J. Anim Sci.
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J. Anim Sci. 1978. 47:977-978.
© 1978 American Society of Animal Science
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Introductory Remarks for the Symposium on Establishing Nutrient (Minerals and Vitamins) Guidelines for Animal Diets1

David J. Thompson

International Minerals and Chemical Corporation, Mandelein, IL 60060

Abstract

Quantitation of nutrient requirements for animals is a complex area because of the variety of factors that influence requirements, the criteria for nutritive adequacy, and the variability within and among animal species. Continued changes in breeding, management, feedstuffs and methods of feed processing influence nutrient requirements. Hence, there is a continuing need for reevaluation.

The applicability of our existing nutrient requirement data must be reevaluated in relation to newer management systems and to the effects of stress on nutrient requirements. In conjunction with these factors, the variables that affect appetite and total feed intake need to be considered so that rations are devised to provide adequate nutrients in the amount of feed that animals may be expected to consume.

This symposium on Establishing Nutrient (Minerals and Vitamins) Guidelines for Animal Diets will deal not so much with the nutrient levels and how they are expressed, but rather with who determines or influences these nutrient levels and what regulations are applicable.

Footnotes

1 Presented at the 69th Annual Meeting of the American Society of Animal Science, University of Wisconsin, Madison, July 27, 1977, as part of a symposium on Establishing Nutrient (Minerals and Vitamins) Guidelines for Animal Diets. The symposium was sponsored by the Regulatory Agencies Committee, ASAS, with financial assistance under Contract No. 221-77-0117 from the Public Health Service, Food and Drug Administration Department of Health, Education, and Welfare






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Copyright © 1978 by the American Society of Animal Science.