Abstract
THE dietary requirements of calcium for chickens 0–18 weeks of age has been stated by the U.S. National Research Council1 to be 1.0 per cent of the diet. In the United Kingdom commercial broiler rations contain at least 1.0 per cent but may contain up to 1.4 per cent. Davis2 has presented evidence taken mainly from laboratory animal experiments indicating that the utilization of dietary protein, fat minerals, and vitamins may be reduced appreciably when the dietary calcium-level exceeds 1.0 per cent. When there is a limited intake of these nutrients, the inclusion of a high level of calcium in the diet may result in a clinical deficiency of them.
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References
Nutrient Requirements for Poultry (U.S. National Academy of Sciences—National Research Council, 1954).
Davis, G. K., Fed. Proc., 18, 1119 (1959).
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SMITH, H., TAYLOR, J. Effect of Feeding Two Levels of Dietary Calcium on the Growth of Broiler Chickens. Nature 190, 1200 (1961). https://doi.org/10.1038/1901200a0
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DOI: https://doi.org/10.1038/1901200a0
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