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Observations on the mineral metabolism of pullets. VII. The calcium requirement of the laying bird

Published online by Cambridge University Press:  27 March 2009

R. H. Common
R. H. Common
Affiliation:
Ministry of Agriculture for Northern Ireland and the Queen's University of Belfast
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Extract

1. Evidence is presented in support of the view that the average daily retention of calcium from the food by the laying fowl is of the order of 50% of the intake for average daily intakes of about 1–3·5 g. calcium.

2. It is suggested that the optimal calcium requirement of the laying fowl for sustained heavy production lies in the region of 4 g. calcium daily, and that of the standards proposed by Mitchell & McClure (1937) that based on a 50% utilization is more nearly in accord with the results of metabolism experiments.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 33 , Issue 4 , October 1943 , pp. 213 - 220
Copyright
Copyright © Cambridge University Press 1943

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References

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