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A phosphorus metabolism model for sheep fed various levels of calcium

Published online by Cambridge University Press:  20 November 2017

D. M. S. S. Vitti ,
E. Kebreab* ,
J. B. Lopes ,
A. L. Abdalla ,
L. M. Salviano ,
L. A. Crompton  and
J. France
D. M. S. S. Vitti
Affiliation:
Animal Nutrition Laboratory, Center of Nuclear Energy in Agriculture, PO Box 96, CEP 13400-970, SP, Brazil
E. Kebreab**
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, P.O.Box 236, Reading RG6 6AT, UK
J. B. Lopes
Affiliation:
University of Piaui, Teresina, Brazil
A. L. Abdalla
Affiliation:
Animal Nutrition Laboratory, Center of Nuclear Energy in Agriculture, PO Box 96, CEP 13400-970, SP, Brazil
L. M. Salviano
Affiliation:
Embrapa, Petrolina, CE, Brazil
L. A. Crompton
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, P.O.Box 236, Reading RG6 6AT, UK
J. France
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, P.O.Box 236, Reading RG6 6AT, UK
*
E-mail: dovitti@cena.usp.br
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Extract

In tropical countries, especially in Brazil, ruminants commonly are fed forage diets which are adequate in calcium but deficient in phosphorus, giving an inadequate Ca: P ratio. Thus, it is important to understand the effects of Ca level on phosphorus homeostasis control and to obtain more information on phosphorus utilization. The objective of this study is to provide information which may be useful to improve the understanding of the P homeostasis control in sheep fed various Ca levels, and to obtain more information on dietary Ca level effect on P utilization.

Type
Sheep Nutrition
Information
Proceedings of the British Society of Animal Science , Volume 2003 , 2003 , pp. 196
Copyright
Copyright © The British Society of Animal Science 2003

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References

Challa, J.; Braithwaite, G. D. 1989. Phosphorus and calcium metabolism in growing calves with special emphasis on phosphorus homeostasis. 4. Studies on milk-fed calves given different amounts of dietary phosphorus but a constant intake of calcium. Journal of Agricultural Science 113: 285–289.Google Scholar
SAS, 1991. Applications Guide 1, 1a ed., NC: SAS Institute Inc. Google Scholar