QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Purchase Article View Shopping Cart Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Schryver, H. F. Articles by Craig, P. H. Search for Related Content PubMed PubMed Citation Articles by Schryver, H. F. Articles by Craig, P. H.

Calcium Metabolism in Ponies Fed a High Phosphorus Diet¹

Equine Research Program and Department of Physical Biology, New York State Veterinary College and New York State College of Agriculture, Cornell University, Ithaca, New York 14850

Calcium metabolism was studied by combined metabolic balance and kinetic methods in four young Shetland ponies fed a diet containing 0.4% calcium and either 0.2% or 1.2% phosphorus in a replicated 2 x 2 Latin square experimental design. Phosphorus retention and plasma phosphorus concentration were greater when the ponies were fed the high phosphate diet. The high phosphate intake decreased calcium absorption, urinary excretion and retention but increased total and endogenous fecal calcium excretion. However, the ponies were in positive calcium balance when fed either the basal or high phosphate diet. The turnover of bone, estimated from the rates of deposition of calcium in the skeleton and removal of calcium from the skeleton, increased in three of the four ponies in response to the high phosphate diet. Plasma calcium concentration decreased when the ponies were fed the high phosphate diet. However, the more rapid turnover of bone calcium observed was not associated with consistent changes in the exchangeable calcium pool, the compartments of the pool or the rates of exchange.

² Equine Research Program.

³ Department of Physical Biology.

Manuscript received 13 August 1970.

This article has been cited by other articles:

				M. Clauss, J. C. Castell, E. Kienzle, P. Schramel, E. S. Dierenfeld, E. J. Flach, O. Behlert, J.-M. Hatt, W. J. Streich, and J. Hummel Macromineral Absorption in the Black Rhinoceros (Diceros bicornis) Compared with the Domestic Horse J. Nutr., July 1, 2006; 136(7): 2017S - 2020S. [Full Text] [PDF]