Journal article

Quantitation of phosphorus excretion in sheep by compartmental analysis.

KM Schneider, RC Boston, DD Leaver

Am J Physiol | Published : 1987


The control of phosphorus excretion in sheep has been examined by constructing a kinetic model that contains a mechanistic set of connections between blood and gastrointestinal tract. The model was developed using experimental data from chaff-fed sheep and gives an accurate description of the absorption and excretion of phosphorus in feces and urine of the ruminating sheep. Simulation of the response to an intravenous phosphorus infusion by adding an inflow of 2 g/day of phosphorus into the compartment describing blood, predicted values for fecal output of phosphorus lower than found experimentally. However, by alteration of the parameters describing absorption or salivation, the predictions..

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University of Melbourne Researchers