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RESEARCH ARTICLE

Phosphorus metabolism in ruminants. 1. Techniques for phosphorus depletion

JH Ternouth, HMS Davies, JTB Milton, MW Simpson-Morgan and NE Sands

Australian Journal of Agricultural Research 36(4) 637 - 645
Published: 1985

Abstract

A dietary technique and a parotid saliva replacement technique for depleting ruminants of phosphorus are described. The unilateral parotid depletion technique, involving permanent re-entrant parotid duct catheterization, with phosphorus-free artificial saliva returned to the duct, rapidly depressed blood and ruminal inorganic phosphorus concentrations of animals fed on a low-phosphorus diet. The parotid technique is capable of removing the total extracellular fluid inorganic phosphorus of cattle, goats and sheep in 5-14 h and is of value for creating acute phosphorus deficiencies in adult ruminants. Removal of phosphorus from the ruminant is slower with the dietary technique.

https://doi.org/10.1071/AR9850637

© CSIRO 1985

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