The availability of the calcium and phosphorus of plant materials for animals

Availability of minerals in foods of plant origin 105 apparent availability of the dietary Mg.This result was confirmed in the intact sheep by Care & Ross (1963) using deoxycorticosterone acetate instead of aldosterone.Since in most circumstances the diet provides excessive amounts of Mg, it seems likely that the endocrine factors function to reduce the availability of dietary Mg rather than to increase it.Notwithstanding the recent acceleration in research devoted to Mg homoeostasis, as a result of the introduction of accurate and sensitive methods for the determination of Mg in biological material, much still remains to be known of these factors which regulate its absorption from the digestive tract. The availability of the calcium and phosphorus of plant materials for animals