[The effect of long term bentonite administration on mixed element metabolism in dwarf goats]

Pigmy goats were experimentally examined for the effects of subchronic oral applications of high doses of GDR-made bentonite on their mass element status (calcium, phosphorus, magnesium sodium, potassium). The argillaceous mineral caused slightly reduced incorporation of calcium in the bones. Bentonite-related reduction of alkaline phosphatase activity cannot be ruled out as a causative factor. Magnesium concentrations in blood serum and liver of bentonite-treated pigm goats were lower with significance than those recorded from controls. Phosphorus, sodium, and potassium metabolism was not substantively altered by bentonite application. A sodium substitution effect might possibly be achieved by admixture of bentonite to feed rations.