Water soluble glass articles, their manufacture, and their...

Details Water soluble glass articles, their manufacture, and their... Water soluble glass articles, their manufacture, and their...

A - Human Necessities

23

K

167/153, 99/31

A23K 1/175 (2006.01) A61K 9/00 (2006.01) A61K 9/02 (2006.01) A61K 33/00 (2006.01) C03C 3/16 (2006.01) C03C 4/00 (2006.01)

Patent

CA 1207177

ABSTRACT WATER SOLUBLE GLASS ARTICLES, THEIR MANUFACTURE, AND THEIR USE IN THE TREATMENT OF RUMINANT ANIMALS A water soluble glass article suitable for treating a diet deficiency in a ruminant animal. Animals are treated by lodging in the reticulo rumen an article containing a) P2O5 b) R2O where R is chosen from Na, K and Li c) at least one other glass forming or modifying material, usually CaO, MgO or Al2O3 d) at least one deficiency-rectifying element selected from Cu, Se, Co, Zn, I, Mn and Mg. In the composition the sum of P2O5 and R2O is not less than 56 mol%, and not more than 76 mol% if CuO and/or ZnO are present or not more than 92 mol% if CuO and/or ZnO are absent and one or more of CoO, SeO and I is present. If CuO and/or ZnO is present then the amount of each of P2O5 and R2O (preferably present in substantially equimolar amounts) does not exceed 45 mol%. The composition is such that when the article is present in the reticulo rumen the article has a release rate of not more than 25 mg per square centimetre of article surface area per day, so making possible articles which can be administered to the animal to release the required element or elements over periods up to one year or more.

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