Method of preventing parturient hypocalcemia in animals and compositions used therein
Method of preventing parturient hypocalcemia and milk fever (parturient paresis) in lactating animals comprising administering to the animal during the dry period a compound which reduces absorption of calcium from the drinking water and/or from the ration of said animal. The method is based on the powerful, natural calcium regulating mechanisms and is applicable under commercial farming conditions.
1. A method of reducing the risk of parturient hypocalcemia in an animal, comprising administering to the animal during at least part of the dry period an effective amount of a composition comprising, in a suitable form for peroral administration, at least one calcium-binding compound, wherein the compound(s) is provided in an amount effective to reduce the absorption of calcium from the drinking water and/or from the ration of said animal, and wherein the compound is encapsulated by a calcium-free membrane material, which is a polysaccharide.
2. The method according to claim 1 , wherein the compound is administered perorally.
3. The method according to claim 1 , wherein the calcium-binding compound is synthetic sodium aluminosilicate zeolite type A.
4. The method according to claim 1 , comprising administering to the animal during at least part of the dry period an effective amount of a compound which has a competitive effect on the absorption of calcium from the drinking water and/or from the ration of said animal.
5. The method according to claim 1 , wherein the compound is contained in a composition which is in the form of a premix, a liquid or a powder.
6. The method according to claim 5 , wherein the composition is added to the drinking water and/or to the ration of the dry animal.
7. The method according to claim 2 , wherein at least 10 g of the compound is administered to the animal daily.
8. The method according to claim 7 , wherein at least 50 g of the compound is administered daily.
9. The method according to claim 1 , wherein the compound is selected from the group consisting of oxalic acid, sodium oxalate, phytic acid, a phytate, a clay mineral, a zeolite, ethylenediaminetetraacetic acid (EDTA) and its sodium salts Na 2 EDTA and Na 4 EDTA, trisodium nitrilotriacetate monohydrate, trisodium nitriloacetate, pentasodium diethylenetriaminepentaacetate, trisodium N-hydroxyethyl-ethylenediaminetriacetate, citric acid, a citrate, a polyphosphate, a tripolyphosphate, an orthophosphate and a cellulose phosphate.
10. The method according to claim 1 , wherein the compound is a zeolite.
11. The method according to claim 1 , wherein the compound has a competitive effect on the absorption of calcium from drinking water and/or from the ration of the animal.
12. The method according to claim 1 , wherein the compound is in the form of granules, pellets, or tablets.
13. The method according to claim 1 , wherein the composition comprises at least one further ingredient.
14. The method according to claim 1 , where the composition is calcium-free and non-acidifying.
15. The method according to claim 1 , comprising two different compounds which reduce the absorption of calcium from the drinking water and/or from the ration of said animal.
16. The method according to claim 15 , wherein one compound is a zeolite, and the other compound is selected from the group consisting of oxalic acid, sodium oxalate, phytic acid, a phytate, a clay mineral, ethylenediaminetetraacetic acid (EDTA), and its sodium salts Na 2 EDTA and Na 4 EDTA, trisodium nitrilotriacetate monohydrate, trisodium nitriloacetate, pentasodium diethylenetriaminpentaacetate, trisodium N-hydroxyethyl-ethylenediaminetriacetate, citric acid, a citrate, a polyphosphate, a tripolyphosphate, an orthophosphate and a cellulose phosphate.
17. The method according to claim 1 , where said membrane material, at the body temperature of the lactating animal, is solid at a pH value above 4.0, and dissolves at pH below 4.0.