| 摘要 |
A method of preparing a trace element solution, the method consisting essentially of the steps of: (A) preparing a single solution comprising more than one EDTA complex having at least one sodium counter-ion in a single continuous process by suspending either disodium EDTA in water or suspending EDTA acid in water with sodium hydroxide, and adding a metal compound selected from the group consisting of metal oxides, metal hydroxides and metal carbonates tot eh EDTA solution to form the EDTA complex, and (B) adding sodium selenite to the solution of EDTA complexes to form the trace element solution in which the molar ratio of selenium to the metals in the EDTA complexes is from 1:4.8 to 1:19. Also disclosed is a method of providing trace elements to animals, such as livestock, which comprises preparing a solution as above and providing the solution to the animals. |
