Patent ID: 8377482

Claim:
A method of preparing an injectable trace element solution comprising manganese, selenium, and at least one metal selected from the group consisting of copper, zinc and chromium, said method comprising: (a) preparing a MnCO 3 mixture in a container by mixing MnSO 4 and NaCO 3 and adding hot water having a temperature of at least 70 degrees Celsius to provide a MnCO 3 mixture at a temperature of at least 60 degrees Celsius; (b1) adding to the container an EDTA solution selected from the group consisting of potassium EDTA solution and sodium EDTA solution and (b2) subsequently adding at least one metal compound selected from the group consisting of ZnO, CuCO 3 , MnSO 4 and FeCl 3 ; (c) adding Na 2 SeO 3 to the container to obtain the trace element solution; (d) adjusting the pH of the trace element solution to 6.7 to 7.0; and (e) adding at least one component selected from the group consisting of a vitamin, a growth stimulant, a dewormer, iron dextran and an antibiotic; (f) wherein the combined concentration of said manganese, selenium, and at least one metal selected from the group consisting of copper, zinc and chromium is greater than 60 mg/ml.