Trace element solution

1. A trace element solution, which comprises at least the following metals:

(a) at least 65 mg/ml zinc directly and/or indirectly from Zn-EDTA and/or Zn oxide;

(b) at least 10 mg/ml manganese directly and/or indirectly from Mn-EDTA and/or manganese carbonate;

(c) at least 15 mg/ml copper directly and/or indirectly from Cu-EDTA and/or copper oxide and/or copper sulphate, and/or copper carbonate; and

(d) at least 5 mg/ml selenium derived directly and/or indirectly from Na 2 SeO 4 and/or Na 2 SeO 3 ;

wherein:

(a) the ratio of zinc to manganese is at least 6.5:1;

(b) the ratio of zinc to copper is at least 4:1; and

(c) the ratio of zinc to selenium is at least 13:1; and

wherein the the metals are present in a solution of water, chlorocresol and/or benzyl alcohol, at a concentration of metals of at least 95 mg/ml;

with the pH of the trace element solution adjusted by means of 30% NaOH in an injectable trace element solution that is visually stable.

2. A trace element solution as claimed in claim 1 , which additionally comprises iodine.

3. A trace element solution as claimed in claim 2 , which comprises 50 mg/ml iodine.

4. A trace element solution as claimed in claim 2 , in which the iodine is derived from potassium iodide.