The invention discloses a trace element solution, which comprises at least the following metals: zinc； manganese； and selenium； copper； and which comprises a concentration of the metals of at least 90 mg/ml. The solution may comprise the following concentrations: at least 60 mg/ml zinc； at least 10 mg/ml manganese； and at least 5 mg/ml selenium. The solution may comprise chromium, iodine, copper and chromium.
