Selenium as micronutrient

Selenium as Micronutrient

Selenium deficiency diseases in horses were already described in the 19th century. Through the intensive farming methods still widely used today the nutrient depletion of soils and plants continues to progress. For example, the selenium content of hay today is often below the detection limit (<0.002 mg/kg dry matter). A selenium content below 0.025 mg/kg dry matter is very likely to lead to health problems.

Selenium has only a narrow therapeutic margin in horses. This means that the daily dose must be sufficient but not so high as to lead to overdose. As organic selenium compounds have been shown to be much better tolerated than inorganic ones, supplementation with organic selenium at moderate dosages which are nevertheless sufficient to cover the animal’s requirements makes sense.

orthosal® KOMBI contains only organically bound trace elements – including selenium – in appropriate dosages. If feeds containing very high concentrations of inorganic selenium are used the daily selenium uptake from the total ration should be checked. In selenium poor regions additional supplementation with selenium is advisable – at least for a limited period (see selenium supplementation, orthosal® Selen).

To the trace element zinc


Selenium is a trace element with a relatively narrow therapeutic width. This means that an excessively high self-administration can lead to symptoms of intoxication. Therefore, prescribed dosages must be strictly adhered to!

We recommend in case of selenium deficiency:
  1. navalis orthosal® Selen HORSE einen Mangelausgleich
    navalis orthosal® Selen HORSE
    €65.90 / 1 kg