Vitamin A (Retinol and Vitamin A Acetate)

Vitamin A is a fat-soluble vitamin essential for vision, immune function, and the maintenance of epithelial tissues. It exists in several forms, including retinol, retinyl esters, and provitamin carotenoids.
In feed and premix applications, vitamin A is most commonly supplied as vitamin A acetate, a stabilised ester form that improves handling, storage, and inclusion accuracy.

Vitamin A plays a central role in:
‣ Vision, particularly under low-light conditions
‣ Immune system function
‣ Growth and development
‣ Maintenance of epithelial integrity
In animal nutrition, inadequate vitamin A levels can lead to reduced growth, impaired immune response, and poor overall performance.

Vitamin A acetate is the preferred form used in feed formulations because free retinol is highly unstable. The acetate form improves stability and allows for more consistent dosing in premixes and finished feeds.
Despite this, vitamin A remains sensitive to environmental conditions, particularly oxidation, heat, and light. Losses can occur during processing, especially during pelleting and storage, meaning the final concentration may differ from the intended inclusion level.

Because of its instability and low inclusion levels, accurate measurement of vitamin A acetate is essential.
Analysis is used to:
‣ Verify inclusion levels in feed and premixes
‣ Monitor degradation during processing
‣ Ensure consistency between batches
‣ Confirm compliance with nutritional specifications