A feed premix is a concentrated, uniform blend of micro-ingredients that is added to compound feed in a small, fixed amount. The micro-ingredients are typically vitamins, trace minerals and, depending on the product, other additives. The premix itself is not fed on its own. It becomes part of the final feed at the mill.
Why premixes exist
Many nutrients are needed in very small quantities. A single trace element may be required at a few grams per tonne of feed, while a mill blends ingredients by the tonne. Weighing each micro-ingredient separately at that scale is slow and leaves room for error.
A premix solves this by diluting the micro-ingredients onto a carrier in advance. The feed mill then adds one product at a practical inclusion rate instead of handling many tiny additions.
What a premix usually contains
- Vitamins: fat-soluble (such as A, D and E) and water-soluble (such as the B vitamins).
- Trace minerals: elements needed in small amounts, supplied from defined mineral sources.
- Macro minerals: in some products, larger-volume minerals are included as well.
- Additives: depending on the formulation and local regulations, other feed additives can be carried in the premix.
- Carrier: an inert or nutritional base material that dilutes the active ingredients and helps them mix evenly.
The exact composition always depends on the species, the production phase and the rest of the diet.
Premix, concentrate and complete feed
These three terms are often confused. They differ mainly in how much of the final diet they make up.
| Product | Typical role in the diet | Who uses it |
|---|---|---|
| Premix | Small inclusion, micro-ingredients only | Feed mills, integrators |
| Concentrate | Larger share, adds protein and micro-ingredients to farm grains | Farms and smaller mills mixing their own grain |
| Complete feed | The whole diet, ready to feed | Livestock farms |
A premix is the most concentrated of the three. It assumes the user already has the energy and protein sources and only needs the micronutrient package.
Who uses premixes
- Feed manufacturers use premixes to keep micro-ingredient handling simple and consistent across production runs.
- Integrators that produce feed for their own poultry or ruminant operations use premixes in the same way.
- Distributors supply premixes to regional feed producers that do not formulate micro-ingredients themselves.
What makes a premix work well
Three practical factors decide whether a premix does its job at the mill.
Uniformity
Every part of the premix should contain the same proportion of each micro-ingredient. If it does not, the final feed will not either.
Stability
Some vitamins are sensitive to heat, moisture, light and contact with certain minerals. Formulation, packaging and storage all influence how well the premix keeps its declared values over its shelf life.
Fit with the diet
A premix is designed around a base diet. When raw materials change, the micronutrient requirements of the premix may need to change with them.
Choosing a premix
When you evaluate a premix, ask for the full composition, the recommended inclusion rate, the packaging and the storage conditions. A good supplier will also discuss your species, production stage and raw materials before proposing a formulation.
If you are comparing suppliers, our article on how to evaluate a premix supplier lists the questions worth asking.
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