Anti-Caking Agent - Feed Ingredient

Anti-caking agents are additives used in feed formulations to inhibit the formation of clumps and improve the flow of dry or semi-dry ingredients. These blends typically contain inert, highly adsorptive or water-scavenging compounds such as silicon dioxide (colloidal silica or precipitated silica), calcium silicate, tricalcium phosphate, sodium aluminosilicate (zeolite), talc, bentonite, and sometimes powdered cellulose or rice hull ash. The exact composition is chosen according to the hygroscopicity of the feed, processing conditions, regulatory limits, and the desired bulk-handling characteristics of the final product.

In equine nutrition, anti-caking blends are used to keep mineral premixes, vitamin blends, and complete pelleted or textured feeds from bridging in bins, sticking to augers, or stratifying during transport and storage. By binding surface moisture, these agents ensure that active ingredients remain evenly dispersed, so each scoop the horse receives is nutritionally consistent. They also help maintain shelf life and production efficiency by allowing higher inclusion rates of liquids such as molasses or oil.

Because most anti-caking compounds are chemically inert and fed at very low inclusion rates (typically 0.1 – 1% of the mix), they contribute negligible nutritional value.