Emulsifiers are amphiphilic substances capable of mixing lipids and water. In nonruminant animals, feeding emulsifiers has been shown to increase growth, feed efficiency, and nutrient absorption. In ruminants, emulsifiers have the potential to affect rumen fermentation making fatty acids more available for biohydrogenation and increasing their passage to the small intestine through association with the liquid phase. Research studies on using emulsifying agents as feed additives for dairy cows is very scarce.
A recent study conducted at the Ohio Agricultural Research and Development Dairy Center, The Ohio State University, evaluated the potential use of an emulsifier as a feed additive on ruminal fermentation and production performance in lactating dairy cows.