Organic AA complexes improve vitamin stability in premixes

Researchers at the University of Minnesota studied the effect of metal specific amino acid complexes and inorganic trace minerals on vitamin stability in premixes. Stability of vitamin activity in a swine premix containing metal specific amino acid complexes, inorganic trace minerals, or no trace minerals was evaluated over a 120-day storage period. Two vitamin-trace mineral premixes containing either metal specific amino acid complexes or inorganic trace mineral sources were formulated to contain 200 percent of NRC (1988) sow requirements for I, Cu, Zn, Mn, Fe, and Se based on a 5g/kg dietary inclusion rate.

The vitamin premix and the two vitamin-trace mineral premixes were formulated to contain the same level of vitamins. Vitamin levels exceeded NRC (1988) and were chosen to represent “typical” industry levels based on an informal survey of vitamin levels in commercial premixes in the USA.
Premixes were stored in an environmentally controlled feed storage room and samples were collected every month to determine vitamin activity. Read more...

This blog is written by Martin Little The Global Miller, published and supported by the GFMT Magazine from Perendale Publishers.