The application discloses a
sucrose complex
zinc-iron-
copper-
manganese composite premix
feed additive and a preparation method thereof, and belongs to the technical field of feed additives. The product is prepared by using
sucrose as an organic ligand, and then performing step-by-step complexing reaction on
zinc, iron,
copper and
manganese to form active complex components, and then mixing the active complex components with a carrier and / or an auxiliary material for feed additives to form the composite premix
feed additive. A 1 wt%
aqueous solution of the product is clear or substantially clear, and the proportion of
ferrous iron in total iron is not less than 0.75. The preparation method is performed in the order of preferential addition of
ferrous salt and last addition of
copper salt, and an
antioxidant is used to inhibit oxidation of
ferrous iron, and the pH of the
system is monitored and controlled in real time. The raw materials of the application have a wide source and low cost, and are suitable for comprehensive utilization of molasses resources in sugarcane production areas. The product has good stability and is not easy to absorb
moisture and form lumps, and can be directly applied to feed production to provide various organic state
trace element nutrients for
livestock and poultry.