The invention relates to a preparation method of feeding
ferrous lactate, which comprises the steps of: crushing
starch substances, adding water and performing
slurry mixing, adding a liquefying
enzyme and a saccharifying
enzyme, performing enzymolysis liquefying and saccharifying, performing
solid-liquid separation to obtain a
sugar residue wet base and non-residue saccharifying liquid, inoculating
lactic acid producing strains into the non-residue saccharifying liquid, fed-batching
calcium hydroxide or
calcium carbonate, performing a
fermentation reaction, and performing
solid-liquid separation to obtain a strain acid residue wet base and
calcium lactate weak liquid; adding
ferrous sulfate or
ferric chloride into the calcium lactate weak liquid, enabling a reaction and performing
solid-liquid separation to obtain calcium
sulfate and
ferrous lactate weak liquid; concentrating the ferrous lactate weak liquid to obtain ferrous lactate concentrated liquid; mixing one or two of the
sugar residue wet base, the strain acid residue wet base and feed raw materials and one or two of
clean water, stone
powder, composite strain liquid and composite enzymes, and performing enzymolysis and
fermentation to obtain a
glycolysis feed wet base; and mixing and
drying the
glycolysis feed wet base and the ferrous lactate concentrated liquid to obtain the feeding ferrous lactate. The product provided by the invention is rich in ferrous lactate,
lactic acid and ferrous lactate, and has the characteristics of rapid absorption, good iron supply effect, high
palatability and the like.