Ajinomoto Co., Ltd.

Minoru Shimoda

Ei-ichi Kokue

Feeding fattening pigs a feed additive which contains as an active ingredient active folic acid (in the form of leucovorin, H.sub.2 -folic acid, a liver powder, disrupted cells of a microorganism or a cell extract of a microorganism), or a feed for fattening pigs and lactating sows which contains such an additive, either directly orally or via breast milk, is effective for increasing the amount of a reduced form of folic acid in the plasma of the fattening pigs and improving the efficiency of fattening.

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Tokyo, Japan

Minoru Shimoda