The present invention relates to a non-antibiotic feed additive for animals to enhance their growth efficiency wherein said feed additive comprises i combination of organic acids, at least one acid absorbent and at least one carrier. The present invention also relates to further uses of the feed additive and to processes for manufacturing the feed additive.本發明係有關一種用於動物來增進其生長效率之非抗生素飼料添加劑,其中該飼料添加劑包含有機酸類、至少一種酸吸收劑,和至少一種載劑之組合。本發明進一步係關於飼料添加劑的使用以及飼料添加劑之製造方法。