The present invention relates to a bile salt adjuvant for animals for improving fat utilization efficiency in the bodies of the animals, and to animal feed comprising same. More particularly, the present invention relates to a bile salt adjuvant for animals comprising sodium stearoyl-2-lactylate. The adjuvant is used in animal feed to improve fat utilization efficiency in the bodies of livestock when ingested by said livestock, thereby reducing the amount of fat required to be used in animal feed and improving productivity.本發明涉及可提高脂肪的體內利用率的動物用膽鹽佐劑及利用該動物用膽鹽佐劑的動物用飼料,更為詳細說明是由硬脂醯-2-乳酸鈉構成的動物用膽鹽佐劑,上述佐劑用於動物飼料,從而在家畜攝取飼料時提高脂肪在體內的利用率,降低飼料內脂肪使用量來提高產率。
