Adding enzyme to the feed can help animal to digest nutrient of the feed and increase efficiency of the feed and promote animal to grow up.

饲料中添加酶可帮助动物对饲料养分的消化吸收，大幅提高饲料效率，促进动物生长。

youdao

Adding the enzyme to corn stalks, the researchers say, could allow easier conversion of the woody waste parts of the corn plant into ethanol.

NPR: Scientists Seek New Ways to Produce Biofuel

Scientists were able to control the enzyme by adding to it naturally occurring compounds, including one known as phenylalanine.

BBC: Enzyme switch may help 'slow cancer tumour growth'