Three same-age healthy Giraffa camelopardalis were selected for four digestible tests with the addition of an exotic compound, Huafen Enzymes-1600 in their diets.

• 在长颈鹿日粮中添加精料量的 0 0‰、 0 8‰、 1 0‰、 1 2‰剂量华芬酶 - 16 0 0 ,采用分期试验法对 3只成年健康长颈鹿进行 4期消化试验。