5. 以下哪一項不是預測芻料品質的化學分析項目?(A)中洗纖維(Neutral detergent fiber, NDF)(B)酸洗纖維(Acid detergent fiber, ADF)(C)揮發性脂肪酸(Volatile fatty acids, VFA)(D)乾物質消化率(Dry matter digestibility, DMD )