In this study, the milk components SCC,NAGase, peroxidase, catalase, lipase, and FFA were analysed and compared 434 milk samples from 30 Holstein cows.

• 对某牧场30头荷斯坦奶牛的434个奶样进行体细胞数、NAG酶、过氧化物酶、过氧化氢酶、脂酶、游离脂肪酸含量的测定。