Bactrian camel milk is rich in nutrition and has certain healthy functions and remedy effects, however, its composition lacks systematic determination and evaluation. A total of 155 Bactriancamel milk samples were collected from Evenk Banner of Hulun Buir, Alxa Left Banner, and Wuhai in Inner Mongolia,and 101 Holstein milk and 34 Sannon goat milk were collected for comparative studies. Four nutrient groups, such as routine nutrients, fatty acids, amino acids, and minerals were determined by national standard methods, descriptive statistics, and principal component analysis. As result, each nutrientgroup could cluster the three kinds of milk samples by species in the three-dimensional space, meaningthat all nutrients of milk had species peculiarity and implying that it was feasible to discriminate species authenticity of milk by the nutrient group. The contents of protein, fat, lactose, moisture, and ash ofBactriancamel milk were (3.60±0.98), (4.90±1.74), (4.98±0.64), (85.55±2.66),and (0.85±0.10) g/100g respectively. The contents of fat, lactose, and ashof Bactrian camel milk were significantly higher than those of Sannon goat and Holstein milk (P<0.05). C15∶0, C16∶1, C18∶0 and C18∶3n3 of Bactriancamel milk were significantly higher than those of Sannon goat and Holstein milk (P<0.05). The contents of essential amino acids Met and Ile, and non-essential amino acids Asp, Pro, Tyr, and Arg in Bactrian camel milk were significantly higher than those in Holstein and Sannon goat milk (P<0.05). The contents of Ca, Zn, and I of Bactrian camel milk were significantly higher than those of Holstein milk (P<0.05). The study obtained highlyreferable statistical parameters of the composition of Bactriancamel milk.
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