Abstract: Milk is a specialized substance secreted by the mammalian mammary gland and is the material basis for the survival and development of mammals. Understanding the similarities and differences in the milk composition of humans and domesticated mammals and gaining deeper insights into the characteristics of different mammalian milks will help in the targeted development and promotion of different mammalian dairy products. In this review, we summarize the main nutritional components in different mammalian milks and compare the composition and content of protein, fat and lactose, finding that there are large differences in these milk components. Besides, we review the functions and applications of different mammalian dairy products according to the conclusions drawn from the comparison.

Key words: milks of different mammals, nutritional composition, comparison, development of non-bovine milks

摘要： 乳是由哺乳动物乳腺分泌的特有物质，是哺乳动物生存和发育的物质基础。比较不同哺乳动物乳成分，可以了解各成分之间的相似性和差异性，更好地掌握不同哺乳动物乳的特点，从而针对性地开发和推广不同哺乳动物乳制品。本文总结不同哺乳动物乳中的主要营养成分，对蛋白质、脂肪、乳糖的组成和含量进行比较，发现不同哺乳动物乳成分之间存在较大差异，并根据比较得出的结论总结不同哺乳动物乳制品的功能与应用。

关键词: 不同哺乳动物乳, 营养成分, 差异比较, 特种乳开发