婴幼儿每日营养素的需要量与成人不同,婴儿的月龄越低营养素需要量相对越高。同时,婴儿体内营养素的储备量相对较少,适应能力也差,一旦某些营养素摄入量不足或消化功能紊乱,短时间内就会明显影响其发育进程。婴儿所需营养素之一的蛋白质,主要用于维持体内的新陈代谢、身体的生长及各种组织器官的成熟,因此,婴儿对蛋白质的需求不仅要求有相当高的量,而且对质的要求也很高。母乳可 The daily nutrient requirements of infants and young children is different from that of adults. The lower the age of infants, the higher the requirement of nutrients. At the same time, the infant’s reserves of nutrients in the body is relatively small, poor adaptability, once some of the nutrient intake is insufficient or digestive disorders, a short period of time will significantly affect its development. Proteins, one of the nutrients needed by babies, are mainly used to maintain the body’s metabolism, body growth and the maturation of various tissues and organs. Therefore, the demand for protein in infants not only requires a relatively high amount of protein but also high quality requirements . Breast milk can be