Melamine lawless elements will be added to the raw milk, the drill is the Kjeldahl method of loopholes in the milk protein content.

不法分子将三聚氰胺添加到原料奶中，钻的是凯氏定氮法测定奶粉蛋白质含量的漏洞。

youdao

One reason this may be so frequently found is because cows have been selectively bred this way to increase the protein content of the cow-milk (a quality desired by dairy producers). 9

其原因之一可能因为牛是通过选择性繁殖的方式来提高牛奶的蛋白质含量（乳品生产者所期望的品质）的。

youdao

Even after normal births the mother \ \ \ 's milk continued to change in protein content etc. to suit the needs of the baby as it grew.

为了更好地满足婴儿成长的需要，甚至在生产之后母乳也会继续改变其蛋白质含量等其他方面。

youdao

Their milk boasts a higher fat and protein content which can be used for cheese, skimmed milk powder and other high-fat products.

BBC: Cows