The name of cow milk carbohydrate is

The name of cow milk carbohydrate is Lactose.
Lactose, is a unique carbohydrate in most mammalian milks. It is a type of sugar in milk made up of two molecules, glucose and galactose. It's found in cow's milk as well as sheep's and goat's.
Cow's milk contains about 4.8% lactose (12 - 12.5 g lactose per cup), whereas human milk has 7% lactose. In addition to lactose, minor quantities of glucose, galactose, and oligosaccharides are present.