They aren't quite there yet. But they are working on it and may be close.
Chinese Scientists Clone Cows With “Humanized” Milk | Singularity Hub
This very moment, grazing in the fields of the State Key Laboratory of Agrobiotechnology in Beijing, China is a particular heard of about 300 cows. Each one is a clone, and each one produces milk that contains proteins normally found in human milk. The cows are part of a vision belonging to Ning Li, SKYLAB’s director, to put “human-like milk” onto supermarket shelves–and into baby bottles–all over the world.
As published in the Public Library of Science One, the cows were cloned by somatic cell nuclear transfer–the same method Ian Wilmut used to clone Dolly–in which the nucleus of a somatic (body) cell is transferred into an egg that has had its nucleus removed. Prior to inserting the somatic nucleus into the enucleated egg, Dr. Li’s group infected it with a virus carrying the human gene for lysozyme. Lysozyme is an enzyme found in large quantities in human breast milk that can lyse–or split open–the cell walls of harmful bacteria in the gut. In addition to its antibacterial effects, lysozyme works to boost the body’s immune response to infection. The immunological benefits imparted by lysozyme is an important reason why breast milk is so healthy for developing babies. It’s absent in most of the baby formulas commonly-used to supplement or substitute breast milk.