Apparently Westhusin is grossly unaware of the immune factors and other "nutraceuticals" that already exist naturally in the milk of mammals. Just like human breast milk, goat milk contains beneficial lipids, fatty acids, immune factors, fats, proteins, and other vital nutrients that naturally impart immunity to offspring. Natural, raw mammal milk, in other words, is already a perfect type of "vaccine," if you will, for the immune system of mammalian offspring.
But leave it to the educated ignoramuses in mainstream science to tamper with a good thing in the name of promoting public health. In the warped mind of Westhusin and his colleagues, injecting vaccines, pharmaceuticals, and other synthetic substances into the milk of living creatures through their genes will help "save the Third World." But to the rest of the sane world, the A&M team's ill-guided science experiment is unnecessary, and is sure to result in catastrophic -- and potentially irreversible -- consequences.