Cow and goat milk alone are insufficient sources of essential B vitamins, choline, taurine, biotin, riboflavin, and vitamin A for babies because cows and goats do not eat meat.

“we know that these cow and goat's milk alone are not sufficient sources of many b vitamins they don't have enough choline or taurine or biotin or riboflavin and or vitamin a necessarily in the form that you want and these are all because the cows are not eating meat”