Infants should not be given cows milks till they reach one year of age. This is because only when children are breastfed during their early stages do they develop an immune system and other overall bodily processes. Till your infant reaches the particular age, you can feed you infant a formula that has a well compiled quantity of nutrients and minerals. Infants who are introduced to cow's milk soon tend to develop an allergy towards the same, so ensure that you consult the Doc before tweaking around with the baby's diet. Infants who consume cow's milk very soon may also develop rashes and suffer from cold, coughs and wheezing.