If, for dietary or ethical reasons, you have decided that you want to put your infant on a vegetarian diet, you should be very careful in choosing formulas and solid food for your child.
If you plan to breastfeed the infant and you are also a vegetarian, you may need to supplement breastmilk with additional sources of nutrition, depending on your dietary restrictions. If you are a vegan, or an ovo-vegetarian, you should add sources of vitamin B-12 to your childs diet.
Other than the B-12 supplements, your infant should be able to receive all micro and macronutrients through breastfeeding, even if you are on a strictly vegan diet.
If you plan to use formula rather than breastmilk, you should stick to commercial formulas, which contain the proper amounts and ratios of nutrients. If you opt for a homemade formula or soymilk over a commercial product, your child could experience developmental problems from a lack of proper nutrition.
If you want to keep your infant on a vegan diet, you can select a soy commercial formula, as long as it is nutritionally-adequate.
After about a year, you can begin to supplement formula or breastmilk with other...