Improved Gut Health Outcomes Associated With Probiotics Fortified With Hydrolyzed Whey Protein in Infant Formula

Participants in this arm will receive stage 1 and stage 2 Feihe investigational formulas. At the first (up to) 6 months, they will be fed with stage1 formula, and then switch to stage 2 formula until 12 months.

Participants in this arm will receive stage 1 and stage 2 Control formulas. At the first (up to) 6 months, they will be fed with stage1 formula, and then switch to stage 2 formula until 12 months.

Exclusively breastfed for the first 4 months and continue with supplement food without any marketed infant formula.