The changes come as global consumer goods groups such as Nestlé, Unilever and Procter & Gamble are under intense investor pressure to boost profit margins as sales slow from consumers migrating to smaller, independent brands. Infant nutrition is a key battleground for Nestlé and its rivals Danone and Reckitt Benckiser, which bought Enfamil infant formula maker Mead Johnson. Big established brands still retain consumer trust that they have lost in other areas of packaged food, particularly in China, a major focus for future growth d...