Mothers will sometimes encourage their baby to feed longer at the breast to assure greater intake of hind milk, which is the fatty milk that comes at the end of a feeding. However, research indicates that there is no reason to worry about foremilk (which comes at the beginning) and hindmilk. If a baby breastfeeds effectively and feedings are not cut short, he will receive about the same amount of milk fat over the course of a day, despite the breastfeeding pattern. Therefore, there's no need to time feedings. Good milk transfer and steady growth are better indicators that a baby is getting just what he needs.
Sharen Medrano, Yummy Mummy Support Group IBCLC (www.nycbreastfeeding.com)