Breast Milk, pros and cons
Breast milk composition:
There is a little bit of unabsorbed lactose in stools, that helps soften stools,
causes more nonpathogenic fecal flora, and aids absorption of minerals.
Storing Breast Milk:
3 hrs @ rm temp
3 days in fridge
3 mos in freezer
thaw in hot H2O not in fridge
Breast milk can be kept (a) at room temperature for 4 hours; (b) in the fridge for 3 days (ideal) to 8 days (acceptable); (c) in the freezer for 3 months (d) in deep freeze for 6 months (ideal) to 12 months (acceptable). If transporting breast milk in a ‘cooler’ with ice packs, use within 24 hours.
Infant formula can be kept at room temperature for 2 hours. If formula is partly used, finish the rest within one hour from the start of the feeding. Formula should not be refrozen. Prepare only as much as you will need. Formula prepared from powder can be stored in the fridge for up to 24 hours. Liquid formula (ready-to-feed or prepared from concentrate) can be stored in the fridge for up to 48 hours. Finish powdered formula within one month after opening the can; store the can of powder in a cool dry place, not in the refrigerator or freezer.
Breast milk vs Cow milk
There are differences in both the quantity and quality of protein
content in human and cow milk. The protein concentration of mature
human milk is 0.9 g/dL compared with 3.4 g/dL for cow milk and 1.5
g/dL for modified cow milk formulas that provide 20 kcal/oz. The
protein content of human milk is 70% whey and 30% casein; cow milk
contains 18% whey and 82% casein. The various modified cow milk
formulas have whey contents that vary from 18% to 100%. The
predominant whey protein of human milk is alpha lactalbumin and is
beta lactoglobulin in cow milk. The whey proteins of human milk
provide relatively greater amounts of lactoferrin, lysozyme, and
secretory immunoglobulin A than are contained in cow milk formulas.
The serum levels of methionine, phenylamine, threonine, and valine are
higher in infants fed whey-dominant modified cow milk formulas
compared with breastfed infants. There is no known adverse effect
associated with these differences.
The whey proteins, which are more plentiful in human milk, are
digested more easily and promote gastric emptying.
Hall RT, Carroll RE. Infant feeding. Pediatr Rev. 2000;21:191-199
Slusser W, Powers NG. Breastfeeding update l: immunology, nutrition,
and advocacy. Pediatr Rev. 1997;18:111-119