Pam,
This gets tricky, because research indicates that as a baby gets older,
the intake doesn't increase by much. Breastfed babies take close to the
same amount at 6 months as they do at 1 month.
See the chart on p. 100 of the new Riordan book (p. 124 in the 1999
edition). It shows an average difference of only about 100 ml or 3 oz/day
between one month [800 ml] and six months [900 ml].)
This is *not* true of babies fed human milk substitutes, who at four
months are consuming on average 25% more per day than breastfed babies of
the same age. So the same "rules" definitely do not apply to breastfed as
artificially fed babies. (My guess is the calculation method you
mention--take the baby's weight and multiply it by 2.5 then divide by
number of feedings--is based on artificially fed babies, since increasing
weight doesn't seem to greatly affect intake in breastfed babies.)
This chart is based on the info in:
Neville MC et al. Studies in human lactation: milk volumes in lactating
womenduring hte onset of lactation and full lactation. Am J Clin Nutr
48:1375-86, 1988.
For something more current, see the chart in the Hartmann team's study of
the 24-hour milk-intake of 30 babies (ages 1-6 mos.):
Mitoulas, L. et al. Efficacy of breast milk expression using an electric
breast pump. J Hum Lact 2002; 18(4):346.
If looking at weight gain, average weight gain for the first 3-4 mos. is 6
oz. (170 g)/week, from 4-5 mos. this slows to an average of 4-5 oz.
(112-142 g)/week, and from 6-12 mos. to an average of 2-4 oz.
(57-113)/week.
For more info on this, see:
Butte, N. et al. Infant feeding mode affects early growth and body
composition. Pediatrics 2000; 106(6):1322-66.
Haschke, F. et al. Euro-growth reference for breast-fed boys and girls:
influence of breast-feeding and solids on growth until 36 months of age J
Ped Gastro Nutr 2000; 31(Suppl 1):560-71.
Hope this helps,
Nancy Mohrbacher, IBCLC
Lactation Education Specialist, Hollister, Inc.
Is there an easy way to calculate adequate intake for a 6 month old? I
usually take the baby's weight and multiply it by 2.5 then divide by
number
of feedings, but this baby is older and I am not sure how to calculate
that.
I do have a chart but I wanted a quick way to calculate it without looking
at a chart
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