Water recycling in lactation

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Science  21 Feb 1975:
Vol. 187, Issue 4177, pp. 657-658
DOI: 10.1126/science.1167701


During lactation, female rodents, dingoes, and kangaroos consume urine and feces excreted by the young. Studies with tritiated water as a tracer for native water showed that roughly one-third of the water secreted as milk was returned to the mother. The results are cogent to studies of water balance of lactation and to current methods used for estimating milk production.