Protein-Energy Requirements of Developing Countries: Evaluation of New Data (UNU, 1981, 268 pages): Obligatory and integumental nitrogen losses - children: Integumental nitrogen losses of pre-school children with different levels and sources of dietary protein intake: Conclusions

Protein-Energy Requirements of Developing Countries: Evaluation of New Data (UNU, 1981, 268 pages)

Obligatory and integumental nitrogen losses - children

Integumental nitrogen losses of pre-school children with different levels and sources of dietary protein intake

		(introductory text...)
		Objectives
		Experimental details
		Summary of main results
		Conclusions

Conclusions

1. The nitrogen losses by different routes have been determined in four pre-school children ingesting different nitrogen levels, at constant energy intake. Faecal, urinary, and integumental nitrogen changed proportionally to nitrogen intake. Obligatory faecal and urinary nitrogen agreed with accepted values. Integumental obligatory nitrogen is 4.7 ± 0.6 mg N/kg/day and increases up to 2.5 times at an egg protein intake of 2 g/kg/day.

2. Protein source influences integumental losses as well as faecal nitrogen losses.

Acknowledgements

We are grateful to the staff of the Clinical Centre at INCAP, to Mr. R.D. Mendoza, and to Mrs. J. de Melgar. This study was partially supported by a grant from the World Health Organization.