Studies on protein nutrition of Papua New Guinea highlanders: Nitrogen balance and hematological studies.

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Abstract
Studies were made in August 1978 on the N-balance and hematological characteristics of 18 men living in the village of Kalugaluvi (altitude, 1500 m) near Lufa which is 60 km from Goroka, in the Eastern Highland Province of Papua New Guinea. The average daily protein intake on 3 consecutive days was 95.2 .+-. 29.3 mg N/kg (35.2 .+-. 10.7 g protein/day), and 32.6 .+-. 18.7% of the total protein intake was in the form of animal proteins. The calculated nutritional value of the dietary protein, scored according to the 1973 FAO/WHO pattern, was 83.7 .+-. 10.6. Urinary and fecal N excretions during the same period were 81.9 .+-. 18.7 and 26.3 .+-. 11.8 mg N/kg, respectively, giving a N balance of -13.5 .+-. 24.9 mg N/kg. From N-balance data on individuals, the N-intake for maintenance of a zero N-balance was estimated as 116.3 .+-. 48.6 mg N/kg (mean 95% confidence interval). Hematological data showed normal or somewhat high values for Hb (16.90 .+-. 1.05 g/100 ml) and serum proteins (8.05 .+-. 0.40 g/100 ml). The increased level of serum proteins was associated with an increased globulin level.

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