Non-Protein Calorie: Nitrogen Ratio (NPC/N) as an Indicator of Nitrogen Balance in Clinical Settings

Biological and organoleptic properties of milk protein as affected by dilution with non-esential nitrogen sources

Bovine hair as an indicator of calorie-protein status.

Hair samples from beef cattle were examined to determine their response to feeding varying levels of protein and energy. Blood urea nitrogen (BUN) and nitrogen balance tests were also performed to provide a reference for comparison. Twenty-four weanling calves each weighing approximately 200 kg were equally divided into four groups and were fed the following percentages of the N.R.C. recommenda...

Evaluation of acid detergent insoluble nitrogen as an indicator of protein quality in nonforage proteins.

Two trials were conducted to determine the adequacy of ADIN as an indicator of N digestibility. In Trial 1, eight nonforage plant protein sources were heated at 150 degrees C for 90 min in the presence of xylose (12.8% of CP, DM basis) to produce heat damage. Thirty-four wethers (average BW 40 kg +/- 9.9) were used to determine the effect of heat on N digestibility. Differences in ADIN were evi...

Protein metabolism in human neonates: nitrogen-balance studies, estimated obligatory losses of nitrogen and whole-body turnover of nitrogen.

1. Aspects of nitrogen metabolism in the human neonate were assessed in one full-term infant and six premature infants by means of nitrogen-balance measurements, estimates of obligatory nitrogen losses and determinations of whole-body nitrogen turnover. 2. Our data indicate that the mean protein requirement for maintenance is 1-1 g of protein day-1 kg-1 and that 3-8 g of protein day-1 kg-1 shou...

Protein requirements in tropical countries: nitrogen losses in sweat and their relation to nitrogen balance.

I. An experiment was undertaken to determine whether high rates of sweating in a tropical climate affect protein requirements by increasing the total nitrogen losses from the body. 2. Six fully acclimatized volunteers were given a diet supplying 5 0 g protein (= 8 g N) daily. They performed strenuous physical work of a normal nature for an average of 64 h a day for two 5-day periods. During con...