nitrogen balance

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nitrogen balance

[′nī·trə·jən ‚bal·əns]
(geochemistry)
The net loss or gain of nitrogen in a soil.
(physiology)
The difference between nitrogen intake (as protein) and total nitrogen excretion for an individual.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
How can a player achieve a positive nitrogen balance? To establish it a particular time, or for a specific event, then it is virtually impossible to achieve it through the diet.
Kam and Degen (1988) estimated that adult fat sand rats (Psammomys obesus) required 242.3 mg [kg.sup.-0.75] [day.sup.-1] of nitrogen to maintain positive nitrogen balance. The maintenance nitrogen requirement of adult antelope ground squirrels (Ammospermophilus leucurus) varied seasonally from 481 mg [kg.sup.-0.75] day 1 in the autumn to 505 mg [k.sup.-0.75] [day.sup.-1] during spring (Karasov, 1982).
Thus, the positive nitrogen balance noted in all the treatments indicates that there was no loss of protein or nitrogenous compounds during the experimental period, thereby confirming that the protein fraction in the diets was efficiently absorbed by the animals.
From Week 2 to Week 3, shifts to more positive nitrogen balances occurred due to decreases in urinary nitrogen excretion.