Define Factorial method to Calculate Nitrogen Requirements?
The nitrogen requirements have been calculated by a factorial method suggested by different expert groups, described as follows:
R=U+F+S+G
Where R = N requirements,
U = loss of endogenous N in urine,
F = loss of endogenous N in faeces,
S = loss of N through skin, i.e., sweat and integumental losses, and
G = N required for growth.