Table 3.

Model parameters as derived from N balance experiments with fast growing naked neck chicken depending on age period, genotype and sex [11].

	Starter Period (d10-20)				Grower Period (d25-35)
	Na/Na		Na/na		Na/Na		Na/na
	Males	Females	Males	Females	Males	Females	Males	Females
NMR	262	348	224	392	341	384	346	395
NRmaxT	3763	3857	3965	4049	3397	2881	3512	3034
NDmaxT	3501	3509	3741	3657	3056	2497	3166	2639
b	288	267	274	248	291	356	282	329
bc−1	200	185	190	172	202	247	196	228

NMR = daily N maintenance requirement (mg/BW_kg^0.67); NR_maxT = theoretical maximum of daily N retention (mg/BW_kg^0.67); ND_maxT = theoretical maximum of daily N deposition (mg/BW_kg^0.67); b = model parameter assessing the dietary protein quality (b∙10⁶); bc⁻¹ = model parameter assessing the dietary efficiency of Met as LAA (bc⁻¹∙10⁶).