Indyo y’inkoko igomba gutanga imiterere yuzuye ya acide ya amine yingenzi kugirango ishyigikire vuba niterambere. Lysine, methionine, na threonine biri mubikomeye cyane, kuko bigira uruhare runini mu guhuza imitsi ya poroteyine no kugaburira ibiryo. Methionine, byumwihariko, ni aside igabanya aside amine mu biryo by’inkoko, bivuze ko ibura ryayo rishobora kubangamira imikurire nubwo izindi ntungamubiri ari nyinshi. Mu kongeramo aside amine acide, abayikora barashobora gutegura indyo yuzuye neza kubyo inyoni zikenera mu mirire badashingiye cyane ku masoko ya poroteyine ahenze nko kurya soya cyangwa ifi y’amafi. Ibi ntibigabanya ikiguzi cyibiryo gusa ahubwo binagabanya gusohora azote, bigira uruhare mubikorwa byubuhinzi birambye.