Abincin kaji dole ne ya samar da daidaitaccen bayanin martaba na mahimman amino acid don tallafawa saurin girma da haɓaka. Lysine, methionine, da threonine suna cikin mafi mahimmanci, yayin da suke yin tasiri kai tsaye akan haɗin furotin na tsoka da ƙimar juzu'i. Methionine, musamman, shine ƙayyadaddun amino acid a cikin abincin kaji, ma'ana ƙarancinsa na iya hana ci gaba ko da wasu sinadarai suna da yawa. Ta hanyar ƙarawa da amino acid ɗin roba, masu samarwa za su iya tsara abincin da zai dace daidai da bukatun tsuntsaye ba tare da dogara ga tushen furotin masu tsada kamar abincin waken soya ko naman kifi ba. Wannan ba kawai yana rage farashin abinci ba har ma yana rage fitar da sinadarin nitrogen, yana ba da gudummawa ga ayyukan noma masu dorewa.