Table: Protein and Amino Acid Requirements of Turkeys a

Protein and Amino Acid Requirements of Turkeys ^a

	---------------Age (wk)----------------
Male:	0–4	4–8	8–12	12–16	16–20	20–24
Female:	0–4	4–8	8–11	11–14	14–17	17–20	Holding	Breeding Hens
Energy base kcal ME/kg diet^b	2,800	2,900	3,000	3,100	3,200	3,300	2,900	2,900
Protein	28.0	26	22	19	16.5	14	12	14
Arginine	1.6	1.4	1.1	0.9	0.75	0.6	0.5	0.6
Glycine + serine	1.0	0.9	0.8	0.7	0.6	0.5	0.4	0.5
Histidine	0.58	0.5	0.4	0.3	0.25	0.2	0.2	0.3
Isoleucine	1.1	1.0	0.8	0.6	0.5	0.45	0.4	0.5
Leucine	1.9	1.75	1.5	1.25	1.0	0.8	0.5	0.5
Lysine	1.6	1.5	1.3	1.0	0.8	0.65	0.5	0.6
Methionine	0.55	0.45	0.4	0.35	0.25	0.25	0.2	0.2
Methionine + cystine	1.05	0.95	0.8	0.65	0.55	0.45	0.4	0.4
Phenylalanine	1.0	0.9	0.8	0.7	0.6	0.5	0.4	0.55
Phenylalanine + tyrosine	1.8	1.6	1.2	1.0	0.9	0.9	0.8	1.0
Threonine	1.0	0.95	0.8	0.75	0.6	0.5	0.4	0.45
Tryptophan	0.26	0.24	0.2	0.18	0.15	0.13	0.1	0.13
Valine	1.2	1.1	0.9	0.8	0.7	0.6	0.5	0.58
^a Requirements are listed as percentages of diet.
^b These are typical ME concentrations for corn-soya diets. Different ME values may be appropriate if other ingredients predominate.
Adapted, with permission, from Nutrient Requirements of Poultry, 1994, National Academy of Sciences, National Academy Press, Washington, DC.

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