Protein and Amino Acid Requirements of Turkeys a
---------------Age (week)---------------- | ||||||||
|---|---|---|---|---|---|---|---|---|
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 dietb | 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. | ||||||||