# L-Tryptophan

> L-Tryptophan typical nutrient profile (as fed, 99% DM): 85.5% crude protein, 4.2 Mcal/kg ME poultry. Energy for poultry, swine and ruminants, amino acids, minerals and fiber, with substitutes.

- Page: https://feedsoft.ai/ingredients/l-tryptophan
- Family: Amino acids & additives
- Basis: as fed (typical values, not lab results). Source: Feedsoft Formulation reference library (NRC, Rostagno, INRA-CIRAD-AFZ, Feedipedia typical values)
- Market price: not tracked

## Composition

| Nutrient | Value | Unit |
| --- | --- | --- |
| Dry matter | 99 | % |

## Energy

| Nutrient | Value | Unit |
| --- | --- | --- |
| ME poultry | 4.2 | Mcal/kg |
| ME swine | 4.2 | Mcal/kg |

## Protein

| Nutrient | Value | Unit |
| --- | --- | --- |
| Crude protein | 85.5 | % |
| Tryptophan | 98 | % |
| SID tryptophan | 98 | % |

## Closest substitutes (by composition)

- [L-Valine](https://feedsoft.ai/ingredients/l-valine.md): 95% similar
- [Potato protein concentrate](https://feedsoft.ai/ingredients/potato-protein-concentrate.md): 83% similar
- [Pea protein concentrate 55%](https://feedsoft.ai/ingredients/pea-protein-concentrate-55.md): 76% similar
- [Poultry liver digest (palatant)](https://feedsoft.ai/ingredients/poultry-liver-digest-palatant.md): 74% similar
- [Brewers rice](https://feedsoft.ai/ingredients/brewers-rice.md): 69% similar