Food
| Food name | Side stream | Component group | Component | Value | Unit | Description | Reference |
|---|---|---|---|---|---|---|---|
| Soy | Soybean meal | Proximates | Tryptophan | 1.4 | % protein | High protein (non-dehulled) | Feedipedia |
| Poppy | Poppy oil meal | Proximates | Tryptophan | 1.1 | % protein | Mechanical extraction, Papaver somniferum | Feedipedia |
| Soy | Soybeans | Proximates | Tryptophan | 1.3 | % protein | Extruded | Feedipedia |
| Sugar beet | Sugar beet pulp | Proximates | Tryptophan | 1 | % protein | Feedipedia | |
| Onion | Onion hulls | Proximates | Tryptophan | 0.41 | mg/g dry matter | NOSHAN | |
| Fish, unspecified | Fish protein concentrate | Proximates | Tryptophan | 1.1 | % protein | Feedipedia | |
| Citrus, unspecified | Citrus pulp, dried | Proximates | Tryptophan | 0.52 | g/kg DM | Citrus by-products as ruminant feeds: A review | |
| Sugar beet | Sugar beet pulp, dried | Proximates | Tryptophan | 1 | % protein | Dehydrated | Feedipedia |
| Rape | Rapeseed press cake | Proximates | Tryptophan | 0.42 | mg/g dry matter | NOSHAN | |
| Animal by-products, unspecified | Liver meal | Proximates | Tryptophan | 1.1 | % protein | Pork | Feedipedia |