A key nutrient for growth and feed intake

"L-Tryptophan 98% Feed Grade" is used to supplement feeds in order to meet the digestible tryptophan requirement of animals. It is particularly suitable for young pigs, because it helps to improve feed intake, growth rate and feed efficiency.

Ajinomoto Animal Nutrition Europe has been manufacturing feed grade L-Tryptophan since 2000. To meet the fast growing demand, the company has been regularly increasing production capacities.

This product is intended only for animals and should not be used in human products or human consumption.

The main characteristics of the product are described below:


Physical description Whitish to yellowish powder
Chemical description
Molecular formula C11H12N2O2
Molecular weight 204.23
Isomer L (Laevo-rotatory)
Regulatory position
L-Tryptophan, which is technically pure (L-Tryptophan 98% Feed Grade) comes under Regulation (CE) 1831/2003 of 22/09/2003 relating to additives which are intended for animal feed (Official Journal of the EU n° L 268 of 18/10/2003), category: “nutritional additives”, additive group: “amino acids, their salts and analogous products” and can be used for all animal species
Nutritional data
Dry matter 99.0%
L-Tryptophan 98%
Digestibility 100%
Crude protein 84.0%
ME poultry 5850 (24.48) kcal/kg (MJ/kg)
DE pigs 6510 (27.24) kcal/kg (MJ/kg)
ME pigs 6120 (25.61) kcal/kg (MJ/kg)
NE pigs 4730 (19.79) kcal/kg (MJ/kg)
Range of supplementation usually observed 0.1 to 1.0 kg/ton of compound feed
General specifications
pH 4.5 to 7.0
Density 0.2 to 0.3
Packaging Bags of 10 kg on wrapped palettes and "Big bags"
Stability - Closed bags of 10 kg from the place of origin: the product is stable for at least 3 years if it is stored in the recommended conditions
- Closed "Big bags" from the place of origin: the product is stable for at least 1 year if stored under recommended conditions