Best Tryptophan-Rich Foods for Chickens

Ranked by tryptophan content among foods safe for chickens in the Creature Feast catalog.

Sunflower Seeds per 100g: 348mg tryptophan Sunflower seeds contain tryptophan, the precursor to serotonin that influences mood, stress response, and pecking behavior in chickens. Adequate tryptophan in the diet has been associated with reduced feather pecking and aggression in confined flocks.

Lentils per 100g cooked: 81mg tryptophan Lentils provide meaningful tryptophan alongside their broader amino acid profile. In chickens, tryptophan converts to serotonin, which regulates sleep-wake cycles and stress responses, and to melatonin, which influences the seasonal laying patterns of hens.

Oats per 100g dry: 182mg tryptophan Oats deliver moderate tryptophan that contributes to the serotonin-mediated calm behavior desirable in backyard flocks. A warm oat mash in the evening may support the transition to roosting by providing the tryptophan precursor for melatonin production.