Tryptophan is an animalEssential amino acidsOne of them, its core function isAs a precursor of serotonin (5-hydroxytryptamine) and melatonin, it directly regulates nerve conduction, mood, sleep, eating behavior and immune response.

The main functions include:

1. Regulate nerves and behaviorSynthesize the "happiness hormone" serotonin, which affects mood, appetite and stress response; It is further converted into melatonin to regulate the sleep-wake rhythm.

2. Maintain protein synthesisIt is involved in the construction of body proteins and is particularly crucial during the rapid growth period of young animals.

3. Affect feed intakeThe level of serotonin in the brain is closely related to food intake, and a deficiency may lead to a decrease in food intake.

4. Enhance immune functionIt is a necessary nutrient for the proliferation of antibodies and immune cells.