Chicken meat

Chicken meat is a rich source of complete protein for our pets. In particular, the amino acid tryptophan. Tryptophan is an essential amino acid that dogs and cats must obtain through diet and poultry is an excellent source of this important nutrient. Tryptophan is a precursor for niacin synthesis, serotonin, and melatonin making this amino acid important for mood, sleep, and energy production. These combine to make tryptophan one of the most important amino acids for mood and behaviour for our pets.
Threonine, an essential amino acid essential for energy production is also found in poultry meat.  
Chicken differs to other protein sources as a lower fat meat which is higher in vitamin K, B3, and B5 when compared to red meats like beef and lamb.
In addition to these important micronutrients chicken is also a good source of phosphorus, selenium. To a lesser extent, chicken is also a source of vitamin B1, B2, B6, and B12, as well as zinc, potassium, and copper.