Table 1.

Classification of compounds that can be used in poultry production.

Compounds	Definition	Origin
Nutraceutical	A food (or its part) that provides medical or health benefits, including the prevention and/or treatment of a disease [17]	Plant or animal
Phytonutrient	Plant derived compound [18]	Plant
Phytochemical	A variety of plant-derived compounds with therapeutic activities such as anticarcinogenic, antimutagenic, anti-inflammatory, and antioxidant [19]	Plant
Bioactive Compound	Components in foods or dietary supplements, other than those necessary to the basic nutritional needs, which are responsible for changes in health status [20]	Plant or animal