Farnesol (FAN), one of plant essential oils, is widely found in a variety of natural plants. Studies demonstrated that FAN contributed to the antioxidant and immune function as well as improving the intestinal flora, however effects of it on the broiler chickens has not been fully characterized. In the present study, we present an undated report of its effects on growth performance, antioxidant and immune functions of broiler chickens challenged with lipopolysaccharide (LPS). One hundred healthy male AA