The impossibility of using drugs for the health of farm animals leads to the search for alternative strategies with two purposes: to maintain animal health and safeguard human health. In this perspective. tannins have shown great promises. These phytocomplexes obtained from natural matrices with multiple health properties may be used as a feed supplement in chicken farms. https://www.roneverhart.com/DigiWeigh-Notebook-Digital-Pocket-Scale-1000g-x-0-1g/