Optimizing feed in the poultry industry has always been one of the fundamental strategies for increasing flock profitability. Utilizing higher-quality feed ingredients, incorporating synthetic amino acids into the diet, and precisely formulating rations are among the commonly used methods. In this context, the use of enzymes to digest nutrients that are indigestible for birds presents an effective solution for reducing feed costs. Enzymes not only enhance feed efficiency but also eliminate many anti-nutritional factors in the feed, preventing potential damage. Phytase, xylanase, beta-glucanase, alpha-galactosidase, and protease are some of the enzymes used in poultry feed.