The present invention relates to the use of 25-hydroxyvitamin D 3 ("25-OH D 3") and antioxidant ("25-OH D 3") for preparing premixes or feeds capable of ameliorating various problems observed in poultry undergoing overfeeding / Anti-inflammatory agents (ascorbic acid, vitamin E, and canthaxanthin). Also provided is a feed comprising 25-OH D 3 and an antioxidant / anti-inflammatory agent and a premix.Selection drawing None