This product contains prebiotics to help support a proper balance in the gut microbiome to assist calves in breaking down nutrients for energy and addressing health challenges. This product is also enhanced with optimizing technologies, including a unique combination of essential oils and flavors, that support weight gain. The protein blendformula is composed of a variety of proteins that complement each other and offers a lower potential investment cost without sacrificing calf performance. | Land O Lakes Herd Maker Protein Blend Calf Milk Replacer | Size 25 lbs